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Diffstat (limited to 'src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSNumberCell.h')
| -rw-r--r-- | src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSNumberCell.h | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSNumberCell.h b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSNumberCell.h new file mode 100644 index 0000000..e9e2470 --- /dev/null +++ b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSNumberCell.h @@ -0,0 +1,359 @@ +/* + * 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; + +#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)); } + + 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 |