--- /dev/null
+/*
+ * 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;
+
+ JSValuePtr jsNumberCell(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 JSValuePtr jsNumberCell(JSGlobalData*, double);
+ friend JSValuePtr jsNumberCell(ExecState*, double);
+ 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();
+
+ 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;
+ };
+
+ JSValuePtr jsNumberCell(JSGlobalData*, double);
+
+ inline bool isNumberCell(JSValuePtr v)
+ {
+ return v.isCell() && v.asCell()->isNumber();
+ }
+
+ inline JSNumberCell* asNumberCell(JSValuePtr v)
+ {
+ ASSERT(isNumberCell(v));
+ return static_cast<JSNumberCell*>(v.asCell());
+ }
+
+ 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, 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, 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));
+ }
+
+ inline bool JSValuePtr::isDoubleNumber() const
+ {
+ return isNumberCell(asValue());
+ }
+
+ inline double JSValuePtr::getDoubleNumber() const
+ {
+ return asNumberCell(asValue())->value();
+ }
+
+ inline bool JSValuePtr::isNumber() const
+ {
+ return JSImmediate::isNumber(asValue()) || isDoubleNumber();
+ }
+
+ inline double JSValuePtr::uncheckedGetNumber() const
+ {
+ ASSERT(isNumber());
+ return JSImmediate::isImmediate(asValue()) ? JSImmediate::toDouble(asValue()) : getDoubleNumber();
+ }
+
+#else
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, double d)
+ {
+ JSValuePtr v = JSImmediate::from(d);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, int i)
+ {
+ JSValuePtr v = JSImmediate::from(i);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, unsigned i)
+ {
+ JSValuePtr v = JSImmediate::from(i);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, long i)
+ {
+ JSValuePtr v = JSImmediate::from(i);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, unsigned long i)
+ {
+ JSValuePtr v = JSImmediate::from(i);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, long long i)
+ {
+ JSValuePtr v = JSImmediate::from(static_cast<double>(i));
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, unsigned long long i)
+ {
+ JSValuePtr v = JSImmediate::from(static_cast<double>(i));
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, double d)
+ {
+ JSValuePtr v = JSImmediate::from(d);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, int i)
+ {
+ JSValuePtr v = JSImmediate::from(i);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, unsigned i)
+ {
+ JSValuePtr v = JSImmediate::from(i);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, long i)
+ {
+ JSValuePtr v = JSImmediate::from(i);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, unsigned long i)
+ {
+ JSValuePtr v = JSImmediate::from(i);
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, long long i)
+ {
+ JSValuePtr v = JSImmediate::from(static_cast<double>(i));
+ ASSERT(v);
+ return v;
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, unsigned long long i)
+ {
+ JSValuePtr v = JSImmediate::from(static_cast<double>(i));
+ ASSERT(v);
+ return v;
+ }
+
+ inline bool JSValuePtr::isDoubleNumber() const
+ {
+ return JSImmediate::isDoubleNumber(asValue());
+ }
+
+ inline double JSValuePtr::getDoubleNumber() const
+ {
+ return JSImmediate::doubleValue(asValue());
+ }
+
+ inline bool JSValuePtr::isNumber() const
+ {
+ return JSImmediate::isNumber(asValue());
+ }
+
+ inline double JSValuePtr::uncheckedGetNumber() const
+ {
+ ASSERT(isNumber());
+ return JSImmediate::toDouble(asValue());
+ }
+
+#endif
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, char i)
+ {
+ ASSERT(JSImmediate::from(i));
+ return JSImmediate::from(i);
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, unsigned char i)
+ {
+ ASSERT(JSImmediate::from(i));
+ return JSImmediate::from(i);
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, short i)
+ {
+ ASSERT(JSImmediate::from(i));
+ return JSImmediate::from(i);
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(ExecState*, unsigned short i)
+ {
+ ASSERT(JSImmediate::from(i));
+ return JSImmediate::from(i);
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, short i)
+ {
+ ASSERT(JSImmediate::from(i));
+ return JSImmediate::from(i);
+ }
+
+ ALWAYS_INLINE JSValuePtr jsNumber(JSGlobalData*, unsigned short i)
+ {
+ ASSERT(JSImmediate::from(i));
+ return JSImmediate::from(i);
+ }
+
+ inline JSValuePtr jsNaN(ExecState* exec)
+ {
+ return jsNumber(exec, NaN);
+ }
+
+ inline JSValuePtr jsNaN(JSGlobalData* globalData)
+ {
+ return jsNumber(globalData, NaN);
+ }
+
+ // --- JSValue inlines ----------------------------
+
+ ALWAYS_INLINE JSValuePtr JSValuePtr::toJSNumber(ExecState* exec) const
+ {
+ return isNumber() ? asValue() : jsNumber(exec, this->toNumber(exec));
+ }
+
+ inline bool JSValuePtr::getNumber(double &result) const
+ {
+ if (isInt32Fast())
+ result = getInt32Fast();
+ else if (LIKELY(isDoubleNumber()))
+ result = getDoubleNumber();
+ else {
+ ASSERT(!isNumber());
+ return false;
+ }
+ return true;
+ }
+
+ inline bool JSValuePtr::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 JSValuePtr::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
projects / apple / javascriptcore.git / blobdiff