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

diff --git a/c_src/more_collections.sep.1.c b/c_src/more_collections.sep.1.c
index 8d8e49c..d8dc958 100644
--- a/c_src/more_collections.sep.1.c
+++ b/c_src/more_collections.sep.1.c
@@ -1,48 +1,60 @@
 #include "more_collections.sep.0.h"
-/* method more_collections#MultiHashMap#add_one for (self: MultiHashMap[Object, nullable Object], Object, nullable Object) */
-void more_collections__MultiHashMap__add_one(val* self, val* p0, val* p1) {
+/* method more_collections#MultiHashMap#add_one for (self: MultiHashMap[nullable Object, nullable Object], nullable Object, nullable Object) */
+void more_collections___more_collections__MultiHashMap___add_one(val* self, val* p0, val* p1) {
 short int var /* : Bool */;
 int cltype;
 int idtype;
 const struct type* type_struct;
+short int is_nullable;
 const char* var_class_name;
 short int var1 /* : Bool */;
 int cltype2;
 int idtype3;
 const struct type* type_struct4;
-short int is_nullable;
-const char* var_class_name5;
-val* var_k /* var k: Object */;
+short int is_nullable5;
+const char* var_class_name6;
+val* var_k /* var k: nullable Object */;
 val* var_v /* var v: nullable Object */;
-short int var6 /* : Bool */;
 val* var7 /* : nullable Object */;
-val* var8 /* : Array[nullable Object] */;
-long var9 /* : Int */;
+val* var_x /* var x: nullable Array[nullable Object] */;
+val* var8 /* : null */;
+short int var9 /* : Bool */;
+short int var10 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var12 /* : Bool */;
+short int var13 /* : Bool */;
+val* var14 /* : Array[nullable Object] */;
+long var15 /* : Int */;
 val* var_ /* var : Array[nullable Object] */;
-/* Covariant cast for argument 0 (k) <p0:Object> isa MultiHashMap#0 */
-/* <p0:Object> isa MultiHashMap#0 */
-type_struct = self->type->resolution_table->types[COLOR_more_collections__MultiHashMap_FT0];
+/* Covariant cast for argument 0 (k) <p0:nullable Object> isa K */
+/* <p0:nullable Object> isa K */
+type_struct = self->type->resolution_table->types[COLOR_more_collections__MultiHashMap___35dK];
 cltype = type_struct->color;
 idtype = type_struct->id;
+is_nullable = type_struct->is_nullable;
+if(p0 == NULL) {
+var = is_nullable;
+} else {
 if(cltype >= p0->type->table_size) {
 var = 0;
 } else {
 var = p0->type->type_table[cltype] == idtype;
 }
+}
 if (unlikely(!var)) {
 var_class_name = p0 == NULL ? "null" : p0->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "MultiHashMap#0", var_class_name);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 35);
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 35);
 show_backtrace(1);
 }
-/* Covariant cast for argument 1 (v) <p1:nullable Object> isa MultiHashMap#1 */
-/* <p1:nullable Object> isa MultiHashMap#1 */
-type_struct4 = self->type->resolution_table->types[COLOR_more_collections__MultiHashMap_FT1];
+/* Covariant cast for argument 1 (v) <p1:nullable Object> isa V */
+/* <p1:nullable Object> isa V */
+type_struct4 = self->type->resolution_table->types[COLOR_more_collections__MultiHashMap___35dV];
 cltype2 = type_struct4->color;
 idtype3 = type_struct4->id;
-is_nullable = type_struct4->is_nullable;
+is_nullable5 = type_struct4->is_nullable;
 if(p1 == NULL) {
-var1 = is_nullable;
+var1 = is_nullable5;
 } else {
 if(cltype2 >= p1->type->table_size) {
 var1 = 0;
@@ -51,652 +63,697 @@ var1 = p1->type->type_table[cltype2] == idtype3;
 }
 }
 if (unlikely(!var1)) {
-var_class_name5 = p1 == NULL ? "null" : p1->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "MultiHashMap#1", var_class_name5);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 35);
+var_class_name6 = p1 == NULL ? "null" : p1->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "V", var_class_name6);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 35);
 show_backtrace(1);
 }
 var_k = p0;
 var_v = p1;
 {
-var6 = abstract_collection__MapRead__has_key(self, var_k);
+var7 = standard___standard__HashMap___standard__abstract_collection__MapRead__get_or_null(self, var_k);
+}
+var_x = var7;
+var8 = NULL;
+if (var_x == NULL) {
+var9 = 0; /* is null */
+} else {
+var9 = 1; /* arg is null and recv is not */
 }
-if (var6){
+if (0) {
+{ /* Inline kernel#Object#!= (var_x,var8) on <var_x:nullable Array[nullable Object]> */
+var_other = var8;
 {
-var7 = hash_collection__HashMap___91d_93d(self, var_k);
+var12 = ((short int (*)(val* self, val* p0))(var_x->class->vft[COLOR_standard__kernel__Object___61d_61d]))(var_x, var_other) /* == on <var_x:nullable Array[nullable Object](Array[nullable Object])>*/;
+}
+var13 = !var12;
+var10 = var13;
+goto RET_LABEL11;
+RET_LABEL11:(void)0;
+}
+var9 = var10;
 }
+if (var9){
 {
-array__Array__add(var7, var_v); /* Direct call array#Array#add on <var7:nullable Object(Array[nullable Object])>*/
+standard___standard__Array___standard__abstract_collection__SimpleCollection__add(var_x, var_v); /* Direct call array#Array#add on <var_x:nullable Array[nullable Object](Array[nullable Object])>*/
 }
 } else {
-var8 = NEW_array__Array(self->type->resolution_table->types[COLOR_array__Arraymore_collections__MultiHashMap_FT1]);
-var9 = 1;
+var14 = NEW_standard__Array(self->type->resolution_table->types[COLOR_standard__Array__more_collections__MultiHashMap___35dV]);
+var15 = 1;
 {
-array__Array__with_capacity(var8, var9); /* Direct call array#Array#with_capacity on <var8:Array[nullable Object]>*/
+standard___standard__Array___with_capacity(var14, var15); /* Direct call array#Array#with_capacity on <var14:Array[nullable Object]>*/
 }
-var_ = var8;
+var_ = var14;
 {
-array__AbstractArray__push(var_, var_v); /* Direct call array#AbstractArray#push on <var_:Array[nullable Object]>*/
+standard___standard__AbstractArray___standard__abstract_collection__Sequence__push(var_, var_v); /* Direct call array#AbstractArray#push on <var_:Array[nullable Object]>*/
 }
 {
-hash_collection__HashMap___91d_93d_61d(self, var_k, var_); /* Direct call hash_collection#HashMap#[]= on <self:MultiHashMap[Object, nullable Object]>*/
+standard___standard__HashMap___standard__abstract_collection__Map___91d_93d_61d(self, var_k, var_); /* Direct call hash_collection#HashMap#[]= on <self:MultiHashMap[nullable Object, nullable Object]>*/
 }
 }
 RET_LABEL:;
 }
-/* method more_collections#MultiHashMap#add_one for (self: Object, Object, nullable Object) */
-void VIRTUAL_more_collections__MultiHashMap__add_one(val* self, val* p0, val* p1) {
-more_collections__MultiHashMap__add_one(self, p0, p1); /* Direct call more_collections#MultiHashMap#add_one on <self:Object(MultiHashMap[Object, nullable Object])>*/
-RET_LABEL:;
-}
