X-Git-Url: http://nitlanguage.org

diff --git a/c_src/parser.sep.14.c b/c_src/parser.sep.14.c
index 6b7155c..942bdb1 100644
--- a/c_src/parser.sep.14.c
+++ b/c_src/parser.sep.14.c
@@ -1,472 +1,354 @@
 #include "parser.sep.0.h"
-/* method parser#ReduceAction629#action for (self: ReduceAction629, Parser) */
-void parser__ReduceAction629__action(val* self, val* p0) {
+/* method parser#ReduceAction652#action for (self: ReduceAction652, Parser) */
+void parser__ReduceAction652__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var4 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var5 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var_listnode3 /* var listnode3: nullable Object */;
-short int var6 /* : Bool */;
+val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var7 /* : Array[Object] */;
-val* var_tclassidnode5 /* var tclassidnode5: nullable Object */;
+val* var_tidnode3 /* var tidnode3: nullable Object */;
 short int var8 /* : Bool */;
 int cltype9;
 int idtype10;
-val* var11 /* : AQualified */;
-val* var_pqualifiednode2 /* var pqualifiednode2: nullable AQualified */;
-val* var_tkwsupernode6 /* var tkwsupernode6: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
-val* var_pexprsnode7 /* var pexprsnode7: nullable Object */;
-short int var15 /* : Bool */;
-int cltype16;
-int idtype17;
-val* var18 /* : ASuperExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ASuperExpr */;
-long var19 /* : Int */;
-long var20 /* : Int */;
+val* var_ptypenode4 /* var ptypenode4: nullable Object */;
+short int var11 /* : Bool */;
+int cltype12;
+int idtype13;
+val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+short int var14 /* : Bool */;
+int cltype15;
+int idtype16;
+val* var_pexprnode6 /* var pexprnode6: nullable Object */;
+short int var17 /* : Bool */;
+int cltype18;
+int idtype19;
+val* var20 /* : AVardeclExpr */;
+val* var21 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
+long var22 /* : Int */;
+long var23 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist6 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist5 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
+var_nodearraylist4 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var5 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var5->class->vft[COLOR_array__Array__init]))(var5) /* init on <var5:Array[Object]>*/;
-CHECK_NEW_array__Array(var5);
-var_listnode4 = var5;
-var_listnode3 = var_nodearraylist1;
-/* <var_listnode3:nullable Object> isa Array[Object] */
-cltype = type_array__Arraykernel__Object.color;
-idtype = type_array__Arraykernel__Object.id;
-if(var_listnode3 == NULL) {
-var6 = 0;
+var_nodearraylist3 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var6;
+var_tkwvarnode2 = var_nodearraylist1;
+/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
+cltype = type_nullable_parser_nodes__TKwvar.color;
+idtype = type_nullable_parser_nodes__TKwvar.id;
+if(var_tkwvarnode2 == NULL) {
+var7 = 1;
 } else {
-if(cltype >= var_listnode3->type->table_size) {
-var6 = 0;
+if(cltype >= var_tkwvarnode2->type->table_size) {
+var7 = 0;
 } else {
-var6 = var_listnode3->type->type_table[cltype] == idtype;
+var7 = var_tkwvarnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var6) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24492);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25026);
+show_backtrace(1);
 }
-var7 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction629>*/;
-var_listnode4 = var7;
-var_tclassidnode5 = var_nodearraylist2;
-/* <var_tclassidnode5:nullable Object> isa nullable TClassid */
-cltype9 = type_nullable_parser_nodes__TClassid.color;
-idtype10 = type_nullable_parser_nodes__TClassid.id;
-if(var_tclassidnode5 == NULL) {
+var_tidnode3 = var_nodearraylist2;
+/* <var_tidnode3:nullable Object> isa nullable TId */
+cltype9 = type_nullable_parser_nodes__TId.color;
+idtype10 = type_nullable_parser_nodes__TId.id;
+if(var_tidnode3 == NULL) {
 var8 = 1;
 } else {
-if(cltype9 >= var_tclassidnode5->type->table_size) {
+if(cltype9 >= var_tidnode3->type->table_size) {
 var8 = 0;
 } else {
-var8 = var_tclassidnode5->type->type_table[cltype9] == idtype10;
+var8 = var_tidnode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24495);
-exit(1);
-}
-var11 = NEW_parser_nodes__AQualified(&type_parser_nodes__AQualified);
-((void (*)(val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AQualified__init_aqualified]))(var11, var_listnode4, var_tclassidnode5) /* init_aqualified on <var11:AQualified>*/;
-CHECK_NEW_parser_nodes__AQualified(var11);
-var_pqualifiednode2 = var11;
-var_tkwsupernode6 = var_nodearraylist3;
-/* <var_tkwsupernode6:nullable Object> isa nullable TKwsuper */
-cltype13 = type_nullable_parser_nodes__TKwsuper.color;
-idtype14 = type_nullable_parser_nodes__TKwsuper.id;
-if(var_tkwsupernode6 == NULL) {
-var12 = 1;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25028);
+show_backtrace(1);
+}
+var_ptypenode4 = var_nodearraylist3;
+/* <var_ptypenode4:nullable Object> isa nullable AType */
+cltype12 = type_nullable_parser_nodes__AType.color;
+idtype13 = type_nullable_parser_nodes__AType.id;
+if(var_ptypenode4 == NULL) {
+var11 = 1;
 } else {
-if(cltype13 >= var_tkwsupernode6->type->table_size) {
-var12 = 0;
+if(cltype12 >= var_ptypenode4->type->table_size) {
+var11 = 0;
 } else {
-var12 = var_tkwsupernode6->type->type_table[cltype13] == idtype14;
+var11 = var_ptypenode4->type->type_table[cltype12] == idtype13;
 }
 }
-if (!var12) {
+if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24501);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25030);
+show_backtrace(1);
 }
-var_pexprsnode7 = var_nodearraylist4;
-/* <var_pexprsnode7:nullable Object> isa nullable AExprs */
-cltype16 = type_nullable_parser_nodes__AExprs.color;
-idtype17 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode7 == NULL) {
-var15 = 1;
+var_tassignnode5 = var_nodearraylist4;
+/* <var_tassignnode5:nullable Object> isa nullable TAssign */
+cltype15 = type_nullable_parser_nodes__TAssign.color;
+idtype16 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode5 == NULL) {
+var14 = 1;
 } else {
-if(cltype16 >= var_pexprsnode7->type->table_size) {
-var15 = 0;
+if(cltype15 >= var_tassignnode5->type->table_size) {
+var14 = 0;
 } else {
-var15 = var_pexprsnode7->type->type_table[cltype16] == idtype17;
+var14 = var_tassignnode5->type->type_table[cltype15] == idtype16;
 }
 }
-if (!var15) {
+if (!var14) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24503);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25032);
+show_backtrace(1);
 }
-var18 = NEW_parser_nodes__ASuperExpr(&type_parser_nodes__ASuperExpr);
-((void (*)(val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__ASuperExpr__init_asuperexpr]))(var18, var_pqualifiednode2, var_tkwsupernode6, var_pexprsnode7) /* init_asuperexpr on <var18:ASuperExpr>*/;
-CHECK_NEW_parser_nodes__ASuperExpr(var18);
-var_pexprnode1 = var18;
+var_pexprnode6 = var_nodearraylist6;
+/* <var_pexprnode6:nullable Object> isa nullable AExpr */
+cltype18 = type_nullable_parser_nodes__AExpr.color;
+idtype19 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode6 == NULL) {
+var17 = 1;
+} else {
+if(cltype18 >= var_pexprnode6->type->table_size) {
+var17 = 0;
+} else {
+var17 = var_pexprnode6->type->type_table[cltype18] == idtype19;
+}
+}
+if (!var17) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25034);
+show_backtrace(1);
+}
+var20 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
+var21 = NULL;
+((void (*)(val*, val*, val*, val*, val*, val*, val*))(var20->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var20, var_tkwvarnode2, var_tidnode3, var_ptypenode4, var_tassignnode5, var_pexprnode6, var21) /* init_avardeclexpr on <var20:AVardeclExpr>*/;
+var_pexprnode1 = var20;
 var_node_list = var_pexprnode1;
-var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction629> */
-var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
+var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction652> */
+var23 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var22) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var23, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction629#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction629__action(val* self, val* p0) {
-parser__ReduceAction629__action(self, p0);
+/* method parser#ReduceAction652#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction652__action(val* self, val* p0) {
+parser__ReduceAction652__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction630#action for (self: ReduceAction630, Parser) */
-void parser__ReduceAction630__action(val* self, val* p0) {
+/* method parser#ReduceAction653#action for (self: ReduceAction653, Parser) */
+void parser__ReduceAction653__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var3 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var7 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var4 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var_listnode3 /* var listnode3: nullable Object */;
-short int var5 /* : Bool */;
+val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
+short int var8 /* : Bool */;
 int cltype;
 int idtype;
-val* var6 /* : Array[Object] */;
-val* var7 /* : AQualified */;
-val* var8 /* : null */;
-val* var_pqualifiednode2 /* var pqualifiednode2: nullable AQualified */;
-val* var_tkwsupernode6 /* var tkwsupernode6: nullable Object */;
+val* var_tidnode3 /* var tidnode3: nullable Object */;
 short int var9 /* : Bool */;
 int cltype10;
 int idtype11;
-val* var_pexprsnode7 /* var pexprsnode7: nullable Object */;
+val* var_ptypenode4 /* var ptypenode4: nullable Object */;
 short int var12 /* : Bool */;
 int cltype13;
 int idtype14;
-val* var15 /* : ASuperExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ASuperExpr */;
-long var16 /* : Int */;
-long var17 /* : Int */;
+val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+val* var_pexprnode6 /* var pexprnode6: nullable Object */;
+short int var18 /* : Bool */;
+int cltype19;
+int idtype20;
+val* var_pannotationsnode7 /* var pannotationsnode7: nullable Object */;
+short int var21 /* : Bool */;
+int cltype22;
+int idtype23;
+val* var24 /* : AVardeclExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
+long var25 /* : Int */;
+long var26 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
+var_nodearraylist7 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist6 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var4 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var4->class->vft[COLOR_array__Array__init]))(var4) /* init on <var4:Array[Object]>*/;
-CHECK_NEW_array__Array(var4);
-var_listnode4 = var4;
-var_listnode3 = var_nodearraylist1;
-/* <var_listnode3:nullable Object> isa Array[Object] */
-cltype = type_array__Arraykernel__Object.color;
-idtype = type_array__Arraykernel__Object.id;
-if(var_listnode3 == NULL) {
-var5 = 0;
+var_nodearraylist5 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var7;
+var_tkwvarnode2 = var_nodearraylist1;
+/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
+cltype = type_nullable_parser_nodes__TKwvar.color;
+idtype = type_nullable_parser_nodes__TKwvar.id;
+if(var_tkwvarnode2 == NULL) {
+var8 = 1;
 } else {
-if(cltype >= var_listnode3->type->table_size) {
-var5 = 0;
+if(cltype >= var_tkwvarnode2->type->table_size) {
+var8 = 0;
 } else {
-var5 = var_listnode3->type->type_table[cltype] == idtype;
+var8 = var_tkwvarnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var5) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24523);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25060);
+show_backtrace(1);
 }
-var6 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction630>*/;
-var_listnode4 = var6;
-var7 = NEW_parser_nodes__AQualified(&type_parser_nodes__AQualified);
-var8 = NULL;
-((void (*)(val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AQualified__init_aqualified]))(var7, var_listnode4, var8) /* init_aqualified on <var7:AQualified>*/;
-CHECK_NEW_parser_nodes__AQualified(var7);
-var_pqualifiednode2 = var7;
-var_tkwsupernode6 = var_nodearraylist2;
-/* <var_tkwsupernode6:nullable Object> isa nullable TKwsuper */
-cltype10 = type_nullable_parser_nodes__TKwsuper.color;
-idtype11 = type_nullable_parser_nodes__TKwsuper.id;
-if(var_tkwsupernode6 == NULL) {
+var_tidnode3 = var_nodearraylist2;
+/* <var_tidnode3:nullable Object> isa nullable TId */
+cltype10 = type_nullable_parser_nodes__TId.color;
+idtype11 = type_nullable_parser_nodes__TId.id;
+if(var_tidnode3 == NULL) {
 var9 = 1;
 } else {
-if(cltype10 >= var_tkwsupernode6->type->table_size) {
+if(cltype10 >= var_tidnode3->type->table_size) {
 var9 = 0;
 } else {
-var9 = var_tkwsupernode6->type->type_table[cltype10] == idtype11;
+var9 = var_tidnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24530);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25062);
+show_backtrace(1);
 }
-var_pexprsnode7 = var_nodearraylist3;
-/* <var_pexprsnode7:nullable Object> isa nullable AExprs */
-cltype13 = type_nullable_parser_nodes__AExprs.color;
-idtype14 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode7 == NULL) {
+var_ptypenode4 = var_nodearraylist4;
+/* <var_ptypenode4:nullable Object> isa nullable AType */
+cltype13 = type_nullable_parser_nodes__AType.color;
+idtype14 = type_nullable_parser_nodes__AType.id;
+if(var_ptypenode4 == NULL) {
 var12 = 1;
 } else {
-if(cltype13 >= var_pexprsnode7->type->table_size) {
+if(cltype13 >= var_ptypenode4->type->table_size) {
 var12 = 0;
 } else {
-var12 = var_pexprsnode7->type->type_table[cltype13] == idtype14;
+var12 = var_ptypenode4->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24532);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25064);
+show_backtrace(1);
 }
-var15 = NEW_parser_nodes__ASuperExpr(&type_parser_nodes__ASuperExpr);
-((void (*)(val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__ASuperExpr__init_asuperexpr]))(var15, var_pqualifiednode2, var_tkwsupernode6, var_pexprsnode7) /* init_asuperexpr on <var15:ASuperExpr>*/;
-CHECK_NEW_parser_nodes__ASuperExpr(var15);
-var_pexprnode1 = var15;
-var_node_list = var_pexprnode1;
-var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction630> */
-var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
+var_tassignnode5 = var_nodearraylist5;
+/* <var_tassignnode5:nullable Object> isa nullable TAssign */
+cltype16 = type_nullable_parser_nodes__TAssign.color;
+idtype17 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode5 == NULL) {
+var15 = 1;
+} else {
+if(cltype16 >= var_tassignnode5->type->table_size) {
+var15 = 0;
+} else {
+var15 = var_tassignnode5->type->type_table[cltype16] == idtype17;
 }
-/* method parser#ReduceAction630#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction630__action(val* self, val* p0) {
-parser__ReduceAction630__action(self, p0);
-RET_LABEL:;
 }
-/* method parser#ReduceAction631#action for (self: ReduceAction631, Parser) */
-void parser__ReduceAction631__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var6 /* : Bool */;
-int cltype;
-int idtype;
-val* var_tkwinitnode3 /* var tkwinitnode3: nullable Object */;
-short int var7 /* : Bool */;
-int cltype8;
-int idtype9;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var13 /* : AInitExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AInitExpr */;
-long var14 /* : Int */;
-long var15 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var5;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var6 = 1;
-} else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var6 = 0;
-} else {
-var6 = var_pexprnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var6) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24553);
-exit(1);
-}
-var_tkwinitnode3 = var_nodearraylist4;
-/* <var_tkwinitnode3:nullable Object> isa nullable TKwinit */
-cltype8 = type_nullable_parser_nodes__TKwinit.color;
-idtype9 = type_nullable_parser_nodes__TKwinit.id;
-if(var_tkwinitnode3 == NULL) {
-var7 = 1;
-} else {
-if(cltype8 >= var_tkwinitnode3->type->table_size) {
-var7 = 0;
-} else {
-var7 = var_tkwinitnode3->type->type_table[cltype8] == idtype9;
-}
-}
-if (!var7) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24555);
-exit(1);
-}
-var_pexprsnode4 = var_nodearraylist5;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype11 = type_nullable_parser_nodes__AExprs.color;
-idtype12 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var10 = 1;
-} else {
-if(cltype11 >= var_pexprsnode4->type->table_size) {
-var10 = 0;
-} else {
-var10 = var_pexprsnode4->type->type_table[cltype11] == idtype12;
-}
-}
-if (!var10) {
+if (!var15) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24557);
-exit(1);
-}
-var13 = NEW_parser_nodes__AInitExpr(&type_parser_nodes__AInitExpr);
-((void (*)(val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AInitExpr__init_ainitexpr]))(var13, var_pexprnode2, var_tkwinitnode3, var_pexprsnode4) /* init_ainitexpr on <var13:AInitExpr>*/;
-CHECK_NEW_parser_nodes__AInitExpr(var13);
-var_pexprnode1 = var13;
-var_node_list = var_pexprnode1;
-var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction631> */
-var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25066);
+show_backtrace(1);
 }
-/* method parser#ReduceAction631#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction631__action(val* self, val* p0) {
-parser__ReduceAction631__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction632#action for (self: ReduceAction632, Parser) */
-void parser__ReduceAction632__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var3 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tkwinitnode3 /* var tkwinitnode3: nullable Object */;
-short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var5 /* : Bool */;
-int cltype6;
-int idtype7;
-val* var8 /* : AInitExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AInitExpr */;
-long var9 /* : Int */;
-long var10 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var2;
-var3 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var3->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var3) /* init_aimplicitselfexpr on <var3:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var3);
-var_pexprnode2 = var3;
-var_tkwinitnode3 = var_nodearraylist1;
-/* <var_tkwinitnode3:nullable Object> isa nullable TKwinit */
-cltype = type_nullable_parser_nodes__TKwinit.color;
-idtype = type_nullable_parser_nodes__TKwinit.id;
-if(var_tkwinitnode3 == NULL) {
-var4 = 1;
+var_pexprnode6 = var_nodearraylist7;
+/* <var_pexprnode6:nullable Object> isa nullable AExpr */
+cltype19 = type_nullable_parser_nodes__AExpr.color;
+idtype20 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode6 == NULL) {
+var18 = 1;
 } else {
-if(cltype >= var_tkwinitnode3->type->table_size) {
-var4 = 0;
+if(cltype19 >= var_pexprnode6->type->table_size) {
+var18 = 0;
 } else {
-var4 = var_tkwinitnode3->type->type_table[cltype] == idtype;
+var18 = var_pexprnode6->type->type_table[cltype19] == idtype20;
 }
 }
-if (!var4) {
+if (!var18) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24576);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25068);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist2;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype6 = type_nullable_parser_nodes__AExprs.color;
-idtype7 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var5 = 1;
+var_pannotationsnode7 = var_nodearraylist3;
+/* <var_pannotationsnode7:nullable Object> isa nullable AAnnotations */
+cltype22 = type_nullable_parser_nodes__AAnnotations.color;
+idtype23 = type_nullable_parser_nodes__AAnnotations.id;
+if(var_pannotationsnode7 == NULL) {
+var21 = 1;
 } else {
-if(cltype6 >= var_pexprsnode4->type->table_size) {
-var5 = 0;
+if(cltype22 >= var_pannotationsnode7->type->table_size) {
+var21 = 0;
 } else {
-var5 = var_pexprsnode4->type->type_table[cltype6] == idtype7;
+var21 = var_pannotationsnode7->type->type_table[cltype22] == idtype23;
 }
 }
-if (!var5) {
+if (!var21) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24578);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25070);
+show_backtrace(1);
 }
-var8 = NEW_parser_nodes__AInitExpr(&type_parser_nodes__AInitExpr);
-((void (*)(val*, val*, val*, val*))(var8->class->vft[COLOR_parser_prod__AInitExpr__init_ainitexpr]))(var8, var_pexprnode2, var_tkwinitnode3, var_pexprsnode4) /* init_ainitexpr on <var8:AInitExpr>*/;
-CHECK_NEW_parser_nodes__AInitExpr(var8);
-var_pexprnode1 = var8;
+var24 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
+((void (*)(val*, val*, val*, val*, val*, val*, val*))(var24->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var24, var_tkwvarnode2, var_tidnode3, var_ptypenode4, var_tassignnode5, var_pexprnode6, var_pannotationsnode7) /* init_avardeclexpr on <var24:AVardeclExpr>*/;
+var_pexprnode1 = var24;
 var_node_list = var_pexprnode1;
-var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction632> */
-var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
+var25 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction653> */
+var26 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var25) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var26, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction632#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction632__action(val* self, val* p0) {
-parser__ReduceAction632__action(self, p0);
+/* method parser#ReduceAction653#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction653__action(val* self, val* p0) {
+parser__ReduceAction653__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction633#action for (self: ReduceAction633, Parser) */
-void parser__ReduceAction633__action(val* self, val* p0) {
+/* method parser#ReduceAction654#action for (self: ReduceAction654, Parser) */
+void parser__ReduceAction654__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -486,18 +368,22 @@ val* var_pexprnode2 /* var pexprnode2: nullable Object */;
 short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tkwinitnode3 /* var tkwinitnode3: nullable Object */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
 short int var8 /* : Bool */;
 int cltype9;
 int idtype10;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
+val* var_tassignnode4 /* var tassignnode4: nullable Object */;
 short int var11 /* : Bool */;
 int cltype12;
 int idtype13;
-val* var14 /* : AInitExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AInitExpr */;
-long var15 /* : Int */;
-long var16 /* : Int */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var14 /* : Bool */;
+int cltype15;
+int idtype16;
+val* var17 /* : AAttrAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
+long var18 /* : Int */;
+long var19 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
@@ -528,1098 +414,888 @@ var7 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24600);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25095);
+show_backtrace(1);
 }
-var_tkwinitnode3 = var_nodearraylist5;
-/* <var_tkwinitnode3:nullable Object> isa nullable TKwinit */
-cltype9 = type_nullable_parser_nodes__TKwinit.color;
-idtype10 = type_nullable_parser_nodes__TKwinit.id;
-if(var_tkwinitnode3 == NULL) {
+var_tattridnode3 = var_nodearraylist4;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype9 = type_nullable_parser_nodes__TAttrid.color;
+idtype10 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
 var8 = 1;
 } else {
-if(cltype9 >= var_tkwinitnode3->type->table_size) {
+if(cltype9 >= var_tattridnode3->type->table_size) {
 var8 = 0;
 } else {
-var8 = var_tkwinitnode3->type->type_table[cltype9] == idtype10;
+var8 = var_tattridnode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24602);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25097);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist6;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype12 = type_nullable_parser_nodes__AExprs.color;
-idtype13 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
+var_tassignnode4 = var_nodearraylist5;
+/* <var_tassignnode4:nullable Object> isa nullable TAssign */
+cltype12 = type_nullable_parser_nodes__TAssign.color;
+idtype13 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode4 == NULL) {
 var11 = 1;
 } else {
-if(cltype12 >= var_pexprsnode4->type->table_size) {
+if(cltype12 >= var_tassignnode4->type->table_size) {
 var11 = 0;
 } else {
-var11 = var_pexprsnode4->type->type_table[cltype12] == idtype13;
+var11 = var_tassignnode4->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24604);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25099);
+show_backtrace(1);
 }
-var14 = NEW_parser_nodes__AInitExpr(&type_parser_nodes__AInitExpr);
-((void (*)(val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AInitExpr__init_ainitexpr]))(var14, var_pexprnode2, var_tkwinitnode3, var_pexprsnode4) /* init_ainitexpr on <var14:AInitExpr>*/;
-CHECK_NEW_parser_nodes__AInitExpr(var14);
-var_pexprnode1 = var14;
+var_pexprnode5 = var_nodearraylist6;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype15 = type_nullable_parser_nodes__AExpr.color;
+idtype16 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var14 = 1;
+} else {
+if(cltype15 >= var_pexprnode5->type->table_size) {
+var14 = 0;
+} else {
+var14 = var_pexprnode5->type->type_table[cltype15] == idtype16;
+}
+}
+if (!var14) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25101);
+show_backtrace(1);
+}
+var17 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var17, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var17:AAttrAssignExpr>*/;
+var_pexprnode1 = var17;
 var_node_list = var_pexprnode1;
-var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction633> */
-var16 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var15) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var16, var_node_list) /* push on <var_p:Parser>*/;
+var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction654> */
+var19 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var18) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var19, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction633#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction633__action(val* self, val* p0) {
-parser__ReduceAction633__action(self, p0);
+/* method parser#ReduceAction654#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction654__action(val* self, val* p0) {
+parser__ReduceAction654__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction634#action for (self: ReduceAction634, Parser) */
-void parser__ReduceAction634__action(val* self, val* p0) {
+/* method parser#ReduceAction655#action for (self: ReduceAction655, Parser) */
+void parser__ReduceAction655__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var5 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var8 /* : Bool */;
+val* var4 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tkwinitnode3 /* var tkwinitnode3: nullable Object */;
+val* var_tassignnode4 /* var tassignnode4: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
 short int var9 /* : Bool */;
 int cltype10;
 int idtype11;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
-val* var15 /* : AInitExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AInitExpr */;
-long var16 /* : Int */;
-long var17 /* : Int */;
+val* var12 /* : AAttrAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
+long var13 /* : Int */;
+long var14 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var1;
+var_nodearraylist3 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var2;
+var_nodearraylist2 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var7;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var8 = 1;
+var_nodearraylist1 = var3;
+var4 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var4->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var4) /* init_aimplicitselfexpr on <var4:AImplicitSelfExpr>*/;
+var_pexprnode2 = var4;
+var_tattridnode3 = var_nodearraylist1;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var8 = 0;
+if(cltype >= var_tattridnode3->type->table_size) {
+var5 = 0;
 } else {
-var8 = var_pexprnode2->type->type_table[cltype] == idtype;
+var5 = var_tattridnode3->type->type_table[cltype] == idtype;
 }
 }
-if (!var8) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24627);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25122);
+show_backtrace(1);
 }
-var_tkwinitnode3 = var_nodearraylist6;
-/* <var_tkwinitnode3:nullable Object> isa nullable TKwinit */
-cltype10 = type_nullable_parser_nodes__TKwinit.color;
-idtype11 = type_nullable_parser_nodes__TKwinit.id;
-if(var_tkwinitnode3 == NULL) {
-var9 = 1;
+var_tassignnode4 = var_nodearraylist2;
+/* <var_tassignnode4:nullable Object> isa nullable TAssign */
+cltype7 = type_nullable_parser_nodes__TAssign.color;
+idtype8 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode4 == NULL) {
+var6 = 1;
 } else {
-if(cltype10 >= var_tkwinitnode3->type->table_size) {
-var9 = 0;
+if(cltype7 >= var_tassignnode4->type->table_size) {
+var6 = 0;
 } else {
-var9 = var_tkwinitnode3->type->type_table[cltype10] == idtype11;
+var6 = var_tassignnode4->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var9) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24629);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25124);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist7;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype13 = type_nullable_parser_nodes__AExprs.color;
-idtype14 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var12 = 1;
+var_pexprnode5 = var_nodearraylist3;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype10 = type_nullable_parser_nodes__AExpr.color;
+idtype11 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var9 = 1;
 } else {
-if(cltype13 >= var_pexprsnode4->type->table_size) {
-var12 = 0;
+if(cltype10 >= var_pexprnode5->type->table_size) {
+var9 = 0;
 } else {
-var12 = var_pexprsnode4->type->type_table[cltype13] == idtype14;
+var9 = var_pexprnode5->type->type_table[cltype10] == idtype11;
 }
 }
-if (!var12) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24631);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25126);
+show_backtrace(1);
 }
-var15 = NEW_parser_nodes__AInitExpr(&type_parser_nodes__AInitExpr);
-((void (*)(val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__AInitExpr__init_ainitexpr]))(var15, var_pexprnode2, var_tkwinitnode3, var_pexprsnode4) /* init_ainitexpr on <var15:AInitExpr>*/;
-CHECK_NEW_parser_nodes__AInitExpr(var15);
-var_pexprnode1 = var15;
+var12 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var12, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var12:AAttrAssignExpr>*/;
+var_pexprnode1 = var12;
 var_node_list = var_pexprnode1;
-var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction634> */
-var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
+var13 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction655> */
+var14 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var13) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var14, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction634#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction634__action(val* self, val* p0) {
-parser__ReduceAction634__action(self, p0);
+/* method parser#ReduceAction655#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction655__action(val* self, val* p0) {
+parser__ReduceAction655__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction636#action for (self: ReduceAction636, Parser) */
-void parser__ReduceAction636__action(val* self, val* p0) {
+/* method parser#ReduceAction656#action for (self: ReduceAction656, Parser) */
+void parser__ReduceAction656__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var3 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var7 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var4 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tkwinitnode3 /* var tkwinitnode3: nullable Object */;
-short int var5 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var8 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var9 /* : AInitExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AInitExpr */;
-long var10 /* : Int */;
-long var11 /* : Int */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var_tassignnode4 /* var tassignnode4: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+val* var18 /* : AAttrAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
+long var19 /* : Int */;
+long var20 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
+var_nodearraylist7 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist6 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var4 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var4->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var4) /* init_aimplicitselfexpr on <var4:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var4);
-var_pexprnode2 = var4;
-var_tkwinitnode3 = var_nodearraylist2;
-/* <var_tkwinitnode3:nullable Object> isa nullable TKwinit */
-cltype = type_nullable_parser_nodes__TKwinit.color;
-idtype = type_nullable_parser_nodes__TKwinit.id;
-if(var_tkwinitnode3 == NULL) {
-var5 = 1;
+var_nodearraylist5 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var7;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var8 = 1;
 } else {
-if(cltype >= var_tkwinitnode3->type->table_size) {
-var5 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var8 = 0;
 } else {
-var5 = var_tkwinitnode3->type->type_table[cltype] == idtype;
+var8 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var5) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24651);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25150);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist3;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype7 = type_nullable_parser_nodes__AExprs.color;
-idtype8 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var6 = 1;
+var_tattridnode3 = var_nodearraylist5;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype10 = type_nullable_parser_nodes__TAttrid.color;
+idtype11 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var9 = 1;
 } else {
-if(cltype7 >= var_pexprsnode4->type->table_size) {
-var6 = 0;
+if(cltype10 >= var_tattridnode3->type->table_size) {
+var9 = 0;
 } else {
-var6 = var_pexprsnode4->type->type_table[cltype7] == idtype8;
+var9 = var_tattridnode3->type->type_table[cltype10] == idtype11;
 }
 }
-if (!var6) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24653);
-exit(1);
-}
-var9 = NEW_parser_nodes__AInitExpr(&type_parser_nodes__AInitExpr);
-((void (*)(val*, val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AInitExpr__init_ainitexpr]))(var9, var_pexprnode2, var_tkwinitnode3, var_pexprsnode4) /* init_ainitexpr on <var9:AInitExpr>*/;
-CHECK_NEW_parser_nodes__AInitExpr(var9);
-var_pexprnode1 = var9;
-var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction636> */
-var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction636#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction636__action(val* self, val* p0) {
-parser__ReduceAction636__action(self, p0);
-RET_LABEL:;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25152);
+show_backtrace(1);
 }
-/* method parser#ReduceAction637#action for (self: ReduceAction637, Parser) */
-void parser__ReduceAction637__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var5 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tkwinitnode3 /* var tkwinitnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype;
-int idtype;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var7 /* : Bool */;
-int cltype8;
-int idtype9;
-val* var10 /* : AInitExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AInitExpr */;
-long var11 /* : Int */;
-long var12 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var5);
-var_pexprnode2 = var5;
-var_tkwinitnode3 = var_nodearraylist3;
-/* <var_tkwinitnode3:nullable Object> isa nullable TKwinit */
-cltype = type_nullable_parser_nodes__TKwinit.color;
-idtype = type_nullable_parser_nodes__TKwinit.id;
-if(var_tkwinitnode3 == NULL) {
-var6 = 1;
+var_tassignnode4 = var_nodearraylist6;
+/* <var_tassignnode4:nullable Object> isa nullable TAssign */
+cltype13 = type_nullable_parser_nodes__TAssign.color;
+idtype14 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode4 == NULL) {
+var12 = 1;
 } else {
-if(cltype >= var_tkwinitnode3->type->table_size) {
-var6 = 0;
+if(cltype13 >= var_tassignnode4->type->table_size) {
+var12 = 0;
 } else {
-var6 = var_tkwinitnode3->type->type_table[cltype] == idtype;
+var12 = var_tassignnode4->type->type_table[cltype13] == idtype14;
 }
 }
-if (!var6) {
+if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24674);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25154);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist4;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype8 = type_nullable_parser_nodes__AExprs.color;
-idtype9 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var7 = 1;
+var_pexprnode5 = var_nodearraylist7;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype16 = type_nullable_parser_nodes__AExpr.color;
+idtype17 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var15 = 1;
 } else {
-if(cltype8 >= var_pexprsnode4->type->table_size) {
-var7 = 0;
+if(cltype16 >= var_pexprnode5->type->table_size) {
+var15 = 0;
 } else {
-var7 = var_pexprsnode4->type->type_table[cltype8] == idtype9;
+var15 = var_pexprnode5->type->type_table[cltype16] == idtype17;
 }
 }
-if (!var7) {
+if (!var15) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24676);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25156);
+show_backtrace(1);
 }
-var10 = NEW_parser_nodes__AInitExpr(&type_parser_nodes__AInitExpr);
-((void (*)(val*, val*, val*, val*))(var10->class->vft[COLOR_parser_prod__AInitExpr__init_ainitexpr]))(var10, var_pexprnode2, var_tkwinitnode3, var_pexprsnode4) /* init_ainitexpr on <var10:AInitExpr>*/;
-CHECK_NEW_parser_nodes__AInitExpr(var10);
-var_pexprnode1 = var10;
+var18 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var18, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var18:AAttrAssignExpr>*/;
+var_pexprnode1 = var18;
 var_node_list = var_pexprnode1;
-var11 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction637> */
-var12 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var11) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var12, var_node_list) /* push on <var_p:Parser>*/;
+var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction656> */
+var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction637#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction637__action(val* self, val* p0) {
-parser__ReduceAction637__action(self, p0);
+/* method parser#ReduceAction656#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction656__action(val* self, val* p0) {
+parser__ReduceAction656__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction639#action for (self: ReduceAction639, Parser) */
-void parser__ReduceAction639__action(val* self, val* p0) {
+/* method parser#ReduceAction657#action for (self: ReduceAction657, Parser) */
+void parser__ReduceAction657__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var4 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var5 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var8 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwdebugnode2 /* var tkwdebugnode2: nullable Object */;
-short int var6 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var9 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tkwtypenode3 /* var tkwtypenode3: nullable Object */;
-short int var7 /* : Bool */;
-int cltype8;
-int idtype9;
-val* var_pexprnode4 /* var pexprnode4: nullable Object */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
 short int var10 /* : Bool */;
 int cltype11;
 int idtype12;
-val* var_ptypenode5 /* var ptypenode5: nullable Object */;
+val* var_tassignnode4 /* var tassignnode4: nullable Object */;
 short int var13 /* : Bool */;
 int cltype14;
 int idtype15;
-val* var16 /* : ADebugTypeExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ADebugTypeExpr */;
-long var17 /* : Int */;
-long var18 /* : Int */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var16 /* : Bool */;
+int cltype17;
+int idtype18;
+val* var19 /* : AAttrAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
+long var20 /* : Int */;
+long var21 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var1;
+var_nodearraylist8 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var2;
+var_nodearraylist7 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var3;
+var_nodearraylist6 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var4;
+var_nodearraylist5 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var5;
-var_tkwdebugnode2 = var_nodearraylist1;
-/* <var_tkwdebugnode2:nullable Object> isa nullable TKwdebug */
-cltype = type_nullable_parser_nodes__TKwdebug.color;
-idtype = type_nullable_parser_nodes__TKwdebug.id;
-if(var_tkwdebugnode2 == NULL) {
-var6 = 1;
-} else {
-if(cltype >= var_tkwdebugnode2->type->table_size) {
-var6 = 0;
-} else {
-var6 = var_tkwdebugnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var6) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24697);
-exit(1);
-}
-var_tkwtypenode3 = var_nodearraylist2;
-/* <var_tkwtypenode3:nullable Object> isa nullable TKwtype */
-cltype8 = type_nullable_parser_nodes__TKwtype.color;
-idtype9 = type_nullable_parser_nodes__TKwtype.id;
-if(var_tkwtypenode3 == NULL) {
-var7 = 1;
+var_nodearraylist4 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var8;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var9 = 1;
 } else {
-if(cltype8 >= var_tkwtypenode3->type->table_size) {
-var7 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var9 = 0;
 } else {
-var7 = var_tkwtypenode3->type->type_table[cltype8] == idtype9;
+var9 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var7) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24699);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25181);
+show_backtrace(1);
 }
-var_pexprnode4 = var_nodearraylist5;
-/* <var_pexprnode4:nullable Object> isa nullable AExpr */
-cltype11 = type_nullable_parser_nodes__AExpr.color;
-idtype12 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode4 == NULL) {
+var_tattridnode3 = var_nodearraylist6;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype11 = type_nullable_parser_nodes__TAttrid.color;
+idtype12 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
 var10 = 1;
 } else {
-if(cltype11 >= var_pexprnode4->type->table_size) {
+if(cltype11 >= var_tattridnode3->type->table_size) {
 var10 = 0;
 } else {
-var10 = var_pexprnode4->type->type_table[cltype11] == idtype12;
+var10 = var_tattridnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24701);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25183);
+show_backtrace(1);
 }
-var_ptypenode5 = var_nodearraylist3;
-/* <var_ptypenode5:nullable Object> isa nullable AType */
-cltype14 = type_nullable_parser_nodes__AType.color;
-idtype15 = type_nullable_parser_nodes__AType.id;
-if(var_ptypenode5 == NULL) {
+var_tassignnode4 = var_nodearraylist7;
+/* <var_tassignnode4:nullable Object> isa nullable TAssign */
+cltype14 = type_nullable_parser_nodes__TAssign.color;
+idtype15 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode4 == NULL) {
 var13 = 1;
 } else {
-if(cltype14 >= var_ptypenode5->type->table_size) {
+if(cltype14 >= var_tassignnode4->type->table_size) {
 var13 = 0;
 } else {
-var13 = var_ptypenode5->type->type_table[cltype14] == idtype15;
+var13 = var_tassignnode4->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24703);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25185);
+show_backtrace(1);
 }
-var16 = NEW_parser_nodes__ADebugTypeExpr(&type_parser_nodes__ADebugTypeExpr);
-((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__ADebugTypeExpr__init_adebugtypeexpr]))(var16, var_tkwdebugnode2, var_tkwtypenode3, var_pexprnode4, var_ptypenode5) /* init_adebugtypeexpr on <var16:ADebugTypeExpr>*/;
-CHECK_NEW_parser_nodes__ADebugTypeExpr(var16);
-var_pexprnode1 = var16;
+var_pexprnode5 = var_nodearraylist8;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype17 = type_nullable_parser_nodes__AExpr.color;
+idtype18 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var16 = 1;
+} else {
+if(cltype17 >= var_pexprnode5->type->table_size) {
+var16 = 0;
+} else {
+var16 = var_pexprnode5->type->type_table[cltype17] == idtype18;
+}
+}
+if (!var16) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25187);
+show_backtrace(1);
+}
+var19 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var19->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var19, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var19:AAttrAssignExpr>*/;
+var_pexprnode1 = var19;
 var_node_list = var_pexprnode1;
-var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction639> */
-var18 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var17) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var18, var_node_list) /* push on <var_p:Parser>*/;
+var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction657> */
+var21 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var20) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var21, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction639#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction639__action(val* self, val* p0) {
-parser__ReduceAction639__action(self, p0);
+/* method parser#ReduceAction657#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction657__action(val* self, val* p0) {
+parser__ReduceAction657__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction640#action for (self: ReduceAction640, Parser) */
-void parser__ReduceAction640__action(val* self, val* p0) {
+/* method parser#ReduceAction659#action for (self: ReduceAction659, Parser) */
+void parser__ReduceAction659__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwlabelnode2 /* var tkwlabelnode2: nullable Object */;
-short int var3 /* : Bool */;
+val* var5 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var6 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var4 /* : Bool */;
-int cltype5;
-int idtype6;
-val* var7 /* : ALabel */;
-val* var_plabelnode1 /* var plabelnode1: nullable ALabel */;
-long var8 /* : Int */;
-long var9 /* : Int */;
+val* var_tassignnode4 /* var tassignnode4: nullable Object */;
+short int var7 /* : Bool */;
+int cltype8;
+int idtype9;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var10 /* : Bool */;
+int cltype11;
+int idtype12;
+val* var13 /* : AAttrAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
+long var14 /* : Int */;
+long var15 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var2;
-var_tkwlabelnode2 = var_nodearraylist1;
-/* <var_tkwlabelnode2:nullable Object> isa nullable TKwlabel */
-cltype = type_nullable_parser_nodes__TKwlabel.color;
-idtype = type_nullable_parser_nodes__TKwlabel.id;
-if(var_tkwlabelnode2 == NULL) {
-var3 = 1;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
+var_pexprnode2 = var5;
+var_tattridnode3 = var_nodearraylist2;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype >= var_tkwlabelnode2->type->table_size) {
-var3 = 0;
+if(cltype >= var_tattridnode3->type->table_size) {
+var6 = 0;
 } else {
-var3 = var_tkwlabelnode2->type->type_table[cltype] == idtype;
+var6 = var_tattridnode3->type->type_table[cltype] == idtype;
 }
 }
-if (!var3) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24722);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25209);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist2;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype5 = type_nullable_parser_nodes__TId.color;
-idtype6 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var4 = 1;
+var_tassignnode4 = var_nodearraylist3;
+/* <var_tassignnode4:nullable Object> isa nullable TAssign */
+cltype8 = type_nullable_parser_nodes__TAssign.color;
+idtype9 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode4 == NULL) {
+var7 = 1;
 } else {
-if(cltype5 >= var_tidnode3->type->table_size) {
-var4 = 0;
+if(cltype8 >= var_tassignnode4->type->table_size) {
+var7 = 0;
 } else {
-var4 = var_tidnode3->type->type_table[cltype5] == idtype6;
+var7 = var_tassignnode4->type->type_table[cltype8] == idtype9;
 }
 }
-if (!var4) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24724);
-exit(1);
-}
-var7 = NEW_parser_nodes__ALabel(&type_parser_nodes__ALabel);
-((void (*)(val*, val*, val*))(var7->class->vft[COLOR_parser_prod__ALabel__init_alabel]))(var7, var_tkwlabelnode2, var_tidnode3) /* init_alabel on <var7:ALabel>*/;
-CHECK_NEW_parser_nodes__ALabel(var7);
-var_plabelnode1 = var7;
-var_node_list = var_plabelnode1;
-var8 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction640> */
-var9 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var8) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var9, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction640#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction640__action(val* self, val* p0) {
-parser__ReduceAction640__action(self, p0);
-RET_LABEL:;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25211);
+show_backtrace(1);
 }
-/* method parser#ReduceAction641#action for (self: ReduceAction641, Parser) */
-void parser__ReduceAction641__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode4 /* var pexprnode4: nullable Object */;
-short int var2 /* : Bool */;
-int cltype;
-int idtype;
-val* var3 /* : AContinueExpr */;
-val* var4 /* : null */;
-val* var5 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AContinueExpr */;
-long var6 /* : Int */;
-long var7 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var1;
-var_pexprnode4 = var_nodearraylist1;
-/* <var_pexprnode4:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode4 == NULL) {
-var2 = 1;
+var_pexprnode5 = var_nodearraylist4;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype11 = type_nullable_parser_nodes__AExpr.color;
+idtype12 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var10 = 1;
 } else {
-if(cltype >= var_pexprnode4->type->table_size) {
-var2 = 0;
+if(cltype11 >= var_pexprnode5->type->table_size) {
+var10 = 0;
 } else {
-var2 = var_pexprnode4->type->type_table[cltype] == idtype;
+var10 = var_pexprnode5->type->type_table[cltype11] == idtype12;
 }
 }
-if (!var2) {
+if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24740);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25213);
+show_backtrace(1);
 }
-var3 = NEW_parser_nodes__AContinueExpr(&type_parser_nodes__AContinueExpr);
-var4 = NULL;
-var5 = NULL;
-((void (*)(val*, val*, val*, val*))(var3->class->vft[COLOR_parser_prod__AContinueExpr__init_acontinueexpr]))(var3, var4, var5, var_pexprnode4) /* init_acontinueexpr on <var3:AContinueExpr>*/;
-CHECK_NEW_parser_nodes__AContinueExpr(var3);
-var_pexprnode1 = var3;
+var13 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var13, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var13:AAttrAssignExpr>*/;
+var_pexprnode1 = var13;
 var_node_list = var_pexprnode1;
-var6 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction641> */
-var7 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var6) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var7, var_node_list) /* push on <var_p:Parser>*/;
+var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction659> */
+var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction641#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction641__action(val* self, val* p0) {
-parser__ReduceAction641__action(self, p0);
+/* method parser#ReduceAction659#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction659__action(val* self, val* p0) {
+parser__ReduceAction659__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction642#action for (self: ReduceAction642, Parser) */
-void parser__ReduceAction642__action(val* self, val* p0) {
+/* method parser#ReduceAction660#action for (self: ReduceAction660, Parser) */
+void parser__ReduceAction660__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var2 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var5 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
-short int var3 /* : Bool */;
+val* var6 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var4 /* : Bool */;
-int cltype5;
-int idtype6;
-val* var7 /* : AVardeclExpr */;
-val* var8 /* : null */;
-val* var9 /* : null */;
-val* var10 /* : null */;
-val* var11 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
-long var12 /* : Int */;
-long var13 /* : Int */;
+val* var_tassignnode4 /* var tassignnode4: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var11 /* : Bool */;
+int cltype12;
+int idtype13;
+val* var14 /* : AAttrAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
+long var15 /* : Int */;
+long var16 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var1;
+var_nodearraylist5 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var2;
-var_tkwvarnode2 = var_nodearraylist1;
-/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
-cltype = type_nullable_parser_nodes__TKwvar.color;
-idtype = type_nullable_parser_nodes__TKwvar.id;
-if(var_tkwvarnode2 == NULL) {
-var3 = 1;
-} else {
-if(cltype >= var_tkwvarnode2->type->table_size) {
-var3 = 0;
-} else {
-var3 = var_tkwvarnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var3) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24758);
-exit(1);
-}
-var_tidnode3 = var_nodearraylist2;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype5 = type_nullable_parser_nodes__TId.color;
-idtype6 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var4 = 1;
-} else {
-if(cltype5 >= var_tidnode3->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_tidnode3->type->type_table[cltype5] == idtype6;
-}
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24760);
-exit(1);
-}
-var7 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
-var8 = NULL;
-var9 = NULL;
-var10 = NULL;
-var11 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var7, var_tkwvarnode2, var_tidnode3, var8, var9, var10, var11) /* init_avardeclexpr on <var7:AVardeclExpr>*/;
-CHECK_NEW_parser_nodes__AVardeclExpr(var7);
-var_pexprnode1 = var7;
-var_node_list = var_pexprnode1;
-var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction642> */
-var13 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var12) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var13, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction642#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction642__action(val* self, val* p0) {
-parser__ReduceAction642__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction643#action for (self: ReduceAction643, Parser) */
-void parser__ReduceAction643__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
-short int var4 /* : Bool */;
-int cltype;
-int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var5 /* : Bool */;
-int cltype6;
-int idtype7;
-val* var_pannotationsnode7 /* var pannotationsnode7: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var11 /* : AVardeclExpr */;
-val* var12 /* : null */;
-val* var13 /* : null */;
-val* var14 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
-long var15 /* : Int */;
-long var16 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist4 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var_tkwvarnode2 = var_nodearraylist1;
-/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
-cltype = type_nullable_parser_nodes__TKwvar.color;
-idtype = type_nullable_parser_nodes__TKwvar.id;
-if(var_tkwvarnode2 == NULL) {
-var4 = 1;
+var_nodearraylist3 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var5;
+var6 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var6->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var6) /* init_aimplicitselfexpr on <var6:AImplicitSelfExpr>*/;
