debugger/DebuggerCallFrame.cpp

   1 /*
   2  * Copyright (C) 2008 Apple 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
   6  * are met:
   7  *
   8  * 1.  Redistributions of source code must retain the above copyright
   9  *     notice, this list of conditions and the following disclaimer.
  10  * 2.  Redistributions in binary form must reproduce the above copyright
  11  *     notice, this list of conditions and the following disclaimer in the
  12  *     documentation and/or other materials provided with the distribution.
  13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
  14  *     its contributors may be used to endorse or promote products derived
  15  *     from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "config.h"
  30 #include "DebuggerCallFrame.h"
  31
  32 #include "JSFunction.h"
  33 #include "CodeBlock.h"
  34 #include "Interpreter.h"
  35 #include "Operations.h"
  36 #include "Parser.h"
  37
  38 namespace JSC {
  39
  40 String DebuggerCallFrame::functionName() const
  41 {
  42     if (!m_callFrame->codeBlock())
  43         return String();
  44
  45     if (!m_callFrame->callee())
  46         return String();
  47
  48     JSObject* function = m_callFrame->callee();
  49     if (!function || !function->inherits(&JSFunction::s_info))
  50         return String();
  51     return jsCast<JSFunction*>(function)->name(m_callFrame);
  52 }
  53
  54 String DebuggerCallFrame::calculatedFunctionName() const
  55 {
  56     if (!m_callFrame->codeBlock())
  57         return String();
  58
  59     JSObject* function = m_callFrame->callee();
  60
  61     if (!function)
  62         return String();
  63
  64     return getCalculatedDisplayName(m_callFrame, function);
  65 }
  66
  67 DebuggerCallFrame::Type DebuggerCallFrame::type() const
  68 {
  69     if (m_callFrame->callee())
  70         return FunctionType;
  71
  72     return ProgramType;
  73 }
  74
  75 JSObject* DebuggerCallFrame::thisObject() const
  76 {
  77     CodeBlock* codeBlock = m_callFrame->codeBlock();
  78     if (!codeBlock)
  79         return 0;
  80
  81     JSValue thisValue = m_callFrame->uncheckedR(codeBlock->thisRegister()).jsValue();
  82     if (!thisValue.isObject())
  83         return 0;
  84
  85     return asObject(thisValue);
  86 }
  87
  88 JSValue DebuggerCallFrame::evaluate(const String& script, JSValue& exception) const
  89 {
  90     if (!m_callFrame->codeBlock())
  91         return JSValue();
  92
  93     VM& vm = m_callFrame->vm();
  94     EvalExecutable* eval = EvalExecutable::create(m_callFrame, m_callFrame->codeBlock()->unlinkedCodeBlock()->codeCacheForEval(), makeSource(script), m_callFrame->codeBlock()->isStrictMode());
  95     if (vm.exception) {
  96         exception = vm.exception;
  97         vm.exception = JSValue();
  98     }
  99
 100     JSValue result = vm.interpreter->execute(eval, m_callFrame, thisObject(), m_callFrame->scope());
 101     if (vm.exception) {
 102         exception = vm.exception;
 103         vm.exception = JSValue();
 104     }
 105     ASSERT(result);
 106     return result;
 107 }
 108
 109 } // namespace JSC