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// $Id$
/***********************************************************************
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 "GenerationDictionary.h"
#include "FactorCollection.h"
#include "Word.h"
#include "Util.h"
#include "InputFileStream.h"
#include "StaticData.h"
#include "util/exception.hh"
#include "util/string_stream.hh"
using namespace std;
namespace Moses
{
std::vector<GenerationDictionary*> GenerationDictionary::s_staticColl;
GenerationDictionary::GenerationDictionary(const std::string &line)
: DecodeFeature(line, true)
{
s_staticColl.push_back(this);
ReadParameters();
}
void GenerationDictionary::Load(AllOptions::ptr const& opts)
{
m_options = opts;
FactorCollection &factorCollection = FactorCollection::Instance();
const size_t numFeatureValuesInConfig = this->GetNumScoreComponents();
// data from file
InputFileStream inFile(m_filePath);
UTIL_THROW_IF2(!inFile.good(), "Couldn't read " << m_filePath);
string line;
size_t lineNum = 0;
while(getline(inFile, line)) {
++lineNum;
vector<string> token = Tokenize( line );
// add each line in generation file into class
Word *inputWord = new Word(); // deleted in destructor
Word outputWord;
// create word with certain factors filled out
// inputs
vector<string> factorString = Tokenize( token[0], "|" );
for (size_t i = 0 ; i < GetInput().size() ; i++) {
FactorType factorType = GetInput()[i];
const Factor *factor = factorCollection.AddFactor( Output, factorType, factorString[i]);
inputWord->SetFactor(factorType, factor);
}
factorString = Tokenize( token[1], "|" );
for (size_t i = 0 ; i < GetOutput().size() ; i++) {
FactorType factorType = GetOutput()[i];
const Factor *factor = factorCollection.AddFactor( Output, factorType, factorString[i]);
outputWord.SetFactor(factorType, factor);
}
size_t numFeaturesInFile = token.size() - 2;
if (numFeaturesInFile < numFeatureValuesInConfig) {
util::StringStream strme;
strme << m_filePath << ":" << lineNum << ": expected " << numFeatureValuesInConfig
<< " feature values, but found " << numFeaturesInFile << "\n";
throw strme.str();
}
std::vector<float> scores(numFeatureValuesInConfig, 0.0f);
for (size_t i = 0; i < numFeatureValuesInConfig; i++)
scores[i] = FloorScore(TransformScore(Scan<float>(token[2+i])));
Collection::iterator iterWord = m_collection.find(inputWord);
if (iterWord == m_collection.end()) {
m_collection[inputWord][outputWord].Assign(this, scores);
} else {
// source word already in there. delete input word to avoid mem leak
(iterWord->second)[outputWord].Assign(this, scores);
delete inputWord;
}
}
inFile.Close();
}
GenerationDictionary::~GenerationDictionary()
{
Collection::const_iterator iter;
for (iter = m_collection.begin() ; iter != m_collection.end() ; ++iter) {
delete iter->first;
}
}
const OutputWordCollection *GenerationDictionary::FindWord(const Word &word) const
{
const OutputWordCollection *ret;
Collection::const_iterator iter = m_collection.find(&word);
if (iter == m_collection.end()) {
// can't find source phrase
ret = NULL;
} else {
ret = &iter->second;
}
return ret;
}
void GenerationDictionary::SetParameter(const std::string& key, const std::string& value)
{
if (key == "path") {
m_filePath = value;
} else {
DecodeFeature::SetParameter(key, value);
}
}
}
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