| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
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| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef MOZC_REWRITER_USER_SEGMENT_HISTORY_REWRITER_H_ |
| #define MOZC_REWRITER_USER_SEGMENT_HISTORY_REWRITER_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "rewriter/rewriter_interface.h" |
| #include "converter/segments.h" |
| |
| namespace mozc { |
| class ConversionRequest; |
| class POSMatcher; |
| class PosGroup; |
| |
| namespace storage { |
| class LRUStorage; |
| } // namespace storage |
| |
| class UserSegmentHistoryRewriter : public RewriterInterface { |
| public: |
| struct ScoreType { |
| uint32 last_access_time; |
| uint32 score; |
| const Segment::Candidate *candidate; |
| }; |
| |
| UserSegmentHistoryRewriter(const POSMatcher *pos_matcher, |
| const PosGroup *pos_group); |
| virtual ~UserSegmentHistoryRewriter(); |
| |
| virtual bool Rewrite(const ConversionRequest &request, |
| Segments *segments) const; |
| |
| virtual void Finish(const ConversionRequest &request, Segments *segments); |
| |
| virtual bool Reload(); |
| |
| virtual void Clear(); |
| |
| private: |
| bool IsAvailable(const Segments &segments) const; |
| bool GetScore(const Segments &segments, |
| size_t segment_index, |
| int candidate_index, |
| uint32 *score, |
| uint32 *last_access_time) const; |
| bool Replaceable(const Segment::Candidate &lhs, |
| const Segment::Candidate &rhs) const; |
| void RememberFirstCandidate(const Segments &segments, |
| size_t segment_index); |
| void RememberNumberPreference(const Segment &segment); |
| bool RewriteNumber(Segment *segment) const; |
| bool ShouldRewrite(const Segment &segment, |
| size_t *max_candidates_size) const; |
| void InsertTriggerKey(const Segment &segment); |
| bool IsPunctuation(const Segment &seg, |
| const Segment::Candidate &candidate) const; |
| bool GetFeatureLN(const Segments &segments, |
| size_t i, |
| const string &base_key, |
| const string &base_value, |
| string *value) const; |
| bool GetFeatureRN(const Segments &segments, |
| size_t i, |
| const string &base_key, |
| const string &base_value, |
| string *value) const; |
| bool SortCandidates(const vector<ScoreType> &sorted_scores, |
| Segment *segment) const; |
| |
| |
| scoped_ptr<mozc::storage::LRUStorage> storage_; |
| const POSMatcher *pos_matcher_; |
| const PosGroup *pos_group_; |
| }; |
| |
| } // namespace mozc |
| |
| #endif // MOZC_REWRITER_USER_SEGMENT_HISTORY_REWRITER_H_ |