contrib/jwrapper: update generated headers

[nit.git] / c_src / parser_prod.sep.3.c

diff --git a/c_src/parser_prod.sep.3.c b/c_src/parser_prod.sep.3.c
index 1baa55d..cb90f0a 100644 (file)
--- a/c_src/parser_prod.sep.3.c
+++ b/c_src/parser_prod.sep.3.c
@@ -1,2017 +1,709 @@
 #include "parser_prod.sep.0.h"
-/* method parser_prod#AIfexprExpr#empty_init for (self: AIfexprExpr) */
-void parser_prod__AIfexprExpr__empty_init(val* self) {
-RET_LABEL:;
+/* method parser_prod#AForExpr#init_aforexpr for (self: AForExpr, nullable TKwfor, Collection[Object], nullable AExpr, nullable TKwdo, nullable AExpr, nullable ALabel) */
+void parser_prod__AForExpr__init_aforexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4, val* p5) {
+val* var_n_kwfor /* var n_kwfor: nullable TKwfor */;
+val* var_n_ids /* var n_ids: Collection[Object] */;
+val* var_n_expr /* var n_expr: nullable AExpr */;
+val* var_n_kwdo /* var n_kwdo: nullable TKwdo */;
+val* var_n_block /* var n_block: nullable AExpr */;
+val* var_n_label /* var n_label: nullable ALabel */;
+val* var /* : ANodes[TId] */;
+val* var3 /* : ANodes[TId] */;
+val* var6 /* : null */;
+short int var7 /* : Bool */;
+short int var8 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var10 /* : Bool */;
+short int var11 /* : Bool */;
+short int var12 /* : Bool */;
+val* var14 /* : null */;
+short int var15 /* : Bool */;
+short int var16 /* : Bool */;
+short int var18 /* : Bool */;
+short int var19 /* : Bool */;
+short int var20 /* : Bool */;
+var_n_kwfor = p0;
+var_n_ids = p1;
+var_n_expr = p2;
+var_n_kwdo = p3;
+var_n_block = p4;
+var_n_label = p5;
+if (unlikely(var_n_kwfor == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2766);
+show_backtrace(1);
 }
-/* method parser_prod#AIfexprExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AIfexprExpr__empty_init(val* self) {
-parser_prod__AIfexprExpr__empty_init(self);
-RET_LABEL:;
+self->attrs[COLOR_parser_nodes__AForExpr___n_kwfor].val = var_n_kwfor; /* _n_kwfor on <self:AForExpr> */
+if (var_n_kwfor == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2767);
+show_backtrace(1);
+} else {
+{ /* Inline parser_nodes#ANode#parent= (var_n_kwfor,self) on <var_n_kwfor:nullable TKwfor> */
+if (unlikely(var_n_kwfor == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-/* method parser_prod#AIfexprExpr#init_aifexprexpr for (self: AIfexprExpr, nullable TKwif, nullable AExpr, nullable TKwthen, nullable AExpr, nullable TKwelse, nullable AExpr) */
-void parser_prod__AIfexprExpr__init_aifexprexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4, val* p5) {
-val* var_n_kwif /* var n_kwif: nullable TKwif */;
-val* var_n_expr /* var n_expr: nullable AExpr */;
-val* var_n_kwthen /* var n_kwthen: nullable TKwthen */;
-val* var_n_then /* var n_then: nullable AExpr */;
-val* var_n_kwelse /* var n_kwelse: nullable TKwelse */;
-val* var_n_else /* var n_else: nullable AExpr */;
-var_n_kwif = p0;
-var_n_expr = p1;
-var_n_kwthen = p2;
-var_n_then = p3;
-var_n_kwelse = p4;
-var_n_else = p5;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AIfexprExpr__empty_init]))(self) /* empty_init on <self:AIfexprExpr>*/;
-if (var_n_kwif == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5108);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwif].val = var_n_kwif; /* _n_kwif on <self:AIfexprExpr> */
-if (var_n_kwif == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5109);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_kwif->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwif, self) /* parent= on <var_n_kwif:nullable TKwif>*/;
+var_n_kwfor->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_kwfor:nullable TKwfor> */
+RET_LABEL1:(void)0;
+}
+}
+{
+{ /* Inline parser_nodes#AForExpr#n_ids (self) on <self:AForExpr> */
+var3 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
+if (unlikely(var3 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_ids");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 1426);
+show_backtrace(1);
+}
+var = var3;
+RET_LABEL2:(void)0;
 }
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5110);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AIfexprExpr> */
+{
+parser_nodes__ANodes__unsafe_add_all(var, var_n_ids); /* Direct call parser_nodes#ANodes#unsafe_add_all on <var:ANodes[TId]>*/
+}
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2769);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AForExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5111);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2770);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL4:(void)0;
 }
-if (var_n_kwthen == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5112);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwthen].val = var_n_kwthen; /* _n_kwthen on <self:AIfexprExpr> */
-if (var_n_kwthen == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5113);
-exit(1);
+if (unlikely(var_n_kwdo == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2771);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val = var_n_kwdo; /* _n_kwdo on <self:AForExpr> */
+if (var_n_kwdo == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2772);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_kwthen->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwthen, self) /* parent= on <var_n_kwthen:nullable TKwthen>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_kwdo,self) on <var_n_kwdo:nullable TKwdo> */
+if (unlikely(var_n_kwdo == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_kwdo->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_kwdo:nullable TKwdo> */
+RET_LABEL5:(void)0;
 }
-if (var_n_then == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5114);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_then].val = var_n_then; /* _n_then on <self:AIfexprExpr> */
-if (var_n_then == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5115);
-exit(1);
+self->attrs[COLOR_parser_nodes__AForExpr___n_block].val = var_n_block; /* _n_block on <self:AForExpr> */
+var6 = NULL;
+if (var_n_block == NULL) {
+var7 = 0; /* is null */
 } else {
-((void (*)(val*, val*))(var_n_then->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_then, self) /* parent= on <var_n_then:nullable AExpr>*/;
+var7 = 1; /* arg is null and recv is not */
+}
+if (0) {
+{ /* Inline kernel#Object#!= (var_n_block,var6) on <var_n_block:nullable AExpr> */
+var_other = var6;
+{
+var11 = ((short int (*)(val*, val*))(var_n_block->class->vft[COLOR_kernel__Object___61d_61d]))(var_n_block, var_other) /* == on <var_n_block:nullable AExpr(AExpr)>*/;
+var10 = var11;
+}
+var12 = !var10;
+var8 = var12;
+goto RET_LABEL9;
+RET_LABEL9:(void)0;
+}
+var7 = var8;
+}
+if (var7){
+{
+{ /* Inline parser_nodes#ANode#parent= (var_n_block,self) on <var_n_block:nullable AExpr(AExpr)> */
+var_n_block->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_block:nullable AExpr(AExpr)> */
+RET_LABEL13:(void)0;
 }
-if (var_n_kwelse == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5116);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwelse].val = var_n_kwelse; /* _n_kwelse on <self:AIfexprExpr> */
-if (var_n_kwelse == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5117);
-exit(1);
 } else {
-((void (*)(val*, val*))(var_n_kwelse->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwelse, self) /* parent= on <var_n_kwelse:nullable TKwelse>*/;
 }
-if (var_n_else == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5118);
-exit(1);
+self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_n_label; /* _n_label on <self:AForExpr> */
+var14 = NULL;
+if (var_n_label == NULL) {
+var15 = 0; /* is null */
+} else {
+var15 = 1; /* arg is null and recv is not */
+}
+if (0) {
+{ /* Inline kernel#Object#!= (var_n_label,var14) on <var_n_label:nullable ALabel> */
+var_other = var14;
+{
+var19 = ((short int (*)(val*, val*))(var_n_label->class->vft[COLOR_kernel__Object___61d_61d]))(var_n_label, var_other) /* == on <var_n_label:nullable ALabel(ALabel)>*/;
+var18 = var19;
+}
+var20 = !var18;
+var16 = var20;
+goto RET_LABEL17;
+RET_LABEL17:(void)0;
+}
+var15 = var16;
+}
+if (var15){
+{
+{ /* Inline parser_nodes#ANode#parent= (var_n_label,self) on <var_n_label:nullable ALabel(ALabel)> */
+var_n_label->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_label:nullable ALabel(ALabel)> */
+RET_LABEL21:(void)0;
+}
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_else].val = var_n_else; /* _n_else on <self:AIfexprExpr> */
-if (var_n_else == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5119);
-exit(1);
 } else {
-((void (*)(val*, val*))(var_n_else->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_else, self) /* parent= on <var_n_else:nullable AExpr>*/;
 }
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#init_aifexprexpr for (self: Object, nullable TKwif, nullable AExpr, nullable TKwthen, nullable AExpr, nullable TKwelse, nullable AExpr) */
-void VIRTUAL_parser_prod__AIfexprExpr__init_aifexprexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4, val* p5) {
-parser_prod__AIfexprExpr__init_aifexprexpr(self, p0, p1, p2, p3, p4, p5);
+/* method parser_prod#AForExpr#init_aforexpr for (self: Object, nullable TKwfor, Collection[Object], nullable AExpr, nullable TKwdo, nullable AExpr, nullable ALabel) */
+void VIRTUAL_parser_prod__AForExpr__init_aforexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4, val* p5) {
+parser_prod__AForExpr__init_aforexpr(self, p0, p1, p2, p3, p4, p5); /* Direct call parser_prod#AForExpr#init_aforexpr on <self:Object(AForExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#replace_child for (self: AIfexprExpr, ANode, nullable ANode) */
-void parser_prod__AIfexprExpr__replace_child(val* self, val* p0, val* p1) {
+/* method parser_prod#AForExpr#replace_child for (self: AForExpr, ANode, nullable ANode) */
+void parser_prod__AForExpr__replace_child(val* self, val* p0, val* p1) {
 val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
-val* var /* : TKwif */;
+val* var /* : TKwfor */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : TKwthen */;
+const char* var_class_name;
+val* var8 /* : ANodes[TId] */;
+val* var10 /* : ANodes[TId] */;
+short int var11 /* : Bool */;
+val* var12 /* : AExpr */;
 short int var13 /* : Bool */;
-val* var14 /* : null */;
-short int var15 /* : Bool */;
+short int var14 /* : Bool */;
 short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : AExpr */;
-short int var20 /* : Bool */;
-val* var21 /* : null */;
-short int var22 /* : Bool */;
-short int var23 /* : Bool */;
-int cltype24;
-int idtype25;
-val* var26 /* : TKwelse */;
+short int var18 /* : Bool */;
+short int var19 /* : Bool */;
+int cltype20;
+int idtype21;
+const char* var_class_name22;
+val* var23 /* : TKwdo */;
+short int var24 /* : Bool */;
+short int var25 /* : Bool */;
 short int var27 /* : Bool */;
-val* var28 /* : null */;
 short int var29 /* : Bool */;
 short int var30 /* : Bool */;
 int cltype31;
 int idtype32;
-val* var33 /* : AExpr */;
-short int var34 /* : Bool */;
-val* var35 /* : null */;
+const char* var_class_name33;
+val* var34 /* : nullable AExpr */;
+short int var35 /* : Bool */;
 short int var36 /* : Bool */;
-short int var37 /* : Bool */;
-int cltype38;
-int idtype39;
+short int var38 /* : Bool */;
+short int var40 /* : Bool */;
+short int var41 /* : Bool */;
+int cltype42;
+int idtype43;
+const char* var_class_name44;
+val* var45 /* : nullable ALabel */;
+short int var46 /* : Bool */;
+short int var47 /* : Bool */;
+short int var49 /* : Bool */;
+short int var51 /* : Bool */;
+short int var52 /* : Bool */;
+int cltype53;
+int idtype54;
+const char* var_class_name55;
 var_old_child = p0;
 var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwif].val; /* _n_kwif on <self:AIfexprExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwif");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5124);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__AForExpr___n_kwfor].val; /* _n_kwfor on <self:AForExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwfor");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2781);
+show_backtrace(1);
+}
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:TKwfor> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:TKwfor> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
+}
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TKwif>*/;
 if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
+/* <var_new_child:nullable ANode> isa TKwfor */
+cltype = type_parser_nodes__TKwfor.color;
+idtype = type_parser_nodes__TKwfor.id;
+if(var_new_child == NULL) {
+var7 = 0;
 } else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwif */
-cltype = type_parser_nodes__TKwif.color;
-idtype = type_parser_nodes__TKwif.id;
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5127);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwif].val = var_new_child; /* _n_kwif on <self:AIfexprExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5130);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TKwfor", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2782);
+show_backtrace(1);
+}
+{
+parser_prod__AForExpr__n_kwfor_61d(self, var_new_child); /* Direct call parser_prod#AForExpr#n_kwfor= on <self:AForExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_expr].val; /* _n_expr on <self:AIfexprExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5134);
-exit(1);
-}
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline parser_nodes#AForExpr#n_ids (self) on <self:AForExpr> */
+var10 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
+if (unlikely(var10 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_ids");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 1426);
+show_backtrace(1);
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
+var8 = var10;
+RET_LABEL9:(void)0;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5137);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_expr].val = var_new_child; /* _n_expr on <self:AIfexprExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5140);
-exit(1);
+{
+var11 = parser_nodes__ANodes__replace_child(var8, var_old_child, var_new_child);
 }
+if (var11){
 goto RET_LABEL;
 } else {
 }
-var12 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwthen].val; /* _n_kwthen on <self:AIfexprExpr> */
-if (var12 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwthen");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5144);
-exit(1);
+var12 = self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val; /* _n_expr on <self:AForExpr> */
+if (unlikely(var12 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2786);
+show_backtrace(1);
 }
-var13 = ((short int (*)(val*, val*))(var12->class->vft[COLOR_kernel__Object___61d_61d]))(var12, var_old_child) /* == on <var12:TKwthen>*/;
-if (var13){
-var14 = NULL;
-if (var_new_child == NULL) {
-var15 = 0; /* is null */
-} else {
-var15 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var12,var_old_child) on <var12:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var12,var_other) on <var12:AExpr> */
+var18 = var12 == var_other;
+var16 = var18;
+goto RET_LABEL17;
+RET_LABEL17:(void)0;
 }
-if (var15){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwthen */
-cltype17 = type_parser_nodes__TKwthen.color;
-idtype18 = type_parser_nodes__TKwthen.id;
-if(cltype17 >= var_new_child->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_new_child->type->type_table[cltype17] == idtype18;
 }
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5147);
-exit(1);
+var14 = var16;
+goto RET_LABEL15;
+RET_LABEL15:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwthen].val = var_new_child; /* _n_kwthen on <self:AIfexprExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5150);
-exit(1);
+var13 = var14;
 }
-goto RET_LABEL;
+if (var13){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype20 = type_parser_nodes__AExpr.color;
+idtype21 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var19 = 0;
 } else {
-}
-var19 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_then].val; /* _n_then on <self:AIfexprExpr> */
-if (var19 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_then");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5154);
-exit(1);
-}
-var20 = ((short int (*)(val*, val*))(var19->class->vft[COLOR_kernel__Object___61d_61d]))(var19, var_old_child) /* == on <var19:AExpr>*/;
-if (var20){
-var21 = NULL;
-if (var_new_child == NULL) {
-var22 = 0; /* is null */
+if(cltype20 >= var_new_child->type->table_size) {
+var19 = 0;
 } else {
-var22 = 1; /* arg is null and recv is not */
+var19 = var_new_child->type->type_table[cltype20] == idtype21;
 }
-if (var22){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype24 = type_parser_nodes__AExpr.color;
-idtype25 = type_parser_nodes__AExpr.id;
-if(cltype24 >= var_new_child->type->table_size) {
-var23 = 0;
-} else {
-var23 = var_new_child->type->type_table[cltype24] == idtype25;
 }
-if (!var23) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5157);
-exit(1);
+if (unlikely(!var19)) {
+var_class_name22 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name22);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2787);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_then].val = var_new_child; /* _n_then on <self:AIfexprExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5160);
-exit(1);
+{
+parser_prod__AForExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AForExpr#n_expr= on <self:AForExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var26 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwelse].val; /* _n_kwelse on <self:AIfexprExpr> */
-if (var26 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwelse");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5164);
-exit(1);
+var23 = self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val; /* _n_kwdo on <self:AForExpr> */
+if (unlikely(var23 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwdo");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2790);
+show_backtrace(1);
 }
-var27 = ((short int (*)(val*, val*))(var26->class->vft[COLOR_kernel__Object___61d_61d]))(var26, var_old_child) /* == on <var26:TKwelse>*/;
-if (var27){
-var28 = NULL;
-if (var_new_child == NULL) {
-var29 = 0; /* is null */
-} else {
-var29 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var23,var_old_child) on <var23:TKwdo> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var23,var_other) on <var23:TKwdo> */
+var29 = var23 == var_other;
+var27 = var29;
+goto RET_LABEL28;
+RET_LABEL28:(void)0;
 }
-if (var29){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwelse */
-cltype31 = type_parser_nodes__TKwelse.color;
-idtype32 = type_parser_nodes__TKwelse.id;
+}
+var25 = var27;
+goto RET_LABEL26;
+RET_LABEL26:(void)0;
+}
+var24 = var25;
+}
+if (var24){
+/* <var_new_child:nullable ANode> isa TKwdo */
+cltype31 = type_parser_nodes__TKwdo.color;
+idtype32 = type_parser_nodes__TKwdo.id;
+if(var_new_child == NULL) {
+var30 = 0;
+} else {
 if(cltype31 >= var_new_child->type->table_size) {
 var30 = 0;
 } else {
 var30 = var_new_child->type->type_table[cltype31] == idtype32;
 }
-if (!var30) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5167);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwelse].val = var_new_child; /* _n_kwelse on <self:AIfexprExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5170);
-exit(1);
+if (unlikely(!var30)) {
+var_class_name33 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TKwdo", var_class_name33);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2791);
+show_backtrace(1);
+}
+{
+parser_prod__AForExpr__n_kwdo_61d(self, var_new_child); /* Direct call parser_prod#AForExpr#n_kwdo= on <self:AForExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var33 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_else].val; /* _n_else on <self:AIfexprExpr> */
-if (var33 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_else");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5174);
-exit(1);
+var34 = self->attrs[COLOR_parser_nodes__AForExpr___n_block].val; /* _n_block on <self:AForExpr> */
+if (var34 == NULL) {
+var35 = 0; /* <var_old_child:ANode> cannot be null */
+} else {
+{ /* Inline kernel#Object#== (var34,var_old_child) on <var34:nullable AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var34,var_other) on <var34:nullable AExpr(AExpr)> */
+var40 = var34 == var_other;
+var38 = var40;
+goto RET_LABEL39;
+RET_LABEL39:(void)0;
+}
+}
+var36 = var38;
+goto RET_LABEL37;
+RET_LABEL37:(void)0;
 }
-var34 = ((short int (*)(val*, val*))(var33->class->vft[COLOR_kernel__Object___61d_61d]))(var33, var_old_child) /* == on <var33:AExpr>*/;
-if (var34){
-var35 = NULL;
-if (var_new_child == NULL) {
-var36 = 0; /* is null */
+var35 = var36;
+}
+if (var35){
+/* <var_new_child:nullable ANode> isa nullable AExpr */
+cltype42 = type_nullable_parser_nodes__AExpr.color;
+idtype43 = type_nullable_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var41 = 1;
 } else {
-var36 = 1; /* arg is null and recv is not */
+if(cltype42 >= var_new_child->type->table_size) {
+var41 = 0;
+} else {
+var41 = var_new_child->type->type_table[cltype42] == idtype43;
 }
-if (var36){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype38 = type_parser_nodes__AExpr.color;
-idtype39 = type_parser_nodes__AExpr.id;
-if(cltype38 >= var_new_child->type->table_size) {
-var37 = 0;
+}
+if (unlikely(!var41)) {
+var_class_name44 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "nullable AExpr", var_class_name44);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2795);
+show_backtrace(1);
+}
+{
+parser_prod__AForExpr__n_block_61d(self, var_new_child); /* Direct call parser_prod#AForExpr#n_block= on <self:AForExpr>*/
+}
+goto RET_LABEL;
 } else {
-var37 = var_new_child->type->type_table[cltype38] == idtype39;
 }
-if (!var37) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5177);
-exit(1);
+var45 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:AForExpr> */
+if (var45 == NULL) {
+var46 = 0; /* <var_old_child:ANode> cannot be null */
+} else {
+{ /* Inline kernel#Object#== (var45,var_old_child) on <var45:nullable ALabel> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var45,var_other) on <var45:nullable ALabel(ALabel)> */
+var51 = var45 == var_other;
+var49 = var51;
+goto RET_LABEL50;
+RET_LABEL50:(void)0;
+}
 }
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_else].val = var_new_child; /* _n_else on <self:AIfexprExpr> */
+var47 = var49;
+goto RET_LABEL48;
+RET_LABEL48:(void)0;
+}
+var46 = var47;
+}
+if (var46){
+/* <var_new_child:nullable ANode> isa nullable ALabel */
+cltype53 = type_nullable_parser_nodes__ALabel.color;
+idtype54 = type_nullable_parser_nodes__ALabel.id;
+if(var_new_child == NULL) {
+var52 = 1;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5180);
-exit(1);
+if(cltype53 >= var_new_child->type->table_size) {
+var52 = 0;
+} else {
+var52 = var_new_child->type->type_table[cltype53] == idtype54;
+}
+}
+if (unlikely(!var52)) {
+var_class_name55 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "nullable ALabel", var_class_name55);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2799);
+show_backtrace(1);
+}
+{
+parser_prod__AForExpr__n_label_61d(self, var_new_child); /* Direct call parser_prod#AForExpr#n_label= on <self:AForExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__AIfexprExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AIfexprExpr__replace_child(self, p0, p1);
+/* method parser_prod#AForExpr#replace_child for (self: Object, ANode, nullable ANode) */
+void VIRTUAL_parser_prod__AForExpr__replace_child(val* self, val* p0, val* p1) {
+parser_prod__AForExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AForExpr#replace_child on <self:Object(AForExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_kwif= for (self: AIfexprExpr, TKwif) */
-void parser_prod__AIfexprExpr__n_kwif_61d(val* self, val* p0) {
-val* var_node /* var node: TKwif */;
+/* method parser_prod#AForExpr#n_kwfor= for (self: AForExpr, TKwfor) */
+void parser_prod__AForExpr__n_kwfor_61d(val* self, val* p0) {
+val* var_node /* var node: TKwfor */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwif].val = var_node; /* _n_kwif on <self:AIfexprExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwif>*/;
-RET_LABEL:;
+self->attrs[COLOR_parser_nodes__AForExpr___n_kwfor].val = var_node; /* _n_kwfor on <self:AForExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TKwfor> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TKwfor> */
+RET_LABEL1:(void)0;
 }
-/* method parser_prod#AIfexprExpr#n_kwif= for (self: Object, TKwif) */
-void VIRTUAL_parser_prod__AIfexprExpr__n_kwif_61d(val* self, val* p0) {
-parser_prod__AIfexprExpr__n_kwif_61d(self, p0);
-RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_expr= for (self: AIfexprExpr, AExpr) */
-void parser_prod__AIfexprExpr__n_expr_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_expr].val = var_node; /* _n_expr on <self:AIfexprExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AIfexprExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AIfexprExpr__n_expr_61d(self, p0);
+/* method parser_prod#AForExpr#n_kwfor= for (self: Object, TKwfor) */
+void VIRTUAL_parser_prod__AForExpr__n_kwfor_61d(val* self, val* p0) {
+parser_prod__AForExpr__n_kwfor_61d(self, p0); /* Direct call parser_prod#AForExpr#n_kwfor= on <self:Object(AForExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_kwthen= for (self: AIfexprExpr, TKwthen) */
-void parser_prod__AIfexprExpr__n_kwthen_61d(val* self, val* p0) {
-val* var_node /* var node: TKwthen */;
+/* method parser_prod#AForExpr#n_expr= for (self: AForExpr, AExpr) */
+void parser_prod__AForExpr__n_expr_61d(val* self, val* p0) {
+val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwthen].val = var_node; /* _n_kwthen on <self:AIfexprExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwthen>*/;
-RET_LABEL:;
+self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val = var_node; /* _n_expr on <self:AForExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
 }
-/* method parser_prod#AIfexprExpr#n_kwthen= for (self: Object, TKwthen) */
-void VIRTUAL_parser_prod__AIfexprExpr__n_kwthen_61d(val* self, val* p0) {
-parser_prod__AIfexprExpr__n_kwthen_61d(self, p0);
-RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_then= for (self: AIfexprExpr, AExpr) */
-void parser_prod__AIfexprExpr__n_then_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_then].val = var_node; /* _n_then on <self:AIfexprExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_then= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AIfexprExpr__n_then_61d(val* self, val* p0) {
-parser_prod__AIfexprExpr__n_then_61d(self, p0);
+/* method parser_prod#AForExpr#n_expr= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AForExpr__n_expr_61d(val* self, val* p0) {
+parser_prod__AForExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AForExpr#n_expr= on <self:Object(AForExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_kwelse= for (self: AIfexprExpr, TKwelse) */
-void parser_prod__AIfexprExpr__n_kwelse_61d(val* self, val* p0) {
-val* var_node /* var node: TKwelse */;
+/* method parser_prod#AForExpr#n_kwdo= for (self: AForExpr, TKwdo) */
+void parser_prod__AForExpr__n_kwdo_61d(val* self, val* p0) {
+val* var_node /* var node: TKwdo */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwelse].val = var_node; /* _n_kwelse on <self:AIfexprExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwelse>*/;
-RET_LABEL:;
+self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val = var_node; /* _n_kwdo on <self:AForExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TKwdo> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TKwdo> */
+RET_LABEL1:(void)0;
 }
-/* method parser_prod#AIfexprExpr#n_kwelse= for (self: Object, TKwelse) */
-void VIRTUAL_parser_prod__AIfexprExpr__n_kwelse_61d(val* self, val* p0) {
-parser_prod__AIfexprExpr__n_kwelse_61d(self, p0);
-RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_else= for (self: AIfexprExpr, AExpr) */
-void parser_prod__AIfexprExpr__n_else_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AIfexprExpr___n_else].val = var_node; /* _n_else on <self:AIfexprExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#n_else= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AIfexprExpr__n_else_61d(val* self, val* p0) {
-parser_prod__AIfexprExpr__n_else_61d(self, p0);
+/* method parser_prod#AForExpr#n_kwdo= for (self: Object, TKwdo) */
+void VIRTUAL_parser_prod__AForExpr__n_kwdo_61d(val* self, val* p0) {
+parser_prod__AForExpr__n_kwdo_61d(self, p0); /* Direct call parser_prod#AForExpr#n_kwdo= on <self:Object(AForExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AIfexprExpr#visit_all for (self: AIfexprExpr, Visitor) */
-void parser_prod__AIfexprExpr__visit_all(val* self, val* p0) {
-val* var_v /* var v: Visitor */;
-val* var /* : TKwif */;
-val* var1 /* : AExpr */;
-val* var2 /* : TKwthen */;
-val* var3 /* : AExpr */;
-val* var4 /* : TKwelse */;
-val* var5 /* : AExpr */;
-var_v = p0;
-var = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwif].val; /* _n_kwif on <self:AIfexprExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwif");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5220);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_expr].val; /* _n_expr on <self:AIfexprExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5221);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-var2 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwthen].val; /* _n_kwthen on <self:AIfexprExpr> */
-if (var2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwthen");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5222);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var2) /* enter_visit on <var_v:Visitor>*/;
-var3 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_then].val; /* _n_then on <self:AIfexprExpr> */
-if (var3 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_then");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5223);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var3) /* enter_visit on <var_v:Visitor>*/;
-var4 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_kwelse].val; /* _n_kwelse on <self:AIfexprExpr> */
-if (var4 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwelse");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5224);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var4) /* enter_visit on <var_v:Visitor>*/;
-var5 = self->attrs[COLOR_parser_nodes__AIfexprExpr___n_else].val; /* _n_else on <self:AIfexprExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_else");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5225);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var5) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AIfexprExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__AIfexprExpr__visit_all(val* self, val* p0) {
-parser_prod__AIfexprExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#empty_init for (self: AWhileExpr) */
-void parser_prod__AWhileExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AWhileExpr__empty_init(val* self) {
-parser_prod__AWhileExpr__empty_init(self);
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#init_awhileexpr for (self: AWhileExpr, nullable TKwwhile, nullable AExpr, nullable TKwdo, nullable AExpr, nullable ALabel) */
-void parser_prod__AWhileExpr__init_awhileexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
-val* var_n_kwwhile /* var n_kwwhile: nullable TKwwhile */;
-val* var_n_expr /* var n_expr: nullable AExpr */;
-val* var_n_kwdo /* var n_kwdo: nullable TKwdo */;
-val* var_n_block /* var n_block: nullable AExpr */;
-val* var_n_label /* var n_label: nullable ALabel */;
+/* method parser_prod#AForExpr#n_block= for (self: AForExpr, nullable AExpr) */
+void parser_prod__AForExpr__n_block_61d(val* self, val* p0) {
+val* var_node /* var node: nullable AExpr */;
 val* var /* : null */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-var_n_kwwhile = p0;
-var_n_expr = p1;
-var_n_kwdo = p2;
-var_n_block = p3;
-var_n_label = p4;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AWhileExpr__empty_init]))(self) /* empty_init on <self:AWhileExpr>*/;
-if (var_n_kwwhile == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5240);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwwhile].val = var_n_kwwhile; /* _n_kwwhile on <self:AWhileExpr> */
-if (var_n_kwwhile == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5241);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_kwwhile->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwwhile, self) /* parent= on <var_n_kwwhile:nullable TKwwhile>*/;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var4 /* : Bool */;
+short int var5 /* : Bool */;
+short int var6 /* : Bool */;
+var_node = p0;
+self->attrs[COLOR_parser_nodes__AForExpr___n_block].val = var_node; /* _n_block on <self:AForExpr> */
+var = NULL;
+if (var_node == NULL) {
+var1 = 0; /* is null */
+} else {
+var1 = 1; /* arg is null and recv is not */
 }
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5242);
-exit(1);
+if (0) {
+{ /* Inline kernel#Object#!= (var_node,var) on <var_node:nullable AExpr> */
+var_other = var;
+{
+var5 = ((short int (*)(val*, val*))(var_node->class->vft[COLOR_kernel__Object___61d_61d]))(var_node, var_other) /* == on <var_node:nullable AExpr(AExpr)>*/;
+var4 = var5;
 }
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AWhileExpr> */
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5243);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+var6 = !var4;
+var2 = var6;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:nullable AExpr(AExpr)> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:nullable AExpr(AExpr)> */
+RET_LABEL7:(void)0;
 }
-if (var_n_kwdo == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5244);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwdo].val = var_n_kwdo; /* _n_kwdo on <self:AWhileExpr> */
-if (var_n_kwdo == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5245);
-exit(1);
 } else {
-((void (*)(val*, val*))(var_n_kwdo->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwdo, self) /* parent= on <var_n_kwdo:nullable TKwdo>*/;
 }
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_block].val = var_n_block; /* _n_block on <self:AWhileExpr> */
+RET_LABEL:;
+}
+/* method parser_prod#AForExpr#n_block= for (self: Object, nullable AExpr) */
+void VIRTUAL_parser_prod__AForExpr__n_block_61d(val* self, val* p0) {
+parser_prod__AForExpr__n_block_61d(self, p0); /* Direct call parser_prod#AForExpr#n_block= on <self:Object(AForExpr)>*/
+RET_LABEL:;
+}
+/* method parser_prod#AForExpr#n_label= for (self: AForExpr, nullable ALabel) */
+void parser_prod__AForExpr__n_label_61d(val* self, val* p0) {
+val* var_node /* var node: nullable ALabel */;
+val* var /* : null */;
+short int var1 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var4 /* : Bool */;
+short int var5 /* : Bool */;
+short int var6 /* : Bool */;
+var_node = p0;
+self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_node; /* _n_label on <self:AForExpr> */
 var = NULL;
-if (var_n_block == NULL) {
+if (var_node == NULL) {
 var1 = 0; /* is null */
 } else {
 var1 = 1; /* arg is null and recv is not */
 }
+if (0) {
+{ /* Inline kernel#Object#!= (var_node,var) on <var_node:nullable ALabel> */
+var_other = var;
+{
+var5 = ((short int (*)(val*, val*))(var_node->class->vft[COLOR_kernel__Object___61d_61d]))(var_node, var_other) /* == on <var_node:nullable ALabel(ALabel)>*/;
+var4 = var5;
+}
+var6 = !var4;
+var2 = var6;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
 if (var1){
-((void (*)(val*, val*))(var_n_block->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_block, self) /* parent= on <var_n_block:nullable AExpr(AExpr)>*/;
-} else {
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:nullable ALabel(ALabel)> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:nullable ALabel(ALabel)> */
+RET_LABEL7:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_n_label; /* _n_label on <self:AWhileExpr> */
-var2 = NULL;
-if (var_n_label == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
 }
-if (var3){
-((void (*)(val*, val*))(var_n_label->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_label, self) /* parent= on <var_n_label:nullable ALabel(ALabel)>*/;
 } else {
 }
 RET_LABEL:;
 }
-/* method parser_prod#AWhileExpr#init_awhileexpr for (self: Object, nullable TKwwhile, nullable AExpr, nullable TKwdo, nullable AExpr, nullable ALabel) */
-void VIRTUAL_parser_prod__AWhileExpr__init_awhileexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
-parser_prod__AWhileExpr__init_awhileexpr(self, p0, p1, p2, p3, p4);
+/* method parser_prod#AForExpr#n_label= for (self: Object, nullable ALabel) */
+void VIRTUAL_parser_prod__AForExpr__n_label_61d(val* self, val* p0) {
+parser_prod__AForExpr__n_label_61d(self, p0); /* Direct call parser_prod#AForExpr#n_label= on <self:Object(AForExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AWhileExpr#replace_child for (self: AWhileExpr, ANode, nullable ANode) */
-void parser_prod__AWhileExpr__replace_child(val* self, val* p0, val* p1) {
-val* var_old_child /* var old_child: ANode */;
-val* var_new_child /* var new_child: nullable ANode */;
-val* var /* : TKwwhile */;
-short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : TKwdo */;
-short int var13 /* : Bool */;
-val* var14 /* : null */;
-short int var15 /* : Bool */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : nullable AExpr */;
-short int var20 /* : Bool */;
-val* var21 /* : null */;
-short int var22 /* : Bool */;
-short int var23 /* : Bool */;
-int cltype24;
-int idtype25;
-val* var26 /* : null */;
-val* var27 /* : nullable ALabel */;
-short int var28 /* : Bool */;
-val* var29 /* : null */;
-short int var30 /* : Bool */;
-short int var31 /* : Bool */;
-int cltype32;
-int idtype33;
-val* var34 /* : null */;
-var_old_child = p0;
-var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwwhile].val; /* _n_kwwhile on <self:AWhileExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwwhile");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5258);
-exit(1);
-}
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TKwwhile>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwwhile */
-cltype = type_parser_nodes__TKwwhile.color;
-idtype = type_parser_nodes__TKwwhile.id;
-if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5261);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwwhile].val = var_new_child; /* _n_kwwhile on <self:AWhileExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5264);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var5 = self->attrs[COLOR_parser_nodes__AWhileExpr___n_expr].val; /* _n_expr on <self:AWhileExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5268);
-exit(1);
-}
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
-}
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5271);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_expr].val = var_new_child; /* _n_expr on <self:AWhileExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5274);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var12 = self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwdo].val; /* _n_kwdo on <self:AWhileExpr> */
-if (var12 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwdo");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5278);
-exit(1);
-}
-var13 = ((short int (*)(val*, val*))(var12->class->vft[COLOR_kernel__Object___61d_61d]))(var12, var_old_child) /* == on <var12:TKwdo>*/;
-if (var13){
-var14 = NULL;
-if (var_new_child == NULL) {
-var15 = 0; /* is null */
-} else {
-var15 = 1; /* arg is null and recv is not */
-}
-if (var15){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwdo */
-cltype17 = type_parser_nodes__TKwdo.color;
-idtype18 = type_parser_nodes__TKwdo.id;
-if(cltype17 >= var_new_child->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_new_child->type->type_table[cltype17] == idtype18;
-}
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5281);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwdo].val = var_new_child; /* _n_kwdo on <self:AWhileExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5284);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var19 = self->attrs[COLOR_parser_nodes__AWhileExpr___n_block].val; /* _n_block on <self:AWhileExpr> */
-if (var19 == NULL) {
-var20 = 0; /* <var_old_child:ANode> cannot be null */
-} else {
-var20 = ((short int (*)(val*, val*))(var19->class->vft[COLOR_kernel__Object___61d_61d]))(var19, var_old_child) /* == on <var19:nullable AExpr>*/;
-}
-if (var20){
-var21 = NULL;
-if (var_new_child == NULL) {
-var22 = 0; /* is null */
-} else {
-var22 = 1; /* arg is null and recv is not */
-}
-if (var22){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype24 = type_parser_nodes__AExpr.color;
-idtype25 = type_parser_nodes__AExpr.id;
-if(cltype24 >= var_new_child->type->table_size) {
-var23 = 0;
-} else {
-var23 = var_new_child->type->type_table[cltype24] == idtype25;
-}
-if (!var23) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5291);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_block].val = var_new_child; /* _n_block on <self:AWhileExpr> */
-} else {
-var26 = NULL;
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_block].val = var26; /* _n_block on <self:AWhileExpr> */
-}
-goto RET_LABEL;
-} else {
-}
-var27 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:AWhileExpr> */
-if (var27 == NULL) {
-var28 = 0; /* <var_old_child:ANode> cannot be null */
-} else {
-var28 = ((short int (*)(val*, val*))(var27->class->vft[COLOR_kernel__Object___61d_61d]))(var27, var_old_child) /* == on <var27:nullable ALabel>*/;
-}
-if (var28){
-var29 = NULL;
-if (var_new_child == NULL) {
-var30 = 0; /* is null */
-} else {
-var30 = 1; /* arg is null and recv is not */
-}
-if (var30){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa ALabel */
-cltype32 = type_parser_nodes__ALabel.color;
-idtype33 = type_parser_nodes__ALabel.id;
-if(cltype32 >= var_new_child->type->table_size) {
-var31 = 0;
-} else {
-var31 = var_new_child->type->type_table[cltype32] == idtype33;
-}
-if (!var31) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5301);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_new_child; /* _n_label on <self:AWhileExpr> */
-} else {
-var34 = NULL;
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var34; /* _n_label on <self:AWhileExpr> */
-}
-goto RET_LABEL;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__AWhileExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AWhileExpr__replace_child(self, p0, p1);
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_kwwhile= for (self: AWhileExpr, TKwwhile) */
-void parser_prod__AWhileExpr__n_kwwhile_61d(val* self, val* p0) {
-val* var_node /* var node: TKwwhile */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwwhile].val = var_node; /* _n_kwwhile on <self:AWhileExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwwhile>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_kwwhile= for (self: Object, TKwwhile) */
-void VIRTUAL_parser_prod__AWhileExpr__n_kwwhile_61d(val* self, val* p0) {
-parser_prod__AWhileExpr__n_kwwhile_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_expr= for (self: AWhileExpr, AExpr) */
-void parser_prod__AWhileExpr__n_expr_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_expr].val = var_node; /* _n_expr on <self:AWhileExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AWhileExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AWhileExpr__n_expr_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_kwdo= for (self: AWhileExpr, TKwdo) */
-void parser_prod__AWhileExpr__n_kwdo_61d(val* self, val* p0) {
-val* var_node /* var node: TKwdo */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwdo].val = var_node; /* _n_kwdo on <self:AWhileExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwdo>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_kwdo= for (self: Object, TKwdo) */
-void VIRTUAL_parser_prod__AWhileExpr__n_kwdo_61d(val* self, val* p0) {
-parser_prod__AWhileExpr__n_kwdo_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_block= for (self: AWhileExpr, nullable AExpr) */
-void parser_prod__AWhileExpr__n_block_61d(val* self, val* p0) {
-val* var_node /* var node: nullable AExpr */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AWhileExpr___n_block].val = var_node; /* _n_block on <self:AWhileExpr> */
-var = NULL;
-if (var_node == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable AExpr(AExpr)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_block= for (self: Object, nullable AExpr) */
-void VIRTUAL_parser_prod__AWhileExpr__n_block_61d(val* self, val* p0) {
-parser_prod__AWhileExpr__n_block_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_label= for (self: AWhileExpr, nullable ALabel) */
-void parser_prod__AWhileExpr__n_label_61d(val* self, val* p0) {
-val* var_node /* var node: nullable ALabel */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_node; /* _n_label on <self:AWhileExpr> */
-var = NULL;
-if (var_node == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable ALabel(ALabel)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#n_label= for (self: Object, nullable ALabel) */
-void VIRTUAL_parser_prod__AWhileExpr__n_label_61d(val* self, val* p0) {
-parser_prod__AWhileExpr__n_label_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#visit_all for (self: AWhileExpr, Visitor) */
-void parser_prod__AWhileExpr__visit_all(val* self, val* p0) {
-val* var_v /* var v: Visitor */;
-val* var /* : TKwwhile */;
-val* var1 /* : AExpr */;
-val* var2 /* : TKwdo */;
-val* var3 /* : nullable AExpr */;
-val* var4 /* : null */;
-short int var5 /* : Bool */;
-val* var6 /* : nullable AExpr */;
-val* var7 /* : nullable ALabel */;
-val* var8 /* : null */;
-short int var9 /* : Bool */;
-val* var10 /* : nullable ALabel */;
-var_v = p0;
-var = self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwwhile].val; /* _n_kwwhile on <self:AWhileExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwwhile");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5343);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__AWhileExpr___n_expr].val; /* _n_expr on <self:AWhileExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5344);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-var2 = self->attrs[COLOR_parser_nodes__AWhileExpr___n_kwdo].val; /* _n_kwdo on <self:AWhileExpr> */
-if (var2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwdo");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5345);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var2) /* enter_visit on <var_v:Visitor>*/;
-var3 = self->attrs[COLOR_parser_nodes__AWhileExpr___n_block].val; /* _n_block on <self:AWhileExpr> */
-var4 = NULL;
-if (var3 == NULL) {
-var5 = 0; /* is null */
-} else {
-var5 = 1; /* arg is null and recv is not */
-}
-if (var5){
-var6 = self->attrs[COLOR_parser_nodes__AWhileExpr___n_block].val; /* _n_block on <self:AWhileExpr> */
-if (var6 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5347);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var6) /* enter_visit on <var_v:Visitor>*/;
-} else {
-}
-var7 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:AWhileExpr> */
-var8 = NULL;
-if (var7 == NULL) {
-var9 = 0; /* is null */
-} else {
-var9 = 1; /* arg is null and recv is not */
-}
-if (var9){
-var10 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:AWhileExpr> */