-/* method more_collections#MultiHashMap#provide_default_value for (self: MultiHashMap[Object, nullable Object], Object): Array[nullable Object] */
-val* more_collections__MultiHashMap__provide_default_value(val* self, val* p0) {
+/* method more_collections#MultiHashMap#provide_default_value for (self: MultiHashMap[nullable Object, nullable Object], nullable Object): Array[nullable Object] */
+val* more_collections___more_collections__MultiHashMap___standard__abstract_collection__MapRead__provide_default_value(val* self, val* p0) {
 val* var /* : Array[nullable Object] */;
 short int var1 /* : Bool */;
 int cltype;
 int idtype;
 const struct type* type_struct;
+short int is_nullable;
 const char* var_class_name;
-val* var_key /* var key: Object */;
+val* var_key /* var key: nullable Object */;
 val* var2 /* : Array[nullable Object] */;
 val* var_res /* var res: Array[nullable Object] */;
-/* Covariant cast for argument 0 (key) <p0:Object> isa MapRead#0 */
-/* <p0:Object> isa MapRead#0 */
-type_struct = self->type->resolution_table->types[COLOR_abstract_collection__MapRead_FT0];
+/* Covariant cast for argument 0 (key) <p0:nullable Object> isa K */
+/* <p0:nullable Object> isa K */
+type_struct = self->type->resolution_table->types[COLOR_more_collections__MultiHashMap___35dK];
 cltype = type_struct->color;
 idtype = type_struct->id;
+is_nullable = type_struct->is_nullable;
+if(p0 == NULL) {
+var1 = is_nullable;
+} else {
 if(cltype >= p0->type->table_size) {
 var1 = 0;
 } else {
 var1 = p0->type->type_table[cltype] == idtype;
 }
+}
 if (unlikely(!var1)) {
 var_class_name = p0 == NULL ? "null" : p0->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "MapRead#0", var_class_name);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 46);
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 47);
 show_backtrace(1);
 }
 var_key = p0;
-var2 = NEW_array__Array(self->type->resolution_table->types[COLOR_array__Arraymore_collections__MultiHashMap_FT1]);
+var2 = NEW_standard__Array(self->type->resolution_table->types[COLOR_standard__Array__more_collections__MultiHashMap___35dV]);
 {
-array__Array__init(var2); /* Direct call array#Array#init on <var2:Array[nullable Object]>*/
+standard___standard__Array___standard__kernel__Object__init(var2); /* Direct call array#Array#init on <var2:Array[nullable Object]>*/
 }
 var_res = var2;
 {
-hash_collection__HashMap___91d_93d_61d(self, var_key, var_res); /* Direct call hash_collection#HashMap#[]= on <self:MultiHashMap[Object, nullable Object]>*/
+standard___standard__HashMap___standard__abstract_collection__Map___91d_93d_61d(self, var_key, var_res); /* Direct call hash_collection#HashMap#[]= on <self:MultiHashMap[nullable Object, nullable Object]>*/
 }
 var = var_res;
 goto RET_LABEL;
 RET_LABEL:;
 return var;
 }
-/* method more_collections#MultiHashMap#provide_default_value for (self: Object, Object): nullable Object */
-val* VIRTUAL_more_collections__MultiHashMap__provide_default_value(val* self, val* p0) {
-val* var /* : nullable Object */;
-val* var1 /* : Array[nullable Object] */;
-var1 = more_collections__MultiHashMap__provide_default_value(self, p0);
-var = var1;
-RET_LABEL:;
-return var;
-}
-/* method more_collections#MultiHashMap#init for (self: MultiHashMap[Object, nullable Object]) */
-void more_collections__MultiHashMap__init(val* self) {
-{
-hash_collection__HashMap__init(self); /* Direct call hash_collection#HashMap#init on <self:MultiHashMap[Object, nullable Object]>*/
-}
-RET_LABEL:;
-}
-/* method more_collections#MultiHashMap#init for (self: Object) */
-void VIRTUAL_more_collections__MultiHashMap__init(val* self) {
-more_collections__MultiHashMap__init(self); /* Direct call more_collections#MultiHashMap#init on <self:Object(MultiHashMap[Object, nullable Object])>*/
-RET_LABEL:;
-}
-/* method more_collections#HashMap2#level1 for (self: HashMap2[Object, Object, nullable Object]): HashMap[Object, HashMap[Object, nullable Object]] */
-val* more_collections__HashMap2__level1(val* self) {
-val* var /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-val* var1 /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-var1 = self->attrs[COLOR_more_collections__HashMap2___level1].val; /* _level1 on <self:HashMap2[Object, Object, nullable Object]> */
+/* method more_collections#HashMap2#level1 for (self: HashMap2[nullable Object, nullable Object, nullable Object]): HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */
+val* more_collections___more_collections__HashMap2___level1(val* self) {
+val* var /* : HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */;
+val* var1 /* : HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */;
+var1 = self->attrs[COLOR_more_collections__HashMap2___level1].val; /* _level1 on <self:HashMap2[nullable Object, nullable Object, nullable Object]> */
 if (unlikely(var1 == NULL)) {
 PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _level1");
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 57);
-show_backtrace(1);
-}
-var = var1;
-RET_LABEL:;
-return var;
-}
-/* method more_collections#HashMap2#level1 for (self: Object): HashMap[Object, HashMap[Object, nullable Object]] */
-val* VIRTUAL_more_collections__HashMap2__level1(val* self) {
-val* var /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-val* var1 /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-val* var3 /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-{ /* Inline more_collections#HashMap2#level1 (self) on <self:Object(HashMap2[Object, Object, nullable Object])> */
-var3 = self->attrs[COLOR_more_collections__HashMap2___level1].val; /* _level1 on <self:Object(HashMap2[Object, Object, nullable Object])> */
-if (unlikely(var3 == NULL)) {
-PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _level1");
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 57);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 64);
 show_backtrace(1);
 }
-var1 = var3;
-RET_LABEL2:(void)0;
-}
 var = var1;
 RET_LABEL:;
 return var;
 }
-/* method more_collections#HashMap2#[] for (self: HashMap2[Object, Object, nullable Object], Object, Object): nullable Object */
-val* more_collections__HashMap2___91d_93d(val* self, val* p0, val* p1) {
+/* method more_collections#HashMap2#[] for (self: HashMap2[nullable Object, nullable Object, nullable Object], nullable Object, nullable Object): nullable Object */
+val* more_collections___more_collections__HashMap2____91d_93d(val* self, val* p0, val* p1) {
 val* var /* : nullable Object */;
 short int var1 /* : Bool */;
 int cltype;
 int idtype;
 const struct type* type_struct;
+short int is_nullable;
