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#pragma once
#include <vector>
#include "moses/Syntax/S2T/PChart.h"
#include "PatternApplicationTrie.h"
#include "SymbolRange.h"
#include "TailLattice.h"
namespace Moses
{
namespace Syntax
{
namespace S2T
{
class TailLatticeBuilder
{
public:
TailLatticeBuilder(PChart &chart) : m_chart(chart) {}
// Given a key from a PatternApplicationTrie and the valid ranges of its
// symbols, construct a TailLattice.
void Build(const std::vector<const PatternApplicationTrie *> &,
const std::vector<SymbolRange> &,
TailLattice &, std::vector<std::vector<bool> > &);
private:
// Auxiliary function used by Build. Enlarges a TailLattice, if necessary,
// and clears the innermost vectors.
void ExtendAndClear(const std::vector<const PatternApplicationTrie *> &,
const std::vector<SymbolRange> &,
TailLattice &, std::vector<std::vector<bool> > &);
PChart &m_chart;
};
} // namespace S2T
} // namespace Syntax
} // namespace Moses
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