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/*
* BidirectionalReorderingState.cpp
*
* Created on: 22 Mar 2016
* Author: hieu
*/
#include <boost/functional/hash_fwd.hpp>
#include "BidirectionalReorderingState.h"
#include "../../legacy/Util2.h"
#include "../../PhraseBased/Manager.h"
using namespace std;
namespace Moses2
{
BidirectionalReorderingState::BidirectionalReorderingState(
const LRModel &config, LRState *bw, LRState *fw, size_t offset) :
LRState(config, LRModel::Bidirectional, offset), m_backward(bw), m_forward(
fw)
{
}
BidirectionalReorderingState::~BidirectionalReorderingState()
{
// TODO Auto-generated destructor stub
}
void BidirectionalReorderingState::Init(const LRState *prev,
const TargetPhrase<Moses2::Word> &topt, const InputPathBase &path, bool first,
const Bitmap *coverage)
{
if (m_backward) {
m_backward->Init(prev, topt, path, first, coverage);
}
if (m_forward) {
m_forward->Init(prev, topt, path, first, coverage);
}
}
std::string BidirectionalReorderingState::ToString() const
{
return "BidirectionalReorderingState " + SPrint(this) + " "
+ SPrint(m_backward) + " " + SPrint(m_forward);
}
size_t BidirectionalReorderingState::hash() const
{
size_t ret = m_backward->hash();
boost::hash_combine(ret, m_forward->hash());
return ret;
}
bool BidirectionalReorderingState::operator==(const FFState& o) const
{
if (&o == this) return true;
BidirectionalReorderingState const &other =
static_cast<BidirectionalReorderingState const&>(o);
bool ret = (*m_backward == *other.m_backward)
&& (*m_forward == *other.m_forward);
return ret;
}
void BidirectionalReorderingState::Expand(const ManagerBase &mgr,
const LexicalReordering &ff, const Hypothesis &hypo, size_t phraseTableInd,
Scores &scores, FFState &state) const
{
BidirectionalReorderingState &stateCast =
static_cast<BidirectionalReorderingState&>(state);
m_backward->Expand(mgr, ff, hypo, phraseTableInd, scores,
*stateCast.m_backward);
m_forward->Expand(mgr, ff, hypo, phraseTableInd, scores,
*stateCast.m_forward);
}
} /* namespace Moses2 */
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