 const char* var_class_name;
 short int var2 /* : Bool */;
 int cltype3;
 int idtype4;
 const struct type* type_struct5;
-const char* var_class_name6;
-val* var_k1 /* var k1: Object */;
-val* var_k2 /* var k2: Object */;
-val* var7 /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-val* var9 /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-val* var_level1 /* var level1: HashMap[Object, HashMap[Object, nullable Object]] */;
-short int var10 /* : Bool */;
-short int var11 /* : Bool */;
+short int is_nullable6;
+const char* var_class_name7;
+val* var_k1 /* var k1: nullable Object */;
+val* var_k2 /* var k2: nullable Object */;
+val* var8 /* : HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */;
+val* var10 /* : HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */;
+val* var_level1 /* var level1: HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */;
+val* var11 /* : nullable Object */;
+val* var_level2 /* var level2: nullable HashMap[nullable Object, nullable Object] */;
 val* var12 /* : null */;
-val* var13 /* : nullable Object */;
-val* var_level2 /* var level2: HashMap[Object, nullable Object] */;
+short int var13 /* : Bool */;
 short int var14 /* : Bool */;
-short int var15 /* : Bool */;
-val* var16 /* : null */;
-val* var17 /* : nullable Object */;
-/* Covariant cast for argument 0 (k1) <p0:Object> isa HashMap2#0 */
-/* <p0:Object> isa HashMap2#0 */
-type_struct = self->type->resolution_table->types[COLOR_more_collections__HashMap2_FT0];
+val* var_other /* var other: nullable Object */;
+short int var16 /* : Bool */;
+short int var18 /* : Bool */;
+val* var19 /* : null */;
+val* var20 /* : nullable Object */;
+/* Covariant cast for argument 0 (k1) <p0:nullable Object> isa K1 */
+/* <p0:nullable Object> isa K1 */
+type_struct = self->type->resolution_table->types[COLOR_more_collections__HashMap2___35dK1];
 cltype = type_struct->color;
 idtype = type_struct->id;
+is_nullable = type_struct->is_nullable;
+if(p0 == NULL) {
+var1 = is_nullable;
+} else {
 if(cltype >= p0->type->table_size) {
 var1 = 0;
 } else {
 var1 = p0->type->type_table[cltype] == idtype;
 }
+}
 if (unlikely(!var1)) {
 var_class_name = p0 == NULL ? "null" : p0->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap2#0", var_class_name);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 59);
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K1", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 66);
 show_backtrace(1);
 }
-/* Covariant cast for argument 1 (k2) <p1:Object> isa HashMap2#1 */
-/* <p1:Object> isa HashMap2#1 */
-type_struct5 = self->type->resolution_table->types[COLOR_more_collections__HashMap2_FT1];
+/* Covariant cast for argument 1 (k2) <p1:nullable Object> isa K2 */
+/* <p1:nullable Object> isa K2 */
+type_struct5 = self->type->resolution_table->types[COLOR_more_collections__HashMap2___35dK2];
 cltype3 = type_struct5->color;
 idtype4 = type_struct5->id;
+is_nullable6 = type_struct5->is_nullable;
+if(p1 == NULL) {
+var2 = is_nullable6;
+} else {
 if(cltype3 >= p1->type->table_size) {
 var2 = 0;
 } else {
 var2 = p1->type->type_table[cltype3] == idtype4;
 }
+}
 if (unlikely(!var2)) {
-var_class_name6 = p1 == NULL ? "null" : p1->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap2#1", var_class_name6);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 59);
+var_class_name7 = p1 == NULL ? "null" : p1->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K2", var_class_name7);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 66);
 show_backtrace(1);
 }
 var_k1 = p0;
 var_k2 = p1;
 {
-{ /* Inline more_collections#HashMap2#level1 (self) on <self:HashMap2[Object, Object, nullable Object]> */
-var9 = self->attrs[COLOR_more_collections__HashMap2___level1].val; /* _level1 on <self:HashMap2[Object, Object, nullable Object]> */
-if (unlikely(var9 == NULL)) {
+{ /* Inline more_collections#HashMap2#level1 (self) on <self:HashMap2[nullable Object, nullable Object, nullable Object]> */
+var10 = self->attrs[COLOR_more_collections__HashMap2___level1].val; /* _level1 on <self:HashMap2[nullable Object, nullable Object, nullable Object]> */
+if (unlikely(var10 == NULL)) {
 PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _level1");
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 57);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 64);
 show_backtrace(1);
 }
-var7 = var9;
-RET_LABEL8:(void)0;
+var8 = var10;
+RET_LABEL9:(void)0;
 }
 }
-var_level1 = var7;
+var_level1 = var8;
 {
-var10 = abstract_collection__MapRead__has_key(var_level1, var_k1);
+var11 = standard___standard__HashMap___standard__abstract_collection__MapRead__get_or_null(var_level1, var_k1);
 }
-var11 = !var10;
-if (var11){
+var_level2 = var11;
 var12 = NULL;
-var = var12;
-goto RET_LABEL;
+if (var_level2 == NULL) {
+var13 = 1; /* is null */
 } else {
+var13 = 0; /* arg is null but recv is not */
 }
+if (0) {
+{ /* Inline kernel#Object#== (var_level2,var12) on <var_level2:nullable HashMap[nullable Object, nullable Object]> */
+var_other = var12;
 {
-var13 = hash_collection__HashMap___91d_93d(var_level1, var_k1);
+{ /* Inline kernel#Object#is_same_instance (var_level2,var_other) on <var_level2:nullable HashMap[nullable Object, nullable Object](HashMap[nullable Object, nullable Object])> */
+var18 = var_level2 == var_other;
+var16 = var18;
+goto RET_LABEL17;
+RET_LABEL17:(void)0;
 }
-var_level2 = var13;
-{
-var14 = abstract_collection__MapRead__has_key(var_level2, var_k2);
 }
-var15 = !var14;
-if (var15){
-var16 = NULL;
-var = var16;
+var14 = var16;
+goto RET_LABEL15;
+RET_LABEL15:(void)0;
+}
+var13 = var14;
+}
+if (var13){
+var19 = NULL;
+var = var19;
 goto RET_LABEL;
 } else {
 }
 {
-var17 = hash_collection__HashMap___91d_93d(var_level2, var_k2);
+var20 = standard___standard__HashMap___standard__abstract_collection__MapRead__get_or_null(var_level2, var_k2);
 }
-var = var17;
+var = var20;
 goto RET_LABEL;
 RET_LABEL:;
 return var;
 }
-/* method more_collections#HashMap2#[] for (self: Object, Object, Object): nullable Object */
-val* VIRTUAL_more_collections__HashMap2___91d_93d(val* self, val* p0, val* p1) {
-val* var /* : nullable Object */;
-val* var1 /* : nullable Object */;
-var1 = more_collections__HashMap2___91d_93d(self, p0, p1);
-var = var1;
-RET_LABEL:;
-return var;
-}
-/* method more_collections#HashMap2#[]= for (self: HashMap2[Object, Object, nullable Object], Object, Object, nullable Object) */
-void more_collections__HashMap2___91d_93d_61d(val* self, val* p0, val* p1, val* p2) {
+/* method more_collections#HashMap2#[]= for (self: HashMap2[nullable Object, nullable Object, nullable Object], nullable Object, nullable Object, nullable Object) */
