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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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; either version 2 of the License, or
(at your option) any later version.
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, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* YACC and LEX Definitions */
/* These may not be declared yet */
class Table_ident;
class sql_exchange;
class LEX_COLUMN;
// The following hack is needed because mysql_yacc.cc does not define
// YYSTYPE before including this file
#ifdef MYSQL_YACC
#define LEX_YYSTYPE void *
#else
#include "lex_symbol.h"
#include "sql_yacc.h"
#define LEX_YYSTYPE YYSTYPE *
#endif
enum enum_sql_command {
SQLCOM_SELECT, SQLCOM_CREATE_TABLE, SQLCOM_CREATE_INDEX, SQLCOM_ALTER_TABLE,
SQLCOM_UPDATE, SQLCOM_INSERT, SQLCOM_INSERT_SELECT,
SQLCOM_DELETE, SQLCOM_TRUNCATE, SQLCOM_DROP_TABLE, SQLCOM_DROP_INDEX,
SQLCOM_SHOW_DATABASES, SQLCOM_SHOW_TABLES, SQLCOM_SHOW_FIELDS,
SQLCOM_SHOW_KEYS, SQLCOM_SHOW_VARIABLES, SQLCOM_SHOW_LOGS, SQLCOM_SHOW_STATUS,
SQLCOM_SHOW_PROCESSLIST, SQLCOM_SHOW_MASTER_STAT, SQLCOM_SHOW_SLAVE_STAT,
SQLCOM_SHOW_GRANTS, SQLCOM_SHOW_CREATE,
SQLCOM_LOAD,SQLCOM_SET_OPTION,SQLCOM_LOCK_TABLES,SQLCOM_UNLOCK_TABLES,
SQLCOM_GRANT, SQLCOM_CHANGE_DB, SQLCOM_CREATE_DB, SQLCOM_DROP_DB,
SQLCOM_REPAIR, SQLCOM_REPLACE, SQLCOM_REPLACE_SELECT,
SQLCOM_CREATE_FUNCTION, SQLCOM_DROP_FUNCTION,
SQLCOM_REVOKE,SQLCOM_OPTIMIZE, SQLCOM_CHECK,
SQLCOM_FLUSH, SQLCOM_KILL, SQLCOM_ANALYZE,
SQLCOM_ROLLBACK, SQLCOM_COMMIT, SQLCOM_SLAVE_START, SQLCOM_SLAVE_STOP,
SQLCOM_BEGIN, SQLCOM_LOAD_MASTER_TABLE, SQLCOM_CHANGE_MASTER,
SQLCOM_RENAME_TABLE, SQLCOM_BACKUP_TABLE, SQLCOM_RESTORE_TABLE,
SQLCOM_RESET, SQLCOM_PURGE, SQLCOM_SHOW_BINLOGS,
SQLCOM_SHOW_OPEN_TABLES, SQLCOM_LOAD_MASTER_DATA,
SQLCOM_HA_OPEN, SQLCOM_HA_CLOSE, SQLCOM_HA_READ,
SQLCOM_SHOW_SLAVE_HOSTS, SQLCOM_DELETE_MULTI, SQLCOM_MULTI_UPDATE,
SQLCOM_SHOW_BINLOG_EVENTS, SQLCOM_SHOW_NEW_MASTER, SQLCOM_DO,
SQLCOM_EMPTY_QUERY,
SQLCOM_END
};
enum lex_states { STATE_START, STATE_CHAR, STATE_IDENT,
STATE_IDENT_SEP,
STATE_IDENT_START,
STATE_FOUND_IDENT,
STATE_SIGNED_NUMBER,
STATE_REAL,
STATE_HEX_NUMBER,
STATE_CMP_OP,
STATE_LONG_CMP_OP,
STATE_STRING,
STATE_COMMENT,
STATE_END,
STATE_OPERATOR_OR_IDENT,
STATE_NUMBER_IDENT,
STATE_INT_OR_REAL,
STATE_REAL_OR_POINT,
STATE_BOOL,
STATE_EOL,
STATE_ESCAPE,
STATE_LONG_COMMENT,
STATE_END_LONG_COMMENT,
STATE_COLON,
STATE_SET_VAR,
STATE_USER_END,
STATE_HOSTNAME,
STATE_SKIP,
STATE_USER_VARIABLE_DELIMITER
};
typedef List<Item> List_item;
typedef struct st_lex_master_info
{
char* host, *user, *password,*log_file_name;
uint port, connect_retry;
ulonglong pos;
ulong server_id;
char* relay_log_name;
ulong relay_log_pos;
} LEX_MASTER_INFO;
