| /* |
| * 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. |
| */ |
| |
| /* |
| * $Id$ |
| */ |
| |
| #if !defined(XERCESC_INCLUDE_GUARD_HASHERS_HPP) |
| #define XERCESC_INCLUDE_GUARD_HASHERS_HPP |
| |
| #include <xercesc/util/XMLString.hpp> |
| |
| namespace XERCES_CPP_NAMESPACE { |
| |
| // |
| // 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; |
| } |
| }; |
| |
| } |
| |
| #endif |