+var_pexprnode2 = var6;
+var_tattridnode3 = var_nodearraylist3;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var7 = 1;
 } else {
-if(cltype >= var_tkwvarnode2->type->table_size) {
-var4 = 0;
+if(cltype >= var_tattridnode3->type->table_size) {
+var7 = 0;
 } else {
-var4 = var_tkwvarnode2->type->type_table[cltype] == idtype;
+var7 = var_tattridnode3->type->type_table[cltype] == idtype;
 }
 }
-if (!var4) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24782);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25236);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist2;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype6 = type_nullable_parser_nodes__TId.color;
-idtype7 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var5 = 1;
+var_tassignnode4 = var_nodearraylist4;
+/* <var_tassignnode4:nullable Object> isa nullable TAssign */
+cltype9 = type_nullable_parser_nodes__TAssign.color;
+idtype10 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode4 == NULL) {
+var8 = 1;
 } else {
-if(cltype6 >= var_tidnode3->type->table_size) {
-var5 = 0;
+if(cltype9 >= var_tassignnode4->type->table_size) {
+var8 = 0;
 } else {
-var5 = var_tidnode3->type->type_table[cltype6] == idtype7;
+var8 = var_tassignnode4->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var5) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24784);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25238);
+show_backtrace(1);
 }
-var_pannotationsnode7 = var_nodearraylist3;
-/* <var_pannotationsnode7:nullable Object> isa nullable AAnnotations */
-cltype9 = type_nullable_parser_nodes__AAnnotations.color;
-idtype10 = type_nullable_parser_nodes__AAnnotations.id;
-if(var_pannotationsnode7 == NULL) {
-var8 = 1;
+var_pexprnode5 = var_nodearraylist5;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype12 = type_nullable_parser_nodes__AExpr.color;
+idtype13 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var11 = 1;
 } else {
-if(cltype9 >= var_pannotationsnode7->type->table_size) {
-var8 = 0;
+if(cltype12 >= var_pexprnode5->type->table_size) {
+var11 = 0;
 } else {
-var8 = var_pannotationsnode7->type->type_table[cltype9] == idtype10;
+var11 = var_pexprnode5->type->type_table[cltype12] == idtype13;
 }
 }
-if (!var8) {
+if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24786);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25240);
+show_backtrace(1);
 }
-var11 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
-var12 = NULL;
-var13 = NULL;
-var14 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var11, var_tkwvarnode2, var_tidnode3, var12, var13, var14, var_pannotationsnode7) /* init_avardeclexpr on <var11:AVardeclExpr>*/;
-CHECK_NEW_parser_nodes__AVardeclExpr(var11);
-var_pexprnode1 = var11;
+var14 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var14, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var14:AAttrAssignExpr>*/;
+var_pexprnode1 = var14;
 var_node_list = var_pexprnode1;
-var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction643> */
+var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction660> */
 var16 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var15) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var16, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction643#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction643__action(val* self, val* p0) {
-parser__ReduceAction643__action(self, p0);
+/* method parser#ReduceAction660#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction660__action(val* self, val* p0) {
+parser__ReduceAction660__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction644#action for (self: ReduceAction644, Parser) */
-void parser__ReduceAction644__action(val* self, val* p0) {
+/* method parser#ReduceAction662#action for (self: ReduceAction662, Parser) */
+void parser__ReduceAction662__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var3 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var7 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
-short int var4 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var8 /* : Bool */;
 int cltype;
 int idtype;
 val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var5 /* : Bool */;
-int cltype6;
-int idtype7;
-val* var_ptypenode4 /* var ptypenode4: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var11 /* : AVardeclExpr */;
-val* var12 /* : null */;
-val* var13 /* : null */;
-val* var14 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
-long var15 /* : Int */;
-long var16 /* : Int */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
+val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+val* var_pexprnode6 /* var pexprnode6: nullable Object */;
+short int var18 /* : Bool */;
+int cltype19;
+int idtype20;
+val* var21 /* : ACallAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+long var22 /* : Int */;
+long var23 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
+var_nodearraylist7 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist6 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var_tkwvarnode2 = var_nodearraylist1;
-/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
-cltype = type_nullable_parser_nodes__TKwvar.color;
-idtype = type_nullable_parser_nodes__TKwvar.id;
-if(var_tkwvarnode2 == NULL) {
-var4 = 1;
+var_nodearraylist5 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var7;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var8 = 1;
 } else {
-if(cltype >= var_tkwvarnode2->type->table_size) {
-var4 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var8 = 0;
 } else {
-var4 = var_tkwvarnode2->type->type_table[cltype] == idtype;
+var8 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var4) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24808);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25264);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist2;
+var_tidnode3 = var_nodearraylist4;
 /* <var_tidnode3:nullable Object> isa nullable TId */
-cltype6 = type_nullable_parser_nodes__TId.color;
-idtype7 = type_nullable_parser_nodes__TId.id;
+cltype10 = type_nullable_parser_nodes__TId.color;
+idtype11 = type_nullable_parser_nodes__TId.id;
 if(var_tidnode3 == NULL) {
-var5 = 1;
+var9 = 1;
 } else {
-if(cltype6 >= var_tidnode3->type->table_size) {
-var5 = 0;
+if(cltype10 >= var_tidnode3->type->table_size) {
+var9 = 0;
 } else {
-var5 = var_tidnode3->type->type_table[cltype6] == idtype7;
+var9 = var_tidnode3->type->type_table[cltype10] == idtype11;
 }
 }
-if (!var5) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24810);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25266);
+show_backtrace(1);
 }
-var_ptypenode4 = var_nodearraylist3;
-/* <var_ptypenode4:nullable Object> isa nullable AType */
-cltype9 = type_nullable_parser_nodes__AType.color;
-idtype10 = type_nullable_parser_nodes__AType.id;
-if(var_ptypenode4 == NULL) {
-var8 = 1;
+var_pexprsnode4 = var_nodearraylist5;
+/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
+cltype13 = type_nullable_parser_nodes__AExprs.color;
+idtype14 = type_nullable_parser_nodes__AExprs.id;
+if(var_pexprsnode4 == NULL) {
+var12 = 1;
 } else {
-if(cltype9 >= var_ptypenode4->type->table_size) {
-var8 = 0;
+if(cltype13 >= var_pexprsnode4->type->table_size) {
+var12 = 0;
 } else {
-var8 = var_ptypenode4->type->type_table[cltype9] == idtype10;
+var12 = var_pexprsnode4->type->type_table[cltype13] == idtype14;
 }
 }
-if (!var8) {
+if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24812);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25268);
+show_backtrace(1);
 }
-var11 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
-var12 = NULL;
-var13 = NULL;
-var14 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var11, var_tkwvarnode2, var_tidnode3, var_ptypenode4, var12, var13, var14) /* init_avardeclexpr on <var11:AVardeclExpr>*/;
-CHECK_NEW_parser_nodes__AVardeclExpr(var11);
-var_pexprnode1 = var11;
-var_node_list = var_pexprnode1;
-var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction644> */
-var16 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var15) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var16, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction644#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction644__action(val* self, val* p0) {
-parser__ReduceAction644__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction645#action for (self: ReduceAction645, Parser) */
-void parser__ReduceAction645__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
-short int var5 /* : Bool */;
-int cltype;
-int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var_ptypenode4 /* var ptypenode4: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var_pannotationsnode7 /* var pannotationsnode7: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
-val* var15 /* : AVardeclExpr */;
-val* var16 /* : null */;
-val* var17 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
-long var18 /* : Int */;
-long var19 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var_tkwvarnode2 = var_nodearraylist1;
-/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
-cltype = type_nullable_parser_nodes__TKwvar.color;
-idtype = type_nullable_parser_nodes__TKwvar.id;
-if(var_tkwvarnode2 == NULL) {
-var5 = 1;
-} else {
-if(cltype >= var_tkwvarnode2->type->table_size) {
-var5 = 0;
-} else {
-var5 = var_tkwvarnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var5) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24835);
-exit(1);
-}
-var_tidnode3 = var_nodearraylist2;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype7 = type_nullable_parser_nodes__TId.color;
-idtype8 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var6 = 1;
-} else {
-if(cltype7 >= var_tidnode3->type->table_size) {
-var6 = 0;
-} else {
-var6 = var_tidnode3->type->type_table[cltype7] == idtype8;
-}
-}
-if (!var6) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24837);
-exit(1);
-}
-var_ptypenode4 = var_nodearraylist4;
-/* <var_ptypenode4:nullable Object> isa nullable AType */
-cltype10 = type_nullable_parser_nodes__AType.color;
-idtype11 = type_nullable_parser_nodes__AType.id;
-if(var_ptypenode4 == NULL) {
-var9 = 1;
+var_tassignnode5 = var_nodearraylist6;
+/* <var_tassignnode5:nullable Object> isa nullable TAssign */
+cltype16 = type_nullable_parser_nodes__TAssign.color;
+idtype17 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode5 == NULL) {
+var15 = 1;
 } else {
-if(cltype10 >= var_ptypenode4->type->table_size) {
-var9 = 0;
+if(cltype16 >= var_tassignnode5->type->table_size) {
+var15 = 0;
 } else {
-var9 = var_ptypenode4->type->type_table[cltype10] == idtype11;
+var15 = var_tassignnode5->type->type_table[cltype16] == idtype17;
 }
 }
-if (!var9) {
+if (!var15) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24839);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25270);
+show_backtrace(1);
 }
-var_pannotationsnode7 = var_nodearraylist3;
-/* <var_pannotationsnode7:nullable Object> isa nullable AAnnotations */
-cltype13 = type_nullable_parser_nodes__AAnnotations.color;
-idtype14 = type_nullable_parser_nodes__AAnnotations.id;
-if(var_pannotationsnode7 == NULL) {
-var12 = 1;
+var_pexprnode6 = var_nodearraylist7;
+/* <var_pexprnode6:nullable Object> isa nullable AExpr */
+cltype19 = type_nullable_parser_nodes__AExpr.color;
+idtype20 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode6 == NULL) {
+var18 = 1;
 } else {
-if(cltype13 >= var_pannotationsnode7->type->table_size) {
-var12 = 0;
+if(cltype19 >= var_pexprnode6->type->table_size) {
+var18 = 0;
 } else {
-var12 = var_pannotationsnode7->type->type_table[cltype13] == idtype14;
+var18 = var_pexprnode6->type->type_table[cltype19] == idtype20;
 }
 }
-if (!var12) {
+if (!var18) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24841);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25272);
+show_backtrace(1);
 }
-var15 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
-var16 = NULL;
-var17 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var15, var_tkwvarnode2, var_tidnode3, var_ptypenode4, var16, var17, var_pannotationsnode7) /* init_avardeclexpr on <var15:AVardeclExpr>*/;
-CHECK_NEW_parser_nodes__AVardeclExpr(var15);
-var_pexprnode1 = var15;
+var21 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var21, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var21:ACallAssignExpr>*/;
+var_pexprnode1 = var21;
 var_node_list = var_pexprnode1;
-var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction645> */
-var19 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var18) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var19, var_node_list) /* push on <var_p:Parser>*/;
+var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction662> */
+var23 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var22) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var23, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction645#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction645__action(val* self, val* p0) {
-parser__ReduceAction645__action(self, p0);
+/* method parser#ReduceAction662#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction662__action(val* self, val* p0) {
+parser__ReduceAction662__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction646#action for (self: ReduceAction646, Parser) */
-void parser__ReduceAction646__action(val* self, val* p0) {
+/* method parser#ReduceAction663#action for (self: ReduceAction663, Parser) */
+void parser__ReduceAction663__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var2 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var3 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
+val* var5 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tidnode3 /* var tidnode3: nullable Object */;
 short int var6 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
+val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
 short int var7 /* : Bool */;
 int cltype8;
 int idtype9;
@@ -1631,60 +1307,59 @@ val* var_pexprnode6 /* var pexprnode6: nullable Object */;
 short int var13 /* : Bool */;
 int cltype14;
 int idtype15;
-val* var16 /* : AVardeclExpr */;
-val* var17 /* : null */;
-val* var18 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
-long var19 /* : Int */;
-long var20 /* : Int */;
+val* var16 /* : ACallAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+long var17 /* : Int */;
+long var18 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var3;
+var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var5;
-var_tkwvarnode2 = var_nodearraylist1;
-/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
-cltype = type_nullable_parser_nodes__TKwvar.color;
-idtype = type_nullable_parser_nodes__TKwvar.id;
-if(var_tkwvarnode2 == NULL) {
+var_nodearraylist1 = var4;
+var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
+var_pexprnode2 = var5;
+var_tidnode3 = var_nodearraylist1;
+/* <var_tidnode3:nullable Object> isa nullable TId */
+cltype = type_nullable_parser_nodes__TId.color;
+idtype = type_nullable_parser_nodes__TId.id;
+if(var_tidnode3 == NULL) {
 var6 = 1;
 } else {
-if(cltype >= var_tkwvarnode2->type->table_size) {
+if(cltype >= var_tidnode3->type->table_size) {
 var6 = 0;
 } else {
-var6 = var_tkwvarnode2->type->type_table[cltype] == idtype;
+var6 = var_tidnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24865);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25295);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist2;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype8 = type_nullable_parser_nodes__TId.color;
-idtype9 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
+var_pexprsnode4 = var_nodearraylist2;
+/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
+cltype8 = type_nullable_parser_nodes__AExprs.color;
+idtype9 = type_nullable_parser_nodes__AExprs.id;
+if(var_pexprsnode4 == NULL) {
 var7 = 1;
 } else {
-if(cltype8 >= var_tidnode3->type->table_size) {
+if(cltype8 >= var_pexprsnode4->type->table_size) {
 var7 = 0;
 } else {
-var7 = var_tidnode3->type->type_table[cltype8] == idtype9;
+var7 = var_pexprsnode4->type->type_table[cltype8] == idtype9;
 }
 }
 if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24867);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25297);
+show_backtrace(1);
 }
 var_tassignnode5 = var_nodearraylist3;
 /* <var_tassignnode5:nullable Object> isa nullable TAssign */
@@ -1701,10 +1376,10 @@ var10 = var_tassignnode5->type->type_table[cltype11] == idtype12;
 }
 if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24869);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25299);
+show_backtrace(1);
 }
-var_pexprnode6 = var_nodearraylist5;
+var_pexprnode6 = var_nodearraylist4;
 /* <var_pexprnode6:nullable Object> isa nullable AExpr */
 cltype14 = type_nullable_parser_nodes__AExpr.color;
 idtype15 = type_nullable_parser_nodes__AExpr.id;
@@ -1719,541 +1394,504 @@ var13 = var_pexprnode6->type->type_table[cltype14] == idtype15;
 }
 if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24871);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25301);
+show_backtrace(1);
 }
-var16 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
-var17 = NULL;
-var18 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var16, var_tkwvarnode2, var_tidnode3, var17, var_tassignnode5, var_pexprnode6, var18) /* init_avardeclexpr on <var16:AVardeclExpr>*/;
-CHECK_NEW_parser_nodes__AVardeclExpr(var16);
+var16 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var16, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var16:ACallAssignExpr>*/;
 var_pexprnode1 = var16;
 var_node_list = var_pexprnode1;
-var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction646> */
-var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
+var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction663> */
+var18 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var17) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var18, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction646#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction646__action(val* self, val* p0) {
-parser__ReduceAction646__action(self, p0);
+/* method parser#ReduceAction663#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction663__action(val* self, val* p0) {
+parser__ReduceAction663__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction647#action for (self: ReduceAction647, Parser) */
-void parser__ReduceAction647__action(val* self, val* p0) {
+/* method parser#ReduceAction664#action for (self: ReduceAction664, Parser) */
+void parser__ReduceAction664__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var4 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var5 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var6 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var8 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
-short int var7 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var9 /* : Bool */;
 int cltype;
 int idtype;
 val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
+short int var10 /* : Bool */;
+int cltype11;
+int idtype12;
+val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
+short int var13 /* : Bool */;
+int cltype14;
+int idtype15;
 val* var_tassignnode5 /* var tassignnode5: nullable Object */;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
+short int var16 /* : Bool */;
+int cltype17;
+int idtype18;
 val* var_pexprnode6 /* var pexprnode6: nullable Object */;
-short int var14 /* : Bool */;
-int cltype15;
-int idtype16;
-val* var_pannotationsnode7 /* var pannotationsnode7: nullable Object */;
-short int var17 /* : Bool */;
-int cltype18;
-int idtype19;
-val* var20 /* : AVardeclExpr */;
-val* var21 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
-long var22 /* : Int */;
+short int var19 /* : Bool */;
+int cltype20;
+int idtype21;
+val* var22 /* : ACallAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
 long var23 /* : Int */;
+long var24 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var1;
+var_nodearraylist8 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var2;
+var_nodearraylist7 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var3;
+var_nodearraylist6 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var4;
+var_nodearraylist5 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var5;
+var_nodearraylist4 = var5;
 var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var6;
-var_tkwvarnode2 = var_nodearraylist1;
-/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
-cltype = type_nullable_parser_nodes__TKwvar.color;
-idtype = type_nullable_parser_nodes__TKwvar.id;
-if(var_tkwvarnode2 == NULL) {
-var7 = 1;
-} else {
-if(cltype >= var_tkwvarnode2->type->table_size) {
-var7 = 0;
+var_nodearraylist3 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var8;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var9 = 1;
 } else {
-var7 = var_tkwvarnode2->type->type_table[cltype] == idtype;
+if(cltype >= var_pexprnode2->type->table_size) {
+var9 = 0;
+} else {
+var9 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var7) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24896);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25327);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist2;
+var_tidnode3 = var_nodearraylist5;
 /* <var_tidnode3:nullable Object> isa nullable TId */
-cltype9 = type_nullable_parser_nodes__TId.color;
-idtype10 = type_nullable_parser_nodes__TId.id;
+cltype11 = type_nullable_parser_nodes__TId.color;
+idtype12 = type_nullable_parser_nodes__TId.id;
 if(var_tidnode3 == NULL) {
-var8 = 1;
+var10 = 1;
 } else {
-if(cltype9 >= var_tidnode3->type->table_size) {
-var8 = 0;
+if(cltype11 >= var_tidnode3->type->table_size) {
+var10 = 0;
 } else {
-var8 = var_tidnode3->type->type_table[cltype9] == idtype10;
+var10 = var_tidnode3->type->type_table[cltype11] == idtype12;
 }
 }
-if (!var8) {
+if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24898);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25329);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist4;
-/* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype12 = type_nullable_parser_nodes__TAssign.color;
-idtype13 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode5 == NULL) {
-var11 = 1;
+var_pexprsnode4 = var_nodearraylist6;
+/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
+cltype14 = type_nullable_parser_nodes__AExprs.color;
+idtype15 = type_nullable_parser_nodes__AExprs.id;
+if(var_pexprsnode4 == NULL) {
+var13 = 1;
 } else {
-if(cltype12 >= var_tassignnode5->type->table_size) {
-var11 = 0;
+if(cltype14 >= var_pexprsnode4->type->table_size) {
+var13 = 0;
 } else {
-var11 = var_tassignnode5->type->type_table[cltype12] == idtype13;
+var13 = var_pexprsnode4->type->type_table[cltype14] == idtype15;
 }
 }
-if (!var11) {
+if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24900);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25331);
+show_backtrace(1);
 }
-var_pexprnode6 = var_nodearraylist6;
-/* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype15 = type_nullable_parser_nodes__AExpr.color;
-idtype16 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode6 == NULL) {
-var14 = 1;
+var_tassignnode5 = var_nodearraylist7;
+/* <var_tassignnode5:nullable Object> isa nullable TAssign */
+cltype17 = type_nullable_parser_nodes__TAssign.color;
+idtype18 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode5 == NULL) {
+var16 = 1;
 } else {
-if(cltype15 >= var_pexprnode6->type->table_size) {
-var14 = 0;
+if(cltype17 >= var_tassignnode5->type->table_size) {
+var16 = 0;
 } else {
-var14 = var_pexprnode6->type->type_table[cltype15] == idtype16;
+var16 = var_tassignnode5->type->type_table[cltype17] == idtype18;
 }
 }
-if (!var14) {
+if (!var16) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24902);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25333);
+show_backtrace(1);
 }
-var_pannotationsnode7 = var_nodearraylist3;
-/* <var_pannotationsnode7:nullable Object> isa nullable AAnnotations */
-cltype18 = type_nullable_parser_nodes__AAnnotations.color;
-idtype19 = type_nullable_parser_nodes__AAnnotations.id;
-if(var_pannotationsnode7 == NULL) {
-var17 = 1;
+var_pexprnode6 = var_nodearraylist8;
+/* <var_pexprnode6:nullable Object> isa nullable AExpr */
+cltype20 = type_nullable_parser_nodes__AExpr.color;
+idtype21 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode6 == NULL) {
+var19 = 1;
 } else {
-if(cltype18 >= var_pannotationsnode7->type->table_size) {
-var17 = 0;
+if(cltype20 >= var_pexprnode6->type->table_size) {
+var19 = 0;
 } else {
-var17 = var_pannotationsnode7->type->type_table[cltype18] == idtype19;
+var19 = var_pexprnode6->type->type_table[cltype20] == idtype21;
 }
 }
-if (!var17) {
+if (!var19) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24904);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25335);
+show_backtrace(1);
 }
-var20 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
-var21 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var20->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var20, var_tkwvarnode2, var_tidnode3, var21, var_tassignnode5, var_pexprnode6, var_pannotationsnode7) /* init_avardeclexpr on <var20:AVardeclExpr>*/;
-CHECK_NEW_parser_nodes__AVardeclExpr(var20);
-var_pexprnode1 = var20;
+var22 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var22, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var22:ACallAssignExpr>*/;
+var_pexprnode1 = var22;
 var_node_list = var_pexprnode1;
-var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction647> */
-var23 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var22) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var23, var_node_list) /* push on <var_p:Parser>*/;
+var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction664> */
+var24 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var23) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var24, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction647#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction647__action(val* self, val* p0) {
-parser__ReduceAction647__action(self, p0);
+/* method parser#ReduceAction664#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction664__action(val* self, val* p0) {
+parser__ReduceAction664__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction648#action for (self: ReduceAction648, Parser) */
-void parser__ReduceAction648__action(val* self, val* p0) {
+/* method parser#ReduceAction665#action for (self: ReduceAction665, Parser) */
+void parser__ReduceAction665__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var4 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var5 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var6 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var8 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var9 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
-short int var7 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var10 /* : Bool */;
 int cltype;
 int idtype;
 val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var_ptypenode4 /* var ptypenode4: nullable Object */;
 short int var11 /* : Bool */;
 int cltype12;
 int idtype13;
-val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
 short int var14 /* : Bool */;
 int cltype15;
 int idtype16;
-val* var_pexprnode6 /* var pexprnode6: nullable Object */;
+val* var_tassignnode5 /* var tassignnode5: nullable Object */;
 short int var17 /* : Bool */;
 int cltype18;
 int idtype19;
-val* var20 /* : AVardeclExpr */;
-val* var21 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
-long var22 /* : Int */;
-long var23 /* : Int */;
+val* var_pexprnode6 /* var pexprnode6: nullable Object */;
+short int var20 /* : Bool */;
+int cltype21;
+int idtype22;
+val* var23 /* : ACallAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+long var24 /* : Int */;
+long var25 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var1;
+var_nodearraylist9 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var2;
+var_nodearraylist8 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var3;
+var_nodearraylist7 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var4;
+var_nodearraylist6 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var5;
+var_nodearraylist5 = var5;
 var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var6;
-var_tkwvarnode2 = var_nodearraylist1;
-/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
-cltype = type_nullable_parser_nodes__TKwvar.color;
-idtype = type_nullable_parser_nodes__TKwvar.id;
-if(var_tkwvarnode2 == NULL) {
-var7 = 1;
+var_nodearraylist4 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var8;
+var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var9;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var10 = 1;
 } else {
-if(cltype >= var_tkwvarnode2->type->table_size) {
-var7 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var10 = 0;
 } else {
-var7 = var_tkwvarnode2->type->type_table[cltype] == idtype;
+var10 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var7) {
+if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24929);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25362);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist2;
+var_tidnode3 = var_nodearraylist6;
 /* <var_tidnode3:nullable Object> isa nullable TId */
-cltype9 = type_nullable_parser_nodes__TId.color;
-idtype10 = type_nullable_parser_nodes__TId.id;
+cltype12 = type_nullable_parser_nodes__TId.color;
+idtype13 = type_nullable_parser_nodes__TId.id;
 if(var_tidnode3 == NULL) {
-var8 = 1;
-} else {
-if(cltype9 >= var_tidnode3->type->table_size) {
-var8 = 0;
-} else {
-var8 = var_tidnode3->type->type_table[cltype9] == idtype10;
-}
-}
-if (!var8) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24931);
-exit(1);
-}
-var_ptypenode4 = var_nodearraylist3;
-/* <var_ptypenode4:nullable Object> isa nullable AType */
-cltype12 = type_nullable_parser_nodes__AType.color;
-idtype13 = type_nullable_parser_nodes__AType.id;
-if(var_ptypenode4 == NULL) {
 var11 = 1;
 } else {
-if(cltype12 >= var_ptypenode4->type->table_size) {
+if(cltype12 >= var_tidnode3->type->table_size) {
 var11 = 0;
 } else {
-var11 = var_ptypenode4->type->type_table[cltype12] == idtype13;
+var11 = var_tidnode3->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24933);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25364);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist4;
-/* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype15 = type_nullable_parser_nodes__TAssign.color;
-idtype16 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode5 == NULL) {
+var_pexprsnode4 = var_nodearraylist7;
+/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
+cltype15 = type_nullable_parser_nodes__AExprs.color;
+idtype16 = type_nullable_parser_nodes__AExprs.id;
+if(var_pexprsnode4 == NULL) {
 var14 = 1;
 } else {
-if(cltype15 >= var_tassignnode5->type->table_size) {
+if(cltype15 >= var_pexprsnode4->type->table_size) {
 var14 = 0;
 } else {
-var14 = var_tassignnode5->type->type_table[cltype15] == idtype16;
+var14 = var_pexprsnode4->type->type_table[cltype15] == idtype16;
 }
 }
 if (!var14) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24935);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25366);
+show_backtrace(1);
 }
-var_pexprnode6 = var_nodearraylist6;
-/* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype18 = type_nullable_parser_nodes__AExpr.color;
-idtype19 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode6 == NULL) {
+var_tassignnode5 = var_nodearraylist8;
+/* <var_tassignnode5:nullable Object> isa nullable TAssign */
+cltype18 = type_nullable_parser_nodes__TAssign.color;
+idtype19 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode5 == NULL) {
 var17 = 1;
 } else {
-if(cltype18 >= var_pexprnode6->type->table_size) {
+if(cltype18 >= var_tassignnode5->type->table_size) {
 var17 = 0;
 } else {
-var17 = var_pexprnode6->type->type_table[cltype18] == idtype19;
+var17 = var_tassignnode5->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24937);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25368);
+show_backtrace(1);
 }
-var20 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
-var21 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var20->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var20, var_tkwvarnode2, var_tidnode3, var_ptypenode4, var_tassignnode5, var_pexprnode6, var21) /* init_avardeclexpr on <var20:AVardeclExpr>*/;
-CHECK_NEW_parser_nodes__AVardeclExpr(var20);
-var_pexprnode1 = var20;
-var_node_list = var_pexprnode1;
-var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction648> */
-var23 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var22) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var23, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
+var_pexprnode6 = var_nodearraylist9;
+/* <var_pexprnode6:nullable Object> isa nullable AExpr */
+cltype21 = type_nullable_parser_nodes__AExpr.color;
+idtype22 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode6 == NULL) {
+var20 = 1;
+} else {
+if(cltype21 >= var_pexprnode6->type->table_size) {
+var20 = 0;
+} else {
+var20 = var_pexprnode6->type->type_table[cltype21] == idtype22;
 }
-/* method parser#ReduceAction648#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction648__action(val* self, val* p0) {
-parser__ReduceAction648__action(self, p0);
+}
+if (!var20) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25370);
+show_backtrace(1);
+}
+var23 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var23->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var23, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var23:ACallAssignExpr>*/;
+var_pexprnode1 = var23;
+var_node_list = var_pexprnode1;
+var24 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction665> */
+var25 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var24) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var25, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction665#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction665__action(val* self, val* p0) {
+parser__ReduceAction665__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction649#action for (self: ReduceAction649, Parser) */
-void parser__ReduceAction649__action(val* self, val* p0) {
+/* method parser#ReduceAction667#action for (self: ReduceAction667, Parser) */
+void parser__ReduceAction667__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var3 /* : nullable Object */;
 val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var5 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwvarnode2 /* var tkwvarnode2: nullable Object */;
-short int var8 /* : Bool */;
+val* var6 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tidnode3 /* var tidnode3: nullable Object */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var_ptypenode4 /* var ptypenode4: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
+val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
 val* var_tassignnode5 /* var tassignnode5: nullable Object */;
-short int var15 /* : Bool */;
-int cltype16;
-int idtype17;
+short int var11 /* : Bool */;
+int cltype12;
+int idtype13;
 val* var_pexprnode6 /* var pexprnode6: nullable Object */;
-short int var18 /* : Bool */;
-int cltype19;
-int idtype20;
-val* var_pannotationsnode7 /* var pannotationsnode7: nullable Object */;
-short int var21 /* : Bool */;
-int cltype22;
-int idtype23;
-val* var24 /* : AVardeclExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AVardeclExpr */;
-long var25 /* : Int */;
-long var26 /* : Int */;
+short int var14 /* : Bool */;
+int cltype15;
+int idtype16;
+val* var17 /* : ACallAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+long var18 /* : Int */;
+long var19 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var1;
+var_nodearraylist5 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var2;
+var_nodearraylist4 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var3;
+var_nodearraylist3 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var4;
+var_nodearraylist2 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var7;
-var_tkwvarnode2 = var_nodearraylist1;
-/* <var_tkwvarnode2:nullable Object> isa nullable TKwvar */
-cltype = type_nullable_parser_nodes__TKwvar.color;
-idtype = type_nullable_parser_nodes__TKwvar.id;
-if(var_tkwvarnode2 == NULL) {
-var8 = 1;
-} else {
-if(cltype >= var_tkwvarnode2->type->table_size) {
-var8 = 0;
-} else {
-var8 = var_tkwvarnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var8) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24963);
-exit(1);
-}
+var_nodearraylist1 = var5;
+var6 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var6->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var6) /* init_aimplicitselfexpr on <var6:AImplicitSelfExpr>*/;
+var_pexprnode2 = var6;
 var_tidnode3 = var_nodearraylist2;
 /* <var_tidnode3:nullable Object> isa nullable TId */
-cltype10 = type_nullable_parser_nodes__TId.color;
-idtype11 = type_nullable_parser_nodes__TId.id;
+cltype = type_nullable_parser_nodes__TId.color;
+idtype = type_nullable_parser_nodes__TId.id;
 if(var_tidnode3 == NULL) {
-var9 = 1;
+var7 = 1;
 } else {
-if(cltype10 >= var_tidnode3->type->table_size) {
-var9 = 0;
+if(cltype >= var_tidnode3->type->table_size) {
+var7 = 0;
 } else {
-var9 = var_tidnode3->type->type_table[cltype10] == idtype11;
+var7 = var_tidnode3->type->type_table[cltype] == idtype;
 }
 }
-if (!var9) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24965);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25394);
+show_backtrace(1);
 }
-var_ptypenode4 = var_nodearraylist4;
-/* <var_ptypenode4:nullable Object> isa nullable AType */
-cltype13 = type_nullable_parser_nodes__AType.color;
-idtype14 = type_nullable_parser_nodes__AType.id;
-if(var_ptypenode4 == NULL) {
-var12 = 1;
+var_pexprsnode4 = var_nodearraylist3;
+/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
+cltype9 = type_nullable_parser_nodes__AExprs.color;
+idtype10 = type_nullable_parser_nodes__AExprs.id;
+if(var_pexprsnode4 == NULL) {
+var8 = 1;
 } else {
-if(cltype13 >= var_ptypenode4->type->table_size) {
-var12 = 0;
+if(cltype9 >= var_pexprsnode4->type->table_size) {
+var8 = 0;
 } else {
-var12 = var_ptypenode4->type->type_table[cltype13] == idtype14;
+var8 = var_pexprsnode4->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var12) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24967);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25396);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist5;
+var_tassignnode5 = var_nodearraylist4;
 /* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype16 = type_nullable_parser_nodes__TAssign.color;
-idtype17 = type_nullable_parser_nodes__TAssign.id;
+cltype12 = type_nullable_parser_nodes__TAssign.color;
+idtype13 = type_nullable_parser_nodes__TAssign.id;
 if(var_tassignnode5 == NULL) {
-var15 = 1;
+var11 = 1;
 } else {
-if(cltype16 >= var_tassignnode5->type->table_size) {
-var15 = 0;
+if(cltype12 >= var_tassignnode5->type->table_size) {
+var11 = 0;
 } else {
-var15 = var_tassignnode5->type->type_table[cltype16] == idtype17;
+var11 = var_tassignnode5->type->type_table[cltype12] == idtype13;
 }
 }
-if (!var15) {
+if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24969);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25398);
+show_backtrace(1);
 }
-var_pexprnode6 = var_nodearraylist7;
+var_pexprnode6 = var_nodearraylist5;
 /* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype19 = type_nullable_parser_nodes__AExpr.color;
-idtype20 = type_nullable_parser_nodes__AExpr.id;
+cltype15 = type_nullable_parser_nodes__AExpr.color;
+idtype16 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode6 == NULL) {
-var18 = 1;
-} else {
-if(cltype19 >= var_pexprnode6->type->table_size) {
-var18 = 0;
-} else {
-var18 = var_pexprnode6->type->type_table[cltype19] == idtype20;
-}
-}
-if (!var18) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24971);
-exit(1);
-}
-var_pannotationsnode7 = var_nodearraylist3;
-/* <var_pannotationsnode7:nullable Object> isa nullable AAnnotations */
-cltype22 = type_nullable_parser_nodes__AAnnotations.color;
-idtype23 = type_nullable_parser_nodes__AAnnotations.id;
-if(var_pannotationsnode7 == NULL) {
-var21 = 1;
+var14 = 1;
 } else {
-if(cltype22 >= var_pannotationsnode7->type->table_size) {
-var21 = 0;
+if(cltype15 >= var_pexprnode6->type->table_size) {
+var14 = 0;
 } else {
-var21 = var_pannotationsnode7->type->type_table[cltype22] == idtype23;
+var14 = var_pexprnode6->type->type_table[cltype15] == idtype16;
 }
 }
-if (!var21) {
+if (!var14) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24973);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25400);
+show_backtrace(1);
 }
-var24 = NEW_parser_nodes__AVardeclExpr(&type_parser_nodes__AVardeclExpr);
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var24->class->vft[COLOR_parser_prod__AVardeclExpr__init_avardeclexpr]))(var24, var_tkwvarnode2, var_tidnode3, var_ptypenode4, var_tassignnode5, var_pexprnode6, var_pannotationsnode7) /* init_avardeclexpr on <var24:AVardeclExpr>*/;
-CHECK_NEW_parser_nodes__AVardeclExpr(var24);
-var_pexprnode1 = var24;
+var17 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var17, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var17:ACallAssignExpr>*/;
+var_pexprnode1 = var17;
 var_node_list = var_pexprnode1;
-var25 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction649> */
-var26 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var25) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var26, var_node_list) /* push on <var_p:Parser>*/;
+var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction667> */
+var19 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var18) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var19, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction649#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction649__action(val* self, val* p0) {
-parser__ReduceAction649__action(self, p0);
+/* method parser#ReduceAction667#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction667__action(val* self, val* p0) {
+parser__ReduceAction667__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction650#action for (self: ReduceAction650, Parser) */
-void parser__ReduceAction650__action(val* self, val* p0) {
+/* method parser#ReduceAction668#action for (self: ReduceAction668, Parser) */
+void parser__ReduceAction668__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -2269,26 +1907,28 @@ val* var5 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var7 /* : Bool */;
+val* var7 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tidnode3 /* var tidnode3: nullable Object */;
+short int var8 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var_tassignnode4 /* var tassignnode4: nullable Object */;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var14 /* : Bool */;
-int cltype15;
-int idtype16;
-val* var17 /* : AAttrAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
-long var18 /* : Int */;
+val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
+val* var_pexprnode6 /* var pexprnode6: nullable Object */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+val* var18 /* : ACallAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
 long var19 /* : Int */;
+long var20 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
@@ -2304,730 +1944,992 @@ var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist2 = var5;
 var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
 var_nodearraylist1 = var6;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var7 = 1;
+var7 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var7->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var7) /* init_aimplicitselfexpr on <var7:AImplicitSelfExpr>*/;
+var_pexprnode2 = var7;
+var_tidnode3 = var_nodearraylist3;
+/* <var_tidnode3:nullable Object> isa nullable TId */
+cltype = type_nullable_parser_nodes__TId.color;
+idtype = type_nullable_parser_nodes__TId.id;
+if(var_tidnode3 == NULL) {
+var8 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var7 = 0;
+if(cltype >= var_tidnode3->type->table_size) {
+var8 = 0;
 } else {
-var7 = var_pexprnode2->type->type_table[cltype] == idtype;
+var8 = var_tidnode3->type->type_table[cltype] == idtype;
 }
 }
-if (!var7) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 24998);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25425);
+show_backtrace(1);
 }
-var_tattridnode3 = var_nodearraylist4;
-/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype9 = type_nullable_parser_nodes__TAttrid.color;
-idtype10 = type_nullable_parser_nodes__TAttrid.id;
-if(var_tattridnode3 == NULL) {
-var8 = 1;
+var_pexprsnode4 = var_nodearraylist4;
+/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
+cltype10 = type_nullable_parser_nodes__AExprs.color;
+idtype11 = type_nullable_parser_nodes__AExprs.id;
+if(var_pexprsnode4 == NULL) {
+var9 = 1;
 } else {
-if(cltype9 >= var_tattridnode3->type->table_size) {
-var8 = 0;
+if(cltype10 >= var_pexprsnode4->type->table_size) {
+var9 = 0;
 } else {
-var8 = var_tattridnode3->type->type_table[cltype9] == idtype10;
+var9 = var_pexprsnode4->type->type_table[cltype10] == idtype11;
 }
 }
-if (!var8) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25000);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25427);
+show_backtrace(1);
 }
-var_tassignnode4 = var_nodearraylist5;
-/* <var_tassignnode4:nullable Object> isa nullable TAssign */
-cltype12 = type_nullable_parser_nodes__TAssign.color;
-idtype13 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode4 == NULL) {
-var11 = 1;
+var_tassignnode5 = var_nodearraylist5;
+/* <var_tassignnode5:nullable Object> isa nullable TAssign */
+cltype13 = type_nullable_parser_nodes__TAssign.color;
+idtype14 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode5 == NULL) {
+var12 = 1;
 } else {
-if(cltype12 >= var_tassignnode4->type->table_size) {
-var11 = 0;
+if(cltype13 >= var_tassignnode5->type->table_size) {
+var12 = 0;
 } else {
-var11 = var_tassignnode4->type->type_table[cltype12] == idtype13;
+var12 = var_tassignnode5->type->type_table[cltype13] == idtype14;
 }
 }
-if (!var11) {
+if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25002);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25429);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist6;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype15 = type_nullable_parser_nodes__AExpr.color;
-idtype16 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var14 = 1;
+var_pexprnode6 = var_nodearraylist6;
+/* <var_pexprnode6:nullable Object> isa nullable AExpr */
+cltype16 = type_nullable_parser_nodes__AExpr.color;
+idtype17 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode6 == NULL) {
+var15 = 1;
 } else {
-if(cltype15 >= var_pexprnode5->type->table_size) {
-var14 = 0;
+if(cltype16 >= var_pexprnode6->type->table_size) {
+var15 = 0;
 } else {
-var14 = var_pexprnode5->type->type_table[cltype15] == idtype16;
+var15 = var_pexprnode6->type->type_table[cltype16] == idtype17;
 }
 }
-if (!var14) {
+if (!var15) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25004);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25431);
+show_backtrace(1);
 }
-var17 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var17, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var17:AAttrAssignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrAssignExpr(var17);
-var_pexprnode1 = var17;
+var18 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var18, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var18:ACallAssignExpr>*/;
+var_pexprnode1 = var18;
 var_node_list = var_pexprnode1;
-var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction650> */
-var19 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var18) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var19, var_node_list) /* push on <var_p:Parser>*/;
+var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction668> */
+var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction650#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction650__action(val* self, val* p0) {
-parser__ReduceAction650__action(self, p0);
+/* method parser#ReduceAction668#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction668__action(val* self, val* p0) {
+parser__ReduceAction668__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction651#action for (self: ReduceAction651, Parser) */
-void parser__ReduceAction651__action(val* self, val* p0) {
+/* method parser#ReduceAction670#action for (self: ReduceAction670, Parser) */
+void parser__ReduceAction670__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
 val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var4 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
 short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tassignnode4 /* var tassignnode4: nullable Object */;
+val* var_pexprsnode3 /* var pexprsnode3: nullable Object */;
 short int var6 /* : Bool */;
 int cltype7;
 int idtype8;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+val* var_tassignnode4 /* var tassignnode4: nullable Object */;
 short int var9 /* : Bool */;
 int cltype10;
 int idtype11;
-val* var12 /* : AAttrAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
-long var13 /* : Int */;
-long var14 /* : Int */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
+val* var15 /* : ABraAssignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ABraAssignExpr */;
+long var16 /* : Int */;
+long var17 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var4 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var4->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var4) /* init_aimplicitselfexpr on <var4:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var4);
-var_pexprnode2 = var4;
-var_tattridnode3 = var_nodearraylist1;
-/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype = type_nullable_parser_nodes__TAttrid.color;
-idtype = type_nullable_parser_nodes__TAttrid.id;
-if(var_tattridnode3 == NULL) {
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
 var5 = 1;
 } else {
-if(cltype >= var_tattridnode3->type->table_size) {
+if(cltype >= var_pexprnode2->type->table_size) {
 var5 = 0;
 } else {
-var5 = var_tattridnode3->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25025);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25453);
+show_backtrace(1);
 }
-var_tassignnode4 = var_nodearraylist2;
-/* <var_tassignnode4:nullable Object> isa nullable TAssign */
-cltype7 = type_nullable_parser_nodes__TAssign.color;
-idtype8 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode4 == NULL) {
+var_pexprsnode3 = var_nodearraylist2;
+/* <var_pexprsnode3:nullable Object> isa nullable AExprs */
+cltype7 = type_nullable_parser_nodes__AExprs.color;
+idtype8 = type_nullable_parser_nodes__AExprs.id;
+if(var_pexprsnode3 == NULL) {
 var6 = 1;
 } else {
-if(cltype7 >= var_tassignnode4->type->table_size) {
+if(cltype7 >= var_pexprsnode3->type->table_size) {
 var6 = 0;
 } else {
-var6 = var_tassignnode4->type->type_table[cltype7] == idtype8;
+var6 = var_pexprsnode3->type->type_table[cltype7] == idtype8;
 }
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25027);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25455);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist3;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype10 = type_nullable_parser_nodes__AExpr.color;
-idtype11 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
+var_tassignnode4 = var_nodearraylist3;
+/* <var_tassignnode4:nullable Object> isa nullable TAssign */
+cltype10 = type_nullable_parser_nodes__TAssign.color;
+idtype11 = type_nullable_parser_nodes__TAssign.id;
+if(var_tassignnode4 == NULL) {
 var9 = 1;
 } else {
-if(cltype10 >= var_pexprnode5->type->table_size) {
+if(cltype10 >= var_tassignnode4->type->table_size) {
 var9 = 0;
 } else {
-var9 = var_pexprnode5->type->type_table[cltype10] == idtype11;
+var9 = var_tassignnode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25029);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25457);
+show_backtrace(1);
 }
-var12 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var12, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var12:AAttrAssignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrAssignExpr(var12);
-var_pexprnode1 = var12;
+var_pexprnode5 = var_nodearraylist4;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype13 = type_nullable_parser_nodes__AExpr.color;
+idtype14 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var12 = 1;
+} else {
+if(cltype13 >= var_pexprnode5->type->table_size) {
+var12 = 0;
+} else {
+var12 = var_pexprnode5->type->type_table[cltype13] == idtype14;
+}
+}
+if (!var12) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25459);
+show_backtrace(1);
+}
+var15 = NEW_parser_nodes__ABraAssignExpr(&type_parser_nodes__ABraAssignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__ABraAssignExpr__init_abraassignexpr]))(var15, var_pexprnode2, var_pexprsnode3, var_tassignnode4, var_pexprnode5) /* init_abraassignexpr on <var15:ABraAssignExpr>*/;
+var_pexprnode1 = var15;
 var_node_list = var_pexprnode1;
-var13 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction651> */
-var14 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var13) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var14, var_node_list) /* push on <var_p:Parser>*/;
+var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction670> */
+var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction651#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction651__action(val* self, val* p0) {
-parser__ReduceAction651__action(self, p0);
+/* method parser#ReduceAction670#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction670__action(val* self, val* p0) {
+parser__ReduceAction670__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction652#action for (self: ReduceAction652, Parser) */
-void parser__ReduceAction652__action(val* self, val* p0) {
+/* method parser#ReduceAction671#action for (self: ReduceAction671, Parser) */
+void parser__ReduceAction671__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var2 /* : nullable Object */;
 val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var3 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var5 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
 val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var8 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
 val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var_tassignnode4 /* var tassignnode4: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var_passignopnode4 /* var passignopnode4: nullable Object */;
+short int var11 /* : Bool */;
+int cltype12;
+int idtype13;
 val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var15 /* : Bool */;
-int cltype16;
-int idtype17;
-val* var18 /* : AAttrAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
+short int var14 /* : Bool */;
+int cltype15;
+int idtype16;
+val* var17 /* : AAttrReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
+long var18 /* : Int */;
 long var19 /* : Int */;
-long var20 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var1;
+var_nodearraylist6 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var2;
+var_nodearraylist5 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var3;
+var_nodearraylist4 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var4;
+var_nodearraylist3 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var5;
+var_nodearraylist2 = var5;
 var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var7;
+var_nodearraylist1 = var6;
 var_pexprnode2 = var_nodearraylist1;
 /* <var_pexprnode2:nullable Object> isa nullable AExpr */
