зеркало из https://github.com/mozilla/gecko-dev.git
53 строки
1.7 KiB
C++
53 строки
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape 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/NPL/
|
|
*
|
|
* 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 mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
#ifndef _FAST_HASH_TABLE_H_
|
|
#define _FAST_HASH_TABLE_H_
|
|
|
|
#include "HashTable.h"
|
|
|
|
/* A faster version of class Hashtable, which makes the assumption that
|
|
* all keys are interned somewhere, ie., that there is only one copy
|
|
* of each unique string in the universe.
|
|
*/
|
|
|
|
/* Operations on HashTable keys, when keys are interned strings */
|
|
struct InternedStringKeyOps {
|
|
static bool equals(const char * userKey, const char * hashTableKey) {
|
|
return (userKey == hashTableKey);
|
|
}
|
|
|
|
static char *copyKey(Pool &/*pool*/, const char * userKey) {
|
|
return const_cast<char *>(userKey);
|
|
}
|
|
|
|
static Uint32 hashCode(const char * userKey) {
|
|
return reinterpret_cast<Uint32>(userKey);
|
|
}
|
|
};
|
|
|
|
template <class N> class FastHashTable : public HashTable<N, const char *, InternedStringKeyOps> {
|
|
public:
|
|
FastHashTable(Pool &p) : HashTable<N, const char *, InternedStringKeyOps>(p) { }
|
|
};
|
|
|
|
#endif /* _FAST_HASH_TABLE_H_ */
|