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| 1 /* | |
| 2 * Copyright (C) 2012 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "bindings/core/v8/V8PerContextData.h" | |
| 32 | |
| 33 #include <stdlib.h> | |
| 34 #include <memory> | |
| 35 #include "bindings/core/v8/ConditionalFeatures.h" | |
| 36 #include "bindings/core/v8/ScriptState.h" | |
| 37 #include "bindings/core/v8/V8Binding.h" | |
| 38 #include "bindings/core/v8/V8ObjectConstructor.h" | |
| 39 #include "platform/InstanceCounters.h" | |
| 40 #include "platform/wtf/PtrUtil.h" | |
| 41 #include "platform/wtf/StringExtras.h" | |
| 42 | |
| 43 namespace blink { | |
| 44 | |
| 45 V8PerContextData::V8PerContextData(v8::Local<v8::Context> context) | |
| 46 : isolate_(context->GetIsolate()), | |
| 47 wrapper_boilerplates_(isolate_), | |
| 48 constructor_map_(isolate_), | |
| 49 context_holder_(WTF::MakeUnique<gin::ContextHolder>(isolate_)), | |
| 50 context_(isolate_, context), | |
| 51 activity_logger_(nullptr) { | |
| 52 context_holder_->SetContext(context); | |
| 53 | |
| 54 v8::Context::Scope context_scope(context); | |
| 55 DCHECK(error_prototype_.IsEmpty()); | |
| 56 v8::Local<v8::Value> object_value = | |
| 57 context->Global() | |
| 58 ->Get(context, V8AtomicString(isolate_, "Error")) | |
| 59 .ToLocalChecked(); | |
| 60 v8::Local<v8::Value> prototype_value = | |
| 61 object_value.As<v8::Object>() | |
| 62 ->Get(context, V8AtomicString(isolate_, "prototype")) | |
| 63 .ToLocalChecked(); | |
| 64 error_prototype_.Set(isolate_, prototype_value); | |
| 65 | |
| 66 if (IsMainThread()) | |
| 67 InstanceCounters::IncrementCounter( | |
| 68 InstanceCounters::kV8PerContextDataCounter); | |
| 69 } | |
| 70 | |
| 71 V8PerContextData::~V8PerContextData() { | |
| 72 if (IsMainThread()) | |
| 73 InstanceCounters::DecrementCounter( | |
| 74 InstanceCounters::kV8PerContextDataCounter); | |
| 75 } | |
| 76 | |
| 77 std::unique_ptr<V8PerContextData> V8PerContextData::Create( | |
| 78 v8::Local<v8::Context> context) { | |
| 79 return WTF::WrapUnique(new V8PerContextData(context)); | |
| 80 } | |
| 81 | |
| 82 V8PerContextData* V8PerContextData::From(v8::Local<v8::Context> context) { | |
| 83 return ScriptState::From(context)->PerContextData(); | |
| 84 } | |
| 85 | |
| 86 v8::Local<v8::Object> V8PerContextData::CreateWrapperFromCacheSlowCase( | |
| 87 const WrapperTypeInfo* type) { | |
| 88 DCHECK(!error_prototype_.IsEmpty()); | |
| 89 | |
| 90 v8::Context::Scope scope(GetContext()); | |
| 91 v8::Local<v8::Function> interface_object = ConstructorForType(type); | |
| 92 if (interface_object.IsEmpty()) | |
| 93 return v8::Local<v8::Object>(); | |
| 94 v8::Local<v8::Object> instance_template; | |
| 95 if (!V8ObjectConstructor::NewInstance(isolate_, interface_object) | |
| 96 .ToLocal(&instance_template)) | |
| 97 return v8::Local<v8::Object>(); | |
| 98 wrapper_boilerplates_.Set(type, instance_template); | |
| 99 return instance_template->Clone(); | |
| 100 } | |
| 101 | |
| 102 v8::Local<v8::Function> V8PerContextData::ConstructorForTypeSlowCase( | |
| 103 const WrapperTypeInfo* type) { | |
| 104 DCHECK(!error_prototype_.IsEmpty()); | |
| 105 | |
| 106 v8::Local<v8::Context> current_context = GetContext(); | |
| 107 v8::Context::Scope scope(current_context); | |
| 108 const DOMWrapperWorld& world = DOMWrapperWorld::World(current_context); | |
| 109 // We shouldn't reach this point for the types that are implemented in v8 such | |
| 110 // as typed arrays and hence don't have domTemplateFunction. | |
| 111 DCHECK(type->dom_template_function); | |
| 112 v8::Local<v8::FunctionTemplate> interface_template = | |
| 113 type->domTemplate(isolate_, world); | |
| 114 // Getting the function might fail if we're running out of stack or memory. | |
| 115 v8::Local<v8::Function> interface_object; | |
| 116 if (!interface_template->GetFunction(current_context) | |
