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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
commit | a175314c3e5827eb193872241446f2f8f5c9d33c (patch) | |
tree | cd3d60ca99ae00829c52a6ca79150a5b6e62528b /sql/sql_digest_stream.h | |
parent | Initial commit. (diff) | |
download | mariadb-10.5-9e4947182e0b875da38088fdd168e775f473b8ad.tar.xz mariadb-10.5-9e4947182e0b875da38088fdd168e775f473b8ad.zip |
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sql/sql_digest_stream.h')
-rw-r--r-- | sql/sql_digest_stream.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/sql/sql_digest_stream.h b/sql/sql_digest_stream.h new file mode 100644 index 00000000..75e534e8 --- /dev/null +++ b/sql/sql_digest_stream.h @@ -0,0 +1,51 @@ +/* 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 + |