Source/WebCore/bindings/v8/ScriptDebugServer.h

/*
 * Copyright (c) 2010, Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 */

#ifndef ScriptDebugServer_h
#define ScriptDebugServer_h

#if ENABLE(JAVASCRIPT_DEBUGGER)

#include "JavaScriptCallFrame.h"
#include "PlatformString.h"
#include "ScriptBreakpoint.h"
#include "Timer.h"
#include <v8-debug.h>
#include <wtf/HashMap.h>
#include <wtf/Noncopyable.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/text/StringHash.h>

namespace WebCore {

class ScriptDebugListener;

class ScriptDebugServer {
    WTF_MAKE_NONCOPYABLE(ScriptDebugServer);
public:
    String setBreakpoint(const String& sourceID, const ScriptBreakpoint&, int* actualLineNumber, int* actualColumnNumber);
    void removeBreakpoint(const String& breakpointId);
    void clearBreakpoints();
    void setBreakpointsActivated(bool activated);
    void activateBreakpoints() { setBreakpointsActivated(true); }
    void deactivateBreakpoints() { setBreakpointsActivated(false); }

    enum PauseOnExceptionsState {
        DontPauseOnExceptions,
        PauseOnAllExceptions,
        PauseOnUncaughtExceptions
    };
    PauseOnExceptionsState pauseOnExceptionsState();
    void setPauseOnExceptionsState(PauseOnExceptionsState pauseOnExceptionsState);

    void setPauseOnNextStatement(bool pause);
    void breakProgram();
    void continueProgram();
    void stepIntoStatement();
    void stepOverStatement();
    void stepOutOfFunction();

    bool editScriptSource(const String& sourceID, const String& newContent, String* error);

    void recompileAllJSFunctionsSoon() { }
    void recompileAllJSFunctions(Timer<ScriptDebugServer>* = 0) { }

    PassRefPtr<JavaScriptCallFrame> currentCallFrame();

    class Task {
    public:
        virtual ~Task() { }
        virtual void run() = 0;
    };
    static void interruptAndRun(PassOwnPtr<Task>);
    void runPendingTasks();

protected:
    ScriptDebugServer();
    ~ScriptDebugServer() { }
    
    virtual ScriptDebugListener* getDebugListenerForContext(v8::Handle<v8::Context>) = 0;
    virtual void runMessageLoopOnPause(v8::Handle<v8::Context>) = 0;
    virtual void quitMessageLoopOnPause() = 0;

    static v8::Handle<v8::Value> breakProgramCallback(const v8::Arguments& args);
    void breakProgram(v8::Handle<v8::Object> executionState);

    static void v8DebugEventCallback(const v8::Debug::EventDetails& eventDetails);
    void handleV8DebugEvent(const v8::Debug::EventDetails& eventDetails);

    void dispatchDidParseSource(ScriptDebugListener* listener, v8::Handle<v8::Object> sourceObject);

    void ensureDebuggerScriptCompiled();
    
    bool isPaused();

    PauseOnExceptionsState m_pauseOnExceptionsState;
    OwnHandle<v8::Object> m_debuggerScript;
    RefPtr<JavaScriptCallFrame> m_currentCallFrame;
    OwnHandle<v8::Object> m_executionState;
    v8::Local<v8::Context> m_pausedPageContext;

    bool m_breakpointsActivated;
    OwnHandle<v8::FunctionTemplate> m_breakProgramCallbackTemplate;
};

} // namespace WebCore

#endif // ENABLE(JAVASCRIPT_DEBUGGER)

#endif // ScriptDebugServer_h