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/*
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2003, 2004, 2005, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef JSNumberCell_h
#define JSNumberCell_h
#include "CallFrame.h"
#include "JSCell.h"
#include "JSImmediate.h"
#include "Collector.h"
#include "UString.h"
#include <stddef.h> // for size_t
namespace JSC {
class Identifier;
class JSCell;
class JSObject;
class JSString;
class PropertySlot;
struct ClassInfo;
struct Instruction;
class JSNumberCell : public JSCell {
friend class JIT;
friend JSValuePtr jsNumberCell(JSGlobalData*, double);
friend JSValuePtr jsNaN(JSGlobalData*);
friend JSValuePtr jsNumberCell(ExecState*, double);
friend JSValuePtr jsNaN(ExecState*);
public:
double value() const { return m_value; }
virtual JSValuePtr toPrimitive(ExecState*, PreferredPrimitiveType) const;
virtual bool getPrimitiveNumber(ExecState*, double& number, JSValuePtr& value);
virtual bool toBoolean(ExecState*) const;
virtual double toNumber(ExecState*) const;
virtual UString toString(ExecState*) const;
virtual JSObject* toObject(ExecState*) const;
virtual UString toThisString(ExecState*) const;
virtual JSObject* toThisObject(ExecState*) const;
virtual JSValuePtr getJSNumber();
int32_t toInt32() const;
uint32_t toUInt32() const;
void* operator new(size_t size, ExecState* exec)
{
#ifdef JAVASCRIPTCORE_BUILDING_ALL_IN_ONE_FILE
return exec->heap()->inlineAllocateNumber(size);
#else
return exec->heap()->allocateNumber(size);
#endif
}
void* operator new(size_t size, JSGlobalData* globalData)
{
#ifdef JAVASCRIPTCORE_BUILDING_ALL_IN_ONE_FILE
return globalData->heap.inlineAllocateNumber(size);
#else
return globalData->heap.allocateNumber(size);
#endif
}
static PassRefPtr<Structure> createStructure(JSValuePtr proto) { return Structure::create(proto, TypeInfo(NumberType, NeedsThisConversion)); }
private:
JSNumberCell(JSGlobalData* globalData, double value)
: JSCell(globalData->numberStructure.get())
, m_value(value)
{
}
JSNumberCell(ExecState* exec, double value)
: JSCell(exec->globalData().numberStructure.get())
, m_value(value)
{
}
virtual bool getUInt32(uint32_t&) const;
virtual bool getTruncatedInt32(int32_t&) const;
virtual bool getTruncatedUInt32(uint32_t&) const;
double m_value;
};
extern const double NaN;
extern const double Inf;
JSNumberCell* asNumberCell(JSValuePtr);
JSValuePtr jsNumberCell(JSGlobalData*, double);
JSValuePtr jsNaN(JSGlobalData*);
JSValuePtr jsNumberCell(ExecState*, double);
JSValuePtr jsNaN(ExecState*);
inline JSNumberCell* asNumberCell(JSValuePtr value)
{
ASSERT(asCell(value)->isNumber());
return static_cast<JSNumberCell*>(asCell(value));
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, double d)
{
JSValuePtr v = JSImmediate::from(d);
return v ? v : jsNumberCell(exec, d);
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, short i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(exec, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, unsigned short i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(exec, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, int i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(exec, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, unsigned i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(exec, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, long i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(exec, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, unsigned long i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(exec, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, long long i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(exec, static_cast<double>(i));
}
ALWAYS_INLINE JSValuePtr jsNumber(ExecState* exec, unsigned long long i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(exec, static_cast<double>(i));
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, double d)
{
JSValuePtr v = JSImmediate::from(d);
return v ? v : jsNumberCell(globalData, d);
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, short i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(globalData, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, unsigned short i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(globalData, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, int i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(globalData, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, unsigned i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(globalData, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, long i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(globalData, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, unsigned long i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(globalData, i);
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, long long i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(globalData, static_cast<double>(i));
}
ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData* globalData, unsigned long long i)
{
JSValuePtr v = JSImmediate::from(i);
return v ? v : jsNumberCell(globalData, static_cast<double>(i));
}
// --- JSValue inlines ----------------------------
inline double JSValue::uncheckedGetNumber() const
{
ASSERT(JSImmediate::isImmediate(asValue()) || asCell()->isNumber());
return JSImmediate::isImmediate(asValue()) ? JSImmediate::toDouble(asValue()) : asNumberCell(asValue())->value();
}
inline int32_t JSNumberCell::toInt32() const
{
if (m_value >= -2147483648.0 && m_value < 2147483648.0)
return static_cast<int32_t>(m_value);
bool scratch;
return JSC::toInt32SlowCase(m_value, scratch);
}
inline uint32_t JSNumberCell::toUInt32() const
{
if (m_value >= 0.0 && m_value < 4294967296.0)
return static_cast<uint32_t>(m_value);
bool scratch;
return JSC::toUInt32SlowCase(m_value, scratch);
}
ALWAYS_INLINE JSValuePtr JSValue::toJSNumber(ExecState* exec) const
{
return JSImmediate::isNumber(asValue()) ? asValue() : jsNumber(exec, this->toNumber(exec));
}
} // namespace JSC
#endif // JSNumberCell_h
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