| 117 .ToLocal(&interface_object)) | |
| 118 return v8::Local<v8::Function>(); | |
| 119 | |
| 120 if (type->parent_class) { | |
| 121 v8::Local<v8::Object> prototype_template = | |
| 122 ConstructorForType(type->parent_class); | |
| 123 if (prototype_template.IsEmpty()) | |
| 124 return v8::Local<v8::Function>(); | |
| 125 if (!V8CallBoolean(interface_object->SetPrototype(current_context, | |
| 126 prototype_template))) | |
| 127 return v8::Local<v8::Function>(); | |
| 128 } | |
| 129 | |
| 130 v8::Local<v8::Value> prototype_value; | |
| 131 if (!interface_object | |
| 132 ->Get(current_context, V8AtomicString(isolate_, "prototype")) | |
| 133 .ToLocal(&prototype_value) || | |
| 134 !prototype_value->IsObject()) | |
| 135 return v8::Local<v8::Function>(); | |
| 136 v8::Local<v8::Object> prototype_object = prototype_value.As<v8::Object>(); | |
| 137 if (prototype_object->InternalFieldCount() == | |
| 138 kV8PrototypeInternalFieldcount && | |
| 139 type->wrapper_type_prototype == | |
| 140 WrapperTypeInfo::kWrapperTypeObjectPrototype) | |
| 141 prototype_object->SetAlignedPointerInInternalField( | |
| 142 kV8PrototypeTypeIndex, const_cast<WrapperTypeInfo*>(type)); | |
| 143 type->PreparePrototypeAndInterfaceObject(current_context, world, | |
| 144 prototype_object, interface_object, | |
| 145 interface_template); | |
| 146 if (type->wrapper_type_prototype == | |
| 147 WrapperTypeInfo::kWrapperTypeExceptionPrototype) { | |
| 148 if (!V8CallBoolean(prototype_object->SetPrototype( | |
| 149 current_context, error_prototype_.NewLocal(isolate_)))) | |
| 150 return v8::Local<v8::Function>(); | |
| 151 } | |
| 152 | |
| 153 // Origin Trials | |
| 154 InstallConditionalFeatures(type, ScriptState::From(current_context), | |
| 155 prototype_object, interface_object); | |
| 156 | |
| 157 constructor_map_.Set(type, interface_object); | |
| 158 | |
| 159 return interface_object; | |
| 160 } | |
| 161 | |
| 162 v8::Local<v8::Object> V8PerContextData::PrototypeForType( | |
| 163 const WrapperTypeInfo* type) { | |
| 164 v8::Local<v8::Object> constructor = ConstructorForType(type); | |
| 165 if (constructor.IsEmpty()) | |
| 166 return v8::Local<v8::Object>(); | |
| 167 v8::Local<v8::Value> prototype_value; | |
| 168 if (!constructor->Get(GetContext(), V8String(isolate_, "prototype")) | |
| 169 .ToLocal(&prototype_value) || | |
| 170 !prototype_value->IsObject()) | |
| 171 return v8::Local<v8::Object>(); | |
| 172 return prototype_value.As<v8::Object>(); | |
| 173 } | |
| 174 | |
| 175 bool V8PerContextData::GetExistingConstructorAndPrototypeForType( | |
| 176 const WrapperTypeInfo* type, | |
| 177 v8::Local<v8::Object>* prototype_object, | |
| 178 v8::Local<v8::Function>* interface_object) { | |
| 179 *interface_object = constructor_map_.Get(type); | |
| 180 if (interface_object->IsEmpty()) { | |
| 181 *prototype_object = v8::Local<v8::Object>(); | |
| 182 return false; | |
| 183 } | |
| 184 *prototype_object = PrototypeForType(type); | |
| 185 DCHECK(!prototype_object->IsEmpty()); | |
| 186 return true; | |
| 187 } | |
| 188 | |
| 189 void V8PerContextData::AddCustomElementBinding( | |
| 190 std::unique_ptr<V0CustomElementBinding> binding) { | |
| 191 custom_element_bindings_.push_back(std::move(binding)); | |
| 192 } | |
| 193 | |
| 194 void V8PerContextData::AddData(const char* key, Data* data) { | |
| 195 data_map_.Set(key, data); | |
| 196 } | |
| 197 | |
| 198 void V8PerContextData::ClearData(const char* key) { | |
| 199 data_map_.erase(key); | |
| 200 } | |
| 201 | |
| 202 V8PerContextData::Data* V8PerContextData::GetData(const char* key) { | |
| 203 return data_map_.at(key); | |
| 204 } | |
| 205 | |
| 206 } // namespace blink | |
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Chromium Code Reviews
Issue 2843603002:
Move ScriptWrappable and dependencies to platform/bindings (Closed)
