bindings: Introduces type-check for the internal pointers.

Source/bindings/core/v8/V8DOMWrapper.h

 /*
  * Copyright (C) 2009 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
@@ skipping 21 matching lines @@
 #define V8DOMWrapper_h
 
 #include "bindings/core/v8/DOMDataStore.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RawPtr.h"
 #include "wtf/text/AtomicString.h"
 #include <v8.h>
 
 namespace blink {
 
+class ScriptWrappableBase;
 struct WrapperTypeInfo;
 
 class V8DOMWrapper {
 public:
-    static v8::Local<v8::Object> createWrapper(v8::Handle<v8::Object> creationContext, const WrapperTypeInfo*, void*, v8::Isolate*);
+    static v8::Local<v8::Object> createWrapper(v8::Handle<v8::Object> creationContext, const WrapperTypeInfo*, ScriptWrappableBase* internalPointer, v8::Isolate*);
 
     template<typename V8T, typename T>
     static inline v8::Handle<v8::Object> associateObjectWithWrapper(PassRefPtr<T>, const WrapperTypeInfo*, v8::Handle<v8::Object>, v8::Isolate*, WrapperConfiguration::Lifetime);
     template<typename V8T, typename T>
     static inline v8::Handle<v8::Object> associateObjectWithWrapper(RawPtr<T> object, const WrapperTypeInfo* wrapperTypeInfo, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, WrapperConfiguration::Lifetime lifetime)
     {
         return associateObjectWithWrapper<V8T, T>(object.get(), wrapperTypeInfo, wrapper, isolate, lifetime);
     }
     template<typename V8T, typename T>
     static inline v8::Handle<v8::Object> associateObjectWithWrapper(T*, const WrapperTypeInfo*, v8::Handle<v8::Object>, v8::Isolate*, WrapperConfiguration::Lifetime);
-    static inline void setNativeInfo(v8::Handle<v8::Object>, const WrapperTypeInfo*, void*);
-    static inline void setNativeInfoForHiddenWrapper(v8::Handle<v8::Object>, const WrapperTypeInfo*, void*);
-    static inline void setNativeInfoWithPersistentHandle(v8::Handle<v8::Object>, const WrapperTypeInfo*, void*, PersistentNode*);
+    static inline void setNativeInfo(v8::Handle<v8::Object>, const WrapperTypeInfo*, ScriptWrappableBase* internalPointer);
+    static inline void setNativeInfoForHiddenWrapper(v8::Handle<v8::Object>, const WrapperTypeInfo*, ScriptWrappableBase* internalPointer);
+    static inline void setNativeInfoWithPersistentHandle(v8::Handle<v8::Object>, const WrapperTypeInfo*, ScriptWrappableBase* internalPointer, PersistentNode*);
     static inline void clearNativeInfo(v8::Handle<v8::Object>, const WrapperTypeInfo*);
 
     static bool isDOMWrapper(v8::Handle<v8::Value>);
 };
 
-inline void V8DOMWrapper::setNativeInfo(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* wrapperTypeInfo, void* object)
+inline void V8DOMWrapper::setNativeInfo(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* wrapperTypeInfo, ScriptWrappableBase* internalPointer)
 {
     ASSERT(wrapper->InternalFieldCount() >= 2);
-    ASSERT(object);
+    ASSERT(internalPointer);
     ASSERT(wrapperTypeInfo);
 #if ENABLE(OILPAN)
     ASSERT(wrapperTypeInfo->gcType == RefCountedObject);
 #else
     ASSERT(wrapperTypeInfo->gcType == RefCountedObject || wrapperTypeInfo->gcType == WillBeGarbageCollectedObject);
 #endif
-    wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, object);
+    wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, internalPointer);
     wrapper->SetAlignedPointerInInternalField(v8DOMWrapperTypeIndex, const_cast<WrapperTypeInfo*>(wrapperTypeInfo));
 }
 
-inline void V8DOMWrapper::setNativeInfoForHiddenWrapper(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* wrapperTypeInfo, void* object)
+inline void V8DOMWrapper::setNativeInfoForHiddenWrapper(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* wrapperTypeInfo, ScriptWrappableBase* internalPointer)
 {
     // see V8WindowShell::installDOMWindow() comment for why this version is needed and safe.
     ASSERT(wrapper->InternalFieldCount() >= 2);
-    ASSERT(object);
+    ASSERT(internalPointer);
     ASSERT(wrapperTypeInfo);
 #if ENABLE(OILPAN)
     ASSERT(wrapperTypeInfo->gcType != RefCountedObject);
 #else
     ASSERT(wrapperTypeInfo->gcType == RefCountedObject || wrapperTypeInfo->gcType == WillBeGarbageCollectedObject);
 #endif
 
     // Clear out the last internal field, which is assumed to contain a valid persistent pointer value.
     if (wrapperTypeInfo->gcType == GarbageCollectedObject) {
         wrapper->SetAlignedPointerInInternalField(wrapper->InternalFieldCount() - 1, 0);
     } else if (wrapperTypeInfo->gcType == WillBeGarbageCollectedObject) {
 #if ENABLE(OILPAN)
         wrapper->SetAlignedPointerInInternalField(wrapper->InternalFieldCount() - 1, 0);
 #endif
     }
-    wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, object);
+    wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, internalPointer);
     wrapper->SetAlignedPointerInInternalField(v8DOMWrapperTypeIndex, const_cast<WrapperTypeInfo*>(wrapperTypeInfo));
 }
 
-inline void V8DOMWrapper::setNativeInfoWithPersistentHandle(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* wrapperTypeInfo, void* object, PersistentNode* handle)
+inline void V8DOMWrapper::setNativeInfoWithPersistentHandle(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* wrapperTypeInfo, ScriptWrappableBase* internalPointer, PersistentNode* handle)
 {
     ASSERT(wrapper->InternalFieldCount() >= 3);
-    ASSERT(object);
+    ASSERT(internalPointer);
     ASSERT(wrapperTypeInfo);
     ASSERT(wrapperTypeInfo->gcType != RefCountedObject);
-    wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, object);
+    wrapper->SetAlignedPointerInInternalField(v8DOMWrapperObjectIndex, internalPointer);
     wrapper->SetAlignedPointerInInternalField(v8DOMWrapperTypeIndex, const_cast<WrapperTypeInfo*>(wrapperTypeInfo));
     // Persistent handle is stored in the last internal field.
     wrapper->SetAlignedPointerInInternalField(wrapper->InternalFieldCount() - 1, handle);
 }
 
 inline void V8DOMWrapper::clearNativeInfo(v8::Handle<v8::Object> wrapper, const WrapperTypeInfo* wrapperTypeInfo)
 {
     ASSERT(wrapper->InternalFieldCount() >= 2);
     ASSERT(wrapperTypeInfo);
     // clearNativeInfo() is used only by NP objects, which are not garbage collected.
@@ skipping 52 matching lines @@
     v8::Handle<v8::Context> context() const { return m_context; }
 
 private:
     bool m_didEnterContext;
     v8::Handle<v8::Context> m_context;
 };
 
 } // namespace blink
 
 #endif // V8DOMWrapper_h