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      1 /*
      2  * Copyright (C) 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef SecurityOriginHash_h
     30 #define SecurityOriginHash_h
     31 
     32 #include "weborigin/SecurityOrigin.h"
     33 #include "weborigin/KURL.h"
     34 #include "wtf/RefPtr.h"
     35 
     36 namespace WebCore {
     37 
     38 struct SecurityOriginHash {
     39     static unsigned hash(SecurityOrigin* origin)
     40     {
     41         unsigned hashCodes[3] = {
     42             origin->protocol().impl() ? origin->protocol().impl()->hash() : 0,
     43             origin->host().impl() ? origin->host().impl()->hash() : 0,
     44             origin->port()
     45         };
     46         return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
     47     }
     48     static unsigned hash(const RefPtr<SecurityOrigin>& origin)
     49     {
     50         return hash(origin.get());
     51     }
     52 
     53     static bool equal(SecurityOrigin* a, SecurityOrigin* b)
     54     {
     55         // FIXME: The hash function above compares three specific fields.
     56         // This code to compare those three specific fields should be moved here from
     57         // SecurityOrigin as mentioned in origin/SecurityOrigin.h so we don't accidentally change
     58         // equal without changing hash to match it.
     59         if (!a || !b)
     60             return a == b;
     61         return a->equal(b);
     62     }
     63     static bool equal(SecurityOrigin* a, const RefPtr<SecurityOrigin>& b)
     64     {
     65         return equal(a, b.get());
     66     }
     67     static bool equal(const RefPtr<SecurityOrigin>& a, SecurityOrigin* b)
     68     {
     69         return equal(a.get(), b);
     70     }
     71     static bool equal(const RefPtr<SecurityOrigin>& a, const RefPtr<SecurityOrigin>& b)
     72     {
     73         return equal(a.get(), b.get());
     74     }
     75 
     76     static const bool safeToCompareToEmptyOrDeleted = false;
     77 };
     78 
     79 } // namespace WebCore
     80 
     81 namespace WTF {
     82     template<typename> struct DefaultHash;
     83 
     84     template<> struct DefaultHash<RefPtr<WebCore::SecurityOrigin> > {
     85         typedef WebCore::SecurityOriginHash Hash;
     86     };
     87 
     88 } // namespace WTF
     89 
     90 #endif // SecurityOriginHash_h
     91