-if (var10 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5350);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var10) /* enter_visit on <var_v:Visitor>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AWhileExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__AWhileExpr__visit_all(val* self, val* p0) {
-parser_prod__AWhileExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#empty_init for (self: ALoopExpr) */
-void parser_prod__ALoopExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ALoopExpr__empty_init(val* self) {
-parser_prod__ALoopExpr__empty_init(self);
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#init_aloopexpr for (self: ALoopExpr, nullable TKwloop, nullable AExpr, nullable ALabel) */
-void parser_prod__ALoopExpr__init_aloopexpr(val* self, val* p0, val* p1, val* p2) {
-val* var_n_kwloop /* var n_kwloop: nullable TKwloop */;
-val* var_n_block /* var n_block: nullable AExpr */;
-val* var_n_label /* var n_label: nullable ALabel */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-var_n_kwloop = p0;
-var_n_block = p1;
-var_n_label = p2;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ALoopExpr__empty_init]))(self) /* empty_init on <self:ALoopExpr>*/;
-if (var_n_kwloop == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5364);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ALoopExpr___n_kwloop].val = var_n_kwloop; /* _n_kwloop on <self:ALoopExpr> */
-if (var_n_kwloop == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5365);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_kwloop->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwloop, self) /* parent= on <var_n_kwloop:nullable TKwloop>*/;
-}
-self->attrs[COLOR_parser_nodes__ALoopExpr___n_block].val = var_n_block; /* _n_block on <self:ALoopExpr> */
-var = NULL;
-if (var_n_block == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_n_block->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_block, self) /* parent= on <var_n_block:nullable AExpr(AExpr)>*/;
-} else {
-}
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_n_label; /* _n_label on <self:ALoopExpr> */
-var2 = NULL;
-if (var_n_label == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-((void (*)(val*, val*))(var_n_label->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_label, self) /* parent= on <var_n_label:nullable ALabel(ALabel)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#init_aloopexpr for (self: Object, nullable TKwloop, nullable AExpr, nullable ALabel) */
-void VIRTUAL_parser_prod__ALoopExpr__init_aloopexpr(val* self, val* p0, val* p1, val* p2) {
-parser_prod__ALoopExpr__init_aloopexpr(self, p0, p1, p2);
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#replace_child for (self: ALoopExpr, ANode, nullable ANode) */
-void parser_prod__ALoopExpr__replace_child(val* self, val* p0, val* p1) {
-val* var_old_child /* var old_child: ANode */;
-val* var_new_child /* var new_child: nullable ANode */;
-val* var /* : TKwloop */;
-short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var5 /* : nullable AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : null */;
-val* var13 /* : nullable ALabel */;
-short int var14 /* : Bool */;
-val* var15 /* : null */;
-short int var16 /* : Bool */;
-short int var17 /* : Bool */;
-int cltype18;
-int idtype19;
-val* var20 /* : null */;
-var_old_child = p0;
-var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ALoopExpr___n_kwloop].val; /* _n_kwloop on <self:ALoopExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwloop");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5378);
-exit(1);
-}
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TKwloop>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwloop */
-cltype = type_parser_nodes__TKwloop.color;
-idtype = type_parser_nodes__TKwloop.id;
-if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5381);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ALoopExpr___n_kwloop].val = var_new_child; /* _n_kwloop on <self:ALoopExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5384);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var5 = self->attrs[COLOR_parser_nodes__ALoopExpr___n_block].val; /* _n_block on <self:ALoopExpr> */
-if (var5 == NULL) {
-var6 = 0; /* <var_old_child:ANode> cannot be null */
-} else {
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:nullable AExpr>*/;
-}
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
-}
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5391);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ALoopExpr___n_block].val = var_new_child; /* _n_block on <self:ALoopExpr> */
-} else {
-var12 = NULL;
-self->attrs[COLOR_parser_nodes__ALoopExpr___n_block].val = var12; /* _n_block on <self:ALoopExpr> */
-}
-goto RET_LABEL;
-} else {
-}
-var13 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:ALoopExpr> */
-if (var13 == NULL) {
-var14 = 0; /* <var_old_child:ANode> cannot be null */
-} else {
-var14 = ((short int (*)(val*, val*))(var13->class->vft[COLOR_kernel__Object___61d_61d]))(var13, var_old_child) /* == on <var13:nullable ALabel>*/;
-}
-if (var14){
-var15 = NULL;
-if (var_new_child == NULL) {
-var16 = 0; /* is null */
-} else {
-var16 = 1; /* arg is null and recv is not */
-}
-if (var16){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa ALabel */
-cltype18 = type_parser_nodes__ALabel.color;
-idtype19 = type_parser_nodes__ALabel.id;
-if(cltype18 >= var_new_child->type->table_size) {
-var17 = 0;
-} else {
-var17 = var_new_child->type->type_table[cltype18] == idtype19;
-}
-if (!var17) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5401);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_new_child; /* _n_label on <self:ALoopExpr> */
-} else {
-var20 = NULL;
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var20; /* _n_label on <self:ALoopExpr> */
-}
-goto RET_LABEL;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__ALoopExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ALoopExpr__replace_child(self, p0, p1);
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#n_kwloop= for (self: ALoopExpr, TKwloop) */
-void parser_prod__ALoopExpr__n_kwloop_61d(val* self, val* p0) {
-val* var_node /* var node: TKwloop */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ALoopExpr___n_kwloop].val = var_node; /* _n_kwloop on <self:ALoopExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwloop>*/;
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#n_kwloop= for (self: Object, TKwloop) */
-void VIRTUAL_parser_prod__ALoopExpr__n_kwloop_61d(val* self, val* p0) {
-parser_prod__ALoopExpr__n_kwloop_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#n_block= for (self: ALoopExpr, nullable AExpr) */
-void parser_prod__ALoopExpr__n_block_61d(val* self, val* p0) {
-val* var_node /* var node: nullable AExpr */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ALoopExpr___n_block].val = var_node; /* _n_block on <self:ALoopExpr> */
-var = NULL;
-if (var_node == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable AExpr(AExpr)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#n_block= for (self: Object, nullable AExpr) */
-void VIRTUAL_parser_prod__ALoopExpr__n_block_61d(val* self, val* p0) {
-parser_prod__ALoopExpr__n_block_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#n_label= for (self: ALoopExpr, nullable ALabel) */
-void parser_prod__ALoopExpr__n_label_61d(val* self, val* p0) {
-val* var_node /* var node: nullable ALabel */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_node; /* _n_label on <self:ALoopExpr> */
-var = NULL;
-if (var_node == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable ALabel(ALabel)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#n_label= for (self: Object, nullable ALabel) */
-void VIRTUAL_parser_prod__ALoopExpr__n_label_61d(val* self, val* p0) {
-parser_prod__ALoopExpr__n_label_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#visit_all for (self: ALoopExpr, Visitor) */
-void parser_prod__ALoopExpr__visit_all(val* self, val* p0) {
-val* var_v /* var v: Visitor */;
-val* var /* : TKwloop */;
-val* var1 /* : nullable AExpr */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-val* var4 /* : nullable AExpr */;
-val* var5 /* : nullable ALabel */;
-val* var6 /* : null */;
-short int var7 /* : Bool */;
-val* var8 /* : nullable ALabel */;
-var_v = p0;
-var = self->attrs[COLOR_parser_nodes__ALoopExpr___n_kwloop].val; /* _n_kwloop on <self:ALoopExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwloop");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5433);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__ALoopExpr___n_block].val; /* _n_block on <self:ALoopExpr> */
-var2 = NULL;
-if (var1 == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-var4 = self->attrs[COLOR_parser_nodes__ALoopExpr___n_block].val; /* _n_block on <self:ALoopExpr> */
-if (var4 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5435);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var4) /* enter_visit on <var_v:Visitor>*/;
-} else {
-}
-var5 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:ALoopExpr> */
-var6 = NULL;
-if (var5 == NULL) {
-var7 = 0; /* is null */
-} else {
-var7 = 1; /* arg is null and recv is not */
-}
-if (var7){
-var8 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:ALoopExpr> */
-if (var8 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5438);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var8) /* enter_visit on <var_v:Visitor>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#ALoopExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__ALoopExpr__visit_all(val* self, val* p0) {
-parser_prod__ALoopExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#empty_init for (self: AForExpr) */
-void parser_prod__AForExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AForExpr__empty_init(val* self) {
-parser_prod__AForExpr__empty_init(self);
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#init_aforexpr for (self: AForExpr, nullable TKwfor, Collection[Object], nullable AExpr, nullable TKwdo, nullable AExpr, nullable ALabel) */
-void parser_prod__AForExpr__init_aforexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4, val* p5) {
-val* var_n_kwfor /* var n_kwfor: nullable TKwfor */;
-val* var_n_ids /* var n_ids: Collection[Object] */;
-val* var_n_expr /* var n_expr: nullable AExpr */;
-val* var_n_kwdo /* var n_kwdo: nullable TKwdo */;
-val* var_n_block /* var n_block: nullable AExpr */;
-val* var_n_label /* var n_label: nullable ALabel */;
-val* var /* : Iterator[nullable Object] */;
-short int var1 /* : Bool */;
-val* var2 /* : nullable Object */;
-val* var_n /* var n: Object */;
-short int var3 /* : Bool */;
-int cltype;
-int idtype;
-val* var4 /* : ANodes[TId] */;
-val* var5 /* : null */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
-var_n_kwfor = p0;
-var_n_ids = p1;
-var_n_expr = p2;
-var_n_kwdo = p3;
-var_n_block = p4;
-var_n_label = p5;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AForExpr__empty_init]))(self) /* empty_init on <self:AForExpr>*/;
-if (var_n_kwfor == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5455);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AForExpr___n_kwfor].val = var_n_kwfor; /* _n_kwfor on <self:AForExpr> */
-if (var_n_kwfor == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5456);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_kwfor->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwfor, self) /* parent= on <var_n_kwfor:nullable TKwfor>*/;
-}
-var = ((val* (*)(val*))(var_n_ids->class->vft[COLOR_abstract_collection__Collection__iterator]))(var_n_ids) /* iterator on <var_n_ids:Collection[Object]>*/;
-for(;;) {
-var1 = ((short int (*)(val*))(var->class->vft[COLOR_abstract_collection__Iterator__is_ok]))(var) /* is_ok on <var:Iterator[nullable Object]>*/;
-if(!var1) break;
-var2 = ((val* (*)(val*))(var->class->vft[COLOR_abstract_collection__Iterator__item]))(var) /* item on <var:Iterator[nullable Object]>*/;
-var_n = var2;
-/* <var_n:Object> isa TId */
-cltype = type_parser_nodes__TId.color;
-idtype = type_parser_nodes__TId.id;
-if(cltype >= var_n->type->table_size) {
-var3 = 0;
-} else {
-var3 = var_n->type->type_table[cltype] == idtype;
-}
-if (!var3) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5458);
-exit(1);
-}
-var4 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
-if (var4 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_ids");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5459);
-exit(1);
-}
-((void (*)(val*, val*))(var4->class->vft[COLOR_abstract_collection__SimpleCollection__add]))(var4, var_n) /* add on <var4:ANodes[TId]>*/;
-((void (*)(val*, val*))(var_n->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n, self) /* parent= on <var_n:Object(TId)>*/;
-CONTINUE_label: (void)0;
-((void (*)(val*))(var->class->vft[COLOR_abstract_collection__Iterator__next]))(var) /* next on <var:Iterator[nullable Object]>*/;
-}
-BREAK_label: (void)0;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5462);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AForExpr> */
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5463);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
-}
-if (var_n_kwdo == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5464);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val = var_n_kwdo; /* _n_kwdo on <self:AForExpr> */
-if (var_n_kwdo == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5465);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_kwdo->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwdo, self) /* parent= on <var_n_kwdo:nullable TKwdo>*/;
-}
-self->attrs[COLOR_parser_nodes__AForExpr___n_block].val = var_n_block; /* _n_block on <self:AForExpr> */
-var5 = NULL;
-if (var_n_block == NULL) {
-var6 = 0; /* is null */
-} else {
-var6 = 1; /* arg is null and recv is not */
-}
-if (var6){
-((void (*)(val*, val*))(var_n_block->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_block, self) /* parent= on <var_n_block:nullable AExpr(AExpr)>*/;
-} else {
-}
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_n_label; /* _n_label on <self:AForExpr> */
-var7 = NULL;
-if (var_n_label == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
-}
-if (var8){
-((void (*)(val*, val*))(var_n_label->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_label, self) /* parent= on <var_n_label:nullable ALabel(ALabel)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#init_aforexpr for (self: Object, nullable TKwfor, Collection[Object], nullable AExpr, nullable TKwdo, nullable AExpr, nullable ALabel) */
-void VIRTUAL_parser_prod__AForExpr__init_aforexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4, val* p5) {
-parser_prod__AForExpr__init_aforexpr(self, p0, p1, p2, p3, p4, p5);
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#replace_child for (self: AForExpr, ANode, nullable ANode) */
-void parser_prod__AForExpr__replace_child(val* self, val* p0, val* p1) {
-val* var_old_child /* var old_child: ANode */;
-val* var_new_child /* var new_child: nullable ANode */;
+/* method parser_prod#AForExpr#visit_all for (self: AForExpr, Visitor) */
+void parser_prod__AForExpr__visit_all(val* self, val* p0) {
+val* var_v /* var v: Visitor */;
 val* var /* : TKwfor */;
-short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var5 /* : Range[Int] */;
-long var6 /* : Int */;
-val* var7 /* : ANodes[TId] */;
-long var8 /* : Int */;
-val* var9 /* : Discrete */;
-val* var10 /* : Discrete */;
-val* var11 /* : Iterator[nullable Object] */;
-short int var12 /* : Bool */;
-val* var13 /* : nullable Object */;
-long var_i /* var i: Int */;
-long var14 /* : Int */;
-val* var15 /* : ANodes[TId] */;
-val* var16 /* : nullable Object */;
-short int var17 /* : Bool */;
-val* var18 /* : null */;
-short int var19 /* : Bool */;
-short int var20 /* : Bool */;
-int cltype21;
-int idtype22;
-val* var23 /* : ANodes[TId] */;
-val* var24 /* : ANodes[TId] */;
-val* var25 /* : AExpr */;
-short int var26 /* : Bool */;
-val* var27 /* : null */;
-short int var28 /* : Bool */;
-short int var29 /* : Bool */;
-int cltype30;
-int idtype31;
-val* var32 /* : TKwdo */;
-short int var33 /* : Bool */;
-val* var34 /* : null */;
-short int var35 /* : Bool */;
-short int var36 /* : Bool */;
-int cltype37;
-int idtype38;
-val* var39 /* : nullable AExpr */;
-short int var40 /* : Bool */;
-val* var41 /* : null */;
-short int var42 /* : Bool */;
-short int var43 /* : Bool */;
-int cltype44;
-int idtype45;
-val* var46 /* : null */;
-val* var47 /* : nullable ALabel */;
-short int var48 /* : Bool */;
-val* var49 /* : null */;
-short int var50 /* : Bool */;
-short int var51 /* : Bool */;
-int cltype52;
-int idtype53;
-val* var54 /* : null */;
-var_old_child = p0;
-var_new_child = p1;
+val* var1 /* : ANodes[TId] */;
+val* var3 /* : ANodes[TId] */;
+val* var4 /* : AExpr */;
+val* var5 /* : TKwdo */;
+val* var6 /* : nullable AExpr */;
+val* var7 /* : nullable ALabel */;
+var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AForExpr___n_kwfor].val; /* _n_kwfor on <self:AForExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwfor");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5478);
-exit(1);
-}
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TKwfor>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwfor */
-cltype = type_parser_nodes__TKwfor.color;
-idtype = type_parser_nodes__TKwfor.id;
-if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5481);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AForExpr___n_kwfor].val = var_new_child; /* _n_kwfor on <self:AForExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5484);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var5 = NEW_range__Range(&type_range__Rangekernel__Int);
-var6 = 0;
-var7 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
-if (var7 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_ids");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5488);
-exit(1);
-}
-var8 = ((long (*)(val*))(var7->class->vft[COLOR_abstract_collection__Collection__length]))(var7) /* length on <var7:ANodes[TId]>*/;
-var9 = BOX_kernel__Int(var6); /* autobox from Int to Discrete */
-var10 = BOX_kernel__Int(var8); /* autobox from Int to Discrete */
-((void (*)(val*, val*, val*))(var5->class->vft[COLOR_range__Range__without_last]))(var5, var9, var10) /* without_last on <var5:Range[Int]>*/;
-CHECK_NEW_range__Range(var5);
-var11 = ((val* (*)(val*))(var5->class->vft[COLOR_abstract_collection__Collection__iterator]))(var5) /* iterator on <var5:Range[Int]>*/;
-for(;;) {
-var12 = ((short int (*)(val*))(var11->class->vft[COLOR_abstract_collection__Iterator__is_ok]))(var11) /* is_ok on <var11:Iterator[nullable Object]>*/;
-if(!var12) break;
-var13 = ((val* (*)(val*))(var11->class->vft[COLOR_abstract_collection__Iterator__item]))(var11) /* item on <var11:Iterator[nullable Object]>*/;
-var14 = ((struct instance_kernel__Int*)var13)->value; /* autounbox from nullable Object to Int */;
-var_i = var14;
-var15 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
-if (var15 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_ids");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5489);
-exit(1);
-}
-var16 = ((val* (*)(val*, long))(var15->class->vft[COLOR_abstract_collection__SequenceRead___91d_93d]))(var15, var_i) /* [] on <var15:ANodes[TId]>*/;
-var17 = ((short int (*)(val*, val*))(var16->class->vft[COLOR_kernel__Object___61d_61d]))(var16, var_old_child) /* == on <var16:nullable Object(TId)>*/;
-if (var17){
-var18 = NULL;
-if (var_new_child == NULL) {
-var19 = 0; /* is null */
-} else {
-var19 = 1; /* arg is null and recv is not */
-}
-if (var19){
-/* <var_new_child:nullable ANode(ANode)> isa TId */
-cltype21 = type_parser_nodes__TId.color;
-idtype22 = type_parser_nodes__TId.id;
-if(cltype21 >= var_new_child->type->table_size) {
-var20 = 0;
-} else {
-var20 = var_new_child->type->type_table[cltype21] == idtype22;
-}
-if (!var20) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5491);
-exit(1);
-}
-var23 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
-if (var23 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_ids");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5492);
-exit(1);
-}
-((void (*)(val*, long, val*))(var23->class->vft[COLOR_abstract_collection__Sequence___91d_93d_61d]))(var23, var_i, var_new_child) /* []= on <var23:ANodes[TId]>*/;
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(TId)>*/;
-} else {
-var24 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
-if (var24 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_ids");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5495);
-exit(1);
-}
-((void (*)(val*, long))(var24->class->vft[COLOR_abstract_collection__Sequence__remove_at]))(var24, var_i) /* remove_at on <var24:ANodes[TId]>*/;
-}
-goto RET_LABEL;
-} else {
-}
-CONTINUE_label: (void)0;
-((void (*)(val*))(var11->class->vft[COLOR_abstract_collection__Iterator__next]))(var11) /* next on <var11:Iterator[nullable Object]>*/;
-}
-BREAK_label: (void)0;
-var25 = self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val; /* _n_expr on <self:AForExpr> */
-if (var25 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5500);
-exit(1);
-}
-var26 = ((short int (*)(val*, val*))(var25->class->vft[COLOR_kernel__Object___61d_61d]))(var25, var_old_child) /* == on <var25:AExpr>*/;
-if (var26){
-var27 = NULL;
-if (var_new_child == NULL) {
-var28 = 0; /* is null */
-} else {
-var28 = 1; /* arg is null and recv is not */
-}
-if (var28){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype30 = type_parser_nodes__AExpr.color;
-idtype31 = type_parser_nodes__AExpr.id;
-if(cltype30 >= var_new_child->type->table_size) {
-var29 = 0;
-} else {
-var29 = var_new_child->type->type_table[cltype30] == idtype31;
-}
-if (!var29) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5503);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val = var_new_child; /* _n_expr on <self:AForExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5506);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var32 = self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val; /* _n_kwdo on <self:AForExpr> */
-if (var32 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwdo");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5510);
-exit(1);
-}
-var33 = ((short int (*)(val*, val*))(var32->class->vft[COLOR_kernel__Object___61d_61d]))(var32, var_old_child) /* == on <var32:TKwdo>*/;
-if (var33){
-var34 = NULL;
-if (var_new_child == NULL) {
-var35 = 0; /* is null */
-} else {
-var35 = 1; /* arg is null and recv is not */
-}
-if (var35){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwdo */
-cltype37 = type_parser_nodes__TKwdo.color;
-idtype38 = type_parser_nodes__TKwdo.id;
-if(cltype37 >= var_new_child->type->table_size) {
-var36 = 0;
-} else {
-var36 = var_new_child->type->type_table[cltype37] == idtype38;
-}
-if (!var36) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5513);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val = var_new_child; /* _n_kwdo on <self:AForExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5516);
-exit(1);
-}
-goto RET_LABEL;
-} else {
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwfor");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2833);
+show_backtrace(1);
 }
-var39 = self->attrs[COLOR_parser_nodes__AForExpr___n_block].val; /* _n_block on <self:AForExpr> */
-if (var39 == NULL) {
-var40 = 0; /* <var_old_child:ANode> cannot be null */
-} else {
-var40 = ((short int (*)(val*, val*))(var39->class->vft[COLOR_kernel__Object___61d_61d]))(var39, var_old_child) /* == on <var39:nullable AExpr>*/;
-}
-if (var40){
-var41 = NULL;
-if (var_new_child == NULL) {
-var42 = 0; /* is null */
-} else {
-var42 = 1; /* arg is null and recv is not */
-}
-if (var42){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype44 = type_parser_nodes__AExpr.color;
-idtype45 = type_parser_nodes__AExpr.id;
-if(cltype44 >= var_new_child->type->table_size) {
-var43 = 0;
-} else {
-var43 = var_new_child->type->type_table[cltype44] == idtype45;
-}
-if (!var43) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5523);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AForExpr___n_block].val = var_new_child; /* _n_block on <self:AForExpr> */
-} else {
-var46 = NULL;
-self->attrs[COLOR_parser_nodes__AForExpr___n_block].val = var46; /* _n_block on <self:AForExpr> */
-}
-goto RET_LABEL;
-} else {
-}
-var47 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:AForExpr> */
-if (var47 == NULL) {
-var48 = 0; /* <var_old_child:ANode> cannot be null */
-} else {
-var48 = ((short int (*)(val*, val*))(var47->class->vft[COLOR_kernel__Object___61d_61d]))(var47, var_old_child) /* == on <var47:nullable ALabel>*/;
-}
-if (var48){
-var49 = NULL;
-if (var_new_child == NULL) {
-var50 = 0; /* is null */
-} else {
-var50 = 1; /* arg is null and recv is not */
-}
-if (var50){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa ALabel */
-cltype52 = type_parser_nodes__ALabel.color;
-idtype53 = type_parser_nodes__ALabel.id;
-if(cltype52 >= var_new_child->type->table_size) {
-var51 = 0;
-} else {
-var51 = var_new_child->type->type_table[cltype52] == idtype53;
-}
-if (!var51) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5533);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_new_child; /* _n_label on <self:AForExpr> */
-} else {
-var54 = NULL;
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var54; /* _n_label on <self:AForExpr> */
-}
-goto RET_LABEL;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__AForExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AForExpr__replace_child(self, p0, p1);
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#n_kwfor= for (self: AForExpr, TKwfor) */
-void parser_prod__AForExpr__n_kwfor_61d(val* self, val* p0) {
-val* var_node /* var node: TKwfor */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AForExpr___n_kwfor].val = var_node; /* _n_kwfor on <self:AForExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwfor>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#n_kwfor= for (self: Object, TKwfor) */
-void VIRTUAL_parser_prod__AForExpr__n_kwfor_61d(val* self, val* p0) {
-parser_prod__AForExpr__n_kwfor_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#n_expr= for (self: AForExpr, AExpr) */
-void parser_prod__AForExpr__n_expr_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val = var_node; /* _n_expr on <self:AForExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AForExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AForExpr__n_expr_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#n_kwdo= for (self: AForExpr, TKwdo) */
-void parser_prod__AForExpr__n_kwdo_61d(val* self, val* p0) {
-val* var_node /* var node: TKwdo */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val = var_node; /* _n_kwdo on <self:AForExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwdo>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#n_kwdo= for (self: Object, TKwdo) */
-void VIRTUAL_parser_prod__AForExpr__n_kwdo_61d(val* self, val* p0) {
-parser_prod__AForExpr__n_kwdo_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#n_block= for (self: AForExpr, nullable AExpr) */
-void parser_prod__AForExpr__n_block_61d(val* self, val* p0) {
-val* var_node /* var node: nullable AExpr */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AForExpr___n_block].val = var_node; /* _n_block on <self:AForExpr> */
-var = NULL;
-if (var_node == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable AExpr(AExpr)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AForExpr#n_block= for (self: Object, nullable AExpr) */
-void VIRTUAL_parser_prod__AForExpr__n_block_61d(val* self, val* p0) {
-parser_prod__AForExpr__n_block_61d(self, p0);
-RET_LABEL:;
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#AForExpr#n_label= for (self: AForExpr, nullable ALabel) */
-void parser_prod__AForExpr__n_label_61d(val* self, val* p0) {
-val* var_node /* var node: nullable ALabel */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ALabelable___n_label].val = var_node; /* _n_label on <self:AForExpr> */
-var = NULL;
-if (var_node == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
+{
+{ /* Inline parser_nodes#AForExpr#n_ids (self) on <self:AForExpr> */
+var3 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
+if (unlikely(var3 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_ids");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 1426);
+show_backtrace(1);
 }
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable ALabel(ALabel)>*/;
-} else {
+var1 = var3;
+RET_LABEL2:(void)0;
 }
-RET_LABEL:;
 }
-/* method parser_prod#AForExpr#n_label= for (self: Object, nullable ALabel) */
-void VIRTUAL_parser_prod__AForExpr__n_label_61d(val* self, val* p0) {
-parser_prod__AForExpr__n_label_61d(self, p0);
-RET_LABEL:;
+{
+parser_nodes__ANodes__visit_all(var1, var_v); /* Direct call parser_nodes#ANodes#visit_all on <var1:ANodes[TId]>*/
 }
-/* method parser_prod#AForExpr#visit_all for (self: AForExpr, Visitor) */
-void parser_prod__AForExpr__visit_all(val* self, val* p0) {
-val* var_v /* var v: Visitor */;
-val* var /* : TKwfor */;
-val* var1 /* : ANodes[TId] */;
-val* var2 /* : Iterator[nullable Object] */;
-short int var3 /* : Bool */;
-val* var4 /* : nullable Object */;
-val* var_n /* var n: TId */;
-val* var5 /* : AExpr */;
-val* var6 /* : TKwdo */;
-val* var7 /* : nullable AExpr */;
-val* var8 /* : null */;
-short int var9 /* : Bool */;
-val* var10 /* : nullable AExpr */;
-val* var11 /* : nullable ALabel */;
-val* var12 /* : null */;
-short int var13 /* : Bool */;
-val* var14 /* : nullable ALabel */;
-var_v = p0;
-var = self->attrs[COLOR_parser_nodes__AForExpr___n_kwfor].val; /* _n_kwfor on <self:AForExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwfor");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5575);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__AForExpr___n_ids].val; /* _n_ids on <self:AForExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_ids");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5576);
-exit(1);
-}
-var2 = ((val* (*)(val*))(var1->class->vft[COLOR_abstract_collection__Collection__iterator]))(var1) /* iterator on <var1:ANodes[TId]>*/;
-for(;;) {
-var3 = ((short int (*)(val*))(var2->class->vft[COLOR_abstract_collection__Iterator__is_ok]))(var2) /* is_ok on <var2:Iterator[nullable Object]>*/;
-if(!var3) break;
-var4 = ((val* (*)(val*))(var2->class->vft[COLOR_abstract_collection__Iterator__item]))(var2) /* item on <var2:Iterator[nullable Object]>*/;
-var_n = var4;
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var_n) /* enter_visit on <var_v:Visitor>*/;
-CONTINUE_label: (void)0;
-((void (*)(val*))(var2->class->vft[COLOR_abstract_collection__Iterator__next]))(var2) /* next on <var2:Iterator[nullable Object]>*/;
-}
-BREAK_label: (void)0;
-var5 = self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val; /* _n_expr on <self:AForExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5579);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var5) /* enter_visit on <var_v:Visitor>*/;
-var6 = self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val; /* _n_kwdo on <self:AForExpr> */
-if (var6 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwdo");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5580);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var6) /* enter_visit on <var_v:Visitor>*/;
-var7 = self->attrs[COLOR_parser_nodes__AForExpr___n_block].val; /* _n_block on <self:AForExpr> */
-var8 = NULL;
-if (var7 == NULL) {
-var9 = 0; /* is null */
-} else {
-var9 = 1; /* arg is null and recv is not */
+var4 = self->attrs[COLOR_parser_nodes__AForExpr___n_expr].val; /* _n_expr on <self:AForExpr> */
+if (unlikely(var4 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2835);
+show_backtrace(1);
 }
-if (var9){
-var10 = self->attrs[COLOR_parser_nodes__AForExpr___n_block].val; /* _n_block on <self:AForExpr> */
-if (var10 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5582);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var4); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var10) /* enter_visit on <var_v:Visitor>*/;
-} else {
+var5 = self->attrs[COLOR_parser_nodes__AForExpr___n_kwdo].val; /* _n_kwdo on <self:AForExpr> */
+if (unlikely(var5 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwdo");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2836);
+show_backtrace(1);
 }
-var11 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:AForExpr> */
-var12 = NULL;
-if (var11 == NULL) {
-var13 = 0; /* is null */
-} else {
-var13 = 1; /* arg is null and recv is not */
+{
+parser_nodes__Visitor__enter_visit(var_v, var5); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-if (var13){
-var14 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:AForExpr> */
-if (var14 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5585);
-exit(1);
+var6 = self->attrs[COLOR_parser_nodes__AForExpr___n_block].val; /* _n_block on <self:AForExpr> */
+{
+parser_nodes__Visitor__enter_visit(var_v, var6); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var14) /* enter_visit on <var_v:Visitor>*/;
-} else {
+var7 = self->attrs[COLOR_parser_nodes__ALabelable___n_label].val; /* _n_label on <self:AForExpr> */
+{
+parser_nodes__Visitor__enter_visit(var_v, var7); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
 RET_LABEL:;
 }
 /* method parser_prod#AForExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AForExpr__visit_all(val* self, val* p0) {
-parser_prod__AForExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#empty_init for (self: AAssertExpr) */
-void parser_prod__AAssertExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AAssertExpr__empty_init(val* self) {
-parser_prod__AAssertExpr__empty_init(self);
+parser_prod__AForExpr__visit_all(self, p0); /* Direct call parser_prod#AForExpr#visit_all on <self:Object(AForExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAssertExpr#init_aassertexpr for (self: AAssertExpr, nullable TKwassert, nullable TId, nullable AExpr, nullable AExpr) */
@@ -2021,67 +713,129 @@ val* var_n_id /* var n_id: nullable TId */;
 val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_else /* var n_else: nullable AExpr */;
 val* var /* : null */;
-short int var1 /* : Bool */;
-val* var2 /* : null */;
+short int var2 /* : Bool */;
 short int var3 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var5 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
+val* var10 /* : null */;
+short int var11 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+short int var16 /* : Bool */;
 var_n_kwassert = p0;
 var_n_id = p1;
 var_n_expr = p2;
 var_n_else = p3;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AAssertExpr__empty_init]))(self) /* empty_init on <self:AAssertExpr>*/;
-if (var_n_kwassert == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5600);
-exit(1);
+if (unlikely(var_n_kwassert == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2849);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAssertExpr___n_kwassert].val = var_n_kwassert; /* _n_kwassert on <self:AAssertExpr> */
 if (var_n_kwassert == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5601);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2850);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_kwassert->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwassert, self) /* parent= on <var_n_kwassert:nullable TKwassert>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_kwassert,self) on <var_n_kwassert:nullable TKwassert> */
+if (unlikely(var_n_kwassert == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_kwassert->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_kwassert:nullable TKwassert> */
+RET_LABEL1:(void)0;
+}
 }
 self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val = var_n_id; /* _n_id on <self:AAssertExpr> */
 var = NULL;
 if (var_n_id == NULL) {
-var1 = 0; /* is null */
+var2 = 0; /* is null */
 } else {
-var1 = 1; /* arg is null and recv is not */
+var2 = 1; /* arg is null and recv is not */
+}
+if (0) {
+{ /* Inline kernel#Object#!= (var_n_id,var) on <var_n_id:nullable TId> */
+var_other = var;
+{
+var6 = ((short int (*)(val*, val*))(var_n_id->class->vft[COLOR_kernel__Object___61d_61d]))(var_n_id, var_other) /* == on <var_n_id:nullable TId(TId)>*/;
+var5 = var6;
+}
+var7 = !var5;
+var3 = var7;
+goto RET_LABEL4;
+RET_LABEL4:(void)0;
+}
+var2 = var3;
+}
+if (var2){
+{
+{ /* Inline parser_nodes#ANode#parent= (var_n_id,self) on <var_n_id:nullable TId(TId)> */
+var_n_id->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_id:nullable TId(TId)> */
+RET_LABEL8:(void)0;
+}
 }
-if (var1){
-((void (*)(val*, val*))(var_n_id->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_id, self) /* parent= on <var_n_id:nullable TId(TId)>*/;
 } else {
 }
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5606);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2853);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAssertExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AAssertExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5607);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2854);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL9:(void)0;
+}
 }
 self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val = var_n_else; /* _n_else on <self:AAssertExpr> */
-var2 = NULL;
+var10 = NULL;
 if (var_n_else == NULL) {
-var3 = 0; /* is null */
+var11 = 0; /* is null */
 } else {
-var3 = 1; /* arg is null and recv is not */
+var11 = 1; /* arg is null and recv is not */
+}
+if (0) {
+{ /* Inline kernel#Object#!= (var_n_else,var10) on <var_n_else:nullable AExpr> */
+var_other = var10;
+{
+var15 = ((short int (*)(val*, val*))(var_n_else->class->vft[COLOR_kernel__Object___61d_61d]))(var_n_else, var_other) /* == on <var_n_else:nullable AExpr(AExpr)>*/;
+var14 = var15;
+}
+var16 = !var14;
+var12 = var16;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
+}
+var11 = var12;
+}
+if (var11){
+{
+{ /* Inline parser_nodes#ANode#parent= (var_n_else,self) on <var_n_else:nullable AExpr(AExpr)> */
+var_n_else->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_else:nullable AExpr(AExpr)> */
+RET_LABEL17:(void)0;
+}
 }
-if (var3){
-((void (*)(val*, val*))(var_n_else->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_else, self) /* parent= on <var_n_else:nullable AExpr(AExpr)>*/;
 } else {
 }
 RET_LABEL:;
 }
 /* method parser_prod#AAssertExpr#init_aassertexpr for (self: Object, nullable TKwassert, nullable TId, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AAssertExpr__init_aassertexpr(val* self, val* p0, val* p1, val* p2, val* p3) {
-parser_prod__AAssertExpr__init_aassertexpr(self, p0, p1, p2, p3);
+parser_prod__AAssertExpr__init_aassertexpr(self, p0, p1, p2, p3); /* Direct call parser_prod#AAssertExpr#init_aassertexpr on <self:Object(AAssertExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAssertExpr#replace_child for (self: AAssertExpr, ANode, nullable ANode) */
@@ -2090,180 +844,225 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : TKwassert */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : nullable TId */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : nullable TId */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : null */;
-val* var13 /* : AExpr */;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
 short int var14 /* : Bool */;
-val* var15 /* : null */;
-short int var16 /* : Bool */;
-short int var17 /* : Bool */;
-int cltype18;
-int idtype19;
-val* var20 /* : nullable AExpr */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
+val* var19 /* : AExpr */;
+short int var20 /* : Bool */;
 short int var21 /* : Bool */;
-val* var22 /* : null */;
 short int var23 /* : Bool */;
-short int var24 /* : Bool */;
-int cltype25;
-int idtype26;
-val* var27 /* : null */;
+short int var25 /* : Bool */;
+short int var26 /* : Bool */;
+int cltype27;
+int idtype28;
+const char* var_class_name29;
+val* var30 /* : nullable AExpr */;
+short int var31 /* : Bool */;
+short int var32 /* : Bool */;
+short int var34 /* : Bool */;
+short int var36 /* : Bool */;
+short int var37 /* : Bool */;
+int cltype38;
+int idtype39;
+const char* var_class_name40;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AAssertExpr___n_kwassert].val; /* _n_kwassert on <self:AAssertExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwassert");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5616);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwassert");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2861);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TKwassert>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:TKwassert> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:TKwassert> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwassert */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa TKwassert */
 cltype = type_parser_nodes__TKwassert.color;
 idtype = type_parser_nodes__TKwassert.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5619);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AAssertExpr___n_kwassert].val = var_new_child; /* _n_kwassert on <self:AAssertExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5622);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TKwassert", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2862);
+show_backtrace(1);
+}
+{
+parser_prod__AAssertExpr__n_kwassert_61d(self, var_new_child); /* Direct call parser_prod#AAssertExpr#n_kwassert= on <self:AAssertExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val; /* _n_id on <self:AAssertExpr> */
-if (var5 == NULL) {
-var6 = 0; /* <var_old_child:ANode> cannot be null */
+var8 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val; /* _n_id on <self:AAssertExpr> */
+if (var8 == NULL) {
+var9 = 0; /* <var_old_child:ANode> cannot be null */
 } else {
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:nullable TId>*/;
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:nullable TId> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:nullable TId(TId)> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TId */
-cltype10 = type_parser_nodes__TId.color;
-idtype11 = type_parser_nodes__TId.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5629);
-exit(1);
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val = var_new_child; /* _n_id on <self:AAssertExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa nullable TId */
+cltype16 = type_nullable_parser_nodes__TId.color;
+idtype17 = type_nullable_parser_nodes__TId.id;
+if(var_new_child == NULL) {
+var15 = 1;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-var12 = NULL;
-self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val = var12; /* _n_id on <self:AAssertExpr> */
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "nullable TId", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2866);
+show_backtrace(1);
+}
+{
+parser_prod__AAssertExpr__n_id_61d(self, var_new_child); /* Direct call parser_prod#AAssertExpr#n_id= on <self:AAssertExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var13 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_expr].val; /* _n_expr on <self:AAssertExpr> */
-if (var13 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5636);
-exit(1);
+var19 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_expr].val; /* _n_expr on <self:AAssertExpr> */
+if (unlikely(var19 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2869);
+show_backtrace(1);
 }
-var14 = ((short int (*)(val*, val*))(var13->class->vft[COLOR_kernel__Object___61d_61d]))(var13, var_old_child) /* == on <var13:AExpr>*/;
-if (var14){
-var15 = NULL;
-if (var_new_child == NULL) {
-var16 = 0; /* is null */
-} else {
-var16 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var19,var_old_child) on <var19:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var19,var_other) on <var19:AExpr> */
+var25 = var19 == var_other;
+var23 = var25;
+goto RET_LABEL24;
+RET_LABEL24:(void)0;
 }
-if (var16){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype18 = type_parser_nodes__AExpr.color;
-idtype19 = type_parser_nodes__AExpr.id;
-if(cltype18 >= var_new_child->type->table_size) {
-var17 = 0;
-} else {
-var17 = var_new_child->type->type_table[cltype18] == idtype19;
 }
-if (!var17) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5639);
-exit(1);
+var21 = var23;
+goto RET_LABEL22;
+RET_LABEL22:(void)0;
+}
+var20 = var21;
 }
-self->attrs[COLOR_parser_nodes__AAssertExpr___n_expr].val = var_new_child; /* _n_expr on <self:AAssertExpr> */
+if (var20){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype27 = type_parser_nodes__AExpr.color;
+idtype28 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var26 = 0;
+} else {
+if(cltype27 >= var_new_child->type->table_size) {
+var26 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5642);
-exit(1);
+var26 = var_new_child->type->type_table[cltype27] == idtype28;
+}
+}
+if (unlikely(!var26)) {
+var_class_name29 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name29);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2870);
+show_backtrace(1);
+}
+{
+parser_prod__AAssertExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AAssertExpr#n_expr= on <self:AAssertExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var20 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val; /* _n_else on <self:AAssertExpr> */
-if (var20 == NULL) {
-var21 = 0; /* <var_old_child:ANode> cannot be null */
+var30 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val; /* _n_else on <self:AAssertExpr> */
+if (var30 == NULL) {
+var31 = 0; /* <var_old_child:ANode> cannot be null */
 } else {
-var21 = ((short int (*)(val*, val*))(var20->class->vft[COLOR_kernel__Object___61d_61d]))(var20, var_old_child) /* == on <var20:nullable AExpr>*/;
+{ /* Inline kernel#Object#== (var30,var_old_child) on <var30:nullable AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var30,var_other) on <var30:nullable AExpr(AExpr)> */
+var36 = var30 == var_other;
+var34 = var36;
+goto RET_LABEL35;
+RET_LABEL35:(void)0;
 }
-if (var21){
-var22 = NULL;
-if (var_new_child == NULL) {
-var23 = 0; /* is null */
-} else {
-var23 = 1; /* arg is null and recv is not */
 }
-if (var23){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype25 = type_parser_nodes__AExpr.color;
-idtype26 = type_parser_nodes__AExpr.id;
-if(cltype25 >= var_new_child->type->table_size) {
-var24 = 0;
-} else {
-var24 = var_new_child->type->type_table[cltype25] == idtype26;
+var32 = var34;
+goto RET_LABEL33;
+RET_LABEL33:(void)0;
 }
-if (!var24) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5649);
-exit(1);
+var31 = var32;
 }
-self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val = var_new_child; /* _n_else on <self:AAssertExpr> */
+if (var31){
+/* <var_new_child:nullable ANode> isa nullable AExpr */
+cltype38 = type_nullable_parser_nodes__AExpr.color;
+idtype39 = type_nullable_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var37 = 1;
+} else {
+if(cltype38 >= var_new_child->type->table_size) {
+var37 = 0;
 } else {
-var27 = NULL;
-self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val = var27; /* _n_else on <self:AAssertExpr> */
+var37 = var_new_child->type->type_table[cltype38] == idtype39;
+}
+}
+if (unlikely(!var37)) {
+var_class_name40 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "nullable AExpr", var_class_name40);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2874);
+show_backtrace(1);
