| /* |
| * 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 "config.h" |
| #include "bindings/core/v8/V8PerContextData.h" |
| |
| #include "bindings/core/v8/ScriptState.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/V8ObjectConstructor.h" |
| #include "wtf/StringExtras.h" |
| |
| #include <stdlib.h> |
| |
| namespace blink { |
| |
| V8PerContextData::V8PerContextData(v8::Handle<v8::Context> context) |
| : m_isolate(context->GetIsolate()) |
| , m_wrapperBoilerplates(m_isolate) |
| , m_constructorMap(m_isolate) |
| , m_contextHolder(adoptPtr(new gin::ContextHolder(m_isolate))) |
| , m_context(m_isolate, context) |
| , m_customElementBindings(adoptPtr(new CustomElementBindingMap())) |
| , m_activityLogger(0) |
| , m_compiledPrivateScript(m_isolate) |
| { |
| m_contextHolder->SetContext(context); |
| |
| v8::Context::Scope contextScope(context); |
| ASSERT(m_errorPrototype.isEmpty()); |
| v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(context->Global()->Get(v8AtomicString(m_isolate, "Error"))); |
| ASSERT(!object.IsEmpty()); |
| v8::Handle<v8::Value> prototypeValue = object->Get(v8AtomicString(m_isolate, "prototype")); |
| ASSERT(!prototypeValue.IsEmpty()); |
| m_errorPrototype.set(m_isolate, prototypeValue); |
| } |
| |
| V8PerContextData::~V8PerContextData() |
| { |
| } |
| |
| PassOwnPtr<V8PerContextData> V8PerContextData::create(v8::Handle<v8::Context> context) |
| { |
| return adoptPtr(new V8PerContextData(context)); |
| } |
| |
| V8PerContextData* V8PerContextData::from(v8::Handle<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> function = constructorForType(type); |
| v8::Local<v8::Object> instanceTemplate = V8ObjectConstructor::newInstance(m_isolate, function); |
| if (!instanceTemplate.IsEmpty()) { |
| m_wrapperBoilerplates.Set(type, instanceTemplate); |
| return instanceTemplate->Clone(); |
| } |
| return v8::Local<v8::Object>(); |
| } |
| |
| v8::Local<v8::Function> V8PerContextData::constructorForTypeSlowCase(const WrapperTypeInfo* type) |
| { |
| ASSERT(!m_errorPrototype.isEmpty()); |
| |
| v8::Context::Scope scope(context()); |
| v8::Handle<v8::FunctionTemplate> functionTemplate = type->domTemplate(m_isolate); |
| // Getting the function might fail if we're running out of stack or memory. |
| v8::TryCatch tryCatch; |
| v8::Local<v8::Function> function = functionTemplate->GetFunction(); |
| if (function.IsEmpty()) |
| return v8::Local<v8::Function>(); |
| |
| if (type->parentClass) { |
| v8::Local<v8::Object> prototypeTemplate = constructorForType(type->parentClass); |
| if (prototypeTemplate.IsEmpty()) |
| return v8::Local<v8::Function>(); |
| function->SetPrototype(prototypeTemplate); |
| } |
| |
| v8::Local<v8::Value> prototypeValue = function->Get(v8AtomicString(m_isolate, "prototype")); |
| if (!prototypeValue.IsEmpty() && prototypeValue->IsObject()) { |
| v8::Local<v8::Object> prototypeObject = v8::Local<v8::Object>::Cast(prototypeValue); |
| if (prototypeObject->InternalFieldCount() == v8PrototypeInternalFieldcount |
| && type->wrapperTypePrototype == WrapperTypeInfo::WrapperTypeObjectPrototype) |
| prototypeObject->SetAlignedPointerInInternalField(v8PrototypeTypeIndex, const_cast<WrapperTypeInfo*>(type)); |
| type->installConditionallyEnabledMethods(prototypeObject, m_isolate); |
| if (type->wrapperTypePrototype == WrapperTypeInfo::WrapperTypeExceptionPrototype) |
