Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/content/sparse_table_dict_content.h

Index: third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/content/sparse_table_dict_content.h
diff --git a/third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/content/sparse_table_dict_content.h b/third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/content/sparse_table_dict_content.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_SPARSE_TABLE_DICT_CONTENT_H
+#define LATINIME_SPARSE_TABLE_DICT_CONTENT_H
+
+#include <cstdint>
+#include <cstdio>
+
+#include "third_party/android_prediction/defines.h"
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/ver4_dict_constants.h"
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/utils/sparse_table.h"
+#include "third_party/android_prediction/utils/byte_array_view.h"
+
+namespace latinime {
+
+// TODO: Support multiple contents.
+class SparseTableDictContent {
+ public:
+    AK_FORCE_INLINE SparseTableDictContent(uint8_t *const *buffers, const int *bufferSizes,
+            const int sparseTableBlockSize, const int sparseTableDataSize)
+            : mExpandableLookupTableBuffer(
+                      ReadWriteByteArrayView(buffers[LOOKUP_TABLE_BUFFER_INDEX],
+                              bufferSizes[LOOKUP_TABLE_BUFFER_INDEX]),
+                      BufferWithExtendableBuffer::DEFAULT_MAX_ADDITIONAL_BUFFER_SIZE),
+              mExpandableAddressTableBuffer(
+                      ReadWriteByteArrayView(buffers[ADDRESS_TABLE_BUFFER_INDEX],
+                              bufferSizes[ADDRESS_TABLE_BUFFER_INDEX]),
+                      BufferWithExtendableBuffer::DEFAULT_MAX_ADDITIONAL_BUFFER_SIZE),
+              mExpandableContentBuffer(
+                      ReadWriteByteArrayView(buffers[CONTENT_BUFFER_INDEX],
+                              bufferSizes[CONTENT_BUFFER_INDEX]),
+                      BufferWithExtendableBuffer::DEFAULT_MAX_ADDITIONAL_BUFFER_SIZE),
+              mAddressLookupTable(&mExpandableLookupTableBuffer, &mExpandableAddressTableBuffer,
+                      sparseTableBlockSize, sparseTableDataSize) {}
+
+    SparseTableDictContent(const int sparseTableBlockSize, const int sparseTableDataSize)
+            : mExpandableLookupTableBuffer(Ver4DictConstants::MAX_DICTIONARY_SIZE),
+              mExpandableAddressTableBuffer(Ver4DictConstants::MAX_DICTIONARY_SIZE),
+              mExpandableContentBuffer(Ver4DictConstants::MAX_DICTIONARY_SIZE),
+              mAddressLookupTable(&mExpandableLookupTableBuffer, &mExpandableAddressTableBuffer,
+                      sparseTableBlockSize, sparseTableDataSize) {}
+
+    virtual ~SparseTableDictContent() {}
+
+    bool isNearSizeLimit() const {
+        return mExpandableLookupTableBuffer.isNearSizeLimit()
+                || mExpandableAddressTableBuffer.isNearSizeLimit()
+                || mExpandableContentBuffer.isNearSizeLimit();
+    }
+
+ protected:
+    SparseTable *getUpdatableAddressLookupTable() {
+        return &mAddressLookupTable;
+    }
+
+    const SparseTable *getAddressLookupTable() const {
+        return &mAddressLookupTable;
+    }
+
+    BufferWithExtendableBuffer *getWritableContentBuffer() {
+        return &mExpandableContentBuffer;
+    }
+
+    const BufferWithExtendableBuffer *getContentBuffer() const {
+        return &mExpandableContentBuffer;
+    }
+
+    bool flush(FILE *const file) const;
+
+ private:
+    DISALLOW_IMPLICIT_CONSTRUCTORS(SparseTableDictContent);
+
+    static const int LOOKUP_TABLE_BUFFER_INDEX;
+    static const int ADDRESS_TABLE_BUFFER_INDEX;
+    static const int CONTENT_BUFFER_INDEX;
+
+    BufferWithExtendableBuffer mExpandableLookupTableBuffer;
+    BufferWithExtendableBuffer mExpandableAddressTableBuffer;
+    BufferWithExtendableBuffer mExpandableContentBuffer;
+    SparseTable mAddressLookupTable;
+};
+} // namespace latinime
+#endif /* LATINIME_SPARSE_TABLE_DICT_CONTENT_H */