JavaScriptCore-521.tar.gz

[apple/javascriptcore.git] / runtime / NumberConstructor.cpp

diff --git a/runtime/NumberConstructor.cpp b/runtime/NumberConstructor.cpp
new file mode 100644 (file)
index 0000000..caa4a70
--- /dev/null
+++ b/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 JSValuePtr numberConstructorNaNValue(ExecState*, const Identifier&, const PropertySlot&);
+static JSValuePtr numberConstructorNegInfinity(ExecState*, const Identifier&, const PropertySlot&);
+static JSValuePtr numberConstructorPosInfinity(ExecState*, const Identifier&, const PropertySlot&);
+static JSValuePtr numberConstructorMaxValue(ExecState*, const Identifier&, const PropertySlot&);
+static JSValuePtr 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<Structure> 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);
+}
+
+JSValuePtr numberConstructorNaNValue(ExecState* exec, const Identifier&, const PropertySlot&)
+{
+    return jsNaN(exec);
+}
+
+JSValuePtr numberConstructorNegInfinity(ExecState* exec, const Identifier&, const PropertySlot&)
+{
+    return jsNumber(exec, -Inf);
+}
+
+JSValuePtr numberConstructorPosInfinity(ExecState* exec, const Identifier&, const PropertySlot&)
+{
+    return jsNumber(exec, Inf);
+}
+
+JSValuePtr numberConstructorMaxValue(ExecState* exec, const Identifier&, const PropertySlot&)
+{
+    return jsNumber(exec, 1.7976931348623157E+308);
+}
+
+JSValuePtr numberConstructorMinValue(ExecState* exec, const Identifier&, const PropertySlot&)
+{
+    return jsNumber(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 JSValuePtr callNumberConstructor(ExecState* exec, JSObject*, JSValuePtr, 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