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-rw-r--r--JavaScriptCore/runtime/NumberConstructor.cpp123
1 files changed, 123 insertions, 0 deletions
diff --git a/JavaScriptCore/runtime/NumberConstructor.cpp b/JavaScriptCore/runtime/NumberConstructor.cpp
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+/*
+ * 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