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/*
* 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_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)
{
m_customElementBindings.append(binding);
}
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
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