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Issue 2028983002: Introduce IsUndefined(Isolate*) and IsTheHole(Isolate*) (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: fixing wrongly wrapped lines Created 4 years, 6 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/runtime/runtime-utils.h" 5 #include "src/runtime/runtime-utils.h"
6 6
7 #include <stdlib.h> 7 #include <stdlib.h>
8 #include <limits> 8 #include <limits>
9 9
10 #include "src/arguments.h" 10 #include "src/arguments.h"
(...skipping 70 matching lines...) Expand 10 before | Expand all | Expand 10 after
81 return isolate->heap()->home_object_symbol(); 81 return isolate->heap()->home_object_symbol();
82 } 82 }
83 83
84 static MaybeHandle<Object> DefineClass(Isolate* isolate, 84 static MaybeHandle<Object> DefineClass(Isolate* isolate,
85 Handle<Object> super_class, 85 Handle<Object> super_class,
86 Handle<JSFunction> constructor, 86 Handle<JSFunction> constructor,
87 int start_position, int end_position) { 87 int start_position, int end_position) {
88 Handle<Object> prototype_parent; 88 Handle<Object> prototype_parent;
89 Handle<Object> constructor_parent; 89 Handle<Object> constructor_parent;
90 90
91 if (super_class->IsTheHole()) { 91 if (super_class->IsTheHole(isolate)) {
92 prototype_parent = isolate->initial_object_prototype(); 92 prototype_parent = isolate->initial_object_prototype();
93 } else { 93 } else {
94 if (super_class->IsNull()) { 94 if (super_class->IsNull()) {
95 prototype_parent = isolate->factory()->null_value(); 95 prototype_parent = isolate->factory()->null_value();
96 } else if (super_class->IsConstructor()) { 96 } else if (super_class->IsConstructor()) {
97 if (super_class->IsJSFunction() && 97 if (super_class->IsJSFunction() &&
98 Handle<JSFunction>::cast(super_class)->shared()->is_generator()) { 98 Handle<JSFunction>::cast(super_class)->shared()->is_generator()) {
99 THROW_NEW_ERROR( 99 THROW_NEW_ERROR(
100 isolate, 100 isolate,
101 NewTypeError(MessageTemplate::kExtendsValueGenerator, super_class), 101 NewTypeError(MessageTemplate::kExtendsValueGenerator, super_class),
(...skipping 19 matching lines...) Expand all
121 } 121 }
122 } 122 }
123 123
124 Handle<Map> map = 124 Handle<Map> map =
125 isolate->factory()->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize); 125 isolate->factory()->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize);
126 map->set_is_prototype_map(true); 126 map->set_is_prototype_map(true);
127 Map::SetPrototype(map, prototype_parent); 127 Map::SetPrototype(map, prototype_parent);
128 map->SetConstructor(*constructor); 128 map->SetConstructor(*constructor);
129 Handle<JSObject> prototype = isolate->factory()->NewJSObjectFromMap(map); 129 Handle<JSObject> prototype = isolate->factory()->NewJSObjectFromMap(map);
130 130
131 if (!super_class->IsTheHole()) { 131 if (!super_class->IsTheHole(isolate)) {
132 // Derived classes, just like builtins, don't create implicit receivers in 132 // Derived classes, just like builtins, don't create implicit receivers in
133 // [[construct]]. Instead they just set up new.target and call into the 133 // [[construct]]. Instead they just set up new.target and call into the
134 // constructor. Hence we can reuse the builtins construct stub for derived 134 // constructor. Hence we can reuse the builtins construct stub for derived
135 // classes. 135 // classes.
136 Handle<Code> stub(isolate->builtins()->JSBuiltinsConstructStubForDerived()); 136 Handle<Code> stub(isolate->builtins()->JSBuiltinsConstructStubForDerived());
137 constructor->shared()->set_construct_stub(*stub); 137 constructor->shared()->set_construct_stub(*stub);
138 } 138 }
139 139
140 JSFunction::SetPrototype(constructor, prototype); 140 JSFunction::SetPrototype(constructor, prototype);
141 PropertyAttributes attribs = 141 PropertyAttributes attribs =
(...skipping 252 matching lines...) Expand 10 before | Expand all | Expand 10 after
394 394
395 RUNTIME_FUNCTION(Runtime_GetSuperConstructor) { 395 RUNTIME_FUNCTION(Runtime_GetSuperConstructor) {
396 SealHandleScope shs(isolate); 396 SealHandleScope shs(isolate);
397 DCHECK_EQ(1, args.length()); 397 DCHECK_EQ(1, args.length());
398 CONVERT_ARG_CHECKED(JSFunction, active_function, 0); 398 CONVERT_ARG_CHECKED(JSFunction, active_function, 0);
399 return active_function->map()->prototype(); 399 return active_function->map()->prototype();
400 } 400 }
401 401
402 } // namespace internal 402 } // namespace internal
403 } // namespace v8 403 } // namespace v8
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