Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 98 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/JSVariableObject.cpp b/Source/JavaScriptCore/runtime/JSVariableObject.cpp
new file mode 100644
index 000000000..706e3debb
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/JSVariableObject.cpp
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+/*
+ * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer. 
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "JSVariableObject.h"
+
+#include "JSActivation.h"
+#include "JSGlobalObject.h"
+#include "JSStaticScopeObject.h"
+#include "PropertyNameArray.h"
+#include "PropertyDescriptor.h"
+
+namespace JSC {
+
+void JSVariableObject::destroy(JSCell* cell)
+{
+    jsCast<JSVariableObject*>(cell)->JSVariableObject::~JSVariableObject();
+}
+
+bool JSVariableObject::deleteProperty(JSCell* cell, ExecState* exec, const Identifier& propertyName)
+{
+    JSVariableObject* thisObject = jsCast<JSVariableObject*>(cell);
+    if (thisObject->symbolTable().contains(propertyName.impl()))
+        return false;
+
+    return JSObject::deleteProperty(thisObject, exec, propertyName);
+}
+
+void JSVariableObject::getOwnPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
+{
+    JSVariableObject* thisObject = jsCast<JSVariableObject*>(object);
+    SymbolTable::const_iterator end = thisObject->symbolTable().end();
+    for (SymbolTable::const_iterator it = thisObject->symbolTable().begin(); it != end; ++it) {
+        if (!(it->second.getAttributes() & DontEnum) || (mode == IncludeDontEnumProperties))
+            propertyNames.add(Identifier(exec, it->first.get()));
+    }
+    
+    JSObject::getOwnPropertyNames(thisObject, exec, propertyNames, mode);
+}
+
+bool JSVariableObject::symbolTableGet(const Identifier& propertyName, PropertyDescriptor& descriptor)
+{
+    SymbolTableEntry entry = symbolTable().inlineGet(propertyName.impl());
+    if (!entry.isNull()) {
+        descriptor.setDescriptor(registerAt(entry.getIndex()).get(), entry.getAttributes() | DontDelete);
+        return true;
+    }
+    return false;
+}
+
+void JSVariableObject::putWithAttributes(JSObject*, ExecState*, const Identifier&, JSValue, unsigned)
+{
+    ASSERT_NOT_REACHED();
+}
+
+bool JSVariableObject::isDynamicScope(bool& requiresDynamicChecks) const
+{
+    switch (structure()->typeInfo().type()) {
+    case GlobalObjectType:
+        return static_cast<const JSGlobalObject*>(this)->isDynamicScope(requiresDynamicChecks);
+    case ActivationObjectType:
+        return static_cast<const JSActivation*>(this)->isDynamicScope(requiresDynamicChecks);
+    case StaticScopeObjectType:
+        return static_cast<const JSStaticScopeObject*>(this)->isDynamicScope(requiresDynamicChecks);
+    default:
+        ASSERT_NOT_REACHED();
+        break;
+    }
+
+    return false;
+}
+
+} // namespace JSC