| // 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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| |
| #ifndef MOZC_CONVERTER_CANDIDATE_FILTER_H_ |
| #define MOZC_CONVERTER_CANDIDATE_FILTER_H_ |
| |
| #include <set> |
| #include <string> |
| #include <vector> |
| #include "base/port.h" |
| #include "converter/segments.h" |
| |
| namespace mozc { |
| |
| struct Node; |
| class POSMatcher; |
| class SuggestionFilter; |
| class SuppressionDictionary; |
| |
| namespace converter { |
| |
| class CandidateFilter { |
| public: |
| CandidateFilter(const SuppressionDictionary *suppression_dictionary, |
| const POSMatcher *pos_matcher, |
| const SuggestionFilter *suggestion_filter); |
| ~CandidateFilter(); |
| |
| enum ResultType { |
| GOOD_CANDIDATE, // Can insert the candidate into the list |
| BAD_CANDIDATE, // Do not insert the candidate |
| STOP_ENUMERATION, // Do not insert and stop enumurations |
| }; |
| |
| // Checks if the candidate should be filtered out. |
| ResultType FilterCandidate(const string &original_key, |
| const Segment::Candidate *candidate, |
| const vector<const Node *> &nodes, |
| Segments::RequestType request_type); |
| |
| // Resets the internal state. |
| void Reset(); |
| |
| private: |
| ResultType FilterCandidateInternal(const string &original_key, |
| const Segment::Candidate *candidate, |
| const vector<const Node *> &nodes, |
| Segments::RequestType request_type); |
| |
| const SuppressionDictionary *suppression_dictionary_; |
| const POSMatcher *pos_matcher_; |
| const SuggestionFilter *suggestion_filter_; |
| |
| set<string> seen_; |
| const Segment::Candidate *top_candidate_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CandidateFilter); |
| }; |
| |
| } // namespace converter |
| } // namespace mozc |
| |
| #endif // MOZC_CONVERTER_CANDIDATE_FILTER_H_ |