+}
+{
+parser_prod__AAssertExpr__n_else_61d(self, var_new_child); /* Direct call parser_prod#AAssertExpr#n_else= on <self:AAssertExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -2272,7 +1071,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AAssertExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AAssertExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AAssertExpr__replace_child(self, p0, p1);
+parser_prod__AAssertExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AAssertExpr#replace_child on <self:Object(AAssertExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAssertExpr#n_kwassert= for (self: AAssertExpr, TKwassert) */
@@ -2280,12 +1079,17 @@ void parser_prod__AAssertExpr__n_kwassert_61d(val* self, val* p0) {
 val* var_node /* var node: TKwassert */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAssertExpr___n_kwassert].val = var_node; /* _n_kwassert on <self:AAssertExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwassert>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TKwassert> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TKwassert> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAssertExpr#n_kwassert= for (self: Object, TKwassert) */
 void VIRTUAL_parser_prod__AAssertExpr__n_kwassert_61d(val* self, val* p0) {
-parser_prod__AAssertExpr__n_kwassert_61d(self, p0);
+parser_prod__AAssertExpr__n_kwassert_61d(self, p0); /* Direct call parser_prod#AAssertExpr#n_kwassert= on <self:Object(AAssertExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAssertExpr#n_id= for (self: AAssertExpr, nullable TId) */
@@ -2293,672 +1097,404 @@ void parser_prod__AAssertExpr__n_id_61d(val* self, val* p0) {
 val* var_node /* var node: nullable TId */;
 val* var /* : null */;
 short int var1 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var4 /* : Bool */;
+short int var5 /* : Bool */;
+short int var6 /* : Bool */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val = var_node; /* _n_id on <self:AAssertExpr> */
 var = NULL;
 if (var_node == NULL) {
 var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable TId(TId)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#n_id= for (self: Object, nullable TId) */
-void VIRTUAL_parser_prod__AAssertExpr__n_id_61d(val* self, val* p0) {
-parser_prod__AAssertExpr__n_id_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#n_expr= for (self: AAssertExpr, AExpr) */
-void parser_prod__AAssertExpr__n_expr_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AAssertExpr___n_expr].val = var_node; /* _n_expr on <self:AAssertExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AAssertExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AAssertExpr__n_expr_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#n_else= for (self: AAssertExpr, nullable AExpr) */
-void parser_prod__AAssertExpr__n_else_61d(val* self, val* p0) {
-val* var_node /* var node: nullable AExpr */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val = var_node; /* _n_else on <self:AAssertExpr> */
-var = NULL;
-if (var_node == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable AExpr(AExpr)>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#n_else= for (self: Object, nullable AExpr) */
-void VIRTUAL_parser_prod__AAssertExpr__n_else_61d(val* self, val* p0) {
-parser_prod__AAssertExpr__n_else_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#visit_all for (self: AAssertExpr, Visitor) */
-void parser_prod__AAssertExpr__visit_all(val* self, val* p0) {
-val* var_v /* var v: Visitor */;
-val* var /* : TKwassert */;
-val* var1 /* : nullable TId */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-val* var4 /* : nullable TId */;
-val* var5 /* : AExpr */;
-val* var6 /* : nullable AExpr */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
-val* var9 /* : nullable AExpr */;
-var_v = p0;
-var = self->attrs[COLOR_parser_nodes__AAssertExpr___n_kwassert].val; /* _n_kwassert on <self:AAssertExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwassert");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5686);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val; /* _n_id on <self:AAssertExpr> */
-var2 = NULL;
-if (var1 == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-var4 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val; /* _n_id on <self:AAssertExpr> */
-if (var4 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5688);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var4) /* enter_visit on <var_v:Visitor>*/;
-} else {
-}
-var5 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_expr].val; /* _n_expr on <self:AAssertExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5690);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var5) /* enter_visit on <var_v:Visitor>*/;
-var6 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val; /* _n_else on <self:AAssertExpr> */
-var7 = NULL;
-if (var6 == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
-}
-if (var8){
-var9 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val; /* _n_else on <self:AAssertExpr> */
-if (var9 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5692);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var9) /* enter_visit on <var_v:Visitor>*/;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AAssertExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__AAssertExpr__visit_all(val* self, val* p0) {
-parser_prod__AAssertExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#empty_init for (self: AOnceExpr) */
-void parser_prod__AOnceExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AOnceExpr__empty_init(val* self) {
-parser_prod__AOnceExpr__empty_init(self);
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#init_aonceexpr for (self: AOnceExpr, nullable TKwonce, nullable AExpr) */
-void parser_prod__AOnceExpr__init_aonceexpr(val* self, val* p0, val* p1) {
-val* var_n_kwonce /* var n_kwonce: nullable TKwonce */;
-val* var_n_expr /* var n_expr: nullable AExpr */;
-var_n_kwonce = p0;
-var_n_expr = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AOnceExpr__empty_init]))(self) /* empty_init on <self:AOnceExpr>*/;
-if (var_n_kwonce == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5705);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val = var_n_kwonce; /* _n_kwonce on <self:AOnceExpr> */
-if (var_n_kwonce == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5706);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_kwonce->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwonce, self) /* parent= on <var_n_kwonce:nullable TKwonce>*/;
-}
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5707);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AProxyExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AOnceExpr> */
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5708);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
-}
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#init_aonceexpr for (self: Object, nullable TKwonce, nullable AExpr) */
-void VIRTUAL_parser_prod__AOnceExpr__init_aonceexpr(val* self, val* p0, val* p1) {
-parser_prod__AOnceExpr__init_aonceexpr(self, p0, p1);
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#replace_child for (self: AOnceExpr, ANode, nullable ANode) */
-void parser_prod__AOnceExpr__replace_child(val* self, val* p0, val* p1) {
-val* var_old_child /* var old_child: ANode */;
-val* var_new_child /* var new_child: nullable ANode */;
-val* var /* : TKwonce */;
-short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-var_old_child = p0;
-var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val; /* _n_kwonce on <self:AOnceExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwonce");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5713);
-exit(1);
-}
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TKwonce>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwonce */
-cltype = type_parser_nodes__TKwonce.color;
-idtype = type_parser_nodes__TKwonce.id;
-if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5716);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val = var_new_child; /* _n_kwonce on <self:AOnceExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5719);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var5 = self->attrs[COLOR_parser_nodes__AProxyExpr___n_expr].val; /* _n_expr on <self:AOnceExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5723);
-exit(1);
-}
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
-}
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5726);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__AProxyExpr___n_expr].val = var_new_child; /* _n_expr on <self:AOnceExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5729);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__AOnceExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AOnceExpr__replace_child(self, p0, p1);
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#n_kwonce= for (self: AOnceExpr, TKwonce) */
-void parser_prod__AOnceExpr__n_kwonce_61d(val* self, val* p0) {
-val* var_node /* var node: TKwonce */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val = var_node; /* _n_kwonce on <self:AOnceExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwonce>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#n_kwonce= for (self: Object, TKwonce) */
-void VIRTUAL_parser_prod__AOnceExpr__n_kwonce_61d(val* self, val* p0) {
-parser_prod__AOnceExpr__n_kwonce_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AOnceExpr#n_expr= for (self: AOnceExpr, AExpr) */
-void parser_prod__AOnceExpr__n_expr_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AProxyExpr___n_expr].val = var_node; /* _n_expr on <self:AOnceExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
-RET_LABEL:;
+} else {
+var1 = 1; /* arg is null and recv is not */
 }
-/* method parser_prod#AOnceExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AOnceExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AOnceExpr__n_expr_61d(self, p0);
-RET_LABEL:;
+if (0) {
+{ /* Inline kernel#Object#!= (var_node,var) on <var_node:nullable TId> */
+var_other = var;
+{
+var5 = ((short int (*)(val*, val*))(var_node->class->vft[COLOR_kernel__Object___61d_61d]))(var_node, var_other) /* == on <var_node:nullable TId(TId)>*/;
+var4 = var5;
 }
-/* method parser_prod#AOnceExpr#visit_all for (self: AOnceExpr, Visitor) */
-void parser_prod__AOnceExpr__visit_all(val* self, val* p0) {
-val* var_v /* var v: Visitor */;
-val* var /* : TKwonce */;
-val* var1 /* : AExpr */;
-var_v = p0;
-var = self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val; /* _n_kwonce on <self:AOnceExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwonce");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5749);
-exit(1);
+var6 = !var4;
+var2 = var6;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__AProxyExpr___n_expr].val; /* _n_expr on <self:AOnceExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5750);
-exit(1);
+var1 = var2;
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
+if (var1){
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:nullable TId(TId)> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:nullable TId(TId)> */
+RET_LABEL7:(void)0;
 }
-/* method parser_prod#AOnceExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__AOnceExpr__visit_all(val* self, val* p0) {
-parser_prod__AOnceExpr__visit_all(self, p0);
-RET_LABEL:;
 }
-/* method parser_prod#ASendExpr#empty_init for (self: ASendExpr) */
-void parser_prod__ASendExpr__empty_init(val* self) {
+} else {
+}
 RET_LABEL:;
 }
-/* method parser_prod#ASendExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ASendExpr__empty_init(val* self) {
-parser_prod__ASendExpr__empty_init(self);
+/* method parser_prod#AAssertExpr#n_id= for (self: Object, nullable TId) */
+void VIRTUAL_parser_prod__AAssertExpr__n_id_61d(val* self, val* p0) {
+parser_prod__AAssertExpr__n_id_61d(self, p0); /* Direct call parser_prod#AAssertExpr#n_id= on <self:Object(AAssertExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ASendExpr#init_asendexpr for (self: ASendExpr, nullable AExpr) */
-void parser_prod__ASendExpr__init_asendexpr(val* self, val* p0) {
-val* var_n_expr /* var n_expr: nullable AExpr */;
-var_n_expr = p0;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ASendExpr__empty_init]))(self) /* empty_init on <self:ASendExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5761);
-exit(1);
+/* method parser_prod#AAssertExpr#n_expr= for (self: AAssertExpr, AExpr) */
+void parser_prod__AAssertExpr__n_expr_61d(val* self, val* p0) {
+val* var_node /* var node: AExpr */;
+var_node = p0;
+self->attrs[COLOR_parser_nodes__AAssertExpr___n_expr].val = var_node; /* _n_expr on <self:AAssertExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ASendExpr> */
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5762);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
 }
 RET_LABEL:;
 }
-/* method parser_prod#ASendExpr#init_asendexpr for (self: Object, nullable AExpr) */
-void VIRTUAL_parser_prod__ASendExpr__init_asendexpr(val* self, val* p0) {
-parser_prod__ASendExpr__init_asendexpr(self, p0);
+/* method parser_prod#AAssertExpr#n_expr= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AAssertExpr__n_expr_61d(val* self, val* p0) {
+parser_prod__AAssertExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AAssertExpr#n_expr= on <self:Object(AAssertExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ASendExpr#replace_child for (self: ASendExpr, ANode, nullable ANode) */
-void parser_prod__ASendExpr__replace_child(val* self, val* p0, val* p1) {
-val* var_old_child /* var old_child: ANode */;
-val* var_new_child /* var new_child: nullable ANode */;
-val* var /* : AExpr */;
+/* method parser_prod#AAssertExpr#n_else= for (self: AAssertExpr, nullable AExpr) */
+void parser_prod__AAssertExpr__n_else_61d(val* self, val* p0) {
+val* var_node /* var node: nullable AExpr */;
+val* var /* : null */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
-int cltype;
-int idtype;
-var_old_child = p0;
-var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ASendExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5767);
-exit(1);
-}
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
+short int var5 /* : Bool */;
+short int var6 /* : Bool */;
+var_node = p0;
+self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val = var_node; /* _n_else on <self:AAssertExpr> */
+var = NULL;
+if (var_node == NULL) {
+var1 = 0; /* is null */
 } else {
-var3 = 1; /* arg is null and recv is not */
+var1 = 1; /* arg is null and recv is not */
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype = type_parser_nodes__AExpr.color;
-idtype = type_parser_nodes__AExpr.id;
-if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+if (0) {
+{ /* Inline kernel#Object#!= (var_node,var) on <var_node:nullable AExpr> */
+var_other = var;
+{
+var5 = ((short int (*)(val*, val*))(var_node->class->vft[COLOR_kernel__Object___61d_61d]))(var_node, var_other) /* == on <var_node:nullable AExpr(AExpr)>*/;
+var4 = var5;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5770);
-exit(1);
+var6 = !var4;
+var2 = var6;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ASendExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5773);
-exit(1);
+var1 = var2;
 }
-goto RET_LABEL;
-} else {
+if (var1){
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:nullable AExpr(AExpr)> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:nullable AExpr(AExpr)> */
+RET_LABEL7:(void)0;
 }
-RET_LABEL:;
 }
-/* method parser_prod#ASendExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__ASendExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ASendExpr__replace_child(self, p0, p1);
-RET_LABEL:;
+} else {
 }
-/* method parser_prod#ASendExpr#n_expr= for (self: ASendExpr, AExpr) */
-void parser_prod__ASendExpr__n_expr_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ASendExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
 RET_LABEL:;
 }
-/* method parser_prod#ASendExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__ASendExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ASendExpr__n_expr_61d(self, p0);
+/* method parser_prod#AAssertExpr#n_else= for (self: Object, nullable AExpr) */
+void VIRTUAL_parser_prod__AAssertExpr__n_else_61d(val* self, val* p0) {
+parser_prod__AAssertExpr__n_else_61d(self, p0); /* Direct call parser_prod#AAssertExpr#n_else= on <self:Object(AAssertExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ASendExpr#visit_all for (self: ASendExpr, Visitor) */
-void parser_prod__ASendExpr__visit_all(val* self, val* p0) {
+/* method parser_prod#AAssertExpr#visit_all for (self: AAssertExpr, Visitor) */
+void parser_prod__AAssertExpr__visit_all(val* self, val* p0) {
 val* var_v /* var v: Visitor */;
-val* var /* : AExpr */;
+val* var /* : TKwassert */;
+val* var1 /* : nullable TId */;
+val* var2 /* : AExpr */;
+val* var3 /* : nullable AExpr */;
 var_v = p0;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ASendExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5788);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__AAssertExpr___n_kwassert].val; /* _n_kwassert on <self:AAssertExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwassert");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2903);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#ASendExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__ASendExpr__visit_all(val* self, val* p0) {
-parser_prod__ASendExpr__visit_all(self, p0);
-RET_LABEL:;
+var1 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_id].val; /* _n_id on <self:AAssertExpr> */
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
+}
+var2 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_expr].val; /* _n_expr on <self:AAssertExpr> */
+if (unlikely(var2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2905);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var2); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
+}
+var3 = self->attrs[COLOR_parser_nodes__AAssertExpr___n_else].val; /* _n_else on <self:AAssertExpr> */
+{
+parser_nodes__Visitor__enter_visit(var_v, var3); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#ABinopExpr#empty_init for (self: ABinopExpr) */
-void parser_prod__ABinopExpr__empty_init(val* self) {
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ABinopExpr__empty_init(val* self) {
-parser_prod__ABinopExpr__empty_init(self);
+/* method parser_prod#AAssertExpr#visit_all for (self: Object, Visitor) */
+void VIRTUAL_parser_prod__AAssertExpr__visit_all(val* self, val* p0) {
+parser_prod__AAssertExpr__visit_all(self, p0); /* Direct call parser_prod#AAssertExpr#visit_all on <self:Object(AAssertExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#init_abinopexpr for (self: ABinopExpr, nullable AExpr, nullable AExpr) */
-void parser_prod__ABinopExpr__init_abinopexpr(val* self, val* p0, val* p1) {
+/* method parser_prod#AOnceExpr#init_aonceexpr for (self: AOnceExpr, nullable TKwonce, nullable AExpr) */
+void parser_prod__AOnceExpr__init_aonceexpr(val* self, val* p0, val* p1) {
+val* var_n_kwonce /* var n_kwonce: nullable TKwonce */;
 val* var_n_expr /* var n_expr: nullable AExpr */;
-val* var_n_expr2 /* var n_expr2: nullable AExpr */;
-var_n_expr = p0;
-var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ABinopExpr__empty_init]))(self) /* empty_init on <self:ABinopExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5800);
-exit(1);
+var_n_kwonce = p0;
+var_n_expr = p1;
+if (unlikely(var_n_kwonce == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2915);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ABinopExpr> */
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5801);
-exit(1);
+self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val = var_n_kwonce; /* _n_kwonce on <self:AOnceExpr> */
+if (var_n_kwonce == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2916);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_kwonce,self) on <var_n_kwonce:nullable TKwonce> */
+if (unlikely(var_n_kwonce == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5802);
-exit(1);
+var_n_kwonce->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_kwonce:nullable TKwonce> */
+RET_LABEL1:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:ABinopExpr> */
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5803);
-exit(1);
+}
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2917);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__AOnceExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AOnceExpr> */
+if (var_n_expr == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2918);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#init_abinopexpr for (self: Object, nullable AExpr, nullable AExpr) */
-void VIRTUAL_parser_prod__ABinopExpr__init_abinopexpr(val* self, val* p0, val* p1) {
-parser_prod__ABinopExpr__init_abinopexpr(self, p0, p1);
+/* method parser_prod#AOnceExpr#init_aonceexpr for (self: Object, nullable TKwonce, nullable AExpr) */
+void VIRTUAL_parser_prod__AOnceExpr__init_aonceexpr(val* self, val* p0, val* p1) {
+parser_prod__AOnceExpr__init_aonceexpr(self, p0, p1); /* Direct call parser_prod#AOnceExpr#init_aonceexpr on <self:Object(AOnceExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#replace_child for (self: ABinopExpr, ANode, nullable ANode) */
-void parser_prod__ABinopExpr__replace_child(val* self, val* p0, val* p1) {
+/* method parser_prod#AOnceExpr#replace_child for (self: AOnceExpr, ANode, nullable ANode) */
+void parser_prod__AOnceExpr__replace_child(val* self, val* p0, val* p1) {
 val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
-val* var /* : AExpr */;
+val* var /* : TKwonce */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ABinopExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5808);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val; /* _n_kwonce on <self:AOnceExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwonce");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2923);
+show_backtrace(1);
+}
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:TKwonce> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:TKwonce> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
+}
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
 if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
+/* <var_new_child:nullable ANode> isa TKwonce */
+cltype = type_parser_nodes__TKwonce.color;
+idtype = type_parser_nodes__TKwonce.id;
+if(var_new_child == NULL) {
+var7 = 0;
 } else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype = type_parser_nodes__AExpr.color;
-idtype = type_parser_nodes__AExpr.id;
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5811);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ABinopExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5814);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TKwonce", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2924);
+show_backtrace(1);
+}
+{
+parser_prod__AOnceExpr__n_kwonce_61d(self, var_new_child); /* Direct call parser_prod#AOnceExpr#n_kwonce= on <self:AOnceExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ABinopExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5818);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AOnceExpr___n_expr].val; /* _n_expr on <self:AOnceExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2927);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5821);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:ABinopExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5824);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2928);
+show_backtrace(1);
+}
+{
+parser_prod__AOnceExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AOnceExpr#n_expr= on <self:AOnceExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__ABinopExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ABinopExpr__replace_child(self, p0, p1);
+/* method parser_prod#AOnceExpr#replace_child for (self: Object, ANode, nullable ANode) */
+void VIRTUAL_parser_prod__AOnceExpr__replace_child(val* self, val* p0, val* p1) {
+parser_prod__AOnceExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AOnceExpr#replace_child on <self:Object(AOnceExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#n_expr= for (self: ABinopExpr, AExpr) */
-void parser_prod__ABinopExpr__n_expr_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
+/* method parser_prod#AOnceExpr#n_kwonce= for (self: AOnceExpr, TKwonce) */
+void parser_prod__AOnceExpr__n_kwonce_61d(val* self, val* p0) {
+val* var_node /* var node: TKwonce */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ABinopExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val = var_node; /* _n_kwonce on <self:AOnceExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TKwonce> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TKwonce> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__ABinopExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ABinopExpr__n_expr_61d(self, p0);
+/* method parser_prod#AOnceExpr#n_kwonce= for (self: Object, TKwonce) */
+void VIRTUAL_parser_prod__AOnceExpr__n_kwonce_61d(val* self, val* p0) {
+parser_prod__AOnceExpr__n_kwonce_61d(self, p0); /* Direct call parser_prod#AOnceExpr#n_kwonce= on <self:Object(AOnceExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#n_expr2= for (self: ABinopExpr, AExpr) */
-void parser_prod__ABinopExpr__n_expr2_61d(val* self, val* p0) {
+/* method parser_prod#AOnceExpr#n_expr= for (self: AOnceExpr, AExpr) */
+void parser_prod__AOnceExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:ABinopExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__AOnceExpr___n_expr].val = var_node; /* _n_expr on <self:AOnceExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#n_expr2= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__ABinopExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__ABinopExpr__n_expr2_61d(self, p0);
+/* method parser_prod#AOnceExpr#n_expr= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AOnceExpr__n_expr_61d(val* self, val* p0) {
+parser_prod__AOnceExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AOnceExpr#n_expr= on <self:Object(AOnceExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ABinopExpr#visit_all for (self: ABinopExpr, Visitor) */
-void parser_prod__ABinopExpr__visit_all(val* self, val* p0) {
+/* method parser_prod#AOnceExpr#visit_all for (self: AOnceExpr, Visitor) */
+void parser_prod__AOnceExpr__visit_all(val* self, val* p0) {
 val* var_v /* var v: Visitor */;
-val* var /* : AExpr */;
+val* var /* : TKwonce */;
 val* var1 /* : AExpr */;
 var_v = p0;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ABinopExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5844);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__AOnceExpr___n_kwonce].val; /* _n_kwonce on <self:AOnceExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwonce");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2947);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ABinopExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5845);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
+var1 = self->attrs[COLOR_parser_nodes__AOnceExpr___n_expr].val; /* _n_expr on <self:AOnceExpr> */
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 2948);
+show_backtrace(1);
 }
-/* method parser_prod#ABinopExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__ABinopExpr__visit_all(val* self, val* p0) {
-parser_prod__ABinopExpr__visit_all(self, p0);
-RET_LABEL:;
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#AOrExpr#empty_init for (self: AOrExpr) */
-void parser_prod__AOrExpr__empty_init(val* self) {
 RET_LABEL:;
 }
-/* method parser_prod#AOrExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AOrExpr__empty_init(val* self) {
-parser_prod__AOrExpr__empty_init(self);
+/* method parser_prod#AOnceExpr#visit_all for (self: Object, Visitor) */
+void VIRTUAL_parser_prod__AOnceExpr__visit_all(val* self, val* p0) {
+parser_prod__AOnceExpr__visit_all(self, p0); /* Direct call parser_prod#AOnceExpr#visit_all on <self:Object(AOnceExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#init_aorexpr for (self: AOrExpr, nullable AExpr, nullable AExpr) */
@@ -2967,38 +1503,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AOrExpr__empty_init]))(self) /* empty_init on <self:AOrExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5857);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3028);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AOrExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AOrExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5858);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3029);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5859);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3030);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AOrExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AOrExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5860);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3031);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#init_aorexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AOrExpr__init_aorexpr(val* self, val* p0, val* p1) {
-parser_prod__AOrExpr__init_aorexpr(self, p0, p1);
+parser_prod__AOrExpr__init_aorexpr(self, p0, p1); /* Direct call parser_prod#AOrExpr#init_aorexpr on <self:Object(AOrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#replace_child for (self: AOrExpr, ANode, nullable ANode) */
@@ -3007,92 +1558,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AOrExpr___n_expr].val; /* _n_expr on <self:AOrExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5865);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3036);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5868);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AOrExpr___n_expr].val = var_new_child; /* _n_expr on <self:AOrExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5871);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3037);
+show_backtrace(1);
+}
+{
+parser_prod__AOrExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AOrExpr#n_expr= on <self:AOrExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AOrExpr___n_expr2].val; /* _n_expr2 on <self:AOrExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5875);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AOrExpr___n_expr2].val; /* _n_expr2 on <self:AOrExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3040);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5878);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AOrExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AOrExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5881);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3041);
+show_backtrace(1);
+}
+{
+parser_prod__AOrExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AOrExpr#n_expr2= on <self:AOrExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -3101,7 +1677,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AOrExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AOrExpr__replace_child(self, p0, p1);
+parser_prod__AOrExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AOrExpr#replace_child on <self:Object(AOrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#n_expr= for (self: AOrExpr, AExpr) */
@@ -3109,12 +1685,17 @@ void parser_prod__AOrExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AOrExpr___n_expr].val = var_node; /* _n_expr on <self:AOrExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AOrExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AOrExpr__n_expr_61d(self, p0);
+parser_prod__AOrExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AOrExpr#n_expr= on <self:Object(AOrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#n_expr2= for (self: AOrExpr, AExpr) */
@@ -3122,12 +1703,17 @@ void parser_prod__AOrExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AOrExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AOrExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AOrExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AOrExpr__n_expr2_61d(self, p0);
+parser_prod__AOrExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AOrExpr#n_expr2= on <self:Object(AOrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#visit_all for (self: AOrExpr, Visitor) */
@@ -3137,33 +1723,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AOrExpr___n_expr].val; /* _n_expr on <self:AOrExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5901);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3060);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__AOrExpr___n_expr2].val; /* _n_expr2 on <self:AOrExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5902);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3061);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AOrExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AOrExpr__visit_all(val* self, val* p0) {
-parser_prod__AOrExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAndExpr#empty_init for (self: AAndExpr) */
-void parser_prod__AAndExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AAndExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AAndExpr__empty_init(val* self) {
-parser_prod__AAndExpr__empty_init(self);
+parser_prod__AOrExpr__visit_all(self, p0); /* Direct call parser_prod#AOrExpr#visit_all on <self:Object(AOrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#init_aandexpr for (self: AAndExpr, nullable AExpr, nullable AExpr) */
@@ -3172,38 +1753,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AAndExpr__empty_init]))(self) /* empty_init on <self:AAndExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5914);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3070);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAndExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AAndExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5915);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3071);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5916);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3072);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAndExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AAndExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5917);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3073);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#init_aandexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AAndExpr__init_aandexpr(val* self, val* p0, val* p1) {
-parser_prod__AAndExpr__init_aandexpr(self, p0, p1);
+parser_prod__AAndExpr__init_aandexpr(self, p0, p1); /* Direct call parser_prod#AAndExpr#init_aandexpr on <self:Object(AAndExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#replace_child for (self: AAndExpr, ANode, nullable ANode) */
@@ -3212,92 +1808,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AAndExpr___n_expr].val; /* _n_expr on <self:AAndExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5922);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3078);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5925);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AAndExpr___n_expr].val = var_new_child; /* _n_expr on <self:AAndExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5928);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3079);
+show_backtrace(1);
+}
+{
+parser_prod__AAndExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AAndExpr#n_expr= on <self:AAndExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AAndExpr___n_expr2].val; /* _n_expr2 on <self:AAndExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5932);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AAndExpr___n_expr2].val; /* _n_expr2 on <self:AAndExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3082);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5935);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__AAndExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AAndExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5938);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3083);
+show_backtrace(1);
+}
+{
+parser_prod__AAndExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AAndExpr#n_expr2= on <self:AAndExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -3306,7 +1927,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AAndExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AAndExpr__replace_child(self, p0, p1);
+parser_prod__AAndExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AAndExpr#replace_child on <self:Object(AAndExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#n_expr= for (self: AAndExpr, AExpr) */
@@ -3314,12 +1935,17 @@ void parser_prod__AAndExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAndExpr___n_expr].val = var_node; /* _n_expr on <self:AAndExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AAndExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AAndExpr__n_expr_61d(self, p0);
+parser_prod__AAndExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AAndExpr#n_expr= on <self:Object(AAndExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#n_expr2= for (self: AAndExpr, AExpr) */
@@ -3327,12 +1953,17 @@ void parser_prod__AAndExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAndExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AAndExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AAndExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AAndExpr__n_expr2_61d(self, p0);
+parser_prod__AAndExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AAndExpr#n_expr2= on <self:Object(AAndExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#visit_all for (self: AAndExpr, Visitor) */
@@ -3342,33 +1973,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AAndExpr___n_expr].val; /* _n_expr on <self:AAndExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5958);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3102);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__AAndExpr___n_expr2].val; /* _n_expr2 on <self:AAndExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5959);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3103);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AAndExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AAndExpr__visit_all(val* self, val* p0) {
-parser_prod__AAndExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AOrElseExpr#empty_init for (self: AOrElseExpr) */
-void parser_prod__AOrElseExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AOrElseExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AOrElseExpr__empty_init(val* self) {
-parser_prod__AOrElseExpr__empty_init(self);
+parser_prod__AAndExpr__visit_all(self, p0); /* Direct call parser_prod#AAndExpr#visit_all on <self:Object(AAndExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#init_aorelseexpr for (self: AOrElseExpr, nullable AExpr, nullable AExpr) */
@@ -3377,38 +2003,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AOrElseExpr__empty_init]))(self) /* empty_init on <self:AOrElseExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5971);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3112);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AOrElseExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5972);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3113);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5973);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3114);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AOrElseExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5974);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3115);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#init_aorelseexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AOrElseExpr__init_aorelseexpr(val* self, val* p0, val* p1) {
-parser_prod__AOrElseExpr__init_aorelseexpr(self, p0, p1);
+parser_prod__AOrElseExpr__init_aorelseexpr(self, p0, p1); /* Direct call parser_prod#AOrElseExpr#init_aorelseexpr on <self:Object(AOrElseExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#replace_child for (self: AOrElseExpr, ANode, nullable ANode) */
@@ -3417,92 +2058,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr].val; /* _n_expr on <self:AOrElseExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5979);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3120);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5982);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr].val = var_new_child; /* _n_expr on <self:AOrElseExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5985);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3121);
+show_backtrace(1);
+}
+{
+parser_prod__AOrElseExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AOrElseExpr#n_expr= on <self:AOrElseExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr2].val; /* _n_expr2 on <self:AOrElseExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5989);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr2].val; /* _n_expr2 on <self:AOrElseExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3124);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5992);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AOrElseExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 5995);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3125);
+show_backtrace(1);
+}
+{
+parser_prod__AOrElseExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AOrElseExpr#n_expr2= on <self:AOrElseExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -3511,7 +2177,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AOrElseExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AOrElseExpr__replace_child(self, p0, p1);
+parser_prod__AOrElseExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AOrElseExpr#replace_child on <self:Object(AOrElseExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#n_expr= for (self: AOrElseExpr, AExpr) */
@@ -3519,12 +2185,17 @@ void parser_prod__AOrElseExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr].val = var_node; /* _n_expr on <self:AOrElseExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AOrElseExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AOrElseExpr__n_expr_61d(self, p0);
+parser_prod__AOrElseExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AOrElseExpr#n_expr= on <self:Object(AOrElseExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#n_expr2= for (self: AOrElseExpr, AExpr) */
@@ -3532,12 +2203,17 @@ void parser_prod__AOrElseExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AOrElseExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AOrElseExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AOrElseExpr__n_expr2_61d(self, p0);
+parser_prod__AOrElseExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AOrElseExpr#n_expr2= on <self:Object(AOrElseExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#visit_all for (self: AOrElseExpr, Visitor) */
@@ -3547,33 +2223,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr].val; /* _n_expr on <self:AOrElseExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6015);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3144);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__AOrElseExpr___n_expr2].val; /* _n_expr2 on <self:AOrElseExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6016);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3145);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AOrElseExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AOrElseExpr__visit_all(val* self, val* p0) {
-parser_prod__AOrElseExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AImpliesExpr#empty_init for (self: AImpliesExpr) */
-void parser_prod__AImpliesExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AImpliesExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AImpliesExpr__empty_init(val* self) {
-parser_prod__AImpliesExpr__empty_init(self);
+parser_prod__AOrElseExpr__visit_all(self, p0); /* Direct call parser_prod#AOrElseExpr#visit_all on <self:Object(AOrElseExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#init_aimpliesexpr for (self: AImpliesExpr, nullable AExpr, nullable AExpr) */
@@ -3582,38 +2253,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AImpliesExpr__empty_init]))(self) /* empty_init on <self:AImpliesExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6028);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3154);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AImpliesExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6029);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3155);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6030);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3156);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AImpliesExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6031);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3157);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#init_aimpliesexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AImpliesExpr__init_aimpliesexpr(val* self, val* p0, val* p1) {
-parser_prod__AImpliesExpr__init_aimpliesexpr(self, p0, p1);
+parser_prod__AImpliesExpr__init_aimpliesexpr(self, p0, p1); /* Direct call parser_prod#AImpliesExpr#init_aimpliesexpr on <self:Object(AImpliesExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#replace_child for (self: AImpliesExpr, ANode, nullable ANode) */
@@ -3622,92 +2308,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr].val; /* _n_expr on <self:AImpliesExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6036);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3162);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6039);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr].val = var_new_child; /* _n_expr on <self:AImpliesExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6042);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3163);
+show_backtrace(1);
+}
+{
+parser_prod__AImpliesExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AImpliesExpr#n_expr= on <self:AImpliesExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr2].val; /* _n_expr2 on <self:AImpliesExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6046);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr2].val; /* _n_expr2 on <self:AImpliesExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3166);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6049);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AImpliesExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6052);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3167);
+show_backtrace(1);
+}
+{
+parser_prod__AImpliesExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AImpliesExpr#n_expr2= on <self:AImpliesExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -3716,7 +2427,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AImpliesExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AImpliesExpr__replace_child(self, p0, p1);
+parser_prod__AImpliesExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AImpliesExpr#replace_child on <self:Object(AImpliesExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#n_expr= for (self: AImpliesExpr, AExpr) */
@@ -3724,12 +2435,17 @@ void parser_prod__AImpliesExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr].val = var_node; /* _n_expr on <self:AImpliesExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AImpliesExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AImpliesExpr__n_expr_61d(self, p0);
