| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "bindings/core/v8/V8PerContextData.h" |
| |
| #include "bindings/core/v8/ConditionalFeatures.h" |
| #include "bindings/core/v8/ScriptState.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/V8ObjectConstructor.h" |
| #include "core/inspector/InstanceCounters.h" |
| #include "wtf/PtrUtil.h" |
| #include "wtf/StringExtras.h" |
| #include <memory> |
| #include <stdlib.h> |
| |
| namespace blink { |
| |
| V8PerContextData::V8PerContextData(v8::Local<v8::Context> context) |
| : m_isolate(context->GetIsolate()), |
| m_wrapperBoilerplates(m_isolate), |
| m_constructorMap(m_isolate), |
| m_contextHolder(wrapUnique(new gin::ContextHolder(m_isolate))), |
| m_context(m_isolate, context), |
| m_activityLogger(0), |
| m_compiledPrivateScript(m_isolate) { |
| m_contextHolder->SetContext(context); |
| |
| v8::Context::Scope contextScope(context); |
| ASSERT(m_errorPrototype.isEmpty()); |
| v8::Local<v8::Value> objectValue = |
| context->Global() |
| ->Get(context, v8AtomicString(m_isolate, "Error")) |
| .ToLocalChecked(); |
| v8::Local<v8::Value> prototypeValue = |
| objectValue.As<v8::Object>() |
| ->Get(context, v8AtomicString(m_isolate, "prototype")) |
| .ToLocalChecked(); |
| m_errorPrototype.set(m_isolate, prototypeValue); |
| |
| if (isMainThread()) |
| InstanceCounters::incrementCounter( |
| InstanceCounters::V8PerContextDataCounter); |
| } |
| |
| V8PerContextData::~V8PerContextData() { |
| if (isMainThread()) |
| InstanceCounters::decrementCounter( |
| InstanceCounters::V8PerContextDataCounter); |
| } |
| |
| std::unique_ptr<V8PerContextData> V8PerContextData::create( |
| v8::Local<v8::Context> context) { |
| return wrapUnique(new V8PerContextData(context)); |
| } |
| |
| V8PerContextData* V8PerContextData::from(v8::Local<v8::Context> context) { |
| return ScriptState::from(context)->perContextData(); |
| } |
| |
| v8::Local<v8::Object> V8PerContextData::createWrapperFromCacheSlowCase( |
| const WrapperTypeInfo* type) { |
| ASSERT(!m_errorPrototype.isEmpty()); |
| |
| v8::Context::Scope scope(context()); |
| v8::Local<v8::Function> interfaceObject = constructorForType(type); |
| if (interfaceObject.IsEmpty()) |
| return v8::Local<v8::Object>(); |
| v8::Local<v8::Object> instanceTemplate; |
| if (!V8ObjectConstructor::newInstance(m_isolate, interfaceObject) |
| .ToLocal(&instanceTemplate)) |
| return v8::Local<v8::Object>(); |
| m_wrapperBoilerplates.Set(type, instanceTemplate); |
| return instanceTemplate->Clone(); |
| } |
| |
| v8::Local<v8::Function> V8PerContextData::constructorForTypeSlowCase( |
| const WrapperTypeInfo* type) { |
| ASSERT(!m_errorPrototype.isEmpty()); |
| |
| v8::Local<v8::Context> currentContext = context(); |
| v8::Context::Scope scope(currentContext); |
| const DOMWrapperWorld& world = DOMWrapperWorld::world(currentContext); |
| // We shouldn't reach this point for the types that are implemented in v8 such as typed arrays and |
| // hence don't have domTemplateFunction. |
| ASSERT(type->domTemplateFunction); |
| v8::Local<v8::FunctionTemplate> interfaceTemplate = |
| type->domTemplate(m_isolate, world); |
| // Getting the function might fail if we're running out of stack or memory. |
| v8::Local<v8::Function> interfaceObject; |
| if (!interfaceTemplate->GetFunction(currentContext).ToLocal(&interfaceObject)) |
| return v8::Local<v8::Function>(); |
| |
| if (type->parentClass) { |
| v8::Local<v8::Object> prototypeTemplate = |
| constructorForType(type->parentClass); |
| if (prototypeTemplate.IsEmpty()) |
| return v8::Local<v8::Function>(); |
| if (!v8CallBoolean( |
| interfaceObject->SetPrototype(currentContext, prototypeTemplate))) |
| return v8::Local<v8::Function>(); |
| } |
| |
| v8::Local<v8::Value> prototypeValue; |
| if (!interfaceObject |
| ->Get(currentContext, v8AtomicString(m_isolate, "prototype")) |
| .ToLocal(&prototypeValue) || |
| !prototypeValue->IsObject()) |
| return v8::Local<v8::Function>(); |
| v8::Local<v8::Object> prototypeObject = prototypeValue.As<v8::Object>(); |
| if (prototypeObject->InternalFieldCount() == v8PrototypeInternalFieldcount && |
| type->wrapperTypePrototype == WrapperTypeInfo::WrapperTypeObjectPrototype) |
| prototypeObject->SetAlignedPointerInInternalField( |
| v8PrototypeTypeIndex, const_cast<WrapperTypeInfo*>(type)); |
| type->preparePrototypeAndInterfaceObject(currentContext, world, |
| prototypeObject, interfaceObject, |
| interfaceTemplate); |
| if (type->wrapperTypePrototype == |
| WrapperTypeInfo::WrapperTypeExceptionPrototype) { |
| if (!v8CallBoolean(prototypeObject->SetPrototype( |
| currentContext, m_errorPrototype.newLocal(m_isolate)))) |
| return v8::Local<v8::Function>(); |
| } |
| |
| // Origin Trials |
| installConditionalFeatures(type, ScriptState::from(currentContext), |
| prototypeObject, interfaceObject); |
| |
| m_constructorMap.Set(type, interfaceObject); |
| |
| return interfaceObject; |
| } |
| |
| v8::Local<v8::Object> V8PerContextData::prototypeForType( |
| const WrapperTypeInfo* type) { |
| v8::Local<v8::Object> constructor = constructorForType(type); |
| if (constructor.IsEmpty()) |
| return v8::Local<v8::Object>(); |
| v8::Local<v8::Value> prototypeValue; |
| if (!constructor->Get(context(), v8String(m_isolate, "prototype")) |
| .ToLocal(&prototypeValue) || |
| !prototypeValue->IsObject()) |
| return v8::Local<v8::Object>(); |
| return prototypeValue.As<v8::Object>(); |
| } |
| |
| void V8PerContextData::addCustomElementBinding( |
| std::unique_ptr<V0CustomElementBinding> binding) { |
| m_customElementBindings.append(std::move(binding)); |
| } |
| |
| v8::Local<v8::Value> V8PerContextData::compiledPrivateScript(String className) { |
| return m_compiledPrivateScript.Get(className); |
| } |
| |
| void V8PerContextData::setCompiledPrivateScript( |
| String className, |
| v8::Local<v8::Value> compiledObject) { |
| m_compiledPrivateScript.Set(className, compiledObject); |
| } |
| |
| } // namespace blink |