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109 lines
3.3 KiB
C++
109 lines
3.3 KiB
C++
#pragma once
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// $Id$
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/***********************************************************************
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Moses - factored phrase-based, hierarchical and syntactic language decoder
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Copyright (C) 2009 Hieu Hoang
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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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#include <fstream>
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#include <vector>
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#include <map>
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#include "Word.h"
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#include "TargetPhraseCollection.h"
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#include "Phrase.h"
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namespace OnDiskPt
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{
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class OnDiskWrapper;
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class SourcePhrase;
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/** A node in the source tree trie */
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class PhraseNode
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{
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friend std::ostream& operator<<(std::ostream&, const PhraseNode&);
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protected:
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uint64_t m_filePos, m_value;
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typedef std::map<Word, PhraseNode> ChildColl;
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ChildColl m_children;
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PhraseNode *m_currChild;
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bool m_saved;
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size_t m_pos;
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std::vector<float> m_counts;
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TargetPhraseCollection m_targetPhraseColl;
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char *m_memLoad, *m_memLoadLast;
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uint64_t m_numChildrenLoad;
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void AddTargetPhrase(size_t pos, const SourcePhrase &sourcePhrase
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, TargetPhrase *targetPhrase, OnDiskWrapper &onDiskWrapper
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, size_t tableLimit, const std::vector<float> &counts, OnDiskPt::PhrasePtr spShort);
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size_t ReadChild(Word &wordFound, uint64_t &childFilePos, const char *mem) const;
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void GetChild(Word &wordFound, uint64_t &childFilePos, size_t ind, OnDiskWrapper &onDiskWrapper) const;
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public:
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static size_t GetNodeSize(size_t numChildren, size_t wordSize, size_t countSize);
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PhraseNode(); // unsaved node
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PhraseNode(uint64_t filePos, OnDiskWrapper &onDiskWrapper); // load saved node
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~PhraseNode();
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void Add(const Word &word, uint64_t nextFilePos, size_t wordSize);
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void Save(OnDiskWrapper &onDiskWrapper, size_t pos, size_t tableLimit);
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void AddTargetPhrase(const SourcePhrase &sourcePhrase, TargetPhrase *targetPhrase
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, OnDiskWrapper &onDiskWrapper, size_t tableLimit
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, const std::vector<float> &counts, OnDiskPt::PhrasePtr spShort);
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uint64_t GetFilePos() const {
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return m_filePos;
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}
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uint64_t GetValue() const {
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return m_value;
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}
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void SetValue(uint64_t value) {
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m_value = value;
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}
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size_t GetSize() const {
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return m_children.size();
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}
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bool Saved() const {
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return m_saved;
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}
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void SetPos(size_t pos) {
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m_pos = pos;
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}
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const PhraseNode *GetChild(const Word &wordSought, OnDiskWrapper &onDiskWrapper) const;
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TargetPhraseCollection::shared_ptr
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GetTargetPhraseCollection(size_t tableLimit,
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OnDiskWrapper &onDiskWrapper) const;
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void AddCounts(const std::vector<float> &counts) {
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m_counts = counts;
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}
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float GetCount(size_t ind) const;
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};
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}
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