+parser_prod__AImpliesExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AImpliesExpr#n_expr= on <self:Object(AImpliesExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#n_expr2= for (self: AImpliesExpr, AExpr) */
@@ -3737,12 +2453,17 @@ void parser_prod__AImpliesExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AImpliesExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AImpliesExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AImpliesExpr__n_expr2_61d(self, p0);
+parser_prod__AImpliesExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AImpliesExpr#n_expr2= on <self:Object(AImpliesExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#visit_all for (self: AImpliesExpr, Visitor) */
@@ -3752,33 +2473,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr].val; /* _n_expr on <self:AImpliesExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6072);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3186);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__AImpliesExpr___n_expr2].val; /* _n_expr2 on <self:AImpliesExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6073);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3187);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AImpliesExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AImpliesExpr__visit_all(val* self, val* p0) {
-parser_prod__AImpliesExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ANotExpr#empty_init for (self: ANotExpr) */
-void parser_prod__ANotExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#ANotExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ANotExpr__empty_init(val* self) {
-parser_prod__ANotExpr__empty_init(self);
+parser_prod__AImpliesExpr__visit_all(self, p0); /* Direct call parser_prod#AImpliesExpr#visit_all on <self:Object(AImpliesExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#init_anotexpr for (self: ANotExpr, nullable TKwnot, nullable AExpr) */
@@ -3787,38 +2503,53 @@ val* var_n_kwnot /* var n_kwnot: nullable TKwnot */;
 val* var_n_expr /* var n_expr: nullable AExpr */;
 var_n_kwnot = p0;
 var_n_expr = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ANotExpr__empty_init]))(self) /* empty_init on <self:ANotExpr>*/;
-if (var_n_kwnot == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6085);
-exit(1);
+if (unlikely(var_n_kwnot == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3196);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ANotExpr___n_kwnot].val = var_n_kwnot; /* _n_kwnot on <self:ANotExpr> */
 if (var_n_kwnot == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6086);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3197);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_kwnot->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwnot, self) /* parent= on <var_n_kwnot:nullable TKwnot>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_kwnot,self) on <var_n_kwnot:nullable TKwnot> */
+if (unlikely(var_n_kwnot == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_kwnot->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_kwnot:nullable TKwnot> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6087);
-exit(1);
+}
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3198);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ANotExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ANotExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6088);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3199);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#init_anotexpr for (self: Object, nullable TKwnot, nullable AExpr) */
 void VIRTUAL_parser_prod__ANotExpr__init_anotexpr(val* self, val* p0, val* p1) {
-parser_prod__ANotExpr__init_anotexpr(self, p0, p1);
+parser_prod__ANotExpr__init_anotexpr(self, p0, p1); /* Direct call parser_prod#ANotExpr#init_anotexpr on <self:Object(ANotExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#replace_child for (self: ANotExpr, ANode, nullable ANode) */
@@ -3827,92 +2558,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : TKwnot */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ANotExpr___n_kwnot].val; /* _n_kwnot on <self:ANotExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwnot");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6093);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwnot");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3204);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TKwnot>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:TKwnot> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:TKwnot> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwnot */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa TKwnot */
 cltype = type_parser_nodes__TKwnot.color;
 idtype = type_parser_nodes__TKwnot.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6096);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ANotExpr___n_kwnot].val = var_new_child; /* _n_kwnot on <self:ANotExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6099);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TKwnot", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3205);
+show_backtrace(1);
+}
+{
+parser_prod__ANotExpr__n_kwnot_61d(self, var_new_child); /* Direct call parser_prod#ANotExpr#n_kwnot= on <self:ANotExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ANotExpr___n_expr].val; /* _n_expr on <self:ANotExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6103);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ANotExpr___n_expr].val; /* _n_expr on <self:ANotExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3208);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6106);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ANotExpr___n_expr].val = var_new_child; /* _n_expr on <self:ANotExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6109);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3209);
+show_backtrace(1);
+}
+{
+parser_prod__ANotExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#ANotExpr#n_expr= on <self:ANotExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -3921,7 +2677,7 @@ RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__ANotExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ANotExpr__replace_child(self, p0, p1);
+parser_prod__ANotExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ANotExpr#replace_child on <self:Object(ANotExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#n_kwnot= for (self: ANotExpr, TKwnot) */
@@ -3929,12 +2685,17 @@ void parser_prod__ANotExpr__n_kwnot_61d(val* self, val* p0) {
 val* var_node /* var node: TKwnot */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ANotExpr___n_kwnot].val = var_node; /* _n_kwnot on <self:ANotExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwnot>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TKwnot> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TKwnot> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#n_kwnot= for (self: Object, TKwnot) */
 void VIRTUAL_parser_prod__ANotExpr__n_kwnot_61d(val* self, val* p0) {
-parser_prod__ANotExpr__n_kwnot_61d(self, p0);
+parser_prod__ANotExpr__n_kwnot_61d(self, p0); /* Direct call parser_prod#ANotExpr#n_kwnot= on <self:Object(ANotExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#n_expr= for (self: ANotExpr, AExpr) */
@@ -3942,12 +2703,17 @@ void parser_prod__ANotExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ANotExpr___n_expr].val = var_node; /* _n_expr on <self:ANotExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ANotExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ANotExpr__n_expr_61d(self, p0);
+parser_prod__ANotExpr__n_expr_61d(self, p0); /* Direct call parser_prod#ANotExpr#n_expr= on <self:Object(ANotExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#visit_all for (self: ANotExpr, Visitor) */
@@ -3957,33 +2723,28 @@ val* var /* : TKwnot */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ANotExpr___n_kwnot].val; /* _n_kwnot on <self:ANotExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwnot");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6129);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwnot");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3228);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ANotExpr___n_expr].val; /* _n_expr on <self:ANotExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6130);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3229);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#ANotExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__ANotExpr__visit_all(val* self, val* p0) {
-parser_prod__ANotExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AEqExpr#empty_init for (self: AEqExpr) */
-void parser_prod__AEqExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AEqExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AEqExpr__empty_init(val* self) {
-parser_prod__AEqExpr__empty_init(self);
+parser_prod__ANotExpr__visit_all(self, p0); /* Direct call parser_prod#ANotExpr#visit_all on <self:Object(ANotExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#init_aeqexpr for (self: AEqExpr, nullable AExpr, nullable AExpr) */
@@ -3992,38 +2753,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AEqExpr__empty_init]))(self) /* empty_init on <self:AEqExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6142);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3238);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AEqExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6143);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3239);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6144);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3240);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AEqExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6145);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3241);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#init_aeqexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AEqExpr__init_aeqexpr(val* self, val* p0, val* p1) {
-parser_prod__AEqExpr__init_aeqexpr(self, p0, p1);
+parser_prod__AEqExpr__init_aeqexpr(self, p0, p1); /* Direct call parser_prod#AEqExpr#init_aeqexpr on <self:Object(AEqExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#replace_child for (self: AEqExpr, ANode, nullable ANode) */
@@ -4032,92 +2808,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AEqExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6150);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3246);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6153);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:AEqExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6156);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3247);
+show_backtrace(1);
+}
+{
+parser_prod__AEqExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AEqExpr#n_expr= on <self:AEqExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AEqExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6160);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AEqExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3250);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6163);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AEqExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6166);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3251);
+show_backtrace(1);
+}
+{
+parser_prod__AEqExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AEqExpr#n_expr2= on <self:AEqExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -4126,7 +2927,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AEqExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AEqExpr__replace_child(self, p0, p1);
+parser_prod__AEqExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AEqExpr#replace_child on <self:Object(AEqExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#n_expr= for (self: AEqExpr, AExpr) */
@@ -4134,12 +2935,17 @@ void parser_prod__AEqExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AEqExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AEqExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AEqExpr__n_expr_61d(self, p0);
+parser_prod__AEqExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AEqExpr#n_expr= on <self:Object(AEqExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#n_expr2= for (self: AEqExpr, AExpr) */
@@ -4147,12 +2953,17 @@ void parser_prod__AEqExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AEqExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AEqExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AEqExpr__n_expr2_61d(self, p0);
+parser_prod__AEqExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AEqExpr#n_expr2= on <self:Object(AEqExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#visit_all for (self: AEqExpr, Visitor) */
@@ -4162,33 +2973,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AEqExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6186);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3270);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AEqExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6187);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3271);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AEqExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AEqExpr__visit_all(val* self, val* p0) {
-parser_prod__AEqExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ANeExpr#empty_init for (self: ANeExpr) */
-void parser_prod__ANeExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#ANeExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ANeExpr__empty_init(val* self) {
-parser_prod__ANeExpr__empty_init(self);
+parser_prod__AEqExpr__visit_all(self, p0); /* Direct call parser_prod#AEqExpr#visit_all on <self:Object(AEqExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#init_aneexpr for (self: ANeExpr, nullable AExpr, nullable AExpr) */
@@ -4197,38 +3003,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ANeExpr__empty_init]))(self) /* empty_init on <self:ANeExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6199);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3280);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ANeExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6200);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3281);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6201);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3282);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:ANeExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6202);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3283);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#init_aneexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__ANeExpr__init_aneexpr(val* self, val* p0, val* p1) {
-parser_prod__ANeExpr__init_aneexpr(self, p0, p1);
+parser_prod__ANeExpr__init_aneexpr(self, p0, p1); /* Direct call parser_prod#ANeExpr#init_aneexpr on <self:Object(ANeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#replace_child for (self: ANeExpr, ANode, nullable ANode) */
@@ -4237,92 +3058,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ANeExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6207);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3288);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6210);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ANeExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6213);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3289);
+show_backtrace(1);
+}
+{
+parser_prod__ANeExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#ANeExpr#n_expr= on <self:ANeExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ANeExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6217);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ANeExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3292);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6220);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:ANeExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6223);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3293);
+show_backtrace(1);
+}
+{
+parser_prod__ANeExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#ANeExpr#n_expr2= on <self:ANeExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -4331,7 +3177,7 @@ RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__ANeExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ANeExpr__replace_child(self, p0, p1);
+parser_prod__ANeExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ANeExpr#replace_child on <self:Object(ANeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#n_expr= for (self: ANeExpr, AExpr) */
@@ -4339,12 +3185,17 @@ void parser_prod__ANeExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ANeExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ANeExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ANeExpr__n_expr_61d(self, p0);
+parser_prod__ANeExpr__n_expr_61d(self, p0); /* Direct call parser_prod#ANeExpr#n_expr= on <self:Object(ANeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#n_expr2= for (self: ANeExpr, AExpr) */
@@ -4352,12 +3203,17 @@ void parser_prod__ANeExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:ANeExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ANeExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__ANeExpr__n_expr2_61d(self, p0);
+parser_prod__ANeExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#ANeExpr#n_expr2= on <self:Object(ANeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#visit_all for (self: ANeExpr, Visitor) */
@@ -4367,33 +3223,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ANeExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6243);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3312);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ANeExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6244);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3313);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#ANeExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__ANeExpr__visit_all(val* self, val* p0) {
-parser_prod__ANeExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ALtExpr#empty_init for (self: ALtExpr) */
-void parser_prod__ALtExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#ALtExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ALtExpr__empty_init(val* self) {
-parser_prod__ALtExpr__empty_init(self);
+parser_prod__ANeExpr__visit_all(self, p0); /* Direct call parser_prod#ANeExpr#visit_all on <self:Object(ANeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#init_altexpr for (self: ALtExpr, nullable AExpr, nullable AExpr) */
@@ -4402,38 +3253,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ALtExpr__empty_init]))(self) /* empty_init on <self:ALtExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6256);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3322);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ALtExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6257);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3323);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6258);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3324);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:ALtExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6259);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3325);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#init_altexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__ALtExpr__init_altexpr(val* self, val* p0, val* p1) {
-parser_prod__ALtExpr__init_altexpr(self, p0, p1);
+parser_prod__ALtExpr__init_altexpr(self, p0, p1); /* Direct call parser_prod#ALtExpr#init_altexpr on <self:Object(ALtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#replace_child for (self: ALtExpr, ANode, nullable ANode) */
@@ -4442,92 +3308,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ALtExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6264);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3330);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
+}
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6267);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3331);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ALtExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6270);
-exit(1);
+{
+parser_prod__ALtExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#ALtExpr#n_expr= on <self:ALtExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALtExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6274);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALtExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3334);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6277);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:ALtExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6280);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3335);
+show_backtrace(1);
+}
+{
+parser_prod__ALtExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#ALtExpr#n_expr2= on <self:ALtExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -4536,7 +3427,7 @@ RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__ALtExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ALtExpr__replace_child(self, p0, p1);
+parser_prod__ALtExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ALtExpr#replace_child on <self:Object(ALtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#n_expr= for (self: ALtExpr, AExpr) */
@@ -4544,12 +3435,17 @@ void parser_prod__ALtExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ALtExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ALtExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ALtExpr__n_expr_61d(self, p0);
+parser_prod__ALtExpr__n_expr_61d(self, p0); /* Direct call parser_prod#ALtExpr#n_expr= on <self:Object(ALtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#n_expr2= for (self: ALtExpr, AExpr) */
@@ -4557,12 +3453,17 @@ void parser_prod__ALtExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:ALtExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ALtExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__ALtExpr__n_expr2_61d(self, p0);
+parser_prod__ALtExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#ALtExpr#n_expr2= on <self:Object(ALtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#visit_all for (self: ALtExpr, Visitor) */
@@ -4572,33 +3473,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ALtExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6300);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3354);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALtExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6301);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3355);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#ALtExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__ALtExpr__visit_all(val* self, val* p0) {
-parser_prod__ALtExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ALeExpr#empty_init for (self: ALeExpr) */
-void parser_prod__ALeExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#ALeExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ALeExpr__empty_init(val* self) {
-parser_prod__ALeExpr__empty_init(self);
+parser_prod__ALtExpr__visit_all(self, p0); /* Direct call parser_prod#ALtExpr#visit_all on <self:Object(ALtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#init_aleexpr for (self: ALeExpr, nullable AExpr, nullable AExpr) */
@@ -4607,38 +3503,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ALeExpr__empty_init]))(self) /* empty_init on <self:ALeExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6313);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3364);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ALeExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6314);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3365);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6315);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3366);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:ALeExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6316);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3367);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#init_aleexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__ALeExpr__init_aleexpr(val* self, val* p0, val* p1) {
-parser_prod__ALeExpr__init_aleexpr(self, p0, p1);
+parser_prod__ALeExpr__init_aleexpr(self, p0, p1); /* Direct call parser_prod#ALeExpr#init_aleexpr on <self:Object(ALeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#replace_child for (self: ALeExpr, ANode, nullable ANode) */
@@ -4647,92 +3558,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ALeExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6321);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3372);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6324);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ALeExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6327);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3373);
+show_backtrace(1);
+}
+{
+parser_prod__ALeExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#ALeExpr#n_expr= on <self:ALeExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALeExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6331);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALeExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3376);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6334);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:ALeExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6337);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3377);
+show_backtrace(1);
+}
+{
+parser_prod__ALeExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#ALeExpr#n_expr2= on <self:ALeExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -4741,7 +3677,7 @@ RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__ALeExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ALeExpr__replace_child(self, p0, p1);
+parser_prod__ALeExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ALeExpr#replace_child on <self:Object(ALeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#n_expr= for (self: ALeExpr, AExpr) */
@@ -4749,12 +3685,17 @@ void parser_prod__ALeExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ALeExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ALeExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ALeExpr__n_expr_61d(self, p0);
+parser_prod__ALeExpr__n_expr_61d(self, p0); /* Direct call parser_prod#ALeExpr#n_expr= on <self:Object(ALeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#n_expr2= for (self: ALeExpr, AExpr) */
@@ -4762,12 +3703,17 @@ void parser_prod__ALeExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:ALeExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ALeExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__ALeExpr__n_expr2_61d(self, p0);
+parser_prod__ALeExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#ALeExpr#n_expr2= on <self:Object(ALeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#visit_all for (self: ALeExpr, Visitor) */
@@ -4777,33 +3723,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ALeExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6357);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3396);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALeExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6358);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3397);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#ALeExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__ALeExpr__visit_all(val* self, val* p0) {
-parser_prod__ALeExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ALlExpr#empty_init for (self: ALlExpr) */
-void parser_prod__ALlExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#ALlExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ALlExpr__empty_init(val* self) {
-parser_prod__ALlExpr__empty_init(self);
+parser_prod__ALeExpr__visit_all(self, p0); /* Direct call parser_prod#ALeExpr#visit_all on <self:Object(ALeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#init_allexpr for (self: ALlExpr, nullable AExpr, nullable AExpr) */
@@ -4812,38 +3753,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ALlExpr__empty_init]))(self) /* empty_init on <self:ALlExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6370);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3406);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ALlExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6371);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3407);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6372);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3408);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:ALlExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6373);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3409);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#init_allexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__ALlExpr__init_allexpr(val* self, val* p0, val* p1) {
-parser_prod__ALlExpr__init_allexpr(self, p0, p1);
+parser_prod__ALlExpr__init_allexpr(self, p0, p1); /* Direct call parser_prod#ALlExpr#init_allexpr on <self:Object(ALlExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#replace_child for (self: ALlExpr, ANode, nullable ANode) */
@@ -4852,92 +3808,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ALlExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6378);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3414);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6381);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ALlExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6384);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3415);
+show_backtrace(1);
+}
+{
+parser_prod__ALlExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#ALlExpr#n_expr= on <self:ALlExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALlExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6388);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALlExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3418);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6391);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:ALlExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6394);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3419);
+show_backtrace(1);
+}
+{
+parser_prod__ALlExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#ALlExpr#n_expr2= on <self:ALlExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -4946,7 +3927,7 @@ RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__ALlExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ALlExpr__replace_child(self, p0, p1);
+parser_prod__ALlExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ALlExpr#replace_child on <self:Object(ALlExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#n_expr= for (self: ALlExpr, AExpr) */
@@ -4954,12 +3935,17 @@ void parser_prod__ALlExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ALlExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ALlExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ALlExpr__n_expr_61d(self, p0);
+parser_prod__ALlExpr__n_expr_61d(self, p0); /* Direct call parser_prod#ALlExpr#n_expr= on <self:Object(ALlExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#n_expr2= for (self: ALlExpr, AExpr) */
@@ -4967,12 +3953,17 @@ void parser_prod__ALlExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:ALlExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ALlExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__ALlExpr__n_expr2_61d(self, p0);
+parser_prod__ALlExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#ALlExpr#n_expr2= on <self:Object(ALlExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#visit_all for (self: ALlExpr, Visitor) */
@@ -4982,33 +3973,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ALlExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6414);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3438);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ALlExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6415);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3439);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#ALlExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__ALlExpr__visit_all(val* self, val* p0) {
-parser_prod__ALlExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AGtExpr#empty_init for (self: AGtExpr) */
-void parser_prod__AGtExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AGtExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AGtExpr__empty_init(val* self) {
-parser_prod__AGtExpr__empty_init(self);
+parser_prod__ALlExpr__visit_all(self, p0); /* Direct call parser_prod#ALlExpr#visit_all on <self:Object(ALlExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#init_agtexpr for (self: AGtExpr, nullable AExpr, nullable AExpr) */
@@ -5017,38 +4003,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AGtExpr__empty_init]))(self) /* empty_init on <self:AGtExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6427);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3448);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AGtExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6428);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3449);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6429);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3450);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AGtExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6430);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3451);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#init_agtexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AGtExpr__init_agtexpr(val* self, val* p0, val* p1) {
-parser_prod__AGtExpr__init_agtexpr(self, p0, p1);
+parser_prod__AGtExpr__init_agtexpr(self, p0, p1); /* Direct call parser_prod#AGtExpr#init_agtexpr on <self:Object(AGtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#replace_child for (self: AGtExpr, ANode, nullable ANode) */
@@ -5057,92 +4058,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AGtExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6435);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3456);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6438);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:AGtExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6441);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3457);
+show_backtrace(1);
+}
+{
+parser_prod__AGtExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AGtExpr#n_expr= on <self:AGtExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGtExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6445);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGtExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3460);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6448);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AGtExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6451);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3461);
+show_backtrace(1);
+}
+{
+parser_prod__AGtExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AGtExpr#n_expr2= on <self:AGtExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -5151,7 +4177,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AGtExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AGtExpr__replace_child(self, p0, p1);
+parser_prod__AGtExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AGtExpr#replace_child on <self:Object(AGtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#n_expr= for (self: AGtExpr, AExpr) */
@@ -5159,12 +4185,17 @@ void parser_prod__AGtExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AGtExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AGtExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AGtExpr__n_expr_61d(self, p0);
+parser_prod__AGtExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AGtExpr#n_expr= on <self:Object(AGtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#n_expr2= for (self: AGtExpr, AExpr) */
@@ -5172,12 +4203,17 @@ void parser_prod__AGtExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AGtExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AGtExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AGtExpr__n_expr2_61d(self, p0);
+parser_prod__AGtExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AGtExpr#n_expr2= on <self:Object(AGtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#visit_all for (self: AGtExpr, Visitor) */
@@ -5187,33 +4223,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AGtExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6471);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3480);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGtExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6472);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3481);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AGtExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AGtExpr__visit_all(val* self, val* p0) {
-parser_prod__AGtExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AGeExpr#empty_init for (self: AGeExpr) */
-void parser_prod__AGeExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AGeExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AGeExpr__empty_init(val* self) {
-parser_prod__AGeExpr__empty_init(self);
+parser_prod__AGtExpr__visit_all(self, p0); /* Direct call parser_prod#AGtExpr#visit_all on <self:Object(AGtExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#init_ageexpr for (self: AGeExpr, nullable AExpr, nullable AExpr) */
@@ -5222,38 +4253,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AGeExpr__empty_init]))(self) /* empty_init on <self:AGeExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6484);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3490);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AGeExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6485);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3491);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6486);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3492);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AGeExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6487);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3493);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#init_ageexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AGeExpr__init_ageexpr(val* self, val* p0, val* p1) {
-parser_prod__AGeExpr__init_ageexpr(self, p0, p1);
+parser_prod__AGeExpr__init_ageexpr(self, p0, p1); /* Direct call parser_prod#AGeExpr#init_ageexpr on <self:Object(AGeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#replace_child for (self: AGeExpr, ANode, nullable ANode) */
@@ -5262,92 +4308,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AGeExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6492);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3498);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6495);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:AGeExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6498);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3499);
+show_backtrace(1);
+}
+{
+parser_prod__AGeExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AGeExpr#n_expr= on <self:AGeExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGeExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6502);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGeExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3502);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6505);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AGeExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6508);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3503);
+show_backtrace(1);
+}
+{
+parser_prod__AGeExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AGeExpr#n_expr2= on <self:AGeExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -5356,7 +4427,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AGeExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AGeExpr__replace_child(self, p0, p1);
+parser_prod__AGeExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AGeExpr#replace_child on <self:Object(AGeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#n_expr= for (self: AGeExpr, AExpr) */
@@ -5364,12 +4435,17 @@ void parser_prod__AGeExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AGeExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AGeExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AGeExpr__n_expr_61d(self, p0);
+parser_prod__AGeExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AGeExpr#n_expr= on <self:Object(AGeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#n_expr2= for (self: AGeExpr, AExpr) */
@@ -5377,12 +4453,17 @@ void parser_prod__AGeExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AGeExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AGeExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AGeExpr__n_expr2_61d(self, p0);
+parser_prod__AGeExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AGeExpr#n_expr2= on <self:Object(AGeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#visit_all for (self: AGeExpr, Visitor) */
@@ -5392,33 +4473,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AGeExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6528);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3522);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGeExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6529);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3523);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AGeExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AGeExpr__visit_all(val* self, val* p0) {
-parser_prod__AGeExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AGgExpr#empty_init for (self: AGgExpr) */
-void parser_prod__AGgExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AGgExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AGgExpr__empty_init(val* self) {
-parser_prod__AGgExpr__empty_init(self);
+parser_prod__AGeExpr__visit_all(self, p0); /* Direct call parser_prod#AGeExpr#visit_all on <self:Object(AGeExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#init_aggexpr for (self: AGgExpr, nullable AExpr, nullable AExpr) */
@@ -5427,38 +4503,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AGgExpr__empty_init]))(self) /* empty_init on <self:AGgExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6541);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3532);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AGgExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6542);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3533);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6543);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3534);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AGgExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6544);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3535);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#init_aggexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AGgExpr__init_aggexpr(val* self, val* p0, val* p1) {
-parser_prod__AGgExpr__init_aggexpr(self, p0, p1);
+parser_prod__AGgExpr__init_aggexpr(self, p0, p1); /* Direct call parser_prod#AGgExpr#init_aggexpr on <self:Object(AGgExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#replace_child for (self: AGgExpr, ANode, nullable ANode) */
@@ -5467,92 +4558,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AGgExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6549);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3540);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6552);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:AGgExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6555);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3541);
+show_backtrace(1);
+}
+{
+parser_prod__AGgExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AGgExpr#n_expr= on <self:AGgExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGgExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6559);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGgExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3544);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6562);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AGgExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6565);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3545);
+show_backtrace(1);
+}
+{
+parser_prod__AGgExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AGgExpr#n_expr2= on <self:AGgExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -5561,7 +4677,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AGgExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AGgExpr__replace_child(self, p0, p1);
+parser_prod__AGgExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AGgExpr#replace_child on <self:Object(AGgExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#n_expr= for (self: AGgExpr, AExpr) */
@@ -5569,12 +4685,17 @@ void parser_prod__AGgExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AGgExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AGgExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AGgExpr__n_expr_61d(self, p0);
+parser_prod__AGgExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AGgExpr#n_expr= on <self:Object(AGgExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#n_expr2= for (self: AGgExpr, AExpr) */
@@ -5582,12 +4703,17 @@ void parser_prod__AGgExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AGgExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AGgExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AGgExpr__n_expr2_61d(self, p0);
+parser_prod__AGgExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AGgExpr#n_expr2= on <self:Object(AGgExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#visit_all for (self: AGgExpr, Visitor) */
@@ -5597,33 +4723,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AGgExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6585);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3564);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AGgExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6586);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3565);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AGgExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AGgExpr__visit_all(val* self, val* p0) {
-parser_prod__AGgExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AIsaExpr#empty_init for (self: AIsaExpr) */
-void parser_prod__AIsaExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AIsaExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AIsaExpr__empty_init(val* self) {
-parser_prod__AIsaExpr__empty_init(self);
+parser_prod__AGgExpr__visit_all(self, p0); /* Direct call parser_prod#AGgExpr#visit_all on <self:Object(AGgExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#init_aisaexpr for (self: AIsaExpr, nullable AExpr, nullable AType) */
@@ -5632,38 +4753,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_type /* var n_type: nullable AType */;
 var_n_expr = p0;
