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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/dictionary/error_type_utils.h"
     22 #include "suggest/core/policy/scoring.h"
     23 #include "suggest/core/session/dic_traverse_session.h"
     24 #include "suggest/policyimpl/typing/scoring_params.h"
     25 
     26 namespace latinime {
     27 
     28 class DicNode;
     29 class DicTraverseSession;
     30 
     31 class TypingScoring : public Scoring {
     32  public:
     33     static const TypingScoring *getInstance() { return &sInstance; }
     34 
     35     AK_FORCE_INLINE void getMostProbableString(const DicTraverseSession *const traverseSession,
     36             const float languageWeight, SuggestionResults *const outSuggestionResults) const {}
     37 
     38     AK_FORCE_INLINE float getAdjustedLanguageWeight(DicTraverseSession *const traverseSession,
     39             DicNode *const terminals, const int size) const {
     40         return 1.0f;
     41     }
     42 
     43     AK_FORCE_INLINE int calculateFinalScore(const float compoundDistance, const int inputSize,
     44             const ErrorTypeUtils::ErrorType containedErrorTypes, const bool forceCommit,
     45             const bool boostExactMatches) const {
     46         const float maxDistance = ScoringParams::DISTANCE_WEIGHT_LANGUAGE
     47                 + static_cast<float>(inputSize) * ScoringParams::TYPING_MAX_OUTPUT_SCORE_PER_INPUT;
     48         float score = ScoringParams::TYPING_BASE_OUTPUT_SCORE - compoundDistance / maxDistance;
     49         if (forceCommit) {
     50             score += ScoringParams::AUTOCORRECT_OUTPUT_THRESHOLD;
     51         }
     52         if (boostExactMatches && ErrorTypeUtils::isExactMatch(containedErrorTypes)) {
     53             score += ScoringParams::EXACT_MATCH_PROMOTION;
     54             if ((ErrorTypeUtils::MATCH_WITH_CASE_ERROR & containedErrorTypes) != 0) {
     55                 score -= ScoringParams::CASE_ERROR_PENALTY_FOR_EXACT_MATCH;
     56             }
     57             if ((ErrorTypeUtils::MATCH_WITH_ACCENT_ERROR & containedErrorTypes) != 0) {
     58                 score -= ScoringParams::ACCENT_ERROR_PENALTY_FOR_EXACT_MATCH;
     59             }
     60             if ((ErrorTypeUtils::MATCH_WITH_DIGRAPH & containedErrorTypes) != 0) {
     61                 score -= ScoringParams::DIGRAPH_PENALTY_FOR_EXACT_MATCH;
     62             }
     63         }
     64         return static_cast<int>(score * SUGGEST_INTERFACE_OUTPUT_SCALE);
     65     }
     66 
     67     AK_FORCE_INLINE float getDoubleLetterDemotionDistanceCost(
     68             const DicNode *const terminalDicNode) const {
     69         return 0.0f;
     70     }
     71 
     72     AK_FORCE_INLINE bool autoCorrectsToMultiWordSuggestionIfTop() const {
     73         return true;
     74     }
     75 
     76     AK_FORCE_INLINE bool sameAsTyped(const DicTraverseSession *const traverseSession,
     77             const DicNode *const dicNode) const {
     78         return traverseSession->getProximityInfoState(0)->sameAsTyped(
     79                 dicNode->getOutputWordBuf(), dicNode->getNodeCodePointCount());
     80     }
     81 
     82  private:
     83     DISALLOW_COPY_AND_ASSIGN(TypingScoring);
     84     static const TypingScoring sInstance;
     85 
     86     TypingScoring() {}
     87     ~TypingScoring() {}
     88 };
     89 } // namespace latinime
     90 #endif // LATINIME_TYPING_SCORING_H
     91