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/*
* Copyright (C) 2013 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/v8/ScriptPreprocessor.h"
#include "bindings/v8/ScriptController.h"
#include "bindings/v8/ScriptSourceCode.h"
#include "bindings/v8/ScriptValue.h"
#include "bindings/v8/V8ScriptRunner.h"
#include "core/page/PageConsole.h"
#include "wtf/TemporaryChange.h"
namespace WebCore {
ScriptPreprocessor::ScriptPreprocessor(const ScriptSourceCode& preprocessorSourceCode, ScriptController& controller, PageConsole& console)
: m_isPreprocessing(false)
{
v8::TryCatch tryCatch;
tryCatch.SetVerbose(true);
Vector<ScriptSourceCode> sources;
sources.append(preprocessorSourceCode);
Vector<ScriptValue> scriptResults;
controller.executeScriptInIsolatedWorld(ScriptPreprocessorIsolatedWorldId, sources, DOMWrapperWorld::mainWorldExtensionGroup, &scriptResults);
if (scriptResults.size() != 1) {
console.addMessage(JSMessageSource, ErrorMessageLevel, "ScriptPreprocessor internal error, one ScriptSourceCode must give exactly one result.");
return;
}
ScriptValue preprocessorFunction = scriptResults[0];
if (!preprocessorFunction.isFunction()) {
console.addMessage(JSMessageSource, ErrorMessageLevel, "The preprocessor must compile to a function.");
return;
}
m_world = DOMWrapperWorld::ensureIsolatedWorld(ScriptPreprocessorIsolatedWorldId, DOMWrapperWorld::mainWorldExtensionGroup);
v8::Local<v8::Context> context = m_world->context(controller);
m_isolate = context->GetIsolate();
m_context.set(m_isolate, context);
m_preprocessorFunction.set(m_isolate, v8::Handle<v8::Function>::Cast(preprocessorFunction.v8Value()));
}
String ScriptPreprocessor::preprocessSourceCode(const String& sourceCode, const String& sourceName)
{
if (!isValid())
return sourceCode;
return preprocessSourceCode(sourceCode, sourceName, v8::Undefined(m_isolate));
}
String ScriptPreprocessor::preprocessSourceCode(const String& sourceCode, const String& sourceName, const String& functionName)
{
if (!isValid())
return sourceCode;
v8::Handle<v8::String> functionNameString = v8String(m_isolate, functionName);
return preprocessSourceCode(sourceCode, sourceName, functionNameString);
}
String ScriptPreprocessor::preprocessSourceCode(const String& sourceCode, const String& sourceName, v8::Handle<v8::Value> functionName)
{
if (!isValid())
return sourceCode;
v8::HandleScope handleScope(m_isolate);
v8::Context::Scope contextScope(m_context.newLocal(m_isolate));
v8::Handle<v8::String> sourceCodeString = v8String(m_isolate, sourceCode);
v8::Handle<v8::String> sourceNameString = v8String(m_isolate, sourceName);
v8::Handle<v8::Value> argv[] = { sourceCodeString, sourceNameString, functionName};
v8::TryCatch tryCatch;
tryCatch.SetVerbose(true);
TemporaryChange<bool> isPreprocessing(m_isPreprocessing, true);
v8::Handle<v8::Value> resultValue = V8ScriptRunner::callAsFunction(m_preprocessorFunction.newLocal(m_isolate), m_context.newLocal(m_isolate)->Global(), WTF_ARRAY_LENGTH(argv), argv);
if (!resultValue.IsEmpty() && resultValue->IsString())
return toCoreStringWithNullCheck(resultValue.As<v8::String>());
return sourceCode;
}
} // namespace WebCore
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