 var_n_type = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AIsaExpr__empty_init]))(self) /* empty_init on <self:AIsaExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6598);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3574);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AIsaExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AIsaExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6599);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3575);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_type == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6600);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_type == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3576);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AIsaExpr___n_type].val = var_n_type; /* _n_type on <self:AIsaExpr> */
 if (var_n_type == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6601);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3577);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_type->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_type, self) /* parent= on <var_n_type:nullable AType>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_type,self) on <var_n_type:nullable AType> */
+if (unlikely(var_n_type == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_type->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_type:nullable AType> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#init_aisaexpr for (self: Object, nullable AExpr, nullable AType) */
 void VIRTUAL_parser_prod__AIsaExpr__init_aisaexpr(val* self, val* p0, val* p1) {
-parser_prod__AIsaExpr__init_aisaexpr(self, p0, p1);
+parser_prod__AIsaExpr__init_aisaexpr(self, p0, p1); /* Direct call parser_prod#AIsaExpr#init_aisaexpr on <self:Object(AIsaExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#replace_child for (self: AIsaExpr, ANode, nullable ANode) */
@@ -5672,92 +4808,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var5 /* : AType */;
 short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+short int var7 /* : Bool */;
+int cltype;
+int idtype;
+const char* var_class_name;
+val* var8 /* : AType */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AIsaExpr___n_expr].val; /* _n_expr on <self:AIsaExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6606);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3582);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6609);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AIsaExpr___n_expr].val = var_new_child; /* _n_expr on <self:AIsaExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6612);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3583);
+show_backtrace(1);
+}
+{
+parser_prod__AIsaExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AIsaExpr#n_expr= on <self:AIsaExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AIsaExpr___n_type].val; /* _n_type on <self:AIsaExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_type");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6616);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AIsaExpr___n_type].val; /* _n_type on <self:AIsaExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_type");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3586);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AType>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AType> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AType> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AType */
-cltype10 = type_parser_nodes__AType.color;
-idtype11 = type_parser_nodes__AType.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6619);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__AIsaExpr___n_type].val = var_new_child; /* _n_type on <self:AIsaExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AType */
+cltype16 = type_parser_nodes__AType.color;
+idtype17 = type_parser_nodes__AType.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6622);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AType", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3587);
+show_backtrace(1);
+}
+{
+parser_prod__AIsaExpr__n_type_61d(self, var_new_child); /* Direct call parser_prod#AIsaExpr#n_type= on <self:AIsaExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -5766,7 +4927,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AIsaExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AIsaExpr__replace_child(self, p0, p1);
+parser_prod__AIsaExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AIsaExpr#replace_child on <self:Object(AIsaExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#n_expr= for (self: AIsaExpr, AExpr) */
@@ -5774,12 +4935,17 @@ void parser_prod__AIsaExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AIsaExpr___n_expr].val = var_node; /* _n_expr on <self:AIsaExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AIsaExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AIsaExpr__n_expr_61d(self, p0);
+parser_prod__AIsaExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AIsaExpr#n_expr= on <self:Object(AIsaExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#n_type= for (self: AIsaExpr, AType) */
@@ -5787,12 +4953,17 @@ void parser_prod__AIsaExpr__n_type_61d(val* self, val* p0) {
 val* var_node /* var node: AType */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AIsaExpr___n_type].val = var_node; /* _n_type on <self:AIsaExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AType>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AType> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AType> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#n_type= for (self: Object, AType) */
 void VIRTUAL_parser_prod__AIsaExpr__n_type_61d(val* self, val* p0) {
-parser_prod__AIsaExpr__n_type_61d(self, p0);
+parser_prod__AIsaExpr__n_type_61d(self, p0); /* Direct call parser_prod#AIsaExpr#n_type= on <self:Object(AIsaExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#visit_all for (self: AIsaExpr, Visitor) */
@@ -5802,33 +4973,28 @@ val* var /* : AExpr */;
 val* var1 /* : AType */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AIsaExpr___n_expr].val; /* _n_expr on <self:AIsaExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6642);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3606);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__AIsaExpr___n_type].val; /* _n_type on <self:AIsaExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_type");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6643);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_type");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3607);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AIsaExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AIsaExpr__visit_all(val* self, val* p0) {
-parser_prod__AIsaExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#APlusExpr#empty_init for (self: APlusExpr) */
-void parser_prod__APlusExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#APlusExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__APlusExpr__empty_init(val* self) {
-parser_prod__APlusExpr__empty_init(self);
+parser_prod__AIsaExpr__visit_all(self, p0); /* Direct call parser_prod#AIsaExpr#visit_all on <self:Object(AIsaExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#init_aplusexpr for (self: APlusExpr, nullable AExpr, nullable AExpr) */
@@ -5837,38 +5003,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__APlusExpr__empty_init]))(self) /* empty_init on <self:APlusExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6655);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3616);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:APlusExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6656);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3617);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6657);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3618);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:APlusExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6658);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3619);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#init_aplusexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__APlusExpr__init_aplusexpr(val* self, val* p0, val* p1) {
-parser_prod__APlusExpr__init_aplusexpr(self, p0, p1);
+parser_prod__APlusExpr__init_aplusexpr(self, p0, p1); /* Direct call parser_prod#APlusExpr#init_aplusexpr on <self:Object(APlusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#replace_child for (self: APlusExpr, ANode, nullable ANode) */
@@ -5877,92 +5058,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:APlusExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6663);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3624);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6666);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:APlusExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6669);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3625);
+show_backtrace(1);
+}
+{
+parser_prod__APlusExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#APlusExpr#n_expr= on <self:APlusExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:APlusExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6673);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:APlusExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3628);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6676);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:APlusExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6679);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3629);
+show_backtrace(1);
+}
+{
+parser_prod__APlusExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#APlusExpr#n_expr2= on <self:APlusExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -5971,7 +5177,7 @@ RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__APlusExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__APlusExpr__replace_child(self, p0, p1);
+parser_prod__APlusExpr__replace_child(self, p0, p1); /* Direct call parser_prod#APlusExpr#replace_child on <self:Object(APlusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#n_expr= for (self: APlusExpr, AExpr) */
@@ -5979,12 +5185,17 @@ void parser_prod__APlusExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:APlusExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__APlusExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__APlusExpr__n_expr_61d(self, p0);
+parser_prod__APlusExpr__n_expr_61d(self, p0); /* Direct call parser_prod#APlusExpr#n_expr= on <self:Object(APlusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#n_expr2= for (self: APlusExpr, AExpr) */
@@ -5992,12 +5203,17 @@ void parser_prod__APlusExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:APlusExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__APlusExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__APlusExpr__n_expr2_61d(self, p0);
+parser_prod__APlusExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#APlusExpr#n_expr2= on <self:Object(APlusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#visit_all for (self: APlusExpr, Visitor) */
@@ -6007,33 +5223,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:APlusExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6699);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3648);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:APlusExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6700);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3649);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#APlusExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__APlusExpr__visit_all(val* self, val* p0) {
-parser_prod__APlusExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AMinusExpr#empty_init for (self: AMinusExpr) */
-void parser_prod__AMinusExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AMinusExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AMinusExpr__empty_init(val* self) {
-parser_prod__AMinusExpr__empty_init(self);
+parser_prod__APlusExpr__visit_all(self, p0); /* Direct call parser_prod#APlusExpr#visit_all on <self:Object(APlusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#init_aminusexpr for (self: AMinusExpr, nullable AExpr, nullable AExpr) */
@@ -6042,38 +5253,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AMinusExpr__empty_init]))(self) /* empty_init on <self:AMinusExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6712);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3658);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AMinusExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6713);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3659);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6714);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3660);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AMinusExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6715);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3661);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#init_aminusexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AMinusExpr__init_aminusexpr(val* self, val* p0, val* p1) {
-parser_prod__AMinusExpr__init_aminusexpr(self, p0, p1);
+parser_prod__AMinusExpr__init_aminusexpr(self, p0, p1); /* Direct call parser_prod#AMinusExpr#init_aminusexpr on <self:Object(AMinusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#replace_child for (self: AMinusExpr, ANode, nullable ANode) */
@@ -6082,92 +5308,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AMinusExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6720);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3666);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6723);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:AMinusExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6726);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3667);
+show_backtrace(1);
+}
+{
+parser_prod__AMinusExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AMinusExpr#n_expr= on <self:AMinusExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AMinusExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6730);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AMinusExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3670);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6733);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AMinusExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6736);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3671);
+show_backtrace(1);
+}
+{
+parser_prod__AMinusExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AMinusExpr#n_expr2= on <self:AMinusExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -6176,7 +5427,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AMinusExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AMinusExpr__replace_child(self, p0, p1);
+parser_prod__AMinusExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AMinusExpr#replace_child on <self:Object(AMinusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#n_expr= for (self: AMinusExpr, AExpr) */
@@ -6184,12 +5435,17 @@ void parser_prod__AMinusExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AMinusExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AMinusExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AMinusExpr__n_expr_61d(self, p0);
+parser_prod__AMinusExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AMinusExpr#n_expr= on <self:Object(AMinusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#n_expr2= for (self: AMinusExpr, AExpr) */
@@ -6197,12 +5453,17 @@ void parser_prod__AMinusExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AMinusExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AMinusExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AMinusExpr__n_expr2_61d(self, p0);
+parser_prod__AMinusExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AMinusExpr#n_expr2= on <self:Object(AMinusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#visit_all for (self: AMinusExpr, Visitor) */
@@ -6212,33 +5473,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AMinusExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6756);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3690);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AMinusExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6757);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3691);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AMinusExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AMinusExpr__visit_all(val* self, val* p0) {
-parser_prod__AMinusExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AStarshipExpr#empty_init for (self: AStarshipExpr) */
-void parser_prod__AStarshipExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AStarshipExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AStarshipExpr__empty_init(val* self) {
-parser_prod__AStarshipExpr__empty_init(self);
+parser_prod__AMinusExpr__visit_all(self, p0); /* Direct call parser_prod#AMinusExpr#visit_all on <self:Object(AMinusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AStarshipExpr#init_astarshipexpr for (self: AStarshipExpr, nullable AExpr, nullable AExpr) */
@@ -6247,38 +5503,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AStarshipExpr__empty_init]))(self) /* empty_init on <self:AStarshipExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6769);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3700);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AStarshipExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6770);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3701);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6771);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3702);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AStarshipExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6772);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3703);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AStarshipExpr#init_astarshipexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__AStarshipExpr__init_astarshipexpr(val* self, val* p0, val* p1) {
-parser_prod__AStarshipExpr__init_astarshipexpr(self, p0, p1);
+parser_prod__AStarshipExpr__init_astarshipexpr(self, p0, p1); /* Direct call parser_prod#AStarshipExpr#init_astarshipexpr on <self:Object(AStarshipExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AStarshipExpr#replace_child for (self: AStarshipExpr, ANode, nullable ANode) */
@@ -6287,368 +5558,693 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
+int cltype;
+int idtype;
+const char* var_class_name;
+val* var8 /* : AExpr */;
+short int var9 /* : Bool */;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
+var_old_child = p0;
+var_new_child = p1;
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarshipExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3708);
+show_backtrace(1);
+}
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
+}
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype = type_parser_nodes__AExpr.color;
+idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
+if(cltype >= var_new_child->type->table_size) {
+var7 = 0;
+} else {
+var7 = var_new_child->type->type_table[cltype] == idtype;
+}
+}
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3709);
+show_backtrace(1);
+}
+{
+parser_prod__AStarshipExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AStarshipExpr#n_expr= on <self:AStarshipExpr>*/
+}
+goto RET_LABEL;
+} else {
+}
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarshipExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3712);
+show_backtrace(1);
+}
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
+}
+}
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3713);
+show_backtrace(1);
+}
+{
+parser_prod__AStarshipExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AStarshipExpr#n_expr2= on <self:AStarshipExpr>*/
+}
+goto RET_LABEL;
+} else {
+}
+RET_LABEL:;
+}
+/* method parser_prod#AStarshipExpr#replace_child for (self: Object, ANode, nullable ANode) */
+void VIRTUAL_parser_prod__AStarshipExpr__replace_child(val* self, val* p0, val* p1) {
+parser_prod__AStarshipExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AStarshipExpr#replace_child on <self:Object(AStarshipExpr)>*/
+RET_LABEL:;
+}
+/* method parser_prod#AStarshipExpr#n_expr= for (self: AStarshipExpr, AExpr) */
+void parser_prod__AStarshipExpr__n_expr_61d(val* self, val* p0) {
+val* var_node /* var node: AExpr */;
+var_node = p0;
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AStarshipExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+RET_LABEL:;
+}
+/* method parser_prod#AStarshipExpr#n_expr= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AStarshipExpr__n_expr_61d(val* self, val* p0) {
+parser_prod__AStarshipExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AStarshipExpr#n_expr= on <self:Object(AStarshipExpr)>*/
+RET_LABEL:;
+}
+/* method parser_prod#AStarshipExpr#n_expr2= for (self: AStarshipExpr, AExpr) */
+void parser_prod__AStarshipExpr__n_expr2_61d(val* self, val* p0) {
+val* var_node /* var node: AExpr */;
+var_node = p0;
+self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AStarshipExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+RET_LABEL:;
+}
+/* method parser_prod#AStarshipExpr#n_expr2= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AStarshipExpr__n_expr2_61d(val* self, val* p0) {
+parser_prod__AStarshipExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AStarshipExpr#n_expr2= on <self:Object(AStarshipExpr)>*/
+RET_LABEL:;
+}
+/* method parser_prod#AStarshipExpr#visit_all for (self: AStarshipExpr, Visitor) */
+void parser_prod__AStarshipExpr__visit_all(val* self, val* p0) {
+val* var_v /* var v: Visitor */;
+val* var /* : AExpr */;
+val* var1 /* : AExpr */;
+var_v = p0;
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarshipExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3732);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
+}
+var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarshipExpr> */
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3733);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
+}
+RET_LABEL:;
+}
+/* method parser_prod#AStarshipExpr#visit_all for (self: Object, Visitor) */
+void VIRTUAL_parser_prod__AStarshipExpr__visit_all(val* self, val* p0) {
+parser_prod__AStarshipExpr__visit_all(self, p0); /* Direct call parser_prod#AStarshipExpr#visit_all on <self:Object(AStarshipExpr)>*/
+RET_LABEL:;
+}
+/* method parser_prod#AStarExpr#init_astarexpr for (self: AStarExpr, nullable AExpr, nullable AExpr) */
+void parser_prod__AStarExpr__init_astarexpr(val* self, val* p0, val* p1) {
+val* var_n_expr /* var n_expr: nullable AExpr */;
+val* var_n_expr2 /* var n_expr2: nullable AExpr */;
+var_n_expr = p0;
+var_n_expr2 = p1;
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3742);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AStarExpr> */
+if (var_n_expr == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3743);
+show_backtrace(1);
+} else {
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3744);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AStarExpr> */
+if (var_n_expr2 == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3745);
+show_backtrace(1);
+} else {
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
+}
+RET_LABEL:;
+}
+/* method parser_prod#AStarExpr#init_astarexpr for (self: Object, nullable AExpr, nullable AExpr) */
+void VIRTUAL_parser_prod__AStarExpr__init_astarexpr(val* self, val* p0, val* p1) {
+parser_prod__AStarExpr__init_astarexpr(self, p0, p1); /* Direct call parser_prod#AStarExpr#init_astarexpr on <self:Object(AStarExpr)>*/
+RET_LABEL:;
+}
+/* method parser_prod#AStarExpr#replace_child for (self: AStarExpr, ANode, nullable ANode) */
+void parser_prod__AStarExpr__replace_child(val* self, val* p0, val* p1) {
+val* var_old_child /* var old_child: ANode */;
+val* var_new_child /* var new_child: nullable ANode */;
+val* var /* : AExpr */;
+short int var1 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarshipExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6777);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3750);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6780);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:AStarshipExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6783);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3751);
+show_backtrace(1);
+}
+{
+parser_prod__AStarExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AStarExpr#n_expr= on <self:AStarExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarshipExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6787);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3754);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6790);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AStarshipExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6793);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3755);
+show_backtrace(1);
+}
+{
+parser_prod__AStarExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AStarExpr#n_expr2= on <self:AStarExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
 RET_LABEL:;
 }
-/* method parser_prod#AStarshipExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__AStarshipExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AStarshipExpr__replace_child(self, p0, p1);
+/* method parser_prod#AStarExpr#replace_child for (self: Object, ANode, nullable ANode) */
+void VIRTUAL_parser_prod__AStarExpr__replace_child(val* self, val* p0, val* p1) {
+parser_prod__AStarExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AStarExpr#replace_child on <self:Object(AStarExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AStarshipExpr#n_expr= for (self: AStarshipExpr, AExpr) */
-void parser_prod__AStarshipExpr__n_expr_61d(val* self, val* p0) {
+/* method parser_prod#AStarExpr#n_expr= for (self: AStarExpr, AExpr) */
+void parser_prod__AStarExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AStarshipExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AStarExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#AStarshipExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AStarshipExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AStarshipExpr__n_expr_61d(self, p0);
+/* method parser_prod#AStarExpr#n_expr= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AStarExpr__n_expr_61d(val* self, val* p0) {
+parser_prod__AStarExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AStarExpr#n_expr= on <self:Object(AStarExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AStarshipExpr#n_expr2= for (self: AStarshipExpr, AExpr) */
-void parser_prod__AStarshipExpr__n_expr2_61d(val* self, val* p0) {
+/* method parser_prod#AStarExpr#n_expr2= for (self: AStarExpr, AExpr) */
+void parser_prod__AStarExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AStarshipExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AStarExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#AStarshipExpr#n_expr2= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AStarshipExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AStarshipExpr__n_expr2_61d(self, p0);
+/* method parser_prod#AStarExpr#n_expr2= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AStarExpr__n_expr2_61d(val* self, val* p0) {
+parser_prod__AStarExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AStarExpr#n_expr2= on <self:Object(AStarExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AStarshipExpr#visit_all for (self: AStarshipExpr, Visitor) */
-void parser_prod__AStarshipExpr__visit_all(val* self, val* p0) {
+/* method parser_prod#AStarExpr#visit_all for (self: AStarExpr, Visitor) */
+void parser_prod__AStarExpr__visit_all(val* self, val* p0) {
 val* var_v /* var v: Visitor */;
 val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarshipExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6813);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3774);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarshipExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6814);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
+var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarExpr> */
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3775);
+show_backtrace(1);
 }
-/* method parser_prod#AStarshipExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__AStarshipExpr__visit_all(val* self, val* p0) {
-parser_prod__AStarshipExpr__visit_all(self, p0);
-RET_LABEL:;
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#AStarExpr#empty_init for (self: AStarExpr) */
-void parser_prod__AStarExpr__empty_init(val* self) {
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AStarExpr__empty_init(val* self) {
-parser_prod__AStarExpr__empty_init(self);
+/* method parser_prod#AStarExpr#visit_all for (self: Object, Visitor) */
+void VIRTUAL_parser_prod__AStarExpr__visit_all(val* self, val* p0) {
+parser_prod__AStarExpr__visit_all(self, p0); /* Direct call parser_prod#AStarExpr#visit_all on <self:Object(AStarExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#init_astarexpr for (self: AStarExpr, nullable AExpr, nullable AExpr) */
-void parser_prod__AStarExpr__init_astarexpr(val* self, val* p0, val* p1) {
+/* method parser_prod#AStarstarExpr#init_astarstarexpr for (self: AStarstarExpr, nullable AExpr, nullable AExpr) */
+void parser_prod__AStarstarExpr__init_astarstarexpr(val* self, val* p0, val* p1) {
 val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AStarExpr__empty_init]))(self) /* empty_init on <self:AStarExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6826);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3784);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AStarExpr> */
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AStarstarExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6827);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3785);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6828);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AStarExpr> */
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3786);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:AStarstarExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6829);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3787);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#init_astarexpr for (self: Object, nullable AExpr, nullable AExpr) */
-void VIRTUAL_parser_prod__AStarExpr__init_astarexpr(val* self, val* p0, val* p1) {
-parser_prod__AStarExpr__init_astarexpr(self, p0, p1);
+/* method parser_prod#AStarstarExpr#init_astarstarexpr for (self: Object, nullable AExpr, nullable AExpr) */
+void VIRTUAL_parser_prod__AStarstarExpr__init_astarstarexpr(val* self, val* p0, val* p1) {
+parser_prod__AStarstarExpr__init_astarstarexpr(self, p0, p1); /* Direct call parser_prod#AStarstarExpr#init_astarstarexpr on <self:Object(AStarstarExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#replace_child for (self: AStarExpr, ANode, nullable ANode) */
-void parser_prod__AStarExpr__replace_child(val* self, val* p0, val* p1) {
+/* method parser_prod#AStarstarExpr#replace_child for (self: AStarstarExpr, ANode, nullable ANode) */
+void parser_prod__AStarstarExpr__replace_child(val* self, val* p0, val* p1) {
 val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6834);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarstarExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3792);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6837);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:AStarExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6840);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3793);
+show_backtrace(1);
+}
+{
+parser_prod__AStarstarExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AStarstarExpr#n_expr= on <self:AStarstarExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6844);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarstarExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3796);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6847);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:AStarExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6850);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3797);
+show_backtrace(1);
+}
+{
+parser_prod__AStarstarExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#AStarstarExpr#n_expr2= on <self:AStarstarExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__AStarExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AStarExpr__replace_child(self, p0, p1);
+/* method parser_prod#AStarstarExpr#replace_child for (self: Object, ANode, nullable ANode) */
+void VIRTUAL_parser_prod__AStarstarExpr__replace_child(val* self, val* p0, val* p1) {
+parser_prod__AStarstarExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AStarstarExpr#replace_child on <self:Object(AStarstarExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#n_expr= for (self: AStarExpr, AExpr) */
-void parser_prod__AStarExpr__n_expr_61d(val* self, val* p0) {
+/* method parser_prod#AStarstarExpr#n_expr= for (self: AStarstarExpr, AExpr) */
+void parser_prod__AStarstarExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AStarExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AStarstarExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AStarExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AStarExpr__n_expr_61d(self, p0);
+/* method parser_prod#AStarstarExpr#n_expr= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AStarstarExpr__n_expr_61d(val* self, val* p0) {
+parser_prod__AStarstarExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AStarstarExpr#n_expr= on <self:Object(AStarstarExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#n_expr2= for (self: AStarExpr, AExpr) */
-void parser_prod__AStarExpr__n_expr2_61d(val* self, val* p0) {
+/* method parser_prod#AStarstarExpr#n_expr2= for (self: AStarstarExpr, AExpr) */
+void parser_prod__AStarstarExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AStarExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:AStarstarExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#n_expr2= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AStarExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__AStarExpr__n_expr2_61d(self, p0);
+/* method parser_prod#AStarstarExpr#n_expr2= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AStarstarExpr__n_expr2_61d(val* self, val* p0) {
+parser_prod__AStarstarExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#AStarstarExpr#n_expr2= on <self:Object(AStarstarExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#AStarExpr#visit_all for (self: AStarExpr, Visitor) */
-void parser_prod__AStarExpr__visit_all(val* self, val* p0) {
+/* method parser_prod#AStarstarExpr#visit_all for (self: AStarstarExpr, Visitor) */
+void parser_prod__AStarstarExpr__visit_all(val* self, val* p0) {
 val* var_v /* var v: Visitor */;
 val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6870);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AStarstarExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3816);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6871);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
+var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:AStarstarExpr> */
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3817);
+show_backtrace(1);
 }
-/* method parser_prod#AStarExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__AStarExpr__visit_all(val* self, val* p0) {
-parser_prod__AStarExpr__visit_all(self, p0);
-RET_LABEL:;
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#ASlashExpr#empty_init for (self: ASlashExpr) */
-void parser_prod__ASlashExpr__empty_init(val* self) {
 RET_LABEL:;
 }
-/* method parser_prod#ASlashExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ASlashExpr__empty_init(val* self) {
-parser_prod__ASlashExpr__empty_init(self);
+/* method parser_prod#AStarstarExpr#visit_all for (self: Object, Visitor) */
+void VIRTUAL_parser_prod__AStarstarExpr__visit_all(val* self, val* p0) {
+parser_prod__AStarstarExpr__visit_all(self, p0); /* Direct call parser_prod#AStarstarExpr#visit_all on <self:Object(AStarstarExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#init_aslashexpr for (self: ASlashExpr, nullable AExpr, nullable AExpr) */
@@ -6657,38 +6253,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ASlashExpr__empty_init]))(self) /* empty_init on <self:ASlashExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6883);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3826);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ASlashExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6884);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3827);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6885);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3828);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:ASlashExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6886);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3829);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#init_aslashexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__ASlashExpr__init_aslashexpr(val* self, val* p0, val* p1) {
-parser_prod__ASlashExpr__init_aslashexpr(self, p0, p1);
+parser_prod__ASlashExpr__init_aslashexpr(self, p0, p1); /* Direct call parser_prod#ASlashExpr#init_aslashexpr on <self:Object(ASlashExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#replace_child for (self: ASlashExpr, ANode, nullable ANode) */
@@ -6697,92 +6308,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ASlashExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6891);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3834);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6894);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ASlashExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6897);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3835);
+show_backtrace(1);
+}
+{
+parser_prod__ASlashExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#ASlashExpr#n_expr= on <self:ASlashExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ASlashExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6901);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ASlashExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3838);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6904);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:ASlashExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6907);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3839);
+show_backtrace(1);
+}
+{
+parser_prod__ASlashExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#ASlashExpr#n_expr2= on <self:ASlashExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -6791,7 +6427,7 @@ RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__ASlashExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ASlashExpr__replace_child(self, p0, p1);
+parser_prod__ASlashExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ASlashExpr#replace_child on <self:Object(ASlashExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#n_expr= for (self: ASlashExpr, AExpr) */
@@ -6799,12 +6435,17 @@ void parser_prod__ASlashExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ASlashExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ASlashExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ASlashExpr__n_expr_61d(self, p0);
+parser_prod__ASlashExpr__n_expr_61d(self, p0); /* Direct call parser_prod#ASlashExpr#n_expr= on <self:Object(ASlashExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#n_expr2= for (self: ASlashExpr, AExpr) */
@@ -6812,12 +6453,17 @@ void parser_prod__ASlashExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:ASlashExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__ASlashExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__ASlashExpr__n_expr2_61d(self, p0);
+parser_prod__ASlashExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#ASlashExpr#n_expr2= on <self:Object(ASlashExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#visit_all for (self: ASlashExpr, Visitor) */
@@ -6827,33 +6473,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ASlashExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6927);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3858);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:ASlashExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6928);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3859);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#ASlashExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__ASlashExpr__visit_all(val* self, val* p0) {
-parser_prod__ASlashExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#APercentExpr#empty_init for (self: APercentExpr) */
-void parser_prod__APercentExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#APercentExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__APercentExpr__empty_init(val* self) {
-parser_prod__APercentExpr__empty_init(self);
+parser_prod__ASlashExpr__visit_all(self, p0); /* Direct call parser_prod#ASlashExpr#visit_all on <self:Object(ASlashExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#init_apercentexpr for (self: APercentExpr, nullable AExpr, nullable AExpr) */
@@ -6862,38 +6503,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_expr2 /* var n_expr2: nullable AExpr */;
 var_n_expr = p0;
 var_n_expr2 = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__APercentExpr__empty_init]))(self) /* empty_init on <self:APercentExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6940);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3868);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:APercentExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6941);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3869);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6942);
-exit(1);
+}
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3870);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_n_expr2; /* _n_expr2 on <self:APercentExpr> */
 if (var_n_expr2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6943);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3871);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr2->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr2, self) /* parent= on <var_n_expr2:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr2,self) on <var_n_expr2:nullable AExpr> */
+if (unlikely(var_n_expr2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr2->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr2:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#init_apercentexpr for (self: Object, nullable AExpr, nullable AExpr) */
 void VIRTUAL_parser_prod__APercentExpr__init_apercentexpr(val* self, val* p0, val* p1) {
-parser_prod__APercentExpr__init_apercentexpr(self, p0, p1);
+parser_prod__APercentExpr__init_apercentexpr(self, p0, p1); /* Direct call parser_prod#APercentExpr#init_apercentexpr on <self:Object(APercentExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#replace_child for (self: APercentExpr, ANode, nullable ANode) */
@@ -6902,92 +6558,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:APercentExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6948);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3876);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6951);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:APercentExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6954);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3877);
+show_backtrace(1);
+}
+{
+parser_prod__APercentExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#APercentExpr#n_expr= on <self:APercentExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:APercentExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6958);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:APercentExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3880);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6961);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_new_child; /* _n_expr2 on <self:APercentExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6964);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3881);
+show_backtrace(1);
+}
+{
+parser_prod__APercentExpr__n_expr2_61d(self, var_new_child); /* Direct call parser_prod#APercentExpr#n_expr2= on <self:APercentExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -6996,7 +6677,7 @@ RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__APercentExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__APercentExpr__replace_child(self, p0, p1);
+parser_prod__APercentExpr__replace_child(self, p0, p1); /* Direct call parser_prod#APercentExpr#replace_child on <self:Object(APercentExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#n_expr= for (self: APercentExpr, AExpr) */
@@ -7004,12 +6685,17 @@ void parser_prod__APercentExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:APercentExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__APercentExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__APercentExpr__n_expr_61d(self, p0);
+parser_prod__APercentExpr__n_expr_61d(self, p0); /* Direct call parser_prod#APercentExpr#n_expr= on <self:Object(APercentExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#n_expr2= for (self: APercentExpr, AExpr) */
@@ -7017,12 +6703,17 @@ void parser_prod__APercentExpr__n_expr2_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val = var_node; /* _n_expr2 on <self:APercentExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#n_expr2= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__APercentExpr__n_expr2_61d(val* self, val* p0) {
-parser_prod__APercentExpr__n_expr2_61d(self, p0);
+parser_prod__APercentExpr__n_expr2_61d(self, p0); /* Direct call parser_prod#APercentExpr#n_expr2= on <self:Object(APercentExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#visit_all for (self: APercentExpr, Visitor) */
@@ -7032,33 +6723,28 @@ val* var /* : AExpr */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:APercentExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6984);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3900);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ABinopExpr___n_expr2].val; /* _n_expr2 on <self:APercentExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr2");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6985);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr2");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3901);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#APercentExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__APercentExpr__visit_all(val* self, val* p0) {
-parser_prod__APercentExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AUminusExpr#empty_init for (self: AUminusExpr) */
-void parser_prod__AUminusExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AUminusExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AUminusExpr__empty_init(val* self) {
-parser_prod__AUminusExpr__empty_init(self);
+parser_prod__APercentExpr__visit_all(self, p0); /* Direct call parser_prod#APercentExpr#visit_all on <self:Object(APercentExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#init_auminusexpr for (self: AUminusExpr, nullable TMinus, nullable AExpr) */
@@ -7067,38 +6753,53 @@ val* var_n_minus /* var n_minus: nullable TMinus */;
 val* var_n_expr /* var n_expr: nullable AExpr */;
 var_n_minus = p0;
 var_n_expr = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AUminusExpr__empty_init]))(self) /* empty_init on <self:AUminusExpr>*/;
-if (var_n_minus == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6997);
-exit(1);
