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Diffstat (limited to 'JavaScriptCore/runtime/NumberConstructor.cpp')
-rw-r--r-- | JavaScriptCore/runtime/NumberConstructor.cpp | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/JavaScriptCore/runtime/NumberConstructor.cpp b/JavaScriptCore/runtime/NumberConstructor.cpp new file mode 100644 index 0000000..5b6ccf8 --- /dev/null +++ b/JavaScriptCore/runtime/NumberConstructor.cpp @@ -0,0 +1,123 @@ +/* + * Copyright (C) 1999-2000,2003 Harri Porten (porten@kde.org) + * Copyright (C) 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 Lesser 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 + * USA + * + */ + +#include "config.h" +#include "NumberConstructor.h" + +#include "NumberObject.h" +#include "NumberPrototype.h" + +namespace JSC { + +ASSERT_CLASS_FITS_IN_CELL(NumberConstructor); + +static JSValue* numberConstructorNaNValue(ExecState*, const Identifier&, const PropertySlot&); +static JSValue* numberConstructorNegInfinity(ExecState*, const Identifier&, const PropertySlot&); +static JSValue* numberConstructorPosInfinity(ExecState*, const Identifier&, const PropertySlot&); +static JSValue* numberConstructorMaxValue(ExecState*, const Identifier&, const PropertySlot&); +static JSValue* numberConstructorMinValue(ExecState*, const Identifier&, const PropertySlot&); + +} // namespace JSC + +#include "NumberConstructor.lut.h" + +namespace JSC { + +const ClassInfo NumberConstructor::info = { "Function", &InternalFunction::info, 0, ExecState::numberTable }; + +/* Source for NumberConstructor.lut.h +@begin numberTable + NaN numberConstructorNaNValue DontEnum|DontDelete|ReadOnly + NEGATIVE_INFINITY numberConstructorNegInfinity DontEnum|DontDelete|ReadOnly + POSITIVE_INFINITY numberConstructorPosInfinity DontEnum|DontDelete|ReadOnly + MAX_VALUE numberConstructorMaxValue DontEnum|DontDelete|ReadOnly + MIN_VALUE numberConstructorMinValue DontEnum|DontDelete|ReadOnly +@end +*/ + +NumberConstructor::NumberConstructor(ExecState* exec, PassRefPtr<StructureID> structure, NumberPrototype* numberPrototype) + : InternalFunction(&exec->globalData(), structure, Identifier(exec, numberPrototype->info.className)) +{ + // Number.Prototype + putDirectWithoutTransition(exec->propertyNames().prototype, numberPrototype, DontEnum | DontDelete | ReadOnly); + + // no. of arguments for constructor + putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete); +} + +bool NumberConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot) +{ + return getStaticValueSlot<NumberConstructor, InternalFunction>(exec, ExecState::numberTable(exec), this, propertyName, slot); +} + +JSValue* numberConstructorNaNValue(ExecState* exec, const Identifier&, const PropertySlot&) +{ + return jsNaN(exec); +} + +JSValue* numberConstructorNegInfinity(ExecState* exec, const Identifier&, const PropertySlot&) +{ + return jsNumberCell(exec, -Inf); +} + +JSValue* numberConstructorPosInfinity(ExecState* exec, const Identifier&, const PropertySlot&) +{ + return jsNumberCell(exec, Inf); +} + +JSValue* numberConstructorMaxValue(ExecState* exec, const Identifier&, const PropertySlot&) +{ + return jsNumberCell(exec, 1.7976931348623157E+308); +} + +JSValue* numberConstructorMinValue(ExecState* exec, const Identifier&, const PropertySlot&) +{ + return jsNumberCell(exec, 5E-324); +} + +// ECMA 15.7.1 +static JSObject* constructWithNumberConstructor(ExecState* exec, JSObject*, const ArgList& args) +{ + NumberObject* object = new (exec) NumberObject(exec->lexicalGlobalObject()->numberObjectStructure()); + double n = args.isEmpty() ? 0 : args.at(exec, 0)->toNumber(exec); + object->setInternalValue(jsNumber(exec, n)); + return object; +} + +ConstructType NumberConstructor::getConstructData(ConstructData& constructData) +{ + constructData.native.function = constructWithNumberConstructor; + return ConstructTypeHost; +} + +// ECMA 15.7.2 +static JSValue* callNumberConstructor(ExecState* exec, JSObject*, JSValue*, const ArgList& args) +{ + return jsNumber(exec, args.isEmpty() ? 0 : args.at(exec, 0)->toNumber(exec)); +} + +CallType NumberConstructor::getCallData(CallData& callData) +{ + callData.native.function = callNumberConstructor; + return CallTypeHost; +} + +} // namespace JSC |