Moved files under Source/bindings/v8 to Source/bindings/core/v8.

Source/bindings/v8/ScriptWrappable.h

Index: Source/bindings/v8/ScriptWrappable.h
diff --git a/Source/bindings/v8/ScriptWrappable.h b/Source/bindings/v8/ScriptWrappable.h
deleted file mode 100644
index c81fda0e6e1b810a215a8b58db20d11862722bbb..0000000000000000000000000000000000000000
--- a/Source/bindings/v8/ScriptWrappable.h
+++ /dev/null
@@ -1,269 +0,0 @@
-/*
- * Copyright (C) 2010 Google 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:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * 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.
- *     * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
- * OWNER OR 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 ScriptWrappable_h
-#define ScriptWrappable_h
-
-#include "bindings/v8/WrapperTypeInfo.h"
-#include "platform/heap/Handle.h"
-#include <v8.h>
-
-// Helper to call webCoreInitializeScriptWrappableForInterface in the global namespace.
-template <class C> inline void initializeScriptWrappableHelper(C* object)
-{
-    void webCoreInitializeScriptWrappableForInterface(C*);
-    webCoreInitializeScriptWrappableForInterface(object);
-}
-
-namespace WebCore {
-
-/**
- * ScriptWrappable wraps a V8 object and its WrapperTypeInfo.
- *
- * ScriptWrappable acts much like a v8::Persistent<> in that it keeps a
- * V8 object alive. Under the hood, however, it keeps either a TypeInfo
- * object or an actual v8 persistent (or is empty).
- *
- * The physical state space of ScriptWrappable is:
- * - uintptr_t m_wrapperOrTypeInfo;
- *   - if 0: the ScriptWrappable is uninitialized/empty.
- *   - if even: a pointer to WebCore::TypeInfo
- *   - if odd: a pointer to v8::Persistent<v8::Object> + 1.
- *
- * In other words, one integer represents one of two object pointers,
- * depending on its least signficiant bit, plus an uninitialized state.
- * This class is meant to mask the logistics behind this.
- *
- * typeInfo() and newLocalWrapper will return appropriate values (possibly
- * 0/empty) in all physical states.
- *
- *  The state transitions are:
- *  - new: an empty and invalid ScriptWrappable.
- *  - init (to be called by all subclasses in their constructor):
- *        needs to call setTypeInfo
- *  - setTypeInfo: install a WrapperTypeInfo
- *  - setWrapper: install a v8::Persistent (or empty)
- *  - disposeWrapper (via setWeakCallback, triggered by V8 garbage collecter):
- *        remove v8::Persistent and install a TypeInfo of the previous value.
- */
-class ScriptWrappable {
-public:
-    ScriptWrappable() : m_wrapperOrTypeInfo(0) { }
-
-    // Wrappables need to be initialized with their most derrived type for which
-    // bindings exist, in much the same way that certain other types need to be
-    // adopted and so forth. The overloaded initializeScriptWrappableForInterface()
-    // functions are implemented by the generated V8 bindings code. Declaring the
-    // extern function in the template avoids making a centralized header of all
-    // the bindings in the universe. C++11's extern template feature may provide
-    // a cleaner solution someday.
-    template <class C> static void init(C* object)
-    {
-        initializeScriptWrappableHelper(object);
-    }
-
-    void setWrapper(v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperConfiguration& configuration)
-    {
-        ASSERT(!containsWrapper());
-        if (!*wrapper) {
-            m_wrapperOrTypeInfo = 0;
-            return;
-        }
-        v8::Persistent<v8::Object> persistent(isolate, wrapper);
-        configuration.configureWrapper(&persistent);
-        persistent.SetWeak(this, &setWeakCallback);
-        m_wrapperOrTypeInfo = reinterpret_cast<uintptr_t>(persistent.ClearAndLeak()) | 1;
-        ASSERT(containsWrapper());
-    }
-
-    v8::Local<v8::Object> newLocalWrapper(v8::Isolate* isolate) const
-    {
-        v8::Persistent<v8::Object> persistent;
-        getPersistent(&persistent);
-        return v8::Local<v8::Object>::New(isolate, persistent);
-    }
-
-    const WrapperTypeInfo* typeInfo()
-    {
-        if (containsTypeInfo())
-            return reinterpret_cast<const WrapperTypeInfo*>(m_wrapperOrTypeInfo);
-
-        if (containsWrapper()) {
-            v8::Persistent<v8::Object> persistent;
-            getPersistent(&persistent);
-            return toWrapperTypeInfo(persistent);
-        }
-
-        return 0;
-    }
-
-    void setTypeInfo(const WrapperTypeInfo* typeInfo)
-    {
-        m_wrapperOrTypeInfo = reinterpret_cast<uintptr_t>(typeInfo);
-        ASSERT(containsTypeInfo());
-    }
-
-    bool isEqualTo(const v8::Local<v8::Object>& other) const
-    {
-        v8::Persistent<v8::Object> persistent;
-        getPersistent(&persistent);
-        return persistent == other;
-    }
-
-    static bool wrapperCanBeStoredInObject(const void*) { return false; }
