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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef LATINIME_TYPING_SCORING_H
     18 #define LATINIME_TYPING_SCORING_H
     19 
     20 #include "defines.h"
     21 #include "suggest/core/policy/scoring.h"
     22 #include "suggest/policyimpl/typing/scoring_params.h"
     23 
     24 namespace latinime {
     25 
     26 class DicNode;
     27 class DicTraverseSession;
     28 
     29 class TypingScoring : public Scoring {
     30  public:
     31     static const TypingScoring *getInstance() { return &sInstance; }
     32 
     33     AK_FORCE_INLINE bool getMostProbableString(
     34             const DicTraverseSession *const traverseSession, const int terminalSize,
     35             const float languageWeight, int *const outputCodePoints, int *const type,
     36             int *const freq) const {
     37         return false;
     38     }
     39 
     40     AK_FORCE_INLINE void safetyNetForMostProbableString(const int terminalSize,
     41             const int maxScore, int *const outputCodePoints, int *const frequencies) const {
     42     }
     43 
     44     AK_FORCE_INLINE void searchWordWithDoubleLetter(DicNode *terminals,
     45             const int terminalSize, int *doubleLetterTerminalIndex,
     46             DoubleLetterLevel *doubleLetterLevel) const {
     47     }
     48 
     49     AK_FORCE_INLINE float getAdjustedLanguageWeight(DicTraverseSession *const traverseSession,
     50              DicNode *const terminals, const int size) const {
     51         return 1.0f;
     52     }
     53 
     54     AK_FORCE_INLINE int calculateFinalScore(const float compoundDistance,
     55             const int inputSize, const bool forceCommit) const {
     56         const float maxDistance = ScoringParams::DISTANCE_WEIGHT_LANGUAGE
     57                 + static_cast<float>(inputSize) * ScoringParams::TYPING_MAX_OUTPUT_SCORE_PER_INPUT;
     58         const float score = ScoringParams::TYPING_BASE_OUTPUT_SCORE
     59                 - compoundDistance / maxDistance
     60                 + (forceCommit ? ScoringParams::AUTOCORRECT_OUTPUT_THRESHOLD : 0.0f);
     61         return static_cast<int>(score * SUGGEST_INTERFACE_OUTPUT_SCALE);
     62     }
     63 
     64     AK_FORCE_INLINE float getDoubleLetterDemotionDistanceCost(const int terminalIndex,
     65             const int doubleLetterTerminalIndex,
     66             const DoubleLetterLevel doubleLetterLevel) const {
     67         return 0.0f;
     68     }
     69 
     70     AK_FORCE_INLINE bool doesAutoCorrectValidWord() const {
     71         return false;
     72     }
     73 
     74  private:
     75     DISALLOW_COPY_AND_ASSIGN(TypingScoring);
     76     static const TypingScoring sInstance;
     77 
     78     TypingScoring() {}
     79     ~TypingScoring() {}
     80 };
     81 } // namespace latinime
     82 #endif // LATINIME_TYPING_SCORING_H
     83