 cltype = type_nullable_parser_nodes__AExpr.color;
 idtype = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode2 == NULL) {
-var8 = 1;
+var7 = 1;
 } else {
 if(cltype >= var_pexprnode2->type->table_size) {
-var8 = 0;
+var7 = 0;
 } else {
-var8 = var_pexprnode2->type->type_table[cltype] == idtype;
+var7 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var8) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25053);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25482);
+show_backtrace(1);
 }
-var_tattridnode3 = var_nodearraylist5;
+var_tattridnode3 = var_nodearraylist4;
 /* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype10 = type_nullable_parser_nodes__TAttrid.color;
-idtype11 = type_nullable_parser_nodes__TAttrid.id;
+cltype9 = type_nullable_parser_nodes__TAttrid.color;
+idtype10 = type_nullable_parser_nodes__TAttrid.id;
 if(var_tattridnode3 == NULL) {
-var9 = 1;
+var8 = 1;
 } else {
-if(cltype10 >= var_tattridnode3->type->table_size) {
-var9 = 0;
+if(cltype9 >= var_tattridnode3->type->table_size) {
+var8 = 0;
 } else {
-var9 = var_tattridnode3->type->type_table[cltype10] == idtype11;
+var8 = var_tattridnode3->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var9) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25055);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25484);
+show_backtrace(1);
 }
-var_tassignnode4 = var_nodearraylist6;
-/* <var_tassignnode4:nullable Object> isa nullable TAssign */
-cltype13 = type_nullable_parser_nodes__TAssign.color;
-idtype14 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode4 == NULL) {
-var12 = 1;
+var_passignopnode4 = var_nodearraylist5;
+/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
+cltype12 = type_nullable_parser_nodes__AAssignOp.color;
+idtype13 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode4 == NULL) {
+var11 = 1;
 } else {
-if(cltype13 >= var_tassignnode4->type->table_size) {
-var12 = 0;
+if(cltype12 >= var_passignopnode4->type->table_size) {
+var11 = 0;
 } else {
-var12 = var_tassignnode4->type->type_table[cltype13] == idtype14;
+var11 = var_passignopnode4->type->type_table[cltype12] == idtype13;
 }
 }
-if (!var12) {
+if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25057);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25486);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist7;
+var_pexprnode5 = var_nodearraylist6;
 /* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype16 = type_nullable_parser_nodes__AExpr.color;
-idtype17 = type_nullable_parser_nodes__AExpr.id;
+cltype15 = type_nullable_parser_nodes__AExpr.color;
+idtype16 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode5 == NULL) {
-var15 = 1;
+var14 = 1;
 } else {
-if(cltype16 >= var_pexprnode5->type->table_size) {
-var15 = 0;
+if(cltype15 >= var_pexprnode5->type->table_size) {
+var14 = 0;
 } else {
-var15 = var_pexprnode5->type->type_table[cltype16] == idtype17;
+var14 = var_pexprnode5->type->type_table[cltype15] == idtype16;
 }
 }
-if (!var15) {
+if (!var14) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25059);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25488);
+show_backtrace(1);
 }
-var18 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var18, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var18:AAttrAssignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrAssignExpr(var18);
-var_pexprnode1 = var18;
+var17 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var17, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var17:AAttrReassignExpr>*/;
+var_pexprnode1 = var17;
 var_node_list = var_pexprnode1;
-var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction652> */
-var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
+var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction671> */
+var19 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var18) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var19, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction652#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction652__action(val* self, val* p0) {
-parser__ReduceAction652__action(self, p0);
+/* method parser#ReduceAction671#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction671__action(val* self, val* p0) {
+parser__ReduceAction671__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction653#action for (self: ReduceAction653, Parser) */
-void parser__ReduceAction653__action(val* self, val* p0) {
+/* method parser#ReduceAction672#action for (self: ReduceAction672, Parser) */
+void parser__ReduceAction672__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var6 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var8 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var9 /* : Bool */;
+val* var4 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var_tassignnode4 /* var tassignnode4: nullable Object */;
-short int var13 /* : Bool */;
-int cltype14;
-int idtype15;
+val* var_passignopnode4 /* var passignopnode4: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
 val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : AAttrAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
-long var20 /* : Int */;
-long var21 /* : Int */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var12 /* : AAttrReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
+long var13 /* : Int */;
+long var14 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var1;
+var_nodearraylist3 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var2;
+var_nodearraylist2 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var8;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var9 = 1;
-} else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_pexprnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25084);
-exit(1);
-}
-var_tattridnode3 = var_nodearraylist6;
+var_nodearraylist1 = var3;
+var4 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var4->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var4) /* init_aimplicitselfexpr on <var4:AImplicitSelfExpr>*/;
+var_pexprnode2 = var4;
+var_tattridnode3 = var_nodearraylist1;
 /* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype11 = type_nullable_parser_nodes__TAttrid.color;
-idtype12 = type_nullable_parser_nodes__TAttrid.id;
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
 if(var_tattridnode3 == NULL) {
-var10 = 1;
+var5 = 1;
 } else {
-if(cltype11 >= var_tattridnode3->type->table_size) {
-var10 = 0;
+if(cltype >= var_tattridnode3->type->table_size) {
+var5 = 0;
 } else {
-var10 = var_tattridnode3->type->type_table[cltype11] == idtype12;
+var5 = var_tattridnode3->type->type_table[cltype] == idtype;
 }
 }
-if (!var10) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25086);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25509);
+show_backtrace(1);
 }
-var_tassignnode4 = var_nodearraylist7;
-/* <var_tassignnode4:nullable Object> isa nullable TAssign */
-cltype14 = type_nullable_parser_nodes__TAssign.color;
-idtype15 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode4 == NULL) {
-var13 = 1;
+var_passignopnode4 = var_nodearraylist2;
+/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
+cltype7 = type_nullable_parser_nodes__AAssignOp.color;
+idtype8 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode4 == NULL) {
+var6 = 1;
 } else {
-if(cltype14 >= var_tassignnode4->type->table_size) {
-var13 = 0;
+if(cltype7 >= var_passignopnode4->type->table_size) {
+var6 = 0;
 } else {
-var13 = var_tassignnode4->type->type_table[cltype14] == idtype15;
+var6 = var_passignopnode4->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var13) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25088);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25511);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist8;
+var_pexprnode5 = var_nodearraylist3;
 /* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype17 = type_nullable_parser_nodes__AExpr.color;
-idtype18 = type_nullable_parser_nodes__AExpr.id;
+cltype10 = type_nullable_parser_nodes__AExpr.color;
+idtype11 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode5 == NULL) {
-var16 = 1;
+var9 = 1;
 } else {
-if(cltype17 >= var_pexprnode5->type->table_size) {
-var16 = 0;
+if(cltype10 >= var_pexprnode5->type->table_size) {
+var9 = 0;
 } else {
-var16 = var_pexprnode5->type->type_table[cltype17] == idtype18;
+var9 = var_pexprnode5->type->type_table[cltype10] == idtype11;
 }
 }
-if (!var16) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25090);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25513);
+show_backtrace(1);
 }
-var19 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var19->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var19, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var19:AAttrAssignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrAssignExpr(var19);
-var_pexprnode1 = var19;
+var12 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var12, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var12:AAttrReassignExpr>*/;
+var_pexprnode1 = var12;
 var_node_list = var_pexprnode1;
-var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction653> */
-var21 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var20) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var21, var_node_list) /* push on <var_p:Parser>*/;
+var13 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction672> */
+var14 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var13) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var14, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction653#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction653__action(val* self, val* p0) {
-parser__ReduceAction653__action(self, p0);
+/* method parser#ReduceAction672#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction672__action(val* self, val* p0) {
+parser__ReduceAction672__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction655#action for (self: ReduceAction655, Parser) */
-void parser__ReduceAction655__action(val* self, val* p0) {
+/* method parser#ReduceAction673#action for (self: ReduceAction673, Parser) */
+void parser__ReduceAction673__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var4 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var7 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var5 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var6 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var8 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tassignnode4 /* var tassignnode4: nullable Object */;
-short int var7 /* : Bool */;
-int cltype8;
-int idtype9;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var_passignopnode4 /* var passignopnode4: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
 val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var13 /* : AAttrAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
-long var14 /* : Int */;
-long var15 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+val* var18 /* : AAttrReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
+long var19 /* : Int */;
+long var20 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist7 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist6 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
+var_nodearraylist5 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var5);
-var_pexprnode2 = var5;
-var_tattridnode3 = var_nodearraylist2;
+var_nodearraylist4 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var7;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var8 = 1;
+} else {
+if(cltype >= var_pexprnode2->type->table_size) {
+var8 = 0;
+} else {
+var8 = var_pexprnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var8) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25537);
+show_backtrace(1);
+}
+var_tattridnode3 = var_nodearraylist5;
 /* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype = type_nullable_parser_nodes__TAttrid.color;
-idtype = type_nullable_parser_nodes__TAttrid.id;
+cltype10 = type_nullable_parser_nodes__TAttrid.color;
+idtype11 = type_nullable_parser_nodes__TAttrid.id;
 if(var_tattridnode3 == NULL) {
-var6 = 1;
+var9 = 1;
 } else {
-if(cltype >= var_tattridnode3->type->table_size) {
-var6 = 0;
+if(cltype10 >= var_tattridnode3->type->table_size) {
+var9 = 0;
 } else {
-var6 = var_tattridnode3->type->type_table[cltype] == idtype;
+var9 = var_tattridnode3->type->type_table[cltype10] == idtype11;
 }
 }
-if (!var6) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25112);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25539);
+show_backtrace(1);
 }
-var_tassignnode4 = var_nodearraylist3;
-/* <var_tassignnode4:nullable Object> isa nullable TAssign */
-cltype8 = type_nullable_parser_nodes__TAssign.color;
-idtype9 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode4 == NULL) {
-var7 = 1;
+var_passignopnode4 = var_nodearraylist6;
+/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
+cltype13 = type_nullable_parser_nodes__AAssignOp.color;
+idtype14 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode4 == NULL) {
+var12 = 1;
 } else {
-if(cltype8 >= var_tassignnode4->type->table_size) {
-var7 = 0;
+if(cltype13 >= var_passignopnode4->type->table_size) {
+var12 = 0;
 } else {
-var7 = var_tassignnode4->type->type_table[cltype8] == idtype9;
+var12 = var_passignopnode4->type->type_table[cltype13] == idtype14;
 }
 }
-if (!var7) {
+if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25114);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25541);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist4;
+var_pexprnode5 = var_nodearraylist7;
 /* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype11 = type_nullable_parser_nodes__AExpr.color;
-idtype12 = type_nullable_parser_nodes__AExpr.id;
+cltype16 = type_nullable_parser_nodes__AExpr.color;
+idtype17 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode5 == NULL) {
-var10 = 1;
+var15 = 1;
 } else {
-if(cltype11 >= var_pexprnode5->type->table_size) {
-var10 = 0;
+if(cltype16 >= var_pexprnode5->type->table_size) {
+var15 = 0;
 } else {
-var10 = var_pexprnode5->type->type_table[cltype11] == idtype12;
+var15 = var_pexprnode5->type->type_table[cltype16] == idtype17;
 }
 }
-if (!var10) {
+if (!var15) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25116);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25543);
+show_backtrace(1);
 }
-var13 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var13, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var13:AAttrAssignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrAssignExpr(var13);
-var_pexprnode1 = var13;
+var18 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var18, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var18:AAttrReassignExpr>*/;
+var_pexprnode1 = var18;
 var_node_list = var_pexprnode1;
-var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction655> */
-var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
+var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction673> */
+var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction655#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction655__action(val* self, val* p0) {
-parser__ReduceAction655__action(self, p0);
+/* method parser#ReduceAction673#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction673__action(val* self, val* p0) {
+parser__ReduceAction673__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction656#action for (self: ReduceAction656, Parser) */
-void parser__ReduceAction656__action(val* self, val* p0) {
+/* method parser#ReduceAction674#action for (self: ReduceAction674, Parser) */
+void parser__ReduceAction674__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var4 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var5 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var8 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var6 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var7 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var9 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tassignnode4 /* var tassignnode4: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var10 /* : Bool */;
+int cltype11;
+int idtype12;
+val* var_passignopnode4 /* var passignopnode4: nullable Object */;
+short int var13 /* : Bool */;
+int cltype14;
+int idtype15;
 val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
-val* var14 /* : AAttrAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrAssignExpr */;
-long var15 /* : Int */;
-long var16 /* : Int */;
+short int var16 /* : Bool */;
+int cltype17;
+int idtype18;
+val* var19 /* : AAttrReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
+long var20 /* : Int */;
+long var21 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var1;
+var_nodearraylist8 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var2;
+var_nodearraylist7 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var3;
+var_nodearraylist6 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var4;
+var_nodearraylist5 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var5;
-var6 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var6->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var6) /* init_aimplicitselfexpr on <var6:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var6);
-var_pexprnode2 = var6;
-var_tattridnode3 = var_nodearraylist3;
+var_nodearraylist4 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var8;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var9 = 1;
+} else {
+if(cltype >= var_pexprnode2->type->table_size) {
+var9 = 0;
+} else {
+var9 = var_pexprnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var9) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25568);
+show_backtrace(1);
+}
+var_tattridnode3 = var_nodearraylist6;
 /* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype = type_nullable_parser_nodes__TAttrid.color;
-idtype = type_nullable_parser_nodes__TAttrid.id;
+cltype11 = type_nullable_parser_nodes__TAttrid.color;
+idtype12 = type_nullable_parser_nodes__TAttrid.id;
 if(var_tattridnode3 == NULL) {
-var7 = 1;
+var10 = 1;
 } else {
-if(cltype >= var_tattridnode3->type->table_size) {
-var7 = 0;
+if(cltype11 >= var_tattridnode3->type->table_size) {
+var10 = 0;
 } else {
-var7 = var_tattridnode3->type->type_table[cltype] == idtype;
+var10 = var_tattridnode3->type->type_table[cltype11] == idtype12;
 }
 }
-if (!var7) {
+if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25139);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25570);
+show_backtrace(1);
 }
-var_tassignnode4 = var_nodearraylist4;
-/* <var_tassignnode4:nullable Object> isa nullable TAssign */
-cltype9 = type_nullable_parser_nodes__TAssign.color;
-idtype10 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode4 == NULL) {
-var8 = 1;
+var_passignopnode4 = var_nodearraylist7;
+/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
+cltype14 = type_nullable_parser_nodes__AAssignOp.color;
+idtype15 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode4 == NULL) {
+var13 = 1;
 } else {
-if(cltype9 >= var_tassignnode4->type->table_size) {
-var8 = 0;
+if(cltype14 >= var_passignopnode4->type->table_size) {
+var13 = 0;
 } else {
-var8 = var_tassignnode4->type->type_table[cltype9] == idtype10;
+var13 = var_passignopnode4->type->type_table[cltype14] == idtype15;
 }
 }
-if (!var8) {
+if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25141);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25572);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist5;
+var_pexprnode5 = var_nodearraylist8;
 /* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype12 = type_nullable_parser_nodes__AExpr.color;
-idtype13 = type_nullable_parser_nodes__AExpr.id;
+cltype17 = type_nullable_parser_nodes__AExpr.color;
+idtype18 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode5 == NULL) {
-var11 = 1;
+var16 = 1;
 } else {
-if(cltype12 >= var_pexprnode5->type->table_size) {
-var11 = 0;
+if(cltype17 >= var_pexprnode5->type->table_size) {
+var16 = 0;
 } else {
-var11 = var_pexprnode5->type->type_table[cltype12] == idtype13;
+var16 = var_pexprnode5->type->type_table[cltype17] == idtype18;
 }
 }
-if (!var11) {
+if (!var16) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25143);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25574);
+show_backtrace(1);
 }
-var14 = NEW_parser_nodes__AAttrAssignExpr(&type_parser_nodes__AAttrAssignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AAttrAssignExpr__init_aattrassignexpr]))(var14, var_pexprnode2, var_tattridnode3, var_tassignnode4, var_pexprnode5) /* init_aattrassignexpr on <var14:AAttrAssignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrAssignExpr(var14);
-var_pexprnode1 = var14;
+var19 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var19->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var19, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var19:AAttrReassignExpr>*/;
+var_pexprnode1 = var19;
 var_node_list = var_pexprnode1;
-var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction656> */
-var16 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var15) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var16, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
+var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction674> */
+var21 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var20) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var21, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
 }
-/* method parser#ReduceAction656#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction656__action(val* self, val* p0) {
-parser__ReduceAction656__action(self, p0);
+/* method parser#ReduceAction674#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction674__action(val* self, val* p0) {
+parser__ReduceAction674__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction676#action for (self: ReduceAction676, Parser) */
+void parser__ReduceAction676__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var5 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype;
+int idtype;
+val* var_passignopnode4 /* var passignopnode4: nullable Object */;
+short int var7 /* : Bool */;
+int cltype8;
+int idtype9;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var10 /* : Bool */;
+int cltype11;
+int idtype12;
+val* var13 /* : AAttrReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
+long var14 /* : Int */;
+long var15 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
+var_pexprnode2 = var5;
+var_tattridnode3 = var_nodearraylist2;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var6 = 1;
+} else {
+if(cltype >= var_tattridnode3->type->table_size) {
+var6 = 0;
+} else {
+var6 = var_tattridnode3->type->type_table[cltype] == idtype;
+}
+}
+if (!var6) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25596);
+show_backtrace(1);
+}
+var_passignopnode4 = var_nodearraylist3;
+/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
+cltype8 = type_nullable_parser_nodes__AAssignOp.color;
+idtype9 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode4 == NULL) {
+var7 = 1;
+} else {
+if(cltype8 >= var_passignopnode4->type->table_size) {
+var7 = 0;
+} else {
+var7 = var_passignopnode4->type->type_table[cltype8] == idtype9;
+}
+}
+if (!var7) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25598);
+show_backtrace(1);
+}
+var_pexprnode5 = var_nodearraylist4;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype11 = type_nullable_parser_nodes__AExpr.color;
+idtype12 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var10 = 1;
+} else {
+if(cltype11 >= var_pexprnode5->type->table_size) {
+var10 = 0;
+} else {
+var10 = var_pexprnode5->type->type_table[cltype11] == idtype12;
+}
+}
+if (!var10) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25600);
+show_backtrace(1);
+}
+var13 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var13, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var13:AAttrReassignExpr>*/;
+var_pexprnode1 = var13;
+var_node_list = var_pexprnode1;
+var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction676> */
+var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction676#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction676__action(val* self, val* p0) {
+parser__ReduceAction676__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction677#action for (self: ReduceAction677, Parser) */
+void parser__ReduceAction677__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var6 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var7 /* : Bool */;
+int cltype;
+int idtype;
+val* var_passignopnode4 /* var passignopnode4: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var11 /* : Bool */;
+int cltype12;
+int idtype13;
+val* var14 /* : AAttrReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
+long var15 /* : Int */;
+long var16 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var5;
+var6 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var6->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var6) /* init_aimplicitselfexpr on <var6:AImplicitSelfExpr>*/;
+var_pexprnode2 = var6;
+var_tattridnode3 = var_nodearraylist3;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var7 = 1;
+} else {
+if(cltype >= var_tattridnode3->type->table_size) {
+var7 = 0;
+} else {
+var7 = var_tattridnode3->type->type_table[cltype] == idtype;
+}
+}
+if (!var7) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25623);
+show_backtrace(1);
+}
+var_passignopnode4 = var_nodearraylist4;
+/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
+cltype9 = type_nullable_parser_nodes__AAssignOp.color;
+idtype10 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode4 == NULL) {
+var8 = 1;
+} else {
+if(cltype9 >= var_passignopnode4->type->table_size) {
+var8 = 0;
+} else {
+var8 = var_passignopnode4->type->type_table[cltype9] == idtype10;
+}
+}
+if (!var8) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25625);
+show_backtrace(1);
+}
+var_pexprnode5 = var_nodearraylist5;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype12 = type_nullable_parser_nodes__AExpr.color;
+idtype13 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var11 = 1;
+} else {
+if(cltype12 >= var_pexprnode5->type->table_size) {
+var11 = 0;
+} else {
+var11 = var_pexprnode5->type->type_table[cltype12] == idtype13;
+}
+}
+if (!var11) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25627);
+show_backtrace(1);
+}
+var14 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var14, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var14:AAttrReassignExpr>*/;
+var_pexprnode1 = var14;
+var_node_list = var_pexprnode1;
+var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction677> */
+var16 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var15) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var16, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction677#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction677__action(val* self, val* p0) {
+parser__ReduceAction677__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction658#action for (self: ReduceAction658, Parser) */
-void parser__ReduceAction658__action(val* self, val* p0) {
+/* method parser#ReduceAction679#action for (self: ReduceAction679, Parser) */
+void parser__ReduceAction679__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -3057,7 +2959,7 @@ val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
 short int var12 /* : Bool */;
 int cltype13;
 int idtype14;
-val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+val* var_passignopnode5 /* var passignopnode5: nullable Object */;
 short int var15 /* : Bool */;
 int cltype16;
 int idtype17;
@@ -3065,8 +2967,8 @@ val* var_pexprnode6 /* var pexprnode6: nullable Object */;
 short int var18 /* : Bool */;
 int cltype19;
 int idtype20;
-val* var21 /* : ACallAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+val* var21 /* : ACallReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
 long var22 /* : Int */;
 long var23 /* : Int */;
 var_p = p0;
@@ -3101,8 +3003,8 @@ var8 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25167);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25651);
+show_backtrace(1);
 }
 var_tidnode3 = var_nodearraylist4;
 /* <var_tidnode3:nullable Object> isa nullable TId */
@@ -3119,8 +3021,8 @@ var9 = var_tidnode3->type->type_table[cltype10] == idtype11;
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25169);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25653);
+show_backtrace(1);
 }
 var_pexprsnode4 = var_nodearraylist5;
 /* <var_pexprsnode4:nullable Object> isa nullable AExprs */
@@ -3137,26 +3039,26 @@ var12 = var_pexprsnode4->type->type_table[cltype13] == idtype14;
 }
 if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25171);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25655);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist6;
-/* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype16 = type_nullable_parser_nodes__TAssign.color;
-idtype17 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode5 == NULL) {
+var_passignopnode5 = var_nodearraylist6;
+/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
+cltype16 = type_nullable_parser_nodes__AAssignOp.color;
+idtype17 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode5 == NULL) {
 var15 = 1;
 } else {
-if(cltype16 >= var_tassignnode5->type->table_size) {
+if(cltype16 >= var_passignopnode5->type->table_size) {
 var15 = 0;
 } else {
-var15 = var_tassignnode5->type->type_table[cltype16] == idtype17;
+var15 = var_passignopnode5->type->type_table[cltype16] == idtype17;
 }
 }
 if (!var15) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25173);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25657);
+show_backtrace(1);
 }
 var_pexprnode6 = var_nodearraylist7;
 /* <var_pexprnode6:nullable Object> isa nullable AExpr */
@@ -3173,26 +3075,25 @@ var18 = var_pexprnode6->type->type_table[cltype19] == idtype20;
 }
 if (!var18) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25175);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25659);
+show_backtrace(1);
 }
-var21 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var21, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var21:ACallAssignExpr>*/;
-CHECK_NEW_parser_nodes__ACallAssignExpr(var21);
+var21 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var21, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var21:ACallReassignExpr>*/;
 var_pexprnode1 = var21;
 var_node_list = var_pexprnode1;
-var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction658> */
+var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction679> */
 var23 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var22) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var23, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction658#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction658__action(val* self, val* p0) {
-parser__ReduceAction658__action(self, p0);
+/* method parser#ReduceAction679#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction679__action(val* self, val* p0) {
+parser__ReduceAction679__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction659#action for (self: ReduceAction659, Parser) */
-void parser__ReduceAction659__action(val* self, val* p0) {
+/* method parser#ReduceAction680#action for (self: ReduceAction680, Parser) */
+void parser__ReduceAction680__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -3214,7 +3115,7 @@ val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
 short int var7 /* : Bool */;
 int cltype8;
 int idtype9;
-val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+val* var_passignopnode5 /* var passignopnode5: nullable Object */;
 short int var10 /* : Bool */;
 int cltype11;
 int idtype12;
@@ -3222,8 +3123,8 @@ val* var_pexprnode6 /* var pexprnode6: nullable Object */;
 short int var13 /* : Bool */;
 int cltype14;
 int idtype15;
-val* var16 /* : ACallAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+val* var16 /* : ACallReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
 long var17 /* : Int */;
 long var18 /* : Int */;
 var_p = p0;
@@ -3239,7 +3140,6 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var4;
 var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
 ((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var5);
 var_pexprnode2 = var5;
 var_tidnode3 = var_nodearraylist1;
 /* <var_tidnode3:nullable Object> isa nullable TId */
@@ -3256,8 +3156,8 @@ var6 = var_tidnode3->type->type_table[cltype] == idtype;
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25198);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25682);
+show_backtrace(1);
 }
 var_pexprsnode4 = var_nodearraylist2;
 /* <var_pexprsnode4:nullable Object> isa nullable AExprs */
@@ -3274,26 +3174,26 @@ var7 = var_pexprsnode4->type->type_table[cltype8] == idtype9;
 }
 if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25200);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25684);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist3;
-/* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype11 = type_nullable_parser_nodes__TAssign.color;
-idtype12 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode5 == NULL) {
+var_passignopnode5 = var_nodearraylist3;
+/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
+cltype11 = type_nullable_parser_nodes__AAssignOp.color;
+idtype12 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode5 == NULL) {
 var10 = 1;
 } else {
-if(cltype11 >= var_tassignnode5->type->table_size) {
+if(cltype11 >= var_passignopnode5->type->table_size) {
 var10 = 0;
 } else {
-var10 = var_tassignnode5->type->type_table[cltype11] == idtype12;
+var10 = var_passignopnode5->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25202);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25686);
+show_backtrace(1);
 }
 var_pexprnode6 = var_nodearraylist4;
 /* <var_pexprnode6:nullable Object> isa nullable AExpr */
@@ -3310,26 +3210,25 @@ var13 = var_pexprnode6->type->type_table[cltype14] == idtype15;
 }
 if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25204);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25688);
+show_backtrace(1);
 }
-var16 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var16, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var16:ACallAssignExpr>*/;
-CHECK_NEW_parser_nodes__ACallAssignExpr(var16);
+var16 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var16, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var16:ACallReassignExpr>*/;
 var_pexprnode1 = var16;
 var_node_list = var_pexprnode1;
-var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction659> */
+var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction680> */
 var18 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var17) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var18, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction659#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction659__action(val* self, val* p0) {
-parser__ReduceAction659__action(self, p0);
+/* method parser#ReduceAction680#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction680__action(val* self, val* p0) {
+parser__ReduceAction680__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction660#action for (self: ReduceAction660, Parser) */
-void parser__ReduceAction660__action(val* self, val* p0) {
+/* method parser#ReduceAction681#action for (self: ReduceAction681, Parser) */
+void parser__ReduceAction681__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -3361,7 +3260,7 @@ val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
 short int var13 /* : Bool */;
 int cltype14;
 int idtype15;
-val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+val* var_passignopnode5 /* var passignopnode5: nullable Object */;
 short int var16 /* : Bool */;
 int cltype17;
 int idtype18;
@@ -3369,8 +3268,8 @@ val* var_pexprnode6 /* var pexprnode6: nullable Object */;
 short int var19 /* : Bool */;
 int cltype20;
 int idtype21;
-val* var22 /* : ACallAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+val* var22 /* : ACallReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
 long var23 /* : Int */;
 long var24 /* : Int */;
 var_p = p0;
@@ -3407,8 +3306,8 @@ var9 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25230);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25714);
+show_backtrace(1);
 }
 var_tidnode3 = var_nodearraylist5;
 /* <var_tidnode3:nullable Object> isa nullable TId */
@@ -3425,8 +3324,8 @@ var10 = var_tidnode3->type->type_table[cltype11] == idtype12;
 }
 if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25232);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25716);
+show_backtrace(1);
 }
 var_pexprsnode4 = var_nodearraylist6;
 /* <var_pexprsnode4:nullable Object> isa nullable AExprs */
@@ -3443,26 +3342,26 @@ var13 = var_pexprsnode4->type->type_table[cltype14] == idtype15;
 }
 if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25234);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25718);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist7;
-/* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype17 = type_nullable_parser_nodes__TAssign.color;
-idtype18 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode5 == NULL) {
+var_passignopnode5 = var_nodearraylist7;
+/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
+cltype17 = type_nullable_parser_nodes__AAssignOp.color;
+idtype18 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode5 == NULL) {
 var16 = 1;
 } else {
-if(cltype17 >= var_tassignnode5->type->table_size) {
+if(cltype17 >= var_passignopnode5->type->table_size) {
 var16 = 0;
 } else {
-var16 = var_tassignnode5->type->type_table[cltype17] == idtype18;
+var16 = var_passignopnode5->type->type_table[cltype17] == idtype18;
 }
 }
 if (!var16) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25236);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25720);
+show_backtrace(1);
 }
 var_pexprnode6 = var_nodearraylist8;
 /* <var_pexprnode6:nullable Object> isa nullable AExpr */
@@ -3479,26 +3378,25 @@ var19 = var_pexprnode6->type->type_table[cltype20] == idtype21;
 }
 if (!var19) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25238);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25722);
+show_backtrace(1);
 }
-var22 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var22, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var22:ACallAssignExpr>*/;
-CHECK_NEW_parser_nodes__ACallAssignExpr(var22);
+var22 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var22, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var22:ACallReassignExpr>*/;
 var_pexprnode1 = var22;
 var_node_list = var_pexprnode1;
-var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction660> */
+var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction681> */
 var24 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var23) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var24, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction660#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction660__action(val* self, val* p0) {
-parser__ReduceAction660__action(self, p0);
+/* method parser#ReduceAction681#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction681__action(val* self, val* p0) {
+parser__ReduceAction681__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction661#action for (self: ReduceAction661, Parser) */
-void parser__ReduceAction661__action(val* self, val* p0) {
+/* method parser#ReduceAction682#action for (self: ReduceAction682, Parser) */
+void parser__ReduceAction682__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -3532,7 +3430,7 @@ val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
 short int var14 /* : Bool */;
 int cltype15;
 int idtype16;
-val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+val* var_passignopnode5 /* var passignopnode5: nullable Object */;
 short int var17 /* : Bool */;
 int cltype18;
 int idtype19;
@@ -3540,8 +3438,8 @@ val* var_pexprnode6 /* var pexprnode6: nullable Object */;
 short int var20 /* : Bool */;
 int cltype21;
 int idtype22;
-val* var23 /* : ACallAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+val* var23 /* : ACallReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
 long var24 /* : Int */;
 long var25 /* : Int */;
 var_p = p0;
@@ -3580,8 +3478,8 @@ var10 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25265);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25749);
+show_backtrace(1);
 }
 var_tidnode3 = var_nodearraylist6;
 /* <var_tidnode3:nullable Object> isa nullable TId */
@@ -3598,8 +3496,8 @@ var11 = var_tidnode3->type->type_table[cltype12] == idtype13;
 }
 if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25267);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25751);
+show_backtrace(1);
 }
 var_pexprsnode4 = var_nodearraylist7;
 /* <var_pexprsnode4:nullable Object> isa nullable AExprs */
@@ -3616,26 +3514,26 @@ var14 = var_pexprsnode4->type->type_table[cltype15] == idtype16;
 }
 if (!var14) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25269);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25753);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist8;
-/* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype18 = type_nullable_parser_nodes__TAssign.color;
-idtype19 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode5 == NULL) {
+var_passignopnode5 = var_nodearraylist8;
+/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
+cltype18 = type_nullable_parser_nodes__AAssignOp.color;
+idtype19 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode5 == NULL) {
 var17 = 1;
 } else {
-if(cltype18 >= var_tassignnode5->type->table_size) {
+if(cltype18 >= var_passignopnode5->type->table_size) {
 var17 = 0;
 } else {
-var17 = var_tassignnode5->type->type_table[cltype18] == idtype19;
+var17 = var_passignopnode5->type->type_table[cltype18] == idtype19;
 }
 }
 if (!var17) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25271);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25755);
+show_backtrace(1);
 }
 var_pexprnode6 = var_nodearraylist9;
 /* <var_pexprnode6:nullable Object> isa nullable AExpr */
@@ -3652,26 +3550,25 @@ var20 = var_pexprnode6->type->type_table[cltype21] == idtype22;
 }
 if (!var20) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25273);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25757);
+show_backtrace(1);
 }
-var23 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var23->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var23, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var23:ACallAssignExpr>*/;
-CHECK_NEW_parser_nodes__ACallAssignExpr(var23);
+var23 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var23->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var23, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var23:ACallReassignExpr>*/;
 var_pexprnode1 = var23;
 var_node_list = var_pexprnode1;
-var24 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction661> */
+var24 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction682> */
 var25 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var24) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var25, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction661#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction661__action(val* self, val* p0) {
-parser__ReduceAction661__action(self, p0);
+/* method parser#ReduceAction682#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction682__action(val* self, val* p0) {
+parser__ReduceAction682__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction663#action for (self: ReduceAction663, Parser) */
-void parser__ReduceAction663__action(val* self, val* p0) {
+/* method parser#ReduceAction684#action for (self: ReduceAction684, Parser) */
+void parser__ReduceAction684__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -3695,7 +3592,7 @@ val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
 short int var8 /* : Bool */;
 int cltype9;
 int idtype10;
-val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+val* var_passignopnode5 /* var passignopnode5: nullable Object */;
 short int var11 /* : Bool */;
 int cltype12;
 int idtype13;
@@ -3703,8 +3600,8 @@ val* var_pexprnode6 /* var pexprnode6: nullable Object */;
 short int var14 /* : Bool */;
 int cltype15;
 int idtype16;
-val* var17 /* : ACallAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+val* var17 /* : ACallReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
 long var18 /* : Int */;
 long var19 /* : Int */;
 var_p = p0;
@@ -3722,7 +3619,6 @@ var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var5;
 var6 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
 ((void (*)(val*))(var6->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var6) /* init_aimplicitselfexpr on <var6:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var6);
 var_pexprnode2 = var6;
 var_tidnode3 = var_nodearraylist2;
 /* <var_tidnode3:nullable Object> isa nullable TId */
@@ -3739,8 +3635,8 @@ var7 = var_tidnode3->type->type_table[cltype] == idtype;
 }
 if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25297);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25781);
+show_backtrace(1);
 }
 var_pexprsnode4 = var_nodearraylist3;
 /* <var_pexprsnode4:nullable Object> isa nullable AExprs */
@@ -3757,26 +3653,26 @@ var8 = var_pexprsnode4->type->type_table[cltype9] == idtype10;
 }
 if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25299);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25783);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist4;
-/* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype12 = type_nullable_parser_nodes__TAssign.color;
-idtype13 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode5 == NULL) {
+var_passignopnode5 = var_nodearraylist4;
+/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
+cltype12 = type_nullable_parser_nodes__AAssignOp.color;
+idtype13 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode5 == NULL) {
 var11 = 1;
 } else {
-if(cltype12 >= var_tassignnode5->type->table_size) {
+if(cltype12 >= var_passignopnode5->type->table_size) {
 var11 = 0;
 } else {
-var11 = var_tassignnode5->type->type_table[cltype12] == idtype13;
+var11 = var_passignopnode5->type->type_table[cltype12] == idtype13;
 }
 }
 if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25301);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25785);
+show_backtrace(1);
 }
 var_pexprnode6 = var_nodearraylist5;
 /* <var_pexprnode6:nullable Object> isa nullable AExpr */
@@ -3793,26 +3689,25 @@ var14 = var_pexprnode6->type->type_table[cltype15] == idtype16;
 }
 if (!var14) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25303);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25787);
+show_backtrace(1);
 }
-var17 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var17, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var17:ACallAssignExpr>*/;
-CHECK_NEW_parser_nodes__ACallAssignExpr(var17);
+var17 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var17, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var17:ACallReassignExpr>*/;
 var_pexprnode1 = var17;
 var_node_list = var_pexprnode1;
-var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction663> */
+var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction684> */
 var19 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var18) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var19, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction663#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction663__action(val* self, val* p0) {
-parser__ReduceAction663__action(self, p0);
+/* method parser#ReduceAction684#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction684__action(val* self, val* p0) {
+parser__ReduceAction684__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction664#action for (self: ReduceAction664, Parser) */
-void parser__ReduceAction664__action(val* self, val* p0) {
+/* method parser#ReduceAction685#action for (self: ReduceAction685, Parser) */
+void parser__ReduceAction685__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -3838,7 +3733,7 @@ val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
 short int var9 /* : Bool */;
 int cltype10;
 int idtype11;
-val* var_tassignnode5 /* var tassignnode5: nullable Object */;
+val* var_passignopnode5 /* var passignopnode5: nullable Object */;
 short int var12 /* : Bool */;
 int cltype13;
 int idtype14;
@@ -3846,8 +3741,8 @@ val* var_pexprnode6 /* var pexprnode6: nullable Object */;
 short int var15 /* : Bool */;
 int cltype16;
 int idtype17;
-val* var18 /* : ACallAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallAssignExpr */;
+val* var18 /* : ACallReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
 long var19 /* : Int */;
 long var20 /* : Int */;
 var_p = p0;
@@ -3867,7 +3762,6 @@ var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist1 = var6;
 var7 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
 ((void (*)(val*))(var7->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var7) /* init_aimplicitselfexpr on <var7:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var7);
 var_pexprnode2 = var7;
 var_tidnode3 = var_nodearraylist3;
 /* <var_tidnode3:nullable Object> isa nullable TId */
@@ -3884,8 +3778,8 @@ var8 = var_tidnode3->type->type_table[cltype] == idtype;
 }
 if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25328);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25812);
+show_backtrace(1);
 }
 var_pexprsnode4 = var_nodearraylist4;
 /* <var_pexprsnode4:nullable Object> isa nullable AExprs */
@@ -3902,26 +3796,26 @@ var9 = var_pexprsnode4->type->type_table[cltype10] == idtype11;
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25330);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25814);
+show_backtrace(1);
 }
-var_tassignnode5 = var_nodearraylist5;
-/* <var_tassignnode5:nullable Object> isa nullable TAssign */
-cltype13 = type_nullable_parser_nodes__TAssign.color;
-idtype14 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode5 == NULL) {
+var_passignopnode5 = var_nodearraylist5;
+/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
+cltype13 = type_nullable_parser_nodes__AAssignOp.color;
+idtype14 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode5 == NULL) {
 var12 = 1;
 } else {
-if(cltype13 >= var_tassignnode5->type->table_size) {
+if(cltype13 >= var_passignopnode5->type->table_size) {
 var12 = 0;
 } else {
-var12 = var_tassignnode5->type->type_table[cltype13] == idtype14;
+var12 = var_passignopnode5->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25332);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25816);
+show_backtrace(1);
 }
 var_pexprnode6 = var_nodearraylist6;
 /* <var_pexprnode6:nullable Object> isa nullable AExpr */
@@ -3938,26 +3832,25 @@ var15 = var_pexprnode6->type->type_table[cltype16] == idtype17;
 }
 if (!var15) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25334);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25818);
+show_backtrace(1);
 }
-var18 = NEW_parser_nodes__ACallAssignExpr(&type_parser_nodes__ACallAssignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__ACallAssignExpr__init_acallassignexpr]))(var18, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_tassignnode5, var_pexprnode6) /* init_acallassignexpr on <var18:ACallAssignExpr>*/;
-CHECK_NEW_parser_nodes__ACallAssignExpr(var18);
+var18 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var18, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var18:ACallReassignExpr>*/;
 var_pexprnode1 = var18;
 var_node_list = var_pexprnode1;
-var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction664> */
+var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction685> */
 var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction664#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction664__action(val* self, val* p0) {
-parser__ReduceAction664__action(self, p0);
+/* method parser#ReduceAction685#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction685__action(val* self, val* p0) {
+parser__ReduceAction685__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction666#action for (self: ReduceAction666, Parser) */
-void parser__ReduceAction666__action(val* self, val* p0) {
+/* method parser#ReduceAction687#action for (self: ReduceAction687, Parser) */
+void parser__ReduceAction687__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -3977,7 +3870,7 @@ val* var_pexprsnode3 /* var pexprsnode3: nullable Object */;
 short int var6 /* : Bool */;
 int cltype7;
 int idtype8;
-val* var_tassignnode4 /* var tassignnode4: nullable Object */;
+val* var_passignopnode4 /* var passignopnode4: nullable Object */;
 short int var9 /* : Bool */;
 int cltype10;
 int idtype11;
@@ -3985,8 +3878,8 @@ val* var_pexprnode5 /* var pexprnode5: nullable Object */;
 short int var12 /* : Bool */;
 int cltype13;
 int idtype14;
-val* var15 /* : ABraAssignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ABraAssignExpr */;
+val* var15 /* : ABraReassignExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ABraReassignExpr */;
 long var16 /* : Int */;
 long var17 /* : Int */;
 var_p = p0;
@@ -4015,8 +3908,8 @@ var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25356);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25840);
+show_backtrace(1);
 }
 var_pexprsnode3 = var_nodearraylist2;
 /* <var_pexprsnode3:nullable Object> isa nullable AExprs */
@@ -4033,26 +3926,26 @@ var6 = var_pexprsnode3->type->type_table[cltype7] == idtype8;
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25358);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25842);
+show_backtrace(1);
 }
-var_tassignnode4 = var_nodearraylist3;
-/* <var_tassignnode4:nullable Object> isa nullable TAssign */
-cltype10 = type_nullable_parser_nodes__TAssign.color;
-idtype11 = type_nullable_parser_nodes__TAssign.id;
-if(var_tassignnode4 == NULL) {
+var_passignopnode4 = var_nodearraylist3;
+/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
+cltype10 = type_nullable_parser_nodes__AAssignOp.color;
+idtype11 = type_nullable_parser_nodes__AAssignOp.id;
+if(var_passignopnode4 == NULL) {
 var9 = 1;
 } else {
-if(cltype10 >= var_tassignnode4->type->table_size) {
+if(cltype10 >= var_passignopnode4->type->table_size) {
 var9 = 0;
 } else {
-var9 = var_tassignnode4->type->type_table[cltype10] == idtype11;
+var9 = var_passignopnode4->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25360);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25844);
+show_backtrace(1);
 }
 var_pexprnode5 = var_nodearraylist4;
 /* <var_pexprnode5:nullable Object> isa nullable AExpr */
@@ -4069,165 +3962,129 @@ var12 = var_pexprnode5->type->type_table[cltype13] == idtype14;
 }
 if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25362);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25846);
+show_backtrace(1);
 }
-var15 = NEW_parser_nodes__ABraAssignExpr(&type_parser_nodes__ABraAssignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__ABraAssignExpr__init_abraassignexpr]))(var15, var_pexprnode2, var_pexprsnode3, var_tassignnode4, var_pexprnode5) /* init_abraassignexpr on <var15:ABraAssignExpr>*/;
-CHECK_NEW_parser_nodes__ABraAssignExpr(var15);
+var15 = NEW_parser_nodes__ABraReassignExpr(&type_parser_nodes__ABraReassignExpr);
+((void (*)(val*, val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__ABraReassignExpr__init_abrareassignexpr]))(var15, var_pexprnode2, var_pexprsnode3, var_passignopnode4, var_pexprnode5) /* init_abrareassignexpr on <var15:ABraReassignExpr>*/;
 var_pexprnode1 = var15;
 var_node_list = var_pexprnode1;
-var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction666> */
+var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction687> */
