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/*
* Copyright (C) 2011 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 INC. 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 INC. 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 "V8ArrayBufferViewCustom.h"
#include "V8ArrayBufferViewCustomScript.h"
#include <v8.h>
namespace WebCore {
// The random suffix helps to avoid name collision.
const char hiddenCopyMethodName[] = "TypedArray::HiddenCopy::8NkZVq";
v8::Handle<v8::Value> getHiddenCopyMethod(v8::Handle<v8::Object> prototype)
{
v8::Handle<v8::String> key = v8::String::New(hiddenCopyMethodName);
return prototype->GetHiddenValue(key);
}
v8::Handle<v8::Value> installHiddenCopyMethod(v8::Handle<v8::Object> prototype) {
v8::TryCatch tryCatch;
tryCatch.SetVerbose(true);
String source(reinterpret_cast<const char*>(V8ArrayBufferViewCustomScript_js),
sizeof(V8ArrayBufferViewCustomScript_js));
v8::Handle<v8::Script> script = v8::Script::Compile(v8String(source));
v8::Handle<v8::Value> value = script->Run();
v8::Handle<v8::String> key = v8::String::New(hiddenCopyMethodName);
prototype->SetHiddenValue(key, value);
return value;
}
bool copyElements(v8::Handle<v8::Object> destArray, v8::Handle<v8::Object> srcArray, uint32_t length, uint32_t offset, v8::Isolate* isolate)
{
v8::Handle<v8::Value> prototype_value = destArray->GetPrototype();
if (prototype_value.IsEmpty() || !prototype_value->IsObject())
return false;
v8::Handle<v8::Object> prototype = prototype_value.As<v8::Object>();
v8::Handle<v8::Value> value = getHiddenCopyMethod(prototype);
if (value.IsEmpty())
value = installHiddenCopyMethod(prototype);
if (value.IsEmpty() || !value->IsFunction())
return false;
v8::Handle<v8::Function> copy_method = value.As<v8::Function>();
v8::Handle<v8::Value> arguments[3];
arguments[0] = srcArray;
arguments[1] = v8::Uint32::New(length);
arguments[2] = v8::Uint32::New(offset);
copy_method->Call(destArray, 3, arguments);
return true;
}
}
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