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      1 /*
      2  * Copyright (c) 2008, 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 ScriptCallStack_h
     32 #define ScriptCallStack_h
     33 
     34 #include "ScriptCallFrame.h"
     35 #include "ScriptState.h"
     36 #include "ScriptString.h"
     37 #include <wtf/Noncopyable.h>
     38 
     39 namespace JSC {
     40     class ExecState;
     41     class JSValue;
     42 }
     43 
     44 namespace WebCore {
     45 
     46     class ScriptCallStack : public Noncopyable {
     47     public:
     48         ScriptCallStack(JSC::ExecState*, const JSC::ArgList&, unsigned skipArgumentCount = 0);
     49         ~ScriptCallStack();
     50 
     51         ScriptState* state() const { return m_exec; }
     52         ScriptState* globalState() const { return m_exec->lexicalGlobalObject()->globalExec(); }
     53         // frame retrieval methods
     54         const ScriptCallFrame &at(unsigned);
     55         unsigned size();
     56 
     57     private:
     58         void initialize();
     59         bool m_initialized;
     60 
     61         JSC::ExecState* m_exec;
     62         Vector<ScriptCallFrame> m_frames;
     63         JSC::InternalFunction* m_caller;
     64     };
     65 
     66 } // namespace WebCore
     67 
     68 #endif // ScriptCallStack_h
     69