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-rw-r--r--WebCore/loader/CachedResourceHandle.h92
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diff --git a/WebCore/loader/CachedResourceHandle.h b/WebCore/loader/CachedResourceHandle.h
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--- a/WebCore/loader/CachedResourceHandle.h
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-/*
- * Copyright (C) 2008 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. ``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
- * 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 CachedResourceHandle_h
-#define CachedResourceHandle_h
-
-#include "CachedResource.h"
-
-namespace WebCore {
-
- class CachedResourceHandleBase {
- public:
- ~CachedResourceHandleBase() { if (m_resource) m_resource->unregisterHandle(this); }
- CachedResource* get() const { return m_resource; }
-
- bool operator!() const { return !m_resource; }
-
- // This conversion operator allows implicit conversion to bool but not to other integer types.
- typedef CachedResource* CachedResourceHandleBase::*UnspecifiedBoolType;
- operator UnspecifiedBoolType() const { return m_resource ? &CachedResourceHandleBase::m_resource : 0; }
-
- protected:
- CachedResourceHandleBase() : m_resource(0) {}
- CachedResourceHandleBase(CachedResource* res) { m_resource = res; if (m_resource) m_resource->registerHandle(this); }
- CachedResourceHandleBase(const CachedResourceHandleBase& o) : m_resource(o.m_resource) { if (m_resource) m_resource->registerHandle(this); }
-
- void setResource(CachedResource*);
-
- private:
- CachedResourceHandleBase& operator=(const CachedResourceHandleBase&) { return *this; }
-
- friend class CachedResource;
-
- CachedResource* m_resource;
- };
-
- template <class R> class CachedResourceHandle : public CachedResourceHandleBase {
- public:
- CachedResourceHandle() { }
- CachedResourceHandle(R* res) : CachedResourceHandleBase(res) { }
- CachedResourceHandle(const CachedResourceHandle<R>& o) : CachedResourceHandleBase(o) { }
-
- R* get() const { return reinterpret_cast<R*>(CachedResourceHandleBase::get()); }
- R* operator->() const { return get(); }
-
- CachedResourceHandle& operator=(R* res) { setResource(res); return *this; }
- CachedResourceHandle& operator=(const CachedResourceHandle& o) { setResource(o.get()); return *this; }
- bool operator==(const CachedResourceHandleBase& o) const { return get() == o.get(); }
- bool operator!=(const CachedResourceHandleBase& o) const { return get() != o.get(); }
- };
-
- template <class R, class RR> bool operator==(const CachedResourceHandle<R>& h, const RR* res)
- {
- return h.get() == res;
- }
- template <class R, class RR> bool operator==(const RR* res, const CachedResourceHandle<R>& h)
- {
- return h.get() == res;
- }
- template <class R, class RR> bool operator!=(const CachedResourceHandle<R>& h, const RR* res)
- {
- return h.get() != res;
- }
- template <class R, class RR> bool operator!=(const RR* res, const CachedResourceHandle<R>& h)
- {
- return h.get() != res;
- }
-}
-
-#endif