 var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction666#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction666__action(val* self, val* p0) {
-parser__ReduceAction666__action(self, p0);
+/* method parser#ReduceAction687#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction687__action(val* self, val* p0) {
+parser__ReduceAction687__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction667#action for (self: ReduceAction667, Parser) */
-void parser__ReduceAction667__action(val* self, val* p0) {
+/* method parser#ReduceAction688#action for (self: ReduceAction688, Parser) */
+void parser__ReduceAction688__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var7 /* : Bool */;
+val* var_tpluseqnode2 /* var tpluseqnode2: nullable Object */;
+short int var2 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var_passignopnode4 /* var passignopnode4: nullable Object */;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var14 /* : Bool */;
-int cltype15;
-int idtype16;
-val* var17 /* : AAttrReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
-long var18 /* : Int */;
-long var19 /* : Int */;
+val* var3 /* : APlusAssignOp */;
+val* var_passignopnode1 /* var passignopnode1: nullable APlusAssignOp */;
+long var4 /* : Int */;
+long var5 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var6;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var7 = 1;
-} else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var7 = 0;
+var_nodearraylist1 = var1;
+var_tpluseqnode2 = var_nodearraylist1;
+/* <var_tpluseqnode2:nullable Object> isa nullable TPluseq */
+cltype = type_nullable_parser_nodes__TPluseq.color;
+idtype = type_nullable_parser_nodes__TPluseq.id;
+if(var_tpluseqnode2 == NULL) {
+var2 = 1;
 } else {
-var7 = var_pexprnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var7) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25385);
-exit(1);
-}
-var_tattridnode3 = var_nodearraylist4;
-/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype9 = type_nullable_parser_nodes__TAttrid.color;
-idtype10 = type_nullable_parser_nodes__TAttrid.id;
-if(var_tattridnode3 == NULL) {
-var8 = 1;
-} else {
-if(cltype9 >= var_tattridnode3->type->table_size) {
-var8 = 0;
+if(cltype >= var_tpluseqnode2->type->table_size) {
+var2 = 0;
 } else {
-var8 = var_tattridnode3->type->type_table[cltype9] == idtype10;
+var2 = var_tpluseqnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var8) {
+if (!var2) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25387);
-exit(1);
-}
-var_passignopnode4 = var_nodearraylist5;
-/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
-cltype12 = type_nullable_parser_nodes__AAssignOp.color;
-idtype13 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode4 == NULL) {
-var11 = 1;
-} else {
-if(cltype12 >= var_passignopnode4->type->table_size) {
-var11 = 0;
-} else {
-var11 = var_passignopnode4->type->type_table[cltype12] == idtype13;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25864);
+show_backtrace(1);
 }
+var3 = NEW_parser_nodes__APlusAssignOp(&type_parser_nodes__APlusAssignOp);
+((void (*)(val*, val*))(var3->class->vft[COLOR_parser_prod__APlusAssignOp__init_aplusassignop]))(var3, var_tpluseqnode2) /* init_aplusassignop on <var3:APlusAssignOp>*/;
+var_passignopnode1 = var3;
+var_node_list = var_passignopnode1;
+var4 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction688> */
+var5 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var4) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var5, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
 }
-if (!var11) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25389);
-exit(1);
+/* method parser#ReduceAction688#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction688__action(val* self, val* p0) {
+parser__ReduceAction688__action(self, p0);
+RET_LABEL:;
 }
-var_pexprnode5 = var_nodearraylist6;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype15 = type_nullable_parser_nodes__AExpr.color;
-idtype16 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var14 = 1;
+/* method parser#ReduceAction689#action for (self: ReduceAction689, Parser) */
+void parser__ReduceAction689__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tminuseqnode2 /* var tminuseqnode2: nullable Object */;
+short int var2 /* : Bool */;
+int cltype;
+int idtype;
+val* var3 /* : AMinusAssignOp */;
+val* var_passignopnode1 /* var passignopnode1: nullable AMinusAssignOp */;
+long var4 /* : Int */;
+long var5 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var1;
+var_tminuseqnode2 = var_nodearraylist1;
+/* <var_tminuseqnode2:nullable Object> isa nullable TMinuseq */
+cltype = type_nullable_parser_nodes__TMinuseq.color;
+idtype = type_nullable_parser_nodes__TMinuseq.id;
+if(var_tminuseqnode2 == NULL) {
+var2 = 1;
 } else {
-if(cltype15 >= var_pexprnode5->type->table_size) {
-var14 = 0;
+if(cltype >= var_tminuseqnode2->type->table_size) {
+var2 = 0;
 } else {
-var14 = var_pexprnode5->type->type_table[cltype15] == idtype16;
+var2 = var_tminuseqnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var14) {
+if (!var2) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25391);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25879);
+show_backtrace(1);
 }
-var17 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var17, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var17:AAttrReassignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrReassignExpr(var17);
-var_pexprnode1 = var17;
-var_node_list = var_pexprnode1;
-var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction667> */
-var19 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var18) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var19, var_node_list) /* push on <var_p:Parser>*/;
+var3 = NEW_parser_nodes__AMinusAssignOp(&type_parser_nodes__AMinusAssignOp);
+((void (*)(val*, val*))(var3->class->vft[COLOR_parser_prod__AMinusAssignOp__init_aminusassignop]))(var3, var_tminuseqnode2) /* init_aminusassignop on <var3:AMinusAssignOp>*/;
+var_passignopnode1 = var3;
+var_node_list = var_passignopnode1;
+var4 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction689> */
+var5 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var4) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var5, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction667#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction667__action(val* self, val* p0) {
-parser__ReduceAction667__action(self, p0);
+/* method parser#ReduceAction689#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction689__action(val* self, val* p0) {
+parser__ReduceAction689__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction668#action for (self: ReduceAction668, Parser) */
-void parser__ReduceAction668__action(val* self, val* p0) {
+/* method parser#ReduceAction690#action for (self: ReduceAction690, Parser) */
+void parser__ReduceAction690__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -4237,24 +4094,22 @@ val* var2 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var3 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var4 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var5 /* : Bool */;
+val* var_tkwdonode2 /* var tkwdonode2: nullable Object */;
+short int var4 /* : Bool */;
 int cltype;
 int idtype;
-val* var_passignopnode4 /* var passignopnode4: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : AAttrReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var5 /* : Bool */;
+int cltype6;
+int idtype7;
+val* var_plabelnode4 /* var plabelnode4: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var11 /* : ADoExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ADoExpr */;
+long var12 /* : Int */;
 long var13 /* : Int */;
-long var14 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
@@ -4264,224 +4119,156 @@ var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist2 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
 var_nodearraylist1 = var3;
-var4 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var4->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var4) /* init_aimplicitselfexpr on <var4:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var4);
-var_pexprnode2 = var4;
-var_tattridnode3 = var_nodearraylist1;
-/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype = type_nullable_parser_nodes__TAttrid.color;
-idtype = type_nullable_parser_nodes__TAttrid.id;
-if(var_tattridnode3 == NULL) {
-var5 = 1;
+var_tkwdonode2 = var_nodearraylist1;
+/* <var_tkwdonode2:nullable Object> isa nullable TKwdo */
+cltype = type_nullable_parser_nodes__TKwdo.color;
+idtype = type_nullable_parser_nodes__TKwdo.id;
+if(var_tkwdonode2 == NULL) {
+var4 = 1;
 } else {
-if(cltype >= var_tattridnode3->type->table_size) {
-var5 = 0;
+if(cltype >= var_tkwdonode2->type->table_size) {
+var4 = 0;
 } else {
-var5 = var_tattridnode3->type->type_table[cltype] == idtype;
+var4 = var_tkwdonode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var5) {
+if (!var4) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25412);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25896);
+show_backtrace(1);
 }
-var_passignopnode4 = var_nodearraylist2;
-/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
-cltype7 = type_nullable_parser_nodes__AAssignOp.color;
-idtype8 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode4 == NULL) {
-var6 = 1;
+var_pexprnode3 = var_nodearraylist2;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype6 = type_nullable_parser_nodes__AExpr.color;
+idtype7 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var5 = 1;
 } else {
-if(cltype7 >= var_passignopnode4->type->table_size) {
-var6 = 0;
+if(cltype6 >= var_pexprnode3->type->table_size) {
+var5 = 0;
 } else {
-var6 = var_passignopnode4->type->type_table[cltype7] == idtype8;
+var5 = var_pexprnode3->type->type_table[cltype6] == idtype7;
 }
 }
-if (!var6) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25414);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25898);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist3;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype10 = type_nullable_parser_nodes__AExpr.color;
-idtype11 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var9 = 1;
+var_plabelnode4 = var_nodearraylist3;
+/* <var_plabelnode4:nullable Object> isa nullable ALabel */
+cltype9 = type_nullable_parser_nodes__ALabel.color;
+idtype10 = type_nullable_parser_nodes__ALabel.id;
+if(var_plabelnode4 == NULL) {
+var8 = 1;
 } else {
-if(cltype10 >= var_pexprnode5->type->table_size) {
-var9 = 0;
+if(cltype9 >= var_plabelnode4->type->table_size) {
+var8 = 0;
 } else {
-var9 = var_pexprnode5->type->type_table[cltype10] == idtype11;
+var8 = var_plabelnode4->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var9) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25416);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25900);
+show_backtrace(1);
 }
-var12 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var12, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var12:AAttrReassignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrReassignExpr(var12);
-var_pexprnode1 = var12;
+var11 = NEW_parser_nodes__ADoExpr(&type_parser_nodes__ADoExpr);
+((void (*)(val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__ADoExpr__init_adoexpr]))(var11, var_tkwdonode2, var_pexprnode3, var_plabelnode4) /* init_adoexpr on <var11:ADoExpr>*/;
+var_pexprnode1 = var11;
 var_node_list = var_pexprnode1;
-var13 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction668> */
-var14 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var13) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var14, var_node_list) /* push on <var_p:Parser>*/;
+var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction690> */
+var13 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var12) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var13, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction668#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction668__action(val* self, val* p0) {
-parser__ReduceAction668__action(self, p0);
+/* method parser#ReduceAction690#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction690__action(val* self, val* p0) {
+parser__ReduceAction690__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction669#action for (self: ReduceAction669, Parser) */
-void parser__ReduceAction669__action(val* self, val* p0) {
+/* method parser#ReduceAction691#action for (self: ReduceAction691, Parser) */
+void parser__ReduceAction691__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var6 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var8 /* : Bool */;
+val* var_tkwdonode2 /* var tkwdonode2: nullable Object */;
+short int var3 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var_passignopnode4 /* var passignopnode4: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var15 /* : Bool */;
-int cltype16;
-int idtype17;
-val* var18 /* : AAttrReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
-long var19 /* : Int */;
-long var20 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var7;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var8 = 1;
-} else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var8 = 0;
-} else {
-var8 = var_pexprnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var8) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25440);
-exit(1);
-}
-var_tattridnode3 = var_nodearraylist5;
-/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype10 = type_nullable_parser_nodes__TAttrid.color;
-idtype11 = type_nullable_parser_nodes__TAttrid.id;
-if(var_tattridnode3 == NULL) {
-var9 = 1;
-} else {
-if(cltype10 >= var_tattridnode3->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_tattridnode3->type->type_table[cltype10] == idtype11;
-}
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25442);
-exit(1);
-}
-var_passignopnode4 = var_nodearraylist6;
-/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
-cltype13 = type_nullable_parser_nodes__AAssignOp.color;
-idtype14 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode4 == NULL) {
-var12 = 1;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var4 /* : Bool */;
+int cltype5;
+int idtype6;
+val* var7 /* : ADoExpr */;
+val* var8 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable ADoExpr */;
+long var9 /* : Int */;
+long var10 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var2;
+var_tkwdonode2 = var_nodearraylist1;
+/* <var_tkwdonode2:nullable Object> isa nullable TKwdo */
+cltype = type_nullable_parser_nodes__TKwdo.color;
+idtype = type_nullable_parser_nodes__TKwdo.id;
+if(var_tkwdonode2 == NULL) {
+var3 = 1;
 } else {
-if(cltype13 >= var_passignopnode4->type->table_size) {
-var12 = 0;
+if(cltype >= var_tkwdonode2->type->table_size) {
+var3 = 0;
 } else {
-var12 = var_passignopnode4->type->type_table[cltype13] == idtype14;
+var3 = var_tkwdonode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var12) {
+if (!var3) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25444);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25918);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist7;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype16 = type_nullable_parser_nodes__AExpr.color;
-idtype17 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var15 = 1;
+var_pexprnode3 = var_nodearraylist2;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype5 = type_nullable_parser_nodes__AExpr.color;
+idtype6 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var4 = 1;
 } else {
-if(cltype16 >= var_pexprnode5->type->table_size) {
-var15 = 0;
+if(cltype5 >= var_pexprnode3->type->table_size) {
+var4 = 0;
 } else {
-var15 = var_pexprnode5->type->type_table[cltype16] == idtype17;
+var4 = var_pexprnode3->type->type_table[cltype5] == idtype6;
 }
 }
-if (!var15) {
+if (!var4) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25446);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25920);
+show_backtrace(1);
 }
-var18 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var18, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var18:AAttrReassignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrReassignExpr(var18);
-var_pexprnode1 = var18;
+var7 = NEW_parser_nodes__ADoExpr(&type_parser_nodes__ADoExpr);
+var8 = NULL;
+((void (*)(val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__ADoExpr__init_adoexpr]))(var7, var_tkwdonode2, var_pexprnode3, var8) /* init_adoexpr on <var7:ADoExpr>*/;
+var_pexprnode1 = var7;
 var_node_list = var_pexprnode1;
-var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction669> */
-var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
+var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction691> */
+var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction669#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction669__action(val* self, val* p0) {
-parser__ReduceAction669__action(self, p0);
+/* method parser#ReduceAction691#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction691__action(val* self, val* p0) {
+parser__ReduceAction691__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction670#action for (self: ReduceAction670, Parser) */
-void parser__ReduceAction670__action(val* self, val* p0) {
+/* method parser#ReduceAction692#action for (self: ReduceAction692, Parser) */
+void parser__ReduceAction692__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -4501,15 +4288,15 @@ val* var7 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var8 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
 short int var9 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
 short int var10 /* : Bool */;
 int cltype11;
 int idtype12;
-val* var_passignopnode4 /* var passignopnode4: nullable Object */;
+val* var_pexprnode4 /* var pexprnode4: nullable Object */;
 short int var13 /* : Bool */;
 int cltype14;
 int idtype15;
@@ -4517,8 +4304,8 @@ val* var_pexprnode5 /* var pexprnode5: nullable Object */;
 short int var16 /* : Bool */;
 int cltype17;
 int idtype18;
-val* var19 /* : AAttrReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
+val* var19 /* : AIfExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
 long var20 /* : Int */;
 long var21 /* : Int */;
 var_p = p0;
@@ -4540,59 +4327,59 @@ var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist2 = var7;
 var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
 var_nodearraylist1 = var8;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
+var_tkwifnode2 = var_nodearraylist1;
+/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
+cltype = type_nullable_parser_nodes__TKwif.color;
+idtype = type_nullable_parser_nodes__TKwif.id;
+if(var_tkwifnode2 == NULL) {
 var9 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
+if(cltype >= var_tkwifnode2->type->table_size) {
 var9 = 0;
 } else {
-var9 = var_pexprnode2->type->type_table[cltype] == idtype;
+var9 = var_tkwifnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25471);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25944);
+show_backtrace(1);
 }
-var_tattridnode3 = var_nodearraylist6;
-/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype11 = type_nullable_parser_nodes__TAttrid.color;
-idtype12 = type_nullable_parser_nodes__TAttrid.id;
-if(var_tattridnode3 == NULL) {
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype11 = type_nullable_parser_nodes__AExpr.color;
+idtype12 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
 var10 = 1;
 } else {
-if(cltype11 >= var_tattridnode3->type->table_size) {
+if(cltype11 >= var_pexprnode3->type->table_size) {
 var10 = 0;
 } else {
-var10 = var_tattridnode3->type->type_table[cltype11] == idtype12;
+var10 = var_pexprnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25473);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25946);
+show_backtrace(1);
 }
-var_passignopnode4 = var_nodearraylist7;
-/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
-cltype14 = type_nullable_parser_nodes__AAssignOp.color;
-idtype15 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode4 == NULL) {
+var_pexprnode4 = var_nodearraylist6;
+/* <var_pexprnode4:nullable Object> isa nullable AExpr */
+cltype14 = type_nullable_parser_nodes__AExpr.color;
+idtype15 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode4 == NULL) {
 var13 = 1;
 } else {
-if(cltype14 >= var_passignopnode4->type->table_size) {
+if(cltype14 >= var_pexprnode4->type->table_size) {
 var13 = 0;
 } else {
-var13 = var_passignopnode4->type->type_table[cltype14] == idtype15;
+var13 = var_pexprnode4->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25475);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25948);
+show_backtrace(1);
 }
 var_pexprnode5 = var_nodearraylist8;
 /* <var_pexprnode5:nullable Object> isa nullable AExpr */
@@ -4609,161 +4396,309 @@ var16 = var_pexprnode5->type->type_table[cltype17] == idtype18;
 }
 if (!var16) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25477);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25950);
+show_backtrace(1);
 }
-var19 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var19->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var19, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var19:AAttrReassignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrReassignExpr(var19);
+var19 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
+((void (*)(val*, val*, val*, val*, val*))(var19->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var19, var_tkwifnode2, var_pexprnode3, var_pexprnode4, var_pexprnode5) /* init_aifexpr on <var19:AIfExpr>*/;
 var_pexprnode1 = var19;
 var_node_list = var_pexprnode1;
-var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction670> */
+var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction692> */
 var21 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var20) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var21, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction670#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction670__action(val* self, val* p0) {
-parser__ReduceAction670__action(self, p0);
+/* method parser#ReduceAction692#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction692__action(val* self, val* p0) {
+parser__ReduceAction692__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction672#action for (self: ReduceAction672, Parser) */
-void parser__ReduceAction672__action(val* self, val* p0) {
+/* method parser#ReduceAction693#action for (self: ReduceAction693, Parser) */
+void parser__ReduceAction693__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var4 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var5 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
-short int var6 /* : Bool */;
+val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var_passignopnode4 /* var passignopnode4: nullable Object */;
-short int var7 /* : Bool */;
-int cltype8;
-int idtype9;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var13 /* : AAttrReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
-long var14 /* : Int */;
-long var15 /* : Int */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var_pexprnode4 /* var pexprnode4: nullable Object */;
+short int var11 /* : Bool */;
+int cltype12;
+int idtype13;
+val* var14 /* : AIfExpr */;
+val* var15 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
+long var16 /* : Int */;
+long var17 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist6 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist5 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
+var_nodearraylist4 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var5);
-var_pexprnode2 = var5;
-var_tattridnode3 = var_nodearraylist2;
-/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype = type_nullable_parser_nodes__TAttrid.color;
-idtype = type_nullable_parser_nodes__TAttrid.id;
-if(var_tattridnode3 == NULL) {
-var6 = 1;
+var_nodearraylist3 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var6;
+var_tkwifnode2 = var_nodearraylist1;
+/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
+cltype = type_nullable_parser_nodes__TKwif.color;
+idtype = type_nullable_parser_nodes__TKwif.id;
+if(var_tkwifnode2 == NULL) {
+var7 = 1;
 } else {
-if(cltype >= var_tattridnode3->type->table_size) {
-var6 = 0;
+if(cltype >= var_tkwifnode2->type->table_size) {
+var7 = 0;
 } else {
-var6 = var_tattridnode3->type->type_table[cltype] == idtype;
+var7 = var_tkwifnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var6) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25499);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25973);
+show_backtrace(1);
 }
-var_passignopnode4 = var_nodearraylist3;
-/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
-cltype8 = type_nullable_parser_nodes__AAssignOp.color;
-idtype9 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode4 == NULL) {
-var7 = 1;
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype9 = type_nullable_parser_nodes__AExpr.color;
+idtype10 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var8 = 1;
 } else {
-if(cltype8 >= var_passignopnode4->type->table_size) {
-var7 = 0;
+if(cltype9 >= var_pexprnode3->type->table_size) {
+var8 = 0;
 } else {
-var7 = var_passignopnode4->type->type_table[cltype8] == idtype9;
+var8 = var_pexprnode3->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var7) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25501);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25975);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist4;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+var_pexprnode4 = var_nodearraylist6;
+/* <var_pexprnode4:nullable Object> isa nullable AExpr */
+cltype12 = type_nullable_parser_nodes__AExpr.color;
+idtype13 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode4 == NULL) {
+var11 = 1;
+} else {
+if(cltype12 >= var_pexprnode4->type->table_size) {
+var11 = 0;
+} else {
+var11 = var_pexprnode4->type->type_table[cltype12] == idtype13;
+}
+}
+if (!var11) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25977);
+show_backtrace(1);
+}
+var14 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
+var15 = NULL;
+((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var14, var_tkwifnode2, var_pexprnode3, var_pexprnode4, var15) /* init_aifexpr on <var14:AIfExpr>*/;
+var_pexprnode1 = var14;
+var_node_list = var_pexprnode1;
+var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction693> */
+var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction693#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction693__action(val* self, val* p0) {
+parser__ReduceAction693__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction694#action for (self: ReduceAction694, Parser) */
+void parser__ReduceAction694__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var8 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
+short int var9 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var10 /* : Bool */;
+int cltype11;
+int idtype12;
+val* var_pexprnode4 /* var pexprnode4: nullable Object */;
+short int var13 /* : Bool */;
+int cltype14;
+int idtype15;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var16 /* : Bool */;
+int cltype17;
+int idtype18;
+val* var19 /* : AIfExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
+long var20 /* : Int */;
+long var21 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist8 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist7 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist6 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var8;
+var_tkwifnode2 = var_nodearraylist1;
+/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
+cltype = type_nullable_parser_nodes__TKwif.color;
+idtype = type_nullable_parser_nodes__TKwif.id;
+if(var_tkwifnode2 == NULL) {
+var9 = 1;
+} else {
+if(cltype >= var_tkwifnode2->type->table_size) {
+var9 = 0;
+} else {
+var9 = var_tkwifnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var9) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26002);
+show_backtrace(1);
+}
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
 cltype11 = type_nullable_parser_nodes__AExpr.color;
 idtype12 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
+if(var_pexprnode3 == NULL) {
 var10 = 1;
 } else {
-if(cltype11 >= var_pexprnode5->type->table_size) {
+if(cltype11 >= var_pexprnode3->type->table_size) {
 var10 = 0;
 } else {
-var10 = var_pexprnode5->type->type_table[cltype11] == idtype12;
+var10 = var_pexprnode3->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25503);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26004);
+show_backtrace(1);
 }
-var13 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var13, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var13:AAttrReassignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrReassignExpr(var13);
-var_pexprnode1 = var13;
+var_pexprnode4 = var_nodearraylist7;
+/* <var_pexprnode4:nullable Object> isa nullable AExpr */
+cltype14 = type_nullable_parser_nodes__AExpr.color;
+idtype15 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode4 == NULL) {
+var13 = 1;
+} else {
+if(cltype14 >= var_pexprnode4->type->table_size) {
+var13 = 0;
+} else {
+var13 = var_pexprnode4->type->type_table[cltype14] == idtype15;
+}
+}
+if (!var13) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26006);
+show_backtrace(1);
+}
+var_pexprnode5 = var_nodearraylist8;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype17 = type_nullable_parser_nodes__AExpr.color;
+idtype18 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var16 = 1;
+} else {
+if(cltype17 >= var_pexprnode5->type->table_size) {
+var16 = 0;
+} else {
+var16 = var_pexprnode5->type->type_table[cltype17] == idtype18;
+}
+}
+if (!var16) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26008);
+show_backtrace(1);
+}
+var19 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
+((void (*)(val*, val*, val*, val*, val*))(var19->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var19, var_tkwifnode2, var_pexprnode3, var_pexprnode4, var_pexprnode5) /* init_aifexpr on <var19:AIfExpr>*/;
+var_pexprnode1 = var19;
 var_node_list = var_pexprnode1;
-var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction672> */
-var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
+var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction694> */
+var21 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var20) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var21, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction672#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction672__action(val* self, val* p0) {
-parser__ReduceAction672__action(self, p0);
+/* method parser#ReduceAction694#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction694__action(val* self, val* p0) {
+parser__ReduceAction694__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction673#action for (self: ReduceAction673, Parser) */
-void parser__ReduceAction673__action(val* self, val* p0) {
+/* method parser#ReduceAction695#action for (self: ReduceAction695, Parser) */
+void parser__ReduceAction695__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var4 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
 val* var5 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var6 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
 short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var_passignopnode4 /* var passignopnode4: nullable Object */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
 short int var8 /* : Bool */;
 int cltype9;
 int idtype10;
@@ -4771,64 +4706,63 @@ val* var_pexprnode5 /* var pexprnode5: nullable Object */;
 short int var11 /* : Bool */;
 int cltype12;
 int idtype13;
-val* var14 /* : AAttrReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAttrReassignExpr */;
-long var15 /* : Int */;
+val* var14 /* : AIfExpr */;
+val* var15 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
 long var16 /* : Int */;
+long var17 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var1;
+var_nodearraylist6 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var2;
+var_nodearraylist5 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var3;
+var_nodearraylist4 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var4;
+var_nodearraylist3 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var5;
-var6 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var6->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var6) /* init_aimplicitselfexpr on <var6:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var6);
-var_pexprnode2 = var6;
-var_tattridnode3 = var_nodearraylist3;
-/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
-cltype = type_nullable_parser_nodes__TAttrid.color;
-idtype = type_nullable_parser_nodes__TAttrid.id;
-if(var_tattridnode3 == NULL) {
+var_nodearraylist2 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var6;
+var_tkwifnode2 = var_nodearraylist1;
+/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
+cltype = type_nullable_parser_nodes__TKwif.color;
+idtype = type_nullable_parser_nodes__TKwif.id;
+if(var_tkwifnode2 == NULL) {
 var7 = 1;
 } else {
-if(cltype >= var_tattridnode3->type->table_size) {
+if(cltype >= var_tkwifnode2->type->table_size) {
 var7 = 0;
 } else {
-var7 = var_tattridnode3->type->type_table[cltype] == idtype;
+var7 = var_tkwifnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25526);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26031);
+show_backtrace(1);
 }
-var_passignopnode4 = var_nodearraylist4;
-/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
-cltype9 = type_nullable_parser_nodes__AAssignOp.color;
-idtype10 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode4 == NULL) {
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype9 = type_nullable_parser_nodes__AExpr.color;
+idtype10 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
 var8 = 1;
 } else {
-if(cltype9 >= var_passignopnode4->type->table_size) {
+if(cltype9 >= var_pexprnode3->type->table_size) {
 var8 = 0;
 } else {
-var8 = var_passignopnode4->type->type_table[cltype9] == idtype10;
+var8 = var_pexprnode3->type->type_table[cltype9] == idtype10;
 }
 }
 if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25528);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26033);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist5;
+var_pexprnode5 = var_nodearraylist6;
 /* <var_pexprnode5:nullable Object> isa nullable AExpr */
 cltype12 = type_nullable_parser_nodes__AExpr.color;
 idtype13 = type_nullable_parser_nodes__AExpr.id;
@@ -4843,26 +4777,26 @@ var11 = var_pexprnode5->type->type_table[cltype12] == idtype13;
 }
 if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25530);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26035);
+show_backtrace(1);
 }
-var14 = NEW_parser_nodes__AAttrReassignExpr(&type_parser_nodes__AAttrReassignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AAttrReassignExpr__init_aattrreassignexpr]))(var14, var_pexprnode2, var_tattridnode3, var_passignopnode4, var_pexprnode5) /* init_aattrreassignexpr on <var14:AAttrReassignExpr>*/;
-CHECK_NEW_parser_nodes__AAttrReassignExpr(var14);
-var_pexprnode1 = var14;
-var_node_list = var_pexprnode1;
-var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction673> */
-var16 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var15) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var16, var_node_list) /* push on <var_p:Parser>*/;
+var14 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
+var15 = NULL;
+((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var14, var_tkwifnode2, var_pexprnode3, var15, var_pexprnode5) /* init_aifexpr on <var14:AIfExpr>*/;
+var_pexprnode1 = var14;
+var_node_list = var_pexprnode1;
+var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction695> */
+var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction673#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction673__action(val* self, val* p0) {
-parser__ReduceAction673__action(self, p0);
+/* method parser#ReduceAction695#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction695__action(val* self, val* p0) {
+parser__ReduceAction695__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction675#action for (self: ReduceAction675, Parser) */
-void parser__ReduceAction675__action(val* self, val* p0) {
+/* method parser#ReduceAction696#action for (self: ReduceAction696, Parser) */
+void parser__ReduceAction696__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -4880,30 +4814,23 @@ val* var6 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var7 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
 short int var8 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
 short int var9 /* : Bool */;
 int cltype10;
 int idtype11;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
 short int var12 /* : Bool */;
 int cltype13;
 int idtype14;
-val* var_passignopnode5 /* var passignopnode5: nullable Object */;
-short int var15 /* : Bool */;
-int cltype16;
-int idtype17;
-val* var_pexprnode6 /* var pexprnode6: nullable Object */;
-short int var18 /* : Bool */;
-int cltype19;
-int idtype20;
-val* var21 /* : ACallReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
-long var22 /* : Int */;
-long var23 /* : Int */;
+val* var15 /* : AIfExpr */;
+val* var16 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
+long var17 /* : Int */;
+long var18 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
@@ -4921,3280 +4848,2914 @@ var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist2 = var6;
 var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
 var_nodearraylist1 = var7;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
+var_tkwifnode2 = var_nodearraylist1;
+/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
+cltype = type_nullable_parser_nodes__TKwif.color;
+idtype = type_nullable_parser_nodes__TKwif.id;
+if(var_tkwifnode2 == NULL) {
 var8 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
+if(cltype >= var_tkwifnode2->type->table_size) {
 var8 = 0;
 } else {
-var8 = var_pexprnode2->type->type_table[cltype] == idtype;
+var8 = var_tkwifnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25554);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26059);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist4;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype10 = type_nullable_parser_nodes__TId.color;
-idtype11 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype10 = type_nullable_parser_nodes__AExpr.color;
+idtype11 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
 var9 = 1;
 } else {
-if(cltype10 >= var_tidnode3->type->table_size) {
+if(cltype10 >= var_pexprnode3->type->table_size) {
 var9 = 0;
 } else {
-var9 = var_tidnode3->type->type_table[cltype10] == idtype11;
+var9 = var_pexprnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25556);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26061);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist5;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype13 = type_nullable_parser_nodes__AExprs.color;
-idtype14 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
+var_pexprnode5 = var_nodearraylist7;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype13 = type_nullable_parser_nodes__AExpr.color;
+idtype14 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
 var12 = 1;
 } else {
-if(cltype13 >= var_pexprsnode4->type->table_size) {
+if(cltype13 >= var_pexprnode5->type->table_size) {
 var12 = 0;
 } else {
-var12 = var_pexprsnode4->type->type_table[cltype13] == idtype14;
+var12 = var_pexprnode5->type->type_table[cltype13] == idtype14;
 }
 }
 if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25558);
-exit(1);
-}
-var_passignopnode5 = var_nodearraylist6;
-/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
-cltype16 = type_nullable_parser_nodes__AAssignOp.color;
-idtype17 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode5 == NULL) {
-var15 = 1;
-} else {
-if(cltype16 >= var_passignopnode5->type->table_size) {
-var15 = 0;
-} else {
-var15 = var_passignopnode5->type->type_table[cltype16] == idtype17;
-}
-}
-if (!var15) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25560);
-exit(1);
-}
-var_pexprnode6 = var_nodearraylist7;
-/* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype19 = type_nullable_parser_nodes__AExpr.color;
-idtype20 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode6 == NULL) {
-var18 = 1;
-} else {
-if(cltype19 >= var_pexprnode6->type->table_size) {
-var18 = 0;
-} else {
-var18 = var_pexprnode6->type->type_table[cltype19] == idtype20;
-}
-}
-if (!var18) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25562);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26063);
+show_backtrace(1);
 }
-var21 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var21, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var21:ACallReassignExpr>*/;
-CHECK_NEW_parser_nodes__ACallReassignExpr(var21);
-var_pexprnode1 = var21;
+var15 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
+var16 = NULL;
+((void (*)(val*, val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var15, var_tkwifnode2, var_pexprnode3, var16, var_pexprnode5) /* init_aifexpr on <var15:AIfExpr>*/;
+var_pexprnode1 = var15;
 var_node_list = var_pexprnode1;
-var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction675> */
-var23 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var22) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var23, var_node_list) /* push on <var_p:Parser>*/;
+var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction696> */
+var18 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var17) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var18, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction675#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction675__action(val* self, val* p0) {
-parser__ReduceAction675__action(self, p0);
+/* method parser#ReduceAction696#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction696__action(val* self, val* p0) {
+parser__ReduceAction696__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction676#action for (self: ReduceAction676, Parser) */
-void parser__ReduceAction676__action(val* self, val* p0) {
+/* method parser#ReduceAction699#action for (self: ReduceAction699, Parser) */
+void parser__ReduceAction699__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var3 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var5 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var6 /* : Bool */;
+val* var_tkwloopnode2 /* var tkwloopnode2: nullable Object */;
+short int var4 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var7 /* : Bool */;
-int cltype8;
-int idtype9;
-val* var_passignopnode5 /* var passignopnode5: nullable Object */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var_pexprnode6 /* var pexprnode6: nullable Object */;
-short int var13 /* : Bool */;
-int cltype14;
-int idtype15;
-val* var16 /* : ACallReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
-long var17 /* : Int */;
-long var18 /* : Int */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var5 /* : Bool */;
+int cltype6;
+int idtype7;
+val* var_plabelnode4 /* var plabelnode4: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var11 /* : ALoopExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ALoopExpr */;
+long var12 /* : Int */;
+long var13 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist3 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist2 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var5);
-var_pexprnode2 = var5;
-var_tidnode3 = var_nodearraylist1;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype = type_nullable_parser_nodes__TId.color;
-idtype = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var6 = 1;
+var_nodearraylist1 = var3;
+var_tkwloopnode2 = var_nodearraylist1;
+/* <var_tkwloopnode2:nullable Object> isa nullable TKwloop */
+cltype = type_nullable_parser_nodes__TKwloop.color;
+idtype = type_nullable_parser_nodes__TKwloop.id;
+if(var_tkwloopnode2 == NULL) {
+var4 = 1;
 } else {
-if(cltype >= var_tidnode3->type->table_size) {
-var6 = 0;
+if(cltype >= var_tkwloopnode2->type->table_size) {
+var4 = 0;
 } else {
-var6 = var_tidnode3->type->type_table[cltype] == idtype;
+var4 = var_tkwloopnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var6) {
+if (!var4) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25585);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26083);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist2;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype8 = type_nullable_parser_nodes__AExprs.color;
-idtype9 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var7 = 1;
+var_pexprnode3 = var_nodearraylist2;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype6 = type_nullable_parser_nodes__AExpr.color;
+idtype7 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var5 = 1;
 } else {
-if(cltype8 >= var_pexprsnode4->type->table_size) {
-var7 = 0;
+if(cltype6 >= var_pexprnode3->type->table_size) {
+var5 = 0;
 } else {
-var7 = var_pexprsnode4->type->type_table[cltype8] == idtype9;
+var5 = var_pexprnode3->type->type_table[cltype6] == idtype7;
 }
 }
-if (!var7) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25587);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26085);
+show_backtrace(1);
 }
-var_passignopnode5 = var_nodearraylist3;
-/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
-cltype11 = type_nullable_parser_nodes__AAssignOp.color;
-idtype12 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode5 == NULL) {
-var10 = 1;
+var_plabelnode4 = var_nodearraylist3;
+/* <var_plabelnode4:nullable Object> isa nullable ALabel */
+cltype9 = type_nullable_parser_nodes__ALabel.color;
+idtype10 = type_nullable_parser_nodes__ALabel.id;
+if(var_plabelnode4 == NULL) {
+var8 = 1;
 } else {
-if(cltype11 >= var_passignopnode5->type->table_size) {
-var10 = 0;
+if(cltype9 >= var_plabelnode4->type->table_size) {
+var8 = 0;
 } else {
-var10 = var_passignopnode5->type->type_table[cltype11] == idtype12;
+var8 = var_plabelnode4->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var10) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25589);
-exit(1);
-}
-var_pexprnode6 = var_nodearraylist4;
-/* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype14 = type_nullable_parser_nodes__AExpr.color;
-idtype15 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode6 == NULL) {
-var13 = 1;
-} else {
-if(cltype14 >= var_pexprnode6->type->table_size) {
-var13 = 0;
-} else {
-var13 = var_pexprnode6->type->type_table[cltype14] == idtype15;
-}
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26087);
+show_backtrace(1);
 }
-if (!var13) {
+var11 = NEW_parser_nodes__ALoopExpr(&type_parser_nodes__ALoopExpr);
+((void (*)(val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__ALoopExpr__init_aloopexpr]))(var11, var_tkwloopnode2, var_pexprnode3, var_plabelnode4) /* init_aloopexpr on <var11:ALoopExpr>*/;
+var_pexprnode1 = var11;
+var_node_list = var_pexprnode1;
+var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction699> */
+var13 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var12) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var13, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction699#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction699__action(val* self, val* p0) {
+parser__ReduceAction699__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction700#action for (self: ReduceAction700, Parser) */
+void parser__ReduceAction700__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tkwloopnode2 /* var tkwloopnode2: nullable Object */;
+short int var3 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var4 /* : Bool */;
+int cltype5;
+int idtype6;
+val* var7 /* : ALoopExpr */;
+val* var8 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable ALoopExpr */;
+long var9 /* : Int */;
+long var10 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var2;
+var_tkwloopnode2 = var_nodearraylist1;
+/* <var_tkwloopnode2:nullable Object> isa nullable TKwloop */
+cltype = type_nullable_parser_nodes__TKwloop.color;
+idtype = type_nullable_parser_nodes__TKwloop.id;
+if(var_tkwloopnode2 == NULL) {
+var3 = 1;
+} else {
+if(cltype >= var_tkwloopnode2->type->table_size) {
+var3 = 0;
+} else {
+var3 = var_tkwloopnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var3) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25591);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26105);
+show_backtrace(1);
 }
-var16 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var16, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var16:ACallReassignExpr>*/;
-CHECK_NEW_parser_nodes__ACallReassignExpr(var16);
-var_pexprnode1 = var16;
+var_pexprnode3 = var_nodearraylist2;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype5 = type_nullable_parser_nodes__AExpr.color;
+idtype6 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var4 = 1;
+} else {
+if(cltype5 >= var_pexprnode3->type->table_size) {
+var4 = 0;
+} else {
+var4 = var_pexprnode3->type->type_table[cltype5] == idtype6;
+}
+}
+if (!var4) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26107);
+show_backtrace(1);
+}
+var7 = NEW_parser_nodes__ALoopExpr(&type_parser_nodes__ALoopExpr);
+var8 = NULL;
+((void (*)(val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__ALoopExpr__init_aloopexpr]))(var7, var_tkwloopnode2, var_pexprnode3, var8) /* init_aloopexpr on <var7:ALoopExpr>*/;
+var_pexprnode1 = var7;
 var_node_list = var_pexprnode1;
-var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction676> */
-var18 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var17) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var18, var_node_list) /* push on <var_p:Parser>*/;
+var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction700> */
+var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction676#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction676__action(val* self, val* p0) {
-parser__ReduceAction676__action(self, p0);
+/* method parser#ReduceAction700#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction700__action(val* self, val* p0) {
+parser__ReduceAction700__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction677#action for (self: ReduceAction677, Parser) */
-void parser__ReduceAction677__action(val* self, val* p0) {
+/* method parser#ReduceAction701#action for (self: ReduceAction701, Parser) */
+void parser__ReduceAction701__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var2 /* : nullable Object */;
 val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var3 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var5 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var6 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var8 /* : nullable Object */;
+val* var7 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var9 /* : Bool */;
+val* var_tkwwhilenode2 /* var tkwwhilenode2: nullable Object */;
+short int var8 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var13 /* : Bool */;
-int cltype14;
-int idtype15;
-val* var_passignopnode5 /* var passignopnode5: nullable Object */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var_pexprnode6 /* var pexprnode6: nullable Object */;
-short int var19 /* : Bool */;
-int cltype20;
-int idtype21;
-val* var22 /* : ACallReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var_tkwdonode4 /* var tkwdonode4: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var15 /* : Bool */;
+int cltype16;
+int idtype17;
+val* var_plabelnode6 /* var plabelnode6: nullable Object */;
+short int var18 /* : Bool */;
+int cltype19;
+int idtype20;
+val* var21 /* : AWhileExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AWhileExpr */;
+long var22 /* : Int */;
 long var23 /* : Int */;
-long var24 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var1;
+var_nodearraylist7 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var2;
+var_nodearraylist6 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var3;
+var_nodearraylist5 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var4;
+var_nodearraylist4 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var5;
+var_nodearraylist3 = var5;
 var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var6;
+var_nodearraylist2 = var6;
 var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var8;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
+var_nodearraylist1 = var7;
+var_tkwwhilenode2 = var_nodearraylist1;
+/* <var_tkwwhilenode2:nullable Object> isa nullable TKwwhile */
+cltype = type_nullable_parser_nodes__TKwwhile.color;
+idtype = type_nullable_parser_nodes__TKwwhile.id;
+if(var_tkwwhilenode2 == NULL) {
+var8 = 1;
+} else {
+if(cltype >= var_tkwwhilenode2->type->table_size) {
+var8 = 0;
+} else {
+var8 = var_tkwwhilenode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var8) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26130);
+show_backtrace(1);
+}
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype10 = type_nullable_parser_nodes__AExpr.color;
+idtype11 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
 var9 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
+if(cltype10 >= var_pexprnode3->type->table_size) {
 var9 = 0;
 } else {
-var9 = var_pexprnode2->type->type_table[cltype] == idtype;
+var9 = var_pexprnode3->type->type_table[cltype10] == idtype11;
 }
 }
 if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25617);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26132);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist5;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype11 = type_nullable_parser_nodes__TId.color;
-idtype12 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var10 = 1;
+var_tkwdonode4 = var_nodearraylist5;
+/* <var_tkwdonode4:nullable Object> isa nullable TKwdo */
+cltype13 = type_nullable_parser_nodes__TKwdo.color;
+idtype14 = type_nullable_parser_nodes__TKwdo.id;
+if(var_tkwdonode4 == NULL) {
+var12 = 1;
 } else {
-if(cltype11 >= var_tidnode3->type->table_size) {
-var10 = 0;
+if(cltype13 >= var_tkwdonode4->type->table_size) {
+var12 = 0;
 } else {
-var10 = var_tidnode3->type->type_table[cltype11] == idtype12;
+var12 = var_tkwdonode4->type->type_table[cltype13] == idtype14;
 }
 }
-if (!var10) {
+if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25619);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26134);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist6;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype14 = type_nullable_parser_nodes__AExprs.color;
-idtype15 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var13 = 1;
+var_pexprnode5 = var_nodearraylist6;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype16 = type_nullable_parser_nodes__AExpr.color;
+idtype17 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var15 = 1;
 } else {
-if(cltype14 >= var_pexprsnode4->type->table_size) {
-var13 = 0;
+if(cltype16 >= var_pexprnode5->type->table_size) {
+var15 = 0;
 } else {
-var13 = var_pexprsnode4->type->type_table[cltype14] == idtype15;
+var15 = var_pexprnode5->type->type_table[cltype16] == idtype17;
 }
 }
-if (!var13) {
+if (!var15) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25621);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26136);
+show_backtrace(1);
 }
-var_passignopnode5 = var_nodearraylist7;
-/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
-cltype17 = type_nullable_parser_nodes__AAssignOp.color;
-idtype18 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode5 == NULL) {
-var16 = 1;
+var_plabelnode6 = var_nodearraylist7;
+/* <var_plabelnode6:nullable Object> isa nullable ALabel */
+cltype19 = type_nullable_parser_nodes__ALabel.color;
+idtype20 = type_nullable_parser_nodes__ALabel.id;
