2025-03-05 14:31:08

sql/sql_lex_hash.h

@@ -0,0 +1,51 @@
+/*
+   Copyright (c) 2015, 2024, Oracle and/or its affiliates.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License, version 2.0,
+   as published by the Free Software Foundation.
+
+   This program is designed to work with certain software (including
+   but not limited to OpenSSL) that is licensed under separate terms,
+   as designated in a particular file or component or in included license
+   documentation.  The authors of MySQL hereby grant you an additional
+   permission to link the program and your derivative works with the
+   separately licensed software that they have either included with
+   the program or referenced in the documentation.
+
+   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, version 2.0, 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+/*
+  Hash accessor function for lexical scanners:
+  * sql_lex.h, sql_lex.cc,
+  * sql_lex_hints.h, sql_lex_hints.cc.
+*/
+
+#ifndef SQL_LEX_HASH_INCLUDED
+#define SQL_LEX_HASH_INCLUDED
+
+class Lex_hash {
+ private:
+  const unsigned char *hash_map;
+  const unsigned int entry_max_len;
+
+ public:
+  Lex_hash(const unsigned char *hash_map_arg, unsigned int entry_max_len_arg)
+      : hash_map(hash_map_arg), entry_max_len(entry_max_len_arg) {}
+
+  const struct SYMBOL *get_hash_symbol(const char *s, unsigned int len) const;
+
+  static const Lex_hash sql_keywords;
+  static const Lex_hash sql_keywords_and_funcs;
+
+  static const Lex_hash hint_keywords;
+};
+
+#endif /* SQL_LEX_HASH_INCLUDED */