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/*
* Copyright (C) 2010 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:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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 "IDBBindingUtilities.h"
#if ENABLE(INDEXED_DATABASE)
#include "IDBDatabaseException.h"
#include "IDBKey.h"
#include "IDBKeyPath.h"
#include "SerializedScriptValue.h"
#include "V8Binding.h"
#include "V8IDBKey.h"
#include <wtf/Vector.h>
namespace WebCore {
PassRefPtr<IDBKey> createIDBKeyFromValue(v8::Handle<v8::Value> value)
{
if (value->IsNull())
return IDBKey::createNull();
if (value->IsNumber())
return IDBKey::createNumber(value->NumberValue());
if (value->IsString())
return IDBKey::createString(v8ValueToWebCoreString(value));
if (value->IsDate())
return IDBKey::createDate(value->NumberValue());
return 0; // Signals type error.
}
namespace {
template<typename T>
bool getValueFrom(T indexOrName, v8::Handle<v8::Value>& v8Value)
{
v8::Local<v8::Object> object = v8Value->ToObject();
if (!object->Has(indexOrName))
return false;
v8Value = object->Get(indexOrName);
return true;
}
template<typename T>
bool setValue(v8::Handle<v8::Value>& v8Object, T indexOrName, const v8::Handle<v8::Value>& v8Value)
{
v8::Local<v8::Object> object = v8Object->ToObject();
ASSERT(!object->Has(indexOrName));
return object->Set(indexOrName, v8Value);
}
bool get(v8::Handle<v8::Value>& object, const IDBKeyPathElement& keyPathElement)
{
switch (keyPathElement.type) {
case IDBKeyPathElement::IsIndexed:
return object->IsArray() && getValueFrom(keyPathElement.index, object);
case IDBKeyPathElement::IsNamed:
return object->IsObject() && getValueFrom(v8String(keyPathElement.identifier), object);
default:
ASSERT_NOT_REACHED();
}
return false;
}
bool set(v8::Handle<v8::Value>& object, const IDBKeyPathElement& keyPathElement, const v8::Handle<v8::Value>& v8Value)
{
switch (keyPathElement.type) {
case IDBKeyPathElement::IsIndexed:
return object->IsArray() && setValue(object, keyPathElement.index, v8Value);
case IDBKeyPathElement::IsNamed:
return object->IsObject() && setValue(object, v8String(keyPathElement.identifier), v8Value);
default:
ASSERT_NOT_REACHED();
}
return false;
}
class LocalContext {
public:
LocalContext()
: m_context(v8::Context::New())
{
m_context->Enter();
}
~LocalContext()
{
m_context->Exit();
m_context.Dispose();
}
private:
v8::HandleScope m_scope;
v8::Persistent<v8::Context> m_context;
};
v8::Handle<v8::Value> getNthValueOnKeyPath(v8::Handle<v8::Value>& rootValue, const Vector<IDBKeyPathElement>& keyPathElements, size_t index)
{
v8::Handle<v8::Value> currentValue(rootValue);
ASSERT(index <= keyPathElements.size());
for (size_t i = 0; i < index; ++i) {
if (!get(currentValue, keyPathElements[i]))
return v8::Handle<v8::Value>();
}
return currentValue;
}
} // anonymous namespace
PassRefPtr<IDBKey> createIDBKeyFromSerializedValueAndKeyPath(PassRefPtr<SerializedScriptValue> value, const Vector<IDBKeyPathElement>& keyPath)
{
LocalContext localContext;
v8::Handle<v8::Value> v8Value(value->deserialize());
v8::Handle<v8::Value> v8Key(getNthValueOnKeyPath(v8Value, keyPath, keyPath.size()));
if (v8Key.IsEmpty())
return 0;
return createIDBKeyFromValue(v8Key);
}
PassRefPtr<SerializedScriptValue> injectIDBKeyIntoSerializedValue(PassRefPtr<IDBKey> key, PassRefPtr<SerializedScriptValue> value, const Vector<IDBKeyPathElement>& keyPath)
{
LocalContext localContext;
if (!keyPath.size())
return 0;
v8::Handle<v8::Value> v8Value(value->deserialize());
v8::Handle<v8::Value> parent(getNthValueOnKeyPath(v8Value, keyPath, keyPath.size() - 1));
if (parent.IsEmpty())
return 0;
if (!set(parent, keyPath.last(), toV8(key.get())))
return 0;
return SerializedScriptValue::create(v8Value);
}
} // namespace WebCore
#endif
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