// -*- mode: c++; c-basic-offset: 4 -*-

/*

 * Copyright (C) 2006 Apple Computer, 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 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 ResourceError_h

#define ResourceError_h

#include "PlatformString.h"

#if PLATFORM(CF)

#include <wtf/RetainPtr.h>

#endif

#ifdef __OBJC__

@class NSError;

#else

class NSError;

#endif

#if USE(CFNETWORK)

#include <CoreFoundation/CFStream.h>

#endif

namespace WebCore {

    class ResourceError {

    public:

        ResourceError()

            : m_errorCode(0)

#if PLATFORM(CF)

            , m_dataIsUpToDate(true)

#endif

            , m_isNull(true)

        {

        }

        ResourceError(const String& domain, int errorCode, const String& failingURL, const String& localizedDescription)

            : m_domain(domain)

            , m_errorCode(errorCode)

            , m_failingURL(failingURL)

            , m_localizedDescription(localizedDescription)

#if PLATFORM(CF)

            , m_dataIsUpToDate(true)

#endif

            , m_isNull(false)

        {

        }

#if PLATFORM(CF)

#if PLATFORM(MAC)

        ResourceError(NSError* error)

#else

        ResourceError(CFStreamError error);

        ResourceError(CFErrorRef error)

#endif

            : m_dataIsUpToDate(false)

            , m_platformError(error)

            , m_isNull(!error)

        {

        }

#endif

#if 0

        static const String CocoaErrorDomain;

        static const String POSIXDomain;

        static const String OSStatusDomain;

        static const String MachDomain;

        static const String WebKitDomain;

#endif

        bool isNull() const { return m_isNull; }

        const String& domain() const { unpackPlatformErrorIfNeeded(); return m_domain; }

        int errorCode() const { unpackPlatformErrorIfNeeded(); return m_errorCode; }

        const String& failingURL() const { unpackPlatformErrorIfNeeded(); return m_failingURL; }

        const String& localizedDescription() const { unpackPlatformErrorIfNeeded(); return m_localizedDescription; }

#if PLATFORM(CF)

#if PLATFORM(MAC)

        operator NSError*() const;

#else

        operator CFErrorRef() const;

        operator CFStreamError() const;

#endif

#endif

    private:

        void unpackPlatformErrorIfNeeded() const

        {

#if PLATFORM(CF)

            if (!m_dataIsUpToDate)

                const_cast<ResourceError*>(this)->unpackPlatformError();

#endif

        }

#if PLATFORM(CF)

        void unpackPlatformError();

#endif

        String m_domain;

        int m_errorCode;

        String m_failingURL;

        String m_localizedDescription;

#if PLATFORM(CF)

        bool m_dataIsUpToDate;

#endif

#if PLATFORM(MAC)

        mutable RetainPtr<NSError> m_platformError;

#elif PLATFORM(CF)

        mutable RetainPtr<CFErrorRef> m_platformError;

#endif

        bool m_isNull;

};

inline bool operator==(const ResourceError& a, const ResourceError& b)

{

    if (a.isNull() && b.isNull())

        return true;

    if (a.isNull() || b.isNull())

        return false;

    if (a.domain() != b.domain())

        return false;

    if (a.errorCode() != b.errorCode())

        return false;

    if (a.failingURL() != b.failingURL())

        return false;

    if (a.localizedDescription() != b.localizedDescription())

        return false;

#if PLATFORM(CF)

#if PLATFORM(MAC)

    if ((NSError *)a != (NSError *)b)

        return false;

#else

    if ((CFErrorRef)a != (CFErrorRef)b)

        return false;

#endif

#endif

    return true;

}

inline bool operator!=(const ResourceError& a, const ResourceError& b) { return !(a == b); }

} // namespace WebCore

#endif // ResourceError_h_