runtime/JSPropertyNameIterator.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 "JSPropertyNameIterator.h"
  31
  32 namespace JSC {
  33
  34 ASSERT_CLASS_FITS_IN_CELL(JSPropertyNameIterator);
  35
  36 JSPropertyNameIterator::~JSPropertyNameIterator()
  37 {
  38 }
  39
  40 JSValuePtr JSPropertyNameIterator::toPrimitive(ExecState*, PreferredPrimitiveType) const
  41 {
  42     ASSERT_NOT_REACHED();
  43     return noValue();
  44 }
  45
  46 bool JSPropertyNameIterator::getPrimitiveNumber(ExecState*, double&, JSValuePtr&)
  47 {
  48     ASSERT_NOT_REACHED();
  49     return false;
  50 }
  51
  52 bool JSPropertyNameIterator::toBoolean(ExecState*) const
  53 {
  54     ASSERT_NOT_REACHED();
  55     return false;
  56 }
  57
  58 double JSPropertyNameIterator::toNumber(ExecState*) const
  59 {
  60     ASSERT_NOT_REACHED();
  61     return 0;
  62 }
  63
  64 UString JSPropertyNameIterator::toString(ExecState*) const
  65 {
  66     ASSERT_NOT_REACHED();
  67     return "";
  68 }
  69
  70 JSObject* JSPropertyNameIterator::toObject(ExecState*) const
  71 {
  72     ASSERT_NOT_REACHED();
  73     return 0;
  74 }
  75
  76 void JSPropertyNameIterator::mark()
  77 {
  78     JSCell::mark();
  79     if (m_object && !m_object->marked())
  80         m_object->mark();
  81 }
  82
  83 void JSPropertyNameIterator::invalidate()
  84 {
  85     ASSERT(m_position == m_end);
  86     m_object = 0;
  87     m_data.clear();
  88 }
  89
  90 } // namespace JSC