mosesdecoder/moses/WordsBitmap.cpp

85 lines
2.1 KiB
C++

// $Id$
/***********************************************************************
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 "WordsBitmap.h"
namespace Moses
{
TO_STRING_BODY(WordsBitmap);
int WordsBitmap::GetFutureCosts(int lastPos) const
{
int sum=0;
bool aim1=0,ai=0,aip1=m_bitmap[0];
for(size_t i=0; i<m_size; ++i) {
aim1 = ai;
ai = aip1;
aip1 = (i+1==m_size || m_bitmap[i+1]);
#ifndef NDEBUG
if( i>0 ) {
assert( aim1==(i==0||m_bitmap[i-1]==1));
}
if( i+1<m_size ) {
assert( aip1==m_bitmap[i+1]);
}
#endif
if((i==0||aim1)&&ai==0) {
sum+=abs(lastPos-static_cast<int>(i)+1);
// sum+=getJumpCosts(lastPos,i,maxJumpWidth);
}
// if(sum>1e5) return sum;
if(i>0 && ai==0 && (i+1==m_size||aip1) )
lastPos = (int) (i+1);
}
// sum+=getJumpCosts(lastPos,as,maxJumpWidth);
sum+=abs(lastPos-static_cast<int>(m_size)+1); //getCosts(lastPos,as);
assert(sum>=0);
// TRACE_ERR(sum<<"\n");
return sum;
}
bool WordsBitmap::IsAdjacent(size_t startPos, size_t endPos) const
{
if (GetNumWordsCovered() == 0) {
return true;
}
size_t first = GetFirstGapPos();
size_t last = GetLastGapPos();
if (startPos == last || endPos == first) {
return true;
}
return false;
}
}