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/*
* Copyright (C) 2009 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 "ScriptSourceCode.h"
#include "CachedMetadata.h"
#include "CachedScript.h"
#include "V8Binding.h"
namespace WebCore {
PassOwnPtr<v8::ScriptData> ScriptSourceCode::precompileScript(v8::Handle<v8::String> code, CachedScript* cachedScript)
{
// A pseudo-randomly chosen ID used to store and retrieve V8 ScriptData from
// the CachedScript. If the format changes, this ID should be changed too.
static const unsigned dataTypeID = 0xECC13BD7;
// Very small scripts are not worth the effort to preparse.
static const int minPreparseLength = 1024;
if (!cachedScript || code->Length() < minPreparseLength)
return nullptr;
CachedMetadata* cachedMetadata = cachedScript->cachedMetadata(dataTypeID);
if (cachedMetadata)
return adoptPtr(v8::ScriptData::New(cachedMetadata->data(), cachedMetadata->size()));
OwnPtr<v8::ScriptData> scriptData = adoptPtr(v8::ScriptData::PreCompile(code));
if (!scriptData)
return nullptr;
cachedScript->setCachedMetadata(dataTypeID, scriptData->Data(), scriptData->Length());
return scriptData.release();
}
v8::Handle<v8::Script> ScriptSourceCode::compileScript(v8::Handle<v8::String> code, const String& fileName, const TextPosition& scriptStartPosition, v8::ScriptData* scriptData)
{
v8::Handle<v8::String> name = v8String(fileName);
v8::Handle<v8::Integer> line = v8Integer(scriptStartPosition.m_line.zeroBasedInt());
v8::Handle<v8::Integer> column = v8Integer(scriptStartPosition.m_column.zeroBasedInt());
v8::ScriptOrigin origin(name, line, column);
v8::Handle<v8::Script> script = v8::Script::Compile(code, &origin, scriptData);
return script;
}
} // namespace WebCore
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