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:
   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;
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  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
  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());
  43     return jsNumber(0);
  44 }
  45
  46 bool JSNotAnObject::getPrimitiveNumber(ExecState* exec, double&, JSValue&)
  47 {
  48     ASSERT_UNUSED(exec, exec->hadException());
  49     return false;
  50 }
  51
  52 bool JSNotAnObject::toBoolean(ExecState* exec) const
  53 {
  54     ASSERT_UNUSED(exec, exec->hadException());
  55     return false;
  56 }
  57
  58 double JSNotAnObject::toNumber(ExecState* exec) const
  59 {
  60     ASSERT_UNUSED(exec, exec->hadException());
  61     return NaN;
  62 }
  63
  64 UString JSNotAnObject::toString(ExecState* exec) const
  65 {
  66     ASSERT_UNUSED(exec, exec->hadException());
  67     return "";
  68 }
  69
  70 JSObject* JSNotAnObject::toObject(ExecState* exec, JSGlobalObject*) const
  71 {
  72     ASSERT_UNUSED(exec, exec->hadException());
  73     return const_cast<JSNotAnObject*>(this);
  74 }
  75
  76 // JSObject methods
  77 bool JSNotAnObject::getOwnPropertySlot(ExecState* exec, const Identifier&, PropertySlot&)
  78 {
  79     ASSERT_UNUSED(exec, exec->hadException());
  80     return false;
  81 }
  82
  83 bool JSNotAnObject::getOwnPropertySlot(ExecState* exec, unsigned, PropertySlot&)
  84 {
  85     ASSERT_UNUSED(exec, exec->hadException());
  86     return false;
  87 }
  88
  89 bool JSNotAnObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier&, PropertyDescriptor&)
  90 {
  91     ASSERT_UNUSED(exec, exec->hadException());
  92     return false;
  93 }
  94
  95 void JSNotAnObject::put(ExecState* exec, const Identifier& , JSValue, PutPropertySlot&)
  96 {
  97     ASSERT_UNUSED(exec, exec->hadException());
  98 }
  99
 100 void JSNotAnObject::put(ExecState* exec, unsigned, JSValue)
 101 {
 102     ASSERT_UNUSED(exec, exec->hadException());
 103 }
 104
 105 bool JSNotAnObject::deleteProperty(ExecState* exec, const Identifier&)
 106 {
 107     ASSERT_UNUSED(exec, exec->hadException());
 108     return false;
 109 }
 110
 111 bool JSNotAnObject::deleteProperty(ExecState* exec, unsigned)
 112 {
 113     ASSERT_UNUSED(exec, exec->hadException());
 114     return false;
 115 }
 116
 117 void JSNotAnObject::getOwnPropertyNames(ExecState* exec, PropertyNameArray&, EnumerationMode)
 118 {
 119     ASSERT_UNUSED(exec, exec->hadException());
 120 }
 121
 122 } // namespace JSC