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lightning-sunbird  0.9+nobinonly
nsURIHashKey.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is Hashtable Keys.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Benjamin Smedberg <bsmedberg@covad.net>
00019  *
00020  * Portions created by the Initial Developer are Copyright (C) 2003
00021  * the Initial Developer. All Rights Reserved.
00022  *
00023  * Contributor(s):
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 #ifndef nsURIHashKey_h__
00039 #define nsURIHashKey_h__
00040 
00041 #include "pldhash.h"
00042 #include "nsCOMPtr.h"
00043 #include "nsCRT.h"
00044 #include "nsIURI.h"
00045 
00049 class nsURIHashKey : public PLDHashEntryHdr
00050 {
00051 public:
00052     typedef nsIURI* KeyType;
00053     typedef const nsIURI* KeyTypePointer;
00054 
00055     nsURIHashKey(const nsIURI* aKey) :
00056         mKey(NS_CONST_CAST(nsIURI*, aKey)) { MOZ_COUNT_CTOR(nsURIHashKey); }
00057     nsURIHashKey(const nsURIHashKey& toCopy) :
00058         mKey(toCopy.mKey) { MOZ_COUNT_CTOR(nsURIHashKey); }
00059     ~nsURIHashKey() { MOZ_COUNT_DTOR(nsURIHashKey); }
00060 
00061     nsIURI* GetKey() const { return mKey; }
00062     const nsIURI* GetKeyPointer() const { return mKey; }
00063 
00064     PRBool KeyEquals(const nsIURI* aKey) const {
00065         PRBool eq;
00066         if (NS_SUCCEEDED(mKey->Equals(NS_CONST_CAST(nsIURI*,aKey), &eq))) {
00067             return eq;
00068         }
00069         return PR_FALSE;
00070     }
00071 
00072     static const nsIURI* KeyToPointer(nsIURI* aKey) { return aKey; }
00073     static PLDHashNumber HashKey(const nsIURI* aKey) {
00074         nsCAutoString spec;
00075         NS_CONST_CAST(nsIURI*,aKey)->GetSpec(spec);
00076         return nsCRT::HashCode(spec.get());
00077     }
00078     
00079     enum { ALLOW_MEMMOVE = PR_TRUE };
00080 
00081 private:
00082     nsCOMPtr<nsIURI> mKey;
00083 };
00084 
00085 #endif // nsURIHashKey_h__