Home | History | Annotate | Download | only in v8 
      1 /*
      2  * Copyright (c) 2010, Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef ScriptDebugServer_h
     32 #define ScriptDebugServer_h
     33 
     34 #if ENABLE(JAVASCRIPT_DEBUGGER)
     35 
     36 #include "JavaScriptCallFrame.h"
     37 #include "PlatformString.h"
     38 #include "ScriptBreakpoint.h"
     39 #include "Timer.h"
     40 #include <v8-debug.h>
     41 #include <wtf/HashMap.h>
     42 #include <wtf/Noncopyable.h>
     43 #include <wtf/PassOwnPtr.h>
     44 #include <wtf/text/StringHash.h>
     45 
     46 namespace WebCore {
     47 
     48 class ScriptDebugListener;
     49 
     50 class ScriptDebugServer {
     51     WTF_MAKE_NONCOPYABLE(ScriptDebugServer);
     52 public:
     53     String setBreakpoint(const String& sourceID, const ScriptBreakpoint&, int* actualLineNumber, int* actualColumnNumber);
     54     void removeBreakpoint(const String& breakpointId);
     55     void clearBreakpoints();
     56     void setBreakpointsActivated(bool activated);
     57     void activateBreakpoints() { setBreakpointsActivated(true); }
     58     void deactivateBreakpoints() { setBreakpointsActivated(false); }
     59 
     60     enum PauseOnExceptionsState {
     61         DontPauseOnExceptions,
     62         PauseOnAllExceptions,
     63         PauseOnUncaughtExceptions
     64     };
     65     PauseOnExceptionsState pauseOnExceptionsState();
     66     void setPauseOnExceptionsState(PauseOnExceptionsState pauseOnExceptionsState);
     67 
     68     void setPauseOnNextStatement(bool pause);
     69     void breakProgram();
     70     void continueProgram();
     71     void stepIntoStatement();
     72     void stepOverStatement();
     73     void stepOutOfFunction();
     74 
     75     bool editScriptSource(const String& sourceID, const String& newContent, String* error);
     76 
     77     void recompileAllJSFunctionsSoon() { }
     78     void recompileAllJSFunctions(Timer<ScriptDebugServer>* = 0) { }
     79 
     80     PassRefPtr<JavaScriptCallFrame> currentCallFrame();
     81 
     82     class Task {
     83     public:
     84         virtual ~Task() { }
     85         virtual void run() = 0;
     86     };
     87     static void interruptAndRun(PassOwnPtr<Task>);
     88     void runPendingTasks();
     89 
     90 protected:
     91     ScriptDebugServer();
     92     ~ScriptDebugServer() { }
     93 
     94     virtual ScriptDebugListener* getDebugListenerForContext(v8::Handle<v8::Context>) = 0;
     95     virtual void runMessageLoopOnPause(v8::Handle<v8::Context>) = 0;
     96     virtual void quitMessageLoopOnPause() = 0;
     97 
     98     static v8::Handle<v8::Value> breakProgramCallback(const v8::Arguments& args);
     99     void breakProgram(v8::Handle<v8::Object> executionState);
    100 
    101     static void v8DebugEventCallback(const v8::Debug::EventDetails& eventDetails);
    102     void handleV8DebugEvent(const v8::Debug::EventDetails& eventDetails);
    103 
    104     void dispatchDidParseSource(ScriptDebugListener* listener, v8::Handle<v8::Object> sourceObject);
    105 
    106     void ensureDebuggerScriptCompiled();
    107 
    108     bool isPaused();
    109 
    110     PauseOnExceptionsState m_pauseOnExceptionsState;
    111     OwnHandle<v8::Object> m_debuggerScript;
    112     RefPtr<JavaScriptCallFrame> m_currentCallFrame;
    113     OwnHandle<v8::Object> m_executionState;
    114     v8::Local<v8::Context> m_pausedPageContext;
    115 
    116     bool m_breakpointsActivated;
    117     OwnHandle<v8::FunctionTemplate> m_breakProgramCallbackTemplate;
    118 };
    119 
    120 } // namespace WebCore
    121 
    122 #endif // ENABLE(JAVASCRIPT_DEBUGGER)
    123 
    124 #endif // ScriptDebugServer_h
    125