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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 {
extern const double NaN;
extern const double Inf;
JSValue jsNumberCell(ExecState*, double);
JSValue jsAPIMangledNumber(ExecState*, double);
#if !USE(ALTERNATE_JSIMMEDIATE)
class Identifier;
class JSCell;
class JSObject;
class JSString;
class PropertySlot;
struct ClassInfo;
struct Instruction;
class JSNumberCell : public JSCell {
friend class JIT;
friend JSValue jsNumberCell(JSGlobalData*, double);
friend JSValue jsNumberCell(ExecState*, double);
friend JSValue jsAPIMangledNumber(ExecState*, double);
public:
double value() const { return m_value; }
virtual JSValue toPrimitive(ExecState*, PreferredPrimitiveType) const;
virtual bool getPrimitiveNumber(ExecState*, double& number, JSValue& 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 JSValue getJSNumber();
static const uintptr_t JSAPIMangledMagicNumber = 0xbbadbeef;
bool isAPIMangledNumber() const { return m_structure == reinterpret_cast<Structure*>(JSAPIMangledMagicNumber); }
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(JSValue 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)
{
}
enum APIMangledTag { APIMangled };
JSNumberCell(APIMangledTag, double value)
: JSCell(reinterpret_cast<Structure*>(JSAPIMangledMagicNumber))
, m_value(value)
{
}
virtual bool getUInt32(uint32_t&) const;
virtual bool getTruncatedInt32(int32_t&) const;
virtual bool getTruncatedUInt32(uint32_t&) const;
double m_value;
};
JSValue jsNumberCell(JSGlobalData*, double);
inline bool isNumberCell(JSValue v)
{
return v.isCell() && v.asCell()->isNumber();
}
inline JSNumberCell* asNumberCell(JSValue v)
{
ASSERT(isNumberCell(v));
return static_cast<JSNumberCell*>(v.asCell());
}
inline JSValue::JSValue(ExecState* exec, double d)
{
JSValue v = JSImmediate::from(d);
*this = v ? v : jsNumberCell(exec, d);
}
inline JSValue::JSValue(ExecState* exec, int i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, i);
}
inline JSValue::JSValue(ExecState* exec, unsigned i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, i);
}
inline JSValue::JSValue(ExecState* exec, long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, i);
}
inline JSValue::JSValue(ExecState* exec, unsigned long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, i);
}
inline JSValue::JSValue(ExecState* exec, long long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, static_cast<double>(i));
}
inline JSValue::JSValue(ExecState* exec, unsigned long long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(exec, static_cast<double>(i));
}
inline JSValue::JSValue(JSGlobalData* globalData, double d)
{
JSValue v = JSImmediate::from(d);
*this = v ? v : jsNumberCell(globalData, d);
}
inline JSValue::JSValue(JSGlobalData* globalData, int i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(globalData, i);
}
inline JSValue::JSValue(JSGlobalData* globalData, unsigned i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(globalData, i);
}
inline JSValue::JSValue(JSGlobalData* globalData, long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(globalData, i);
}
inline JSValue::JSValue(JSGlobalData* globalData, unsigned long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(globalData, i);
}
inline JSValue::JSValue(JSGlobalData* globalData, long long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(globalData, static_cast<double>(i));
}
inline JSValue::JSValue(JSGlobalData* globalData, unsigned long long i)
{
JSValue v = JSImmediate::from(i);
*this = v ? v : jsNumberCell(globalData, static_cast<double>(i));
}
inline bool JSValue::isDoubleNumber() const
{
return isNumberCell(asValue());
}
inline double JSValue::getDoubleNumber() const
{
return asNumberCell(asValue())->value();
}
inline bool JSValue::isNumber() const
{
return JSImmediate::isNumber(asValue()) || isDoubleNumber();
}
inline double JSValue::uncheckedGetNumber() const
{
ASSERT(isNumber());
return JSImmediate::isImmediate(asValue()) ? JSImmediate::toDouble(asValue()) : getDoubleNumber();
}
inline bool JSValue::isAPIMangledNumber()
{
ASSERT(isNumber());
return JSImmediate::isImmediate(asValue()) ? false : asNumberCell(asValue())->isAPIMangledNumber();
}
#else
inline JSValue::JSValue(ExecState*, double d)
{
JSValue v = JSImmediate::from(d);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, int i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, unsigned i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, long i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, unsigned long i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, long long i)
{
JSValue v = JSImmediate::from(static_cast<double>(i));
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(ExecState*, unsigned long long i)
{
JSValue v = JSImmediate::from(static_cast<double>(i));
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, double d)
{
JSValue v = JSImmediate::from(d);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, int i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, unsigned i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, long i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, unsigned long i)
{
JSValue v = JSImmediate::from(i);
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, long long i)
{
JSValue v = JSImmediate::from(static_cast<double>(i));
ASSERT(v);
*this = v;
}
inline JSValue::JSValue(JSGlobalData*, unsigned long long i)
{
JSValue v = JSImmediate::from(static_cast<double>(i));
ASSERT(v);
*this = v;
}
inline bool JSValue::isDoubleNumber() const
{
return JSImmediate::isDoubleNumber(asValue());
}
inline double JSValue::getDoubleNumber() const
{
return JSImmediate::doubleValue(asValue());
}
inline bool JSValue::isNumber() const
{
return JSImmediate::isNumber(asValue());
}
inline double JSValue::uncheckedGetNumber() const
{
ASSERT(isNumber());
return JSImmediate::toDouble(asValue());
}
#endif
inline JSValue::JSValue(ExecState*, char i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(ExecState*, unsigned char i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(ExecState*, short i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(ExecState*, unsigned short i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(JSGlobalData*, char i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(JSGlobalData*, unsigned char i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(JSGlobalData*, short i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue::JSValue(JSGlobalData*, unsigned short i)
{
ASSERT(JSImmediate::from(i));
*this = JSImmediate::from(i);
}
inline JSValue jsNaN(ExecState* exec)
{
return jsNumber(exec, NaN);
}
inline JSValue jsNaN(JSGlobalData* globalData)
{
return jsNumber(globalData, NaN);
}
// --- JSValue inlines ----------------------------
ALWAYS_INLINE JSValue JSValue::toJSNumber(ExecState* exec) const
{
return isNumber() ? asValue() : jsNumber(exec, this->toNumber(exec));
}
inline bool JSValue::getNumber(double &result) const
{
if (isInt32Fast())
result = getInt32Fast();
else if (LIKELY(isDoubleNumber()))
result = getDoubleNumber();
else {
ASSERT(!isNumber());
return false;
}
return true;
}
inline bool JSValue::numberToInt32(int32_t& arg)
{
if (isInt32Fast())
arg = getInt32Fast();
else if (LIKELY(isDoubleNumber()))
arg = JSC::toInt32(getDoubleNumber());
else {
ASSERT(!isNumber());
return false;
}
return true;
}
inline bool JSValue::numberToUInt32(uint32_t& arg)
{
if (isUInt32Fast())
arg = getUInt32Fast();
else if (LIKELY(isDoubleNumber()))
arg = JSC::toUInt32(getDoubleNumber());
else if (isInt32Fast()) {
// FIXME: I think this case can be merged with the uint case; toUInt32SlowCase
// on a negative value is equivalent to simple static_casting.
bool ignored;
arg = toUInt32SlowCase(getInt32Fast(), ignored);
} else {
ASSERT(!isNumber());
return false;
}
return true;
}
} // namespace JSC
#endif // JSNumberCell_h
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