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 "Parser.h"
  36
  37 namespace JSC {
  38
  39 const UString* DebuggerCallFrame::functionName() const
  40 {
  41     if (!m_callFrame->codeBlock())
  42         return 0;
  43
  44     if (!m_callFrame->callee())
  45         return 0;
  46
  47     JSObject* function = m_callFrame->callee();
  48     if (!function || !function->inherits(&JSFunction::s_info))
  49         return 0;
  50     return &jsCast<JSFunction*>(function)->name(m_callFrame);
  51 }
  52
  53 UString DebuggerCallFrame::calculatedFunctionName() const
  54 {
  55     if (!m_callFrame->codeBlock())
  56         return UString();
  57
  58     JSObject* function = m_callFrame->callee();
  59
  60     if (!function)
  61         return UString();
  62
  63     return getCalculatedDisplayName(m_callFrame, function);
  64 }
  65
  66 DebuggerCallFrame::Type DebuggerCallFrame::type() const
  67 {
  68     if (m_callFrame->callee())
  69         return FunctionType;
  70
  71     return ProgramType;
  72 }
  73
  74 JSObject* DebuggerCallFrame::thisObject() const
  75 {
  76     CodeBlock* codeBlock = m_callFrame->codeBlock();
  77     if (!codeBlock)
  78         return 0;
  79
  80     JSValue thisValue = m_callFrame->uncheckedR(codeBlock->thisRegister()).jsValue();
  81     if (!thisValue.isObject())
  82         return 0;
  83
  84     return asObject(thisValue);
  85 }
  86
  87 JSValue DebuggerCallFrame::evaluate(const UString& script, JSValue& exception) const
  88 {
  89     if (!m_callFrame->codeBlock())
  90         return JSValue();
  91
  92     JSGlobalData& globalData = m_callFrame->globalData();
  93     EvalExecutable* eval = EvalExecutable::create(m_callFrame, makeSource(script), m_callFrame->codeBlock()->isStrictMode());
  94     if (globalData.exception) {
  95         exception = globalData.exception;
  96         globalData.exception = JSValue();
  97     }
  98
  99     JSValue result = globalData.interpreter->execute(eval, m_callFrame, thisObject(), m_callFrame->scopeChain());
 100     if (globalData.exception) {
 101         exception = globalData.exception;
 102         globalData.exception = JSValue();
 103     }
 104     ASSERT(result);
 105     return result;
 106 }
 107
 108 } // namespace JSC