+if (unlikely(var_n_minus == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3910);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AUminusExpr___n_minus].val = var_n_minus; /* _n_minus on <self:AUminusExpr> */
 if (var_n_minus == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6998);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3911);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_minus->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_minus, self) /* parent= on <var_n_minus:nullable TMinus>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_minus,self) on <var_n_minus:nullable TMinus> */
+if (unlikely(var_n_minus == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 6999);
-exit(1);
+var_n_minus->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_minus:nullable TMinus> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3912);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AUminusExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7000);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3913);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#init_auminusexpr for (self: Object, nullable TMinus, nullable AExpr) */
 void VIRTUAL_parser_prod__AUminusExpr__init_auminusexpr(val* self, val* p0, val* p1) {
-parser_prod__AUminusExpr__init_auminusexpr(self, p0, p1);
+parser_prod__AUminusExpr__init_auminusexpr(self, p0, p1); /* Direct call parser_prod#AUminusExpr#init_auminusexpr on <self:Object(AUminusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#replace_child for (self: AUminusExpr, ANode, nullable ANode) */
@@ -7107,92 +6808,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : TMinus */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AExpr */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AExpr */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AUminusExpr___n_minus].val; /* _n_minus on <self:AUminusExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_minus");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7005);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_minus");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3918);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TMinus>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:TMinus> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:TMinus> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
+}
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TMinus */
+if (var1){
+/* <var_new_child:nullable ANode> isa TMinus */
 cltype = type_parser_nodes__TMinus.color;
 idtype = type_parser_nodes__TMinus.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7008);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AUminusExpr___n_minus].val = var_new_child; /* _n_minus on <self:AUminusExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7011);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TMinus", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3919);
+show_backtrace(1);
+}
+{
+parser_prod__AUminusExpr__n_minus_61d(self, var_new_child); /* Direct call parser_prod#AUminusExpr#n_minus= on <self:AUminusExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AUminusExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7015);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AUminusExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3922);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AExpr>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AExpr> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype10 = type_parser_nodes__AExpr.color;
-idtype11 = type_parser_nodes__AExpr.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7018);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:AUminusExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype16 = type_parser_nodes__AExpr.color;
+idtype17 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7021);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3923);
+show_backtrace(1);
+}
+{
+parser_prod__AUminusExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AUminusExpr#n_expr= on <self:AUminusExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -7201,7 +6927,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AUminusExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AUminusExpr__replace_child(self, p0, p1);
+parser_prod__AUminusExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AUminusExpr#replace_child on <self:Object(AUminusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#n_minus= for (self: AUminusExpr, TMinus) */
@@ -7209,12 +6935,17 @@ void parser_prod__AUminusExpr__n_minus_61d(val* self, val* p0) {
 val* var_node /* var node: TMinus */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AUminusExpr___n_minus].val = var_node; /* _n_minus on <self:AUminusExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TMinus>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TMinus> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TMinus> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#n_minus= for (self: Object, TMinus) */
 void VIRTUAL_parser_prod__AUminusExpr__n_minus_61d(val* self, val* p0) {
-parser_prod__AUminusExpr__n_minus_61d(self, p0);
+parser_prod__AUminusExpr__n_minus_61d(self, p0); /* Direct call parser_prod#AUminusExpr#n_minus= on <self:Object(AUminusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#n_expr= for (self: AUminusExpr, AExpr) */
@@ -7222,12 +6953,17 @@ void parser_prod__AUminusExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:AUminusExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AUminusExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AUminusExpr__n_expr_61d(self, p0);
+parser_prod__AUminusExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AUminusExpr#n_expr= on <self:Object(AUminusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#visit_all for (self: AUminusExpr, Visitor) */
@@ -7237,33 +6973,28 @@ val* var /* : TMinus */;
 val* var1 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AUminusExpr___n_minus].val; /* _n_minus on <self:AUminusExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_minus");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7041);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_minus");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3942);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:AUminusExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7042);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3943);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AUminusExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AUminusExpr__visit_all(val* self, val* p0) {
-parser_prod__AUminusExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ANewExpr#empty_init for (self: ANewExpr) */
-void parser_prod__ANewExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#ANewExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ANewExpr__empty_init(val* self) {
-parser_prod__ANewExpr__empty_init(self);
+parser_prod__AUminusExpr__visit_all(self, p0); /* Direct call parser_prod#AUminusExpr#visit_all on <self:Object(AUminusExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#init_anewexpr for (self: ANewExpr, nullable TKwnew, nullable AType, nullable TId, nullable AExprs) */
@@ -7273,67 +7004,114 @@ val* var_n_type /* var n_type: nullable AType */;
 val* var_n_id /* var n_id: nullable TId */;
 val* var_n_args /* var n_args: nullable AExprs */;
 val* var /* : null */;
-short int var1 /* : Bool */;
+short int var3 /* : Bool */;
+short int var4 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
+short int var8 /* : Bool */;
 var_n_kwnew = p0;
 var_n_type = p1;
 var_n_id = p2;
 var_n_args = p3;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ANewExpr__empty_init]))(self) /* empty_init on <self:ANewExpr>*/;
-if (var_n_kwnew == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7056);
-exit(1);
+if (unlikely(var_n_kwnew == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3954);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ANewExpr___n_kwnew].val = var_n_kwnew; /* _n_kwnew on <self:ANewExpr> */
 if (var_n_kwnew == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7057);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3955);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_kwnew->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwnew, self) /* parent= on <var_n_kwnew:nullable TKwnew>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_kwnew,self) on <var_n_kwnew:nullable TKwnew> */
+if (unlikely(var_n_kwnew == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_kwnew->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_kwnew:nullable TKwnew> */
+RET_LABEL1:(void)0;
 }
-if (var_n_type == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7058);
-exit(1);
+}
+if (unlikely(var_n_type == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3956);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ANewExpr___n_type].val = var_n_type; /* _n_type on <self:ANewExpr> */
 if (var_n_type == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7059);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3957);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_type->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_type, self) /* parent= on <var_n_type:nullable AType>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_type,self) on <var_n_type:nullable AType> */
+if (unlikely(var_n_type == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_type->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_type:nullable AType> */
+RET_LABEL2:(void)0;
+}
 }
 self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val = var_n_id; /* _n_id on <self:ANewExpr> */
 var = NULL;
 if (var_n_id == NULL) {
-var1 = 0; /* is null */
+var3 = 0; /* is null */
 } else {
-var1 = 1; /* arg is null and recv is not */
+var3 = 1; /* arg is null and recv is not */
+}
+if (0) {
+{ /* Inline kernel#Object#!= (var_n_id,var) on <var_n_id:nullable TId> */
+var_other = var;
+{
+var7 = ((short int (*)(val*, val*))(var_n_id->class->vft[COLOR_kernel__Object___61d_61d]))(var_n_id, var_other) /* == on <var_n_id:nullable TId(TId)>*/;
+var6 = var7;
+}
+var8 = !var6;
+var4 = var8;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
+}
+var3 = var4;
+}
+if (var3){
+{
+{ /* Inline parser_nodes#ANode#parent= (var_n_id,self) on <var_n_id:nullable TId(TId)> */
+var_n_id->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_id:nullable TId(TId)> */
+RET_LABEL9:(void)0;
+}
 }
-if (var1){
-((void (*)(val*, val*))(var_n_id->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_id, self) /* parent= on <var_n_id:nullable TId(TId)>*/;
 } else {
 }
-if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7064);
-exit(1);
+if (unlikely(var_n_args == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3960);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__ANewExpr___n_args].val = var_n_args; /* _n_args on <self:ANewExpr> */
 if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7065);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3961);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_args->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_args, self) /* parent= on <var_n_args:nullable AExprs>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_args,self) on <var_n_args:nullable AExprs> */
+if (unlikely(var_n_args == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_args->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_args:nullable AExprs> */
+RET_LABEL10:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#init_anewexpr for (self: Object, nullable TKwnew, nullable AType, nullable TId, nullable AExprs) */
 void VIRTUAL_parser_prod__ANewExpr__init_anewexpr(val* self, val* p0, val* p1, val* p2, val* p3) {
-parser_prod__ANewExpr__init_anewexpr(self, p0, p1, p2, p3);
+parser_prod__ANewExpr__init_anewexpr(self, p0, p1, p2, p3); /* Direct call parser_prod#ANewExpr#init_anewexpr on <self:Object(ANewExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#replace_child for (self: ANewExpr, ANode, nullable ANode) */
@@ -7342,181 +7120,228 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : TKwnew */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : AType */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : AType */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : nullable TId */;
-short int var13 /* : Bool */;
-val* var14 /* : null */;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
 short int var15 /* : Bool */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : null */;
-val* var20 /* : AExprs */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
+val* var19 /* : nullable TId */;
+short int var20 /* : Bool */;
 short int var21 /* : Bool */;
-val* var22 /* : null */;
 short int var23 /* : Bool */;
-short int var24 /* : Bool */;
-int cltype25;
-int idtype26;
+short int var25 /* : Bool */;
+short int var26 /* : Bool */;
+int cltype27;
+int idtype28;
+const char* var_class_name29;
+val* var30 /* : AExprs */;
+short int var31 /* : Bool */;
+short int var32 /* : Bool */;
+short int var34 /* : Bool */;
+short int var36 /* : Bool */;
+short int var37 /* : Bool */;
+int cltype38;
+int idtype39;
+const char* var_class_name40;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__ANewExpr___n_kwnew].val; /* _n_kwnew on <self:ANewExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwnew");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7070);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwnew");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3966);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:TKwnew>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:TKwnew> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:TKwnew> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwnew */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa TKwnew */
 cltype = type_parser_nodes__TKwnew.color;
 idtype = type_parser_nodes__TKwnew.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7073);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ANewExpr___n_kwnew].val = var_new_child; /* _n_kwnew on <self:ANewExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7076);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TKwnew", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3967);
+show_backtrace(1);
+}
+{
+parser_prod__ANewExpr__n_kwnew_61d(self, var_new_child); /* Direct call parser_prod#ANewExpr#n_kwnew= on <self:ANewExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ANewExpr___n_type].val; /* _n_type on <self:ANewExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_type");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7080);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ANewExpr___n_type].val; /* _n_type on <self:ANewExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_type");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3970);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:AType>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:AType> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:AType> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AType */
-cltype10 = type_parser_nodes__AType.color;
-idtype11 = type_parser_nodes__AType.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7083);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ANewExpr___n_type].val = var_new_child; /* _n_type on <self:ANewExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa AType */
+cltype16 = type_parser_nodes__AType.color;
+idtype17 = type_parser_nodes__AType.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7086);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AType", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3971);
+show_backtrace(1);
+}
+{
+parser_prod__ANewExpr__n_type_61d(self, var_new_child); /* Direct call parser_prod#ANewExpr#n_type= on <self:ANewExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var12 = self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val; /* _n_id on <self:ANewExpr> */
-if (var12 == NULL) {
-var13 = 0; /* <var_old_child:ANode> cannot be null */
+var19 = self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val; /* _n_id on <self:ANewExpr> */
+if (var19 == NULL) {
+var20 = 0; /* <var_old_child:ANode> cannot be null */
 } else {
-var13 = ((short int (*)(val*, val*))(var12->class->vft[COLOR_kernel__Object___61d_61d]))(var12, var_old_child) /* == on <var12:nullable TId>*/;
+{ /* Inline kernel#Object#== (var19,var_old_child) on <var19:nullable TId> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var19,var_other) on <var19:nullable TId(TId)> */
+var25 = var19 == var_other;
+var23 = var25;
+goto RET_LABEL24;
+RET_LABEL24:(void)0;
 }
-if (var13){
-var14 = NULL;
-if (var_new_child == NULL) {
-var15 = 0; /* is null */
-} else {
-var15 = 1; /* arg is null and recv is not */
 }
-if (var15){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TId */
-cltype17 = type_parser_nodes__TId.color;
-idtype18 = type_parser_nodes__TId.id;
-if(cltype17 >= var_new_child->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_new_child->type->type_table[cltype17] == idtype18;
+var21 = var23;
+goto RET_LABEL22;
+RET_LABEL22:(void)0;
 }
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7093);
-exit(1);
+var20 = var21;
 }
-self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val = var_new_child; /* _n_id on <self:ANewExpr> */
+if (var20){
+/* <var_new_child:nullable ANode> isa nullable TId */
+cltype27 = type_nullable_parser_nodes__TId.color;
+idtype28 = type_nullable_parser_nodes__TId.id;
+if(var_new_child == NULL) {
+var26 = 1;
+} else {
+if(cltype27 >= var_new_child->type->table_size) {
+var26 = 0;
 } else {
-var19 = NULL;
-self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val = var19; /* _n_id on <self:ANewExpr> */
+var26 = var_new_child->type->type_table[cltype27] == idtype28;
+}
+}
+if (unlikely(!var26)) {
+var_class_name29 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "nullable TId", var_class_name29);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3975);
+show_backtrace(1);
+}
+{
+parser_prod__ANewExpr__n_id_61d(self, var_new_child); /* Direct call parser_prod#ANewExpr#n_id= on <self:ANewExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var20 = self->attrs[COLOR_parser_nodes__ANewExpr___n_args].val; /* _n_args on <self:ANewExpr> */
-if (var20 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7100);
-exit(1);
+var30 = self->attrs[COLOR_parser_nodes__ANewExpr___n_args].val; /* _n_args on <self:ANewExpr> */
+if (unlikely(var30 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_args");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3978);
+show_backtrace(1);
 }
-var21 = ((short int (*)(val*, val*))(var20->class->vft[COLOR_kernel__Object___61d_61d]))(var20, var_old_child) /* == on <var20:AExprs>*/;
-if (var21){
-var22 = NULL;
-if (var_new_child == NULL) {
-var23 = 0; /* is null */
-} else {
-var23 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var30,var_old_child) on <var30:AExprs> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var30,var_other) on <var30:AExprs> */
+var36 = var30 == var_other;
+var34 = var36;
+goto RET_LABEL35;
+RET_LABEL35:(void)0;
 }
-if (var23){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExprs */
-cltype25 = type_parser_nodes__AExprs.color;
-idtype26 = type_parser_nodes__AExprs.id;
-if(cltype25 >= var_new_child->type->table_size) {
-var24 = 0;
-} else {
-var24 = var_new_child->type->type_table[cltype25] == idtype26;
 }
-if (!var24) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7103);
-exit(1);
+var32 = var34;
+goto RET_LABEL33;
+RET_LABEL33:(void)0;
+}
+var31 = var32;
 }
-self->attrs[COLOR_parser_nodes__ANewExpr___n_args].val = var_new_child; /* _n_args on <self:ANewExpr> */
+if (var31){
+/* <var_new_child:nullable ANode> isa AExprs */
+cltype38 = type_parser_nodes__AExprs.color;
+idtype39 = type_parser_nodes__AExprs.id;
+if(var_new_child == NULL) {
+var37 = 0;
+} else {
+if(cltype38 >= var_new_child->type->table_size) {
+var37 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7106);
-exit(1);
+var37 = var_new_child->type->type_table[cltype38] == idtype39;
+}
+}
+if (unlikely(!var37)) {
+var_class_name40 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExprs", var_class_name40);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 3979);
+show_backtrace(1);
+}
+{
+parser_prod__ANewExpr__n_args_61d(self, var_new_child); /* Direct call parser_prod#ANewExpr#n_args= on <self:ANewExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -7525,7 +7350,7 @@ RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__ANewExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ANewExpr__replace_child(self, p0, p1);
+parser_prod__ANewExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ANewExpr#replace_child on <self:Object(ANewExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#n_kwnew= for (self: ANewExpr, TKwnew) */
@@ -7533,12 +7358,17 @@ void parser_prod__ANewExpr__n_kwnew_61d(val* self, val* p0) {
 val* var_node /* var node: TKwnew */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ANewExpr___n_kwnew].val = var_node; /* _n_kwnew on <self:ANewExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TKwnew>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TKwnew> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TKwnew> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#n_kwnew= for (self: Object, TKwnew) */
 void VIRTUAL_parser_prod__ANewExpr__n_kwnew_61d(val* self, val* p0) {
-parser_prod__ANewExpr__n_kwnew_61d(self, p0);
+parser_prod__ANewExpr__n_kwnew_61d(self, p0); /* Direct call parser_prod#ANewExpr#n_kwnew= on <self:Object(ANewExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#n_type= for (self: ANewExpr, AType) */
@@ -7546,12 +7376,17 @@ void parser_prod__ANewExpr__n_type_61d(val* self, val* p0) {
 val* var_node /* var node: AType */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ANewExpr___n_type].val = var_node; /* _n_type on <self:ANewExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AType>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AType> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AType> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#n_type= for (self: Object, AType) */
 void VIRTUAL_parser_prod__ANewExpr__n_type_61d(val* self, val* p0) {
-parser_prod__ANewExpr__n_type_61d(self, p0);
+parser_prod__ANewExpr__n_type_61d(self, p0); /* Direct call parser_prod#ANewExpr#n_type= on <self:Object(ANewExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#n_id= for (self: ANewExpr, nullable TId) */
@@ -7559,6 +7394,11 @@ void parser_prod__ANewExpr__n_id_61d(val* self, val* p0) {
 val* var_node /* var node: nullable TId */;
 val* var /* : null */;
 short int var1 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var4 /* : Bool */;
+short int var5 /* : Bool */;
+short int var6 /* : Bool */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val = var_node; /* _n_id on <self:ANewExpr> */
 var = NULL;
@@ -7567,15 +7407,34 @@ var1 = 0; /* is null */
 } else {
 var1 = 1; /* arg is null and recv is not */
 }
+if (0) {
+{ /* Inline kernel#Object#!= (var_node,var) on <var_node:nullable TId> */
+var_other = var;
+{
+var5 = ((short int (*)(val*, val*))(var_node->class->vft[COLOR_kernel__Object___61d_61d]))(var_node, var_other) /* == on <var_node:nullable TId(TId)>*/;
+var4 = var5;
+}
+var6 = !var4;
+var2 = var6;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
 if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable TId(TId)>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:nullable TId(TId)> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:nullable TId(TId)> */
+RET_LABEL7:(void)0;
+}
+}
 } else {
 }
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#n_id= for (self: Object, nullable TId) */
 void VIRTUAL_parser_prod__ANewExpr__n_id_61d(val* self, val* p0) {
-parser_prod__ANewExpr__n_id_61d(self, p0);
+parser_prod__ANewExpr__n_id_61d(self, p0); /* Direct call parser_prod#ANewExpr#n_id= on <self:Object(ANewExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#n_args= for (self: ANewExpr, AExprs) */
@@ -7583,12 +7442,17 @@ void parser_prod__ANewExpr__n_args_61d(val* self, val* p0) {
 val* var_node /* var node: AExprs */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__ANewExpr___n_args].val = var_node; /* _n_args on <self:ANewExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExprs>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExprs> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExprs> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#n_args= for (self: Object, AExprs) */
 void VIRTUAL_parser_prod__ANewExpr__n_args_61d(val* self, val* p0) {
-parser_prod__ANewExpr__n_args_61d(self, p0);
+parser_prod__ANewExpr__n_args_61d(self, p0); /* Direct call parser_prod#ANewExpr#n_args= on <self:Object(ANewExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#visit_all for (self: ANewExpr, Visitor) */
@@ -7597,63 +7461,44 @@ val* var_v /* var v: Visitor */;
 val* var /* : TKwnew */;
 val* var1 /* : AType */;
 val* var2 /* : nullable TId */;
-val* var3 /* : null */;
-short int var4 /* : Bool */;
-val* var5 /* : nullable TId */;
-val* var6 /* : AExprs */;
+val* var3 /* : AExprs */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__ANewExpr___n_kwnew].val; /* _n_kwnew on <self:ANewExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwnew");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7138);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_kwnew");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4008);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__ANewExpr___n_type].val; /* _n_type on <self:ANewExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_type");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7139);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_type");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4009);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-var2 = self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val; /* _n_id on <self:ANewExpr> */
-var3 = NULL;
-if (var2 == NULL) {
-var4 = 0; /* is null */
-} else {
-var4 = 1; /* arg is null and recv is not */
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-if (var4){
-var5 = self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val; /* _n_id on <self:ANewExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7141);
-exit(1);
+var2 = self->attrs[COLOR_parser_nodes__ANewExpr___n_id].val; /* _n_id on <self:ANewExpr> */
+{
+parser_nodes__Visitor__enter_visit(var_v, var2); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var5) /* enter_visit on <var_v:Visitor>*/;
-} else {
+var3 = self->attrs[COLOR_parser_nodes__ANewExpr___n_args].val; /* _n_args on <self:ANewExpr> */
+if (unlikely(var3 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_args");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4011);
+show_backtrace(1);
 }
-var6 = self->attrs[COLOR_parser_nodes__ANewExpr___n_args].val; /* _n_args on <self:ANewExpr> */
-if (var6 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7143);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var3); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var6) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#ANewExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__ANewExpr__visit_all(val* self, val* p0) {
-parser_prod__ANewExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAttrExpr#empty_init for (self: AAttrExpr) */
-void parser_prod__AAttrExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AAttrExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AAttrExpr__empty_init(val* self) {
-parser_prod__AAttrExpr__empty_init(self);
+parser_prod__ANewExpr__visit_all(self, p0); /* Direct call parser_prod#ANewExpr#visit_all on <self:Object(ANewExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#init_aattrexpr for (self: AAttrExpr, nullable AExpr, nullable TAttrid) */
@@ -7662,38 +7507,53 @@ val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_id /* var n_id: nullable TAttrid */;
 var_n_expr = p0;
 var_n_id = p1;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AAttrExpr__empty_init]))(self) /* empty_init on <self:AAttrExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7155);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4020);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AAttrExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7156);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4021);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7157);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4022);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_n_id; /* _n_id on <self:AAttrExpr> */
 if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7158);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4023);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_id->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_id, self) /* parent= on <var_n_id:nullable TAttrid>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_id,self) on <var_n_id:nullable TAttrid> */
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_id->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_id:nullable TAttrid> */
+RET_LABEL2:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#init_aattrexpr for (self: Object, nullable AExpr, nullable TAttrid) */
 void VIRTUAL_parser_prod__AAttrExpr__init_aattrexpr(val* self, val* p0, val* p1) {
-parser_prod__AAttrExpr__init_aattrexpr(self, p0, p1);
+parser_prod__AAttrExpr__init_aattrexpr(self, p0, p1); /* Direct call parser_prod#AAttrExpr#init_aattrexpr on <self:Object(AAttrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#replace_child for (self: AAttrExpr, ANode, nullable ANode) */
@@ -7702,92 +7562,117 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : TAttrid */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : TAttrid */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val; /* _n_expr on <self:AAttrExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7163);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4028);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7166);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_new_child; /* _n_expr on <self:AAttrExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7169);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4029);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AAttrExpr#n_expr= on <self:AAttrExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7173);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4032);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:TAttrid>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:TAttrid> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:TAttrid> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TAttrid */
-cltype10 = type_parser_nodes__TAttrid.color;
-idtype11 = type_parser_nodes__TAttrid.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7176);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_new_child; /* _n_id on <self:AAttrExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa TAttrid */
+cltype16 = type_parser_nodes__TAttrid.color;
+idtype17 = type_parser_nodes__TAttrid.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7179);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TAttrid", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4033);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrExpr__n_id_61d(self, var_new_child); /* Direct call parser_prod#AAttrExpr#n_id= on <self:AAttrExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -7796,7 +7681,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AAttrExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AAttrExpr__replace_child(self, p0, p1);
+parser_prod__AAttrExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AAttrExpr#replace_child on <self:Object(AAttrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#n_expr= for (self: AAttrExpr, AExpr) */
@@ -7804,12 +7689,17 @@ void parser_prod__AAttrExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_node; /* _n_expr on <self:AAttrExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AAttrExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AAttrExpr__n_expr_61d(self, p0);
+parser_prod__AAttrExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AAttrExpr#n_expr= on <self:Object(AAttrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#n_id= for (self: AAttrExpr, TAttrid) */
@@ -7817,12 +7707,17 @@ void parser_prod__AAttrExpr__n_id_61d(val* self, val* p0) {
 val* var_node /* var node: TAttrid */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_node; /* _n_id on <self:AAttrExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TAttrid>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TAttrid> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TAttrid> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#n_id= for (self: Object, TAttrid) */
 void VIRTUAL_parser_prod__AAttrExpr__n_id_61d(val* self, val* p0) {
-parser_prod__AAttrExpr__n_id_61d(self, p0);
+parser_prod__AAttrExpr__n_id_61d(self, p0); /* Direct call parser_prod#AAttrExpr#n_id= on <self:Object(AAttrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#visit_all for (self: AAttrExpr, Visitor) */
@@ -7832,33 +7727,28 @@ val* var /* : AExpr */;
 val* var1 /* : TAttrid */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val; /* _n_expr on <self:AAttrExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7199);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4052);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7200);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4053);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AAttrExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AAttrExpr__visit_all(val* self, val* p0) {
-parser_prod__AAttrExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAttrAssignExpr#empty_init for (self: AAttrAssignExpr) */
-void parser_prod__AAttrAssignExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AAttrAssignExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AAttrAssignExpr__empty_init(val* self) {
-parser_prod__AAttrAssignExpr__empty_init(self);
+parser_prod__AAttrExpr__visit_all(self, p0); /* Direct call parser_prod#AAttrExpr#visit_all on <self:Object(AAttrExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#init_aattrassignexpr for (self: AAttrAssignExpr, nullable AExpr, nullable TAttrid, nullable TAssign, nullable AExpr) */
@@ -7871,64 +7761,95 @@ var_n_expr = p0;
 var_n_id = p1;
 var_n_assign = p2;
 var_n_value = p3;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AAttrAssignExpr__empty_init]))(self) /* empty_init on <self:AAttrAssignExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7214);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4064);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AAttrAssignExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7215);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4065);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7216);
-exit(1);
+}
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4066);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_n_id; /* _n_id on <self:AAttrAssignExpr> */
 if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7217);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4067);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_id->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_id, self) /* parent= on <var_n_id:nullable TAttrid>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_id,self) on <var_n_id:nullable TAttrid> */
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_assign == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7218);
-exit(1);
+var_n_id->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_id:nullable TAttrid> */
+RET_LABEL2:(void)0;
+}
+}
+if (unlikely(var_n_assign == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4068);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val = var_n_assign; /* _n_assign on <self:AAttrAssignExpr> */
 if (var_n_assign == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7219);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4069);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_assign->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_assign, self) /* parent= on <var_n_assign:nullable TAssign>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_assign,self) on <var_n_assign:nullable TAssign> */
+if (unlikely(var_n_assign == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_assign->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_assign:nullable TAssign> */
+RET_LABEL3:(void)0;
 }
-if (var_n_value == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7220);
-exit(1);
+}
+if (unlikely(var_n_value == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4070);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val = var_n_value; /* _n_value on <self:AAttrAssignExpr> */
 if (var_n_value == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7221);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4071);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_value->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_value, self) /* parent= on <var_n_value:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_value,self) on <var_n_value:nullable AExpr> */
+if (unlikely(var_n_value == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_value->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_value:nullable AExpr> */
+RET_LABEL4:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#init_aattrassignexpr for (self: Object, nullable AExpr, nullable TAttrid, nullable TAssign, nullable AExpr) */
 void VIRTUAL_parser_prod__AAttrAssignExpr__init_aattrassignexpr(val* self, val* p0, val* p1, val* p2, val* p3) {
-parser_prod__AAttrAssignExpr__init_aattrassignexpr(self, p0, p1, p2, p3);
+parser_prod__AAttrAssignExpr__init_aattrassignexpr(self, p0, p1, p2, p3); /* Direct call parser_prod#AAttrAssignExpr#init_aattrassignexpr on <self:Object(AAttrAssignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#replace_child for (self: AAttrAssignExpr, ANode, nullable ANode) */
@@ -7937,182 +7858,231 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : TAttrid */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : TAttrid */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : TAssign */;
-short int var13 /* : Bool */;
-val* var14 /* : null */;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
 short int var15 /* : Bool */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : AExpr */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
+val* var19 /* : TAssign */;
 short int var20 /* : Bool */;
-val* var21 /* : null */;
-short int var22 /* : Bool */;
+short int var21 /* : Bool */;
 short int var23 /* : Bool */;
-int cltype24;
-int idtype25;
+short int var25 /* : Bool */;
+short int var26 /* : Bool */;
+int cltype27;
+int idtype28;
+const char* var_class_name29;
+val* var30 /* : AExpr */;
+short int var31 /* : Bool */;
+short int var32 /* : Bool */;
+short int var34 /* : Bool */;
+short int var36 /* : Bool */;
+short int var37 /* : Bool */;
+int cltype38;
+int idtype39;
+const char* var_class_name40;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val; /* _n_expr on <self:AAttrAssignExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7226);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4076);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7229);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_new_child; /* _n_expr on <self:AAttrAssignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7232);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4077);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrAssignExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AAttrAssignExpr#n_expr= on <self:AAttrAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrAssignExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7236);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrAssignExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4080);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:TAttrid>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:TAttrid> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:TAttrid> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TAttrid */
-cltype10 = type_parser_nodes__TAttrid.color;
-idtype11 = type_parser_nodes__TAttrid.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7239);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_new_child; /* _n_id on <self:AAttrAssignExpr> */
+var9 = var10;
+}
+if (var9){
+/* <var_new_child:nullable ANode> isa TAttrid */
+cltype16 = type_parser_nodes__TAttrid.color;
+idtype17 = type_parser_nodes__TAttrid.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7242);
-exit(1);
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TAttrid", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4081);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrAssignExpr__n_id_61d(self, var_new_child); /* Direct call parser_prod#AAttrAssignExpr#n_id= on <self:AAttrAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var12 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val; /* _n_assign on <self:AAttrAssignExpr> */
-if (var12 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_assign");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7246);
-exit(1);
+var19 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val; /* _n_assign on <self:AAttrAssignExpr> */
+if (unlikely(var19 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_assign");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4084);
+show_backtrace(1);
 }
-var13 = ((short int (*)(val*, val*))(var12->class->vft[COLOR_kernel__Object___61d_61d]))(var12, var_old_child) /* == on <var12:TAssign>*/;
-if (var13){
-var14 = NULL;
-if (var_new_child == NULL) {
-var15 = 0; /* is null */
-} else {
-var15 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var19,var_old_child) on <var19:TAssign> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var19,var_other) on <var19:TAssign> */
+var25 = var19 == var_other;
+var23 = var25;
+goto RET_LABEL24;
+RET_LABEL24:(void)0;
 }
-if (var15){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TAssign */
-cltype17 = type_parser_nodes__TAssign.color;
-idtype18 = type_parser_nodes__TAssign.id;
-if(cltype17 >= var_new_child->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_new_child->type->type_table[cltype17] == idtype18;
 }
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7249);
-exit(1);
+var21 = var23;
+goto RET_LABEL22;
+RET_LABEL22:(void)0;
+}
+var20 = var21;
 }
-self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val = var_new_child; /* _n_assign on <self:AAttrAssignExpr> */
+if (var20){
+/* <var_new_child:nullable ANode> isa TAssign */
+cltype27 = type_parser_nodes__TAssign.color;
+idtype28 = type_parser_nodes__TAssign.id;
+if(var_new_child == NULL) {
+var26 = 0;
+} else {
+if(cltype27 >= var_new_child->type->table_size) {
+var26 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7252);
-exit(1);
+var26 = var_new_child->type->type_table[cltype27] == idtype28;
+}
+}
+if (unlikely(!var26)) {
+var_class_name29 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TAssign", var_class_name29);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4085);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrAssignExpr__n_assign_61d(self, var_new_child); /* Direct call parser_prod#AAttrAssignExpr#n_assign= on <self:AAttrAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var19 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val; /* _n_value on <self:AAttrAssignExpr> */
-if (var19 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_value");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7256);
-exit(1);
+var30 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val; /* _n_value on <self:AAttrAssignExpr> */
+if (unlikely(var30 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_value");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4088);
+show_backtrace(1);
 }
-var20 = ((short int (*)(val*, val*))(var19->class->vft[COLOR_kernel__Object___61d_61d]))(var19, var_old_child) /* == on <var19:AExpr>*/;
-if (var20){
-var21 = NULL;
-if (var_new_child == NULL) {
-var22 = 0; /* is null */
+{
+{ /* Inline kernel#Object#== (var30,var_old_child) on <var30:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var30,var_other) on <var30:AExpr> */
+var36 = var30 == var_other;
+var34 = var36;
+goto RET_LABEL35;
+RET_LABEL35:(void)0;
+}
+}
+var32 = var34;
+goto RET_LABEL33;
+RET_LABEL33:(void)0;
+}
+var31 = var32;
+}
+if (var31){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype38 = type_parser_nodes__AExpr.color;
+idtype39 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var37 = 0;
 } else {
-var22 = 1; /* arg is null and recv is not */
-}
-if (var22){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype24 = type_parser_nodes__AExpr.color;
-idtype25 = type_parser_nodes__AExpr.id;
-if(cltype24 >= var_new_child->type->table_size) {
-var23 = 0;
+if(cltype38 >= var_new_child->type->table_size) {
+var37 = 0;
 } else {
-var23 = var_new_child->type->type_table[cltype24] == idtype25;
+var37 = var_new_child->type->type_table[cltype38] == idtype39;
 }
-if (!var23) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7259);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val = var_new_child; /* _n_value on <self:AAttrAssignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7262);
-exit(1);
+if (unlikely(!var37)) {
+var_class_name40 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name40);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4089);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrAssignExpr__n_value_61d(self, var_new_child); /* Direct call parser_prod#AAttrAssignExpr#n_value= on <self:AAttrAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -8121,7 +8091,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AAttrAssignExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AAttrAssignExpr__replace_child(self, p0, p1);
+parser_prod__AAttrAssignExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AAttrAssignExpr#replace_child on <self:Object(AAttrAssignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#n_expr= for (self: AAttrAssignExpr, AExpr) */
@@ -8129,12 +8099,17 @@ void parser_prod__AAttrAssignExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_node; /* _n_expr on <self:AAttrAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AAttrAssignExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AAttrAssignExpr__n_expr_61d(self, p0);
+parser_prod__AAttrAssignExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AAttrAssignExpr#n_expr= on <self:Object(AAttrAssignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#n_id= for (self: AAttrAssignExpr, TAttrid) */
@@ -8142,12 +8117,17 @@ void parser_prod__AAttrAssignExpr__n_id_61d(val* self, val* p0) {
 val* var_node /* var node: TAttrid */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_node; /* _n_id on <self:AAttrAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TAttrid>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TAttrid> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TAttrid> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#n_id= for (self: Object, TAttrid) */
 void VIRTUAL_parser_prod__AAttrAssignExpr__n_id_61d(val* self, val* p0) {
-parser_prod__AAttrAssignExpr__n_id_61d(self, p0);
