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#pragma once
#include <boost/functional/hash.hpp>
#include "moses/Factor.h"
#include "moses/Word.h"
namespace Moses
{
namespace Syntax
{
// Assumes that only the first factor is relevant. i.e. factored decoding will
// *not* work in moses_chart unless this is changed (among other things).
class SymbolHasher
{
public:
std::size_t operator()(const Word &s) const {
const Factor *f = s[0];
return hash_value(*f);
}
};
} // namespace Syntax
} // namespace Moses
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