runtime/JSNotAnObject.cpp

   1 /*
   2  * Copyright (C) 2008, 2009 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:
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   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
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  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
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  24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29
  30 #include "config.h"
  31 #include "JSNotAnObject.h"
  32
  33 #include <wtf/UnusedParam.h>
  34
  35 namespace JSC {
  36
  37 ASSERT_CLASS_FITS_IN_CELL(JSNotAnObject);
  38
  39 // JSValue methods
  40 JSValue JSNotAnObject::toPrimitive(ExecState* exec, PreferredPrimitiveType) const
  41 {
  42     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  43     return m_exception;
  44 }
  45
  46 bool JSNotAnObject::getPrimitiveNumber(ExecState* exec, double&, JSValue&)
  47 {
  48     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  49     return false;
  50 }
  51
  52 bool JSNotAnObject::toBoolean(ExecState* exec) const
  53 {
  54     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  55     return false;
  56 }
  57
  58 double JSNotAnObject::toNumber(ExecState* exec) const
  59 {
  60     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  61     return NaN;
  62 }
  63
  64 UString JSNotAnObject::toString(ExecState* exec) const
  65 {
  66     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  67     return "";
  68 }
  69
  70 JSObject* JSNotAnObject::toObject(ExecState* exec) const
  71 {
  72     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  73     return m_exception;
  74 }
  75
  76 // Marking
  77 void JSNotAnObject::markChildren(MarkStack& markStack)
  78 {
  79     JSObject::markChildren(markStack);
  80     markStack.append(m_exception);
  81 }
  82
  83 // JSObject methods
  84 bool JSNotAnObject::getOwnPropertySlot(ExecState* exec, const Identifier&, PropertySlot&)
  85 {
  86     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  87     return false;
  88 }
  89
  90 bool JSNotAnObject::getOwnPropertySlot(ExecState* exec, unsigned, PropertySlot&)
  91 {
  92     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  93     return false;
  94 }
  95
  96 bool JSNotAnObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier&, PropertyDescriptor&)
  97 {
  98     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
  99     return false;
 100 }
 101
 102 void JSNotAnObject::put(ExecState* exec, const Identifier& , JSValue, PutPropertySlot&)
 103 {
 104     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
 105 }
 106
 107 void JSNotAnObject::put(ExecState* exec, unsigned, JSValue)
 108 {
 109     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
 110 }
 111
 112 bool JSNotAnObject::deleteProperty(ExecState* exec, const Identifier&)
 113 {
 114     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
 115     return false;
 116 }
 117
 118 bool JSNotAnObject::deleteProperty(ExecState* exec, unsigned)
 119 {
 120     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
 121     return false;
 122 }
 123
 124 void JSNotAnObject::getOwnPropertyNames(ExecState* exec, PropertyNameArray&, EnumerationMode)
 125 {
 126     ASSERT_UNUSED(exec, exec->hadException() && exec->exception() == m_exception);
 127 }
 128
 129 } // namespace JSC