+void more_collections___more_collections__HashMap2____91d_93d_61d(val* self, val* p0, val* p1, val* p2) {
 short int var /* : Bool */;
 int cltype;
 int idtype;
 const struct type* type_struct;
+short int is_nullable;
 const char* var_class_name;
 short int var1 /* : Bool */;
 int cltype2;
 int idtype3;
 const struct type* type_struct4;
-const char* var_class_name5;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-const struct type* type_struct9;
-short int is_nullable;
-const char* var_class_name10;
-val* var_k1 /* var k1: Object */;
-val* var_k2 /* var k2: Object */;
+short int is_nullable5;
+const char* var_class_name6;
+short int var7 /* : Bool */;
+int cltype8;
+int idtype9;
+const struct type* type_struct10;
+short int is_nullable11;
+const char* var_class_name12;
+val* var_k1 /* var k1: nullable Object */;
+val* var_k2 /* var k2: nullable Object */;
 val* var_v /* var v: nullable Object */;
-val* var11 /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-val* var13 /* : HashMap[Object, HashMap[Object, nullable Object]] */;
-val* var_level1 /* var level1: HashMap[Object, HashMap[Object, nullable Object]] */;
-short int var14 /* : Bool */;
-short int var15 /* : Bool */;
-val* var16 /* : HashMap[Object, nullable Object] */;
-val* var_level2 /* var level2: HashMap[Object, nullable Object] */;
-val* var17 /* : nullable Object */;
-/* Covariant cast for argument 0 (k1) <p0:Object> isa HashMap2#0 */
-/* <p0:Object> isa HashMap2#0 */
-type_struct = self->type->resolution_table->types[COLOR_more_collections__HashMap2_FT0];
+val* var13 /* : HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */;
+val* var15 /* : HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */;
+val* var_level1 /* var level1: HashMap[nullable Object, HashMap[nullable Object, nullable Object]] */;
+val* var16 /* : nullable Object */;
+val* var_level2 /* var level2: nullable HashMap[nullable Object, nullable Object] */;
+val* var17 /* : null */;
+short int var18 /* : Bool */;
+short int var19 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var21 /* : Bool */;
+short int var23 /* : Bool */;
+val* var24 /* : HashMap[nullable Object, nullable Object] */;
+/* Covariant cast for argument 0 (k1) <p0:nullable Object> isa K1 */
+/* <p0:nullable Object> isa K1 */
+type_struct = self->type->resolution_table->types[COLOR_more_collections__HashMap2___35dK1];
 cltype = type_struct->color;
 idtype = type_struct->id;
+is_nullable = type_struct->is_nullable;
+if(p0 == NULL) {
+var = is_nullable;
+} else {
 if(cltype >= p0->type->table_size) {
 var = 0;
 } else {
 var = p0->type->type_table[cltype] == idtype;
 }
+}
 if (unlikely(!var)) {
 var_class_name = p0 == NULL ? "null" : p0->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap2#0", var_class_name);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 70);
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K1", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 76);
 show_backtrace(1);
 }
-/* Covariant cast for argument 1 (k2) <p1:Object> isa HashMap2#1 */
-/* <p1:Object> isa HashMap2#1 */
-type_struct4 = self->type->resolution_table->types[COLOR_more_collections__HashMap2_FT1];
+/* Covariant cast for argument 1 (k2) <p1:nullable Object> isa K2 */
+/* <p1:nullable Object> isa K2 */
+type_struct4 = self->type->resolution_table->types[COLOR_more_collections__HashMap2___35dK2];
 cltype2 = type_struct4->color;
 idtype3 = type_struct4->id;
+is_nullable5 = type_struct4->is_nullable;
+if(p1 == NULL) {
+var1 = is_nullable5;
+} else {
 if(cltype2 >= p1->type->table_size) {
 var1 = 0;
 } else {
 var1 = p1->type->type_table[cltype2] == idtype3;
 }
+}
 if (unlikely(!var1)) {
-var_class_name5 = p1 == NULL ? "null" : p1->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap2#1", var_class_name5);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 70);
+var_class_name6 = p1 == NULL ? "null" : p1->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K2", var_class_name6);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 76);
 show_backtrace(1);
 }
-/* Covariant cast for argument 2 (v) <p2:nullable Object> isa HashMap2#2 */
-/* <p2:nullable Object> isa HashMap2#2 */
-type_struct9 = self->type->resolution_table->types[COLOR_more_collections__HashMap2_FT2];
-cltype7 = type_struct9->color;
-idtype8 = type_struct9->id;
-is_nullable = type_struct9->is_nullable;
+/* Covariant cast for argument 2 (v) <p2:nullable Object> isa V */
+/* <p2:nullable Object> isa V */
+type_struct10 = self->type->resolution_table->types[COLOR_more_collections__HashMap2___35dV];
+cltype8 = type_struct10->color;
+idtype9 = type_struct10->id;
+is_nullable11 = type_struct10->is_nullable;
 if(p2 == NULL) {
-var6 = is_nullable;
+var7 = is_nullable11;
 } else {
-if(cltype7 >= p2->type->table_size) {
-var6 = 0;
+if(cltype8 >= p2->type->table_size) {
+var7 = 0;
 } else {
-var6 = p2->type->type_table[cltype7] == idtype8;
+var7 = p2->type->type_table[cltype8] == idtype9;
 }
 }
-if (unlikely(!var6)) {
-var_class_name10 = p2 == NULL ? "null" : p2->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap2#2", var_class_name10);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 70);
+if (unlikely(!var7)) {
+var_class_name12 = p2 == NULL ? "null" : p2->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "V", var_class_name12);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 76);
 show_backtrace(1);
 }
 var_k1 = p0;
 var_k2 = p1;
 var_v = p2;
 {
-{ /* Inline more_collections#HashMap2#level1 (self) on <self:HashMap2[Object, Object, nullable Object]> */
-var13 = self->attrs[COLOR_more_collections__HashMap2___level1].val; /* _level1 on <self:HashMap2[Object, Object, nullable Object]> */
-if (unlikely(var13 == NULL)) {
+{ /* Inline more_collections#HashMap2#level1 (self) on <self:HashMap2[nullable Object, nullable Object, nullable Object]> */
+var15 = self->attrs[COLOR_more_collections__HashMap2___level1].val; /* _level1 on <self:HashMap2[nullable Object, nullable Object, nullable Object]> */
+if (unlikely(var15 == NULL)) {
 PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _level1");
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 57);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 64);
 show_backtrace(1);
 }
-var11 = var13;
-RET_LABEL12:(void)0;
+var13 = var15;
+RET_LABEL14:(void)0;
 }
 }
-var_level1 = var11;
+var_level1 = var13;
 {
-var14 = abstract_collection__MapRead__has_key(var_level1, var_k1);
-}
-var15 = !var14;
-if (var15){
