JavaScriptCore-1218.tar.gz

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

diff --git a/runtime/JSProxy.cpp b/runtime/JSProxy.cpp
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+/*
+ * Copyright (C) 2011, 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.
+ *
+ * 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.
+ */
+
+#include "config.h"
+#include "JSProxy.h"
+
+#include "JSGlobalObject.h"
+#include "Operations.h"
+
+namespace JSC {
+
+ASSERT_HAS_TRIVIAL_DESTRUCTOR(JSProxy);
+
+const ClassInfo JSProxy::s_info = { "JSProxy", &Base::s_info, 0, 0, CREATE_METHOD_TABLE(JSProxy) };
+
+void JSProxy::visitChildren(JSCell* cell, SlotVisitor& visitor)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(cell);
+    ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
+
+    COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
+    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
+
+    Base::visitChildren(thisObject, visitor);
+    visitor.append(&thisObject->m_target);
+}
+
+void JSProxy::setTarget(VM& vm, JSGlobalObject* globalObject)
+{
+    ASSERT_ARG(globalObject, globalObject);
+    m_target.set(vm, this, globalObject);
+    setPrototype(vm, globalObject->prototype());
+
+    PrototypeMap& prototypeMap = vm.prototypeMap;
+    if (!prototypeMap.isPrototype(this))
+        return;
+
+    // This is slow but constant time. We think it's very rare for a proxy
+    // to be a prototype, and reasonably rare to retarget a proxy,
+    // so slow constant time is OK.
+    for (size_t i = 0; i <= JSFinalObject::maxInlineCapacity(); ++i)
+        prototypeMap.clearEmptyObjectStructureForPrototype(this, i);
+}
+
+String JSProxy::className(const JSObject* object)
+{
+    const JSProxy* thisObject = jsCast<const JSProxy*>(object);
+    return thisObject->target()->methodTable()->className(thisObject->target());
+}
+
+bool JSProxy::getOwnPropertySlot(JSCell* cell, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(cell);
+    return thisObject->target()->methodTable()->getOwnPropertySlot(thisObject->target(), exec, propertyName, slot);
+}
+
+bool JSProxy::getOwnPropertySlotByIndex(JSCell* cell, ExecState* exec, unsigned propertyName, PropertySlot& slot)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(cell);
+    return thisObject->target()->methodTable()->getOwnPropertySlotByIndex(thisObject->target(), exec, propertyName, slot);
+}
+
+bool JSProxy::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(object);
+    return thisObject->target()->methodTable()->getOwnPropertyDescriptor(thisObject->target(), exec, propertyName, descriptor);
+}
+
+void JSProxy::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(cell);
+    thisObject->target()->methodTable()->put(thisObject->target(), exec, propertyName, value, slot);
+}
+
+void JSProxy::putByIndex(JSCell* cell, ExecState* exec, unsigned propertyName, JSValue value, bool shouldThrow)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(cell);
+    thisObject->target()->methodTable()->putByIndex(thisObject->target(), exec, propertyName, value, shouldThrow);
+}
+
+void JSProxy::putDirectVirtual(JSObject* object, ExecState* exec, PropertyName propertyName, JSValue value, unsigned attributes)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(object);
+    thisObject->target()->putDirectVirtual(thisObject->target(), exec, propertyName, value, attributes);
+}
+
+bool JSProxy::defineOwnProperty(JSC::JSObject* object, JSC::ExecState* exec, JSC::PropertyName propertyName, JSC::PropertyDescriptor& descriptor, bool shouldThrow)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(object);
+    return thisObject->target()->methodTable()->defineOwnProperty(thisObject->target(), exec, propertyName, descriptor, shouldThrow);
+}
+
+bool JSProxy::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(cell);
+    return thisObject->target()->methodTable()->deleteProperty(thisObject->target(), exec, propertyName);
+}
+
+bool JSProxy::deletePropertyByIndex(JSCell* cell, ExecState* exec, unsigned propertyName)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(cell);
+    return thisObject->target()->methodTable()->deletePropertyByIndex(thisObject->target(), exec, propertyName);
+}
+
+void JSProxy::getPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(object);
+    thisObject->target()->methodTable()->getPropertyNames(thisObject->target(), exec, propertyNames, mode);
+}
+
+void JSProxy::getOwnPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
+{
+    JSProxy* thisObject = jsCast<JSProxy*>(object);
+    thisObject->target()->methodTable()->getOwnPropertyNames(thisObject->target(), exec, propertyNames, mode);
+}
+
+} // namespace JSC