+if(var_plabelnode6 == NULL) {
+var18 = 1;
 } else {
-if(cltype17 >= var_passignopnode5->type->table_size) {
-var16 = 0;
+if(cltype19 >= var_plabelnode6->type->table_size) {
+var18 = 0;
 } else {
-var16 = var_passignopnode5->type->type_table[cltype17] == idtype18;
+var18 = var_plabelnode6->type->type_table[cltype19] == idtype20;
 }
 }
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25623);
-exit(1);
-}
-var_pexprnode6 = var_nodearraylist8;
-/* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype20 = type_nullable_parser_nodes__AExpr.color;
-idtype21 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode6 == NULL) {
-var19 = 1;
-} else {
-if(cltype20 >= var_pexprnode6->type->table_size) {
-var19 = 0;
-} else {
-var19 = var_pexprnode6->type->type_table[cltype20] == idtype21;
-}
-}
-if (!var19) {
+if (!var18) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25625);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26138);
+show_backtrace(1);
 }
-var22 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var22->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var22, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var22:ACallReassignExpr>*/;
-CHECK_NEW_parser_nodes__ACallReassignExpr(var22);
-var_pexprnode1 = var22;
+var21 = NEW_parser_nodes__AWhileExpr(&type_parser_nodes__AWhileExpr);
+((void (*)(val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AWhileExpr__init_awhileexpr]))(var21, var_tkwwhilenode2, var_pexprnode3, var_tkwdonode4, var_pexprnode5, var_plabelnode6) /* init_awhileexpr on <var21:AWhileExpr>*/;
+var_pexprnode1 = var21;
 var_node_list = var_pexprnode1;
-var23 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction677> */
-var24 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var23) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var24, var_node_list) /* push on <var_p:Parser>*/;
+var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction701> */
+var23 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var22) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var23, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction677#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction677__action(val* self, val* p0) {
-parser__ReduceAction677__action(self, p0);
+/* method parser#ReduceAction701#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction701__action(val* self, val* p0) {
+parser__ReduceAction701__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction678#action for (self: ReduceAction678, Parser) */
-void parser__ReduceAction678__action(val* self, val* p0) {
+/* method parser#ReduceAction702#action for (self: ReduceAction702, Parser) */
+void parser__ReduceAction702__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var4 /* : nullable Object */;
 val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var8 /* : nullable Object */;
+val* var5 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var9 /* : nullable Object */;
+val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var10 /* : Bool */;
+val* var_tkwwhilenode2 /* var tkwwhilenode2: nullable Object */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var_tkwdonode4 /* var tkwdonode4: nullable Object */;
 short int var11 /* : Bool */;
 int cltype12;
 int idtype13;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
 short int var14 /* : Bool */;
 int cltype15;
 int idtype16;
-val* var_passignopnode5 /* var passignopnode5: nullable Object */;
-short int var17 /* : Bool */;
-int cltype18;
-int idtype19;
-val* var_pexprnode6 /* var pexprnode6: nullable Object */;
-short int var20 /* : Bool */;
-int cltype21;
-int idtype22;
-val* var23 /* : ACallReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
-long var24 /* : Int */;
-long var25 /* : Int */;
+val* var17 /* : AWhileExpr */;
+val* var18 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AWhileExpr */;
+long var19 /* : Int */;
+long var20 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist9 = var1;
+var_nodearraylist6 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var2;
+var_nodearraylist5 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var3;
+var_nodearraylist4 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var4;
+var_nodearraylist3 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var5;
+var_nodearraylist2 = var5;
 var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var8;
-var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var9;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var10 = 1;
-} else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var10 = 0;
-} else {
-var10 = var_pexprnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var10) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25652);
-exit(1);
-}
-var_tidnode3 = var_nodearraylist6;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype12 = type_nullable_parser_nodes__TId.color;
-idtype13 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var11 = 1;
+var_nodearraylist1 = var6;
+var_tkwwhilenode2 = var_nodearraylist1;
+/* <var_tkwwhilenode2:nullable Object> isa nullable TKwwhile */
+cltype = type_nullable_parser_nodes__TKwwhile.color;
+idtype = type_nullable_parser_nodes__TKwwhile.id;
+if(var_tkwwhilenode2 == NULL) {
+var7 = 1;
 } else {
-if(cltype12 >= var_tidnode3->type->table_size) {
-var11 = 0;
+if(cltype >= var_tkwwhilenode2->type->table_size) {
+var7 = 0;
 } else {
-var11 = var_tidnode3->type->type_table[cltype12] == idtype13;
+var7 = var_tkwwhilenode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var11) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25654);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26162);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist7;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype15 = type_nullable_parser_nodes__AExprs.color;
-idtype16 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var14 = 1;
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype9 = type_nullable_parser_nodes__AExpr.color;
+idtype10 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var8 = 1;
 } else {
-if(cltype15 >= var_pexprsnode4->type->table_size) {
-var14 = 0;
+if(cltype9 >= var_pexprnode3->type->table_size) {
+var8 = 0;
 } else {
-var14 = var_pexprsnode4->type->type_table[cltype15] == idtype16;
+var8 = var_pexprnode3->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var14) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25656);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26164);
+show_backtrace(1);
 }
-var_passignopnode5 = var_nodearraylist8;
-/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
-cltype18 = type_nullable_parser_nodes__AAssignOp.color;
-idtype19 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode5 == NULL) {
-var17 = 1;
+var_tkwdonode4 = var_nodearraylist5;
+/* <var_tkwdonode4:nullable Object> isa nullable TKwdo */
+cltype12 = type_nullable_parser_nodes__TKwdo.color;
+idtype13 = type_nullable_parser_nodes__TKwdo.id;
+if(var_tkwdonode4 == NULL) {
+var11 = 1;
 } else {
-if(cltype18 >= var_passignopnode5->type->table_size) {
-var17 = 0;
+if(cltype12 >= var_tkwdonode4->type->table_size) {
+var11 = 0;
 } else {
-var17 = var_passignopnode5->type->type_table[cltype18] == idtype19;
+var11 = var_tkwdonode4->type->type_table[cltype12] == idtype13;
 }
 }
-if (!var17) {
+if (!var11) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25658);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26166);
+show_backtrace(1);
 }
-var_pexprnode6 = var_nodearraylist9;
-/* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype21 = type_nullable_parser_nodes__AExpr.color;
-idtype22 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode6 == NULL) {
-var20 = 1;
+var_pexprnode5 = var_nodearraylist6;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype15 = type_nullable_parser_nodes__AExpr.color;
+idtype16 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var14 = 1;
 } else {
-if(cltype21 >= var_pexprnode6->type->table_size) {
-var20 = 0;
+if(cltype15 >= var_pexprnode5->type->table_size) {
+var14 = 0;
 } else {
-var20 = var_pexprnode6->type->type_table[cltype21] == idtype22;
+var14 = var_pexprnode5->type->type_table[cltype15] == idtype16;
 }
 }
-if (!var20) {
+if (!var14) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25660);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26168);
+show_backtrace(1);
 }
-var23 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var23->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var23, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var23:ACallReassignExpr>*/;
-CHECK_NEW_parser_nodes__ACallReassignExpr(var23);
-var_pexprnode1 = var23;
+var17 = NEW_parser_nodes__AWhileExpr(&type_parser_nodes__AWhileExpr);
+var18 = NULL;
+((void (*)(val*, val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AWhileExpr__init_awhileexpr]))(var17, var_tkwwhilenode2, var_pexprnode3, var_tkwdonode4, var_pexprnode5, var18) /* init_awhileexpr on <var17:AWhileExpr>*/;
+var_pexprnode1 = var17;
 var_node_list = var_pexprnode1;
-var24 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction678> */
-var25 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var24) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var25, var_node_list) /* push on <var_p:Parser>*/;
+var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction702> */
+var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction678#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction678__action(val* self, val* p0) {
-parser__ReduceAction678__action(self, p0);
+/* method parser#ReduceAction702#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction702__action(val* self, val* p0) {
+parser__ReduceAction702__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction680#action for (self: ReduceAction680, Parser) */
-void parser__ReduceAction680__action(val* self, val* p0) {
+/* method parser#ReduceAction703#action for (self: ReduceAction703, Parser) */
+void parser__ReduceAction703__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var_nodearraylist15 /* var nodearraylist15: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist14 /* var nodearraylist14: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist13 /* var nodearraylist13: nullable Object */;
 val* var4 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist12 /* var nodearraylist12: nullable Object */;
 val* var5 /* : nullable Object */;
+val* var_nodearraylist11 /* var nodearraylist11: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
+val* var8 /* : nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
+val* var9 /* : nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
+val* var10 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var11 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var12 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var13 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var14 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var15 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var6 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var7 /* : Bool */;
+val* var16 /* : Array[Object] */;
+val* var_listnode4 /* var listnode4: Array[Object] */;
+val* var_tkwfornode2 /* var tkwfornode2: nullable Object */;
+short int var17 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var_passignopnode5 /* var passignopnode5: nullable Object */;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
-val* var_pexprnode6 /* var pexprnode6: nullable Object */;
-short int var14 /* : Bool */;
-int cltype15;
-int idtype16;
-val* var17 /* : ACallReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
-long var18 /* : Int */;
-long var19 /* : Int */;
+val* var_listnode3 /* var listnode3: nullable Object */;
+short int var18 /* : Bool */;
+int cltype19;
+int idtype20;
+val* var21 /* : Array[Object] */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var22 /* : Bool */;
+int cltype23;
+int idtype24;
+val* var_tkwdonode6 /* var tkwdonode6: nullable Object */;
+short int var25 /* : Bool */;
+int cltype26;
+int idtype27;
+val* var_pexprnode7 /* var pexprnode7: nullable Object */;
+short int var28 /* : Bool */;
+int cltype29;
+int idtype30;
+val* var_plabelnode8 /* var plabelnode8: nullable Object */;
+short int var31 /* : Bool */;
+int cltype32;
+int idtype33;
+val* var34 /* : AForExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AForExpr */;
+long var35 /* : Int */;
+long var36 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var1;
+var_nodearraylist15 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var2;
+var_nodearraylist14 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var3;
+var_nodearraylist13 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var4;
+var_nodearraylist12 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var5;
-var6 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var6->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var6) /* init_aimplicitselfexpr on <var6:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var6);
-var_pexprnode2 = var6;
-var_tidnode3 = var_nodearraylist2;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype = type_nullable_parser_nodes__TId.color;
-idtype = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var7 = 1;
+var_nodearraylist11 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist10 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist9 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist8 = var8;
+var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist7 = var9;
+var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist6 = var10;
+var11 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var11;
+var12 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var12;
+var13 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var13;
+var14 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var14;
+var15 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var15;
+var16 = NEW_array__Array(&type_array__Arraykernel__Object);
+((void (*)(val*))(var16->class->vft[COLOR_array__Array__init]))(var16) /* init on <var16:Array[Object]>*/;
+var_listnode4 = var16;
+var_tkwfornode2 = var_nodearraylist1;
+/* <var_tkwfornode2:nullable Object> isa nullable TKwfor */
+cltype = type_nullable_parser_nodes__TKwfor.color;
+idtype = type_nullable_parser_nodes__TKwfor.id;
+if(var_tkwfornode2 == NULL) {
+var17 = 1;
 } else {
-if(cltype >= var_tidnode3->type->table_size) {
-var7 = 0;
+if(cltype >= var_tkwfornode2->type->table_size) {
+var17 = 0;
 } else {
-var7 = var_tidnode3->type->type_table[cltype] == idtype;
+var17 = var_tkwfornode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var7) {
+if (!var17) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25684);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26202);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist3;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype9 = type_nullable_parser_nodes__AExprs.color;
-idtype10 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var8 = 1;
+var_listnode3 = var_nodearraylist5;
+/* <var_listnode3:nullable Object> isa Array[Object] */
+cltype19 = type_array__Arraykernel__Object.color;
+idtype20 = type_array__Arraykernel__Object.id;
+if(var_listnode3 == NULL) {
+var18 = 0;
 } else {
-if(cltype9 >= var_pexprsnode4->type->table_size) {
-var8 = 0;
+if(cltype19 >= var_listnode3->type->table_size) {
+var18 = 0;
 } else {
-var8 = var_pexprsnode4->type->type_table[cltype9] == idtype10;
+var18 = var_listnode3->type->type_table[cltype19] == idtype20;
 }
 }
-if (!var8) {
+if (!var18) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25686);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26204);
+show_backtrace(1);
 }
-var_passignopnode5 = var_nodearraylist4;
-/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
-cltype12 = type_nullable_parser_nodes__AAssignOp.color;
-idtype13 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode5 == NULL) {
-var11 = 1;
+var21 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction703>*/;
+var_listnode4 = var21;
+var_pexprnode5 = var_nodearraylist11;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype23 = type_nullable_parser_nodes__AExpr.color;
+idtype24 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var22 = 1;
 } else {
-if(cltype12 >= var_passignopnode5->type->table_size) {
-var11 = 0;
+if(cltype23 >= var_pexprnode5->type->table_size) {
+var22 = 0;
 } else {
-var11 = var_passignopnode5->type->type_table[cltype12] == idtype13;
+var22 = var_pexprnode5->type->type_table[cltype23] == idtype24;
 }
 }
-if (!var11) {
+if (!var22) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25688);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26207);
+show_backtrace(1);
 }
-var_pexprnode6 = var_nodearraylist5;
-/* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype15 = type_nullable_parser_nodes__AExpr.color;
-idtype16 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode6 == NULL) {
-var14 = 1;
+var_tkwdonode6 = var_nodearraylist13;
+/* <var_tkwdonode6:nullable Object> isa nullable TKwdo */
+cltype26 = type_nullable_parser_nodes__TKwdo.color;
+idtype27 = type_nullable_parser_nodes__TKwdo.id;
+if(var_tkwdonode6 == NULL) {
+var25 = 1;
 } else {
-if(cltype15 >= var_pexprnode6->type->table_size) {
-var14 = 0;
+if(cltype26 >= var_tkwdonode6->type->table_size) {
+var25 = 0;
 } else {
-var14 = var_pexprnode6->type->type_table[cltype15] == idtype16;
+var25 = var_tkwdonode6->type->type_table[cltype26] == idtype27;
 }
 }
-if (!var14) {
+if (!var25) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25690);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26209);
+show_backtrace(1);
 }
-var17 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var17, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var17:ACallReassignExpr>*/;
-CHECK_NEW_parser_nodes__ACallReassignExpr(var17);
-var_pexprnode1 = var17;
+var_pexprnode7 = var_nodearraylist14;
+/* <var_pexprnode7:nullable Object> isa nullable AExpr */
+cltype29 = type_nullable_parser_nodes__AExpr.color;
+idtype30 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode7 == NULL) {
+var28 = 1;
+} else {
+if(cltype29 >= var_pexprnode7->type->table_size) {
+var28 = 0;
+} else {
+var28 = var_pexprnode7->type->type_table[cltype29] == idtype30;
+}
+}
+if (!var28) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26211);
+show_backtrace(1);
+}
+var_plabelnode8 = var_nodearraylist15;
+/* <var_plabelnode8:nullable Object> isa nullable ALabel */
+cltype32 = type_nullable_parser_nodes__ALabel.color;
+idtype33 = type_nullable_parser_nodes__ALabel.id;
+if(var_plabelnode8 == NULL) {
+var31 = 1;
+} else {
+if(cltype32 >= var_plabelnode8->type->table_size) {
+var31 = 0;
+} else {
+var31 = var_plabelnode8->type->type_table[cltype32] == idtype33;
+}
+}
+if (!var31) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26213);
+show_backtrace(1);
+}
+var34 = NEW_parser_nodes__AForExpr(&type_parser_nodes__AForExpr);
+((void (*)(val*, val*, val*, val*, val*, val*, val*))(var34->class->vft[COLOR_parser_prod__AForExpr__init_aforexpr]))(var34, var_tkwfornode2, var_listnode4, var_pexprnode5, var_tkwdonode6, var_pexprnode7, var_plabelnode8) /* init_aforexpr on <var34:AForExpr>*/;
+var_pexprnode1 = var34;
 var_node_list = var_pexprnode1;
-var18 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction680> */
-var19 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var18) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var19, var_node_list) /* push on <var_p:Parser>*/;
+var35 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction703> */
+var36 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var35) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var36, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction680#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction680__action(val* self, val* p0) {
-parser__ReduceAction680__action(self, p0);
+/* method parser#ReduceAction703#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction703__action(val* self, val* p0) {
+parser__ReduceAction703__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction681#action for (self: ReduceAction681, Parser) */
-void parser__ReduceAction681__action(val* self, val* p0) {
+/* method parser#ReduceAction704#action for (self: ReduceAction704, Parser) */
+void parser__ReduceAction704__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var_nodearraylist11 /* var nodearraylist11: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
 val* var4 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
 val* var5 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var6 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var8 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var9 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var10 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var11 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var7 /* : AImplicitSelfExpr */;
-val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var8 /* : Bool */;
+val* var12 /* : Array[Object] */;
+val* var_listnode4 /* var listnode4: Array[Object] */;
+val* var_tkwfornode2 /* var tkwfornode2: nullable Object */;
+short int var13 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprsnode4 /* var pexprsnode4: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var_passignopnode5 /* var passignopnode5: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
-val* var_pexprnode6 /* var pexprnode6: nullable Object */;
-short int var15 /* : Bool */;
-int cltype16;
-int idtype17;
-val* var18 /* : ACallReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ACallReassignExpr */;
-long var19 /* : Int */;
-long var20 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var1;
+val* var_listnode3 /* var listnode3: nullable Object */;
+short int var14 /* : Bool */;
+int cltype15;
+int idtype16;
+val* var17 /* : Array[Object] */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var18 /* : Bool */;
+int cltype19;
+int idtype20;
+val* var_tkwdonode6 /* var tkwdonode6: nullable Object */;
+short int var21 /* : Bool */;
+int cltype22;
+int idtype23;
+val* var_pexprnode7 /* var pexprnode7: nullable Object */;
+short int var24 /* : Bool */;
+int cltype25;
+int idtype26;
+val* var_plabelnode8 /* var plabelnode8: nullable Object */;
+short int var27 /* : Bool */;
+int cltype28;
+int idtype29;
+val* var30 /* : AForExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AForExpr */;
+long var31 /* : Int */;
+long var32 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist11 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var2;
+var_nodearraylist10 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var3;
+var_nodearraylist9 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var4;
+var_nodearraylist8 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var5;
+var_nodearraylist7 = var5;
 var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var6;
-var7 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
-((void (*)(val*))(var7->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var7) /* init_aimplicitselfexpr on <var7:AImplicitSelfExpr>*/;
-CHECK_NEW_parser_nodes__AImplicitSelfExpr(var7);
-var_pexprnode2 = var7;
-var_tidnode3 = var_nodearraylist3;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype = type_nullable_parser_nodes__TId.color;
-idtype = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var8 = 1;
+var_nodearraylist6 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var8;
+var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var9;
+var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var10;
+var11 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var11;
+var12 = NEW_array__Array(&type_array__Arraykernel__Object);
+((void (*)(val*))(var12->class->vft[COLOR_array__Array__init]))(var12) /* init on <var12:Array[Object]>*/;
+var_listnode4 = var12;
+var_tkwfornode2 = var_nodearraylist1;
+/* <var_tkwfornode2:nullable Object> isa nullable TKwfor */
+cltype = type_nullable_parser_nodes__TKwfor.color;
+idtype = type_nullable_parser_nodes__TKwfor.id;
+if(var_tkwfornode2 == NULL) {
+var13 = 1;
 } else {
-if(cltype >= var_tidnode3->type->table_size) {
-var8 = 0;
+if(cltype >= var_tkwfornode2->type->table_size) {
+var13 = 0;
 } else {
-var8 = var_tidnode3->type->type_table[cltype] == idtype;
+var13 = var_tkwfornode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var8) {
+if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25715);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26244);
+show_backtrace(1);
 }
-var_pexprsnode4 = var_nodearraylist4;
-/* <var_pexprsnode4:nullable Object> isa nullable AExprs */
-cltype10 = type_nullable_parser_nodes__AExprs.color;
-idtype11 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode4 == NULL) {
-var9 = 1;
+var_listnode3 = var_nodearraylist3;
+/* <var_listnode3:nullable Object> isa Array[Object] */
+cltype15 = type_array__Arraykernel__Object.color;
+idtype16 = type_array__Arraykernel__Object.id;
+if(var_listnode3 == NULL) {
+var14 = 0;
 } else {
-if(cltype10 >= var_pexprsnode4->type->table_size) {
-var9 = 0;
+if(cltype15 >= var_listnode3->type->table_size) {
+var14 = 0;
 } else {
-var9 = var_pexprsnode4->type->type_table[cltype10] == idtype11;
+var14 = var_listnode3->type->type_table[cltype15] == idtype16;
 }
 }
-if (!var9) {
+if (!var14) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25717);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26246);
+show_backtrace(1);
 }
-var_passignopnode5 = var_nodearraylist5;
-/* <var_passignopnode5:nullable Object> isa nullable AAssignOp */
-cltype13 = type_nullable_parser_nodes__AAssignOp.color;
-idtype14 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode5 == NULL) {
-var12 = 1;
+var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction704>*/;
+var_listnode4 = var17;
+var_pexprnode5 = var_nodearraylist7;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype19 = type_nullable_parser_nodes__AExpr.color;
+idtype20 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var18 = 1;
 } else {
-if(cltype13 >= var_passignopnode5->type->table_size) {
-var12 = 0;
+if(cltype19 >= var_pexprnode5->type->table_size) {
+var18 = 0;
 } else {
-var12 = var_passignopnode5->type->type_table[cltype13] == idtype14;
+var18 = var_pexprnode5->type->type_table[cltype19] == idtype20;
 }
 }
-if (!var12) {
+if (!var18) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25719);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26249);
+show_backtrace(1);
 }
-var_pexprnode6 = var_nodearraylist6;
-/* <var_pexprnode6:nullable Object> isa nullable AExpr */
-cltype16 = type_nullable_parser_nodes__AExpr.color;
-idtype17 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode6 == NULL) {
-var15 = 1;
+var_tkwdonode6 = var_nodearraylist9;
+/* <var_tkwdonode6:nullable Object> isa nullable TKwdo */
+cltype22 = type_nullable_parser_nodes__TKwdo.color;
+idtype23 = type_nullable_parser_nodes__TKwdo.id;
+if(var_tkwdonode6 == NULL) {
+var21 = 1;
 } else {
-if(cltype16 >= var_pexprnode6->type->table_size) {
-var15 = 0;
+if(cltype22 >= var_tkwdonode6->type->table_size) {
+var21 = 0;
 } else {
-var15 = var_pexprnode6->type->type_table[cltype16] == idtype17;
+var21 = var_tkwdonode6->type->type_table[cltype22] == idtype23;
 }
 }
-if (!var15) {
+if (!var21) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25721);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26251);
+show_backtrace(1);
 }
-var18 = NEW_parser_nodes__ACallReassignExpr(&type_parser_nodes__ACallReassignExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var18->class->vft[COLOR_parser_prod__ACallReassignExpr__init_acallreassignexpr]))(var18, var_pexprnode2, var_tidnode3, var_pexprsnode4, var_passignopnode5, var_pexprnode6) /* init_acallreassignexpr on <var18:ACallReassignExpr>*/;
-CHECK_NEW_parser_nodes__ACallReassignExpr(var18);
-var_pexprnode1 = var18;
+var_pexprnode7 = var_nodearraylist10;
+/* <var_pexprnode7:nullable Object> isa nullable AExpr */
+cltype25 = type_nullable_parser_nodes__AExpr.color;
+idtype26 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode7 == NULL) {
+var24 = 1;
+} else {
+if(cltype25 >= var_pexprnode7->type->table_size) {
+var24 = 0;
+} else {
+var24 = var_pexprnode7->type->type_table[cltype25] == idtype26;
+}
+}
+if (!var24) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26253);
+show_backtrace(1);
+}
+var_plabelnode8 = var_nodearraylist11;
+/* <var_plabelnode8:nullable Object> isa nullable ALabel */
+cltype28 = type_nullable_parser_nodes__ALabel.color;
+idtype29 = type_nullable_parser_nodes__ALabel.id;
+if(var_plabelnode8 == NULL) {
+var27 = 1;
+} else {
+if(cltype28 >= var_plabelnode8->type->table_size) {
+var27 = 0;
+} else {
+var27 = var_plabelnode8->type->type_table[cltype28] == idtype29;
+}
+}
+if (!var27) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26255);
+show_backtrace(1);
+}
+var30 = NEW_parser_nodes__AForExpr(&type_parser_nodes__AForExpr);
+((void (*)(val*, val*, val*, val*, val*, val*, val*))(var30->class->vft[COLOR_parser_prod__AForExpr__init_aforexpr]))(var30, var_tkwfornode2, var_listnode4, var_pexprnode5, var_tkwdonode6, var_pexprnode7, var_plabelnode8) /* init_aforexpr on <var30:AForExpr>*/;
+var_pexprnode1 = var30;
 var_node_list = var_pexprnode1;
-var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction681> */
-var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
+var31 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction704> */
+var32 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var31) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var32, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction681#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction681__action(val* self, val* p0) {
-parser__ReduceAction681__action(self, p0);
+/* method parser#ReduceAction704#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction704__action(val* self, val* p0) {
+parser__ReduceAction704__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction683#action for (self: ReduceAction683, Parser) */
-void parser__ReduceAction683__action(val* self, val* p0) {
+/* method parser#ReduceAction705#action for (self: ReduceAction705, Parser) */
+void parser__ReduceAction705__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist14 /* var nodearraylist14: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist13 /* var nodearraylist13: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist12 /* var nodearraylist12: nullable Object */;
 val* var4 /* : nullable Object */;
+val* var_nodearraylist11 /* var nodearraylist11: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
+val* var8 /* : nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
+val* var9 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var10 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var11 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var12 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var13 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var14 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var5 /* : Bool */;
+val* var15 /* : Array[Object] */;
+val* var_listnode4 /* var listnode4: Array[Object] */;
+val* var_tkwfornode2 /* var tkwfornode2: nullable Object */;
+short int var16 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprsnode3 /* var pexprsnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var_passignopnode4 /* var passignopnode4: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
+val* var_listnode3 /* var listnode3: nullable Object */;
+short int var17 /* : Bool */;
+int cltype18;
+int idtype19;
+val* var20 /* : Array[Object] */;
 val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
-val* var15 /* : ABraReassignExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ABraReassignExpr */;
-long var16 /* : Int */;
-long var17 /* : Int */;
+short int var21 /* : Bool */;
+int cltype22;
+int idtype23;
+val* var_tkwdonode6 /* var tkwdonode6: nullable Object */;
+short int var24 /* : Bool */;
+int cltype25;
+int idtype26;
+val* var_pexprnode7 /* var pexprnode7: nullable Object */;
+short int var27 /* : Bool */;
+int cltype28;
+int idtype29;
+val* var30 /* : AForExpr */;
+val* var31 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AForExpr */;
+long var32 /* : Int */;
+long var33 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist14 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist13 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
+var_nodearraylist12 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var5 = 1;
+var_nodearraylist11 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist10 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist9 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist8 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist7 = var8;
+var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist6 = var9;
+var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var10;
+var11 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var11;
+var12 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var12;
+var13 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var13;
+var14 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var14;
+var15 = NEW_array__Array(&type_array__Arraykernel__Object);
+((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
+var_listnode4 = var15;
+var_tkwfornode2 = var_nodearraylist1;
+/* <var_tkwfornode2:nullable Object> isa nullable TKwfor */
+cltype = type_nullable_parser_nodes__TKwfor.color;
+idtype = type_nullable_parser_nodes__TKwfor.id;
+if(var_tkwfornode2 == NULL) {
+var16 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var5 = 0;
+if(cltype >= var_tkwfornode2->type->table_size) {
+var16 = 0;
 } else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
+var16 = var_tkwfornode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var5) {
+if (!var16) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25743);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26289);
+show_backtrace(1);
 }
-var_pexprsnode3 = var_nodearraylist2;
-/* <var_pexprsnode3:nullable Object> isa nullable AExprs */
-cltype7 = type_nullable_parser_nodes__AExprs.color;
-idtype8 = type_nullable_parser_nodes__AExprs.id;
-if(var_pexprsnode3 == NULL) {
-var6 = 1;
+var_listnode3 = var_nodearraylist5;
+/* <var_listnode3:nullable Object> isa Array[Object] */
+cltype18 = type_array__Arraykernel__Object.color;
+idtype19 = type_array__Arraykernel__Object.id;
+if(var_listnode3 == NULL) {
+var17 = 0;
 } else {
-if(cltype7 >= var_pexprsnode3->type->table_size) {
-var6 = 0;
+if(cltype18 >= var_listnode3->type->table_size) {
+var17 = 0;
 } else {
-var6 = var_pexprsnode3->type->type_table[cltype7] == idtype8;
+var17 = var_listnode3->type->type_table[cltype18] == idtype19;
 }
 }
-if (!var6) {
+if (!var17) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25745);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26291);
+show_backtrace(1);
 }
-var_passignopnode4 = var_nodearraylist3;
-/* <var_passignopnode4:nullable Object> isa nullable AAssignOp */
-cltype10 = type_nullable_parser_nodes__AAssignOp.color;
-idtype11 = type_nullable_parser_nodes__AAssignOp.id;
-if(var_passignopnode4 == NULL) {
-var9 = 1;
+var20 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction705>*/;
+var_listnode4 = var20;
+var_pexprnode5 = var_nodearraylist11;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype22 = type_nullable_parser_nodes__AExpr.color;
+idtype23 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var21 = 1;
 } else {
-if(cltype10 >= var_passignopnode4->type->table_size) {
-var9 = 0;
+if(cltype22 >= var_pexprnode5->type->table_size) {
+var21 = 0;
 } else {
-var9 = var_passignopnode4->type->type_table[cltype10] == idtype11;
+var21 = var_pexprnode5->type->type_table[cltype22] == idtype23;
 }
 }
-if (!var9) {
+if (!var21) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25747);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26294);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist4;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype13 = type_nullable_parser_nodes__AExpr.color;
-idtype14 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var12 = 1;
+var_tkwdonode6 = var_nodearraylist13;
+/* <var_tkwdonode6:nullable Object> isa nullable TKwdo */
+cltype25 = type_nullable_parser_nodes__TKwdo.color;
+idtype26 = type_nullable_parser_nodes__TKwdo.id;
+if(var_tkwdonode6 == NULL) {
+var24 = 1;
 } else {
-if(cltype13 >= var_pexprnode5->type->table_size) {
-var12 = 0;
+if(cltype25 >= var_tkwdonode6->type->table_size) {
+var24 = 0;
 } else {
-var12 = var_pexprnode5->type->type_table[cltype13] == idtype14;
+var24 = var_tkwdonode6->type->type_table[cltype25] == idtype26;
 }
 }
-if (!var12) {
+if (!var24) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25749);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26296);
+show_backtrace(1);
 }
-var15 = NEW_parser_nodes__ABraReassignExpr(&type_parser_nodes__ABraReassignExpr);
-((void (*)(val*, val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__ABraReassignExpr__init_abrareassignexpr]))(var15, var_pexprnode2, var_pexprsnode3, var_passignopnode4, var_pexprnode5) /* init_abrareassignexpr on <var15:ABraReassignExpr>*/;
-CHECK_NEW_parser_nodes__ABraReassignExpr(var15);
-var_pexprnode1 = var15;
+var_pexprnode7 = var_nodearraylist14;
+/* <var_pexprnode7:nullable Object> isa nullable AExpr */
+cltype28 = type_nullable_parser_nodes__AExpr.color;
+idtype29 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode7 == NULL) {
+var27 = 1;
+} else {
+if(cltype28 >= var_pexprnode7->type->table_size) {
+var27 = 0;
+} else {
+var27 = var_pexprnode7->type->type_table[cltype28] == idtype29;
+}
+}
+if (!var27) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26298);
+show_backtrace(1);
+}
+var30 = NEW_parser_nodes__AForExpr(&type_parser_nodes__AForExpr);
+var31 = NULL;
+((void (*)(val*, val*, val*, val*, val*, val*, val*))(var30->class->vft[COLOR_parser_prod__AForExpr__init_aforexpr]))(var30, var_tkwfornode2, var_listnode4, var_pexprnode5, var_tkwdonode6, var_pexprnode7, var31) /* init_aforexpr on <var30:AForExpr>*/;
+var_pexprnode1 = var30;
 var_node_list = var_pexprnode1;
-var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction683> */
-var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
+var32 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction705> */
+var33 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var32) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var33, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction683#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction683__action(val* self, val* p0) {
-parser__ReduceAction683__action(self, p0);
+/* method parser#ReduceAction705#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction705__action(val* self, val* p0) {
+parser__ReduceAction705__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction684#action for (self: ReduceAction684, Parser) */
-void parser__ReduceAction684__action(val* self, val* p0) {
+/* method parser#ReduceAction706#action for (self: ReduceAction706, Parser) */
+void parser__ReduceAction706__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
+val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var7 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var8 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var9 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var10 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tpluseqnode2 /* var tpluseqnode2: nullable Object */;
-short int var2 /* : Bool */;
+val* var11 /* : Array[Object] */;
+val* var_listnode4 /* var listnode4: Array[Object] */;
+val* var_tkwfornode2 /* var tkwfornode2: nullable Object */;
+short int var12 /* : Bool */;
 int cltype;
 int idtype;
-val* var3 /* : APlusAssignOp */;
-val* var_passignopnode1 /* var passignopnode1: nullable APlusAssignOp */;
-long var4 /* : Int */;
-long var5 /* : Int */;
+val* var_listnode3 /* var listnode3: nullable Object */;
+short int var13 /* : Bool */;
+int cltype14;
+int idtype15;
+val* var16 /* : Array[Object] */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var17 /* : Bool */;
+int cltype18;
+int idtype19;
+val* var_tkwdonode6 /* var tkwdonode6: nullable Object */;
+short int var20 /* : Bool */;
+int cltype21;
+int idtype22;
+val* var_pexprnode7 /* var pexprnode7: nullable Object */;
+short int var23 /* : Bool */;
+int cltype24;
+int idtype25;
+val* var26 /* : AForExpr */;
+val* var27 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AForExpr */;
+long var28 /* : Int */;
+long var29 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var1;
-var_tpluseqnode2 = var_nodearraylist1;
-/* <var_tpluseqnode2:nullable Object> isa nullable TPluseq */
-cltype = type_nullable_parser_nodes__TPluseq.color;
-idtype = type_nullable_parser_nodes__TPluseq.id;
-if(var_tpluseqnode2 == NULL) {
-var2 = 1;
+var_nodearraylist10 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist9 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist8 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist7 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist6 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist5 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var7;
+var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var8;
+var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var9;
+var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var10;
+var11 = NEW_array__Array(&type_array__Arraykernel__Object);
+((void (*)(val*))(var11->class->vft[COLOR_array__Array__init]))(var11) /* init on <var11:Array[Object]>*/;
+var_listnode4 = var11;
+var_tkwfornode2 = var_nodearraylist1;
+/* <var_tkwfornode2:nullable Object> isa nullable TKwfor */
+cltype = type_nullable_parser_nodes__TKwfor.color;
+idtype = type_nullable_parser_nodes__TKwfor.id;
+if(var_tkwfornode2 == NULL) {
+var12 = 1;
 } else {
-if(cltype >= var_tpluseqnode2->type->table_size) {
-var2 = 0;
+if(cltype >= var_tkwfornode2->type->table_size) {
+var12 = 0;
 } else {
-var2 = var_tpluseqnode2->type->type_table[cltype] == idtype;
+var12 = var_tkwfornode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var2) {
+if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25767);
-exit(1);
-}
-var3 = NEW_parser_nodes__APlusAssignOp(&type_parser_nodes__APlusAssignOp);
-((void (*)(val*, val*))(var3->class->vft[COLOR_parser_prod__APlusAssignOp__init_aplusassignop]))(var3, var_tpluseqnode2) /* init_aplusassignop on <var3:APlusAssignOp>*/;
-CHECK_NEW_parser_nodes__APlusAssignOp(var3);
-var_passignopnode1 = var3;
-var_node_list = var_passignopnode1;
-var4 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction684> */
-var5 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var4) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var5, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction684#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction684__action(val* self, val* p0) {
-parser__ReduceAction684__action(self, p0);
-RET_LABEL:;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26328);
+show_backtrace(1);
 }
-/* method parser#ReduceAction685#action for (self: ReduceAction685, Parser) */
-void parser__ReduceAction685__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tminuseqnode2 /* var tminuseqnode2: nullable Object */;
-short int var2 /* : Bool */;
-int cltype;
-int idtype;
-val* var3 /* : AMinusAssignOp */;
-val* var_passignopnode1 /* var passignopnode1: nullable AMinusAssignOp */;
-long var4 /* : Int */;
-long var5 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var1;
-var_tminuseqnode2 = var_nodearraylist1;
-/* <var_tminuseqnode2:nullable Object> isa nullable TMinuseq */
-cltype = type_nullable_parser_nodes__TMinuseq.color;
-idtype = type_nullable_parser_nodes__TMinuseq.id;
-if(var_tminuseqnode2 == NULL) {
-var2 = 1;
+var_listnode3 = var_nodearraylist3;
+/* <var_listnode3:nullable Object> isa Array[Object] */
+cltype14 = type_array__Arraykernel__Object.color;
+idtype15 = type_array__Arraykernel__Object.id;
+if(var_listnode3 == NULL) {
+var13 = 0;
 } else {
-if(cltype >= var_tminuseqnode2->type->table_size) {
-var2 = 0;
+if(cltype14 >= var_listnode3->type->table_size) {
+var13 = 0;
 } else {
-var2 = var_tminuseqnode2->type->type_table[cltype] == idtype;
+var13 = var_listnode3->type->type_table[cltype14] == idtype15;
 }
 }
-if (!var2) {
+if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25782);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26330);
+show_backtrace(1);
 }
-var3 = NEW_parser_nodes__AMinusAssignOp(&type_parser_nodes__AMinusAssignOp);
-((void (*)(val*, val*))(var3->class->vft[COLOR_parser_prod__AMinusAssignOp__init_aminusassignop]))(var3, var_tminuseqnode2) /* init_aminusassignop on <var3:AMinusAssignOp>*/;
-CHECK_NEW_parser_nodes__AMinusAssignOp(var3);
-var_passignopnode1 = var3;
-var_node_list = var_passignopnode1;
-var4 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction685> */
-var5 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var4) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var5, var_node_list) /* push on <var_p:Parser>*/;
+var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction706>*/;
+var_listnode4 = var16;
+var_pexprnode5 = var_nodearraylist7;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype18 = type_nullable_parser_nodes__AExpr.color;
+idtype19 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var17 = 1;
+} else {
+if(cltype18 >= var_pexprnode5->type->table_size) {
+var17 = 0;
+} else {
+var17 = var_pexprnode5->type->type_table[cltype18] == idtype19;
+}
+}
+if (!var17) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26333);
+show_backtrace(1);
+}
+var_tkwdonode6 = var_nodearraylist9;
+/* <var_tkwdonode6:nullable Object> isa nullable TKwdo */
+cltype21 = type_nullable_parser_nodes__TKwdo.color;
+idtype22 = type_nullable_parser_nodes__TKwdo.id;
+if(var_tkwdonode6 == NULL) {
+var20 = 1;
+} else {
+if(cltype21 >= var_tkwdonode6->type->table_size) {
+var20 = 0;
+} else {
+var20 = var_tkwdonode6->type->type_table[cltype21] == idtype22;
+}
+}
+if (!var20) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26335);
+show_backtrace(1);
+}
+var_pexprnode7 = var_nodearraylist10;
+/* <var_pexprnode7:nullable Object> isa nullable AExpr */
+cltype24 = type_nullable_parser_nodes__AExpr.color;
+idtype25 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode7 == NULL) {
+var23 = 1;
+} else {
+if(cltype24 >= var_pexprnode7->type->table_size) {
+var23 = 0;
+} else {
+var23 = var_pexprnode7->type->type_table[cltype24] == idtype25;
+}
+}
+if (!var23) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26337);
+show_backtrace(1);
+}
+var26 = NEW_parser_nodes__AForExpr(&type_parser_nodes__AForExpr);
+var27 = NULL;
+((void (*)(val*, val*, val*, val*, val*, val*, val*))(var26->class->vft[COLOR_parser_prod__AForExpr__init_aforexpr]))(var26, var_tkwfornode2, var_listnode4, var_pexprnode5, var_tkwdonode6, var_pexprnode7, var27) /* init_aforexpr on <var26:AForExpr>*/;
+var_pexprnode1 = var26;
+var_node_list = var_pexprnode1;
+var28 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction706> */
+var29 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var28) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var29, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction685#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction685__action(val* self, val* p0) {
-parser__ReduceAction685__action(self, p0);
+/* method parser#ReduceAction706#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction706__action(val* self, val* p0) {
+parser__ReduceAction706__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction686#action for (self: ReduceAction686, Parser) */
-void parser__ReduceAction686__action(val* self, val* p0) {
+/* method parser#ReduceAction707#action for (self: ReduceAction707, Parser) */
+void parser__ReduceAction707__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
 val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwdonode2 /* var tkwdonode2: nullable Object */;
-short int var4 /* : Bool */;
+val* var_tkwassertnode2 /* var tkwassertnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var5 /* : Bool */;
-int cltype6;
-int idtype7;
-val* var_plabelnode4 /* var plabelnode4: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var11 /* : ADoExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ADoExpr */;
-long var12 /* : Int */;
-long var13 /* : Int */;
+val* var_pexprnode4 /* var pexprnode4: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var12 /* : AAssertExpr */;
+val* var13 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAssertExpr */;
+long var14 /* : Int */;
+long var15 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var_tkwdonode2 = var_nodearraylist1;
-/* <var_tkwdonode2:nullable Object> isa nullable TKwdo */
-cltype = type_nullable_parser_nodes__TKwdo.color;
-idtype = type_nullable_parser_nodes__TKwdo.id;
-if(var_tkwdonode2 == NULL) {
-var4 = 1;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_tkwassertnode2 = var_nodearraylist1;
+/* <var_tkwassertnode2:nullable Object> isa nullable TKwassert */
+cltype = type_nullable_parser_nodes__TKwassert.color;
+idtype = type_nullable_parser_nodes__TKwassert.id;
+if(var_tkwassertnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwdonode2->type->table_size) {
-var4 = 0;
+if(cltype >= var_tkwassertnode2->type->table_size) {
+var5 = 0;
 } else {
-var4 = var_tkwdonode2->type->type_table[cltype] == idtype;
+var5 = var_tkwassertnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var4) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25799);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26360);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist2;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype6 = type_nullable_parser_nodes__AExpr.color;
-idtype7 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var5 = 1;
+var_pexprnode4 = var_nodearraylist2;
+/* <var_pexprnode4:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode4 == NULL) {
+var6 = 1;
 } else {
-if(cltype6 >= var_pexprnode3->type->table_size) {
-var5 = 0;
+if(cltype7 >= var_pexprnode4->type->table_size) {
+var6 = 0;
 } else {
-var5 = var_pexprnode3->type->type_table[cltype6] == idtype7;
+var6 = var_pexprnode4->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var5) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25801);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26362);
+show_backtrace(1);
 }
-var_plabelnode4 = var_nodearraylist3;
-/* <var_plabelnode4:nullable Object> isa nullable ALabel */
-cltype9 = type_nullable_parser_nodes__ALabel.color;
-idtype10 = type_nullable_parser_nodes__ALabel.id;
-if(var_plabelnode4 == NULL) {
-var8 = 1;
+var_pexprnode5 = var_nodearraylist4;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
+cltype10 = type_nullable_parser_nodes__AExpr.color;
+idtype11 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode5 == NULL) {
+var9 = 1;
 } else {
-if(cltype9 >= var_plabelnode4->type->table_size) {
-var8 = 0;
+if(cltype10 >= var_pexprnode5->type->table_size) {
+var9 = 0;
 } else {
-var8 = var_plabelnode4->type->type_table[cltype9] == idtype10;
+var9 = var_pexprnode5->type->type_table[cltype10] == idtype11;
 }
 }
-if (!var8) {
+if (!var9) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25803);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26364);
+show_backtrace(1);
 }
-var11 = NEW_parser_nodes__ADoExpr(&type_parser_nodes__ADoExpr);
-((void (*)(val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__ADoExpr__init_adoexpr]))(var11, var_tkwdonode2, var_pexprnode3, var_plabelnode4) /* init_adoexpr on <var11:ADoExpr>*/;
-CHECK_NEW_parser_nodes__ADoExpr(var11);
-var_pexprnode1 = var11;
+var12 = NEW_parser_nodes__AAssertExpr(&type_parser_nodes__AAssertExpr);
+var13 = NULL;
+((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AAssertExpr__init_aassertexpr]))(var12, var_tkwassertnode2, var13, var_pexprnode4, var_pexprnode5) /* init_aassertexpr on <var12:AAssertExpr>*/;
+var_pexprnode1 = var12;
 var_node_list = var_pexprnode1;
-var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction686> */
-var13 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var12) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var13, var_node_list) /* push on <var_p:Parser>*/;
+var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction707> */
+var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction686#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction686__action(val* self, val* p0) {
-parser__ReduceAction686__action(self, p0);
+/* method parser#ReduceAction707#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction707__action(val* self, val* p0) {
+parser__ReduceAction707__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction687#action for (self: ReduceAction687, Parser) */
-void parser__ReduceAction687__action(val* self, val* p0) {
+/* method parser#ReduceAction708#action for (self: ReduceAction708, Parser) */
+void parser__ReduceAction708__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var2 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var5 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwdonode2 /* var tkwdonode2: nullable Object */;
-short int var3 /* : Bool */;
+val* var_tkwassertnode2 /* var tkwassertnode2: nullable Object */;
+short int var6 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var4 /* : Bool */;
-int cltype5;
-int idtype6;
-val* var7 /* : ADoExpr */;
-val* var8 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable ADoExpr */;
-long var9 /* : Int */;
-long var10 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var2;
-var_tkwdonode2 = var_nodearraylist1;
-/* <var_tkwdonode2:nullable Object> isa nullable TKwdo */
-cltype = type_nullable_parser_nodes__TKwdo.color;
-idtype = type_nullable_parser_nodes__TKwdo.id;
-if(var_tkwdonode2 == NULL) {
-var3 = 1;
-} else {
-if(cltype >= var_tkwdonode2->type->table_size) {
-var3 = 0;
-} else {
-var3 = var_tkwdonode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var3) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25821);
-exit(1);
-}
-var_pexprnode3 = var_nodearraylist2;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype5 = type_nullable_parser_nodes__AExpr.color;
-idtype6 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var4 = 1;
-} else {
-if(cltype5 >= var_pexprnode3->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_pexprnode3->type->type_table[cltype5] == idtype6;
-}
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25823);
-exit(1);
-}
-var7 = NEW_parser_nodes__ADoExpr(&type_parser_nodes__ADoExpr);
-var8 = NULL;
-((void (*)(val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__ADoExpr__init_adoexpr]))(var7, var_tkwdonode2, var_pexprnode3, var8) /* init_adoexpr on <var7:ADoExpr>*/;
-CHECK_NEW_parser_nodes__ADoExpr(var7);
-var_pexprnode1 = var7;
-var_node_list = var_pexprnode1;
-var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction687> */
-var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction687#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction687__action(val* self, val* p0) {
-parser__ReduceAction687__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction688#action for (self: ReduceAction688, Parser) */
-void parser__ReduceAction688__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var6 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var7 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var8 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
-short int var9 /* : Bool */;
-int cltype;
-int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+val* var_tidnode3 /* var tidnode3: nullable Object */;
+short int var7 /* : Bool */;
+int cltype8;
+int idtype9;
