| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed 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. |
| */ |
| |
| // Class header file... |
| #include "XalanDOMStringPool.hpp" |
| |
| |
| |
| XALAN_CPP_NAMESPACE_BEGIN |
| |
| |
| |
| const XalanDOMString XalanDOMStringPool::s_emptyString; |
| |
| |
| |
| XalanDOMStringPool::XalanDOMStringPool( |
| block_size_type theBlockSize, |
| bucket_count_type theBucketCount, |
| bucket_size_type theBucketSize) : |
| m_stringAllocator(theBlockSize), |
| m_stringCount(0), |
| m_hashTable(theBucketCount, theBucketSize) |
| { |
| } |
| |
| |
| |
| XalanDOMStringPool::~XalanDOMStringPool() |
| { |
| } |
| |
| |
| |
| void |
| XalanDOMStringPool::clear() |
| { |
| m_stringAllocator.reset(); |
| |
| m_hashTable.clear(); |
| |
| m_stringCount = 0; |
| } |
| |
| |
| |
| size_t |
| XalanDOMStringPool::size() const |
| { |
| assert(m_stringCount == m_hashTable.size()); |
| |
| return m_stringCount; |
| } |
| |
| |
| |
| const XalanDOMString& |
| XalanDOMStringPool::get(const XalanDOMString& theString) |
| { |
| return get(toCharArray(theString), length(theString)); |
| } |
| |
| |
| |
| const XalanDOMString& |
| XalanDOMStringPool::get( |
| const XalanDOMChar* theString, |
| XalanDOMString::size_type theLength) |
| { |
| assert(m_stringCount == m_hashTable.size()); |
| |
| if (theString == 0 || *theString == 0) |
| { |
| return s_emptyString; |
| } |
| else |
| { |
| const XalanDOMString::size_type theActualLength = theLength == XalanDOMString::npos ? length(theString) : theLength; |
| |
| size_t theBucketIndex; |
| |
| const XalanDOMString* theTableString = m_hashTable.find(theString, theActualLength, &theBucketIndex); |
| |
| if (theTableString != 0) |
| { |
| return *theTableString; |
| } |
| else |
| { |
| // Not found, so insert the string... |
| XalanDOMString* const theNewString = |
| m_stringAllocator.create(theString, theActualLength); |
| assert(theNewString != 0); |
| |
| assert(theActualLength == length(*theNewString)); |
| |
| ++m_stringCount; |
| |
| // Insert the string into the hash table... |
| m_hashTable.insert(*theNewString, theBucketIndex); |
| |
| assert(m_stringCount == m_hashTable.size()); |
| |
| return *theNewString; |
| } |
| } |
| } |
| |
| |
| |
| XALAN_CPP_NAMESPACE_END |