Imported WebKit commit 3a8c29f35d00659d2ce7a0ccdfa8304f14e82327 (http://svn.webkit.org/repository/webkit/trunk@120813)

New snapshot with Windows build fixes

1 files changed, 163 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/JSSymbolTableObject.h b/Source/JavaScriptCore/runtime/JSSymbolTableObject.h
new file mode 100644
index 000000000..2bbe21d06
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/JSSymbolTableObject.h
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#ifndef JSSymbolTableObject_h
+#define JSSymbolTableObject_h
+
+#include "JSObject.h"
+#include "PropertyDescriptor.h"
+#include "SymbolTable.h"
+
+namespace JSC {
+
+class JSSymbolTableObject : public JSNonFinalObject {
+public:
+    typedef JSNonFinalObject Base;
+    
+    SymbolTable& symbolTable() const { return *m_symbolTable; }
+    
+    JS_EXPORT_PRIVATE static void destroy(JSCell*);
+    
+    static NO_RETURN_DUE_TO_ASSERT void putDirectVirtual(JSObject*, ExecState*, PropertyName, JSValue, unsigned attributes);
+    
+    JS_EXPORT_PRIVATE static bool deleteProperty(JSCell*, ExecState*, PropertyName);
+    JS_EXPORT_PRIVATE static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
+    
+    bool isDynamicScope(bool& requiresDynamicChecks) const;
+    
+protected:
+    static const unsigned StructureFlags = OverridesGetPropertyNames | JSNonFinalObject::StructureFlags;
+    
+    JSSymbolTableObject(JSGlobalData& globalData, Structure* structure, SymbolTable* symbolTable)
+        : JSNonFinalObject(globalData, structure)
+        , m_symbolTable(symbolTable)
+    {
+    }
+    
+    void finishCreation(JSGlobalData& globalData)
+    {
+        Base::finishCreation(globalData);
+        ASSERT(m_symbolTable);
+    }
+    
+    SymbolTable* m_symbolTable;
+};
+
+template<typename SymbolTableObjectType>
+inline bool symbolTableGet(
+    SymbolTableObjectType* object, PropertyName propertyName, PropertySlot& slot)
+{
+    SymbolTable& symbolTable = object->symbolTable();
+    SymbolTable::iterator iter = symbolTable.find(propertyName.publicName());
+    if (iter == symbolTable.end())
+        return false;
+    SymbolTableEntry::Fast entry = iter->second;
+    ASSERT(!entry.isNull());
+    slot.setValue(object->registerAt(entry.getIndex()).get());
+    return true;
+}
+
+template<typename SymbolTableObjectType>
+inline bool symbolTableGet(
+    SymbolTableObjectType* object, PropertyName propertyName, PropertyDescriptor& descriptor)
+{
+    SymbolTable& symbolTable = object->symbolTable();
+    SymbolTable::iterator iter = symbolTable.find(propertyName.publicName());
+    if (iter == symbolTable.end())
+        return false;
+    SymbolTableEntry::Fast entry = iter->second;
+    ASSERT(!entry.isNull());
+    descriptor.setDescriptor(
+        object->registerAt(entry.getIndex()).get(), entry.getAttributes() | DontDelete);
+    return true;
+}
+
+template<typename SymbolTableObjectType>
+inline bool symbolTableGet(
+    SymbolTableObjectType* object, PropertyName propertyName, PropertySlot& slot,
+    bool& slotIsWriteable)
+{
+    SymbolTable& symbolTable = object->symbolTable();
+    SymbolTable::iterator iter = symbolTable.find(propertyName.publicName());
+    if (iter == symbolTable.end())
+        return false;
+    SymbolTableEntry::Fast entry = iter->second;
+    ASSERT(!entry.isNull());
+    slot.setValue(object->registerAt(entry.getIndex()).get());
+    slotIsWriteable = !entry.isReadOnly();
+    return true;
+}
+
+template<typename SymbolTableObjectType>
+inline bool symbolTablePut(
+    SymbolTableObjectType* object, ExecState* exec, PropertyName propertyName, JSValue value,
+    bool shouldThrow)
+{
+    JSGlobalData& globalData = exec->globalData();
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(object));
+    
+    SymbolTable& symbolTable = object->symbolTable();
+    SymbolTable::iterator iter = symbolTable.find(propertyName.publicName());
+    if (iter == symbolTable.end())
+        return false;
+    bool wasFat;
+    SymbolTableEntry::Fast fastEntry = iter->second.getFast(wasFat);
+    ASSERT(!fastEntry.isNull());
+    if (fastEntry.isReadOnly()) {
+        if (shouldThrow)
+            throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
+        return true;
+    }
+    if (UNLIKELY(wasFat))
+        iter->second.notifyWrite();
+    object->registerAt(fastEntry.getIndex()).set(globalData, object, value);
+    return true;
+}
+
+template<typename SymbolTableObjectType>
+inline bool symbolTablePutWithAttributes(
+    SymbolTableObjectType* object, JSGlobalData& globalData, PropertyName propertyName,
+    JSValue value, unsigned attributes)
+{
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(object));
+    
+    SymbolTable::iterator iter = object->symbolTable().find(propertyName.publicName());
+    if (iter == object->symbolTable().end())
+        return false;
+    SymbolTableEntry& entry = iter->second;
+    ASSERT(!entry.isNull());
+    entry.notifyWrite();
+    entry.setAttributes(attributes);
+    object->registerAt(entry.getIndex()).set(globalData, object, value);
+    return true;
+}
+
+} // namespace JSC
+
+#endif // JSSymbolTableObject_h
+