+val* var_pexprnode4 /* var pexprnode4: nullable Object */;
 short int var10 /* : Bool */;
 int cltype11;
 int idtype12;
-val* var_pexprnode4 /* var pexprnode4: nullable Object */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
 short int var13 /* : Bool */;
 int cltype14;
 int idtype15;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var19 /* : AIfExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
-long var20 /* : Int */;
-long var21 /* : Int */;
+val* var16 /* : AAssertExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAssertExpr */;
+long var17 /* : Int */;
+long var18 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var1;
+var_nodearraylist5 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var2;
+var_nodearraylist4 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var3;
+var_nodearraylist3 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var4;
+var_nodearraylist2 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var8;
-var_tkwifnode2 = var_nodearraylist1;
-/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
-cltype = type_nullable_parser_nodes__TKwif.color;
-idtype = type_nullable_parser_nodes__TKwif.id;
-if(var_tkwifnode2 == NULL) {
-var9 = 1;
+var_nodearraylist1 = var5;
+var_tkwassertnode2 = var_nodearraylist1;
+/* <var_tkwassertnode2:nullable Object> isa nullable TKwassert */
+cltype = type_nullable_parser_nodes__TKwassert.color;
+idtype = type_nullable_parser_nodes__TKwassert.id;
+if(var_tkwassertnode2 == NULL) {
+var6 = 1;
 } else {
-if(cltype >= var_tkwifnode2->type->table_size) {
-var9 = 0;
+if(cltype >= var_tkwassertnode2->type->table_size) {
+var6 = 0;
 } else {
-var9 = var_tkwifnode2->type->type_table[cltype] == idtype;
+var6 = var_tkwassertnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var9) {
+if (!var6) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26386);
+show_backtrace(1);
+}
+var_tidnode3 = var_nodearraylist2;
+/* <var_tidnode3:nullable Object> isa nullable TId */
+cltype8 = type_nullable_parser_nodes__TId.color;
+idtype9 = type_nullable_parser_nodes__TId.id;
+if(var_tidnode3 == NULL) {
+var7 = 1;
+} else {
+if(cltype8 >= var_tidnode3->type->table_size) {
+var7 = 0;
+} else {
+var7 = var_tidnode3->type->type_table[cltype8] == idtype9;
+}
+}
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25847);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26388);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist3;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+var_pexprnode4 = var_nodearraylist3;
+/* <var_pexprnode4:nullable Object> isa nullable AExpr */
 cltype11 = type_nullable_parser_nodes__AExpr.color;
 idtype12 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
+if(var_pexprnode4 == NULL) {
 var10 = 1;
 } else {
-if(cltype11 >= var_pexprnode3->type->table_size) {
+if(cltype11 >= var_pexprnode4->type->table_size) {
 var10 = 0;
 } else {
-var10 = var_pexprnode3->type->type_table[cltype11] == idtype12;
+var10 = var_pexprnode4->type->type_table[cltype11] == idtype12;
 }
 }
 if (!var10) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25849);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26390);
+show_backtrace(1);
 }
-var_pexprnode4 = var_nodearraylist6;
-/* <var_pexprnode4:nullable Object> isa nullable AExpr */
+var_pexprnode5 = var_nodearraylist5;
+/* <var_pexprnode5:nullable Object> isa nullable AExpr */
 cltype14 = type_nullable_parser_nodes__AExpr.color;
 idtype15 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode4 == NULL) {
+if(var_pexprnode5 == NULL) {
 var13 = 1;
 } else {
-if(cltype14 >= var_pexprnode4->type->table_size) {
+if(cltype14 >= var_pexprnode5->type->table_size) {
 var13 = 0;
 } else {
-var13 = var_pexprnode4->type->type_table[cltype14] == idtype15;
+var13 = var_pexprnode5->type->type_table[cltype14] == idtype15;
 }
 }
 if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25851);
-exit(1);
-}
-var_pexprnode5 = var_nodearraylist8;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype17 = type_nullable_parser_nodes__AExpr.color;
-idtype18 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var16 = 1;
-} else {
-if(cltype17 >= var_pexprnode5->type->table_size) {
-var16 = 0;
-} else {
-var16 = var_pexprnode5->type->type_table[cltype17] == idtype18;
-}
-}
-if (!var16) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25853);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26392);
+show_backtrace(1);
 }
-var19 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
-((void (*)(val*, val*, val*, val*, val*))(var19->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var19, var_tkwifnode2, var_pexprnode3, var_pexprnode4, var_pexprnode5) /* init_aifexpr on <var19:AIfExpr>*/;
-CHECK_NEW_parser_nodes__AIfExpr(var19);
-var_pexprnode1 = var19;
+var16 = NEW_parser_nodes__AAssertExpr(&type_parser_nodes__AAssertExpr);
+((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AAssertExpr__init_aassertexpr]))(var16, var_tkwassertnode2, var_tidnode3, var_pexprnode4, var_pexprnode5) /* init_aassertexpr on <var16:AAssertExpr>*/;
+var_pexprnode1 = var16;
 var_node_list = var_pexprnode1;
-var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction688> */
-var21 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var20) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var21, var_node_list) /* push on <var_p:Parser>*/;
+var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction708> */
+var18 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var17) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var18, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction688#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction688__action(val* self, val* p0) {
-parser__ReduceAction688__action(self, p0);
+/* method parser#ReduceAction708#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction708__action(val* self, val* p0) {
+parser__ReduceAction708__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction689#action for (self: ReduceAction689, Parser) */
-void parser__ReduceAction689__action(val* self, val* p0) {
+/* method parser#ReduceAction709#action for (self: ReduceAction709, Parser) */
+void parser__ReduceAction709__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var5 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
-short int var7 /* : Bool */;
+val* var_tkwassertnode2 /* var tkwassertnode2: nullable Object */;
+short int var3 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
 val* var_pexprnode4 /* var pexprnode4: nullable Object */;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
-val* var14 /* : AIfExpr */;
-val* var15 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
-long var16 /* : Int */;
-long var17 /* : Int */;
+short int var4 /* : Bool */;
+int cltype5;
+int idtype6;
+val* var7 /* : AAssertExpr */;
+val* var8 /* : null */;
+val* var9 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAssertExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var1;
+var_nodearraylist2 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var6;
-var_tkwifnode2 = var_nodearraylist1;
-/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
-cltype = type_nullable_parser_nodes__TKwif.color;
-idtype = type_nullable_parser_nodes__TKwif.id;
-if(var_tkwifnode2 == NULL) {
-var7 = 1;
+var_nodearraylist1 = var2;
+var_tkwassertnode2 = var_nodearraylist1;
+/* <var_tkwassertnode2:nullable Object> isa nullable TKwassert */
+cltype = type_nullable_parser_nodes__TKwassert.color;
+idtype = type_nullable_parser_nodes__TKwassert.id;
+if(var_tkwassertnode2 == NULL) {
+var3 = 1;
 } else {
-if(cltype >= var_tkwifnode2->type->table_size) {
-var7 = 0;
+if(cltype >= var_tkwassertnode2->type->table_size) {
+var3 = 0;
 } else {
-var7 = var_tkwifnode2->type->type_table[cltype] == idtype;
+var3 = var_tkwassertnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var7) {
+if (!var3) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25876);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26411);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist3;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype9 = type_nullable_parser_nodes__AExpr.color;
-idtype10 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var8 = 1;
+var_pexprnode4 = var_nodearraylist2;
+/* <var_pexprnode4:nullable Object> isa nullable AExpr */
+cltype5 = type_nullable_parser_nodes__AExpr.color;
+idtype6 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode4 == NULL) {
+var4 = 1;
 } else {
-if(cltype9 >= var_pexprnode3->type->table_size) {
-var8 = 0;
+if(cltype5 >= var_pexprnode4->type->table_size) {
+var4 = 0;
 } else {
-var8 = var_pexprnode3->type->type_table[cltype9] == idtype10;
+var4 = var_pexprnode4->type->type_table[cltype5] == idtype6;
 }
 }
-if (!var8) {
+if (!var4) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25878);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26413);
+show_backtrace(1);
 }
-var_pexprnode4 = var_nodearraylist6;
+var7 = NEW_parser_nodes__AAssertExpr(&type_parser_nodes__AAssertExpr);
+var8 = NULL;
+var9 = NULL;
+((void (*)(val*, val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AAssertExpr__init_aassertexpr]))(var7, var_tkwassertnode2, var8, var_pexprnode4, var9) /* init_aassertexpr on <var7:AAssertExpr>*/;
+var_pexprnode1 = var7;
+var_node_list = var_pexprnode1;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction709> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction709#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction709__action(val* self, val* p0) {
+parser__ReduceAction709__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction710#action for (self: ReduceAction710, Parser) */
+void parser__ReduceAction710__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tkwassertnode2 /* var tkwassertnode2: nullable Object */;
+short int var4 /* : Bool */;
+int cltype;
+int idtype;
+val* var_tidnode3 /* var tidnode3: nullable Object */;
+short int var5 /* : Bool */;
+int cltype6;
+int idtype7;
+val* var_pexprnode4 /* var pexprnode4: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var11 /* : AAssertExpr */;
+val* var12 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAssertExpr */;
+long var13 /* : Int */;
+long var14 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var3;
+var_tkwassertnode2 = var_nodearraylist1;
+/* <var_tkwassertnode2:nullable Object> isa nullable TKwassert */
+cltype = type_nullable_parser_nodes__TKwassert.color;
+idtype = type_nullable_parser_nodes__TKwassert.id;
+if(var_tkwassertnode2 == NULL) {
+var4 = 1;
+} else {
+if(cltype >= var_tkwassertnode2->type->table_size) {
+var4 = 0;
+} else {
+var4 = var_tkwassertnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var4) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26433);
+show_backtrace(1);
+}
+var_tidnode3 = var_nodearraylist2;
+/* <var_tidnode3:nullable Object> isa nullable TId */
+cltype6 = type_nullable_parser_nodes__TId.color;
+idtype7 = type_nullable_parser_nodes__TId.id;
+if(var_tidnode3 == NULL) {
+var5 = 1;
+} else {
+if(cltype6 >= var_tidnode3->type->table_size) {
+var5 = 0;
+} else {
+var5 = var_tidnode3->type->type_table[cltype6] == idtype7;
+}
+}
+if (!var5) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26435);
+show_backtrace(1);
+}
+var_pexprnode4 = var_nodearraylist3;
 /* <var_pexprnode4:nullable Object> isa nullable AExpr */
-cltype12 = type_nullable_parser_nodes__AExpr.color;
-idtype13 = type_nullable_parser_nodes__AExpr.id;
+cltype9 = type_nullable_parser_nodes__AExpr.color;
+idtype10 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode4 == NULL) {
-var11 = 1;
+var8 = 1;
 } else {
-if(cltype12 >= var_pexprnode4->type->table_size) {
-var11 = 0;
+if(cltype9 >= var_pexprnode4->type->table_size) {
+var8 = 0;
 } else {
-var11 = var_pexprnode4->type->type_table[cltype12] == idtype13;
+var8 = var_pexprnode4->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var11) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25880);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26437);
+show_backtrace(1);
 }
-var14 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
-var15 = NULL;
-((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var14, var_tkwifnode2, var_pexprnode3, var_pexprnode4, var15) /* init_aifexpr on <var14:AIfExpr>*/;
-CHECK_NEW_parser_nodes__AIfExpr(var14);
-var_pexprnode1 = var14;
+var11 = NEW_parser_nodes__AAssertExpr(&type_parser_nodes__AAssertExpr);
+var12 = NULL;
+((void (*)(val*, val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AAssertExpr__init_aassertexpr]))(var11, var_tkwassertnode2, var_tidnode3, var_pexprnode4, var12) /* init_aassertexpr on <var11:AAssertExpr>*/;
+var_pexprnode1 = var11;
 var_node_list = var_pexprnode1;
-var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction689> */
-var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
+var13 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction710> */
+var14 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var13) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var14, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction689#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction689__action(val* self, val* p0) {
-parser__ReduceAction689__action(self, p0);
+/* method parser#ReduceAction710#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction710__action(val* self, val* p0) {
+parser__ReduceAction710__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction690#action for (self: ReduceAction690, Parser) */
-void parser__ReduceAction690__action(val* self, val* p0) {
+/* method parser#ReduceAction711#action for (self: ReduceAction711, Parser) */
+void parser__ReduceAction711__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tidnode1 /* var tidnode1: nullable Object */;
+long var3 /* : Int */;
+long var4 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var2;
+var_tidnode1 = var_nodearraylist1;
+var_node_list = var_tidnode1;
+var3 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction711> */
+var4 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var3) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var4, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction711#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction711__action(val* self, val* p0) {
+parser__ReduceAction711__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction714#action for (self: ReduceAction714, Parser) */
+void parser__ReduceAction714__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist11 /* var nodearraylist11: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
 val* var4 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
 val* var5 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var6 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var7 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var8 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var9 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var10 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var11 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
 val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
-short int var9 /* : Bool */;
+short int var12 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var_pexprnode4 /* var pexprnode4: nullable Object */;
 short int var13 /* : Bool */;
 int cltype14;
 int idtype15;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+val* var_tkwthennode4 /* var tkwthennode4: nullable Object */;
 short int var16 /* : Bool */;
 int cltype17;
 int idtype18;
-val* var19 /* : AIfExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
-long var20 /* : Int */;
-long var21 /* : Int */;
+val* var_pexprnode5 /* var pexprnode5: nullable Object */;
+short int var19 /* : Bool */;
+int cltype20;
+int idtype21;
+val* var_tkwelsenode6 /* var tkwelsenode6: nullable Object */;
+short int var22 /* : Bool */;
+int cltype23;
+int idtype24;
+val* var_pexprnode7 /* var pexprnode7: nullable Object */;
+short int var25 /* : Bool */;
+int cltype26;
+int idtype27;
+val* var28 /* : AIfexprExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIfexprExpr */;
+long var29 /* : Int */;
+long var30 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var1;
+var_nodearraylist11 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var2;
+var_nodearraylist10 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var3;
+var_nodearraylist9 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var4;
+var_nodearraylist8 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var5;
+var_nodearraylist7 = var5;
 var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var6;
+var_nodearraylist6 = var6;
 var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var7;
+var_nodearraylist5 = var7;
 var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var8;
+var_nodearraylist4 = var8;
+var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var9;
+var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var10;
+var11 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var11;
 var_tkwifnode2 = var_nodearraylist1;
 /* <var_tkwifnode2:nullable Object> isa nullable TKwif */
 cltype = type_nullable_parser_nodes__TKwif.color;
 idtype = type_nullable_parser_nodes__TKwif.id;
 if(var_tkwifnode2 == NULL) {
-var9 = 1;
+var12 = 1;
 } else {
 if(cltype >= var_tkwifnode2->type->table_size) {
-var9 = 0;
+var12 = 0;
 } else {
-var9 = var_tkwifnode2->type->type_table[cltype] == idtype;
+var12 = var_tkwifnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var9) {
+if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25905);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26477);
+show_backtrace(1);
 }
 var_pexprnode3 = var_nodearraylist3;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype11 = type_nullable_parser_nodes__AExpr.color;
-idtype12 = type_nullable_parser_nodes__AExpr.id;
+cltype14 = type_nullable_parser_nodes__AExpr.color;
+idtype15 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var10 = 1;
+var13 = 1;
 } else {
-if(cltype11 >= var_pexprnode3->type->table_size) {
-var10 = 0;
+if(cltype14 >= var_pexprnode3->type->table_size) {
+var13 = 0;
 } else {
-var10 = var_pexprnode3->type->type_table[cltype11] == idtype12;
+var13 = var_pexprnode3->type->type_table[cltype14] == idtype15;
 }
 }
-if (!var10) {
+if (!var13) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25907);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26479);
+show_backtrace(1);
 }
-var_pexprnode4 = var_nodearraylist7;
-/* <var_pexprnode4:nullable Object> isa nullable AExpr */
-cltype14 = type_nullable_parser_nodes__AExpr.color;
-idtype15 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode4 == NULL) {
-var13 = 1;
+var_tkwthennode4 = var_nodearraylist5;
+/* <var_tkwthennode4:nullable Object> isa nullable TKwthen */
+cltype17 = type_nullable_parser_nodes__TKwthen.color;
+idtype18 = type_nullable_parser_nodes__TKwthen.id;
+if(var_tkwthennode4 == NULL) {
+var16 = 1;
 } else {
-if(cltype14 >= var_pexprnode4->type->table_size) {
-var13 = 0;
+if(cltype17 >= var_tkwthennode4->type->table_size) {
+var16 = 0;
 } else {
-var13 = var_pexprnode4->type->type_table[cltype14] == idtype15;
+var16 = var_tkwthennode4->type->type_table[cltype17] == idtype18;
 }
 }
-if (!var13) {
+if (!var16) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25909);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26481);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist8;
+var_pexprnode5 = var_nodearraylist7;
 /* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype17 = type_nullable_parser_nodes__AExpr.color;
-idtype18 = type_nullable_parser_nodes__AExpr.id;
+cltype20 = type_nullable_parser_nodes__AExpr.color;
+idtype21 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode5 == NULL) {
-var16 = 1;
+var19 = 1;
 } else {
-if(cltype17 >= var_pexprnode5->type->table_size) {
-var16 = 0;
+if(cltype20 >= var_pexprnode5->type->table_size) {
+var19 = 0;
 } else {
-var16 = var_pexprnode5->type->type_table[cltype17] == idtype18;
+var19 = var_pexprnode5->type->type_table[cltype20] == idtype21;
 }
 }
-if (!var16) {
+if (!var19) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25911);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26483);
+show_backtrace(1);
 }
-var19 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
-((void (*)(val*, val*, val*, val*, val*))(var19->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var19, var_tkwifnode2, var_pexprnode3, var_pexprnode4, var_pexprnode5) /* init_aifexpr on <var19:AIfExpr>*/;
-CHECK_NEW_parser_nodes__AIfExpr(var19);
-var_pexprnode1 = var19;
+var_tkwelsenode6 = var_nodearraylist9;
+/* <var_tkwelsenode6:nullable Object> isa nullable TKwelse */
+cltype23 = type_nullable_parser_nodes__TKwelse.color;
+idtype24 = type_nullable_parser_nodes__TKwelse.id;
+if(var_tkwelsenode6 == NULL) {
+var22 = 1;
+} else {
+if(cltype23 >= var_tkwelsenode6->type->table_size) {
+var22 = 0;
+} else {
+var22 = var_tkwelsenode6->type->type_table[cltype23] == idtype24;
+}
+}
+if (!var22) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26485);
+show_backtrace(1);
+}
+var_pexprnode7 = var_nodearraylist11;
+/* <var_pexprnode7:nullable Object> isa nullable AExpr */
+cltype26 = type_nullable_parser_nodes__AExpr.color;
+idtype27 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode7 == NULL) {
+var25 = 1;
+} else {
+if(cltype26 >= var_pexprnode7->type->table_size) {
+var25 = 0;
+} else {
+var25 = var_pexprnode7->type->type_table[cltype26] == idtype27;
+}
+}
+if (!var25) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26487);
+show_backtrace(1);
+}
+var28 = NEW_parser_nodes__AIfexprExpr(&type_parser_nodes__AIfexprExpr);
+((void (*)(val*, val*, val*, val*, val*, val*, val*))(var28->class->vft[COLOR_parser_prod__AIfexprExpr__init_aifexprexpr]))(var28, var_tkwifnode2, var_pexprnode3, var_tkwthennode4, var_pexprnode5, var_tkwelsenode6, var_pexprnode7) /* init_aifexprexpr on <var28:AIfexprExpr>*/;
+var_pexprnode1 = var28;
 var_node_list = var_pexprnode1;
-var20 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction690> */
-var21 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var20) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var21, var_node_list) /* push on <var_p:Parser>*/;
+var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction714> */
+var30 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var29) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var30, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction690#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction690__action(val* self, val* p0) {
-parser__ReduceAction690__action(self, p0);
+/* method parser#ReduceAction714#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction714__action(val* self, val* p0) {
+parser__ReduceAction714__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction691#action for (self: ReduceAction691, Parser) */
-void parser__ReduceAction691__action(val* self, val* p0) {
+/* method parser#ReduceAction716#action for (self: ReduceAction716, Parser) */
+void parser__ReduceAction716__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var3 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
-short int var7 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
-val* var14 /* : AIfExpr */;
-val* var15 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
-long var16 /* : Int */;
-long var17 /* : Int */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AOrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AOrExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var3;
+var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var6;
-var_tkwifnode2 = var_nodearraylist1;
-/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
-cltype = type_nullable_parser_nodes__TKwif.color;
-idtype = type_nullable_parser_nodes__TKwif.id;
-if(var_tkwifnode2 == NULL) {
-var7 = 1;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwifnode2->type->table_size) {
-var7 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var7 = var_tkwifnode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var7) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25934);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26510);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist3;
+var_pexprnode3 = var_nodearraylist4;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype9 = type_nullable_parser_nodes__AExpr.color;
-idtype10 = type_nullable_parser_nodes__AExpr.id;
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var8 = 1;
-} else {
-if(cltype9 >= var_pexprnode3->type->table_size) {
-var8 = 0;
-} else {
-var8 = var_pexprnode3->type->type_table[cltype9] == idtype10;
-}
-}
-if (!var8) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25936);
-exit(1);
-}
-var_pexprnode5 = var_nodearraylist6;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype12 = type_nullable_parser_nodes__AExpr.color;
-idtype13 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var11 = 1;
+var6 = 1;
 } else {
-if(cltype12 >= var_pexprnode5->type->table_size) {
-var11 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var11 = var_pexprnode5->type->type_table[cltype12] == idtype13;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var11) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25938);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26512);
+show_backtrace(1);
 }
-var14 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
-var15 = NULL;
-((void (*)(val*, val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var14, var_tkwifnode2, var_pexprnode3, var15, var_pexprnode5) /* init_aifexpr on <var14:AIfExpr>*/;
-CHECK_NEW_parser_nodes__AIfExpr(var14);
-var_pexprnode1 = var14;
+var9 = NEW_parser_nodes__AOrExpr(&type_parser_nodes__AOrExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AOrExpr__init_aorexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aorexpr on <var9:AOrExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction691> */
-var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction716> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction691#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction691__action(val* self, val* p0) {
-parser__ReduceAction691__action(self, p0);
+/* method parser#ReduceAction716#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction716__action(val* self, val* p0) {
+parser__ReduceAction716__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction692#action for (self: ReduceAction692, Parser) */
-void parser__ReduceAction692__action(val* self, val* p0) {
+/* method parser#ReduceAction717#action for (self: ReduceAction717, Parser) */
+void parser__ReduceAction717__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var4 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
-short int var8 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
-val* var15 /* : AIfExpr */;
-val* var16 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AIfExpr */;
-long var17 /* : Int */;
-long var18 /* : Int */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AAndExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAndExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var3;
+var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var7;
-var_tkwifnode2 = var_nodearraylist1;
-/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
-cltype = type_nullable_parser_nodes__TKwif.color;
-idtype = type_nullable_parser_nodes__TKwif.id;
-if(var_tkwifnode2 == NULL) {
-var8 = 1;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwifnode2->type->table_size) {
-var8 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var8 = var_tkwifnode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var8) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25962);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26531);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist3;
+var_pexprnode3 = var_nodearraylist4;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype10 = type_nullable_parser_nodes__AExpr.color;
-idtype11 = type_nullable_parser_nodes__AExpr.id;
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var9 = 1;
-} else {
-if(cltype10 >= var_pexprnode3->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_pexprnode3->type->type_table[cltype10] == idtype11;
-}
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25964);
-exit(1);
-}
-var_pexprnode5 = var_nodearraylist7;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype13 = type_nullable_parser_nodes__AExpr.color;
-idtype14 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var12 = 1;
+var6 = 1;
 } else {
-if(cltype13 >= var_pexprnode5->type->table_size) {
-var12 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var12 = var_pexprnode5->type->type_table[cltype13] == idtype14;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var12) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25966);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26533);
+show_backtrace(1);
 }
-var15 = NEW_parser_nodes__AIfExpr(&type_parser_nodes__AIfExpr);
-var16 = NULL;
-((void (*)(val*, val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__AIfExpr__init_aifexpr]))(var15, var_tkwifnode2, var_pexprnode3, var16, var_pexprnode5) /* init_aifexpr on <var15:AIfExpr>*/;
-CHECK_NEW_parser_nodes__AIfExpr(var15);
-var_pexprnode1 = var15;
+var9 = NEW_parser_nodes__AAndExpr(&type_parser_nodes__AAndExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AAndExpr__init_aandexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aandexpr on <var9:AAndExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction692> */
-var18 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var17) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var18, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction717> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction692#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction692__action(val* self, val* p0) {
-parser__ReduceAction692__action(self, p0);
+/* method parser#ReduceAction717#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction717__action(val* self, val* p0) {
+parser__ReduceAction717__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction695#action for (self: ReduceAction695, Parser) */
-void parser__ReduceAction695__action(val* self, val* p0) {
+/* method parser#ReduceAction718#action for (self: ReduceAction718, Parser) */
+void parser__ReduceAction718__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var3 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var5 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwloopnode2 /* var tkwloopnode2: nullable Object */;
-short int var4 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var6 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var5 /* : Bool */;
-int cltype6;
-int idtype7;
-val* var_plabelnode4 /* var plabelnode4: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var11 /* : ALoopExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ALoopExpr */;
+short int var7 /* : Bool */;
+int cltype8;
+int idtype9;
+val* var10 /* : AOrElseExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AOrElseExpr */;
+long var11 /* : Int */;
 long var12 /* : Int */;
-long var13 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
+var_nodearraylist5 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist4 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var_tkwloopnode2 = var_nodearraylist1;
-/* <var_tkwloopnode2:nullable Object> isa nullable TKwloop */
-cltype = type_nullable_parser_nodes__TKwloop.color;
-idtype = type_nullable_parser_nodes__TKwloop.id;
-if(var_tkwloopnode2 == NULL) {
-var4 = 1;
+var_nodearraylist3 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var5;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var6 = 1;
 } else {
-if(cltype >= var_tkwloopnode2->type->table_size) {
-var4 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var6 = 0;
 } else {
-var4 = var_tkwloopnode2->type->type_table[cltype] == idtype;
+var6 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var4) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25986);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26553);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist2;
+var_pexprnode3 = var_nodearraylist5;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype6 = type_nullable_parser_nodes__AExpr.color;
-idtype7 = type_nullable_parser_nodes__AExpr.id;
+cltype8 = type_nullable_parser_nodes__AExpr.color;
+idtype9 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var5 = 1;
-} else {
-if(cltype6 >= var_pexprnode3->type->table_size) {
-var5 = 0;
-} else {
-var5 = var_pexprnode3->type->type_table[cltype6] == idtype7;
-}
-}
-if (!var5) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25988);
-exit(1);
-}
-var_plabelnode4 = var_nodearraylist3;
-/* <var_plabelnode4:nullable Object> isa nullable ALabel */
-cltype9 = type_nullable_parser_nodes__ALabel.color;
-idtype10 = type_nullable_parser_nodes__ALabel.id;
-if(var_plabelnode4 == NULL) {
-var8 = 1;
+var7 = 1;
 } else {
-if(cltype9 >= var_plabelnode4->type->table_size) {
-var8 = 0;
+if(cltype8 >= var_pexprnode3->type->table_size) {
+var7 = 0;
 } else {
-var8 = var_plabelnode4->type->type_table[cltype9] == idtype10;
+var7 = var_pexprnode3->type->type_table[cltype8] == idtype9;
 }
 }
-if (!var8) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 25990);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26555);
+show_backtrace(1);
 }
-var11 = NEW_parser_nodes__ALoopExpr(&type_parser_nodes__ALoopExpr);
-((void (*)(val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__ALoopExpr__init_aloopexpr]))(var11, var_tkwloopnode2, var_pexprnode3, var_plabelnode4) /* init_aloopexpr on <var11:ALoopExpr>*/;
-CHECK_NEW_parser_nodes__ALoopExpr(var11);
-var_pexprnode1 = var11;
+var10 = NEW_parser_nodes__AOrElseExpr(&type_parser_nodes__AOrElseExpr);
+((void (*)(val*, val*, val*))(var10->class->vft[COLOR_parser_prod__AOrElseExpr__init_aorelseexpr]))(var10, var_pexprnode2, var_pexprnode3) /* init_aorelseexpr on <var10:AOrElseExpr>*/;
+var_pexprnode1 = var10;
 var_node_list = var_pexprnode1;
-var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction695> */
-var13 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var12) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var13, var_node_list) /* push on <var_p:Parser>*/;
+var11 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction718> */
+var12 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var11) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var12, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction695#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction695__action(val* self, val* p0) {
-parser__ReduceAction695__action(self, p0);
+/* method parser#ReduceAction718#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction718__action(val* self, val* p0) {
+parser__ReduceAction718__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction696#action for (self: ReduceAction696, Parser) */
-void parser__ReduceAction696__action(val* self, val* p0) {
+/* method parser#ReduceAction719#action for (self: ReduceAction719, Parser) */
+void parser__ReduceAction719__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwloopnode2 /* var tkwloopnode2: nullable Object */;
-short int var3 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var4 /* : Bool */;
-int cltype5;
-int idtype6;
-val* var7 /* : ALoopExpr */;
-val* var8 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable ALoopExpr */;
-long var9 /* : Int */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AImpliesExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AImpliesExpr */;
 long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var2;
-var_tkwloopnode2 = var_nodearraylist1;
-/* <var_tkwloopnode2:nullable Object> isa nullable TKwloop */
-cltype = type_nullable_parser_nodes__TKwloop.color;
-idtype = type_nullable_parser_nodes__TKwloop.id;
-if(var_tkwloopnode2 == NULL) {
-var3 = 1;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwloopnode2->type->table_size) {
-var3 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var3 = var_tkwloopnode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var3) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26008);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26574);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist2;
+var_pexprnode3 = var_nodearraylist4;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype5 = type_nullable_parser_nodes__AExpr.color;
-idtype6 = type_nullable_parser_nodes__AExpr.id;
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var4 = 1;
+var6 = 1;
 } else {
-if(cltype5 >= var_pexprnode3->type->table_size) {
-var4 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var4 = var_pexprnode3->type->type_table[cltype5] == idtype6;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var4) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26010);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26576);
+show_backtrace(1);
 }
-var7 = NEW_parser_nodes__ALoopExpr(&type_parser_nodes__ALoopExpr);
-var8 = NULL;
-((void (*)(val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__ALoopExpr__init_aloopexpr]))(var7, var_tkwloopnode2, var_pexprnode3, var8) /* init_aloopexpr on <var7:ALoopExpr>*/;
-CHECK_NEW_parser_nodes__ALoopExpr(var7);
-var_pexprnode1 = var7;
-var_node_list = var_pexprnode1;
-var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction696> */
-var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
+var9 = NEW_parser_nodes__AImpliesExpr(&type_parser_nodes__AImpliesExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AImpliesExpr__init_aimpliesexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aimpliesexpr on <var9:AImpliesExpr>*/;
+var_pexprnode1 = var9;
+var_node_list = var_pexprnode1;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction719> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction696#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction696__action(val* self, val* p0) {
-parser__ReduceAction696__action(self, p0);
+/* method parser#ReduceAction719#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction719__action(val* self, val* p0) {
+parser__ReduceAction719__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction697#action for (self: ReduceAction697, Parser) */
-void parser__ReduceAction697__action(val* self, val* p0) {
+/* method parser#ReduceAction721#action for (self: ReduceAction721, Parser) */
+void parser__ReduceAction721__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var5 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var7 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwwhilenode2 /* var tkwwhilenode2: nullable Object */;
-short int var8 /* : Bool */;
+val* var_tkwnotnode2 /* var tkwnotnode2: nullable Object */;
+short int var4 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var_tkwdonode4 /* var tkwdonode4: nullable Object */;
-short int var12 /* : Bool */;
-int cltype13;
-int idtype14;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var15 /* : Bool */;
-int cltype16;
-int idtype17;
-val* var_plabelnode6 /* var plabelnode6: nullable Object */;
-short int var18 /* : Bool */;
-int cltype19;
-int idtype20;
-val* var21 /* : AWhileExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AWhileExpr */;
-long var22 /* : Int */;
-long var23 /* : Int */;
+short int var5 /* : Bool */;
+int cltype6;
+int idtype7;
+val* var8 /* : ANotExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ANotExpr */;
+long var9 /* : Int */;
+long var10 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var1;
+var_nodearraylist3 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var2;
+var_nodearraylist2 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var7;
-var_tkwwhilenode2 = var_nodearraylist1;
-/* <var_tkwwhilenode2:nullable Object> isa nullable TKwwhile */
-cltype = type_nullable_parser_nodes__TKwwhile.color;
-idtype = type_nullable_parser_nodes__TKwwhile.id;
-if(var_tkwwhilenode2 == NULL) {
-var8 = 1;
+var_nodearraylist1 = var3;
+var_tkwnotnode2 = var_nodearraylist1;
+/* <var_tkwnotnode2:nullable Object> isa nullable TKwnot */
+cltype = type_nullable_parser_nodes__TKwnot.color;
+idtype = type_nullable_parser_nodes__TKwnot.id;
+if(var_tkwnotnode2 == NULL) {
+var4 = 1;
 } else {
-if(cltype >= var_tkwwhilenode2->type->table_size) {
-var8 = 0;
+if(cltype >= var_tkwnotnode2->type->table_size) {
+var4 = 0;
 } else {
-var8 = var_tkwwhilenode2->type->type_table[cltype] == idtype;
+var4 = var_tkwnotnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var8) {
+if (!var4) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26033);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26594);
+show_backtrace(1);
 }
 var_pexprnode3 = var_nodearraylist3;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype10 = type_nullable_parser_nodes__AExpr.color;
-idtype11 = type_nullable_parser_nodes__AExpr.id;
+cltype6 = type_nullable_parser_nodes__AExpr.color;
+idtype7 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var9 = 1;
-} else {
-if(cltype10 >= var_pexprnode3->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_pexprnode3->type->type_table[cltype10] == idtype11;
-}
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26035);
-exit(1);
-}
-var_tkwdonode4 = var_nodearraylist5;
-/* <var_tkwdonode4:nullable Object> isa nullable TKwdo */
-cltype13 = type_nullable_parser_nodes__TKwdo.color;
-idtype14 = type_nullable_parser_nodes__TKwdo.id;
-if(var_tkwdonode4 == NULL) {
-var12 = 1;
-} else {
-if(cltype13 >= var_tkwdonode4->type->table_size) {
-var12 = 0;
-} else {
-var12 = var_tkwdonode4->type->type_table[cltype13] == idtype14;
-}
-}
-if (!var12) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26037);
-exit(1);
-}
-var_pexprnode5 = var_nodearraylist6;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype16 = type_nullable_parser_nodes__AExpr.color;
-idtype17 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var15 = 1;
-} else {
-if(cltype16 >= var_pexprnode5->type->table_size) {
-var15 = 0;
-} else {
-var15 = var_pexprnode5->type->type_table[cltype16] == idtype17;
-}
-}
-if (!var15) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26039);
-exit(1);
-}
-var_plabelnode6 = var_nodearraylist7;
-/* <var_plabelnode6:nullable Object> isa nullable ALabel */
-cltype19 = type_nullable_parser_nodes__ALabel.color;
-idtype20 = type_nullable_parser_nodes__ALabel.id;
-if(var_plabelnode6 == NULL) {
-var18 = 1;
+var5 = 1;
 } else {
-if(cltype19 >= var_plabelnode6->type->table_size) {
-var18 = 0;
+if(cltype6 >= var_pexprnode3->type->table_size) {
+var5 = 0;
 } else {
-var18 = var_plabelnode6->type->type_table[cltype19] == idtype20;
+var5 = var_pexprnode3->type->type_table[cltype6] == idtype7;
 }
 }
-if (!var18) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26041);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26596);
+show_backtrace(1);
 }
-var21 = NEW_parser_nodes__AWhileExpr(&type_parser_nodes__AWhileExpr);
-((void (*)(val*, val*, val*, val*, val*, val*))(var21->class->vft[COLOR_parser_prod__AWhileExpr__init_awhileexpr]))(var21, var_tkwwhilenode2, var_pexprnode3, var_tkwdonode4, var_pexprnode5, var_plabelnode6) /* init_awhileexpr on <var21:AWhileExpr>*/;
-CHECK_NEW_parser_nodes__AWhileExpr(var21);
-var_pexprnode1 = var21;
+var8 = NEW_parser_nodes__ANotExpr(&type_parser_nodes__ANotExpr);
+((void (*)(val*, val*, val*))(var8->class->vft[COLOR_parser_prod__ANotExpr__init_anotexpr]))(var8, var_tkwnotnode2, var_pexprnode3) /* init_anotexpr on <var8:ANotExpr>*/;
+var_pexprnode1 = var8;
 var_node_list = var_pexprnode1;
-var22 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction697> */
-var23 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var22) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var23, var_node_list) /* push on <var_p:Parser>*/;
+var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction721> */
+var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction697#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction697__action(val* self, val* p0) {
-parser__ReduceAction697__action(self, p0);
+/* method parser#ReduceAction721#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction721__action(val* self, val* p0) {
+parser__ReduceAction721__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction698#action for (self: ReduceAction698, Parser) */
-void parser__ReduceAction698__action(val* self, val* p0) {
+/* method parser#ReduceAction723#action for (self: ReduceAction723, Parser) */
+void parser__ReduceAction723__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var3 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var6 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwwhilenode2 /* var tkwwhilenode2: nullable Object */;
-short int var7 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var_tkwdonode4 /* var tkwdonode4: nullable Object */;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var14 /* : Bool */;
-int cltype15;
-int idtype16;
-val* var17 /* : AWhileExpr */;
-val* var18 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AWhileExpr */;
-long var19 /* : Int */;
-long var20 /* : Int */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AEqExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AEqExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var3;
+var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var6;
-var_tkwwhilenode2 = var_nodearraylist1;
-/* <var_tkwwhilenode2:nullable Object> isa nullable TKwwhile */
-cltype = type_nullable_parser_nodes__TKwwhile.color;
-idtype = type_nullable_parser_nodes__TKwwhile.id;
-if(var_tkwwhilenode2 == NULL) {
-var7 = 1;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwwhilenode2->type->table_size) {
-var7 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var7 = var_tkwwhilenode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var7) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26065);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26615);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist3;
+var_pexprnode3 = var_nodearraylist4;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype9 = type_nullable_parser_nodes__AExpr.color;
-idtype10 = type_nullable_parser_nodes__AExpr.id;
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var8 = 1;
+var6 = 1;
 } else {
-if(cltype9 >= var_pexprnode3->type->table_size) {
-var8 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var8 = var_pexprnode3->type->type_table[cltype9] == idtype10;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var8) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26067);
-exit(1);
-}
-var_tkwdonode4 = var_nodearraylist5;
-/* <var_tkwdonode4:nullable Object> isa nullable TKwdo */
-cltype12 = type_nullable_parser_nodes__TKwdo.color;
-idtype13 = type_nullable_parser_nodes__TKwdo.id;
-if(var_tkwdonode4 == NULL) {
-var11 = 1;
-} else {
-if(cltype12 >= var_tkwdonode4->type->table_size) {
-var11 = 0;
-} else {
-var11 = var_tkwdonode4->type->type_table[cltype12] == idtype13;
-}
-}
-if (!var11) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26069);
-exit(1);
-}
-var_pexprnode5 = var_nodearraylist6;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype15 = type_nullable_parser_nodes__AExpr.color;
-idtype16 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var14 = 1;
-} else {
-if(cltype15 >= var_pexprnode5->type->table_size) {
-var14 = 0;
-} else {
-var14 = var_pexprnode5->type->type_table[cltype15] == idtype16;
-}
-}
-if (!var14) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26071);
-exit(1);
-}
-var17 = NEW_parser_nodes__AWhileExpr(&type_parser_nodes__AWhileExpr);
-var18 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*))(var17->class->vft[COLOR_parser_prod__AWhileExpr__init_awhileexpr]))(var17, var_tkwwhilenode2, var_pexprnode3, var_tkwdonode4, var_pexprnode5, var18) /* init_awhileexpr on <var17:AWhileExpr>*/;
-CHECK_NEW_parser_nodes__AWhileExpr(var17);
-var_pexprnode1 = var17;
-var_node_list = var_pexprnode1;
-var19 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction698> */
-var20 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var19) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var20, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction698#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction698__action(val* self, val* p0) {
-parser__ReduceAction698__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction699#action for (self: ReduceAction699, Parser) */
-void parser__ReduceAction699__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist15 /* var nodearraylist15: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist14 /* var nodearraylist14: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist13 /* var nodearraylist13: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist12 /* var nodearraylist12: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist11 /* var nodearraylist11: nullable Object */;
-val* var6 /* : nullable Object */;
-val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
-val* var7 /* : nullable Object */;
-val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
-val* var8 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var9 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var10 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var11 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var12 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var13 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var14 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var15 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var16 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var_tkwfornode2 /* var tkwfornode2: nullable Object */;
-short int var17 /* : Bool */;
-int cltype;
-int idtype;
-val* var_listnode3 /* var listnode3: nullable Object */;
-short int var18 /* : Bool */;
-int cltype19;
-int idtype20;
-val* var21 /* : Array[Object] */;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var22 /* : Bool */;
-int cltype23;
-int idtype24;
-val* var_tkwdonode6 /* var tkwdonode6: nullable Object */;
-short int var25 /* : Bool */;
-int cltype26;
-int idtype27;
-val* var_pexprnode7 /* var pexprnode7: nullable Object */;
-short int var28 /* : Bool */;
-int cltype29;
-int idtype30;
-val* var_plabelnode8 /* var plabelnode8: nullable Object */;
-short int var31 /* : Bool */;
-int cltype32;
-int idtype33;
-val* var34 /* : AForExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AForExpr */;
-long var35 /* : Int */;
-long var36 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist15 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist14 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist13 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist12 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist11 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist10 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist9 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var8;
-var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var9;
-var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var10;
-var11 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var11;
-var12 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var12;
-var13 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var13;
-var14 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var14;
-var15 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var15;
-var16 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var16->class->vft[COLOR_array__Array__init]))(var16) /* init on <var16:Array[Object]>*/;
-CHECK_NEW_array__Array(var16);
-var_listnode4 = var16;
-var_tkwfornode2 = var_nodearraylist1;
-/* <var_tkwfornode2:nullable Object> isa nullable TKwfor */
-cltype = type_nullable_parser_nodes__TKwfor.color;
-idtype = type_nullable_parser_nodes__TKwfor.id;
-if(var_tkwfornode2 == NULL) {
-var17 = 1;
-} else {
-if(cltype >= var_tkwfornode2->type->table_size) {
-var17 = 0;
-} else {
-var17 = var_tkwfornode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var17) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26105);
-exit(1);
-}
-var_listnode3 = var_nodearraylist5;
-/* <var_listnode3:nullable Object> isa Array[Object] */
-cltype19 = type_array__Arraykernel__Object.color;
-idtype20 = type_array__Arraykernel__Object.id;
-if(var_listnode3 == NULL) {
-var18 = 0;
-} else {
-if(cltype19 >= var_listnode3->type->table_size) {
-var18 = 0;
-} else {
-var18 = var_listnode3->type->type_table[cltype19] == idtype20;
-}
-}
-if (!var18) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26107);
-exit(1);
-}
-var21 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction699>*/;
-var_listnode4 = var21;
-var_pexprnode5 = var_nodearraylist11;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype23 = type_nullable_parser_nodes__AExpr.color;
-idtype24 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var22 = 1;
-} else {
-if(cltype23 >= var_pexprnode5->type->table_size) {
-var22 = 0;
-} else {
-var22 = var_pexprnode5->type->type_table[cltype23] == idtype24;
-}
-}
-if (!var22) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26110);
-exit(1);
-}
-var_tkwdonode6 = var_nodearraylist13;
-/* <var_tkwdonode6:nullable Object> isa nullable TKwdo */
-cltype26 = type_nullable_parser_nodes__TKwdo.color;
-idtype27 = type_nullable_parser_nodes__TKwdo.id;
-if(var_tkwdonode6 == NULL) {
-var25 = 1;
-} else {
-if(cltype26 >= var_tkwdonode6->type->table_size) {
-var25 = 0;
-} else {
-var25 = var_tkwdonode6->type->type_table[cltype26] == idtype27;
-}
-}
-if (!var25) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26112);
-exit(1);
-}
-var_pexprnode7 = var_nodearraylist14;
-/* <var_pexprnode7:nullable Object> isa nullable AExpr */
-cltype29 = type_nullable_parser_nodes__AExpr.color;
-idtype30 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode7 == NULL) {
-var28 = 1;
-} else {
-if(cltype29 >= var_pexprnode7->type->table_size) {
-var28 = 0;
-} else {
-var28 = var_pexprnode7->type->type_table[cltype29] == idtype30;
-}
-}
-if (!var28) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26114);
-exit(1);
-}
-var_plabelnode8 = var_nodearraylist15;
-/* <var_plabelnode8:nullable Object> isa nullable ALabel */
-cltype32 = type_nullable_parser_nodes__ALabel.color;
-idtype33 = type_nullable_parser_nodes__ALabel.id;
-if(var_plabelnode8 == NULL) {
-var31 = 1;
-} else {
-if(cltype32 >= var_plabelnode8->type->table_size) {
-var31 = 0;
-} else {
-var31 = var_plabelnode8->type->type_table[cltype32] == idtype33;
-}
-}
-if (!var31) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26116);
-exit(1);
-}
-var34 = NEW_parser_nodes__AForExpr(&type_parser_nodes__AForExpr);
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var34->class->vft[COLOR_parser_prod__AForExpr__init_aforexpr]))(var34, var_tkwfornode2, var_listnode4, var_pexprnode5, var_tkwdonode6, var_pexprnode7, var_plabelnode8) /* init_aforexpr on <var34:AForExpr>*/;
-CHECK_NEW_parser_nodes__AForExpr(var34);
-var_pexprnode1 = var34;
-var_node_list = var_pexprnode1;
-var35 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction699> */
-var36 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var35) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var36, var_node_list) /* push on <var_p:Parser>*/;
-RET_LABEL:;
-}
-/* method parser#ReduceAction699#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction699__action(val* self, val* p0) {
-parser__ReduceAction699__action(self, p0);
-RET_LABEL:;
-}
-/* method parser#ReduceAction700#action for (self: ReduceAction700, Parser) */
-void parser__ReduceAction700__action(val* self, val* p0) {
-val* var_p /* var p: Parser */;
-val* var /* : null */;
-val* var_node_list /* var node_list: nullable Object */;
-val* var1 /* : nullable Object */;
