/*

 * 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:

 *

 *     * 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,

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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "JavaScriptCallFrame.h"

#if ENABLE(JAVASCRIPT_DEBUGGER)

#include "V8Binding.h"

namespace WebCore {

JavaScriptCallFrame::JavaScriptCallFrame(v8::Handle<v8::Context> debuggerContext, v8::Handle<v8::Object> callFrame)

    : m_debuggerContext(debuggerContext)

    , m_callFrame(callFrame)

{

}

JavaScriptCallFrame::~JavaScriptCallFrame()

{

}

JavaScriptCallFrame* JavaScriptCallFrame::caller()

{

    if (!m_caller) {

        v8::HandleScope handleScope;

        v8::Context::Scope contextScope(m_debuggerContext.get());

        v8::Handle<v8::Value> callerFrame = m_callFrame.get()->Get(v8String("caller"));

        if (!callerFrame->IsObject())

            return 0;

        m_caller = JavaScriptCallFrame::create(m_debuggerContext.get(), v8::Handle<v8::Object>::Cast(callerFrame));

    }

    return m_caller.get();

}

int JavaScriptCallFrame::sourceID() const

{

    v8::HandleScope handleScope;

    v8::Context::Scope contextScope(m_debuggerContext.get());

    v8::Handle<v8::Value> result = m_callFrame.get()->Get(v8String("sourceID"));

    if (result->IsInt32())

        return result->Int32Value();

    return 0;

}

int JavaScriptCallFrame::line() const

{

    v8::HandleScope handleScope;

    v8::Context::Scope contextScope(m_debuggerContext.get());

    v8::Handle<v8::Value> result = m_callFrame.get()->Get(v8String("line"));

    if (result->IsInt32())

        return result->Int32Value();

    return 0;

}

String JavaScriptCallFrame::functionName() const

{

    v8::HandleScope handleScope;

    v8::Context::Scope contextScope(m_debuggerContext.get());

    v8::Handle<v8::Value> result = m_callFrame.get()->Get(v8String("functionName"));

    return toWebCoreStringWithNullOrUndefinedCheck(result);

}

v8::Handle<v8::Value> JavaScriptCallFrame::scopeChain() const

{

    v8::Handle<v8::Array> scopeChain = v8::Handle<v8::Array>::Cast(m_callFrame.get()->Get(v8String("scopeChain")));

    v8::Handle<v8::Array> result = v8::Array::New(scopeChain->Length());

    for (uint32_t i = 0; i < scopeChain->Length(); i++)

        result->Set(i, scopeChain->Get(i));

    return result;

}

int JavaScriptCallFrame::scopeType(int scopeIndex) const

{

    v8::Handle<v8::Array> scopeType = v8::Handle<v8::Array>::Cast(m_callFrame.get()->Get(v8String("scopeType")));

    return scopeType->Get(scopeIndex)->Int32Value();

}

v8::Handle<v8::Value> JavaScriptCallFrame::thisObject() const

{

    return m_callFrame.get()->Get(v8String("thisObject"));

}

v8::Handle<v8::Value> JavaScriptCallFrame::evaluate(const String& expression)

{

    v8::Handle<v8::Function> evalFunction = v8::Handle<v8::Function>::Cast(m_callFrame.get()->Get(v8String("evaluate")));

    v8::Handle<v8::Value> argv[] = { v8String(expression) };

    return evalFunction->Call(m_callFrame.get(), 1, argv);

}

} // namespace WebCore

#endif // ENABLE(JAVASCRIPT_DEBUGGER)