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https://github.com/moses-smt/mosesdecoder.git
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118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/***********************************************************************
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Moses - statistical machine translation system
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Copyright (C) 2006-2012 University of Edinburgh
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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***********************************************************************/
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#pragma once
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#include "moses/NonTerminal.h"
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#include "moses/TargetPhrase.h"
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#include "moses/TargetPhraseCollection.h"
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#include "moses/Terminal.h"
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#include "moses/Util.h"
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#include "moses/Word.h"
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#include "Trie.h"
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#include <boost/functional/hash.hpp>
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#include <boost/unordered_map.hpp>
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#include <boost/version.hpp>
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#include <map>
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#include <vector>
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namespace Moses
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{
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class RuleTableUTrie;
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//! @todo ask phil williams - whats the diff between this and phrasedictionaryNode
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class UTrieNode
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{
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public:
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typedef std::vector<std::vector<Word> > LabelTable;
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#if defined(BOOST_VERSION) && (BOOST_VERSION >= 104200)
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typedef boost::unordered_map<Word,
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UTrieNode,
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TerminalHasher,
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TerminalEqualityPred> TerminalMap;
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typedef boost::unordered_map<std::vector<int>,
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TargetPhraseCollection> LabelMap;
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#else
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typedef std::map<Word, UTrieNode> TerminalMap;
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typedef std::map<std::vector<int>, TargetPhraseCollection> LabelMap;
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#endif
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~UTrieNode() {
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delete m_gapNode;
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}
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const LabelTable &GetLabelTable() const {
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return m_labelTable;
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}
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const LabelMap &GetLabelMap() const {
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return m_labelMap;
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}
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const TerminalMap &GetTerminalMap() const {
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return m_terminalMap;
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}
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const UTrieNode *GetNonTerminalChild() const {
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return m_gapNode;
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}
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UTrieNode *GetOrCreateTerminalChild(const Word &sourceTerm);
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UTrieNode *GetOrCreateNonTerminalChild(const Word &targetNonTerm);
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TargetPhraseCollection &GetOrCreateTargetPhraseCollection(
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const TargetPhrase &);
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bool IsLeaf() const {
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return m_terminalMap.empty() && m_gapNode == NULL;
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}
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bool HasRules() const {
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return !m_labelMap.empty();
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}
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void Prune(size_t tableLimit);
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void Sort(size_t tableLimit);
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private:
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friend class RuleTableUTrie;
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UTrieNode() : m_gapNode(NULL) {}
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int InsertLabel(int i, const Word &w) {
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std::vector<Word> &inner = m_labelTable[i];
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for (size_t j = 0; j < inner.size(); ++j) {
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if (inner[j] == w) {
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return j;
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}
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}
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inner.push_back(w);
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return inner.size()-1;
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}
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LabelTable m_labelTable;
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LabelMap m_labelMap;
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TerminalMap m_terminalMap;
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UTrieNode *m_gapNode;
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};
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} // namespace Moses
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