+parser_prod__AAttrAssignExpr__n_id_61d(self, p0); /* Direct call parser_prod#AAttrAssignExpr#n_id= on <self:Object(AAttrAssignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#n_assign= for (self: AAttrAssignExpr, TAssign) */
@@ -8155,12 +8135,17 @@ void parser_prod__AAttrAssignExpr__n_assign_61d(val* self, val* p0) {
 val* var_node /* var node: TAssign */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val = var_node; /* _n_assign on <self:AAttrAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TAssign>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TAssign> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TAssign> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#n_assign= for (self: Object, TAssign) */
 void VIRTUAL_parser_prod__AAttrAssignExpr__n_assign_61d(val* self, val* p0) {
-parser_prod__AAttrAssignExpr__n_assign_61d(self, p0);
+parser_prod__AAttrAssignExpr__n_assign_61d(self, p0); /* Direct call parser_prod#AAttrAssignExpr#n_assign= on <self:Object(AAttrAssignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#n_value= for (self: AAttrAssignExpr, AExpr) */
@@ -8168,12 +8153,17 @@ void parser_prod__AAttrAssignExpr__n_value_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val = var_node; /* _n_value on <self:AAttrAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#n_value= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AAttrAssignExpr__n_value_61d(val* self, val* p0) {
-parser_prod__AAttrAssignExpr__n_value_61d(self, p0);
+parser_prod__AAttrAssignExpr__n_value_61d(self, p0); /* Direct call parser_prod#AAttrAssignExpr#n_value= on <self:Object(AAttrAssignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#visit_all for (self: AAttrAssignExpr, Visitor) */
@@ -8185,47 +8175,46 @@ val* var2 /* : TAssign */;
 val* var3 /* : AExpr */;
 var_v = p0;
 var = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val; /* _n_expr on <self:AAttrAssignExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7292);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4118);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
 var1 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrAssignExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7293);
-exit(1);
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4119);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
 var2 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val; /* _n_assign on <self:AAttrAssignExpr> */
-if (var2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_assign");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7294);
-exit(1);
+if (unlikely(var2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_assign");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4120);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var2); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var2) /* enter_visit on <var_v:Visitor>*/;
 var3 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val; /* _n_value on <self:AAttrAssignExpr> */
-if (var3 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_value");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7295);
-exit(1);
+if (unlikely(var3 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_value");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4121);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var3); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var3) /* enter_visit on <var_v:Visitor>*/;
 RET_LABEL:;
 }
 /* method parser_prod#AAttrAssignExpr#visit_all for (self: Object, Visitor) */
 void VIRTUAL_parser_prod__AAttrAssignExpr__visit_all(val* self, val* p0) {
-parser_prod__AAttrAssignExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#empty_init for (self: AAttrReassignExpr) */
-void parser_prod__AAttrReassignExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__AAttrReassignExpr__empty_init(val* self) {
-parser_prod__AAttrReassignExpr__empty_init(self);
+parser_prod__AAttrAssignExpr__visit_all(self, p0); /* Direct call parser_prod#AAttrAssignExpr#visit_all on <self:Object(AAttrAssignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrReassignExpr#init_aattrreassignexpr for (self: AAttrReassignExpr, nullable AExpr, nullable TAttrid, nullable AAssignOp, nullable AExpr) */
@@ -8238,64 +8227,95 @@ var_n_expr = p0;
 var_n_id = p1;
 var_n_assign_op = p2;
 var_n_value = p3;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__AAttrReassignExpr__empty_init]))(self) /* empty_init on <self:AAttrReassignExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7309);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4132);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_n_expr; /* _n_expr on <self:AAttrReassignExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7310);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4133);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7311);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
+}
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4134);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_n_id; /* _n_id on <self:AAttrReassignExpr> */
 if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7312);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4135);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_id->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_id, self) /* parent= on <var_n_id:nullable TAttrid>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_id,self) on <var_n_id:nullable TAttrid> */
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_id->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_id:nullable TAttrid> */
+RET_LABEL2:(void)0;
 }
-if (var_n_assign_op == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7313);
-exit(1);
+}
+if (unlikely(var_n_assign_op == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4136);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val = var_n_assign_op; /* _n_assign_op on <self:AAttrReassignExpr> */
 if (var_n_assign_op == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7314);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4137);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_assign_op->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_assign_op, self) /* parent= on <var_n_assign_op:nullable AAssignOp>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_assign_op,self) on <var_n_assign_op:nullable AAssignOp> */
+if (unlikely(var_n_assign_op == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_value == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7315);
-exit(1);
+var_n_assign_op->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_assign_op:nullable AAssignOp> */
+RET_LABEL3:(void)0;
+}
+}
+if (unlikely(var_n_value == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4138);
+show_backtrace(1);
 }
 self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val = var_n_value; /* _n_value on <self:AAttrReassignExpr> */
 if (var_n_value == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7316);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4139);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_value->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_value, self) /* parent= on <var_n_value:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_value,self) on <var_n_value:nullable AExpr> */
+if (unlikely(var_n_value == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_value->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_value:nullable AExpr> */
+RET_LABEL4:(void)0;
+}
 }
 RET_LABEL:;
 }
 /* method parser_prod#AAttrReassignExpr#init_aattrreassignexpr for (self: Object, nullable AExpr, nullable TAttrid, nullable AAssignOp, nullable AExpr) */
 void VIRTUAL_parser_prod__AAttrReassignExpr__init_aattrreassignexpr(val* self, val* p0, val* p1, val* p2, val* p3) {
-parser_prod__AAttrReassignExpr__init_aattrreassignexpr(self, p0, p1, p2, p3);
+parser_prod__AAttrReassignExpr__init_aattrreassignexpr(self, p0, p1, p2, p3); /* Direct call parser_prod#AAttrReassignExpr#init_aattrreassignexpr on <self:Object(AAttrReassignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrReassignExpr#replace_child for (self: AAttrReassignExpr, ANode, nullable ANode) */
@@ -8304,182 +8324,231 @@ val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : TAttrid */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : TAttrid */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : AAssignOp */;
-short int var13 /* : Bool */;
-val* var14 /* : null */;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
 short int var15 /* : Bool */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : AExpr */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
+val* var19 /* : AAssignOp */;
 short int var20 /* : Bool */;
-val* var21 /* : null */;
-short int var22 /* : Bool */;
+short int var21 /* : Bool */;
 short int var23 /* : Bool */;
-int cltype24;
-int idtype25;
+short int var25 /* : Bool */;
+short int var26 /* : Bool */;
+int cltype27;
+int idtype28;
+const char* var_class_name29;
+val* var30 /* : AExpr */;
+short int var31 /* : Bool */;
+short int var32 /* : Bool */;
+short int var34 /* : Bool */;
+short int var36 /* : Bool */;
+short int var37 /* : Bool */;
+int cltype38;
+int idtype39;
+const char* var_class_name40;
 var_old_child = p0;
 var_new_child = p1;
 var = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val; /* _n_expr on <self:AAttrReassignExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7321);
-exit(1);
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4144);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7324);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_new_child; /* _n_expr on <self:AAttrReassignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7327);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4145);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrReassignExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#AAttrReassignExpr#n_expr= on <self:AAttrReassignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrReassignExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7331);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrReassignExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4148);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:TAttrid>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:TAttrid> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:TAttrid> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TAttrid */
-cltype10 = type_parser_nodes__TAttrid.color;
-idtype11 = type_parser_nodes__TAttrid.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7334);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_new_child; /* _n_id on <self:AAttrReassignExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa TAttrid */
+cltype16 = type_parser_nodes__TAttrid.color;
+idtype17 = type_parser_nodes__TAttrid.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7337);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TAttrid", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4149);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrReassignExpr__n_id_61d(self, var_new_child); /* Direct call parser_prod#AAttrReassignExpr#n_id= on <self:AAttrReassignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var12 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val; /* _n_assign_op on <self:AAttrReassignExpr> */
-if (var12 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_assign_op");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7341);
-exit(1);
+var19 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val; /* _n_assign_op on <self:AAttrReassignExpr> */
+if (unlikely(var19 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_assign_op");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4152);
+show_backtrace(1);
 }
-var13 = ((short int (*)(val*, val*))(var12->class->vft[COLOR_kernel__Object___61d_61d]))(var12, var_old_child) /* == on <var12:AAssignOp>*/;
-if (var13){
-var14 = NULL;
-if (var_new_child == NULL) {
-var15 = 0; /* is null */
-} else {
-var15 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var19,var_old_child) on <var19:AAssignOp> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var19,var_other) on <var19:AAssignOp> */
+var25 = var19 == var_other;
+var23 = var25;
+goto RET_LABEL24;
+RET_LABEL24:(void)0;
 }
-if (var15){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AAssignOp */
-cltype17 = type_parser_nodes__AAssignOp.color;
-idtype18 = type_parser_nodes__AAssignOp.id;
-if(cltype17 >= var_new_child->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_new_child->type->type_table[cltype17] == idtype18;
 }
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7344);
-exit(1);
+var21 = var23;
+goto RET_LABEL22;
+RET_LABEL22:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val = var_new_child; /* _n_assign_op on <self:AAttrReassignExpr> */
+var20 = var21;
+}
+if (var20){
+/* <var_new_child:nullable ANode> isa AAssignOp */
+cltype27 = type_parser_nodes__AAssignOp.color;
+idtype28 = type_parser_nodes__AAssignOp.id;
+if(var_new_child == NULL) {
+var26 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7347);
-exit(1);
+if(cltype27 >= var_new_child->type->table_size) {
+var26 = 0;
+} else {
+var26 = var_new_child->type->type_table[cltype27] == idtype28;
+}
+}
+if (unlikely(!var26)) {
+var_class_name29 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AAssignOp", var_class_name29);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4153);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrReassignExpr__n_assign_op_61d(self, var_new_child); /* Direct call parser_prod#AAttrReassignExpr#n_assign_op= on <self:AAttrReassignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var19 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val; /* _n_value on <self:AAttrReassignExpr> */
-if (var19 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_value");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7351);
-exit(1);
+var30 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val; /* _n_value on <self:AAttrReassignExpr> */
+if (unlikely(var30 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_value");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4156);
+show_backtrace(1);
 }
-var20 = ((short int (*)(val*, val*))(var19->class->vft[COLOR_kernel__Object___61d_61d]))(var19, var_old_child) /* == on <var19:AExpr>*/;
-if (var20){
-var21 = NULL;
-if (var_new_child == NULL) {
-var22 = 0; /* is null */
-} else {
-var22 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var30,var_old_child) on <var30:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var30,var_other) on <var30:AExpr> */
+var36 = var30 == var_other;
+var34 = var36;
+goto RET_LABEL35;
+RET_LABEL35:(void)0;
 }
-if (var22){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype24 = type_parser_nodes__AExpr.color;
-idtype25 = type_parser_nodes__AExpr.id;
-if(cltype24 >= var_new_child->type->table_size) {
-var23 = 0;
-} else {
-var23 = var_new_child->type->type_table[cltype24] == idtype25;
 }
-if (!var23) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7354);
-exit(1);
+var32 = var34;
+goto RET_LABEL33;
+RET_LABEL33:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val = var_new_child; /* _n_value on <self:AAttrReassignExpr> */
+var31 = var32;
+}
+if (var31){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype38 = type_parser_nodes__AExpr.color;
+idtype39 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var37 = 0;
+} else {
+if(cltype38 >= var_new_child->type->table_size) {
+var37 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7357);
-exit(1);
+var37 = var_new_child->type->type_table[cltype38] == idtype39;
+}
+}
+if (unlikely(!var37)) {
+var_class_name40 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name40);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4157);
+show_backtrace(1);
+}
+{
+parser_prod__AAttrReassignExpr__n_value_61d(self, var_new_child); /* Direct call parser_prod#AAttrReassignExpr#n_value= on <self:AAttrReassignExpr>*/
 }
 goto RET_LABEL;
 } else {
@@ -8488,7 +8557,7 @@ RET_LABEL:;
 }
 /* method parser_prod#AAttrReassignExpr#replace_child for (self: Object, ANode, nullable ANode) */
 void VIRTUAL_parser_prod__AAttrReassignExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__AAttrReassignExpr__replace_child(self, p0, p1);
+parser_prod__AAttrReassignExpr__replace_child(self, p0, p1); /* Direct call parser_prod#AAttrReassignExpr#replace_child on <self:Object(AAttrReassignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrReassignExpr#n_expr= for (self: AAttrReassignExpr, AExpr) */
@@ -8496,1505 +8565,1177 @@ void parser_prod__AAttrReassignExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
 self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val = var_node; /* _n_expr on <self:AAttrReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
 /* method parser_prod#AAttrReassignExpr#n_expr= for (self: Object, AExpr) */
 void VIRTUAL_parser_prod__AAttrReassignExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__AAttrReassignExpr__n_expr_61d(self, p0);
+parser_prod__AAttrReassignExpr__n_expr_61d(self, p0); /* Direct call parser_prod#AAttrReassignExpr#n_expr= on <self:Object(AAttrReassignExpr)>*/
 RET_LABEL:;
 }
 /* method parser_prod#AAttrReassignExpr#n_id= for (self: AAttrReassignExpr, TAttrid) */
 void parser_prod__AAttrReassignExpr__n_id_61d(val* self, val* p0) {
 val* var_node /* var node: TAttrid */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_node; /* _n_id on <self:AAttrReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TAttrid>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#n_id= for (self: Object, TAttrid) */
-void VIRTUAL_parser_prod__AAttrReassignExpr__n_id_61d(val* self, val* p0) {
-parser_prod__AAttrReassignExpr__n_id_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#n_assign_op= for (self: AAttrReassignExpr, AAssignOp) */
-void parser_prod__AAttrReassignExpr__n_assign_op_61d(val* self, val* p0) {
-val* var_node /* var node: AAssignOp */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val = var_node; /* _n_assign_op on <self:AAttrReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AAssignOp>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#n_assign_op= for (self: Object, AAssignOp) */
-void VIRTUAL_parser_prod__AAttrReassignExpr__n_assign_op_61d(val* self, val* p0) {
-parser_prod__AAttrReassignExpr__n_assign_op_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#n_value= for (self: AAttrReassignExpr, AExpr) */
-void parser_prod__AAttrReassignExpr__n_value_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val = var_node; /* _n_value on <self:AAttrReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#n_value= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__AAttrReassignExpr__n_value_61d(val* self, val* p0) {
-parser_prod__AAttrReassignExpr__n_value_61d(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#visit_all for (self: AAttrReassignExpr, Visitor) */
-void parser_prod__AAttrReassignExpr__visit_all(val* self, val* p0) {
-val* var_v /* var v: Visitor */;
-val* var /* : AExpr */;
-val* var1 /* : TAttrid */;
-val* var2 /* : AAssignOp */;
-val* var3 /* : AExpr */;
-var_v = p0;
-var = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val; /* _n_expr on <self:AAttrReassignExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7387);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrReassignExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7388);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-var2 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val; /* _n_assign_op on <self:AAttrReassignExpr> */
-if (var2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_assign_op");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7389);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var2) /* enter_visit on <var_v:Visitor>*/;
-var3 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val; /* _n_value on <self:AAttrReassignExpr> */
-if (var3 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_value");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7390);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var3) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
-}
-/* method parser_prod#AAttrReassignExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__AAttrReassignExpr__visit_all(val* self, val* p0) {
-parser_prod__AAttrReassignExpr__visit_all(self, p0);
-RET_LABEL:;
-}
-/* method parser_prod#ACallExpr#empty_init for (self: ACallExpr) */
-void parser_prod__ACallExpr__empty_init(val* self) {
-RET_LABEL:;
-}
-/* method parser_prod#ACallExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ACallExpr__empty_init(val* self) {
-parser_prod__ACallExpr__empty_init(self);
-RET_LABEL:;
-}
-/* method parser_prod#ACallExpr#init_acallexpr for (self: ACallExpr, nullable AExpr, nullable TId, nullable AExprs) */
-void parser_prod__ACallExpr__init_acallexpr(val* self, val* p0, val* p1, val* p2) {
-val* var_n_expr /* var n_expr: nullable AExpr */;
-val* var_n_id /* var n_id: nullable TId */;
-val* var_n_args /* var n_args: nullable AExprs */;
-var_n_expr = p0;
-var_n_id = p1;
-var_n_args = p2;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ACallExpr__empty_init]))(self) /* empty_init on <self:ACallExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7403);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ACallExpr> */
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7404);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
-}
-if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7405);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_n_id; /* _n_id on <self:ACallExpr> */
-if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7406);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_id->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_id, self) /* parent= on <var_n_id:nullable TId>*/;
-}
-if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7407);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_n_args; /* _n_args on <self:ACallExpr> */
-if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7408);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_args->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_args, self) /* parent= on <var_n_args:nullable AExprs>*/;
-}
-RET_LABEL:;
-}
-/* method parser_prod#ACallExpr#init_acallexpr for (self: Object, nullable AExpr, nullable TId, nullable AExprs) */
-void VIRTUAL_parser_prod__ACallExpr__init_acallexpr(val* self, val* p0, val* p1, val* p2) {
-parser_prod__ACallExpr__init_acallexpr(self, p0, p1, p2);
-RET_LABEL:;
-}
-/* method parser_prod#ACallExpr#replace_child for (self: ACallExpr, ANode, nullable ANode) */
-void parser_prod__ACallExpr__replace_child(val* self, val* p0, val* p1) {
-val* var_old_child /* var old_child: ANode */;
-val* var_new_child /* var new_child: nullable ANode */;
-val* var /* : AExpr */;
-short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var5 /* : TId */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : AExprs */;
-short int var13 /* : Bool */;
-val* var14 /* : null */;
-short int var15 /* : Bool */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-var_old_child = p0;
-var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7413);
-exit(1);
-}
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
-}
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype = type_parser_nodes__AExpr.color;
-idtype = type_parser_nodes__AExpr.id;
-if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7416);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ACallExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7419);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var5 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7423);
-exit(1);
-}
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:TId>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
-}
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TId */
-cltype10 = type_parser_nodes__TId.color;
-idtype11 = type_parser_nodes__TId.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7426);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_new_child; /* _n_id on <self:ACallExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7429);
-exit(1);
-}
-goto RET_LABEL;
-} else {
-}
-var12 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallExpr> */
-if (var12 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7433);
-exit(1);
-}
-var13 = ((short int (*)(val*, val*))(var12->class->vft[COLOR_kernel__Object___61d_61d]))(var12, var_old_child) /* == on <var12:AExprs>*/;
-if (var13){
-var14 = NULL;
-if (var_new_child == NULL) {
-var15 = 0; /* is null */
-} else {
-var15 = 1; /* arg is null and recv is not */
-}
-if (var15){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExprs */
-cltype17 = type_parser_nodes__AExprs.color;
-idtype18 = type_parser_nodes__AExprs.id;
-if(cltype17 >= var_new_child->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_new_child->type->type_table[cltype17] == idtype18;
-}
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7436);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_new_child; /* _n_args on <self:ACallExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7439);
-exit(1);
+var_node = p0;
+self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val = var_node; /* _n_id on <self:AAttrReassignExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TAttrid> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TAttrid> */
+RET_LABEL1:(void)0;
 }
-goto RET_LABEL;
-} else {
 }
 RET_LABEL:;
 }
-/* method parser_prod#ACallExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__ACallExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ACallExpr__replace_child(self, p0, p1);
+/* method parser_prod#AAttrReassignExpr#n_id= for (self: Object, TAttrid) */
+void VIRTUAL_parser_prod__AAttrReassignExpr__n_id_61d(val* self, val* p0) {
+parser_prod__AAttrReassignExpr__n_id_61d(self, p0); /* Direct call parser_prod#AAttrReassignExpr#n_id= on <self:Object(AAttrReassignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallExpr#n_expr= for (self: ACallExpr, AExpr) */
-void parser_prod__ACallExpr__n_expr_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
+/* method parser_prod#AAttrReassignExpr#n_assign_op= for (self: AAttrReassignExpr, AAssignOp) */
+void parser_prod__AAttrReassignExpr__n_assign_op_61d(val* self, val* p0) {
+val* var_node /* var node: AAssignOp */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ACallExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
-RET_LABEL:;
+self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val = var_node; /* _n_assign_op on <self:AAttrReassignExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AAssignOp> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AAssignOp> */
+RET_LABEL1:(void)0;
 }
-/* method parser_prod#ACallExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__ACallExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ACallExpr__n_expr_61d(self, p0);
-RET_LABEL:;
 }
-/* method parser_prod#ACallExpr#n_id= for (self: ACallExpr, TId) */
-void parser_prod__ACallExpr__n_id_61d(val* self, val* p0) {
-val* var_node /* var node: TId */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_node; /* _n_id on <self:ACallExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TId>*/;
 RET_LABEL:;
 }
-/* method parser_prod#ACallExpr#n_id= for (self: Object, TId) */
-void VIRTUAL_parser_prod__ACallExpr__n_id_61d(val* self, val* p0) {
-parser_prod__ACallExpr__n_id_61d(self, p0);
+/* method parser_prod#AAttrReassignExpr#n_assign_op= for (self: Object, AAssignOp) */
+void VIRTUAL_parser_prod__AAttrReassignExpr__n_assign_op_61d(val* self, val* p0) {
+parser_prod__AAttrReassignExpr__n_assign_op_61d(self, p0); /* Direct call parser_prod#AAttrReassignExpr#n_assign_op= on <self:Object(AAttrReassignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallExpr#n_args= for (self: ACallExpr, AExprs) */
-void parser_prod__ACallExpr__n_args_61d(val* self, val* p0) {
-val* var_node /* var node: AExprs */;
+/* method parser_prod#AAttrReassignExpr#n_value= for (self: AAttrReassignExpr, AExpr) */
+void parser_prod__AAttrReassignExpr__n_value_61d(val* self, val* p0) {
+val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_node; /* _n_args on <self:ACallExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExprs>*/;
+self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val = var_node; /* _n_value on <self:AAttrReassignExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ACallExpr#n_args= for (self: Object, AExprs) */
-void VIRTUAL_parser_prod__ACallExpr__n_args_61d(val* self, val* p0) {
-parser_prod__ACallExpr__n_args_61d(self, p0);
+/* method parser_prod#AAttrReassignExpr#n_value= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__AAttrReassignExpr__n_value_61d(val* self, val* p0) {
+parser_prod__AAttrReassignExpr__n_value_61d(self, p0); /* Direct call parser_prod#AAttrReassignExpr#n_value= on <self:Object(AAttrReassignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallExpr#visit_all for (self: ACallExpr, Visitor) */
-void parser_prod__ACallExpr__visit_all(val* self, val* p0) {
+/* method parser_prod#AAttrReassignExpr#visit_all for (self: AAttrReassignExpr, Visitor) */
+void parser_prod__AAttrReassignExpr__visit_all(val* self, val* p0) {
 val* var_v /* var v: Visitor */;
 val* var /* : AExpr */;
-val* var1 /* : TId */;
-val* var2 /* : AExprs */;
+val* var1 /* : TAttrid */;
+val* var2 /* : AAssignOp */;
+val* var3 /* : AExpr */;
 var_v = p0;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7464);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_expr].val; /* _n_expr on <self:AAttrReassignExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4186);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7465);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-var2 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallExpr> */
-if (var2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7466);
-exit(1);
+var1 = self->attrs[COLOR_parser_nodes__AAttrFormExpr___n_id].val; /* _n_id on <self:AAttrReassignExpr> */
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4187);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var2) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#ACallExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__ACallExpr__visit_all(val* self, val* p0) {
-parser_prod__ACallExpr__visit_all(self, p0);
-RET_LABEL:;
+var2 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val; /* _n_assign_op on <self:AAttrReassignExpr> */
+if (unlikely(var2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_assign_op");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4188);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var2); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
+}
+var3 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val; /* _n_value on <self:AAttrReassignExpr> */
+if (unlikely(var3 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_value");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4189);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var3); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#ACallAssignExpr#empty_init for (self: ACallAssignExpr) */
-void parser_prod__ACallAssignExpr__empty_init(val* self) {
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ACallAssignExpr__empty_init(val* self) {
-parser_prod__ACallAssignExpr__empty_init(self);
+/* method parser_prod#AAttrReassignExpr#visit_all for (self: Object, Visitor) */
+void VIRTUAL_parser_prod__AAttrReassignExpr__visit_all(val* self, val* p0) {
+parser_prod__AAttrReassignExpr__visit_all(self, p0); /* Direct call parser_prod#AAttrReassignExpr#visit_all on <self:Object(AAttrReassignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#init_acallassignexpr for (self: ACallAssignExpr, nullable AExpr, nullable TId, nullable AExprs, nullable TAssign, nullable AExpr) */
-void parser_prod__ACallAssignExpr__init_acallassignexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
+/* method parser_prod#ACallExpr#init_acallexpr for (self: ACallExpr, nullable AExpr, nullable TId, nullable AExprs) */
+void parser_prod__ACallExpr__init_acallexpr(val* self, val* p0, val* p1, val* p2) {
 val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_id /* var n_id: nullable TId */;
 val* var_n_args /* var n_args: nullable AExprs */;
-val* var_n_assign /* var n_assign: nullable TAssign */;
-val* var_n_value /* var n_value: nullable AExpr */;
 var_n_expr = p0;
 var_n_id = p1;
 var_n_args = p2;
-var_n_assign = p3;
-var_n_value = p4;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ACallAssignExpr__empty_init]))(self) /* empty_init on <self:ACallAssignExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7481);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4199);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ACallAssignExpr> */
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ACallExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7482);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4200);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7483);
-exit(1);
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_n_id; /* _n_id on <self:ACallAssignExpr> */
+}
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4201);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_n_id; /* _n_id on <self:ACallExpr> */
 if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7484);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4202);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_id->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_id, self) /* parent= on <var_n_id:nullable TId>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_id,self) on <var_n_id:nullable TId> */
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7485);
-exit(1);
+var_n_id->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_id:nullable TId> */
+RET_LABEL2:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_n_args; /* _n_args on <self:ACallAssignExpr> */
-if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7486);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_args->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_args, self) /* parent= on <var_n_args:nullable AExprs>*/;
 }
-if (var_n_assign == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7487);
-exit(1);
+if (unlikely(var_n_args == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4203);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val = var_n_assign; /* _n_assign on <self:ACallAssignExpr> */
-if (var_n_assign == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7488);
-exit(1);
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_n_args; /* _n_args on <self:ACallExpr> */
+if (var_n_args == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4204);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_assign->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_assign, self) /* parent= on <var_n_assign:nullable TAssign>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_args,self) on <var_n_args:nullable AExprs> */
+if (unlikely(var_n_args == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_value == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7489);
-exit(1);
+var_n_args->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_args:nullable AExprs> */
+RET_LABEL3:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val = var_n_value; /* _n_value on <self:ACallAssignExpr> */
-if (var_n_value == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7490);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_value->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_value, self) /* parent= on <var_n_value:nullable AExpr>*/;
 }
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#init_acallassignexpr for (self: Object, nullable AExpr, nullable TId, nullable AExprs, nullable TAssign, nullable AExpr) */
-void VIRTUAL_parser_prod__ACallAssignExpr__init_acallassignexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
-parser_prod__ACallAssignExpr__init_acallassignexpr(self, p0, p1, p2, p3, p4);
+/* method parser_prod#ACallExpr#init_acallexpr for (self: Object, nullable AExpr, nullable TId, nullable AExprs) */
+void VIRTUAL_parser_prod__ACallExpr__init_acallexpr(val* self, val* p0, val* p1, val* p2) {
+parser_prod__ACallExpr__init_acallexpr(self, p0, p1, p2); /* Direct call parser_prod#ACallExpr#init_acallexpr on <self:Object(ACallExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#replace_child for (self: ACallAssignExpr, ANode, nullable ANode) */
-void parser_prod__ACallAssignExpr__replace_child(val* self, val* p0, val* p1) {
+/* method parser_prod#ACallExpr#replace_child for (self: ACallExpr, ANode, nullable ANode) */
+void parser_prod__ACallExpr__replace_child(val* self, val* p0, val* p1) {
 val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : TId */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : TId */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : AExprs */;
-short int var13 /* : Bool */;
-val* var14 /* : null */;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
 short int var15 /* : Bool */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : TAssign */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
+val* var19 /* : AExprs */;
 short int var20 /* : Bool */;
-val* var21 /* : null */;
-short int var22 /* : Bool */;
+short int var21 /* : Bool */;
 short int var23 /* : Bool */;
-int cltype24;
-int idtype25;
-val* var26 /* : AExpr */;
-short int var27 /* : Bool */;
-val* var28 /* : null */;
-short int var29 /* : Bool */;
-short int var30 /* : Bool */;
-int cltype31;
-int idtype32;
+short int var25 /* : Bool */;
+short int var26 /* : Bool */;
+int cltype27;
+int idtype28;
+const char* var_class_name29;
 var_old_child = p0;
 var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallAssignExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7495);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4209);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7498);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ACallAssignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7501);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4210);
+show_backtrace(1);
+}
+{
+parser_prod__ACallExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#ACallExpr#n_expr= on <self:ACallExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallAssignExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7505);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4213);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:TId>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:TId> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:TId> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TId */
-cltype10 = type_parser_nodes__TId.color;
-idtype11 = type_parser_nodes__TId.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7508);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_new_child; /* _n_id on <self:ACallAssignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7511);
-exit(1);
+var9 = var10;
 }
-goto RET_LABEL;
+if (var9){
+/* <var_new_child:nullable ANode> isa TId */
+cltype16 = type_parser_nodes__TId.color;
+idtype17 = type_parser_nodes__TId.id;
+if(var_new_child == NULL) {
+var15 = 0;
 } else {
-}
-var12 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallAssignExpr> */
-if (var12 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7515);
-exit(1);
-}
-var13 = ((short int (*)(val*, val*))(var12->class->vft[COLOR_kernel__Object___61d_61d]))(var12, var_old_child) /* == on <var12:AExprs>*/;
-if (var13){
-var14 = NULL;
-if (var_new_child == NULL) {
-var15 = 0; /* is null */
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-var15 = 1; /* arg is null and recv is not */
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
 }
-if (var15){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExprs */
-cltype17 = type_parser_nodes__AExprs.color;
-idtype18 = type_parser_nodes__AExprs.id;
-if(cltype17 >= var_new_child->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_new_child->type->type_table[cltype17] == idtype18;
 }
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7518);
-exit(1);
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TId", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4214);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_new_child; /* _n_args on <self:ACallAssignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7521);
-exit(1);
+{
+parser_prod__ACallExpr__n_id_61d(self, var_new_child); /* Direct call parser_prod#ACallExpr#n_id= on <self:ACallExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var19 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val; /* _n_assign on <self:ACallAssignExpr> */
-if (var19 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_assign");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7525);
-exit(1);
+var19 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallExpr> */
+if (unlikely(var19 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_args");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4217);
+show_backtrace(1);
 }
-var20 = ((short int (*)(val*, val*))(var19->class->vft[COLOR_kernel__Object___61d_61d]))(var19, var_old_child) /* == on <var19:TAssign>*/;
-if (var20){
-var21 = NULL;
-if (var_new_child == NULL) {
-var22 = 0; /* is null */
-} else {
-var22 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var19,var_old_child) on <var19:AExprs> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var19,var_other) on <var19:AExprs> */
+var25 = var19 == var_other;
+var23 = var25;
+goto RET_LABEL24;
+RET_LABEL24:(void)0;
 }
-if (var22){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TAssign */
-cltype24 = type_parser_nodes__TAssign.color;
-idtype25 = type_parser_nodes__TAssign.id;
-if(cltype24 >= var_new_child->type->table_size) {
-var23 = 0;
-} else {
-var23 = var_new_child->type->type_table[cltype24] == idtype25;
 }
-if (!var23) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7528);
-exit(1);
+var21 = var23;
+goto RET_LABEL22;
+RET_LABEL22:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val = var_new_child; /* _n_assign on <self:ACallAssignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7531);
-exit(1);
+var20 = var21;
 }
-goto RET_LABEL;
+if (var20){
+/* <var_new_child:nullable ANode> isa AExprs */
+cltype27 = type_parser_nodes__AExprs.color;
+idtype28 = type_parser_nodes__AExprs.id;
+if(var_new_child == NULL) {
+var26 = 0;
 } else {
-}
-var26 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val; /* _n_value on <self:ACallAssignExpr> */
-if (var26 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_value");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7535);
-exit(1);
-}
-var27 = ((short int (*)(val*, val*))(var26->class->vft[COLOR_kernel__Object___61d_61d]))(var26, var_old_child) /* == on <var26:AExpr>*/;
-if (var27){
-var28 = NULL;
-if (var_new_child == NULL) {
-var29 = 0; /* is null */
+if(cltype27 >= var_new_child->type->table_size) {
+var26 = 0;
 } else {
-var29 = 1; /* arg is null and recv is not */
+var26 = var_new_child->type->type_table[cltype27] == idtype28;
 }
-if (var29){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype31 = type_parser_nodes__AExpr.color;
-idtype32 = type_parser_nodes__AExpr.id;
-if(cltype31 >= var_new_child->type->table_size) {
-var30 = 0;
-} else {
-var30 = var_new_child->type->type_table[cltype31] == idtype32;
 }
-if (!var30) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7538);
-exit(1);
+if (unlikely(!var26)) {
+var_class_name29 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExprs", var_class_name29);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4218);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val = var_new_child; /* _n_value on <self:ACallAssignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7541);
-exit(1);
+{
+parser_prod__ACallExpr__n_args_61d(self, var_new_child); /* Direct call parser_prod#ACallExpr#n_args= on <self:ACallExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__ACallAssignExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ACallAssignExpr__replace_child(self, p0, p1);
+/* method parser_prod#ACallExpr#replace_child for (self: Object, ANode, nullable ANode) */
+void VIRTUAL_parser_prod__ACallExpr__replace_child(val* self, val* p0, val* p1) {
+parser_prod__ACallExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ACallExpr#replace_child on <self:Object(ACallExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#n_expr= for (self: ACallAssignExpr, AExpr) */
-void parser_prod__ACallAssignExpr__n_expr_61d(val* self, val* p0) {
+/* method parser_prod#ACallExpr#n_expr= for (self: ACallExpr, AExpr) */
+void parser_prod__ACallExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ACallAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ACallExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__ACallAssignExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ACallAssignExpr__n_expr_61d(self, p0);
+/* method parser_prod#ACallExpr#n_expr= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__ACallExpr__n_expr_61d(val* self, val* p0) {
+parser_prod__ACallExpr__n_expr_61d(self, p0); /* Direct call parser_prod#ACallExpr#n_expr= on <self:Object(ACallExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#n_id= for (self: ACallAssignExpr, TId) */
-void parser_prod__ACallAssignExpr__n_id_61d(val* self, val* p0) {
+/* method parser_prod#ACallExpr#n_id= for (self: ACallExpr, TId) */
+void parser_prod__ACallExpr__n_id_61d(val* self, val* p0) {
 val* var_node /* var node: TId */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_node; /* _n_id on <self:ACallAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TId>*/;
-RET_LABEL:;
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_node; /* _n_id on <self:ACallExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TId> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TId> */
+RET_LABEL1:(void)0;
 }
-/* method parser_prod#ACallAssignExpr#n_id= for (self: Object, TId) */
-void VIRTUAL_parser_prod__ACallAssignExpr__n_id_61d(val* self, val* p0) {
-parser_prod__ACallAssignExpr__n_id_61d(self, p0);
-RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#n_args= for (self: ACallAssignExpr, AExprs) */
-void parser_prod__ACallAssignExpr__n_args_61d(val* self, val* p0) {
-val* var_node /* var node: AExprs */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_node; /* _n_args on <self:ACallAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExprs>*/;
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#n_args= for (self: Object, AExprs) */
-void VIRTUAL_parser_prod__ACallAssignExpr__n_args_61d(val* self, val* p0) {
-parser_prod__ACallAssignExpr__n_args_61d(self, p0);
+/* method parser_prod#ACallExpr#n_id= for (self: Object, TId) */
+void VIRTUAL_parser_prod__ACallExpr__n_id_61d(val* self, val* p0) {
+parser_prod__ACallExpr__n_id_61d(self, p0); /* Direct call parser_prod#ACallExpr#n_id= on <self:Object(ACallExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#n_assign= for (self: ACallAssignExpr, TAssign) */
-void parser_prod__ACallAssignExpr__n_assign_61d(val* self, val* p0) {
-val* var_node /* var node: TAssign */;
+/* method parser_prod#ACallExpr#n_args= for (self: ACallExpr, AExprs) */
+void parser_prod__ACallExpr__n_args_61d(val* self, val* p0) {
+val* var_node /* var node: AExprs */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val = var_node; /* _n_assign on <self:ACallAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TAssign>*/;
