| 1 | /*
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| 2 | * Copyright (C) 1999-2002 Harri Porten ([email protected])
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| 3 | * Copyright (C) 2001 Peter Kelly ([email protected])
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| 4 | * Copyright (C) 2004, 2007, 2008 Apple Inc. All rights reserved.
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU Library General Public
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| 8 | * License as published by the Free Software Foundation; either
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| 9 | * version 2 of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This library is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | * Library General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU Library General Public License
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| 17 | * along with this library; see the file COPYING.LIB. If not, write to
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| 18 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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| 19 | * Boston, MA 02110-1301, USA.
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| 20 | *
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| 21 | */
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| 22 |
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| 23 | #include "config.h"
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| 24 | #include "JSNumberCell.h"
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| 25 |
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| 26 | #include "NumberObject.h"
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| 27 | #include "ustring.h"
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| 28 |
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| 29 | namespace JSC {
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| 30 |
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| 31 | JSValue* JSNumberCell::toPrimitive(ExecState*, PreferredPrimitiveType) const
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| 32 | {
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| 33 | return const_cast<JSNumberCell*>(this);
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| 34 | }
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| 35 |
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| 36 | bool JSNumberCell::getPrimitiveNumber(ExecState*, double& number, JSValue*& value)
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| 37 | {
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| 38 | number = m_value;
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| 39 | value = this;
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| 40 | return true;
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| 41 | }
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| 42 |
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| 43 | bool JSNumberCell::toBoolean(ExecState*) const
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| 44 | {
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| 45 | return m_value < 0.0 || m_value > 0.0; // false for NaN
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| 46 | }
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| 47 |
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| 48 | double JSNumberCell::toNumber(ExecState*) const
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| 49 | {
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| 50 | return m_value;
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| 51 | }
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| 52 |
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| 53 | UString JSNumberCell::toString(ExecState*) const
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| 54 | {
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| 55 | if (m_value == 0.0) // +0.0 or -0.0
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| 56 | return "0";
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| 57 | return UString::from(m_value);
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| 58 | }
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| 59 |
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| 60 | UString JSNumberCell::toThisString(ExecState*) const
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| 61 | {
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| 62 | if (m_value == 0.0) // +0.0 or -0.0
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| 63 | return "0";
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| 64 | return UString::from(m_value);
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| 65 | }
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| 66 |
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| 67 | JSObject* JSNumberCell::toObject(ExecState* exec) const
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| 68 | {
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| 69 | return constructNumber(exec, const_cast<JSNumberCell*>(this));
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| 70 | }
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| 71 |
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| 72 | JSObject* JSNumberCell::toThisObject(ExecState* exec) const
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| 73 | {
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| 74 | return constructNumber(exec, const_cast<JSNumberCell*>(this));
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| 75 | }
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| 76 |
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| 77 | bool JSNumberCell::getUInt32(uint32_t& uint32) const
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| 78 | {
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| 79 | uint32 = static_cast<uint32_t>(m_value);
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| 80 | return uint32 == m_value;
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| 81 | }
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| 82 |
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| 83 | bool JSNumberCell::getTruncatedInt32(int32_t& int32) const
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| 84 | {
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| 85 | if (!(m_value >= -2147483648.0 && m_value < 2147483648.0))
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| 86 | return false;
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| 87 | int32 = static_cast<int32_t>(m_value);
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| 88 | return true;
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| 89 | }
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| 90 |
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| 91 | bool JSNumberCell::getTruncatedUInt32(uint32_t& uint32) const
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| 92 | {
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| 93 | if (!(m_value >= 0.0 && m_value < 4294967296.0))
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| 94 | return false;
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| 95 | uint32 = static_cast<uint32_t>(m_value);
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| 96 | return true;
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| 97 | }
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| 98 |
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| 99 | JSValue* JSNumberCell::getJSNumber()
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| 100 | {
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| 101 | return this;
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| 102 | }
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| 103 |
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| 104 | NEVER_INLINE JSValue* jsNumberCell(ExecState* exec, double d)
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| 105 | {
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| 106 | return new (exec) JSNumberCell(exec, d);
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| 107 | }
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| 108 |
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| 109 | NEVER_INLINE JSValue* jsNaN(ExecState* exec)
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| 110 | {
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| 111 | return new (exec) JSNumberCell(exec, NaN);
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| 112 | }
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| 113 |
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| 114 | } // namespace JSC
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