-val* var_nodearraylist11 /* var nodearraylist11: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var6 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var7 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var8 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var9 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var10 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var11 /* : nullable Object */;
-val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var12 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var_tkwfornode2 /* var tkwfornode2: nullable Object */;
-short int var13 /* : Bool */;
-int cltype;
-int idtype;
-val* var_listnode3 /* var listnode3: nullable Object */;
-short int var14 /* : Bool */;
-int cltype15;
-int idtype16;
-val* var17 /* : Array[Object] */;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var18 /* : Bool */;
-int cltype19;
-int idtype20;
-val* var_tkwdonode6 /* var tkwdonode6: nullable Object */;
-short int var21 /* : Bool */;
-int cltype22;
-int idtype23;
-val* var_pexprnode7 /* var pexprnode7: nullable Object */;
-short int var24 /* : Bool */;
-int cltype25;
-int idtype26;
-val* var_plabelnode8 /* var plabelnode8: nullable Object */;
-short int var27 /* : Bool */;
-int cltype28;
-int idtype29;
-val* var30 /* : AForExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AForExpr */;
-long var31 /* : Int */;
-long var32 /* : Int */;
-var_p = p0;
-var = NULL;
-var_node_list = var;
-var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist11 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist10 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist9 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var8;
-var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var9;
-var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var10;
-var11 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var11;
-var12 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var12->class->vft[COLOR_array__Array__init]))(var12) /* init on <var12:Array[Object]>*/;
-CHECK_NEW_array__Array(var12);
-var_listnode4 = var12;
-var_tkwfornode2 = var_nodearraylist1;
-/* <var_tkwfornode2:nullable Object> isa nullable TKwfor */
-cltype = type_nullable_parser_nodes__TKwfor.color;
-idtype = type_nullable_parser_nodes__TKwfor.id;
-if(var_tkwfornode2 == NULL) {
-var13 = 1;
-} else {
-if(cltype >= var_tkwfornode2->type->table_size) {
-var13 = 0;
-} else {
-var13 = var_tkwfornode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var13) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26147);
-exit(1);
-}
-var_listnode3 = var_nodearraylist3;
-/* <var_listnode3:nullable Object> isa Array[Object] */
-cltype15 = type_array__Arraykernel__Object.color;
-idtype16 = type_array__Arraykernel__Object.id;
-if(var_listnode3 == NULL) {
-var14 = 0;
-} else {
-if(cltype15 >= var_listnode3->type->table_size) {
-var14 = 0;
-} else {
-var14 = var_listnode3->type->type_table[cltype15] == idtype16;
-}
-}
-if (!var14) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26149);
-exit(1);
-}
-var17 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction700>*/;
-var_listnode4 = var17;
-var_pexprnode5 = var_nodearraylist7;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype19 = type_nullable_parser_nodes__AExpr.color;
-idtype20 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var18 = 1;
-} else {
-if(cltype19 >= var_pexprnode5->type->table_size) {
-var18 = 0;
-} else {
-var18 = var_pexprnode5->type->type_table[cltype19] == idtype20;
-}
-}
-if (!var18) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26152);
-exit(1);
-}
-var_tkwdonode6 = var_nodearraylist9;
-/* <var_tkwdonode6:nullable Object> isa nullable TKwdo */
-cltype22 = type_nullable_parser_nodes__TKwdo.color;
-idtype23 = type_nullable_parser_nodes__TKwdo.id;
-if(var_tkwdonode6 == NULL) {
-var21 = 1;
-} else {
-if(cltype22 >= var_tkwdonode6->type->table_size) {
-var21 = 0;
-} else {
-var21 = var_tkwdonode6->type->type_table[cltype22] == idtype23;
-}
-}
-if (!var21) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26154);
-exit(1);
-}
-var_pexprnode7 = var_nodearraylist10;
-/* <var_pexprnode7:nullable Object> isa nullable AExpr */
-cltype25 = type_nullable_parser_nodes__AExpr.color;
-idtype26 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode7 == NULL) {
-var24 = 1;
-} else {
-if(cltype25 >= var_pexprnode7->type->table_size) {
-var24 = 0;
-} else {
-var24 = var_pexprnode7->type->type_table[cltype25] == idtype26;
-}
-}
-if (!var24) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26156);
-exit(1);
-}
-var_plabelnode8 = var_nodearraylist11;
-/* <var_plabelnode8:nullable Object> isa nullable ALabel */
-cltype28 = type_nullable_parser_nodes__ALabel.color;
-idtype29 = type_nullable_parser_nodes__ALabel.id;
-if(var_plabelnode8 == NULL) {
-var27 = 1;
-} else {
-if(cltype28 >= var_plabelnode8->type->table_size) {
-var27 = 0;
-} else {
-var27 = var_plabelnode8->type->type_table[cltype28] == idtype29;
-}
-}
-if (!var27) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26158);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26617);
+show_backtrace(1);
 }
-var30 = NEW_parser_nodes__AForExpr(&type_parser_nodes__AForExpr);
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var30->class->vft[COLOR_parser_prod__AForExpr__init_aforexpr]))(var30, var_tkwfornode2, var_listnode4, var_pexprnode5, var_tkwdonode6, var_pexprnode7, var_plabelnode8) /* init_aforexpr on <var30:AForExpr>*/;
-CHECK_NEW_parser_nodes__AForExpr(var30);
-var_pexprnode1 = var30;
+var9 = NEW_parser_nodes__AEqExpr(&type_parser_nodes__AEqExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AEqExpr__init_aeqexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aeqexpr on <var9:AEqExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var31 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction700> */
-var32 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var31) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var32, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction723> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction700#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction700__action(val* self, val* p0) {
-parser__ReduceAction700__action(self, p0);
+/* method parser#ReduceAction723#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction723__action(val* self, val* p0) {
+parser__ReduceAction723__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction701#action for (self: ReduceAction701, Parser) */
-void parser__ReduceAction701__action(val* self, val* p0) {
+/* method parser#ReduceAction724#action for (self: ReduceAction724, Parser) */
+void parser__ReduceAction724__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist14 /* var nodearraylist14: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist13 /* var nodearraylist13: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist12 /* var nodearraylist12: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist11 /* var nodearraylist11: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
-val* var6 /* : nullable Object */;
-val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
-val* var7 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var8 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var9 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var10 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var11 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var12 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var13 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var14 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var15 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var_tkwfornode2 /* var tkwfornode2: nullable Object */;
-short int var16 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_listnode3 /* var listnode3: nullable Object */;
-short int var17 /* : Bool */;
-int cltype18;
-int idtype19;
-val* var20 /* : Array[Object] */;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var21 /* : Bool */;
-int cltype22;
-int idtype23;
-val* var_tkwdonode6 /* var tkwdonode6: nullable Object */;
-short int var24 /* : Bool */;
-int cltype25;
-int idtype26;
-val* var_pexprnode7 /* var pexprnode7: nullable Object */;
-short int var27 /* : Bool */;
-int cltype28;
-int idtype29;
-val* var30 /* : AForExpr */;
-val* var31 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AForExpr */;
-long var32 /* : Int */;
-long var33 /* : Int */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : ANeExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ANeExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist14 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist13 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist12 = var3;
+var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist11 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist10 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist9 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var8;
-var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var9;
-var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var10;
-var11 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var11;
-var12 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var12;
-var13 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var13;
-var14 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var14;
-var15 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var15->class->vft[COLOR_array__Array__init]))(var15) /* init on <var15:Array[Object]>*/;
-CHECK_NEW_array__Array(var15);
-var_listnode4 = var15;
-var_tkwfornode2 = var_nodearraylist1;
-/* <var_tkwfornode2:nullable Object> isa nullable TKwfor */
-cltype = type_nullable_parser_nodes__TKwfor.color;
-idtype = type_nullable_parser_nodes__TKwfor.id;
-if(var_tkwfornode2 == NULL) {
-var16 = 1;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwfornode2->type->table_size) {
-var16 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var16 = var_tkwfornode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var16) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26192);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26636);
+show_backtrace(1);
 }
-var_listnode3 = var_nodearraylist5;
-/* <var_listnode3:nullable Object> isa Array[Object] */
-cltype18 = type_array__Arraykernel__Object.color;
-idtype19 = type_array__Arraykernel__Object.id;
-if(var_listnode3 == NULL) {
-var17 = 0;
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype18 >= var_listnode3->type->table_size) {
-var17 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var17 = var_listnode3->type->type_table[cltype18] == idtype19;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var17) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26194);
-exit(1);
-}
-var20 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction701>*/;
-var_listnode4 = var20;
-var_pexprnode5 = var_nodearraylist11;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype22 = type_nullable_parser_nodes__AExpr.color;
-idtype23 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var21 = 1;
-} else {
-if(cltype22 >= var_pexprnode5->type->table_size) {
-var21 = 0;
-} else {
-var21 = var_pexprnode5->type->type_table[cltype22] == idtype23;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26638);
+show_backtrace(1);
 }
+var9 = NEW_parser_nodes__ANeExpr(&type_parser_nodes__ANeExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ANeExpr__init_aneexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aneexpr on <var9:ANeExpr>*/;
+var_pexprnode1 = var9;
+var_node_list = var_pexprnode1;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction724> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
 }
-if (!var21) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26197);
-exit(1);
+/* method parser#ReduceAction724#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction724__action(val* self, val* p0) {
+parser__ReduceAction724__action(self, p0);
+RET_LABEL:;
 }
-var_tkwdonode6 = var_nodearraylist13;
-/* <var_tkwdonode6:nullable Object> isa nullable TKwdo */
-cltype25 = type_nullable_parser_nodes__TKwdo.color;
-idtype26 = type_nullable_parser_nodes__TKwdo.id;
-if(var_tkwdonode6 == NULL) {
-var24 = 1;
+/* method parser#ReduceAction725#action for (self: ReduceAction725, Parser) */
+void parser__ReduceAction725__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : ALtExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ALtExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype25 >= var_tkwdonode6->type->table_size) {
-var24 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var24 = var_tkwdonode6->type->type_table[cltype25] == idtype26;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var24) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26199);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26657);
+show_backtrace(1);
 }
-var_pexprnode7 = var_nodearraylist14;
-/* <var_pexprnode7:nullable Object> isa nullable AExpr */
-cltype28 = type_nullable_parser_nodes__AExpr.color;
-idtype29 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode7 == NULL) {
-var27 = 1;
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype28 >= var_pexprnode7->type->table_size) {
-var27 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var27 = var_pexprnode7->type->type_table[cltype28] == idtype29;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var27) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26201);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26659);
+show_backtrace(1);
 }
-var30 = NEW_parser_nodes__AForExpr(&type_parser_nodes__AForExpr);
-var31 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var30->class->vft[COLOR_parser_prod__AForExpr__init_aforexpr]))(var30, var_tkwfornode2, var_listnode4, var_pexprnode5, var_tkwdonode6, var_pexprnode7, var31) /* init_aforexpr on <var30:AForExpr>*/;
-CHECK_NEW_parser_nodes__AForExpr(var30);
-var_pexprnode1 = var30;
+var9 = NEW_parser_nodes__ALtExpr(&type_parser_nodes__ALtExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ALtExpr__init_altexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_altexpr on <var9:ALtExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var32 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction701> */
-var33 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var32) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var33, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction725> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction701#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction701__action(val* self, val* p0) {
-parser__ReduceAction701__action(self, p0);
+/* method parser#ReduceAction725#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction725__action(val* self, val* p0) {
+parser__ReduceAction725__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction702#action for (self: ReduceAction702, Parser) */
-void parser__ReduceAction702__action(val* self, val* p0) {
+/* method parser#ReduceAction726#action for (self: ReduceAction726, Parser) */
+void parser__ReduceAction726__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var6 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var7 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var8 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var9 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var10 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var11 /* : Array[Object] */;
-val* var_listnode4 /* var listnode4: Array[Object] */;
-val* var_tkwfornode2 /* var tkwfornode2: nullable Object */;
-short int var12 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_listnode3 /* var listnode3: nullable Object */;
-short int var13 /* : Bool */;
-int cltype14;
-int idtype15;
-val* var16 /* : Array[Object] */;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var17 /* : Bool */;
-int cltype18;
-int idtype19;
-val* var_tkwdonode6 /* var tkwdonode6: nullable Object */;
-short int var20 /* : Bool */;
-int cltype21;
-int idtype22;
-val* var_pexprnode7 /* var pexprnode7: nullable Object */;
-short int var23 /* : Bool */;
-int cltype24;
-int idtype25;
-val* var26 /* : AForExpr */;
-val* var27 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AForExpr */;
-long var28 /* : Int */;
-long var29 /* : Int */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : ALeExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ALeExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist10 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist9 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var3;
+var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var8;
-var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var9;
-var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var10;
-var11 = NEW_array__Array(&type_array__Arraykernel__Object);
-((void (*)(val*))(var11->class->vft[COLOR_array__Array__init]))(var11) /* init on <var11:Array[Object]>*/;
-CHECK_NEW_array__Array(var11);
-var_listnode4 = var11;
-var_tkwfornode2 = var_nodearraylist1;
-/* <var_tkwfornode2:nullable Object> isa nullable TKwfor */
-cltype = type_nullable_parser_nodes__TKwfor.color;
-idtype = type_nullable_parser_nodes__TKwfor.id;
-if(var_tkwfornode2 == NULL) {
-var12 = 1;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwfornode2->type->table_size) {
-var12 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var12 = var_tkwfornode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var12) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26231);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26678);
+show_backtrace(1);
 }
-var_listnode3 = var_nodearraylist3;
-/* <var_listnode3:nullable Object> isa Array[Object] */
-cltype14 = type_array__Arraykernel__Object.color;
-idtype15 = type_array__Arraykernel__Object.id;
-if(var_listnode3 == NULL) {
-var13 = 0;
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype14 >= var_listnode3->type->table_size) {
-var13 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var13 = var_listnode3->type->type_table[cltype14] == idtype15;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var13) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26233);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26680);
+show_backtrace(1);
 }
-var16 = ((val* (*)(val*, val*, val*))(self->class->vft[COLOR_parser__ReduceAction__concat]))(self, var_listnode4, var_listnode3) /* concat on <self:ReduceAction702>*/;
-var_listnode4 = var16;
-var_pexprnode5 = var_nodearraylist7;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype18 = type_nullable_parser_nodes__AExpr.color;
-idtype19 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var17 = 1;
-} else {
-if(cltype18 >= var_pexprnode5->type->table_size) {
-var17 = 0;
-} else {
-var17 = var_pexprnode5->type->type_table[cltype18] == idtype19;
-}
-}
-if (!var17) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26236);
-exit(1);
+var9 = NEW_parser_nodes__ALeExpr(&type_parser_nodes__ALeExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ALeExpr__init_aleexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aleexpr on <var9:ALeExpr>*/;
+var_pexprnode1 = var9;
+var_node_list = var_pexprnode1;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction726> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
 }
-var_tkwdonode6 = var_nodearraylist9;
-/* <var_tkwdonode6:nullable Object> isa nullable TKwdo */
-cltype21 = type_nullable_parser_nodes__TKwdo.color;
-idtype22 = type_nullable_parser_nodes__TKwdo.id;
-if(var_tkwdonode6 == NULL) {
-var20 = 1;
+/* method parser#ReduceAction726#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction726__action(val* self, val* p0) {
+parser__ReduceAction726__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction727#action for (self: ReduceAction727, Parser) */
+void parser__ReduceAction727__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : ALlExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ALlExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype21 >= var_tkwdonode6->type->table_size) {
-var20 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var20 = var_tkwdonode6->type->type_table[cltype21] == idtype22;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var20) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26238);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26699);
+show_backtrace(1);
 }
-var_pexprnode7 = var_nodearraylist10;
-/* <var_pexprnode7:nullable Object> isa nullable AExpr */
-cltype24 = type_nullable_parser_nodes__AExpr.color;
-idtype25 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode7 == NULL) {
-var23 = 1;
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype24 >= var_pexprnode7->type->table_size) {
-var23 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var23 = var_pexprnode7->type->type_table[cltype24] == idtype25;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var23) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26240);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26701);
+show_backtrace(1);
 }
-var26 = NEW_parser_nodes__AForExpr(&type_parser_nodes__AForExpr);
-var27 = NULL;
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var26->class->vft[COLOR_parser_prod__AForExpr__init_aforexpr]))(var26, var_tkwfornode2, var_listnode4, var_pexprnode5, var_tkwdonode6, var_pexprnode7, var27) /* init_aforexpr on <var26:AForExpr>*/;
-CHECK_NEW_parser_nodes__AForExpr(var26);
-var_pexprnode1 = var26;
+var9 = NEW_parser_nodes__ALlExpr(&type_parser_nodes__ALlExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ALlExpr__init_allexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_allexpr on <var9:ALlExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var28 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction702> */
-var29 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var28) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var29, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction727> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction702#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction702__action(val* self, val* p0) {
-parser__ReduceAction702__action(self, p0);
+/* method parser#ReduceAction727#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction727__action(val* self, val* p0) {
+parser__ReduceAction727__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction703#action for (self: ReduceAction703, Parser) */
-void parser__ReduceAction703__action(val* self, val* p0) {
+/* method parser#ReduceAction728#action for (self: ReduceAction728, Parser) */
+void parser__ReduceAction728__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -8206,23 +7767,18 @@ val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwassertnode2 /* var tkwassertnode2: nullable Object */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
 short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode4 /* var pexprnode4: nullable Object */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
 short int var6 /* : Bool */;
 int cltype7;
 int idtype8;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var9 /* : Bool */;
-int cltype10;
-int idtype11;
-val* var12 /* : AAssertExpr */;
-val* var13 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAssertExpr */;
-long var14 /* : Int */;
-long var15 /* : Int */;
+val* var9 /* : AGtExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AGtExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
@@ -8234,637 +7790,660 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
 var_nodearraylist1 = var4;
-var_tkwassertnode2 = var_nodearraylist1;
-/* <var_tkwassertnode2:nullable Object> isa nullable TKwassert */
-cltype = type_nullable_parser_nodes__TKwassert.color;
-idtype = type_nullable_parser_nodes__TKwassert.id;
-if(var_tkwassertnode2 == NULL) {
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
 var5 = 1;
 } else {
-if(cltype >= var_tkwassertnode2->type->table_size) {
+if(cltype >= var_pexprnode2->type->table_size) {
 var5 = 0;
 } else {
-var5 = var_tkwassertnode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26263);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26720);
+show_backtrace(1);
 }
-var_pexprnode4 = var_nodearraylist2;
-/* <var_pexprnode4:nullable Object> isa nullable AExpr */
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
 cltype7 = type_nullable_parser_nodes__AExpr.color;
 idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode4 == NULL) {
+if(var_pexprnode3 == NULL) {
 var6 = 1;
 } else {
-if(cltype7 >= var_pexprnode4->type->table_size) {
+if(cltype7 >= var_pexprnode3->type->table_size) {
 var6 = 0;
 } else {
-var6 = var_pexprnode4->type->type_table[cltype7] == idtype8;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26265);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26722);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist4;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype10 = type_nullable_parser_nodes__AExpr.color;
-idtype11 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var9 = 1;
-} else {
-if(cltype10 >= var_pexprnode5->type->table_size) {
-var9 = 0;
-} else {
-var9 = var_pexprnode5->type->type_table[cltype10] == idtype11;
-}
-}
-if (!var9) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26267);
-exit(1);
-}
-var12 = NEW_parser_nodes__AAssertExpr(&type_parser_nodes__AAssertExpr);
-var13 = NULL;
-((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__AAssertExpr__init_aassertexpr]))(var12, var_tkwassertnode2, var13, var_pexprnode4, var_pexprnode5) /* init_aassertexpr on <var12:AAssertExpr>*/;
-CHECK_NEW_parser_nodes__AAssertExpr(var12);
-var_pexprnode1 = var12;
+var9 = NEW_parser_nodes__AGtExpr(&type_parser_nodes__AGtExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AGtExpr__init_agtexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_agtexpr on <var9:AGtExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction703> */
-var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction728> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction703#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction703__action(val* self, val* p0) {
-parser__ReduceAction703__action(self, p0);
+/* method parser#ReduceAction728#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction728__action(val* self, val* p0) {
+parser__ReduceAction728__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction704#action for (self: ReduceAction704, Parser) */
-void parser__ReduceAction704__action(val* self, val* p0) {
+/* method parser#ReduceAction729#action for (self: ReduceAction729, Parser) */
+void parser__ReduceAction729__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var2 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var3 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var5 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwassertnode2 /* var tkwassertnode2: nullable Object */;
-short int var6 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var7 /* : Bool */;
-int cltype8;
-int idtype9;
-val* var_pexprnode4 /* var pexprnode4: nullable Object */;
-short int var10 /* : Bool */;
-int cltype11;
-int idtype12;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var13 /* : Bool */;
-int cltype14;
-int idtype15;
-val* var16 /* : AAssertExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAssertExpr */;
-long var17 /* : Int */;
-long var18 /* : Int */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AGeExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AGeExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var3;
+var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var5;
-var_tkwassertnode2 = var_nodearraylist1;
-/* <var_tkwassertnode2:nullable Object> isa nullable TKwassert */
-cltype = type_nullable_parser_nodes__TKwassert.color;
-idtype = type_nullable_parser_nodes__TKwassert.id;
-if(var_tkwassertnode2 == NULL) {
-var6 = 1;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwassertnode2->type->table_size) {
-var6 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var6 = var_tkwassertnode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var6) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26289);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26741);
+show_backtrace(1);
 }
-var_tidnode3 = var_nodearraylist2;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype8 = type_nullable_parser_nodes__TId.color;
-idtype9 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
-var7 = 1;
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype8 >= var_tidnode3->type->table_size) {
-var7 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var7 = var_tidnode3->type->type_table[cltype8] == idtype9;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var7) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26291);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26743);
+show_backtrace(1);
+}
+var9 = NEW_parser_nodes__AGeExpr(&type_parser_nodes__AGeExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AGeExpr__init_ageexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_ageexpr on <var9:AGeExpr>*/;
+var_pexprnode1 = var9;
+var_node_list = var_pexprnode1;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction729> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
 }
-var_pexprnode4 = var_nodearraylist3;
-/* <var_pexprnode4:nullable Object> isa nullable AExpr */
-cltype11 = type_nullable_parser_nodes__AExpr.color;
-idtype12 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode4 == NULL) {
-var10 = 1;
+/* method parser#ReduceAction729#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction729__action(val* self, val* p0) {
+parser__ReduceAction729__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction730#action for (self: ReduceAction730, Parser) */
+void parser__ReduceAction730__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AGgExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AGgExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype11 >= var_pexprnode4->type->table_size) {
-var10 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var10 = var_pexprnode4->type->type_table[cltype11] == idtype12;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var10) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26293);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26762);
+show_backtrace(1);
 }
-var_pexprnode5 = var_nodearraylist5;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype14 = type_nullable_parser_nodes__AExpr.color;
-idtype15 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var13 = 1;
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype14 >= var_pexprnode5->type->table_size) {
-var13 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var13 = var_pexprnode5->type->type_table[cltype14] == idtype15;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var13) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26295);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26764);
+show_backtrace(1);
 }
-var16 = NEW_parser_nodes__AAssertExpr(&type_parser_nodes__AAssertExpr);
-((void (*)(val*, val*, val*, val*, val*))(var16->class->vft[COLOR_parser_prod__AAssertExpr__init_aassertexpr]))(var16, var_tkwassertnode2, var_tidnode3, var_pexprnode4, var_pexprnode5) /* init_aassertexpr on <var16:AAssertExpr>*/;
-CHECK_NEW_parser_nodes__AAssertExpr(var16);
-var_pexprnode1 = var16;
+var9 = NEW_parser_nodes__AGgExpr(&type_parser_nodes__AGgExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AGgExpr__init_aggexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aggexpr on <var9:AGgExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var17 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction704> */
-var18 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var17) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var18, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction730> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction704#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction704__action(val* self, val* p0) {
-parser__ReduceAction704__action(self, p0);
+/* method parser#ReduceAction730#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction730__action(val* self, val* p0) {
+parser__ReduceAction730__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction705#action for (self: ReduceAction705, Parser) */
-void parser__ReduceAction705__action(val* self, val* p0) {
+/* method parser#ReduceAction731#action for (self: ReduceAction731, Parser) */
+void parser__ReduceAction731__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwassertnode2 /* var tkwassertnode2: nullable Object */;
-short int var3 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode4 /* var pexprnode4: nullable Object */;
-short int var4 /* : Bool */;
-int cltype5;
-int idtype6;
-val* var7 /* : AAssertExpr */;
-val* var8 /* : null */;
-val* var9 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAssertExpr */;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AStarshipExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AStarshipExpr */;
 long var10 /* : Int */;
 long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var2;
-var_tkwassertnode2 = var_nodearraylist1;
-/* <var_tkwassertnode2:nullable Object> isa nullable TKwassert */
-cltype = type_nullable_parser_nodes__TKwassert.color;
-idtype = type_nullable_parser_nodes__TKwassert.id;
-if(var_tkwassertnode2 == NULL) {
-var3 = 1;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwassertnode2->type->table_size) {
-var3 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var3 = var_tkwassertnode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var3) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26314);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26783);
+show_backtrace(1);
 }
-var_pexprnode4 = var_nodearraylist2;
-/* <var_pexprnode4:nullable Object> isa nullable AExpr */
-cltype5 = type_nullable_parser_nodes__AExpr.color;
-idtype6 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode4 == NULL) {
-var4 = 1;
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype5 >= var_pexprnode4->type->table_size) {
-var4 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var4 = var_pexprnode4->type->type_table[cltype5] == idtype6;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var4) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26316);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26785);
+show_backtrace(1);
 }
-var7 = NEW_parser_nodes__AAssertExpr(&type_parser_nodes__AAssertExpr);
-var8 = NULL;
-var9 = NULL;
-((void (*)(val*, val*, val*, val*, val*))(var7->class->vft[COLOR_parser_prod__AAssertExpr__init_aassertexpr]))(var7, var_tkwassertnode2, var8, var_pexprnode4, var9) /* init_aassertexpr on <var7:AAssertExpr>*/;
-CHECK_NEW_parser_nodes__AAssertExpr(var7);
-var_pexprnode1 = var7;
+var9 = NEW_parser_nodes__AStarshipExpr(&type_parser_nodes__AStarshipExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AStarshipExpr__init_astarshipexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_astarshipexpr on <var9:AStarshipExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction705> */
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction731> */
 var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction705#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction705__action(val* self, val* p0) {
-parser__ReduceAction705__action(self, p0);
+/* method parser#ReduceAction731#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction731__action(val* self, val* p0) {
+parser__ReduceAction731__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction706#action for (self: ReduceAction706, Parser) */
-void parser__ReduceAction706__action(val* self, val* p0) {
+/* method parser#ReduceAction732#action for (self: ReduceAction732, Parser) */
+void parser__ReduceAction732__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
 val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwassertnode2 /* var tkwassertnode2: nullable Object */;
-short int var4 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_tidnode3 /* var tidnode3: nullable Object */;
-short int var5 /* : Bool */;
-int cltype6;
-int idtype7;
-val* var_pexprnode4 /* var pexprnode4: nullable Object */;
-short int var8 /* : Bool */;
-int cltype9;
-int idtype10;
-val* var11 /* : AAssertExpr */;
-val* var12 /* : null */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAssertExpr */;
-long var13 /* : Int */;
-long var14 /* : Int */;
+val* var_ptypenode3 /* var ptypenode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AIsaExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIsaExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var_tkwassertnode2 = var_nodearraylist1;
-/* <var_tkwassertnode2:nullable Object> isa nullable TKwassert */
-cltype = type_nullable_parser_nodes__TKwassert.color;
-idtype = type_nullable_parser_nodes__TKwassert.id;
-if(var_tkwassertnode2 == NULL) {
-var4 = 1;
-} else {
-if(cltype >= var_tkwassertnode2->type->table_size) {
-var4 = 0;
-} else {
-var4 = var_tkwassertnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var4) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26336);
-exit(1);
-}
-var_tidnode3 = var_nodearraylist2;
-/* <var_tidnode3:nullable Object> isa nullable TId */
-cltype6 = type_nullable_parser_nodes__TId.color;
-idtype7 = type_nullable_parser_nodes__TId.id;
-if(var_tidnode3 == NULL) {
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
 var5 = 1;
 } else {
-if(cltype6 >= var_tidnode3->type->table_size) {
+if(cltype >= var_pexprnode2->type->table_size) {
 var5 = 0;
 } else {
-var5 = var_tidnode3->type->type_table[cltype6] == idtype7;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26338);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26804);
+show_backtrace(1);
 }
-var_pexprnode4 = var_nodearraylist3;
-/* <var_pexprnode4:nullable Object> isa nullable AExpr */
-cltype9 = type_nullable_parser_nodes__AExpr.color;
-idtype10 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode4 == NULL) {
-var8 = 1;
+var_ptypenode3 = var_nodearraylist4;
+/* <var_ptypenode3:nullable Object> isa nullable AType */
+cltype7 = type_nullable_parser_nodes__AType.color;
+idtype8 = type_nullable_parser_nodes__AType.id;
+if(var_ptypenode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype9 >= var_pexprnode4->type->table_size) {
-var8 = 0;
+if(cltype7 >= var_ptypenode3->type->table_size) {
+var6 = 0;
 } else {
-var8 = var_pexprnode4->type->type_table[cltype9] == idtype10;
+var6 = var_ptypenode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var8) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26340);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26806);
+show_backtrace(1);
 }
-var11 = NEW_parser_nodes__AAssertExpr(&type_parser_nodes__AAssertExpr);
-var12 = NULL;
-((void (*)(val*, val*, val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AAssertExpr__init_aassertexpr]))(var11, var_tkwassertnode2, var_tidnode3, var_pexprnode4, var12) /* init_aassertexpr on <var11:AAssertExpr>*/;
-CHECK_NEW_parser_nodes__AAssertExpr(var11);
-var_pexprnode1 = var11;
+var9 = NEW_parser_nodes__AIsaExpr(&type_parser_nodes__AIsaExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AIsaExpr__init_aisaexpr]))(var9, var_pexprnode2, var_ptypenode3) /* init_aisaexpr on <var9:AIsaExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var13 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction706> */
-var14 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var13) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var14, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction732> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction706#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction706__action(val* self, val* p0) {
-parser__ReduceAction706__action(self, p0);
+/* method parser#ReduceAction732#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction732__action(val* self, val* p0) {
+parser__ReduceAction732__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction707#action for (self: ReduceAction707, Parser) */
-void parser__ReduceAction707__action(val* self, val* p0) {
+/* method parser#ReduceAction734#action for (self: ReduceAction734, Parser) */
+void parser__ReduceAction734__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tidnode1 /* var tidnode1: nullable Object */;
-long var3 /* : Int */;
-long var4 /* : Int */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : APlusExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable APlusExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var2;
-var_tidnode1 = var_nodearraylist1;
-var_node_list = var_tidnode1;
-var3 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction707> */
-var4 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var3) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var4, var_node_list) /* push on <var_p:Parser>*/;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
+} else {
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
+} else {
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var5) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26825);
+show_backtrace(1);
+}
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
+} else {
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
+} else {
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+}
+}
+if (!var6) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26827);
+show_backtrace(1);
+}
+var9 = NEW_parser_nodes__APlusExpr(&type_parser_nodes__APlusExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__APlusExpr__init_aplusexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aplusexpr on <var9:APlusExpr>*/;
+var_pexprnode1 = var9;
+var_node_list = var_pexprnode1;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction734> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction707#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction707__action(val* self, val* p0) {
-parser__ReduceAction707__action(self, p0);
+/* method parser#ReduceAction734#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction734__action(val* self, val* p0) {
+parser__ReduceAction734__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction710#action for (self: ReduceAction710, Parser) */
-void parser__ReduceAction710__action(val* self, val* p0) {
+/* method parser#ReduceAction735#action for (self: ReduceAction735, Parser) */
+void parser__ReduceAction735__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist11 /* var nodearraylist11: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist10 /* var nodearraylist10: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist9 /* var nodearraylist9: nullable Object */;
-val* var4 /* : nullable Object */;
-val* var_nodearraylist8 /* var nodearraylist8: nullable Object */;
-val* var5 /* : nullable Object */;
-val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
-val* var6 /* : nullable Object */;
-val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
-val* var7 /* : nullable Object */;
-val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
-val* var8 /* : nullable Object */;
 val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var9 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var10 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var11 /* : nullable Object */;
+val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwifnode2 /* var tkwifnode2: nullable Object */;
-short int var12 /* : Bool */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var13 /* : Bool */;
-int cltype14;
-int idtype15;
-val* var_tkwthennode4 /* var tkwthennode4: nullable Object */;
-short int var16 /* : Bool */;
-int cltype17;
-int idtype18;
-val* var_pexprnode5 /* var pexprnode5: nullable Object */;
-short int var19 /* : Bool */;
-int cltype20;
-int idtype21;
-val* var_tkwelsenode6 /* var tkwelsenode6: nullable Object */;
-short int var22 /* : Bool */;
-int cltype23;
-int idtype24;
-val* var_pexprnode7 /* var pexprnode7: nullable Object */;
-short int var25 /* : Bool */;
-int cltype26;
-int idtype27;
-val* var28 /* : AIfexprExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AIfexprExpr */;
-long var29 /* : Int */;
-long var30 /* : Int */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AMinusExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AMinusExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist11 = var1;
+var_nodearraylist4 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist10 = var2;
+var_nodearraylist3 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist9 = var3;
+var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist8 = var4;
-var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist7 = var5;
-var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist6 = var6;
-var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist5 = var7;
-var8 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var8;
-var9 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var9;
-var10 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var10;
-var11 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var11;
-var_tkwifnode2 = var_nodearraylist1;
-/* <var_tkwifnode2:nullable Object> isa nullable TKwif */
-cltype = type_nullable_parser_nodes__TKwif.color;
-idtype = type_nullable_parser_nodes__TKwif.id;
-if(var_tkwifnode2 == NULL) {
-var12 = 1;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype >= var_tkwifnode2->type->table_size) {
-var12 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var12 = var_tkwifnode2->type->type_table[cltype] == idtype;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var12) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26380);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26846);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist3;
+var_pexprnode3 = var_nodearraylist4;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype14 = type_nullable_parser_nodes__AExpr.color;
-idtype15 = type_nullable_parser_nodes__AExpr.id;
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var13 = 1;
-} else {
-if(cltype14 >= var_pexprnode3->type->table_size) {
-var13 = 0;
-} else {
-var13 = var_pexprnode3->type->type_table[cltype14] == idtype15;
-}
-}
-if (!var13) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26382);
-exit(1);
-}
-var_tkwthennode4 = var_nodearraylist5;
-/* <var_tkwthennode4:nullable Object> isa nullable TKwthen */
-cltype17 = type_nullable_parser_nodes__TKwthen.color;
-idtype18 = type_nullable_parser_nodes__TKwthen.id;
-if(var_tkwthennode4 == NULL) {
-var16 = 1;
+var6 = 1;
 } else {
-if(cltype17 >= var_tkwthennode4->type->table_size) {
-var16 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var16 = var_tkwthennode4->type->type_table[cltype17] == idtype18;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var16) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26384);
-exit(1);
-}
-var_pexprnode5 = var_nodearraylist7;
-/* <var_pexprnode5:nullable Object> isa nullable AExpr */
-cltype20 = type_nullable_parser_nodes__AExpr.color;
-idtype21 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode5 == NULL) {
-var19 = 1;
-} else {
-if(cltype20 >= var_pexprnode5->type->table_size) {
-var19 = 0;
-} else {
-var19 = var_pexprnode5->type->type_table[cltype20] == idtype21;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26848);
+show_backtrace(1);
 }
+var9 = NEW_parser_nodes__AMinusExpr(&type_parser_nodes__AMinusExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AMinusExpr__init_aminusexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aminusexpr on <var9:AMinusExpr>*/;
+var_pexprnode1 = var9;
+var_node_list = var_pexprnode1;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction735> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
 }
-if (!var19) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26386);
-exit(1);
+/* method parser#ReduceAction735#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction735__action(val* self, val* p0) {
+parser__ReduceAction735__action(self, p0);
+RET_LABEL:;
 }
-var_tkwelsenode6 = var_nodearraylist9;
-/* <var_tkwelsenode6:nullable Object> isa nullable TKwelse */
-cltype23 = type_nullable_parser_nodes__TKwelse.color;
-idtype24 = type_nullable_parser_nodes__TKwelse.id;
-if(var_tkwelsenode6 == NULL) {
-var22 = 1;
+/* method parser#ReduceAction737#action for (self: ReduceAction737, Parser) */
+void parser__ReduceAction737__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+short int var5 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var9 /* : AStarExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AStarExpr */;
+long var10 /* : Int */;
+long var11 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_pexprnode2 = var_nodearraylist1;
+/* <var_pexprnode2:nullable Object> isa nullable AExpr */
+cltype = type_nullable_parser_nodes__AExpr.color;
+idtype = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode2 == NULL) {
+var5 = 1;
 } else {
-if(cltype23 >= var_tkwelsenode6->type->table_size) {
-var22 = 0;
+if(cltype >= var_pexprnode2->type->table_size) {
+var5 = 0;
 } else {
-var22 = var_tkwelsenode6->type->type_table[cltype23] == idtype24;
+var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var22) {
+if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26388);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26867);
+show_backtrace(1);
 }
-var_pexprnode7 = var_nodearraylist11;
-/* <var_pexprnode7:nullable Object> isa nullable AExpr */
-cltype26 = type_nullable_parser_nodes__AExpr.color;
-idtype27 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode7 == NULL) {
-var25 = 1;
+var_pexprnode3 = var_nodearraylist4;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype7 = type_nullable_parser_nodes__AExpr.color;
+idtype8 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var6 = 1;
 } else {
-if(cltype26 >= var_pexprnode7->type->table_size) {
-var25 = 0;
+if(cltype7 >= var_pexprnode3->type->table_size) {
+var6 = 0;
 } else {
-var25 = var_pexprnode7->type->type_table[cltype26] == idtype27;
+var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 }
-if (!var25) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26390);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26869);
+show_backtrace(1);
 }
-var28 = NEW_parser_nodes__AIfexprExpr(&type_parser_nodes__AIfexprExpr);
-((void (*)(val*, val*, val*, val*, val*, val*, val*))(var28->class->vft[COLOR_parser_prod__AIfexprExpr__init_aifexprexpr]))(var28, var_tkwifnode2, var_pexprnode3, var_tkwthennode4, var_pexprnode5, var_tkwelsenode6, var_pexprnode7) /* init_aifexprexpr on <var28:AIfexprExpr>*/;
-CHECK_NEW_parser_nodes__AIfexprExpr(var28);
-var_pexprnode1 = var28;
+var9 = NEW_parser_nodes__AStarExpr(&type_parser_nodes__AStarExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AStarExpr__init_astarexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_astarexpr on <var9:AStarExpr>*/;
+var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var29 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction710> */
-var30 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var29) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var30, var_node_list) /* push on <var_p:Parser>*/;
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction737> */
+var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction710#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction710__action(val* self, val* p0) {
-parser__ReduceAction710__action(self, p0);
+/* method parser#ReduceAction737#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction737__action(val* self, val* p0) {
+parser__ReduceAction737__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction712#action for (self: ReduceAction712, Parser) */
-void parser__ReduceAction712__action(val* self, val* p0) {
+/* method parser#ReduceAction738#action for (self: ReduceAction738, Parser) */
+void parser__ReduceAction738__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -8884,8 +8463,8 @@ val* var_pexprnode3 /* var pexprnode3: nullable Object */;
 short int var6 /* : Bool */;
 int cltype7;
 int idtype8;
-val* var9 /* : AOrExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AOrExpr */;
+val* var9 /* : ASlashExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable ASlashExpr */;
 long var10 /* : Int */;
 long var11 /* : Int */;
 var_p = p0;
@@ -8914,8 +8493,8 @@ var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26413);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26888);
+show_backtrace(1);
 }
 var_pexprnode3 = var_nodearraylist4;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
@@ -8932,26 +8511,25 @@ var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26415);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26890);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__AOrExpr(&type_parser_nodes__AOrExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AOrExpr__init_aorexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aorexpr on <var9:AOrExpr>*/;
-CHECK_NEW_parser_nodes__AOrExpr(var9);
+var9 = NEW_parser_nodes__ASlashExpr(&type_parser_nodes__ASlashExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ASlashExpr__init_aslashexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aslashexpr on <var9:ASlashExpr>*/;
 var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction712> */
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction738> */
 var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction712#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction712__action(val* self, val* p0) {
-parser__ReduceAction712__action(self, p0);
+/* method parser#ReduceAction738#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction738__action(val* self, val* p0) {
+parser__ReduceAction738__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction713#action for (self: ReduceAction713, Parser) */
-void parser__ReduceAction713__action(val* self, val* p0) {
+/* method parser#ReduceAction739#action for (self: ReduceAction739, Parser) */
+void parser__ReduceAction739__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -8971,8 +8549,8 @@ val* var_pexprnode3 /* var pexprnode3: nullable Object */;
 short int var6 /* : Bool */;
 int cltype7;
 int idtype8;
-val* var9 /* : AAndExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AAndExpr */;
+val* var9 /* : APercentExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable APercentExpr */;
 long var10 /* : Int */;
 long var11 /* : Int */;
 var_p = p0;
@@ -9001,8 +8579,8 @@ var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26434);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26909);
+show_backtrace(1);
 }
 var_pexprnode3 = var_nodearraylist4;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
@@ -9019,26 +8597,299 @@ var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26436);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26911);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__AAndExpr(&type_parser_nodes__AAndExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AAndExpr__init_aandexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aandexpr on <var9:AAndExpr>*/;
-CHECK_NEW_parser_nodes__AAndExpr(var9);
+var9 = NEW_parser_nodes__APercentExpr(&type_parser_nodes__APercentExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__APercentExpr__init_apercentexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_apercentexpr on <var9:APercentExpr>*/;
 var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction713> */
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction739> */
 var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction713#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction713__action(val* self, val* p0) {
-parser__ReduceAction713__action(self, p0);
+/* method parser#ReduceAction739#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction739__action(val* self, val* p0) {