-var16 = NEW_hash_collection__HashMap(self->type->resolution_table->types[COLOR_hash_collection__HashMapmore_collections__HashMap2_FT1more_collections__HashMap2_FT2]);
-{
-hash_collection__HashMap__init(var16); /* Direct call hash_collection#HashMap#init on <var16:HashMap[Object, nullable Object]>*/
+var16 = standard___standard__HashMap___standard__abstract_collection__MapRead__get_or_null(var_level1, var_k1);
 }
 var_level2 = var16;
-{
-hash_collection__HashMap___91d_93d_61d(var_level1, var_k1, var_level2); /* Direct call hash_collection#HashMap#[]= on <var_level1:HashMap[Object, HashMap[Object, nullable Object]]>*/
-}
+var17 = NULL;
+if (var_level2 == NULL) {
+var18 = 1; /* is null */
 } else {
-{
-var17 = hash_collection__HashMap___91d_93d(var_level1, var_k1);
-}
-var_level2 = var17;
+var18 = 0; /* arg is null but recv is not */
 }
+if (0) {
+{ /* Inline kernel#Object#== (var_level2,var17) on <var_level2:nullable HashMap[nullable Object, nullable Object]> */
+var_other = var17;
 {
-hash_collection__HashMap___91d_93d_61d(var_level2, var_k2, var_v); /* Direct call hash_collection#HashMap#[]= on <var_level2:HashMap[Object, nullable Object]>*/
+{ /* Inline kernel#Object#is_same_instance (var_level2,var_other) on <var_level2:nullable HashMap[nullable Object, nullable Object](HashMap[nullable Object, nullable Object])> */
+var23 = var_level2 == var_other;
+var21 = var23;
+goto RET_LABEL22;
+RET_LABEL22:(void)0;
 }
-RET_LABEL:;
 }
-/* method more_collections#HashMap2#[]= for (self: Object, Object, Object, nullable Object) */
-void VIRTUAL_more_collections__HashMap2___91d_93d_61d(val* self, val* p0, val* p1, val* p2) {
-more_collections__HashMap2___91d_93d_61d(self, p0, p1, p2); /* Direct call more_collections#HashMap2#[]= on <self:Object(HashMap2[Object, Object, nullable Object])>*/
-RET_LABEL:;
+var19 = var21;
+goto RET_LABEL20;
+RET_LABEL20:(void)0;
 }
-/* method more_collections#HashMap2#init for (self: HashMap2[Object, Object, nullable Object]) */
-void more_collections__HashMap2__init(val* self) {
-RET_LABEL:;
+var18 = var19;
 }
-/* method more_collections#HashMap2#init for (self: Object) */
-void VIRTUAL_more_collections__HashMap2__init(val* self) {
-{ /* Inline more_collections#HashMap2#init (self) on <self:Object(HashMap2[Object, Object, nullable Object])> */
-RET_LABEL1:(void)0;
+if (var18){
+var24 = NEW_standard__HashMap(self->type->resolution_table->types[COLOR_standard__HashMap__more_collections__HashMap2___35dK2__more_collections__HashMap2___35dV]);
+{
+standard___standard__HashMap___standard__kernel__Object__init(var24); /* Direct call hash_collection#HashMap#init on <var24:HashMap[nullable Object, nullable Object]>*/
 }
-RET_LABEL:;
+var_level2 = var24;
+{
+standard___standard__HashMap___standard__abstract_collection__Map___91d_93d_61d(var_level1, var_k1, var_level2); /* Direct call hash_collection#HashMap#[]= on <var_level1:HashMap[nullable Object, HashMap[nullable Object, nullable Object]]>*/
 }
-/* method more_collections#HashMap3#level1 for (self: HashMap3[Object, Object, Object, nullable Object]): HashMap[Object, HashMap2[Object, Object, nullable Object]] */
-val* more_collections__HashMap3__level1(val* self) {
-val* var /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-val* var1 /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-var1 = self->attrs[COLOR_more_collections__HashMap3___level1].val; /* _level1 on <self:HashMap3[Object, Object, Object, nullable Object]> */
-if (unlikely(var1 == NULL)) {
-PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _level1");
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 87);
-show_backtrace(1);
+} else {
+}
+{
+standard___standard__HashMap___standard__abstract_collection__Map___91d_93d_61d(var_level2, var_k2, var_v); /* Direct call hash_collection#HashMap#[]= on <var_level2:nullable HashMap[nullable Object, nullable Object](HashMap[nullable Object, nullable Object])>*/
 }
-var = var1;
 RET_LABEL:;
-return var;
 }
-/* method more_collections#HashMap3#level1 for (self: Object): HashMap[Object, HashMap2[Object, Object, nullable Object]] */
-val* VIRTUAL_more_collections__HashMap3__level1(val* self) {
-val* var /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-val* var1 /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-val* var3 /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-{ /* Inline more_collections#HashMap3#level1 (self) on <self:Object(HashMap3[Object, Object, Object, nullable Object])> */
-var3 = self->attrs[COLOR_more_collections__HashMap3___level1].val; /* _level1 on <self:Object(HashMap3[Object, Object, Object, nullable Object])> */
-if (unlikely(var3 == NULL)) {
+/* method more_collections#HashMap3#level1 for (self: HashMap3[nullable Object, nullable Object, nullable Object, nullable Object]): HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */
+val* more_collections___more_collections__HashMap3___level1(val* self) {
+val* var /* : HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */;
+val* var1 /* : HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */;
+var1 = self->attrs[COLOR_more_collections__HashMap3___level1].val; /* _level1 on <self:HashMap3[nullable Object, nullable Object, nullable Object, nullable Object]> */
+if (unlikely(var1 == NULL)) {
 PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _level1");
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 87);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 108);
 show_backtrace(1);
 }
-var1 = var3;
-RET_LABEL2:(void)0;
-}
 var = var1;
 RET_LABEL:;
 return var;
 }
-/* method more_collections#HashMap3#[] for (self: HashMap3[Object, Object, Object, nullable Object], Object, Object, Object): nullable Object */
-val* more_collections__HashMap3___91d_93d(val* self, val* p0, val* p1, val* p2) {
+/* method more_collections#HashMap3#[] for (self: HashMap3[nullable Object, nullable Object, nullable Object, nullable Object], nullable Object, nullable Object, nullable Object): nullable Object */
+val* more_collections___more_collections__HashMap3____91d_93d(val* self, val* p0, val* p1, val* p2) {
 val* var /* : nullable Object */;
 short int var1 /* : Bool */;
 int cltype;
 int idtype;
 const struct type* type_struct;
+short int is_nullable;
 const char* var_class_name;
 short int var2 /* : Bool */;
 int cltype3;
 int idtype4;
 const struct type* type_struct5;
-const char* var_class_name6;
-short int var7 /* : Bool */;
-int cltype8;
-int idtype9;
-const struct type* type_struct10;
-const char* var_class_name11;
-val* var_k1 /* var k1: Object */;
-val* var_k2 /* var k2: Object */;
-val* var_k3 /* var k3: Object */;
