root/Source/core/inspector/JavaScriptCallFrame.cpp

DEFINITIONS

1. m_callFrame
2. caller
3. callV8FunctionReturnInt
4. callV8FunctionReturnString
5. sourceID
6. line
7. column
8. functionName
9. scopeChain
10. scopeType
11. thisObject
12. stepInPositions
13. isAtReturn
14. returnValue
15. evaluate
16. restart
17. innerCallFrame
18. setVariableValue

/*
 * 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,
 * 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 "core/inspector/JavaScriptCallFrame.h"

#include "bindings/v8/ScriptValue.h"
#include "bindings/v8/V8Binding.h"

namespace WebCore {

JavaScriptCallFrame::JavaScriptCallFrame(v8::Handle<v8::Context> debuggerContext, v8::Handle<v8::Object> callFrame)
    : m_isolate(v8::Isolate::GetCurrent())
    , m_debuggerContext(m_isolate, debuggerContext)
    , m_callFrame(m_isolate, callFrame)
{
    ScriptWrappable::init(this);
}

JavaScriptCallFrame::~JavaScriptCallFrame()
{
}

JavaScriptCallFrame* JavaScriptCallFrame::caller()
{
    if (!m_caller) {
        v8::HandleScope handleScope(m_isolate);
        v8::Handle<v8::Context> debuggerContext = m_debuggerContext.newLocal(m_isolate);
        v8::Context::Scope contextScope(debuggerContext);
        v8::Handle<v8::Value> callerFrame = m_callFrame.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "caller"));
        if (!callerFrame->IsObject())
            return 0;
        m_caller = JavaScriptCallFrame::create(debuggerContext, v8::Handle<v8::Object>::Cast(callerFrame));
    }
    return m_caller.get();
}

int JavaScriptCallFrame::callV8FunctionReturnInt(const char* name) const
{
    v8::HandleScope handleScope(m_isolate);
    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
    v8::Handle<v8::Function> func = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, name)));
    v8::Handle<v8::Value> result = func->Call(callFrame, 0, 0);
    if (result->IsInt32())
        return result->Int32Value();
    return 0;
}

String JavaScriptCallFrame::callV8FunctionReturnString(const char* name) const
{
    v8::HandleScope handleScope(m_isolate);
    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
    v8::Handle<v8::Function> func = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, name)));
    v8::Handle<v8::Value> result = func->Call(callFrame, 0, 0);
    return toCoreStringWithUndefinedOrNullCheck(result);
}

int JavaScriptCallFrame::sourceID() const
{
    return callV8FunctionReturnInt("sourceID");
}

int JavaScriptCallFrame::line() const
{
    return callV8FunctionReturnInt("line");
}

int JavaScriptCallFrame::column() const
{
    return callV8FunctionReturnInt("column");
}

String JavaScriptCallFrame::functionName() const
{
    return callV8FunctionReturnString("functionName");
}

v8::Handle<v8::Value> JavaScriptCallFrame::scopeChain() const
{
    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
    v8::Handle<v8::Function> func = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "scopeChain")));
    v8::Handle<v8::Array> scopeChain = v8::Handle<v8::Array>::Cast(func->Call(callFrame, 0, 0));
    v8::Handle<v8::Array> result = v8::Array::New(m_isolate, 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.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "scopeType")));
    return scopeType->Get(scopeIndex)->Int32Value();
}

v8::Handle<v8::Value> JavaScriptCallFrame::thisObject() const
{
    return m_callFrame.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "thisObject"));
}

String JavaScriptCallFrame::stepInPositions() const
{
    return callV8FunctionReturnString("stepInPositions");
}

bool JavaScriptCallFrame::isAtReturn() const
{
    v8::HandleScope handleScope(m_isolate);
    v8::Context::Scope contextScope(m_debuggerContext.newLocal(m_isolate));
    v8::Handle<v8::Value> result = m_callFrame.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "isAtReturn"));
    if (result->IsBoolean())
        return result->BooleanValue();
    return false;
}

v8::Handle<v8::Value> JavaScriptCallFrame::returnValue() const
{
    return m_callFrame.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "returnValue"));
}

v8::Handle<v8::Value> JavaScriptCallFrame::evaluate(const String& expression)
{
    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
    v8::Handle<v8::Function> evalFunction = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "evaluate")));
    v8::Handle<v8::Value> argv[] = { v8String(m_debuggerContext.newLocal(m_isolate)->GetIsolate(), expression) };
    return evalFunction->Call(callFrame, WTF_ARRAY_LENGTH(argv), argv);
}

v8::Handle<v8::Value> JavaScriptCallFrame::restart()
{
    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
    v8::Handle<v8::Function> restartFunction = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "restart")));
    v8::Debug::SetLiveEditEnabled(true);
    v8::Handle<v8::Value> result = restartFunction->Call(callFrame, 0, 0);
    v8::Debug::SetLiveEditEnabled(false);
    return result;
}

v8::Handle<v8::Object> JavaScriptCallFrame::innerCallFrame()
{
    return m_callFrame.newLocal(m_isolate);
}

ScriptValue JavaScriptCallFrame::setVariableValue(int scopeNumber, const String& variableName, const ScriptValue& newValue)
{
    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
    v8::Handle<v8::Function> setVariableValueFunction = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "setVariableValue")));
    v8::Handle<v8::Value> argv[] = {
        v8::Handle<v8::Value>(v8::Integer::New(m_isolate, scopeNumber)),
        v8String(m_isolate, variableName),
        newValue.v8Value()
    };
    return ScriptValue(setVariableValueFunction->Call(callFrame, WTF_ARRAY_LENGTH(argv), argv), m_isolate);
}

} // namespace WebCore