| prototypeObject->SetPrototype(m_errorPrototype.newLocal(m_isolate)); |
| } |
| |
| m_constructorMap.Set(type, function); |
| |
| return function; |
| } |
| |
| v8::Local<v8::Object> V8PerContextData::prototypeForType(const WrapperTypeInfo* type) |
| { |
| v8::Local<v8::Object> constructor = constructorForType(type); |
| if (constructor.IsEmpty()) |
| return v8::Local<v8::Object>(); |
| return constructor->Get(v8String(m_isolate, "prototype")).As<v8::Object>(); |
| } |
| |
| void V8PerContextData::addCustomElementBinding(CustomElementDefinition* definition, PassOwnPtr<CustomElementBinding> binding) |
| { |
| ASSERT(!m_customElementBindings->contains(definition)); |
| m_customElementBindings->add(definition, binding); |
| } |
| |
| void V8PerContextData::clearCustomElementBinding(CustomElementDefinition* definition) |
| { |
| CustomElementBindingMap::iterator it = m_customElementBindings->find(definition); |
| ASSERT_WITH_SECURITY_IMPLICATION(it != m_customElementBindings->end()); |
| m_customElementBindings->remove(it); |
| } |
| |
| CustomElementBinding* V8PerContextData::customElementBinding(CustomElementDefinition* definition) |
| { |
| CustomElementBindingMap::const_iterator it = m_customElementBindings->find(definition); |
| ASSERT_WITH_SECURITY_IMPLICATION(it != m_customElementBindings->end()); |
| return it->value.get(); |
| } |
| |
| |
| static v8::Handle<v8::Value> createDebugData(const char* worldName, int debugId, v8::Isolate* isolate) |
| { |
| char buffer[32]; |
| unsigned wanted; |
| if (debugId == -1) |
| wanted = snprintf(buffer, sizeof(buffer), "%s", worldName); |
| else |
| wanted = snprintf(buffer, sizeof(buffer), "%s,%d", worldName, debugId); |
| |
| if (wanted < sizeof(buffer)) |
| return v8AtomicString(isolate, buffer); |
| |
| return v8::Undefined(isolate); |
| } |
| |
| static v8::Handle<v8::Value> debugData(v8::Handle<v8::Context> context) |
| { |
| v8::Context::Scope contextScope(context); |
| return context->GetEmbedderData(v8ContextDebugIdIndex); |
| } |
| |
| static void setDebugData(v8::Handle<v8::Context> context, v8::Handle<v8::Value> value) |
| { |
| v8::Context::Scope contextScope(context); |
| context->SetEmbedderData(v8ContextDebugIdIndex, value); |
| } |
| |
| bool V8PerContextDebugData::setContextDebugData(v8::Handle<v8::Context> context, const char* worldName, int debugId) |
| { |
| if (!debugData(context)->IsUndefined()) |
| return false; |
| v8::HandleScope scope(context->GetIsolate()); |
| v8::Handle<v8::Value> debugData = createDebugData(worldName, debugId, context->GetIsolate()); |
| setDebugData(context, debugData); |
| return true; |
| } |
| |
| int V8PerContextDebugData::contextDebugId(v8::Handle<v8::Context> context) |
| { |
| v8::HandleScope scope(context->GetIsolate()); |
| v8::Handle<v8::Value> data = debugData(context); |
| |
| if (!data->IsString()) |
| return -1; |
| v8::String::Utf8Value utf8(data); |
| char* comma = strnstr(*utf8, ",", utf8.length()); |
| if (!comma) |
| return -1; |
| return atoi(comma + 1); |
| } |
| |
| v8::Handle<v8::Value> V8PerContextData::compiledPrivateScript(String className) |
| { |
| return m_compiledPrivateScript.Get(className); |
| } |
| |
| void V8PerContextData::setCompiledPrivateScript(String className, v8::Handle<v8::Value> compiledObject) |
| { |
| m_compiledPrivateScript.Set(className, compiledObject); |
| } |
| |
| } // namespace blink |