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// $Id$
// vim:tabstop=2
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2006 University of Edinburgh
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 <string>
#include <iterator>
#include <queue>
#include <algorithm>
#include <sys/stat.h>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/thread/tss.hpp>
#include "PhraseDictionaryCompact.h"
#include "moses/FactorCollection.h"
#include "moses/Word.h"
#include "moses/Util.h"
#include "moses/InputFileStream.h"
#include "moses/StaticData.h"
#include "moses/Range.h"
#include "moses/ThreadPool.h"
#include "util/exception.hh"
using namespace std;
using namespace boost::algorithm;
namespace Moses
{
PhraseDictionaryCompact::SentenceCache PhraseDictionaryCompact::m_sentenceCache;
PhraseDictionaryCompact::PhraseDictionaryCompact(const std::string &line)
:PhraseDictionary(line, true)
,m_inMemory(s_inMemoryByDefault)
,m_useAlignmentInfo(true)
,m_hash(10, 16)
,m_phraseDecoder(0)
{
ReadParameters();
}
void PhraseDictionaryCompact::Load(AllOptions::ptr const& opts)
{
m_options = opts;
const StaticData &staticData = StaticData::Instance();
SetFeaturesToApply();
std::string tFilePath = m_filePath;
std::string suffix = ".minphr";
if (!ends_with(tFilePath, suffix)) tFilePath += suffix;
if (!FileExists(tFilePath))
throw runtime_error("Error: File " + tFilePath + " does not exist.");
m_phraseDecoder
= new PhraseDecoder(*this, &m_input, &m_output, m_numScoreComponents);
std::FILE* pFile = std::fopen(tFilePath.c_str() , "r");
size_t indexSize;
//if(m_inMemory)
// Load source phrase index into memory
indexSize = m_hash.Load(pFile);
// else
// Keep source phrase index on disk
//indexSize = m_hash.LoadIndex(pFile);
size_t coderSize = m_phraseDecoder->Load(pFile);
size_t phraseSize;
if(m_inMemory)
// Load target phrase collections into memory
phraseSize = m_targetPhrasesMemory.load(pFile, false);
else
// Keep target phrase collections on disk
phraseSize = m_targetPhrasesMapped.load(pFile, true);
UTIL_THROW_IF2(indexSize == 0 || coderSize == 0 || phraseSize == 0,
"Not successfully loaded");
}
TargetPhraseCollection::shared_ptr
PhraseDictionaryCompact::
GetTargetPhraseCollectionNonCacheLEGACY(const Phrase &sourcePhrase) const
{
//cerr << "sourcePhrase=" << sourcePhrase << endl;
TargetPhraseCollection::shared_ptr ret;
// There is no souch source phrase if source phrase is longer than longest
// observed source phrase during compilation
if(sourcePhrase.GetSize() > m_phraseDecoder->GetMaxSourcePhraseLength())
return ret;
// Retrieve target phrase collection from phrase table
TargetPhraseVectorPtr decodedPhraseColl
= m_phraseDecoder->CreateTargetPhraseCollection(sourcePhrase, true, true);
if(decodedPhraseColl != NULL && decodedPhraseColl->size()) {
TargetPhraseVectorPtr tpv(new TargetPhraseVector(*decodedPhraseColl));
TargetPhraseCollection::shared_ptr phraseColl(new TargetPhraseCollection);
// Score phrases and if possible apply ttable_limit
TargetPhraseVector::iterator nth =
(m_tableLimit == 0 || tpv->size() < m_tableLimit) ?
tpv->end() : tpv->begin() + m_tableLimit;
NTH_ELEMENT4(tpv->begin(), nth, tpv->end(), CompareTargetPhrase());
for(TargetPhraseVector::iterator it = tpv->begin(); it != nth; it++) {
TargetPhrase *tp = new TargetPhrase(*it);
phraseColl->Add(tp);
}
// Cache phrase pair for clean-up or retrieval with PREnc
const_cast<PhraseDictionaryCompact*>(this)->CacheForCleanup(phraseColl);
return phraseColl;
} else
return ret;
}
TargetPhraseVectorPtr
PhraseDictionaryCompact::
GetTargetPhraseCollectionRaw(const Phrase &sourcePhrase) const
{
// There is no such source phrase if source phrase is longer than longest
// observed source phrase during compilation
if(sourcePhrase.GetSize() > m_phraseDecoder->GetMaxSourcePhraseLength())
return TargetPhraseVectorPtr();
// Retrieve target phrase collection from phrase table
return m_phraseDecoder->CreateTargetPhraseCollection(sourcePhrase, true, false);
}
PhraseDictionaryCompact::
~PhraseDictionaryCompact()
{
if(m_phraseDecoder)
delete m_phraseDecoder;
}
void
PhraseDictionaryCompact::
CacheForCleanup(TargetPhraseCollection::shared_ptr tpc)
{
if(!m_sentenceCache.get())
m_sentenceCache.reset(new PhraseCache());
m_sentenceCache->push_back(tpc);
}
void
PhraseDictionaryCompact::
AddEquivPhrase(const Phrase &source, const TargetPhrase &targetPhrase)
{ }
void
PhraseDictionaryCompact::
CleanUpAfterSentenceProcessing(const InputType &source)
{
if(!m_sentenceCache.get())
m_sentenceCache.reset(new PhraseCache());
m_phraseDecoder->PruneCache();
m_sentenceCache->clear();
ReduceCache();
}
bool PhraseDictionaryCompact::s_inMemoryByDefault = false;
void
PhraseDictionaryCompact::
SetStaticDefaultParameters(Parameter const& param)
{
param.SetParameter(s_inMemoryByDefault, "minphr-memory", false);
}
}
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