Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/bigram/bigram_list_read_write_utils.h

Index: third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/bigram/bigram_list_read_write_utils.h
diff --git a/third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/bigram/bigram_list_read_write_utils.h b/third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/bigram/bigram_list_read_write_utils.h
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index 0000000000000000000000000000000000000000..3db2c3d679d329a9290136c1d0c1706459b5dce0
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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_BIGRAM_LIST_READ_WRITE_UTILS_H
+#define LATINIME_BIGRAM_LIST_READ_WRITE_UTILS_H
+
+#include <cstdint>
+#include <cstdlib>
+
+#include "third_party/android_prediction/defines.h"
+
+namespace latinime {
+
+class BufferWithExtendableBuffer;
+
+class BigramListReadWriteUtils {
+public:
+   typedef uint8_t BigramFlags;
+
+   static bool getBigramEntryPropertiesAndAdvancePosition(const uint8_t *const bigramsBuf,
+           const int bufSize, BigramFlags *const outBigramFlags, int *const outTargetPtNodePos,
+           int *const bigramEntryPos);
+
+   static AK_FORCE_INLINE int getProbabilityFromFlags(const BigramFlags flags) {
+       return flags & MASK_ATTRIBUTE_PROBABILITY;
+   }
+
+   static AK_FORCE_INLINE bool hasNext(const BigramFlags flags) {
+       return (flags & FLAG_ATTRIBUTE_HAS_NEXT) != 0;
+   }
+
+   // Bigrams reading methods
+   static bool skipExistingBigrams(const uint8_t *const bigramsBuf, const int bufSize,
+           int *const bigramListPos);
+
+private:
+   DISALLOW_IMPLICIT_CONSTRUCTORS(BigramListReadWriteUtils);
+
+   static const BigramFlags MASK_ATTRIBUTE_ADDRESS_TYPE;
+   static const BigramFlags FLAG_ATTRIBUTE_ADDRESS_TYPE_ONEBYTE;
+   static const BigramFlags FLAG_ATTRIBUTE_ADDRESS_TYPE_TWOBYTES;
+   static const BigramFlags FLAG_ATTRIBUTE_ADDRESS_TYPE_THREEBYTES;
+   static const BigramFlags FLAG_ATTRIBUTE_OFFSET_NEGATIVE;
+   static const BigramFlags FLAG_ATTRIBUTE_HAS_NEXT;
+   static const BigramFlags MASK_ATTRIBUTE_PROBABILITY;
+
+   static AK_FORCE_INLINE bool isOffsetNegative(const BigramFlags flags) {
+       return (flags & FLAG_ATTRIBUTE_OFFSET_NEGATIVE) != 0;
+   }
+
+   static int getBigramAddressAndAdvancePosition(const uint8_t *const bigramsBuf,
+           const BigramFlags flags, int *const pos);
+};
+} // namespace latinime
+#endif // LATINIME_BIGRAM_LIST_READ_WRITE_UTILS_H