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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 <limits>
#include <iostream>
#include <sstream>
#include "LM/SingleFactor.h"
#include "TypeDef.h"
#include "Util.h"
#include "FactorCollection.h"
#include "FFState.h"
#include "Phrase.h"
#include "StaticData.h"
using namespace std;
namespace Moses
{
LanguageModelSingleFactor::~LanguageModelSingleFactor() {}
struct PointerState : public FFState {
const void* lmstate;
PointerState(const void* lms) {
lmstate = lms;
}
int Compare(const FFState& o) const {
const PointerState& other = static_cast<const PointerState&>(o);
if (other.lmstate > lmstate) return 1;
else if (other.lmstate < lmstate) return -1;
return 0;
}
};
LanguageModelPointerState::LanguageModelPointerState()
{
m_nullContextState = new PointerState(NULL);
m_beginSentenceState = new PointerState(NULL);
}
LanguageModelPointerState::~LanguageModelPointerState() {}
const FFState *LanguageModelPointerState::GetNullContextState() const
{
return m_nullContextState;
}
const FFState *LanguageModelPointerState::GetBeginSentenceState() const
{
return m_beginSentenceState;
}
FFState *LanguageModelPointerState::NewState(const FFState *from) const
{
return new PointerState(from ? static_cast<const PointerState*>(from)->lmstate : NULL);
}
LMResult LanguageModelPointerState::GetValueForgotState(const std::vector<const Word*> &contextFactor, FFState &outState) const
{
return GetValue(contextFactor, &static_cast<PointerState&>(outState).lmstate);
}
}
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