| // 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: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // 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 |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef MOZC_COMPOSER_INTERNAL_TYPING_MODEL_H_ |
| #define MOZC_COMPOSER_INTERNAL_TYPING_MODEL_H_ |
| |
| #include "base/port.h" |
| #include "base/scoped_ptr.h" |
| #include "base/string_piece.h" |
| #include "session/commands.pb.h" |
| // for FRIEND_TEST() |
| #include "testing/base/public/gunit_prod.h" |
| |
| |
| namespace mozc { |
| namespace composer { |
| |
| // TypingModel, with key-value like interface. |
| // The only exported interface is GetCost, which takes key |
| // and returns cost value. |
| // The key-value data source should be provided via the constructor. |
| // Typically the constructor taks data generated by gen_typing_model.py. |
| class TypingModel { |
| public: |
| TypingModel(const char *characters, size_t characters_size, |
| const uint8 *cost_table, size_t cost_table_size, |
| const int32 *mapping_table); |
| |
| virtual ~TypingModel() {} |
| |
| // Gets cost value from key. |
| // virtual for mocking. |
| virtual int GetCost(StringPiece key) const; |
| |
| // Gets a TypingModel based on SpecialRomanjiTable. |
| // NULL if no corresponding model is available. |
| static const TypingModel *GetTypingModel( |
| const mozc::commands::Request::SpecialRomanjiTable |
| &special_romanji_table); |
| |
| // No data means its const is infinity. |
| static const int kInfinity; |
| |
| // In typing model, meaning no corresponding data. |
| static const uint8 kNoData; |
| |
| private: |
| FRIEND_TEST(TypingModelTest, Constructor); |
| FRIEND_TEST(TypingModelTest, GetIndex); |
| |
| // Gets index from key. |
| // Given cost table via the constructor is simple array |
| // so when accessing to cost value, index should be |
| // calculated by this method. |
| // c.f. gen_typing_model.py's GetIndexFromKey. |
| size_t GetIndex(StringPiece key) const; |
| |
| // Radix table, needed by GetIndex. |
| scoped_ptr<unsigned char[]> character_to_radix_table_; |
| const size_t characters_size_; |
| const uint8 *cost_table_; |
| const size_t cost_table_size_; |
| const int32 *mapping_table_; |
| }; |
| |
| } // namespace composer |
| } // namespace mozc |
| |
| #endif // MOZC_COMPOSER_INTERNAL_TYPING_MODEL_H_ |