Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/policyimpl/typing/typing_scoring.h

Index: third_party/android_prediction/suggest/policyimpl/typing/typing_scoring.h
diff --git a/third_party/android_prediction/suggest/policyimpl/typing/typing_scoring.h b/third_party/android_prediction/suggest/policyimpl/typing/typing_scoring.h
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index 0000000000000000000000000000000000000000..1251011071556595f9beccc381fc28c6a2a0abf0
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+++ b/third_party/android_prediction/suggest/policyimpl/typing/typing_scoring.h
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+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LATINIME_TYPING_SCORING_H
+#define LATINIME_TYPING_SCORING_H
+
+#include "third_party/android_prediction/defines.h"
+#include "third_party/android_prediction/suggest/core/dictionary/error_type_utils.h"
+#include "third_party/android_prediction/suggest/core/policy/scoring.h"
+#include "third_party/android_prediction/suggest/core/session/dic_traverse_session.h"
+#include "third_party/android_prediction/suggest/policyimpl/typing/scoring_params.h"
+
+namespace latinime {
+
+class DicNode;
+class DicTraverseSession;
+
+class TypingScoring : public Scoring {
+ public:
+    static const TypingScoring *getInstance() { return &sInstance; }
+
+    AK_FORCE_INLINE void getMostProbableString(const DicTraverseSession *const traverseSession,
+            const float languageWeight, SuggestionResults *const outSuggestionResults) const {}
+
+    AK_FORCE_INLINE float getAdjustedLanguageWeight(DicTraverseSession *const traverseSession,
+            DicNode *const terminals, const int size) const {
+        return 1.0f;
+    }
+
+    AK_FORCE_INLINE int calculateFinalScore(const float compoundDistance, const int inputSize,
+            const ErrorTypeUtils::ErrorType containedErrorTypes, const bool forceCommit,
+            const bool boostExactMatches) const {
+        const float maxDistance = ScoringParams::DISTANCE_WEIGHT_LANGUAGE
+                + static_cast<float>(inputSize) * ScoringParams::TYPING_MAX_OUTPUT_SCORE_PER_INPUT;
+        float score = ScoringParams::TYPING_BASE_OUTPUT_SCORE - compoundDistance / maxDistance;
+        if (forceCommit) {
+            score += ScoringParams::AUTOCORRECT_OUTPUT_THRESHOLD;
+        }
+        if (boostExactMatches && ErrorTypeUtils::isExactMatch(containedErrorTypes)) {
+            score += ScoringParams::EXACT_MATCH_PROMOTION;
+            if ((ErrorTypeUtils::MATCH_WITH_CASE_ERROR & containedErrorTypes) != 0) {
+                score -= ScoringParams::CASE_ERROR_PENALTY_FOR_EXACT_MATCH;
+            }
+            if ((ErrorTypeUtils::MATCH_WITH_ACCENT_ERROR & containedErrorTypes) != 0) {
+                score -= ScoringParams::ACCENT_ERROR_PENALTY_FOR_EXACT_MATCH;
+            }
+            if ((ErrorTypeUtils::MATCH_WITH_DIGRAPH & containedErrorTypes) != 0) {
+                score -= ScoringParams::DIGRAPH_PENALTY_FOR_EXACT_MATCH;
+            }
+        }
+        return static_cast<int>(score * SUGGEST_INTERFACE_OUTPUT_SCALE);
+    }
+
+    AK_FORCE_INLINE float getDoubleLetterDemotionDistanceCost(
+            const DicNode *const terminalDicNode) const {
+        return 0.0f;
+    }
+
+    AK_FORCE_INLINE bool autoCorrectsToMultiWordSuggestionIfTop() const {
+        return true;
+    }
+
+    AK_FORCE_INLINE bool sameAsTyped(const DicTraverseSession *const traverseSession,
+            const DicNode *const dicNode) const {
+        return traverseSession->getProximityInfoState(0)->sameAsTyped(
+                dicNode->getOutputWordBuf(), dicNode->getNodeCodePointCount());
+    }
+
+ private:
+    DISALLOW_COPY_AND_ASSIGN(TypingScoring);
+    static const TypingScoring sInstance;
+
+    TypingScoring() {}
+    ~TypingScoring() {}
+};
+} // namespace latinime
+#endif // LATINIME_TYPING_SCORING_H