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      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;
     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 
     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
    130