mosesdecoder/moses/Syntax/SHyperedge.cpp

#include "SHyperedge.h"

#include "moses/StaticData.h"

#include "SVertex.h"

namespace Moses
{
namespace Syntax
{

Phrase GetOneBestTargetYield(const SHyperedge &h)
{
  FactorType placeholderFactor = StaticData::Instance().GetPlaceholderFactor();

  Phrase ret(ARRAY_SIZE_INCR);

  const AlignmentInfo::NonTermIndexMap &targetToSourceMap =
    h.translation->GetAlignNonTerm().GetNonTermIndexMap2();

  for (std::size_t pos = 0; pos < h.translation->GetSize(); ++pos) {
    const Word &word = h.translation->GetWord(pos);
    if (word.IsNonTerminal()) {
      std::size_t sourceIndex = targetToSourceMap[pos];
      const SHyperedge &incoming = *h.tail[sourceIndex]->best;
      Phrase subPhrase = GetOneBestTargetYield(incoming);
      ret.Append(subPhrase);
    } else {
      ret.AddWord(word);
      if (placeholderFactor == NOT_FOUND) {
        continue;
      }
      assert(false);
      // FIXME Modify this chunk of code to work for SHyperedge.
/*
      std::set<std::size_t> sourcePosSet =
        h.translation->GetAlignTerm().GetAlignmentsForTarget(pos);
      if (sourcePosSet.size() == 1) {
        const std::vector<const Word*> *ruleSourceFromInputPath =
          hypo.GetTranslationOption().GetSourceRuleFromInputPath();
        UTIL_THROW_IF2(ruleSourceFromInputPath == NULL,
                       "Source Words in of the rules hasn't been filled out");
        std::size_t sourcePos = *sourcePosSet.begin();
        const Word *sourceWord = ruleSourceFromInputPath->at(sourcePos);
        UTIL_THROW_IF2(sourceWord == NULL,
                       "Null source word at position " << sourcePos);
        const Factor *factor = sourceWord->GetFactor(placeholderFactor);
        if (factor) {
          ret.Back()[0] = factor;
        }
      }
*/
    }
  }
  return ret;
}

}  // Syntax
}  // Moses