src/rewriter/correction_rewriter.h

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#ifndef MOZC_REWRITER_CORRECTION_REWRITER_H_
#define MOZC_REWRITER_CORRECTION_REWRITER_H_

#include <map>
#include <string>
#include <vector>

#include "rewriter/rewriter_interface.h"

namespace mozc {

struct ReadingCorrectionItem {
  // ex. (value, error, correction) = ("雰囲気", "ふいんき", "ふんいき")
  const char *value;
  const char *error;
  const char *correction;
};

class ConversionRequest;
class DataManagerInterface;
class Segments;

class CorrectionRewriter : public RewriterInterface  {
 public:
  // Returnes an instance of ReadingCorrectionRewriter initialized with the
  // default provided by data_manager.  The caller takes the ownership of the
  // instance.
  static CorrectionRewriter *CreateCorrectionRewriter(
      const DataManagerInterface *data_manager);

  CorrectionRewriter(const ReadingCorrectionItem *reading_corrections,
                     size_t array_size);
  virtual ~CorrectionRewriter();
  virtual bool Rewrite(const ConversionRequest &request,
                       Segments *segments) const;

  virtual int capability(const ConversionRequest &request) const {
    return RewriterInterface::ALL;
  }

 private:
  const ReadingCorrectionItem *reading_corrections_;
  size_t size_;

  // Looks up corrections with key and value. Return true if at least
  // one correction is found in the internal dictionary.
  // If |value| is empty, looks up corrections only using the key.
  // The matched results are saved in |results|.
  // Return false if |results| is empty.
  bool LookupCorrection(
      const string &key,
      const string &value,
      vector<const ReadingCorrectionItem *> *results) const;
};

}  // namespace mozc
#endif  // MOZC_REWRITER_CORRECTION_REWRITER_H_