webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 116 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/ProxyObject.h b/Source/JavaScriptCore/runtime/ProxyObject.h
new file mode 100644
index 000000000..dc2eae122
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/ProxyObject.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2016 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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.
+ */
+
+#pragma once
+
+#include "JSGlobalObject.h"
+#include "JSObject.h"
+#include "RuntimeType.h"
+
+namespace JSC {
+
+class ProxyObject : public JSNonFinalObject {
+public:
+    typedef JSNonFinalObject Base;
+
+    const static unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | TypeOfShouldCallGetCallData | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero | OverridesGetPropertyNames | ProhibitsPropertyCaching;
+
+    static ProxyObject* create(ExecState* exec, JSGlobalObject* globalObject, JSValue target, JSValue handler)
+    {
+        VM& vm = exec->vm();
+        ProxyObject* proxy = new (NotNull, allocateCell<ProxyObject>(vm.heap)) ProxyObject(vm, ProxyObject::structureForTarget(globalObject, target));
+        proxy->finishCreation(vm, exec, target, handler);
+        return proxy;
+    }
+
+    static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype, bool isCallable)
+    {
+        unsigned flags = StructureFlags;
+        if (isCallable)
+            flags |= (ImplementsHasInstance | ImplementsDefaultHasInstance);
+        Structure* result = Structure::create(vm, globalObject, prototype, TypeInfo(ProxyObjectType, flags), info(), NonArray | MayHaveIndexedAccessors);
+        result->setIsQuickPropertyAccessAllowedForEnumeration(false);
+        RELEASE_ASSERT(!result->canAccessPropertiesQuicklyForEnumeration());
+        RELEASE_ASSERT(!result->canCachePropertyNameEnumerator());
+        return result;
+    }
+
+    DECLARE_EXPORT_INFO;
+
+    JSObject* target() const { return m_target.get(); }
+    JSValue handler() const { return m_handler.get(); }
+
+    static bool put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
+    static bool putByIndex(JSCell*, ExecState*, unsigned propertyName, JSValue, bool shouldThrow);
+    bool putByIndexCommon(ExecState*, JSValue thisValue, unsigned propertyName, JSValue putValue, bool shouldThrow);
+    JSValue performGetPrototype(ExecState*);
+    void revoke(VM&);
+    bool isRevoked() const;
+
+private:
+    ProxyObject(VM&, Structure*);
+    void finishCreation(VM&, ExecState*, JSValue target, JSValue handler);
+    static Structure* structureForTarget(JSGlobalObject*, JSValue target);
+
+    static String toStringName(const JSObject*, ExecState*);
+    static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
+    static bool getOwnPropertySlotByIndex(JSObject*, ExecState*, unsigned propertyName, PropertySlot&);
+    static CallType getCallData(JSCell*, CallData&);
+    static ConstructType getConstructData(JSCell*, ConstructData&);
+    static bool deleteProperty(JSCell*, ExecState*, PropertyName);
+    static bool deletePropertyByIndex(JSCell*, ExecState*, unsigned propertyName);
+    static bool preventExtensions(JSObject*, ExecState*);
+    static bool isExtensible(JSObject*, ExecState*);
+    static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
+    static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
+    static void getPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
+    static NO_RETURN_DUE_TO_CRASH void getOwnNonIndexPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
+    static NO_RETURN_DUE_TO_CRASH void getStructurePropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
+    static NO_RETURN_DUE_TO_CRASH void getGenericPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
+    static bool setPrototype(JSObject*, ExecState*, JSValue prototype, bool shouldThrowIfCantSet);
+    static JSValue getPrototype(JSObject*, ExecState*);
+    static void visitChildren(JSCell*, SlotVisitor&);
+
+    bool getOwnPropertySlotCommon(ExecState*, PropertyName, PropertySlot&);
+    bool performInternalMethodGetOwnProperty(ExecState*, PropertyName, PropertySlot&);
+    bool performGet(ExecState*, PropertyName, PropertySlot&);
+    bool performHasProperty(ExecState*, PropertyName, PropertySlot&);
+    template <typename DefaultDeleteFunction>
+    bool performDelete(ExecState*, PropertyName, DefaultDeleteFunction);
+    template <typename PerformDefaultPutFunction>
+    bool performPut(ExecState*, JSValue putValue, JSValue thisValue, PropertyName, PerformDefaultPutFunction);
+    bool performPreventExtensions(ExecState*);
+    bool performIsExtensible(ExecState*);
+    bool performDefineOwnProperty(ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
+    void performGetOwnPropertyNames(ExecState*, PropertyNameArray&, EnumerationMode);
+    bool performSetPrototype(ExecState*, JSValue prototype, bool shouldThrowIfCantSet);
+
+    WriteBarrier<JSObject> m_target;
+    WriteBarrier<Unknown> m_handler;
+    bool m_isCallable : 1;
+    bool m_isConstructible : 1;
+};
+
+} // namespace JSC