-val* var12 /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-val* var14 /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-val* var_level1 /* var level1: HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-short int var15 /* : Bool */;
-short int var16 /* : Bool */;
-val* var17 /* : null */;
-val* var18 /* : nullable Object */;
-val* var_level2 /* var level2: HashMap2[Object, Object, nullable Object] */;
-val* var19 /* : nullable Object */;
-/* Covariant cast for argument 0 (k1) <p0:Object> isa HashMap3#0 */
-/* <p0:Object> isa HashMap3#0 */
-type_struct = self->type->resolution_table->types[COLOR_more_collections__HashMap3_FT0];
+short int is_nullable6;
+const char* var_class_name7;
+short int var8 /* : Bool */;
+int cltype9;
+int idtype10;
+const struct type* type_struct11;
+short int is_nullable12;
+const char* var_class_name13;
+val* var_k1 /* var k1: nullable Object */;
+val* var_k2 /* var k2: nullable Object */;
+val* var_k3 /* var k3: nullable Object */;
+val* var14 /* : HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */;
+val* var16 /* : HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */;
+val* var_level1 /* var level1: HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */;
+val* var17 /* : nullable Object */;
+val* var_level2 /* var level2: nullable HashMap2[nullable Object, nullable Object, nullable Object] */;
+val* var18 /* : null */;
+short int var19 /* : Bool */;
+short int var20 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var22 /* : Bool */;
+short int var24 /* : Bool */;
+val* var25 /* : null */;
+val* var26 /* : nullable Object */;
+/* Covariant cast for argument 0 (k1) <p0:nullable Object> isa K1 */
+/* <p0:nullable Object> isa K1 */
+type_struct = self->type->resolution_table->types[COLOR_more_collections__HashMap3___35dK1];
 cltype = type_struct->color;
 idtype = type_struct->id;
+is_nullable = type_struct->is_nullable;
+if(p0 == NULL) {
+var1 = is_nullable;
+} else {
 if(cltype >= p0->type->table_size) {
 var1 = 0;
 } else {
 var1 = p0->type->type_table[cltype] == idtype;
 }
+}
 if (unlikely(!var1)) {
 var_class_name = p0 == NULL ? "null" : p0->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap3#0", var_class_name);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 89);
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K1", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 110);
 show_backtrace(1);
 }
-/* Covariant cast for argument 1 (k2) <p1:Object> isa HashMap3#1 */
-/* <p1:Object> isa HashMap3#1 */
-type_struct5 = self->type->resolution_table->types[COLOR_more_collections__HashMap3_FT1];
+/* Covariant cast for argument 1 (k2) <p1:nullable Object> isa K2 */
+/* <p1:nullable Object> isa K2 */
+type_struct5 = self->type->resolution_table->types[COLOR_more_collections__HashMap3___35dK2];
 cltype3 = type_struct5->color;
 idtype4 = type_struct5->id;
+is_nullable6 = type_struct5->is_nullable;
+if(p1 == NULL) {
+var2 = is_nullable6;
+} else {
 if(cltype3 >= p1->type->table_size) {
 var2 = 0;
 } else {
 var2 = p1->type->type_table[cltype3] == idtype4;
 }
+}
 if (unlikely(!var2)) {
-var_class_name6 = p1 == NULL ? "null" : p1->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap3#1", var_class_name6);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 89);
+var_class_name7 = p1 == NULL ? "null" : p1->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K2", var_class_name7);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 110);
 show_backtrace(1);
 }
-/* Covariant cast for argument 2 (k3) <p2:Object> isa HashMap3#2 */
-/* <p2:Object> isa HashMap3#2 */
-type_struct10 = self->type->resolution_table->types[COLOR_more_collections__HashMap3_FT2];
-cltype8 = type_struct10->color;
-idtype9 = type_struct10->id;
-if(cltype8 >= p2->type->table_size) {
-var7 = 0;
+/* Covariant cast for argument 2 (k3) <p2:nullable Object> isa K3 */
+/* <p2:nullable Object> isa K3 */
+type_struct11 = self->type->resolution_table->types[COLOR_more_collections__HashMap3___35dK3];
+cltype9 = type_struct11->color;
+idtype10 = type_struct11->id;
+is_nullable12 = type_struct11->is_nullable;
+if(p2 == NULL) {
+var8 = is_nullable12;
 } else {
-var7 = p2->type->type_table[cltype8] == idtype9;
+if(cltype9 >= p2->type->table_size) {
+var8 = 0;
+} else {
+var8 = p2->type->type_table[cltype9] == idtype10;
 }
-if (unlikely(!var7)) {
-var_class_name11 = p2 == NULL ? "null" : p2->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap3#2", var_class_name11);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 89);
+}
+if (unlikely(!var8)) {
+var_class_name13 = p2 == NULL ? "null" : p2->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K3", var_class_name13);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 110);
 show_backtrace(1);
 }
 var_k1 = p0;
 var_k2 = p1;
 var_k3 = p2;
 {
-{ /* Inline more_collections#HashMap3#level1 (self) on <self:HashMap3[Object, Object, Object, nullable Object]> */
-var14 = self->attrs[COLOR_more_collections__HashMap3___level1].val; /* _level1 on <self:HashMap3[Object, Object, Object, nullable Object]> */
-if (unlikely(var14 == NULL)) {
+{ /* Inline more_collections#HashMap3#level1 (self) on <self:HashMap3[nullable Object, nullable Object, nullable Object, nullable Object]> */
+var16 = self->attrs[COLOR_more_collections__HashMap3___level1].val; /* _level1 on <self:HashMap3[nullable Object, nullable Object, nullable Object, nullable Object]> */
+if (unlikely(var16 == NULL)) {
 PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _level1");
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 87);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 108);
 show_backtrace(1);
 }
-var12 = var14;
-RET_LABEL13:(void)0;
+var14 = var16;
+RET_LABEL15:(void)0;
 }
 }
-var_level1 = var12;
+var_level1 = var14;
 {
-var15 = abstract_collection__MapRead__has_key(var_level1, var_k1);
+var17 = standard___standard__HashMap___standard__abstract_collection__MapRead__get_or_null(var_level1, var_k1);
 }
-var16 = !var15;
-if (var16){
-var17 = NULL;
-var = var17;
-goto RET_LABEL;
+var_level2 = var17;
+var18 = NULL;
+if (var_level2 == NULL) {
+var19 = 1; /* is null */
 } else {
+var19 = 0; /* arg is null but recv is not */
 }
+if (0) {
+{ /* Inline kernel#Object#== (var_level2,var18) on <var_level2:nullable HashMap2[nullable Object, nullable Object, nullable Object]> */
+var_other = var18;
 {
-var18 = hash_collection__HashMap___91d_93d(var_level1, var_k1);
+{ /* Inline kernel#Object#is_same_instance (var_level2,var_other) on <var_level2:nullable HashMap2[nullable Object, nullable Object, nullable Object](HashMap2[nullable Object, nullable Object, nullable Object])> */
