root/Source/bindings/v8/ScriptDebugServer.h

INCLUDED FROM

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#ifndef ScriptDebugServer_h
#define ScriptDebugServer_h

#include "InspectorBackendDispatcher.h"
#include "bindings/v8/ScopedPersistent.h"
#include "core/inspector/ScriptBreakpoint.h"
#include "core/inspector/ScriptDebugListener.h"
#include <v8-debug.h>
#include "wtf/HashMap.h"
#include "wtf/Noncopyable.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/Vector.h"
#include "wtf/text/StringHash.h"
#include "wtf/text/WTFString.h"

namespace WebCore {

class ScriptController;
class ScriptDebugListener;
class ScriptObject;
class ScriptSourceCode;
class ScriptState;
class ScriptValue;
class JavaScriptCallFrame;

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

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

    void setPauseOnNextStatement(bool pause);
    bool canBreakProgram();
    void breakProgram();
    void continueProgram();
    void stepIntoStatement();
    void stepOverStatement(const ScriptValue& frame);
    void stepOutOfFunction(const ScriptValue& frame);

    bool setScriptSource(const String& sourceID, const String& newContent, bool preview, String* error, RefPtr<TypeBuilder::Debugger::SetScriptSourceError>&, ScriptValue* newCallFrames, ScriptObject* result);
    ScriptValue currentCallFrames();
    ScriptValue currentCallFramesForAsyncStack();

    class Task {
    public:
        virtual ~Task() { }
        virtual void run() = 0;
    };
    static void interruptAndRun(PassOwnPtr<Task>, v8::Isolate*);
    void runPendingTasks();

    bool isPaused();
    bool runningNestedMessageLoop() { return m_runningNestedMessageLoop; }

    v8::Local<v8::Value> functionScopes(v8::Handle<v8::Function>);
    v8::Local<v8::Value> getInternalProperties(v8::Handle<v8::Object>&);
    v8::Handle<v8::Value> setFunctionVariableValue(v8::Handle<v8::Value> functionValue, int scopeNumber, const String& variableName, v8::Handle<v8::Value> newValue);
    v8::Local<v8::Value> callDebuggerMethod(const char* functionName, int argc, v8::Handle<v8::Value> argv[]);

    virtual void compileScript(ScriptState*, const String& expression, const String& sourceURL, String* scriptId, String* exceptionMessage);
    virtual void clearCompiledScripts();
    virtual void runScript(ScriptState*, const String& scriptId, ScriptValue* result, bool* wasThrown, String* exceptionMessage);
    virtual void setPreprocessorSource(const String&) { }
    virtual void preprocessBeforeCompile(const v8::Debug::EventDetails&) { }
    virtual PassOwnPtr<ScriptSourceCode> preprocess(LocalFrame*, const ScriptSourceCode&);
    virtual String preprocessEventListener(LocalFrame*, const String& source, const String& url, const String& functionName);

    virtual void muteWarningsAndDeprecations() { }
    virtual void unmuteWarningsAndDeprecations() { }

protected:
    explicit ScriptDebugServer(v8::Isolate*);
    virtual ~ScriptDebugServer();

    virtual ScriptDebugListener* getDebugListenerForContext(v8::Handle<v8::Context>) = 0;
    virtual void runMessageLoopOnPause(v8::Handle<v8::Context>) = 0;
    virtual void quitMessageLoopOnPause() = 0;

    static void breakProgramCallback(const v8::FunctionCallbackInfo<v8::Value>&);
    void handleProgramBreak(v8::Handle<v8::Object> executionState, v8::Handle<v8::Value> exception, v8::Handle<v8::Array> hitBreakpoints);
    void handleProgramBreak(const v8::Debug::EventDetails&, v8::Handle<v8::Value> exception, v8::Handle<v8::Array> hitBreakpointNumbers);

    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();

    PauseOnExceptionsState m_pauseOnExceptionsState;
    ScopedPersistent<v8::Object> m_debuggerScript;
    ScopedPersistent<v8::Object> m_executionState;
    v8::Handle<v8::Context> m_pausedContext;
    bool m_breakpointsActivated;
    ScopedPersistent<v8::FunctionTemplate> m_breakProgramCallbackTemplate;
    HashMap<String, OwnPtr<ScopedPersistent<v8::Script> > > m_compiledScripts;
    v8::Isolate* m_isolate;

private:
    enum ScopeInfoDetails {
        AllScopes,
        FastAsyncScopes,
        NoScopes // Should be the last option.
    };

    ScriptValue currentCallFramesInner(ScopeInfoDetails);

    void stepCommandWithFrame(const char* functionName, const ScriptValue& frame);
    PassRefPtr<JavaScriptCallFrame> wrapCallFrames(v8::Handle<v8::Object> executionState, int maximumLimit, ScopeInfoDetails);
    bool executeSkipPauseRequest(ScriptDebugListener::SkipPauseRequest, v8::Handle<v8::Object> executionState);

    bool m_runningNestedMessageLoop;
};

} // namespace WebCore


#endif // ScriptDebugServer_h