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#pragma once
// $Id$
/***********************************************************************
Moses - factored phrase-based, hierarchical and syntactic language decoder
Copyright (C) 2009 Hieu Hoang
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
***********************************************************************/
#include <fstream>
#include <vector>
#include <map>
#include "Word.h"
#include "TargetPhraseCollection.h"
namespace OnDiskPt
{
class OnDiskWrapper;
class SourcePhrase;
class PhraseNode
{
friend std::ostream& operator<<(std::ostream&, const PhraseNode&);
protected:
UINT64 m_filePos, m_value;
typedef std::map<Word, PhraseNode> ChildColl;
ChildColl m_children;
PhraseNode *m_currChild;
bool m_saved;
size_t m_pos;
std::vector<float> m_counts;
TargetPhraseCollection m_targetPhraseColl;
char *m_memLoad, *m_memLoadLast;
UINT64 m_numChildrenLoad;
void AddTargetPhrase(size_t pos, const SourcePhrase &sourcePhrase
, TargetPhrase *targetPhrase, OnDiskWrapper &onDiskWrapper
, size_t tableLimit, const std::vector<float> &counts);
size_t ReadChild(Word &wordFound, UINT64 &childFilePos, const char *mem, size_t numFactors) const;
void GetChild(Word &wordFound, UINT64 &childFilePos, size_t ind, OnDiskWrapper &onDiskWrapper) const;
public:
static size_t GetNodeSize(size_t numChildren, size_t wordSize, size_t countSize);
PhraseNode(); // unsaved node
PhraseNode(UINT64 filePos, OnDiskWrapper &onDiskWrapper); // load saved node
~PhraseNode();
void Add(const Word &word, UINT64 nextFilePos, size_t wordSize);
void Save(OnDiskWrapper &onDiskWrapper, size_t pos, size_t tableLimit);
void AddTargetPhrase(const SourcePhrase &sourcePhrase, TargetPhrase *targetPhrase
, OnDiskWrapper &onDiskWrapper, size_t tableLimit
, const std::vector<float> &counts);
UINT64 GetFilePos() const {
return m_filePos;
}
UINT64 GetValue() const {
return m_value;
}
void SetValue(UINT64 value) {
m_value = value;
}
size_t GetSize() const {
return m_children.size();
}
bool Saved() const {
return m_saved;
}
void SetPos(size_t pos) {
m_pos = pos;
}
const PhraseNode *GetChild(const Word &wordSought, OnDiskWrapper &onDiskWrapper) const;
const TargetPhraseCollection *GetTargetPhraseCollection(size_t tableLimit, OnDiskWrapper &onDiskWrapper) const;
void AddCounts(const std::vector<float> &counts) {
m_counts = counts;
}
float GetCount(size_t ind) const;
};
}
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