-RET_LABEL:;
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_node; /* _n_args on <self:ACallExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExprs> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExprs> */
+RET_LABEL1:(void)0;
 }
-/* method parser_prod#ACallAssignExpr#n_assign= for (self: Object, TAssign) */
-void VIRTUAL_parser_prod__ACallAssignExpr__n_assign_61d(val* self, val* p0) {
-parser_prod__ACallAssignExpr__n_assign_61d(self, p0);
-RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#n_value= for (self: ACallAssignExpr, AExpr) */
-void parser_prod__ACallAssignExpr__n_value_61d(val* self, val* p0) {
-val* var_node /* var node: AExpr */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val = var_node; /* _n_value on <self:ACallAssignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#n_value= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__ACallAssignExpr__n_value_61d(val* self, val* p0) {
-parser_prod__ACallAssignExpr__n_value_61d(self, p0);
+/* method parser_prod#ACallExpr#n_args= for (self: Object, AExprs) */
+void VIRTUAL_parser_prod__ACallExpr__n_args_61d(val* self, val* p0) {
+parser_prod__ACallExpr__n_args_61d(self, p0); /* Direct call parser_prod#ACallExpr#n_args= on <self:Object(ACallExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallAssignExpr#visit_all for (self: ACallAssignExpr, Visitor) */
-void parser_prod__ACallAssignExpr__visit_all(val* self, val* p0) {
+/* method parser_prod#ACallExpr#visit_all for (self: ACallExpr, Visitor) */
+void parser_prod__ACallExpr__visit_all(val* self, val* p0) {
 val* var_v /* var v: Visitor */;
 val* var /* : AExpr */;
 val* var1 /* : TId */;
 val* var2 /* : AExprs */;
-val* var3 /* : TAssign */;
-val* var4 /* : AExpr */;
 var_v = p0;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallAssignExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7576);
-exit(1);
-}
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallAssignExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7577);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4242);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-var2 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallAssignExpr> */
-if (var2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7578);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var2) /* enter_visit on <var_v:Visitor>*/;
-var3 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val; /* _n_assign on <self:ACallAssignExpr> */
-if (var3 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_assign");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7579);
-exit(1);
+var1 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallExpr> */
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4243);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var3) /* enter_visit on <var_v:Visitor>*/;
-var4 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val; /* _n_value on <self:ACallAssignExpr> */
-if (var4 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_value");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7580);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var4) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
+var2 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallExpr> */
+if (unlikely(var2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_args");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4244);
+show_backtrace(1);
 }
-/* method parser_prod#ACallAssignExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__ACallAssignExpr__visit_all(val* self, val* p0) {
-parser_prod__ACallAssignExpr__visit_all(self, p0);
-RET_LABEL:;
+{
+parser_nodes__Visitor__enter_visit(var_v, var2); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#ACallReassignExpr#empty_init for (self: ACallReassignExpr) */
-void parser_prod__ACallReassignExpr__empty_init(val* self) {
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ACallReassignExpr__empty_init(val* self) {
-parser_prod__ACallReassignExpr__empty_init(self);
+/* method parser_prod#ACallExpr#visit_all for (self: Object, Visitor) */
+void VIRTUAL_parser_prod__ACallExpr__visit_all(val* self, val* p0) {
+parser_prod__ACallExpr__visit_all(self, p0); /* Direct call parser_prod#ACallExpr#visit_all on <self:Object(ACallExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#init_acallreassignexpr for (self: ACallReassignExpr, nullable AExpr, nullable TId, nullable AExprs, nullable AAssignOp, nullable AExpr) */
-void parser_prod__ACallReassignExpr__init_acallreassignexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
+/* method parser_prod#ACallAssignExpr#init_acallassignexpr for (self: ACallAssignExpr, nullable AExpr, nullable TId, nullable AExprs, nullable TAssign, nullable AExpr) */
+void parser_prod__ACallAssignExpr__init_acallassignexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
 val* var_n_expr /* var n_expr: nullable AExpr */;
 val* var_n_id /* var n_id: nullable TId */;
 val* var_n_args /* var n_args: nullable AExprs */;
-val* var_n_assign_op /* var n_assign_op: nullable AAssignOp */;
+val* var_n_assign /* var n_assign: nullable TAssign */;
 val* var_n_value /* var n_value: nullable AExpr */;
 var_n_expr = p0;
 var_n_id = p1;
 var_n_args = p2;
-var_n_assign_op = p3;
+var_n_assign = p3;
 var_n_value = p4;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ACallReassignExpr__empty_init]))(self) /* empty_init on <self:ACallReassignExpr>*/;
-if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7595);
-exit(1);
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4256);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ACallReassignExpr> */
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ACallAssignExpr> */
 if (var_n_expr == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7596);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4257);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_expr->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_expr, self) /* parent= on <var_n_expr:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
+}
 }
-if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7597);
-exit(1);
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4258);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_n_id; /* _n_id on <self:ACallReassignExpr> */
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_n_id; /* _n_id on <self:ACallAssignExpr> */
 if (var_n_id == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7598);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4259);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_id->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_id, self) /* parent= on <var_n_id:nullable TId>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_id,self) on <var_n_id:nullable TId> */
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7599);
-exit(1);
+var_n_id->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_id:nullable TId> */
+RET_LABEL2:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_n_args; /* _n_args on <self:ACallReassignExpr> */
+}
+if (unlikely(var_n_args == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4260);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_n_args; /* _n_args on <self:ACallAssignExpr> */
 if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7600);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4261);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_args->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_args, self) /* parent= on <var_n_args:nullable AExprs>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_args,self) on <var_n_args:nullable AExprs> */
+if (unlikely(var_n_args == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_assign_op == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7601);
-exit(1);
+var_n_args->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_args:nullable AExprs> */
+RET_LABEL3:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val = var_n_assign_op; /* _n_assign_op on <self:ACallReassignExpr> */
-if (var_n_assign_op == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7602);
-exit(1);
+}
+if (unlikely(var_n_assign == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4262);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val = var_n_assign; /* _n_assign on <self:ACallAssignExpr> */
+if (var_n_assign == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4263);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_assign_op->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_assign_op, self) /* parent= on <var_n_assign_op:nullable AAssignOp>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_assign,self) on <var_n_assign:nullable TAssign> */
+if (unlikely(var_n_assign == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var_n_value == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7603);
-exit(1);
+var_n_assign->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_assign:nullable TAssign> */
+RET_LABEL4:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val = var_n_value; /* _n_value on <self:ACallReassignExpr> */
+}
+if (unlikely(var_n_value == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4264);
+show_backtrace(1);
+}
+self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val = var_n_value; /* _n_value on <self:ACallAssignExpr> */
 if (var_n_value == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7604);
-exit(1);
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4265);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_value->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_value, self) /* parent= on <var_n_value:nullable AExpr>*/;
+{ /* Inline parser_nodes#ANode#parent= (var_n_value,self) on <var_n_value:nullable AExpr> */
+if (unlikely(var_n_value == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
+}
+var_n_value->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_value:nullable AExpr> */
+RET_LABEL5:(void)0;
+}
 }
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#init_acallreassignexpr for (self: Object, nullable AExpr, nullable TId, nullable AExprs, nullable AAssignOp, nullable AExpr) */
-void VIRTUAL_parser_prod__ACallReassignExpr__init_acallreassignexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
-parser_prod__ACallReassignExpr__init_acallreassignexpr(self, p0, p1, p2, p3, p4);
+/* method parser_prod#ACallAssignExpr#init_acallassignexpr for (self: Object, nullable AExpr, nullable TId, nullable AExprs, nullable TAssign, nullable AExpr) */
+void VIRTUAL_parser_prod__ACallAssignExpr__init_acallassignexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
+parser_prod__ACallAssignExpr__init_acallassignexpr(self, p0, p1, p2, p3, p4); /* Direct call parser_prod#ACallAssignExpr#init_acallassignexpr on <self:Object(ACallAssignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#replace_child for (self: ACallReassignExpr, ANode, nullable ANode) */
-void parser_prod__ACallReassignExpr__replace_child(val* self, val* p0, val* p1) {
+/* method parser_prod#ACallAssignExpr#replace_child for (self: ACallAssignExpr, ANode, nullable ANode) */
+void parser_prod__ACallAssignExpr__replace_child(val* self, val* p0, val* p1) {
 val* var_old_child /* var old_child: ANode */;
 val* var_new_child /* var new_child: nullable ANode */;
 val* var /* : AExpr */;
 short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
+short int var2 /* : Bool */;
+val* var_other /* var other: nullable Object */;
 short int var4 /* : Bool */;
+short int var6 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var5 /* : TId */;
-short int var6 /* : Bool */;
-val* var7 /* : null */;
-short int var8 /* : Bool */;
+const char* var_class_name;
+val* var8 /* : TId */;
 short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : AExprs */;
-short int var13 /* : Bool */;
-val* var14 /* : null */;
+short int var10 /* : Bool */;
+short int var12 /* : Bool */;
+short int var14 /* : Bool */;
 short int var15 /* : Bool */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : AAssignOp */;
+int cltype16;
+int idtype17;
+const char* var_class_name18;
+val* var19 /* : AExprs */;
 short int var20 /* : Bool */;
-val* var21 /* : null */;
-short int var22 /* : Bool */;
+short int var21 /* : Bool */;
 short int var23 /* : Bool */;
-int cltype24;
-int idtype25;
-val* var26 /* : AExpr */;
-short int var27 /* : Bool */;
-val* var28 /* : null */;
-short int var29 /* : Bool */;
-short int var30 /* : Bool */;
-int cltype31;
-int idtype32;
+short int var25 /* : Bool */;
+short int var26 /* : Bool */;
+int cltype27;
+int idtype28;
+const char* var_class_name29;
+val* var30 /* : TAssign */;
+short int var31 /* : Bool */;
+short int var32 /* : Bool */;
+short int var34 /* : Bool */;
+short int var36 /* : Bool */;
+short int var37 /* : Bool */;
+int cltype38;
+int idtype39;
+const char* var_class_name40;
+val* var41 /* : AExpr */;
+short int var42 /* : Bool */;
+short int var43 /* : Bool */;
+short int var45 /* : Bool */;
+short int var47 /* : Bool */;
+short int var48 /* : Bool */;
+int cltype49;
+int idtype50;
+const char* var_class_name51;
 var_old_child = p0;
 var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallReassignExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7609);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallAssignExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4270);
+show_backtrace(1);
 }
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:AExpr>*/;
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var,var_old_child) on <var:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var,var_other) on <var:AExpr> */
+var6 = var == var_other;
+var4 = var6;
+goto RET_LABEL5;
+RET_LABEL5:(void)0;
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
+}
+var2 = var4;
+goto RET_LABEL3;
+RET_LABEL3:(void)0;
+}
+var1 = var2;
+}
+if (var1){
+/* <var_new_child:nullable ANode> isa AExpr */
 cltype = type_parser_nodes__AExpr.color;
 idtype = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var7 = 0;
+} else {
 if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+var7 = 0;
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
+var7 = var_new_child->type->type_table[cltype] == idtype;
 }
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7612);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_new_child; /* _n_expr on <self:ACallReassignExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7615);
-exit(1);
+if (unlikely(!var7)) {
+var_class_name = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4271);
+show_backtrace(1);
+}
+{
+parser_prod__ACallAssignExpr__n_expr_61d(self, var_new_child); /* Direct call parser_prod#ACallAssignExpr#n_expr= on <self:ACallAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var5 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallReassignExpr> */
-if (var5 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7619);
-exit(1);
+var8 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallAssignExpr> */
+if (unlikely(var8 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4274);
+show_backtrace(1);
 }
-var6 = ((short int (*)(val*, val*))(var5->class->vft[COLOR_kernel__Object___61d_61d]))(var5, var_old_child) /* == on <var5:TId>*/;
-if (var6){
-var7 = NULL;
-if (var_new_child == NULL) {
-var8 = 0; /* is null */
-} else {
-var8 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var8,var_old_child) on <var8:TId> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var8,var_other) on <var8:TId> */
+var14 = var8 == var_other;
+var12 = var14;
+goto RET_LABEL13;
+RET_LABEL13:(void)0;
 }
-if (var8){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TId */
-cltype10 = type_parser_nodes__TId.color;
-idtype11 = type_parser_nodes__TId.id;
-if(cltype10 >= var_new_child->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_new_child->type->type_table[cltype10] == idtype11;
 }
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7622);
-exit(1);
+var10 = var12;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_new_child; /* _n_id on <self:ACallReassignExpr> */
+if (var9){
+/* <var_new_child:nullable ANode> isa TId */
+cltype16 = type_parser_nodes__TId.color;
+idtype17 = type_parser_nodes__TId.id;
+if(var_new_child == NULL) {
+var15 = 0;
+} else {
+if(cltype16 >= var_new_child->type->table_size) {
+var15 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7625);
-exit(1);
+var15 = var_new_child->type->type_table[cltype16] == idtype17;
+}
+}
+if (unlikely(!var15)) {
+var_class_name18 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TId", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4275);
+show_backtrace(1);
+}
+{
+parser_prod__ACallAssignExpr__n_id_61d(self, var_new_child); /* Direct call parser_prod#ACallAssignExpr#n_id= on <self:ACallAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var12 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallReassignExpr> */
-if (var12 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7629);
-exit(1);
+var19 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallAssignExpr> */
+if (unlikely(var19 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_args");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4278);
+show_backtrace(1);
 }
-var13 = ((short int (*)(val*, val*))(var12->class->vft[COLOR_kernel__Object___61d_61d]))(var12, var_old_child) /* == on <var12:AExprs>*/;
-if (var13){
-var14 = NULL;
-if (var_new_child == NULL) {
-var15 = 0; /* is null */
-} else {
-var15 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var19,var_old_child) on <var19:AExprs> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var19,var_other) on <var19:AExprs> */
+var25 = var19 == var_other;
+var23 = var25;
+goto RET_LABEL24;
+RET_LABEL24:(void)0;
 }
-if (var15){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExprs */
-cltype17 = type_parser_nodes__AExprs.color;
-idtype18 = type_parser_nodes__AExprs.id;
-if(cltype17 >= var_new_child->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_new_child->type->type_table[cltype17] == idtype18;
 }
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7632);
-exit(1);
+var21 = var23;
+goto RET_LABEL22;
+RET_LABEL22:(void)0;
 }
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_new_child; /* _n_args on <self:ACallReassignExpr> */
+var20 = var21;
+}
+if (var20){
+/* <var_new_child:nullable ANode> isa AExprs */
+cltype27 = type_parser_nodes__AExprs.color;
+idtype28 = type_parser_nodes__AExprs.id;
+if(var_new_child == NULL) {
+var26 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7635);
-exit(1);
+if(cltype27 >= var_new_child->type->table_size) {
+var26 = 0;
+} else {
+var26 = var_new_child->type->type_table[cltype27] == idtype28;
+}
+}
+if (unlikely(!var26)) {
+var_class_name29 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExprs", var_class_name29);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4279);
+show_backtrace(1);
+}
+{
+parser_prod__ACallAssignExpr__n_args_61d(self, var_new_child); /* Direct call parser_prod#ACallAssignExpr#n_args= on <self:ACallAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var19 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val; /* _n_assign_op on <self:ACallReassignExpr> */
-if (var19 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_assign_op");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7639);
-exit(1);
+var30 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val; /* _n_assign on <self:ACallAssignExpr> */
+if (unlikely(var30 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_assign");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4282);
+show_backtrace(1);
 }
-var20 = ((short int (*)(val*, val*))(var19->class->vft[COLOR_kernel__Object___61d_61d]))(var19, var_old_child) /* == on <var19:AAssignOp>*/;
-if (var20){
-var21 = NULL;
-if (var_new_child == NULL) {
-var22 = 0; /* is null */
-} else {
-var22 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var30,var_old_child) on <var30:TAssign> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var30,var_other) on <var30:TAssign> */
+var36 = var30 == var_other;
+var34 = var36;
+goto RET_LABEL35;
+RET_LABEL35:(void)0;
 }
-if (var22){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AAssignOp */
-cltype24 = type_parser_nodes__AAssignOp.color;
-idtype25 = type_parser_nodes__AAssignOp.id;
-if(cltype24 >= var_new_child->type->table_size) {
-var23 = 0;
-} else {
-var23 = var_new_child->type->type_table[cltype24] == idtype25;
 }
-if (!var23) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7642);
-exit(1);
+var32 = var34;
+goto RET_LABEL33;
+RET_LABEL33:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val = var_new_child; /* _n_assign_op on <self:ACallReassignExpr> */
+var31 = var32;
+}
+if (var31){
+/* <var_new_child:nullable ANode> isa TAssign */
+cltype38 = type_parser_nodes__TAssign.color;
+idtype39 = type_parser_nodes__TAssign.id;
+if(var_new_child == NULL) {
+var37 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7645);
-exit(1);
+if(cltype38 >= var_new_child->type->table_size) {
+var37 = 0;
+} else {
+var37 = var_new_child->type->type_table[cltype38] == idtype39;
+}
+}
+if (unlikely(!var37)) {
+var_class_name40 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "TAssign", var_class_name40);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4283);
+show_backtrace(1);
+}
+{
+parser_prod__ACallAssignExpr__n_assign_61d(self, var_new_child); /* Direct call parser_prod#ACallAssignExpr#n_assign= on <self:ACallAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
-var26 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val; /* _n_value on <self:ACallReassignExpr> */
-if (var26 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_value");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7649);
-exit(1);
+var41 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val; /* _n_value on <self:ACallAssignExpr> */
+if (unlikely(var41 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_value");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4286);
+show_backtrace(1);
 }
-var27 = ((short int (*)(val*, val*))(var26->class->vft[COLOR_kernel__Object___61d_61d]))(var26, var_old_child) /* == on <var26:AExpr>*/;
-if (var27){
-var28 = NULL;
-if (var_new_child == NULL) {
-var29 = 0; /* is null */
-} else {
-var29 = 1; /* arg is null and recv is not */
+{
+{ /* Inline kernel#Object#== (var41,var_old_child) on <var41:AExpr> */
+var_other = var_old_child;
+{
+{ /* Inline kernel#Object#is_same_instance (var41,var_other) on <var41:AExpr> */
+var47 = var41 == var_other;
+var45 = var47;
+goto RET_LABEL46;
+RET_LABEL46:(void)0;
 }
-if (var29){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExpr */
-cltype31 = type_parser_nodes__AExpr.color;
-idtype32 = type_parser_nodes__AExpr.id;
-if(cltype31 >= var_new_child->type->table_size) {
-var30 = 0;
-} else {
-var30 = var_new_child->type->type_table[cltype31] == idtype32;
 }
-if (!var30) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7652);
-exit(1);
+var43 = var45;
+goto RET_LABEL44;
+RET_LABEL44:(void)0;
 }
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val = var_new_child; /* _n_value on <self:ACallReassignExpr> */
+var42 = var43;
+}
+if (var42){
+/* <var_new_child:nullable ANode> isa AExpr */
+cltype49 = type_parser_nodes__AExpr.color;
+idtype50 = type_parser_nodes__AExpr.id;
+if(var_new_child == NULL) {
+var48 = 0;
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7655);
-exit(1);
+if(cltype49 >= var_new_child->type->table_size) {
+var48 = 0;
+} else {
+var48 = var_new_child->type->type_table[cltype49] == idtype50;
+}
+}
+if (unlikely(!var48)) {
+var_class_name51 = var_new_child == NULL ? "null" : var_new_child->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "AExpr", var_class_name51);
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4287);
+show_backtrace(1);
+}
+{
+parser_prod__ACallAssignExpr__n_value_61d(self, var_new_child); /* Direct call parser_prod#ACallAssignExpr#n_value= on <self:ACallAssignExpr>*/
 }
 goto RET_LABEL;
 } else {
 }
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__ACallReassignExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ACallReassignExpr__replace_child(self, p0, p1);
+/* method parser_prod#ACallAssignExpr#replace_child for (self: Object, ANode, nullable ANode) */
+void VIRTUAL_parser_prod__ACallAssignExpr__replace_child(val* self, val* p0, val* p1) {
+parser_prod__ACallAssignExpr__replace_child(self, p0, p1); /* Direct call parser_prod#ACallAssignExpr#replace_child on <self:Object(ACallAssignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_expr= for (self: ACallReassignExpr, AExpr) */
-void parser_prod__ACallReassignExpr__n_expr_61d(val* self, val* p0) {
+/* method parser_prod#ACallAssignExpr#n_expr= for (self: ACallAssignExpr, AExpr) */
+void parser_prod__ACallAssignExpr__n_expr_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ACallReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_node; /* _n_expr on <self:ACallAssignExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_expr= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__ACallReassignExpr__n_expr_61d(val* self, val* p0) {
-parser_prod__ACallReassignExpr__n_expr_61d(self, p0);
+/* method parser_prod#ACallAssignExpr#n_expr= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__ACallAssignExpr__n_expr_61d(val* self, val* p0) {
+parser_prod__ACallAssignExpr__n_expr_61d(self, p0); /* Direct call parser_prod#ACallAssignExpr#n_expr= on <self:Object(ACallAssignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_id= for (self: ACallReassignExpr, TId) */
-void parser_prod__ACallReassignExpr__n_id_61d(val* self, val* p0) {
+/* method parser_prod#ACallAssignExpr#n_id= for (self: ACallAssignExpr, TId) */
+void parser_prod__ACallAssignExpr__n_id_61d(val* self, val* p0) {
 val* var_node /* var node: TId */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_node; /* _n_id on <self:ACallReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:TId>*/;
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_node; /* _n_id on <self:ACallAssignExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TId> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TId> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_id= for (self: Object, TId) */
-void VIRTUAL_parser_prod__ACallReassignExpr__n_id_61d(val* self, val* p0) {
-parser_prod__ACallReassignExpr__n_id_61d(self, p0);
+/* method parser_prod#ACallAssignExpr#n_id= for (self: Object, TId) */
+void VIRTUAL_parser_prod__ACallAssignExpr__n_id_61d(val* self, val* p0) {
+parser_prod__ACallAssignExpr__n_id_61d(self, p0); /* Direct call parser_prod#ACallAssignExpr#n_id= on <self:Object(ACallAssignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_args= for (self: ACallReassignExpr, AExprs) */
-void parser_prod__ACallReassignExpr__n_args_61d(val* self, val* p0) {
+/* method parser_prod#ACallAssignExpr#n_args= for (self: ACallAssignExpr, AExprs) */
+void parser_prod__ACallAssignExpr__n_args_61d(val* self, val* p0) {
 val* var_node /* var node: AExprs */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_node; /* _n_args on <self:ACallReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExprs>*/;
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_node; /* _n_args on <self:ACallAssignExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExprs> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExprs> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_args= for (self: Object, AExprs) */
-void VIRTUAL_parser_prod__ACallReassignExpr__n_args_61d(val* self, val* p0) {
-parser_prod__ACallReassignExpr__n_args_61d(self, p0);
+/* method parser_prod#ACallAssignExpr#n_args= for (self: Object, AExprs) */
+void VIRTUAL_parser_prod__ACallAssignExpr__n_args_61d(val* self, val* p0) {
+parser_prod__ACallAssignExpr__n_args_61d(self, p0); /* Direct call parser_prod#ACallAssignExpr#n_args= on <self:Object(ACallAssignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_assign_op= for (self: ACallReassignExpr, AAssignOp) */
-void parser_prod__ACallReassignExpr__n_assign_op_61d(val* self, val* p0) {
-val* var_node /* var node: AAssignOp */;
+/* method parser_prod#ACallAssignExpr#n_assign= for (self: ACallAssignExpr, TAssign) */
+void parser_prod__ACallAssignExpr__n_assign_61d(val* self, val* p0) {
+val* var_node /* var node: TAssign */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val = var_node; /* _n_assign_op on <self:ACallReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AAssignOp>*/;
+self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val = var_node; /* _n_assign on <self:ACallAssignExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:TAssign> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:TAssign> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_assign_op= for (self: Object, AAssignOp) */
-void VIRTUAL_parser_prod__ACallReassignExpr__n_assign_op_61d(val* self, val* p0) {
-parser_prod__ACallReassignExpr__n_assign_op_61d(self, p0);
+/* method parser_prod#ACallAssignExpr#n_assign= for (self: Object, TAssign) */
+void VIRTUAL_parser_prod__ACallAssignExpr__n_assign_61d(val* self, val* p0) {
+parser_prod__ACallAssignExpr__n_assign_61d(self, p0); /* Direct call parser_prod#ACallAssignExpr#n_assign= on <self:Object(ACallAssignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_value= for (self: ACallReassignExpr, AExpr) */
-void parser_prod__ACallReassignExpr__n_value_61d(val* self, val* p0) {
+/* method parser_prod#ACallAssignExpr#n_value= for (self: ACallAssignExpr, AExpr) */
+void parser_prod__ACallAssignExpr__n_value_61d(val* self, val* p0) {
 val* var_node /* var node: AExpr */;
 var_node = p0;
-self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val = var_node; /* _n_value on <self:ACallReassignExpr> */
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:AExpr>*/;
+self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val = var_node; /* _n_value on <self:ACallAssignExpr> */
+{
+{ /* Inline parser_nodes#ANode#parent= (var_node,self) on <var_node:AExpr> */
+var_node->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_node:AExpr> */
+RET_LABEL1:(void)0;
+}
+}
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#n_value= for (self: Object, AExpr) */
-void VIRTUAL_parser_prod__ACallReassignExpr__n_value_61d(val* self, val* p0) {
-parser_prod__ACallReassignExpr__n_value_61d(self, p0);
+/* method parser_prod#ACallAssignExpr#n_value= for (self: Object, AExpr) */
+void VIRTUAL_parser_prod__ACallAssignExpr__n_value_61d(val* self, val* p0) {
+parser_prod__ACallAssignExpr__n_value_61d(self, p0); /* Direct call parser_prod#ACallAssignExpr#n_value= on <self:Object(ACallAssignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ACallReassignExpr#visit_all for (self: ACallReassignExpr, Visitor) */
-void parser_prod__ACallReassignExpr__visit_all(val* self, val* p0) {
+/* method parser_prod#ACallAssignExpr#visit_all for (self: ACallAssignExpr, Visitor) */
+void parser_prod__ACallAssignExpr__visit_all(val* self, val* p0) {
 val* var_v /* var v: Visitor */;
 val* var /* : AExpr */;
 val* var1 /* : TId */;
 val* var2 /* : AExprs */;
-val* var3 /* : AAssignOp */;
+val* var3 /* : TAssign */;
 val* var4 /* : AExpr */;
 var_v = p0;
-var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallReassignExpr> */
-if (var == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_expr");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7690);
-exit(1);
+var = self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val; /* _n_expr on <self:ACallAssignExpr> */
+if (unlikely(var == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_expr");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4321);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var) /* enter_visit on <var_v:Visitor>*/;
-var1 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallReassignExpr> */
-if (var1 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_id");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7691);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var1) /* enter_visit on <var_v:Visitor>*/;
-var2 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallReassignExpr> */
-if (var2 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7692);
-exit(1);
+var1 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val; /* _n_id on <self:ACallAssignExpr> */
+if (unlikely(var1 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_id");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4322);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var2) /* enter_visit on <var_v:Visitor>*/;
-var3 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val; /* _n_assign_op on <self:ACallReassignExpr> */
-if (var3 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_assign_op");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7693);
-exit(1);
+{
+parser_nodes__Visitor__enter_visit(var_v, var1); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var3) /* enter_visit on <var_v:Visitor>*/;
-var4 = self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val; /* _n_value on <self:ACallReassignExpr> */
-if (var4 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_value");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7694);
-exit(1);
+var2 = self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val; /* _n_args on <self:ACallAssignExpr> */
+if (unlikely(var2 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_args");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4323);
+show_backtrace(1);
 }
-((void (*)(val*, val*))(var_v->class->vft[COLOR_parser_nodes__Visitor__enter_visit]))(var_v, var4) /* enter_visit on <var_v:Visitor>*/;
-RET_LABEL:;
+{
+parser_nodes__Visitor__enter_visit(var_v, var2); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#ACallReassignExpr#visit_all for (self: Object, Visitor) */
-void VIRTUAL_parser_prod__ACallReassignExpr__visit_all(val* self, val* p0) {
-parser_prod__ACallReassignExpr__visit_all(self, p0);
-RET_LABEL:;
+var3 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_assign].val; /* _n_assign on <self:ACallAssignExpr> */
+if (unlikely(var3 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_assign");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4324);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var3); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
+}
+var4 = self->attrs[COLOR_parser_nodes__AAssignFormExpr___n_value].val; /* _n_value on <self:ACallAssignExpr> */
+if (unlikely(var4 == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _n_value");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4325);
+show_backtrace(1);
+}
+{
+parser_nodes__Visitor__enter_visit(var_v, var4); /* Direct call parser_nodes#Visitor#enter_visit on <var_v:Visitor>*/
 }
-/* method parser_prod#ASuperExpr#empty_init for (self: ASuperExpr) */
-void parser_prod__ASuperExpr__empty_init(val* self) {
 RET_LABEL:;
 }
-/* method parser_prod#ASuperExpr#empty_init for (self: Object) */
-void VIRTUAL_parser_prod__ASuperExpr__empty_init(val* self) {
-parser_prod__ASuperExpr__empty_init(self);
+/* method parser_prod#ACallAssignExpr#visit_all for (self: Object, Visitor) */
+void VIRTUAL_parser_prod__ACallAssignExpr__visit_all(val* self, val* p0) {
+parser_prod__ACallAssignExpr__visit_all(self, p0); /* Direct call parser_prod#ACallAssignExpr#visit_all on <self:Object(ACallAssignExpr)>*/
 RET_LABEL:;
 }
-/* method parser_prod#ASuperExpr#init_asuperexpr for (self: ASuperExpr, nullable AQualified, nullable TKwsuper, nullable AExprs) */
-void parser_prod__ASuperExpr__init_asuperexpr(val* self, val* p0, val* p1, val* p2) {
-val* var_n_qualified /* var n_qualified: nullable AQualified */;
-val* var_n_kwsuper /* var n_kwsuper: nullable TKwsuper */;
+/* method parser_prod#ACallReassignExpr#init_acallreassignexpr for (self: ACallReassignExpr, nullable AExpr, nullable TId, nullable AExprs, nullable AAssignOp, nullable AExpr) */
+void parser_prod__ACallReassignExpr__init_acallreassignexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
+val* var_n_expr /* var n_expr: nullable AExpr */;
+val* var_n_id /* var n_id: nullable TId */;
 val* var_n_args /* var n_args: nullable AExprs */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_n_qualified = p0;
-var_n_kwsuper = p1;
+val* var_n_assign_op /* var n_assign_op: nullable AAssignOp */;
+val* var_n_value /* var n_value: nullable AExpr */;
+var_n_expr = p0;
+var_n_id = p1;
 var_n_args = p2;
-((void (*)(val*))(self->class->vft[COLOR_parser_prod__ASuperExpr__empty_init]))(self) /* empty_init on <self:ASuperExpr>*/;
-self->attrs[COLOR_parser_nodes__ASuperExpr___n_qualified].val = var_n_qualified; /* _n_qualified on <self:ASuperExpr> */
-var = NULL;
-if (var_n_qualified == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_n_qualified->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_qualified, self) /* parent= on <var_n_qualified:nullable AQualified(AQualified)>*/;
-} else {
-}
-if (var_n_kwsuper == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7711);
-exit(1);
-}
-self->attrs[COLOR_parser_nodes__ASuperExpr___n_kwsuper].val = var_n_kwsuper; /* _n_kwsuper on <self:ASuperExpr> */
-if (var_n_kwsuper == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7712);
-exit(1);
-} else {
-((void (*)(val*, val*))(var_n_kwsuper->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_kwsuper, self) /* parent= on <var_n_kwsuper:nullable TKwsuper>*/;
-}
-if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Cast failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7713);
-exit(1);
+var_n_assign_op = p3;
+var_n_value = p4;
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4337);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ASuperExpr___n_args].val = var_n_args; /* _n_args on <self:ASuperExpr> */
-if (var_n_args == NULL) {
-fprintf(stderr, "Runtime error: %s", "Reciever is null");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7714);
-exit(1);
+self->attrs[COLOR_parser_nodes__ASendExpr___n_expr].val = var_n_expr; /* _n_expr on <self:ACallReassignExpr> */
+if (var_n_expr == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4338);
+show_backtrace(1);
 } else {
-((void (*)(val*, val*))(var_n_args->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_n_args, self) /* parent= on <var_n_args:nullable AExprs>*/;
-}
-RET_LABEL:;
+{ /* Inline parser_nodes#ANode#parent= (var_n_expr,self) on <var_n_expr:nullable AExpr> */
+if (unlikely(var_n_expr == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-/* method parser_prod#ASuperExpr#init_asuperexpr for (self: Object, nullable AQualified, nullable TKwsuper, nullable AExprs) */
-void VIRTUAL_parser_prod__ASuperExpr__init_asuperexpr(val* self, val* p0, val* p1, val* p2) {
-parser_prod__ASuperExpr__init_asuperexpr(self, p0, p1, p2);
-RET_LABEL:;
+var_n_expr->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_expr:nullable AExpr> */
+RET_LABEL1:(void)0;
 }
-/* method parser_prod#ASuperExpr#replace_child for (self: ASuperExpr, ANode, nullable ANode) */
-void parser_prod__ASuperExpr__replace_child(val* self, val* p0, val* p1) {
-val* var_old_child /* var old_child: ANode */;
-val* var_new_child /* var new_child: nullable ANode */;
-val* var /* : nullable AQualified */;
-short int var1 /* : Bool */;
-val* var2 /* : null */;
-short int var3 /* : Bool */;
-short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var5 /* : null */;
-val* var6 /* : TKwsuper */;
-short int var7 /* : Bool */;
-val* var8 /* : null */;
-short int var9 /* : Bool */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var13 /* : AExprs */;
-short int var14 /* : Bool */;
-val* var15 /* : null */;
-short int var16 /* : Bool */;
-short int var17 /* : Bool */;
-int cltype18;
-int idtype19;
-var_old_child = p0;
-var_new_child = p1;
-var = self->attrs[COLOR_parser_nodes__ASuperExpr___n_qualified].val; /* _n_qualified on <self:ASuperExpr> */
-if (var == NULL) {
-var1 = 0; /* <var_old_child:ANode> cannot be null */
-} else {
-var1 = ((short int (*)(val*, val*))(var->class->vft[COLOR_kernel__Object___61d_61d]))(var, var_old_child) /* == on <var:nullable AQualified>*/;
 }
-if (var1){
-var2 = NULL;
-if (var_new_child == NULL) {
-var3 = 0; /* is null */
-} else {
-var3 = 1; /* arg is null and recv is not */
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4339);
+show_backtrace(1);
 }
-if (var3){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AQualified */
-cltype = type_parser_nodes__AQualified.color;
-idtype = type_parser_nodes__AQualified.id;
-if(cltype >= var_new_child->type->table_size) {
-var4 = 0;
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_id].val = var_n_id; /* _n_id on <self:ACallReassignExpr> */
+if (var_n_id == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4340);
+show_backtrace(1);
 } else {
-var4 = var_new_child->type->type_table[cltype] == idtype;
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7722);
-exit(1);
+{ /* Inline parser_nodes#ANode#parent= (var_n_id,self) on <var_n_id:nullable TId> */
+if (unlikely(var_n_id == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ASuperExpr___n_qualified].val = var_new_child; /* _n_qualified on <self:ASuperExpr> */
-} else {
-var5 = NULL;
-self->attrs[COLOR_parser_nodes__ASuperExpr___n_qualified].val = var5; /* _n_qualified on <self:ASuperExpr> */
+var_n_id->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_id:nullable TId> */
+RET_LABEL2:(void)0;
 }
-goto RET_LABEL;
-} else {
 }
-var6 = self->attrs[COLOR_parser_nodes__ASuperExpr___n_kwsuper].val; /* _n_kwsuper on <self:ASuperExpr> */
-if (var6 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_kwsuper");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7729);
-exit(1);
+if (unlikely(var_n_args == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4341);
+show_backtrace(1);
 }
-var7 = ((short int (*)(val*, val*))(var6->class->vft[COLOR_kernel__Object___61d_61d]))(var6, var_old_child) /* == on <var6:TKwsuper>*/;
-if (var7){
-var8 = NULL;
-if (var_new_child == NULL) {
-var9 = 0; /* is null */
+self->attrs[COLOR_parser_nodes__ACallFormExpr___n_args].val = var_n_args; /* _n_args on <self:ACallReassignExpr> */
+if (var_n_args == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4342);
+show_backtrace(1);
 } else {
-var9 = 1; /* arg is null and recv is not */
+{ /* Inline parser_nodes#ANode#parent= (var_n_args,self) on <var_n_args:nullable AExprs> */
+if (unlikely(var_n_args == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-if (var9){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa TKwsuper */
-cltype11 = type_parser_nodes__TKwsuper.color;
-idtype12 = type_parser_nodes__TKwsuper.id;
-if(cltype11 >= var_new_child->type->table_size) {
-var10 = 0;
-} else {
-var10 = var_new_child->type->type_table[cltype11] == idtype12;
+var_n_args->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_args:nullable AExprs> */
+RET_LABEL3:(void)0;
 }
-if (!var10) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7732);
-exit(1);
 }
-self->attrs[COLOR_parser_nodes__ASuperExpr___n_kwsuper].val = var_new_child; /* _n_kwsuper on <self:ASuperExpr> */
-} else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7735);
-exit(1);
+if (unlikely(var_n_assign_op == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4343);
+show_backtrace(1);
 }
-goto RET_LABEL;
+self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_assign_op].val = var_n_assign_op; /* _n_assign_op on <self:ACallReassignExpr> */
+if (var_n_assign_op == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4344);
+show_backtrace(1);
 } else {
+{ /* Inline parser_nodes#ANode#parent= (var_n_assign_op,self) on <var_n_assign_op:nullable AAssignOp> */
+if (unlikely(var_n_assign_op == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-var13 = self->attrs[COLOR_parser_nodes__ASuperExpr___n_args].val; /* _n_args on <self:ASuperExpr> */
-if (var13 == NULL) {
-fprintf(stderr, "Runtime error: %s", "Uninitialized attribute _n_args");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7739);
-exit(1);
-}
-var14 = ((short int (*)(val*, val*))(var13->class->vft[COLOR_kernel__Object___61d_61d]))(var13, var_old_child) /* == on <var13:AExprs>*/;
-if (var14){
-var15 = NULL;
-if (var_new_child == NULL) {
-var16 = 0; /* is null */
-} else {
-var16 = 1; /* arg is null and recv is not */
+var_n_assign_op->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_assign_op:nullable AAssignOp> */
+RET_LABEL4:(void)0;
 }
-if (var16){
-((void (*)(val*, val*))(var_new_child->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_new_child, self) /* parent= on <var_new_child:nullable ANode(ANode)>*/;
-/* <var_new_child:nullable ANode(ANode)> isa AExprs */
-cltype18 = type_parser_nodes__AExprs.color;
-idtype19 = type_parser_nodes__AExprs.id;
-if(cltype18 >= var_new_child->type->table_size) {
-var17 = 0;
-} else {
-var17 = var_new_child->type->type_table[cltype18] == idtype19;
 }
-if (!var17) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7742);
-exit(1);
+if (unlikely(var_n_value == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Cast failed");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4345);
+show_backtrace(1);
 }
-self->attrs[COLOR_parser_nodes__ASuperExpr___n_args].val = var_new_child; /* _n_args on <self:ASuperExpr> */
+self->attrs[COLOR_parser_nodes__AReassignFormExpr___n_value].val = var_n_value; /* _n_value on <self:ACallReassignExpr> */
+if (var_n_value == NULL) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_prod.nit", 4346);
+show_backtrace(1);
 } else {
-fprintf(stderr, "Runtime error: %s", "Aborted");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser_prod.nit", 7745);
-exit(1);
+{ /* Inline parser_nodes#ANode#parent= (var_n_value,self) on <var_n_value:nullable AExpr> */
+if (unlikely(var_n_value == NULL)) {
+PRINT_ERROR("Runtime error: %s", "Receiver is null");
+PRINT_ERROR(" (%s:%d)\n", "parser/parser_nodes.nit", 36);
+show_backtrace(1);
 }
-goto RET_LABEL;
-} else {
+var_n_value->attrs[COLOR_parser_nodes__ANode___parent].val = self; /* _parent on <var_n_value:nullable AExpr> */
+RET_LABEL5:(void)0;
 }
-RET_LABEL:;
 }
-/* method parser_prod#ASuperExpr#replace_child for (self: Object, ANode, nullable ANode) */
-void VIRTUAL_parser_prod__ASuperExpr__replace_child(val* self, val* p0, val* p1) {
-parser_prod__ASuperExpr__replace_child(self, p0, p1);
 RET_LABEL:;
 }
-/* method parser_prod#ASuperExpr#n_qualified= for (self: ASuperExpr, nullable AQualified) */
-void parser_prod__ASuperExpr__n_qualified_61d(val* self, val* p0) {
-val* var_node /* var node: nullable AQualified */;
-val* var /* : null */;
-short int var1 /* : Bool */;
-var_node = p0;
-self->attrs[COLOR_parser_nodes__ASuperExpr___n_qualified].val = var_node; /* _n_qualified on <self:ASuperExpr> */
-var = NULL;
-if (var_node == NULL) {
-var1 = 0; /* is null */
-} else {
-var1 = 1; /* arg is null and recv is not */
-}
-if (var1){
-((void (*)(val*, val*))(var_node->class->vft[COLOR_parser_nodes__ANode__parent_61d]))(var_node, self) /* parent= on <var_node:nullable AQualified(AQualified)>*/;
-} else {
-}
+/* method parser_prod#ACallReassignExpr#init_acallreassignexpr for (self: Object, nullable AExpr, nullable TId, nullable AExprs, nullable AAssignOp, nullable AExpr) */
+void VIRTUAL_parser_prod__ACallReassignExpr__init_acallreassignexpr(val* self, val* p0, val* p1, val* p2, val* p3, val* p4) {
+parser_prod__ACallReassignExpr__init_acallreassignexpr(self, p0, p1, p2, p3, p4); /* Direct call parser_prod#ACallReassignExpr#init_acallreassignexpr on <self:Object(ACallReassignExpr)>*/
 RET_LABEL:;
 }