96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership.
|
|
* The ASF licenses this file to You under the Apache License, Version 2.0
|
|
* (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.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
* $Id: Hashers.hpp 679382 2008-07-24 12:09:39Z amassari $
|
|
*/
|
|
|
|
#if !defined(XERCESC_INCLUDE_GUARD_HASHERS_HPP)
|
|
#define XERCESC_INCLUDE_GUARD_HASHERS_HPP
|
|
|
|
#include <xercesc/util/XMLString.hpp>
|
|
|
|
XERCES_CPP_NAMESPACE_BEGIN
|
|
|
|
//
|
|
// Common hashers. Only widely-used hashers should be placed here.
|
|
//
|
|
|
|
/**
|
|
* Hasher for keys that are const XMLCh*.
|
|
*/
|
|
struct StringHasher
|
|
{
|
|
/**
|
|
* Returns a hash value based on the key
|
|
*
|
|
* @param key the key to be hashed
|
|
* @param mod the modulus the hasher should use
|
|
*/
|
|
XMLSize_t getHashVal(const void* key, XMLSize_t mod) const
|
|
{
|
|
return XMLString::hash ((const XMLCh*)key, mod);
|
|
}
|
|
|
|
/**
|
|
* Compares two keys and determines if they are semantically equal
|
|
*
|
|
* @param key1 the first key to be compared
|
|
* @param key2 the second key to be compared
|
|
*
|
|
* @return true if they are equal
|
|
*/
|
|
bool equals(const void *const key1, const void *const key2) const
|
|
{
|
|
return XMLString::equals ((const XMLCh*)key1, (const XMLCh*)key2);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Hasher for keys that are pointers.
|
|
*/
|
|
struct PtrHasher
|
|
{
|
|
/**
|
|
* Returns a hash value based on the key
|
|
*
|
|
* @param key the key to be hashed
|
|
* @param mod the modulus the hasher should use
|
|
*/
|
|
XMLSize_t getHashVal(const void* key, XMLSize_t mod) const
|
|
{
|
|
return ((XMLSize_t)key) % mod;
|
|
}
|
|
|
|
/**
|
|
* Compares two keys and determines if they are semantically equal
|
|
*
|
|
* @param key1 the first key to be compared
|
|
* @param key2 the second key to be compared
|
|
*
|
|
* @return true if they are equal
|
|
*/
|
|
bool equals(const void *const key1, const void *const key2) const
|
|
{
|
|
return key1 == key2;
|
|
}
|
|
};
|
|
|
|
XERCES_CPP_NAMESPACE_END
|
|
|
|
#endif
|