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JSCallbackObject.h
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225 lines (179 loc) · 8.34 KB
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/*
* Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2007 Eric Seidel <[email protected]>
*
* 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 COMPUTER, INC. ``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 COMPUTER, INC. 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 JSCallbackObject_h
#define JSCallbackObject_h
#include "JSObjectRef.h"
#include "JSValueRef.h"
#include "JSObject.h"
#include <wtf/PassOwnPtr.h>
namespace JSC {
struct JSCallbackObjectData : WeakHandleOwner {
JSCallbackObjectData(void* privateData, JSClassRef jsClass)
: privateData(privateData)
, jsClass(jsClass)
{
JSClassRetain(jsClass);
}
virtual ~JSCallbackObjectData()
{
JSClassRelease(jsClass);
}
JSValue getPrivateProperty(const Identifier& propertyName) const
{
if (!m_privateProperties)
return JSValue();
return m_privateProperties->getPrivateProperty(propertyName);
}
void setPrivateProperty(VM& vm, JSCell* owner, const Identifier& propertyName, JSValue value)
{
if (!m_privateProperties)
m_privateProperties = adoptPtr(new JSPrivatePropertyMap);
m_privateProperties->setPrivateProperty(vm, owner, propertyName, value);
}
void deletePrivateProperty(const Identifier& propertyName)
{
if (!m_privateProperties)
return;
m_privateProperties->deletePrivateProperty(propertyName);
}
void visitChildren(SlotVisitor& visitor)
{
if (!m_privateProperties)
return;
m_privateProperties->visitChildren(visitor);
}
void* privateData;
JSClassRef jsClass;
struct JSPrivatePropertyMap {
JSValue getPrivateProperty(const Identifier& propertyName) const
{
PrivatePropertyMap::const_iterator location = m_propertyMap.find(propertyName.impl());
if (location == m_propertyMap.end())
return JSValue();
return location->value.get();
}
void setPrivateProperty(VM& vm, JSCell* owner, const Identifier& propertyName, JSValue value)
{
WriteBarrier<Unknown> empty;
m_propertyMap.add(propertyName.impl(), empty).iterator->value.set(vm, owner, value);
}
void deletePrivateProperty(const Identifier& propertyName)
{
m_propertyMap.remove(propertyName.impl());
}
void visitChildren(SlotVisitor& visitor)
{
for (PrivatePropertyMap::iterator ptr = m_propertyMap.begin(); ptr != m_propertyMap.end(); ++ptr) {
if (ptr->value)
visitor.append(&ptr->value);
}
}
private:
typedef HashMap<RefPtr<StringImpl>, WriteBarrier<Unknown>, IdentifierRepHash> PrivatePropertyMap;
PrivatePropertyMap m_propertyMap;
};
OwnPtr<JSPrivatePropertyMap> m_privateProperties;
virtual void finalize(Handle<Unknown>, void*) OVERRIDE;
};
template <class Parent>
class JSCallbackObject : public Parent {
protected:
JSCallbackObject(ExecState*, Structure*, JSClassRef, void* data);
JSCallbackObject(VM&, JSClassRef, Structure*);
void finishCreation(ExecState*);
void finishCreation(VM&);
public:
typedef Parent Base;
static JSCallbackObject* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, JSClassRef classRef, void* data)
{
ASSERT_UNUSED(globalObject, !structure->globalObject() || structure->globalObject() == globalObject);
JSCallbackObject* callbackObject = new (NotNull, allocateCell<JSCallbackObject>(*exec->heap())) JSCallbackObject(exec, structure, classRef, data);
callbackObject->finishCreation(exec);
return callbackObject;
}
static JSCallbackObject<Parent>* create(VM&, JSClassRef, Structure*);
static const bool needsDestruction;
static void destroy(JSCell* cell)
{
static_cast<JSCallbackObject*>(cell)->JSCallbackObject::~JSCallbackObject();
}
void setPrivate(void* data);
void* getPrivate();
DECLARE_INFO;
JSClassRef classRef() const { return m_callbackObjectData->jsClass; }
bool inherits(JSClassRef) const;
static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
JSValue getPrivateProperty(const Identifier& propertyName) const
{
return m_callbackObjectData->getPrivateProperty(propertyName);
}
void setPrivateProperty(VM& vm, const Identifier& propertyName, JSValue value)
{
m_callbackObjectData->setPrivateProperty(vm, this, propertyName, value);
}
void deletePrivateProperty(const Identifier& propertyName)
{
m_callbackObjectData->deletePrivateProperty(propertyName);
}
using Parent::methodTable;
protected:
static const unsigned StructureFlags = ProhibitsPropertyCaching | OverridesGetOwnPropertySlot | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero | ImplementsHasInstance | OverridesHasInstance | OverridesVisitChildren | OverridesGetPropertyNames | Parent::StructureFlags;
private:
static String className(const JSObject*);
static JSValue defaultValue(const JSObject*, ExecState*, PreferredPrimitiveType);
static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
static bool getOwnPropertySlotByIndex(JSObject*, ExecState*, unsigned propertyName, PropertySlot&);
static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
static void putByIndex(JSCell*, ExecState*, unsigned, JSValue, bool shouldThrow);
static bool deleteProperty(JSCell*, ExecState*, PropertyName);
static bool deletePropertyByIndex(JSCell*, ExecState*, unsigned);
static bool customHasInstance(JSObject*, ExecState*, JSValue);
static void getOwnNonIndexPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
static ConstructType getConstructData(JSCell*, ConstructData&);
static CallType getCallData(JSCell*, CallData&);
static void visitChildren(JSCell* cell, SlotVisitor& visitor)
{
JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
ASSERT_GC_OBJECT_INHERITS((static_cast<Parent*>(thisObject)), JSCallbackObject<Parent>::info());
COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
ASSERT(thisObject->Parent::structure()->typeInfo().overridesVisitChildren());
Parent::visitChildren(thisObject, visitor);
thisObject->m_callbackObjectData->visitChildren(visitor);
}
void init(ExecState*);
static JSCallbackObject* asCallbackObject(JSValue);
static JSCallbackObject* asCallbackObject(EncodedJSValue);
static EncodedJSValue JSC_HOST_CALL call(ExecState*);
static EncodedJSValue JSC_HOST_CALL construct(ExecState*);
JSValue getStaticValue(ExecState*, PropertyName);
static EncodedJSValue staticFunctionGetter(ExecState*, EncodedJSValue, EncodedJSValue, PropertyName);
static EncodedJSValue callbackGetter(ExecState*, EncodedJSValue, EncodedJSValue, PropertyName);
OwnPtr<JSCallbackObjectData> m_callbackObjectData;
};
} // namespace JSC
// include the actual template class implementation
#include "JSCallbackObjectFunctions.h"
#endif // JSCallbackObject_h