JavaScriptCore-521.tar.gz

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

diff --git a/runtime/ObjectConstructor.cpp b/runtime/ObjectConstructor.cpp
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+++ b/runtime/ObjectConstructor.cpp
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+/*
+ *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ *  Copyright (C) 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 "ObjectConstructor.h"
+
+#include "JSGlobalObject.h"
+#include "ObjectPrototype.h"
+
+namespace JSC {
+
+ASSERT_CLASS_FITS_IN_CELL(ObjectConstructor);
+
+ObjectConstructor::ObjectConstructor(ExecState* exec, PassRefPtr<Structure> structure, ObjectPrototype* objectPrototype)
+    : InternalFunction(&exec->globalData(), structure, Identifier(exec, "Object"))
+{
+    // ECMA 15.2.3.1
+    putDirectWithoutTransition(exec->propertyNames().prototype, objectPrototype, DontEnum | DontDelete | ReadOnly);
+
+    // no. of arguments for constructor
+    putDirectWithoutTransition(exec->propertyNames().length, jsNumber(exec, 1), ReadOnly | DontEnum | DontDelete);
+}
+
+// ECMA 15.2.2
+static ALWAYS_INLINE JSObject* constructObject(ExecState* exec, const ArgList& args)
+{
+    JSValuePtr arg = args.at(exec, 0);
+    if (arg.isUndefinedOrNull())
+        return new (exec) JSObject(exec->lexicalGlobalObject()->emptyObjectStructure());
+    return arg.toObject(exec);
+}
+
+static JSObject* constructWithObjectConstructor(ExecState* exec, JSObject*, const ArgList& args)
+{
+    return constructObject(exec, args);
+}
+
+ConstructType ObjectConstructor::getConstructData(ConstructData& constructData)
+{
+    constructData.native.function = constructWithObjectConstructor;
+    return ConstructTypeHost;
+}
+
+static JSValuePtr callObjectConstructor(ExecState* exec, JSObject*, JSValuePtr, const ArgList& args)
+{
+    return constructObject(exec, args);
+}
+
+CallType ObjectConstructor::getCallData(CallData& callData)
+{
+    callData.native.function = callObjectConstructor;
+    return CallTypeHost;
+}
+
+} // namespace JSC