name : sql_digest_stream.h /* Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */ #ifndef SQL_DIGEST_STREAM_H #define SQL_DIGEST_STREAM_H #include "sql_digest.h" /** State data storage for @c digest_start, @c digest_add_token. This structure extends the @c sql_digest_storage structure with temporary state used only during parsing. */ struct sql_digest_state { /** Index, in the digest token array, of the last identifier seen. Reduce rules used in the digest computation can not apply to tokens seen before an identifier. @sa digest_add_token */ int m_last_id_index; sql_digest_storage m_digest_storage; inline void reset(unsigned char *token_array, uint length) { m_last_id_index= 0; m_digest_storage.reset(token_array, length); } inline bool is_empty() { return m_digest_storage.is_empty(); } }; typedef struct sql_digest_state sql_digest_state; #endif