+var24 = var_level2 == var_other;
+var22 = var24;
+goto RET_LABEL23;
+RET_LABEL23:(void)0;
 }
-var_level2 = var18;
-{
-var19 = more_collections__HashMap2___91d_93d(var_level2, var_k2, var_k3);
 }
-var = var19;
+var20 = var22;
+goto RET_LABEL21;
+RET_LABEL21:(void)0;
+}
+var19 = var20;
+}
+if (var19){
+var25 = NULL;
+var = var25;
 goto RET_LABEL;
-RET_LABEL:;
-return var;
+} else {
 }
-/* method more_collections#HashMap3#[] for (self: Object, Object, Object, Object): nullable Object */
-val* VIRTUAL_more_collections__HashMap3___91d_93d(val* self, val* p0, val* p1, val* p2) {
-val* var /* : nullable Object */;
-val* var1 /* : nullable Object */;
-var1 = more_collections__HashMap3___91d_93d(self, p0, p1, p2);
-var = var1;
+{
+var26 = more_collections___more_collections__HashMap2____91d_93d(var_level2, var_k2, var_k3);
+}
+var = var26;
+goto RET_LABEL;
 RET_LABEL:;
 return var;
 }
-/* method more_collections#HashMap3#[]= for (self: HashMap3[Object, Object, Object, nullable Object], Object, Object, Object, nullable Object) */
-void more_collections__HashMap3___91d_93d_61d(val* self, val* p0, val* p1, val* p2, val* p3) {
+/* method more_collections#HashMap3#[]= for (self: HashMap3[nullable Object, nullable Object, nullable Object, nullable Object], nullable Object, nullable Object, nullable Object, nullable Object) */
+void more_collections___more_collections__HashMap3____91d_93d_61d(val* self, val* p0, val* p1, val* p2, val* p3) {
 short int var /* : Bool */;
 int cltype;
 int idtype;
 const struct type* type_struct;
+short int is_nullable;
 const char* var_class_name;
 short int var1 /* : Bool */;
 int cltype2;
 int idtype3;
 const struct type* type_struct4;
-const char* var_class_name5;
-short int var6 /* : Bool */;
-int cltype7;
-int idtype8;
-const struct type* type_struct9;
-const char* var_class_name10;
-short int var11 /* : Bool */;
-int cltype12;
-int idtype13;
-const struct type* type_struct14;
-short int is_nullable;
-const char* var_class_name15;
-val* var_k1 /* var k1: Object */;
-val* var_k2 /* var k2: Object */;
-val* var_k3 /* var k3: Object */;
+short int is_nullable5;
+const char* var_class_name6;
+short int var7 /* : Bool */;
+int cltype8;
+int idtype9;
+const struct type* type_struct10;
+short int is_nullable11;
+const char* var_class_name12;
+short int var13 /* : Bool */;
+int cltype14;
+int idtype15;
+const struct type* type_struct16;
+short int is_nullable17;
+const char* var_class_name18;
+val* var_k1 /* var k1: nullable Object */;
+val* var_k2 /* var k2: nullable Object */;
+val* var_k3 /* var k3: nullable Object */;
 val* var_v /* var v: nullable Object */;
-val* var16 /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-val* var18 /* : HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-val* var_level1 /* var level1: HashMap[Object, HashMap2[Object, Object, nullable Object]] */;
-short int var19 /* : Bool */;
-short int var20 /* : Bool */;
-val* var21 /* : HashMap2[Object, Object, nullable Object] */;
-val* var_level2 /* var level2: HashMap2[Object, Object, nullable Object] */;
-val* var23 /* : nullable Object */;
-/* Covariant cast for argument 0 (k1) <p0:Object> isa HashMap3#0 */
-/* <p0:Object> isa HashMap3#0 */
-type_struct = self->type->resolution_table->types[COLOR_more_collections__HashMap3_FT0];
+val* var19 /* : HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */;
+val* var21 /* : HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */;
+val* var_level1 /* var level1: HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]] */;
+val* var22 /* : nullable Object */;
+val* var_level2 /* var level2: nullable HashMap2[nullable Object, nullable Object, nullable Object] */;
+val* var23 /* : null */;
+short int var24 /* : Bool */;
+short int var25 /* : Bool */;
+val* var_other /* var other: nullable Object */;
+short int var27 /* : Bool */;
+short int var29 /* : Bool */;
+val* var30 /* : HashMap2[nullable Object, nullable Object, nullable Object] */;
+/* Covariant cast for argument 0 (k1) <p0:nullable Object> isa K1 */
+/* <p0:nullable Object> isa K1 */
+type_struct = self->type->resolution_table->types[COLOR_more_collections__HashMap3___35dK1];
 cltype = type_struct->color;
 idtype = type_struct->id;
+is_nullable = type_struct->is_nullable;
+if(p0 == NULL) {
+var = is_nullable;
+} else {
 if(cltype >= p0->type->table_size) {
 var = 0;
 } else {
 var = p0->type->type_table[cltype] == idtype;
 }
+}
 if (unlikely(!var)) {
 var_class_name = p0 == NULL ? "null" : p0->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap3#0", var_class_name);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 99);
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K1", var_class_name);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 120);
 show_backtrace(1);
 }
-/* Covariant cast for argument 1 (k2) <p1:Object> isa HashMap3#1 */
-/* <p1:Object> isa HashMap3#1 */
-type_struct4 = self->type->resolution_table->types[COLOR_more_collections__HashMap3_FT1];
+/* Covariant cast for argument 1 (k2) <p1:nullable Object> isa K2 */
+/* <p1:nullable Object> isa K2 */
+type_struct4 = self->type->resolution_table->types[COLOR_more_collections__HashMap3___35dK2];
 cltype2 = type_struct4->color;
 idtype3 = type_struct4->id;
+is_nullable5 = type_struct4->is_nullable;
+if(p1 == NULL) {
+var1 = is_nullable5;
+} else {
 if(cltype2 >= p1->type->table_size) {
 var1 = 0;
 } else {
 var1 = p1->type->type_table[cltype2] == idtype3;
 }
+}
 if (unlikely(!var1)) {
-var_class_name5 = p1 == NULL ? "null" : p1->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap3#1", var_class_name5);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 99);
+var_class_name6 = p1 == NULL ? "null" : p1->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K2", var_class_name6);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 120);
 show_backtrace(1);
 }
-/* Covariant cast for argument 2 (k3) <p2:Object> isa HashMap3#2 */
-/* <p2:Object> isa HashMap3#2 */
-type_struct9 = self->type->resolution_table->types[COLOR_more_collections__HashMap3_FT2];
-cltype7 = type_struct9->color;
-idtype8 = type_struct9->id;
-if(cltype7 >= p2->type->table_size) {
-var6 = 0;
+/* Covariant cast for argument 2 (k3) <p2:nullable Object> isa K3 */
+/* <p2:nullable Object> isa K3 */
+type_struct10 = self->type->resolution_table->types[COLOR_more_collections__HashMap3___35dK3];
+cltype8 = type_struct10->color;
+idtype9 = type_struct10->id;
+is_nullable11 = type_struct10->is_nullable;
+if(p2 == NULL) {
+var7 = is_nullable11;
+} else {
+if(cltype8 >= p2->type->table_size) {
+var7 = 0;
 } else {