-    static bool wrapperCanBeStoredInObject(const ScriptWrappable*) { return true; }
-
-    static ScriptWrappable* fromObject(const void*)
-    {
-        ASSERT_NOT_REACHED();
-        return 0;
-    }
-
-    static ScriptWrappable* fromObject(ScriptWrappable* object)
-    {
-        return object;
-    }
-
-    bool setReturnValue(v8::ReturnValue<v8::Value> returnValue)
-    {
-        v8::Persistent<v8::Object> persistent;
-        getPersistent(&persistent);
-        returnValue.Set(persistent);
-        return containsWrapper();
-    }
-
-    void markAsDependentGroup(ScriptWrappable* groupRoot, v8::Isolate* isolate)
-    {
-        ASSERT(containsWrapper());
-        ASSERT(groupRoot && groupRoot->containsWrapper());
-
-        v8::UniqueId groupId(groupRoot->m_wrapperOrTypeInfo);
-        v8::Persistent<v8::Object> wrapper;
-        getPersistent(&wrapper);
-        wrapper.MarkPartiallyDependent();
-        isolate->SetObjectGroupId(v8::Persistent<v8::Value>::Cast(wrapper), groupId);
-    }
-
-    void setReference(const v8::Persistent<v8::Object>& parent, v8::Isolate* isolate)
-    {
-        v8::Persistent<v8::Object> persistent;
-        getPersistent(&persistent);
-        isolate->SetReference(parent, persistent);
-    }
-
-    template<typename V8T, typename T>
-    static void assertWrapperSanity(v8::Local<v8::Object> object, T* objectAsT)
-    {
-        ASSERT(objectAsT);
-        RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(object.IsEmpty()
-            || object->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex) == V8T::toInternalPointer(objectAsT));
-    }
-
-    template<typename V8T, typename T>
-    static void assertWrapperSanity(void* object, T* objectAsT)
-    {
-        ASSERT_NOT_REACHED();
-    }
-
-    template<typename V8T, typename T>
-    static void assertWrapperSanity(ScriptWrappable* object, T* objectAsT)
-    {
-        ASSERT(object);
-        ASSERT(objectAsT);
-        v8::Object* value = object->getRawValue();
-        RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(value == 0
-            || value->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex) == V8T::toInternalPointer(objectAsT));
-    }
-
-    inline bool containsWrapper() const { return (m_wrapperOrTypeInfo & 1); }
-    inline bool containsTypeInfo() const { return m_wrapperOrTypeInfo && !(m_wrapperOrTypeInfo & 1); }
-
-protected:
-    ~ScriptWrappable()
-    {
-        // We must not get deleted as long as we contain a wrapper. If this happens, we screwed up ref
-        // counting somewhere. Crash here instead of crashing during a later gc cycle.
-        RELEASE_ASSERT_WITH_SECURITY_IMPLICATION(!containsWrapper());
-        ASSERT(m_wrapperOrTypeInfo); // Assert initialization via init() even if not subsequently wrapped.
-        m_wrapperOrTypeInfo = 0; // Break UAF attempts to wrap.
-    }
-
-private:
-    void getPersistent(v8::Persistent<v8::Object>* persistent) const
-    {
-        ASSERT(persistent);
-
-        // Horrible and super unsafe: Cast the Persistent to an Object*, so
-        // that we can inject the wrapped value. This only works because
-        // we previously 'stole' the object pointer from a Persistent in
-        // the setWrapper() method.
-        *reinterpret_cast<v8::Object**>(persistent) = getRawValue();
-    }
-
-    inline v8::Object* getRawValue() const
-    {
-        v8::Object* object = containsWrapper() ? reinterpret_cast<v8::Object*>(m_wrapperOrTypeInfo & ~1) : 0;
-        return object;
-    }
-
-    inline void disposeWrapper(v8::Local<v8::Object> wrapper)
-    {
-        ASSERT(containsWrapper());
-
-        v8::Persistent<v8::Object> persistent;
-        getPersistent(&persistent);
-
-        ASSERT(wrapper == persistent);
-        persistent.Reset();
-        setTypeInfo(toWrapperTypeInfo(wrapper));
-    }
-
-    // If zero, then this contains nothing, otherwise:
-    //   If the bottom bit it set, then this contains a pointer to a wrapper object in the remainging bits.
-    //   If the bottom bit is clear, then this contains a pointer to the wrapper type info in the remaining bits.
-    uintptr_t m_wrapperOrTypeInfo;
-
-    static void setWeakCallback(const v8::WeakCallbackData<v8::Object, ScriptWrappable>& data)
-    {
-        v8::Persistent<v8::Object> persistent;
-        data.GetParameter()->getPersistent(&persistent);
-        ASSERT(persistent == data.GetValue());
-        data.GetParameter()->disposeWrapper(data.GetValue());
-
-        // FIXME: I noticed that 50%~ of minor GC cycle times can be consumed
-        // inside data.GetParameter()->deref(), which causes Node destructions. We should
-        // make Node destructions incremental.
-        releaseObject(data.GetValue());
-    }
-};
-
-} // namespace WebCore
-
-#endif // ScriptWrappable_h