android_external_webkit/JavaScriptCore/runtime/JSNumberCell.h at froyo · madmack/android_external_webkit · GitHub

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* 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;

#if USE(JSVALUE32)

JSValue jsNumberCell(ExecState*, double);

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);

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();

void* operator new(size_t size, ExecState* exec)

{

return exec->heap()->allocateNumber(size);

}

void* operator new(size_t size, JSGlobalData* globalData)

{

return globalData->heap.allocateNumber(size);

}

static PassRefPtr<Structure> createStructure(JSValue proto) { return Structure::create(proto, TypeInfo(NumberType, OverridesGetOwnPropertySlot | NeedsThisConversion), AnonymousSlotCount); }

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;

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());

}

ALWAYS_INLINE JSValue::JSValue(EncodeAsDoubleTag, ExecState* exec, double d)

{

*this = jsNumberCell(exec, d);

}

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 bool JSValue::isDouble() const

{

return isNumberCell(asValue());

}

inline double JSValue::asDouble() const

{

return asNumberCell(asValue())->value();

}

inline bool JSValue::isNumber() const

{

return JSImmediate::isNumber(asValue()) || isDouble();

}

inline double JSValue::uncheckedGetNumber() const

{

ASSERT(isNumber());

return JSImmediate::isImmediate(asValue()) ? JSImmediate::toDouble(asValue()) : asDouble();

}

#endif // USE(JSVALUE32)

#if USE(JSVALUE64)

ALWAYS_INLINE JSValue::JSValue(EncodeAsDoubleTag, ExecState*, double d)

{

*this = JSImmediate::fromNumberOutsideIntegerRange(d);

}

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 bool JSValue::isDouble() const

{

return JSImmediate::isDouble(asValue());

}

inline double JSValue::asDouble() 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 // USE(JSVALUE64)

#if USE(JSVALUE32) || USE(JSVALUE64)

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 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 (isInt32())

result = asInt32();

else if (LIKELY(isDouble()))

result = asDouble();

else {

ASSERT(!isNumber());

return false;

}

return true;

}

#endif // USE(JSVALUE32) || USE(JSVALUE64)

} // namespace JSC

#endif // JSNumberCell_h

android_external_webkit/JavaScriptCore/runtime/JSNumberCell.h at froyo · madmack/android_external_webkit · GitHub

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