--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/runtime/JSNumberCell.h Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,358 @@
+/*
+ * 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 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