-var6 = p2->type->type_table[cltype7] == idtype8;
+var7 = p2->type->type_table[cltype8] == idtype9;
 }
-if (unlikely(!var6)) {
-var_class_name10 = p2 == NULL ? "null" : p2->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap3#2", var_class_name10);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 99);
+}
+if (unlikely(!var7)) {
+var_class_name12 = p2 == NULL ? "null" : p2->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "K3", var_class_name12);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 120);
 show_backtrace(1);
 }
-/* Covariant cast for argument 3 (v) <p3:nullable Object> isa HashMap3#3 */
-/* <p3:nullable Object> isa HashMap3#3 */
-type_struct14 = self->type->resolution_table->types[COLOR_more_collections__HashMap3_FT3];
-cltype12 = type_struct14->color;
-idtype13 = type_struct14->id;
-is_nullable = type_struct14->is_nullable;
+/* Covariant cast for argument 3 (v) <p3:nullable Object> isa V */
+/* <p3:nullable Object> isa V */
+type_struct16 = self->type->resolution_table->types[COLOR_more_collections__HashMap3___35dV];
+cltype14 = type_struct16->color;
+idtype15 = type_struct16->id;
+is_nullable17 = type_struct16->is_nullable;
 if(p3 == NULL) {
-var11 = is_nullable;
+var13 = is_nullable17;
 } else {
-if(cltype12 >= p3->type->table_size) {
-var11 = 0;
+if(cltype14 >= p3->type->table_size) {
+var13 = 0;
 } else {
-var11 = p3->type->type_table[cltype12] == idtype13;
+var13 = p3->type->type_table[cltype14] == idtype15;
 }
 }
-if (unlikely(!var11)) {
-var_class_name15 = p3 == NULL ? "null" : p3->type->name;
-PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "HashMap3#3", var_class_name15);
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 99);
+if (unlikely(!var13)) {
+var_class_name18 = p3 == NULL ? "null" : p3->type->name;
+PRINT_ERROR("Runtime error: Cast failed. Expected `%s`, got `%s`", "V", var_class_name18);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 120);
 show_backtrace(1);
 }
 var_k1 = p0;
@@ -704,57 +761,60 @@ var_k2 = p1;
 var_k3 = p2;
 var_v = p3;
 {
-{ /* Inline more_collections#HashMap3#level1 (self) on <self:HashMap3[Object, Object, Object, nullable Object]> */
-var18 = self->attrs[COLOR_more_collections__HashMap3___level1].val; /* _level1 on <self:HashMap3[Object, Object, Object, nullable Object]> */
-if (unlikely(var18 == NULL)) {
+{ /* Inline more_collections#HashMap3#level1 (self) on <self:HashMap3[nullable Object, nullable Object, nullable Object, nullable Object]> */
+var21 = self->attrs[COLOR_more_collections__HashMap3___level1].val; /* _level1 on <self:HashMap3[nullable Object, nullable Object, nullable Object, nullable Object]> */
+if (unlikely(var21 == NULL)) {
 PRINT_ERROR("Runtime error: %s", "Uninitialized attribute _level1");
-PRINT_ERROR(" (%s:%d)\n", "lib/more_collections.nit", 87);
+PRINT_ERROR(" (%s:%d)\n", FILE_more_collections, 108);
 show_backtrace(1);
 }
-var16 = var18;
-RET_LABEL17:(void)0;
+var19 = var21;
+RET_LABEL20:(void)0;
 }
 }
-var_level1 = var16;
+var_level1 = var19;
 {
-var19 = abstract_collection__MapRead__has_key(var_level1, var_k1);
-}
-var20 = !var19;
-if (var20){
-var21 = NEW_more_collections__HashMap2(self->type->resolution_table->types[COLOR_more_collections__HashMap2more_collections__HashMap3_FT1more_collections__HashMap3_FT2more_collections__HashMap3_FT3]);
-{
-{ /* Inline more_collections#HashMap2#init (var21) on <var21:HashMap2[Object, Object, nullable Object]> */
-RET_LABEL22:(void)0;
+var22 = standard___standard__HashMap___standard__abstract_collection__MapRead__get_or_null(var_level1, var_k1);
 }
+var_level2 = var22;
+var23 = NULL;
+if (var_level2 == NULL) {
+var24 = 1; /* is null */
+} else {
+var24 = 0; /* arg is null but recv is not */
 }
-var_level2 = var21;
+if (0) {
+{ /* Inline kernel#Object#== (var_level2,var23) on <var_level2:nullable HashMap2[nullable Object, nullable Object, nullable Object]> */
+var_other = var23;
 {
-hash_collection__HashMap___91d_93d_61d(var_level1, var_k1, var_level2); /* Direct call hash_collection#HashMap#[]= on <var_level1:HashMap[Object, HashMap2[Object, Object, nullable Object]]>*/
+{ /* Inline kernel#Object#is_same_instance (var_level2,var_other) on <var_level2:nullable HashMap2[nullable Object, nullable Object, nullable Object](HashMap2[nullable Object, nullable Object, nullable Object])> */
+var29 = var_level2 == var_other;
+var27 = var29;
+goto RET_LABEL28;
+RET_LABEL28:(void)0;
 }
-} else {
-{
-var23 = hash_collection__HashMap___91d_93d(var_level1, var_k1);
 }
-var_level2 = var23;
+var25 = var27;
+goto RET_LABEL26;
+RET_LABEL26:(void)0;
+}
+var24 = var25;
 }
+if (var24){
+var30 = NEW_more_collections__HashMap2(self->type->resolution_table->types[COLOR_more_collections__HashMap2__more_collections__HashMap3___35dK2__more_collections__HashMap3___35dK3__more_collections__HashMap3___35dV]);
 {
-more_collections__HashMap2___91d_93d_61d(var_level2, var_k2, var_k3, var_v); /* Direct call more_collections#HashMap2#[]= on <var_level2:HashMap2[Object, Object, nullable Object]>*/
+{ /* Inline kernel#Object#init (var30) on <var30:HashMap2[nullable Object, nullable Object, nullable Object]> */
+RET_LABEL31:(void)0;
 }
-RET_LABEL:;
 }
-/* method more_collections#HashMap3#[]= for (self: Object, Object, Object, Object, nullable Object) */
-void VIRTUAL_more_collections__HashMap3___91d_93d_61d(val* self, val* p0, val* p1, val* p2, val* p3) {
-more_collections__HashMap3___91d_93d_61d(self, p0, p1, p2, p3); /* Direct call more_collections#HashMap3#[]= on <self:Object(HashMap3[Object, Object, Object, nullable Object])>*/
-RET_LABEL:;
+var_level2 = var30;
+{
+standard___standard__HashMap___standard__abstract_collection__Map___91d_93d_61d(var_level1, var_k1, var_level2); /* Direct call hash_collection#HashMap#[]= on <var_level1:HashMap[nullable Object, HashMap2[nullable Object, nullable Object, nullable Object]]>*/
 }
-/* method more_collections#HashMap3#init for (self: HashMap3[Object, Object, Object, nullable Object]) */
-void more_collections__HashMap3__init(val* self) {
-RET_LABEL:;
+} else {
 }
-/* method more_collections#HashMap3#init for (self: Object) */
-void VIRTUAL_more_collections__HashMap3__init(val* self) {
-{ /* Inline more_collections#HashMap3#init (self) on <self:Object(HashMap3[Object, Object, Object, nullable Object])> */
-RET_LABEL1:(void)0;
+{
+more_collections___more_collections__HashMap2____91d_93d_61d(var_level2, var_k2, var_k3, var_v); /* Direct call more_collections#HashMap2#[]= on <var_level2:nullable HashMap2[nullable Object, nullable Object, nullable Object](HashMap2[nullable Object, nullable Object, nullable Object])>*/
 }
 RET_LABEL:;
 }