Add spellcheck and word suggestion to the prediction service

third_party/prediction/suggest/policyimpl/dictionary/utils/sparse_table.h

+/*
+ * 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_SPARSE_TABLE_H
+#define LATINIME_SPARSE_TABLE_H
+
+#include <cstdint>
+
+#include "third_party/prediction/defines.h"
+#include "third_party/prediction/suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
+
+namespace latinime {
+
+// Note that there is a corresponding implementation in SparseTable.java.
+// TODO: Support multiple content buffers.
+class SparseTable {
+ public:
+  SparseTable(BufferWithExtendableBuffer* const indexTableBuffer,
+              BufferWithExtendableBuffer* const contentTableBuffer,
+              const int blockSize,
+              const int dataSize)
+      : mIndexTableBuffer(indexTableBuffer),
+        mContentTableBuffer(contentTableBuffer),
+        mBlockSize(blockSize),
+        mDataSize(dataSize) {}
+
+  bool contains(const int id) const;
+
+  uint32_t get(const int id) const;
+
+  bool set(const int id, const uint32_t value);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(SparseTable);
+
+  int getIndexFromContentTablePos(const int contentTablePos) const;
+
+  int getPosInIndexTable(const int id) const;
+
+  int getPosInContentTable(const int id, const int index) const;
+
+  static const int NOT_EXIST;
+  static const int INDEX_SIZE;
+
+  BufferWithExtendableBuffer* const mIndexTableBuffer;
+  BufferWithExtendableBuffer* const mContentTableBuffer;
+  const int mBlockSize;
+  const int mDataSize;
+};
+}  // namespace latinime
+#endif /* LATINIME_SPARSE_TABLE_H */