runtime/JSNumberCell.cpp

   1 /*
   2  *  Copyright (C) 1999-2002 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   4  *  Copyright (C) 2004, 2007, 2008 Apple Inc. All rights reserved.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Library General Public
   8  *  License as published by the Free Software Foundation; either
   9  *  version 2 of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Library General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Library General Public License
  17  *  along with this library; see the file COPYING.LIB.  If not, write to
  18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #include "config.h"
  24 #include "JSNumberCell.h"
  25
  26 #if USE(JSVALUE32)
  27
  28 #include "NumberObject.h"
  29 #include "UString.h"
  30
  31 namespace JSC {
  32
  33 JSValue JSNumberCell::toPrimitive(ExecState*, PreferredPrimitiveType) const
  34 {
  35     return const_cast<JSNumberCell*>(this);
  36 }
  37
  38 bool JSNumberCell::getPrimitiveNumber(ExecState*, double& number, JSValue& value)
  39 {
  40     number = m_value;
  41     value = this;
  42     return true;
  43 }
  44
  45 bool JSNumberCell::toBoolean(ExecState*) const
  46 {
  47     return m_value < 0.0 || m_value > 0.0; // false for NaN
  48 }
  49
  50 double JSNumberCell::toNumber(ExecState*) const
  51 {
  52   return m_value;
  53 }
  54
  55 UString JSNumberCell::toString(ExecState*) const
  56 {
  57     if (m_value == 0.0) // +0.0 or -0.0
  58         return "0";
  59     return UString::from(m_value);
  60 }
  61
  62 UString JSNumberCell::toThisString(ExecState*) const
  63 {
  64     if (m_value == 0.0) // +0.0 or -0.0
  65         return "0";
  66     return UString::from(m_value);
  67 }
  68
  69 JSObject* JSNumberCell::toObject(ExecState* exec) const
  70 {
  71     return constructNumber(exec, const_cast<JSNumberCell*>(this));
  72 }
  73
  74 JSObject* JSNumberCell::toThisObject(ExecState* exec) const
  75 {
  76     return constructNumber(exec, const_cast<JSNumberCell*>(this));
  77 }
  78
  79 bool JSNumberCell::getUInt32(uint32_t& uint32) const
  80 {
  81     uint32 = static_cast<uint32_t>(m_value);
  82     return uint32 == m_value;
  83 }
  84
  85 JSValue JSNumberCell::getJSNumber()
  86 {
  87     return this;
  88 }
  89
  90 JSValue jsNumberCell(ExecState* exec, double d)
  91 {
  92     return new (exec) JSNumberCell(exec, d);
  93 }
  94
  95 JSValue jsNumberCell(JSGlobalData* globalData, double d)
  96 {
  97     return new (globalData) JSNumberCell(globalData, d);
  98 }
  99
 100 } // namespace JSC
 101
 102 #else // USE(JSVALUE32)
 103
 104 // Keep our exported symbols lists happy.
 105 namespace JSC {
 106
 107 JSValue jsNumberCell(ExecState*, double);
 108
 109 JSValue jsNumberCell(ExecState*, double)
 110 {
 111     ASSERT_NOT_REACHED();
 112     return JSValue();
 113 }
 114
 115 } // namespace JSC
 116
 117 #endif // USE(JSVALUE32)