+parser__ReduceAction739__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction741#action for (self: ReduceAction741, Parser) */
+void parser__ReduceAction741__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tminusnode2 /* var tminusnode2: nullable Object */;
+short int var4 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var5 /* : Bool */;
+int cltype6;
+int idtype7;
+val* var8 /* : AUminusExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AUminusExpr */;
+long var9 /* : Int */;
+long var10 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var3;
+var_tminusnode2 = var_nodearraylist1;
+/* <var_tminusnode2:nullable Object> isa nullable TMinus */
+cltype = type_nullable_parser_nodes__TMinus.color;
+idtype = type_nullable_parser_nodes__TMinus.id;
+if(var_tminusnode2 == NULL) {
+var4 = 1;
+} else {
+if(cltype >= var_tminusnode2->type->table_size) {
+var4 = 0;
+} else {
+var4 = var_tminusnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var4) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26929);
+show_backtrace(1);
+}
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype6 = type_nullable_parser_nodes__AExpr.color;
+idtype7 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var5 = 1;
+} else {
+if(cltype6 >= var_pexprnode3->type->table_size) {
+var5 = 0;
+} else {
+var5 = var_pexprnode3->type->type_table[cltype6] == idtype7;
+}
+}
+if (!var5) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26931);
+show_backtrace(1);
+}
+var8 = NEW_parser_nodes__AUminusExpr(&type_parser_nodes__AUminusExpr);
+((void (*)(val*, val*, val*))(var8->class->vft[COLOR_parser_prod__AUminusExpr__init_auminusexpr]))(var8, var_tminusnode2, var_pexprnode3) /* init_auminusexpr on <var8:AUminusExpr>*/;
+var_pexprnode1 = var8;
+var_node_list = var_pexprnode1;
+var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction741> */
+var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction741#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction741__action(val* self, val* p0) {
+parser__ReduceAction741__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction742#action for (self: ReduceAction742, Parser) */
+void parser__ReduceAction742__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tkwoncenode2 /* var tkwoncenode2: nullable Object */;
+short int var4 /* : Bool */;
+int cltype;
+int idtype;
+val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+short int var5 /* : Bool */;
+int cltype6;
+int idtype7;
+val* var8 /* : AOnceExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AOnceExpr */;
+long var9 /* : Int */;
+long var10 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var3;
+var_tkwoncenode2 = var_nodearraylist1;
+/* <var_tkwoncenode2:nullable Object> isa nullable TKwonce */
+cltype = type_nullable_parser_nodes__TKwonce.color;
+idtype = type_nullable_parser_nodes__TKwonce.id;
+if(var_tkwoncenode2 == NULL) {
+var4 = 1;
+} else {
+if(cltype >= var_tkwoncenode2->type->table_size) {
+var4 = 0;
+} else {
+var4 = var_tkwoncenode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var4) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26949);
+show_backtrace(1);
+}
+var_pexprnode3 = var_nodearraylist3;
+/* <var_pexprnode3:nullable Object> isa nullable AExpr */
+cltype6 = type_nullable_parser_nodes__AExpr.color;
+idtype7 = type_nullable_parser_nodes__AExpr.id;
+if(var_pexprnode3 == NULL) {
+var5 = 1;
+} else {
+if(cltype6 >= var_pexprnode3->type->table_size) {
+var5 = 0;
+} else {
+var5 = var_pexprnode3->type->type_table[cltype6] == idtype7;
+}
+}
+if (!var5) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26951);
+show_backtrace(1);
+}
+var8 = NEW_parser_nodes__AOnceExpr(&type_parser_nodes__AOnceExpr);
+((void (*)(val*, val*, val*))(var8->class->vft[COLOR_parser_prod__AOnceExpr__init_aonceexpr]))(var8, var_tkwoncenode2, var_pexprnode3) /* init_aonceexpr on <var8:AOnceExpr>*/;
+var_pexprnode1 = var8;
+var_node_list = var_pexprnode1;
+var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction742> */
+var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction742#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction742__action(val* self, val* p0) {
+parser__ReduceAction742__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction744#action for (self: ReduceAction744, Parser) */
+void parser__ReduceAction744__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var3 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tkwnewnode2 /* var tkwnewnode2: nullable Object */;
+short int var5 /* : Bool */;
+int cltype;
+int idtype;
+val* var_ptypenode3 /* var ptypenode3: nullable Object */;
+short int var6 /* : Bool */;
+int cltype7;
+int idtype8;
+val* var_pexprsnode5 /* var pexprsnode5: nullable Object */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var12 /* : ANewExpr */;
+val* var13 /* : null */;
+val* var_pexprnode1 /* var pexprnode1: nullable ANewExpr */;
+long var14 /* : Int */;
+long var15 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var2;
+var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var4;
+var_tkwnewnode2 = var_nodearraylist1;
+/* <var_tkwnewnode2:nullable Object> isa nullable TKwnew */
+cltype = type_nullable_parser_nodes__TKwnew.color;
+idtype = type_nullable_parser_nodes__TKwnew.id;
+if(var_tkwnewnode2 == NULL) {
+var5 = 1;
+} else {
+if(cltype >= var_tkwnewnode2->type->table_size) {
+var5 = 0;
+} else {
+var5 = var_tkwnewnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var5) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26970);
+show_backtrace(1);
+}
+var_ptypenode3 = var_nodearraylist3;
+/* <var_ptypenode3:nullable Object> isa nullable AType */
+cltype7 = type_nullable_parser_nodes__AType.color;
+idtype8 = type_nullable_parser_nodes__AType.id;
+if(var_ptypenode3 == NULL) {
+var6 = 1;
+} else {
+if(cltype7 >= var_ptypenode3->type->table_size) {
+var6 = 0;
+} else {
+var6 = var_ptypenode3->type->type_table[cltype7] == idtype8;
+}
+}
+if (!var6) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26972);
+show_backtrace(1);
+}
+var_pexprsnode5 = var_nodearraylist4;
+/* <var_pexprsnode5:nullable Object> isa nullable AExprs */
+cltype10 = type_nullable_parser_nodes__AExprs.color;
+idtype11 = type_nullable_parser_nodes__AExprs.id;
+if(var_pexprsnode5 == NULL) {
+var9 = 1;
+} else {
+if(cltype10 >= var_pexprsnode5->type->table_size) {
+var9 = 0;
+} else {
+var9 = var_pexprsnode5->type->type_table[cltype10] == idtype11;
+}
+}
+if (!var9) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26974);
+show_backtrace(1);
+}
+var12 = NEW_parser_nodes__ANewExpr(&type_parser_nodes__ANewExpr);
+var13 = NULL;
+((void (*)(val*, val*, val*, val*, val*))(var12->class->vft[COLOR_parser_prod__ANewExpr__init_anewexpr]))(var12, var_tkwnewnode2, var_ptypenode3, var13, var_pexprsnode5) /* init_anewexpr on <var12:ANewExpr>*/;
+var_pexprnode1 = var12;
+var_node_list = var_pexprnode1;
+var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction744> */
+var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction744#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction744__action(val* self, val* p0) {
+parser__ReduceAction744__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction714#action for (self: ReduceAction714, Parser) */
-void parser__ReduceAction714__action(val* self, val* p0) {
+/* method parser#ReduceAction745#action for (self: ReduceAction745, Parser) */
+void parser__ReduceAction745__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -9052,7 +8903,7 @@ val* var4 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var5 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+val* var_tkwissetnode2 /* var tkwissetnode2: nullable Object */;
 short int var6 /* : Bool */;
 int cltype;
 int idtype;
@@ -9060,10 +8911,14 @@ val* var_pexprnode3 /* var pexprnode3: nullable Object */;
 short int var7 /* : Bool */;
 int cltype8;
 int idtype9;
-val* var10 /* : AOrElseExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AOrElseExpr */;
-long var11 /* : Int */;
-long var12 /* : Int */;
+val* var_tattridnode4 /* var tattridnode4: nullable Object */;
+short int var10 /* : Bool */;
+int cltype11;
+int idtype12;
+val* var13 /* : AIssetAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIssetAttrExpr */;
+long var14 /* : Int */;
+long var15 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
@@ -9077,25 +8932,25 @@ var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist2 = var4;
 var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
 var_nodearraylist1 = var5;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
+var_tkwissetnode2 = var_nodearraylist1;
+/* <var_tkwissetnode2:nullable Object> isa nullable TKwisset */
+cltype = type_nullable_parser_nodes__TKwisset.color;
+idtype = type_nullable_parser_nodes__TKwisset.id;
+if(var_tkwissetnode2 == NULL) {
 var6 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
+if(cltype >= var_tkwissetnode2->type->table_size) {
 var6 = 0;
 } else {
-var6 = var_pexprnode2->type->type_table[cltype] == idtype;
+var6 = var_tkwissetnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26456);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26996);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist5;
+var_pexprnode3 = var_nodearraylist2;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
 cltype8 = type_nullable_parser_nodes__AExpr.color;
 idtype9 = type_nullable_parser_nodes__AExpr.id;
@@ -9110,283 +8965,449 @@ var7 = var_pexprnode3->type->type_table[cltype8] == idtype9;
 }
 if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26458);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26998);
+show_backtrace(1);
 }
-var10 = NEW_parser_nodes__AOrElseExpr(&type_parser_nodes__AOrElseExpr);
-((void (*)(val*, val*, val*))(var10->class->vft[COLOR_parser_prod__AOrElseExpr__init_aorelseexpr]))(var10, var_pexprnode2, var_pexprnode3) /* init_aorelseexpr on <var10:AOrElseExpr>*/;
-CHECK_NEW_parser_nodes__AOrElseExpr(var10);
-var_pexprnode1 = var10;
+var_tattridnode4 = var_nodearraylist5;
+/* <var_tattridnode4:nullable Object> isa nullable TAttrid */
+cltype11 = type_nullable_parser_nodes__TAttrid.color;
+idtype12 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode4 == NULL) {
+var10 = 1;
+} else {
+if(cltype11 >= var_tattridnode4->type->table_size) {
+var10 = 0;
+} else {
+var10 = var_tattridnode4->type->type_table[cltype11] == idtype12;
+}
+}
+if (!var10) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27000);
+show_backtrace(1);
+}
+var13 = NEW_parser_nodes__AIssetAttrExpr(&type_parser_nodes__AIssetAttrExpr);
+((void (*)(val*, val*, val*, val*))(var13->class->vft[COLOR_parser_prod__AIssetAttrExpr__init_aissetattrexpr]))(var13, var_tkwissetnode2, var_pexprnode3, var_tattridnode4) /* init_aissetattrexpr on <var13:AIssetAttrExpr>*/;
+var_pexprnode1 = var13;
 var_node_list = var_pexprnode1;
-var11 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction714> */
-var12 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var11) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var12, var_node_list) /* push on <var_p:Parser>*/;
+var14 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction745> */
+var15 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var14) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var15, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction714#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction714__action(val* self, val* p0) {
-parser__ReduceAction714__action(self, p0);
+/* method parser#ReduceAction745#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction745__action(val* self, val* p0) {
+parser__ReduceAction745__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction715#action for (self: ReduceAction715, Parser) */
-void parser__ReduceAction715__action(val* self, val* p0) {
+/* method parser#ReduceAction746#action for (self: ReduceAction746, Parser) */
+void parser__ReduceAction746__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
+val* var_tkwissetnode2 /* var tkwissetnode2: nullable Object */;
+short int var3 /* : Bool */;
+int cltype;
+int idtype;
+val* var4 /* : AImplicitSelfExpr */;
+val* var_pexprnode3 /* var pexprnode3: nullable AImplicitSelfExpr */;
+val* var_tattridnode4 /* var tattridnode4: nullable Object */;
+short int var5 /* : Bool */;
+int cltype6;
+int idtype7;
+val* var8 /* : AIssetAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIssetAttrExpr */;
+long var9 /* : Int */;
+long var10 /* : Int */;
+var_p = p0;
+var = NULL;
+var_node_list = var;
+var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var1;
+var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var2;
+var_tkwissetnode2 = var_nodearraylist1;
+/* <var_tkwissetnode2:nullable Object> isa nullable TKwisset */
+cltype = type_nullable_parser_nodes__TKwisset.color;
+idtype = type_nullable_parser_nodes__TKwisset.id;
+if(var_tkwissetnode2 == NULL) {
+var3 = 1;
+} else {
+if(cltype >= var_tkwissetnode2->type->table_size) {
+var3 = 0;
+} else {
+var3 = var_tkwissetnode2->type->type_table[cltype] == idtype;
+}
+}
+if (!var3) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27018);
+show_backtrace(1);
+}
+var4 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var4->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var4) /* init_aimplicitselfexpr on <var4:AImplicitSelfExpr>*/;
+var_pexprnode3 = var4;
+var_tattridnode4 = var_nodearraylist2;
+/* <var_tattridnode4:nullable Object> isa nullable TAttrid */
+cltype6 = type_nullable_parser_nodes__TAttrid.color;
+idtype7 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode4 == NULL) {
+var5 = 1;
+} else {
+if(cltype6 >= var_tattridnode4->type->table_size) {
+var5 = 0;
+} else {
+var5 = var_tattridnode4->type->type_table[cltype6] == idtype7;
+}
+}
+if (!var5) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27021);
+show_backtrace(1);
+}
+var8 = NEW_parser_nodes__AIssetAttrExpr(&type_parser_nodes__AIssetAttrExpr);
+((void (*)(val*, val*, val*, val*))(var8->class->vft[COLOR_parser_prod__AIssetAttrExpr__init_aissetattrexpr]))(var8, var_tkwissetnode2, var_pexprnode3, var_tattridnode4) /* init_aissetattrexpr on <var8:AIssetAttrExpr>*/;
+var_pexprnode1 = var8;
+var_node_list = var_pexprnode1;
+var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction746> */
+var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
+RET_LABEL:;
+}
+/* method parser#ReduceAction746#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction746__action(val* self, val* p0) {
+parser__ReduceAction746__action(self, p0);
+RET_LABEL:;
+}
+/* method parser#ReduceAction747#action for (self: ReduceAction747, Parser) */
+void parser__ReduceAction747__action(val* self, val* p0) {
+val* var_p /* var p: Parser */;
+val* var /* : null */;
+val* var_node_list /* var node_list: nullable Object */;
+val* var1 /* : nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
+val* var2 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var4 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var5 /* : Bool */;
+val* var_tkwissetnode2 /* var tkwissetnode2: nullable Object */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var9 /* : AImpliesExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AImpliesExpr */;
-long var10 /* : Int */;
-long var11 /* : Int */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var_tattridnode4 /* var tattridnode4: nullable Object */;
+short int var11 /* : Bool */;
+int cltype12;
+int idtype13;
+val* var14 /* : AIssetAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIssetAttrExpr */;
+long var15 /* : Int */;
+long var16 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist6 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist5 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
+var_nodearraylist4 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var5 = 1;
+var_nodearraylist3 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var6;
+var_tkwissetnode2 = var_nodearraylist1;
+/* <var_tkwissetnode2:nullable Object> isa nullable TKwisset */
+cltype = type_nullable_parser_nodes__TKwisset.color;
+idtype = type_nullable_parser_nodes__TKwisset.id;
+if(var_tkwissetnode2 == NULL) {
+var7 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var5 = 0;
+if(cltype >= var_tkwissetnode2->type->table_size) {
+var7 = 0;
 } else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
+var7 = var_tkwissetnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var5) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26477);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27043);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist4;
+var_pexprnode3 = var_nodearraylist2;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
+cltype9 = type_nullable_parser_nodes__AExpr.color;
+idtype10 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var6 = 1;
+var8 = 1;
 } else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
-var6 = 0;
+if(cltype9 >= var_pexprnode3->type->table_size) {
+var8 = 0;
 } else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+var8 = var_pexprnode3->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var6) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26479);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27045);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__AImpliesExpr(&type_parser_nodes__AImpliesExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AImpliesExpr__init_aimpliesexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aimpliesexpr on <var9:AImpliesExpr>*/;
-CHECK_NEW_parser_nodes__AImpliesExpr(var9);
-var_pexprnode1 = var9;
+var_tattridnode4 = var_nodearraylist6;
+/* <var_tattridnode4:nullable Object> isa nullable TAttrid */
+cltype12 = type_nullable_parser_nodes__TAttrid.color;
+idtype13 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode4 == NULL) {
+var11 = 1;
+} else {
+if(cltype12 >= var_tattridnode4->type->table_size) {
+var11 = 0;
+} else {
+var11 = var_tattridnode4->type->type_table[cltype12] == idtype13;
+}
+}
+if (!var11) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27047);
+show_backtrace(1);
+}
+var14 = NEW_parser_nodes__AIssetAttrExpr(&type_parser_nodes__AIssetAttrExpr);
+((void (*)(val*, val*, val*, val*))(var14->class->vft[COLOR_parser_prod__AIssetAttrExpr__init_aissetattrexpr]))(var14, var_tkwissetnode2, var_pexprnode3, var_tattridnode4) /* init_aissetattrexpr on <var14:AIssetAttrExpr>*/;
+var_pexprnode1 = var14;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction715> */
-var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+var15 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction747> */
+var16 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var15) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var16, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction715#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction715__action(val* self, val* p0) {
-parser__ReduceAction715__action(self, p0);
+/* method parser#ReduceAction747#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction747__action(val* self, val* p0) {
+parser__ReduceAction747__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction717#action for (self: ReduceAction717, Parser) */
-void parser__ReduceAction717__action(val* self, val* p0) {
+/* method parser#ReduceAction748#action for (self: ReduceAction748, Parser) */
+void parser__ReduceAction748__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist7 /* var nodearraylist7: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var3 /* : nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
+val* var4 /* : nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var6 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var7 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_tkwnotnode2 /* var tkwnotnode2: nullable Object */;
-short int var4 /* : Bool */;
+val* var_tkwissetnode2 /* var tkwissetnode2: nullable Object */;
+short int var8 /* : Bool */;
 int cltype;
 int idtype;
 val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var5 /* : Bool */;
-int cltype6;
-int idtype7;
-val* var8 /* : ANotExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ANotExpr */;
-long var9 /* : Int */;
-long var10 /* : Int */;
+short int var9 /* : Bool */;
+int cltype10;
+int idtype11;
+val* var_tattridnode4 /* var tattridnode4: nullable Object */;
+short int var12 /* : Bool */;
+int cltype13;
+int idtype14;
+val* var15 /* : AIssetAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIssetAttrExpr */;
+long var16 /* : Int */;
+long var17 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var1;
+var_nodearraylist7 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var2;
+var_nodearraylist6 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var3;
-var_tkwnotnode2 = var_nodearraylist1;
-/* <var_tkwnotnode2:nullable Object> isa nullable TKwnot */
-cltype = type_nullable_parser_nodes__TKwnot.color;
-idtype = type_nullable_parser_nodes__TKwnot.id;
-if(var_tkwnotnode2 == NULL) {
-var4 = 1;
+var_nodearraylist5 = var3;
+var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist4 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist3 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var6;
+var7 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var7;
+var_tkwissetnode2 = var_nodearraylist1;
+/* <var_tkwissetnode2:nullable Object> isa nullable TKwisset */
+cltype = type_nullable_parser_nodes__TKwisset.color;
+idtype = type_nullable_parser_nodes__TKwisset.id;
+if(var_tkwissetnode2 == NULL) {
+var8 = 1;
 } else {
-if(cltype >= var_tkwnotnode2->type->table_size) {
-var4 = 0;
+if(cltype >= var_tkwissetnode2->type->table_size) {
+var8 = 0;
 } else {
-var4 = var_tkwnotnode2->type->type_table[cltype] == idtype;
+var8 = var_tkwissetnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var4) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26497);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27070);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist3;
+var_pexprnode3 = var_nodearraylist2;
 /* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype6 = type_nullable_parser_nodes__AExpr.color;
-idtype7 = type_nullable_parser_nodes__AExpr.id;
+cltype10 = type_nullable_parser_nodes__AExpr.color;
+idtype11 = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode3 == NULL) {
-var5 = 1;
+var9 = 1;
+} else {
+if(cltype10 >= var_pexprnode3->type->table_size) {
+var9 = 0;
+} else {
+var9 = var_pexprnode3->type->type_table[cltype10] == idtype11;
+}
+}
+if (!var9) {
+fprintf(stderr, "Runtime error: %s", "Assert failed");
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27072);
+show_backtrace(1);
+}
+var_tattridnode4 = var_nodearraylist7;
+/* <var_tattridnode4:nullable Object> isa nullable TAttrid */
+cltype13 = type_nullable_parser_nodes__TAttrid.color;
+idtype14 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode4 == NULL) {
+var12 = 1;
 } else {
-if(cltype6 >= var_pexprnode3->type->table_size) {
-var5 = 0;
+if(cltype13 >= var_tattridnode4->type->table_size) {
+var12 = 0;
 } else {
-var5 = var_pexprnode3->type->type_table[cltype6] == idtype7;
+var12 = var_tattridnode4->type->type_table[cltype13] == idtype14;
 }
 }
-if (!var5) {
+if (!var12) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26499);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27074);
+show_backtrace(1);
 }
-var8 = NEW_parser_nodes__ANotExpr(&type_parser_nodes__ANotExpr);
-((void (*)(val*, val*, val*))(var8->class->vft[COLOR_parser_prod__ANotExpr__init_anotexpr]))(var8, var_tkwnotnode2, var_pexprnode3) /* init_anotexpr on <var8:ANotExpr>*/;
-CHECK_NEW_parser_nodes__ANotExpr(var8);
-var_pexprnode1 = var8;
+var15 = NEW_parser_nodes__AIssetAttrExpr(&type_parser_nodes__AIssetAttrExpr);
+((void (*)(val*, val*, val*, val*))(var15->class->vft[COLOR_parser_prod__AIssetAttrExpr__init_aissetattrexpr]))(var15, var_tkwissetnode2, var_pexprnode3, var_tattridnode4) /* init_aissetattrexpr on <var15:AIssetAttrExpr>*/;
+var_pexprnode1 = var15;
 var_node_list = var_pexprnode1;
-var9 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction717> */
-var10 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var9) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var10, var_node_list) /* push on <var_p:Parser>*/;
+var16 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction748> */
+var17 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var16) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var17, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction717#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction717__action(val* self, val* p0) {
-parser__ReduceAction717__action(self, p0);
+/* method parser#ReduceAction748#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction748__action(val* self, val* p0) {
+parser__ReduceAction748__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction719#action for (self: ReduceAction719, Parser) */
-void parser__ReduceAction719__action(val* self, val* p0) {
+/* method parser#ReduceAction750#action for (self: ReduceAction750, Parser) */
+void parser__ReduceAction750__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var3 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var5 /* : Bool */;
+val* var_tkwissetnode2 /* var tkwissetnode2: nullable Object */;
+short int var4 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+val* var5 /* : AImplicitSelfExpr */;
+val* var_pexprnode3 /* var pexprnode3: nullable AImplicitSelfExpr */;
+val* var_tattridnode4 /* var tattridnode4: nullable Object */;
 short int var6 /* : Bool */;
 int cltype7;
 int idtype8;
-val* var9 /* : AEqExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AEqExpr */;
+val* var9 /* : AIssetAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIssetAttrExpr */;
 long var10 /* : Int */;
 long var11 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist3 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist2 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var5 = 1;
+var_nodearraylist1 = var3;
+var_tkwissetnode2 = var_nodearraylist1;
+/* <var_tkwissetnode2:nullable Object> isa nullable TKwisset */
+cltype = type_nullable_parser_nodes__TKwisset.color;
+idtype = type_nullable_parser_nodes__TKwisset.id;
+if(var_tkwissetnode2 == NULL) {
+var4 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var5 = 0;
+if(cltype >= var_tkwissetnode2->type->table_size) {
+var4 = 0;
 } else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
+var4 = var_tkwissetnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var5) {
+if (!var4) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26518);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27093);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist4;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
+var5 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var5->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var5) /* init_aimplicitselfexpr on <var5:AImplicitSelfExpr>*/;
+var_pexprnode3 = var5;
+var_tattridnode4 = var_nodearraylist3;
+/* <var_tattridnode4:nullable Object> isa nullable TAttrid */
+cltype7 = type_nullable_parser_nodes__TAttrid.color;
+idtype8 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode4 == NULL) {
 var6 = 1;
 } else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
+if(cltype7 >= var_tattridnode4->type->table_size) {
 var6 = 0;
 } else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+var6 = var_tattridnode4->type->type_table[cltype7] == idtype8;
 }
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26520);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27096);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__AEqExpr(&type_parser_nodes__AEqExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AEqExpr__init_aeqexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aeqexpr on <var9:AEqExpr>*/;
-CHECK_NEW_parser_nodes__AEqExpr(var9);
+var9 = NEW_parser_nodes__AIssetAttrExpr(&type_parser_nodes__AIssetAttrExpr);
+((void (*)(val*, val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AIssetAttrExpr__init_aissetattrexpr]))(var9, var_tkwissetnode2, var_pexprnode3, var_tattridnode4) /* init_aissetattrexpr on <var9:AIssetAttrExpr>*/;
 var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction719> */
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction750> */
 var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction719#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction719__action(val* self, val* p0) {
-parser__ReduceAction719__action(self, p0);
+/* method parser#ReduceAction750#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction750__action(val* self, val* p0) {
+parser__ReduceAction750__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction720#action for (self: ReduceAction720, Parser) */
-void parser__ReduceAction720__action(val* self, val* p0) {
+/* method parser#ReduceAction751#action for (self: ReduceAction751, Parser) */
+void parser__ReduceAction751__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -9398,18 +9419,20 @@ val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
 val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+val* var_tkwissetnode2 /* var tkwissetnode2: nullable Object */;
 short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var9 /* : ANeExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ANeExpr */;
-long var10 /* : Int */;
+val* var6 /* : AImplicitSelfExpr */;
+val* var_pexprnode3 /* var pexprnode3: nullable AImplicitSelfExpr */;
+val* var_tattridnode4 /* var tattridnode4: nullable Object */;
+short int var7 /* : Bool */;
+int cltype8;
+int idtype9;
+val* var10 /* : AIssetAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AIssetAttrExpr */;
 long var11 /* : Int */;
+long var12 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
@@ -9421,59 +9444,61 @@ var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /
 var_nodearraylist2 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
 var_nodearraylist1 = var4;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
+var_tkwissetnode2 = var_nodearraylist1;
+/* <var_tkwissetnode2:nullable Object> isa nullable TKwisset */
+cltype = type_nullable_parser_nodes__TKwisset.color;
+idtype = type_nullable_parser_nodes__TKwisset.id;
+if(var_tkwissetnode2 == NULL) {
 var5 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
+if(cltype >= var_tkwissetnode2->type->table_size) {
 var5 = 0;
 } else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
+var5 = var_tkwissetnode2->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26539);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27116);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist4;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var6 = 1;
+var6 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var6->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var6) /* init_aimplicitselfexpr on <var6:AImplicitSelfExpr>*/;
+var_pexprnode3 = var6;
+var_tattridnode4 = var_nodearraylist4;
+/* <var_tattridnode4:nullable Object> isa nullable TAttrid */
+cltype8 = type_nullable_parser_nodes__TAttrid.color;
+idtype9 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode4 == NULL) {
+var7 = 1;
 } else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
-var6 = 0;
+if(cltype8 >= var_tattridnode4->type->table_size) {
+var7 = 0;
 } else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+var7 = var_tattridnode4->type->type_table[cltype8] == idtype9;
 }
 }
-if (!var6) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26541);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27119);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__ANeExpr(&type_parser_nodes__ANeExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ANeExpr__init_aneexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aneexpr on <var9:ANeExpr>*/;
-CHECK_NEW_parser_nodes__ANeExpr(var9);
-var_pexprnode1 = var9;
+var10 = NEW_parser_nodes__AIssetAttrExpr(&type_parser_nodes__AIssetAttrExpr);
+((void (*)(val*, val*, val*, val*))(var10->class->vft[COLOR_parser_prod__AIssetAttrExpr__init_aissetattrexpr]))(var10, var_tkwissetnode2, var_pexprnode3, var_tattridnode4) /* init_aissetattrexpr on <var10:AIssetAttrExpr>*/;
+var_pexprnode1 = var10;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction720> */
-var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+var11 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction751> */
+var12 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var11) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var12, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction720#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction720__action(val* self, val* p0) {
-parser__ReduceAction720__action(self, p0);
+/* method parser#ReduceAction751#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction751__action(val* self, val* p0) {
+parser__ReduceAction751__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction721#action for (self: ReduceAction721, Parser) */
-void parser__ReduceAction721__action(val* self, val* p0) {
+/* method parser#ReduceAction753#action for (self: ReduceAction753, Parser) */
+void parser__ReduceAction753__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
@@ -9489,12 +9514,12 @@ val* var_pexprnode2 /* var pexprnode2: nullable Object */;
 short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
 short int var6 /* : Bool */;
 int cltype7;
 int idtype8;
-val* var9 /* : ALtExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ALtExpr */;
+val* var9 /* : AAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrExpr */;
 long var10 /* : Int */;
 long var11 /* : Int */;
 var_p = p0;
@@ -9523,474 +9548,405 @@ var5 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26560);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27139);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist4;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
+var_tattridnode3 = var_nodearraylist4;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype7 = type_nullable_parser_nodes__TAttrid.color;
+idtype8 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
 var6 = 1;
 } else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
+if(cltype7 >= var_tattridnode3->type->table_size) {
 var6 = 0;
 } else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+var6 = var_tattridnode3->type->type_table[cltype7] == idtype8;
 }
 }
 if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26562);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27141);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__ALtExpr(&type_parser_nodes__ALtExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ALtExpr__init_altexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_altexpr on <var9:ALtExpr>*/;
-CHECK_NEW_parser_nodes__ALtExpr(var9);
+var9 = NEW_parser_nodes__AAttrExpr(&type_parser_nodes__AAttrExpr);
+((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AAttrExpr__init_aattrexpr]))(var9, var_pexprnode2, var_tattridnode3) /* init_aattrexpr on <var9:AAttrExpr>*/;
 var_pexprnode1 = var9;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction721> */
+var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction753> */
 var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
 ((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction721#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction721__action(val* self, val* p0) {
-parser__ReduceAction721__action(self, p0);
+/* method parser#ReduceAction753#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction753__action(val* self, val* p0) {
+parser__ReduceAction753__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction722#action for (self: ReduceAction722, Parser) */
-void parser__ReduceAction722__action(val* self, val* p0) {
+/* method parser#ReduceAction754#action for (self: ReduceAction754, Parser) */
+void parser__ReduceAction754__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var4 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var5 /* : Bool */;
+val* var2 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var3 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var9 /* : ALeExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ALeExpr */;
-long var10 /* : Int */;
-long var11 /* : Int */;
+val* var4 /* : AAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrExpr */;
+long var5 /* : Int */;
+long var6 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
-var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var5 = 1;
-} else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var5 = 0;
-} else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var5) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26581);
-exit(1);
-}
-var_pexprnode3 = var_nodearraylist4;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var6 = 1;
+var_nodearraylist1 = var1;
+var2 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var2->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var2) /* init_aimplicitselfexpr on <var2:AImplicitSelfExpr>*/;
+var_pexprnode2 = var2;
+var_tattridnode3 = var_nodearraylist1;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var3 = 1;
 } else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
-var6 = 0;
+if(cltype >= var_tattridnode3->type->table_size) {
+var3 = 0;
 } else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+var3 = var_tattridnode3->type->type_table[cltype] == idtype;
 }
 }
-if (!var6) {
+if (!var3) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26583);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27158);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__ALeExpr(&type_parser_nodes__ALeExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ALeExpr__init_aleexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aleexpr on <var9:ALeExpr>*/;
-CHECK_NEW_parser_nodes__ALeExpr(var9);
-var_pexprnode1 = var9;
+var4 = NEW_parser_nodes__AAttrExpr(&type_parser_nodes__AAttrExpr);
+((void (*)(val*, val*, val*))(var4->class->vft[COLOR_parser_prod__AAttrExpr__init_aattrexpr]))(var4, var_pexprnode2, var_tattridnode3) /* init_aattrexpr on <var4:AAttrExpr>*/;
+var_pexprnode1 = var4;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction722> */
-var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+var5 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction754> */
+var6 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var5) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var6, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction722#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction722__action(val* self, val* p0) {
-parser__ReduceAction722__action(self, p0);
+/* method parser#ReduceAction754#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction754__action(val* self, val* p0) {
+parser__ReduceAction754__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction723#action for (self: ReduceAction723, Parser) */
-void parser__ReduceAction723__action(val* self, val* p0) {
+/* method parser#ReduceAction755#action for (self: ReduceAction755, Parser) */
+void parser__ReduceAction755__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
 val* var4 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var5 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
 val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var5 /* : Bool */;
+short int var6 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var9 /* : ALlExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable ALlExpr */;
-long var10 /* : Int */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var7 /* : Bool */;
+int cltype8;
+int idtype9;
+val* var10 /* : AAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrExpr */;
 long var11 /* : Int */;
+long var12 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist5 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist4 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
+var_nodearraylist3 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
+var_nodearraylist2 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var5;
 var_pexprnode2 = var_nodearraylist1;
 /* <var_pexprnode2:nullable Object> isa nullable AExpr */
 cltype = type_nullable_parser_nodes__AExpr.color;
 idtype = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode2 == NULL) {
-var5 = 1;
+var6 = 1;
 } else {
 if(cltype >= var_pexprnode2->type->table_size) {
-var5 = 0;
+var6 = 0;
 } else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
+var6 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var5) {
+if (!var6) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26602);
-exit(1);
-}
-var_pexprnode3 = var_nodearraylist4;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var6 = 1;
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27178);
+show_backtrace(1);
+}
+var_tattridnode3 = var_nodearraylist5;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype8 = type_nullable_parser_nodes__TAttrid.color;
+idtype9 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var7 = 1;
 } else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
-var6 = 0;
+if(cltype8 >= var_tattridnode3->type->table_size) {
+var7 = 0;
 } else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+var7 = var_tattridnode3->type->type_table[cltype8] == idtype9;
 }
 }
-if (!var6) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26604);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27180);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__ALlExpr(&type_parser_nodes__ALlExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__ALlExpr__init_allexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_allexpr on <var9:ALlExpr>*/;
-CHECK_NEW_parser_nodes__ALlExpr(var9);
-var_pexprnode1 = var9;
+var10 = NEW_parser_nodes__AAttrExpr(&type_parser_nodes__AAttrExpr);
+((void (*)(val*, val*, val*))(var10->class->vft[COLOR_parser_prod__AAttrExpr__init_aattrexpr]))(var10, var_pexprnode2, var_tattridnode3) /* init_aattrexpr on <var10:AAttrExpr>*/;
+var_pexprnode1 = var10;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction723> */
-var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+var11 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction755> */
+var12 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var11) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var12, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction723#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction723__action(val* self, val* p0) {
-parser__ReduceAction723__action(self, p0);
+/* method parser#ReduceAction755#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction755__action(val* self, val* p0) {
+parser__ReduceAction755__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction724#action for (self: ReduceAction724, Parser) */
-void parser__ReduceAction724__action(val* self, val* p0) {
+/* method parser#ReduceAction756#action for (self: ReduceAction756, Parser) */
+void parser__ReduceAction756__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
+val* var_nodearraylist6 /* var nodearraylist6: nullable Object */;
 val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var_nodearraylist5 /* var nodearraylist5: nullable Object */;
 val* var3 /* : nullable Object */;
-val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
 val* var4 /* : nullable Object */;
+val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
+val* var5 /* : nullable Object */;
+val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
+val* var6 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
 val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var5 /* : Bool */;
+short int var7 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var9 /* : AGtExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AGtExpr */;
-long var10 /* : Int */;
-long var11 /* : Int */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+val* var11 /* : AAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrExpr */;
+long var12 /* : Int */;
+long var13 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist6 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist5 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
+var_nodearraylist4 = var3;
 var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
+var_nodearraylist3 = var4;
+var5 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist2 = var5;
+var6 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
+var_nodearraylist1 = var6;
 var_pexprnode2 = var_nodearraylist1;
 /* <var_pexprnode2:nullable Object> isa nullable AExpr */
 cltype = type_nullable_parser_nodes__AExpr.color;
 idtype = type_nullable_parser_nodes__AExpr.id;
 if(var_pexprnode2 == NULL) {
-var5 = 1;
+var7 = 1;
 } else {
 if(cltype >= var_pexprnode2->type->table_size) {
-var5 = 0;
+var7 = 0;
 } else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
+var7 = var_pexprnode2->type->type_table[cltype] == idtype;
 }
 }
-if (!var5) {
+if (!var7) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26623);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27201);
+show_backtrace(1);
 }
-var_pexprnode3 = var_nodearraylist4;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var6 = 1;
+var_tattridnode3 = var_nodearraylist6;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype9 = type_nullable_parser_nodes__TAttrid.color;
+idtype10 = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var8 = 1;
 } else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
-var6 = 0;
+if(cltype9 >= var_tattridnode3->type->table_size) {
+var8 = 0;
 } else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+var8 = var_tattridnode3->type->type_table[cltype9] == idtype10;
 }
 }
-if (!var6) {
+if (!var8) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26625);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27203);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__AGtExpr(&type_parser_nodes__AGtExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AGtExpr__init_agtexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_agtexpr on <var9:AGtExpr>*/;
-CHECK_NEW_parser_nodes__AGtExpr(var9);
-var_pexprnode1 = var9;
+var11 = NEW_parser_nodes__AAttrExpr(&type_parser_nodes__AAttrExpr);
+((void (*)(val*, val*, val*))(var11->class->vft[COLOR_parser_prod__AAttrExpr__init_aattrexpr]))(var11, var_pexprnode2, var_tattridnode3) /* init_aattrexpr on <var11:AAttrExpr>*/;
+var_pexprnode1 = var11;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction724> */
-var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+var12 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction756> */
+var13 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var12) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var13, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction724#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction724__action(val* self, val* p0) {
-parser__ReduceAction724__action(self, p0);
+/* method parser#ReduceAction756#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction756__action(val* self, val* p0) {
+parser__ReduceAction756__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction725#action for (self: ReduceAction725, Parser) */
-void parser__ReduceAction725__action(val* self, val* p0) {
+/* method parser#ReduceAction758#action for (self: ReduceAction758, Parser) */
+void parser__ReduceAction758__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var2 /* : nullable Object */;
-val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var3 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
-short int var5 /* : Bool */;
+val* var3 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
+short int var4 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var9 /* : AGeExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AGeExpr */;
-long var10 /* : Int */;
-long var11 /* : Int */;
+val* var5 /* : AAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrExpr */;
+long var6 /* : Int */;
+long var7 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist2 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
-var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
-var5 = 1;
-} else {
-if(cltype >= var_pexprnode2->type->table_size) {
-var5 = 0;
-} else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
-}
-}
-if (!var5) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26644);
-exit(1);
-}
-var_pexprnode3 = var_nodearraylist4;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var6 = 1;
+var_nodearraylist1 = var2;
+var3 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var3->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var3) /* init_aimplicitselfexpr on <var3:AImplicitSelfExpr>*/;
+var_pexprnode2 = var3;
+var_tattridnode3 = var_nodearraylist2;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
+var4 = 1;
 } else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
-var6 = 0;
+if(cltype >= var_tattridnode3->type->table_size) {
+var4 = 0;
 } else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
+var4 = var_tattridnode3->type->type_table[cltype] == idtype;
 }
 }
-if (!var6) {
+if (!var4) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26646);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27221);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__AGeExpr(&type_parser_nodes__AGeExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AGeExpr__init_ageexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_ageexpr on <var9:AGeExpr>*/;
-CHECK_NEW_parser_nodes__AGeExpr(var9);
-var_pexprnode1 = var9;
+var5 = NEW_parser_nodes__AAttrExpr(&type_parser_nodes__AAttrExpr);
+((void (*)(val*, val*, val*))(var5->class->vft[COLOR_parser_prod__AAttrExpr__init_aattrexpr]))(var5, var_pexprnode2, var_tattridnode3) /* init_aattrexpr on <var5:AAttrExpr>*/;
+var_pexprnode1 = var5;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction725> */
-var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+var6 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction758> */
+var7 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var6) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var7, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction725#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction725__action(val* self, val* p0) {
-parser__ReduceAction725__action(self, p0);
+/* method parser#ReduceAction758#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction758__action(val* self, val* p0) {
+parser__ReduceAction758__action(self, p0);
 RET_LABEL:;
 }
-/* method parser#ReduceAction726#action for (self: ReduceAction726, Parser) */
-void parser__ReduceAction726__action(val* self, val* p0) {
+/* method parser#ReduceAction759#action for (self: ReduceAction759, Parser) */
+void parser__ReduceAction759__action(val* self, val* p0) {
 val* var_p /* var p: Parser */;
 val* var /* : null */;
 val* var_node_list /* var node_list: nullable Object */;
 val* var1 /* : nullable Object */;
-val* var_nodearraylist4 /* var nodearraylist4: nullable Object */;
-val* var2 /* : nullable Object */;
 val* var_nodearraylist3 /* var nodearraylist3: nullable Object */;
-val* var3 /* : nullable Object */;
+val* var2 /* : nullable Object */;
 val* var_nodearraylist2 /* var nodearraylist2: nullable Object */;
-val* var4 /* : nullable Object */;
+val* var3 /* : nullable Object */;
 val* var_nodearraylist1 /* var nodearraylist1: nullable Object */;
-val* var_pexprnode2 /* var pexprnode2: nullable Object */;
+val* var4 /* : AImplicitSelfExpr */;
+val* var_pexprnode2 /* var pexprnode2: nullable AImplicitSelfExpr */;
+val* var_tattridnode3 /* var tattridnode3: nullable Object */;
 short int var5 /* : Bool */;
 int cltype;
 int idtype;
-val* var_pexprnode3 /* var pexprnode3: nullable Object */;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-val* var9 /* : AGgExpr */;
-val* var_pexprnode1 /* var pexprnode1: nullable AGgExpr */;
-long var10 /* : Int */;
-long var11 /* : Int */;
+val* var6 /* : AAttrExpr */;
+val* var_pexprnode1 /* var pexprnode1: nullable AAttrExpr */;
+long var7 /* : Int */;
+long var8 /* : Int */;
 var_p = p0;
 var = NULL;
 var_node_list = var;
 var1 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist4 = var1;
+var_nodearraylist3 = var1;
 var2 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist3 = var2;
+var_nodearraylist2 = var2;
 var3 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist2 = var3;
-var4 = ((val* (*)(val*))(var_p->class->vft[COLOR_parser__Parser__pop]))(var_p) /* pop on <var_p:Parser>*/;
-var_nodearraylist1 = var4;
-var_pexprnode2 = var_nodearraylist1;
-/* <var_pexprnode2:nullable Object> isa nullable AExpr */
-cltype = type_nullable_parser_nodes__AExpr.color;
-idtype = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode2 == NULL) {
+var_nodearraylist1 = var3;
+var4 = NEW_parser_nodes__AImplicitSelfExpr(&type_parser_nodes__AImplicitSelfExpr);
+((void (*)(val*))(var4->class->vft[COLOR_parser_prod__AImplicitSelfExpr__init_aimplicitselfexpr]))(var4) /* init_aimplicitselfexpr on <var4:AImplicitSelfExpr>*/;
+var_pexprnode2 = var4;
+var_tattridnode3 = var_nodearraylist3;
+/* <var_tattridnode3:nullable Object> isa nullable TAttrid */
+cltype = type_nullable_parser_nodes__TAttrid.color;
+idtype = type_nullable_parser_nodes__TAttrid.id;
+if(var_tattridnode3 == NULL) {
 var5 = 1;
 } else {
-if(cltype >= var_pexprnode2->type->table_size) {
+if(cltype >= var_tattridnode3->type->table_size) {
 var5 = 0;
 } else {
-var5 = var_pexprnode2->type->type_table[cltype] == idtype;
+var5 = var_tattridnode3->type->type_table[cltype] == idtype;
 }
 }
 if (!var5) {
 fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26665);
-exit(1);
-}
-var_pexprnode3 = var_nodearraylist4;
-/* <var_pexprnode3:nullable Object> isa nullable AExpr */
-cltype7 = type_nullable_parser_nodes__AExpr.color;
-idtype8 = type_nullable_parser_nodes__AExpr.id;
-if(var_pexprnode3 == NULL) {
-var6 = 1;
-} else {
-if(cltype7 >= var_pexprnode3->type->table_size) {
-var6 = 0;
-} else {
-var6 = var_pexprnode3->type->type_table[cltype7] == idtype8;
-}
-}
-if (!var6) {
-fprintf(stderr, "Runtime error: %s", "Assert failed");
-fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 26667);
-exit(1);
+fprintf(stderr, " (%s:%d)\n", "src/parser/parser.nit", 27240);
+show_backtrace(1);
 }
-var9 = NEW_parser_nodes__AGgExpr(&type_parser_nodes__AGgExpr);
-((void (*)(val*, val*, val*))(var9->class->vft[COLOR_parser_prod__AGgExpr__init_aggexpr]))(var9, var_pexprnode2, var_pexprnode3) /* init_aggexpr on <var9:AGgExpr>*/;
-CHECK_NEW_parser_nodes__AGgExpr(var9);
-var_pexprnode1 = var9;
+var6 = NEW_parser_nodes__AAttrExpr(&type_parser_nodes__AAttrExpr);
+((void (*)(val*, val*, val*))(var6->class->vft[COLOR_parser_prod__AAttrExpr__init_aattrexpr]))(var6, var_pexprnode2, var_tattridnode3) /* init_aattrexpr on <var6:AAttrExpr>*/;
+var_pexprnode1 = var6;
 var_node_list = var_pexprnode1;
-var10 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction726> */
-var11 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var10) /* go_to on <var_p:Parser>*/;
-((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var11, var_node_list) /* push on <var_p:Parser>*/;
+var7 = self->attrs[COLOR_parser__ReduceAction___goto].l; /* _goto on <self:ReduceAction759> */
+var8 = ((long (*)(val*, long))(var_p->class->vft[COLOR_parser__Parser__go_to]))(var_p, var7) /* go_to on <var_p:Parser>*/;
+((void (*)(val*, long, val*))(var_p->class->vft[COLOR_parser__Parser__push]))(var_p, var8, var_node_list) /* push on <var_p:Parser>*/;
 RET_LABEL:;
 }
-/* method parser#ReduceAction726#action for (self: Object, Parser) */
-void VIRTUAL_parser__ReduceAction726__action(val* self, val* p0) {
-parser__ReduceAction726__action(self, p0);
+/* method parser#ReduceAction759#action for (self: Object, Parser) */
+void VIRTUAL_parser__ReduceAction759__action(val* self, val* p0) {
+parser__ReduceAction759__action(self, p0);
 RET_LABEL:;
 }