mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-07-08 02:10:14 +02:00
122 lines
3.3 KiB
C++
122 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is C++ hashtable templates.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Benjamin Smedberg.
|
|
* Portions created by the Initial Developer are Copyright (C) 2002
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "nsTHashtable.h"
|
|
#include "nsHashKeys.h"
|
|
|
|
PRUint32
|
|
HashString( const nsAString& aStr )
|
|
{
|
|
PRUint32 code = 0;
|
|
|
|
#ifdef MOZILLA_INTERNAL_API
|
|
nsAString::const_iterator begin, end;
|
|
aStr.BeginReading(begin);
|
|
aStr.EndReading(end);
|
|
#else
|
|
const PRUnichar *begin, *end;
|
|
PRUint32 len = NS_StringGetData(aStr, &begin);
|
|
end = begin + len;
|
|
#endif
|
|
|
|
while (begin != end) {
|
|
code = (code>>28) ^ (code<<4) ^ PRUint32(*begin);
|
|
++begin;
|
|
}
|
|
|
|
return code;
|
|
}
|
|
|
|
PRUint32
|
|
HashString( const nsACString& aStr )
|
|
{
|
|
PRUint32 code = 0;
|
|
|
|
#ifdef MOZILLA_INTERNAL_API
|
|
nsACString::const_iterator begin, end;
|
|
aStr.BeginReading(begin);
|
|
aStr.EndReading(end);
|
|
#else
|
|
const char *begin, *end;
|
|
PRUint32 len = NS_CStringGetData(aStr, &begin);
|
|
end = begin + len;
|
|
#endif
|
|
|
|
while (begin != end) {
|
|
code = (code>>28) ^ (code<<4) ^ PRUint32(*begin);
|
|
++begin;
|
|
}
|
|
|
|
return code;
|
|
}
|
|
|
|
PRUint32
|
|
HashCString(const char *str)
|
|
{
|
|
PRUint32 code = 0;
|
|
|
|
while (*str) {
|
|
code = (code>>28) ^ (code<<4) ^ PRUint32(*str);
|
|
++str;
|
|
}
|
|
|
|
return code;
|
|
}
|
|
|
|
PR_IMPLEMENT(PLDHashOperator)
|
|
PL_DHashStubEnumRemove(PLDHashTable *table,
|
|
PLDHashEntryHdr *entry,
|
|
PRUint32 ordinal,
|
|
void *userarg)
|
|
{
|
|
return PL_DHASH_REMOVE;
|
|
}
|
|
|
|
PRUint32 nsIDHashKey::HashKey(const nsID* id)
|
|
{
|
|
PRUint32 h = id->m0;
|
|
PRUint32 i;
|
|
|
|
h = (h>>28) ^ (h<<4) ^ id->m1;
|
|
h = (h>>28) ^ (h<<4) ^ id->m2;
|
|
|
|
for (i = 0; i < 8; i++)
|
|
h = (h>>28) ^ (h<<4) ^ id->m3[i];
|
|
|
|
return h;
|
|
}
|