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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
***********************************************************************/
#ifndef moses_SquareMatrix_h
#define moses_SquareMatrix_h
#include <iostream>
#include "TypeDef.h"
#include "Util.h"
#include "Bitmap.h"
namespace Moses
{
//! A square array of floats to store future costs in the phrase-based decoder
class SquareMatrix
{
friend std::ostream& operator<<(std::ostream &out, const SquareMatrix &matrix);
protected:
const size_t m_size; /**< length of the square (sentence length) */
float *m_array; /**< two-dimensional array to store floats */
SquareMatrix(); // not implemented
SquareMatrix(const SquareMatrix ©); // not implemented
public:
SquareMatrix(size_t size)
:m_size(size) {
m_array = (float*) malloc(sizeof(float) * size * size);
}
~SquareMatrix() {
free(m_array);
}
// set upper triangle
void InitTriangle(float val);
/** Returns length of the square: typically the sentence length */
inline size_t GetSize() const {
return m_size;
}
/** Get a future cost score for a span */
inline float GetScore(size_t startPos, size_t endPos) const {
return m_array[startPos * m_size + endPos];
}
/** Set a future cost score for a span */
inline void SetScore(size_t startPos, size_t endPos, float value) {
m_array[startPos * m_size + endPos] = value;
}
float CalcEstimatedScore( Bitmap const& ) const;
float CalcEstimatedScore( Bitmap const&, size_t startPos, size_t endPos ) const;
TO_STRING();
};
inline std::ostream& operator<<(std::ostream &out, const SquareMatrix &matrix)
{
for (size_t endPos = 0 ; endPos < matrix.GetSize() ; endPos++) {
for (size_t startPos = 0 ; startPos < matrix.GetSize() ; startPos++)
out << matrix.GetScore(startPos, endPos) << " ";
out << std::endl;
}
return out;
}
}
#endif
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