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#ifndef MOZC_REWRITER_NUMBER_REWRITER_H_
#define MOZC_REWRITER_NUMBER_REWRITER_H_

#include "converter/segments.h"
#include "rewriter/rewriter_interface.h"

namespace mozc {
class ConversionRequest;
class POSMatcher;

class NumberRewriter : public RewriterInterface  {
 public:
  // Rewrite type
  enum RewriteType {
    NO_REWRITE = 0,
    ARABIC_FIRST,  // arabic candidates first ordering
    KANJI_FIRST,  // kanji candidates first ordering
  };

  explicit NumberRewriter(const POSMatcher *pos_matcher);
  virtual ~NumberRewriter();

  virtual int capability() const;

  virtual bool Rewrite(const ConversionRequest &request,
                       Segments *segments) const;

 private:
  RewriteType GetRewriteTypeAndBase(
      const Segment &seg,
      int *base_candidate_pos,
      Segment::Candidate *arabic_candidate) const;

  bool IsNumber(uint16 lid) const;

  const POSMatcher *pos_matcher_;
};

}  // namespace mozc
#endif  // MOZC_REWRITER_NUMBER_REWRITER_H_