| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef MOZC_STORAGE_LOUDS_BIT_STREAM_H_ |
| #define MOZC_STORAGE_LOUDS_BIT_STREAM_H_ |
| |
| #include <string> |
| |
| #include "base/port.h" |
| |
| namespace mozc { |
| namespace storage { |
| namespace louds { |
| |
| // Stream taking 'bits', especially designed for building a LOUDS trie. |
| class BitStream { |
| public: |
| BitStream(); |
| |
| const string &image() const { return image_; } |
| size_t num_bits() const { return num_bits_; } |
| size_t ByteSize() const { return image_.length(); } |
| |
| void PushBit(int bit); |
| |
| // Fills the padding (0-bit) until the size is aligned to 32bit boundary. |
| void FillPadding32(); |
| |
| private: |
| string image_; |
| size_t num_bits_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BitStream); |
| }; |
| |
| } // namespace louds |
| } // namespace storage |
| } // namespace mozc |
| |
| #endif // MOZC_STORAGE_LOUDS_BIT_STREAM_H_ |