enum sub_select_type {UNSPECIFIED_TYPE,UNION_TYPE, INTERSECT_TYPE, EXCEPT_TYPE, NOT_A_SELECT};
/* The state of the lex parsing for selects */
typedef struct st_select_lex {
enum sub_select_type linkage;
char *db,*db1,*table1,*db2,*table2; /* For outer join using .. */
Item *where,*having;
ha_rows select_limit,offset_limit;
ulong options;
List<List_item> expr_list;
List<List_item> when_list;
SQL_LIST order_list,table_list,group_list;
List<Item> item_list;
List<String> interval_list,use_index, *use_index_ptr,
ignore_index, *ignore_index_ptr;
List<Item_func_match> ftfunc_list;
uint in_sum_expr, sort_default;
bool create_refs, braces;
st_select_lex *next;
} SELECT_LEX;
class Set_option :public Sql_alloc {
public:
const char *name;
Item *item;
uint name_length;
bool type; /* 1 if global */
Set_option(bool par_type, const char *par_name, uint length,
Item *par_item)
:name(par_name), item(par_item), name_length(length), type(par_type) {}
};
/* The state of the lex parsing. This is saved in the THD struct */
typedef struct st_lex {
uint yylineno,yytoklen; /* Simulate lex */
LEX_YYSTYPE yylval;
SELECT_LEX select_lex, *select;
uchar *ptr,*tok_start,*tok_end,*end_of_query;
char *length,*dec,*change,*name;
char *backup_dir; /* For RESTORE/BACKUP */
char* to_log; /* For PURGE MASTER LOGS TO */
char* x509_subject,*x509_issuer,*ssl_cipher;
enum SSL_type ssl_type; /* defined in violite.h */
String *wild;
sql_exchange *exchange;
List<key_part_spec> col_list;
List<Alter_drop> drop_list;
List<Alter_column> alter_list;
List<String> interval_list;
List<st_lex_user> users_list;
List<LEX_COLUMN> columns;
List<Key> key_list;
List<create_field> create_list;
List<Item> *insert_list,field_list,value_list;
List<List_item> many_values;
List<Set_option> option_list;
SQL_LIST proc_list, auxilliary_table_list;
TYPELIB *interval;
create_field *last_field;
Item *default_value;
CONVERT *convert_set;
LEX_USER *grant_user;
gptr yacc_yyss,yacc_yyvs;
THD *thd;
udf_func udf;
HA_CHECK_OPT check_opt; // check/repair options
HA_CREATE_INFO create_info;
LEX_MASTER_INFO mi; // used by CHANGE MASTER
USER_RESOURCES mqh;
ulong thread_id,type;
enum_sql_command sql_command;
enum lex_states next_state;
enum enum_duplicates duplicates;
enum enum_tx_isolation tx_isolation;
enum enum_ha_read_modes ha_read_mode;
enum ha_rkey_function ha_rkey_mode;
enum enum_enable_or_disable alter_keys_onoff;
uint grant,grant_tot_col,which_columns, union_option;
thr_lock_type lock_option;
bool drop_primary,drop_if_exists,local_file;
bool in_comment,ignore_space,verbose,simple_alter, option_type;
uint slave_thd_opt;
} LEX;
void lex_init(void);
void lex_free(void);
LEX *lex_start(THD *thd, uchar *buf,uint length);
void lex_end(LEX *lex);
extern pthread_key(LEX*,THR_LEX);
extern LEX_STRING tmp_table_alias;
#define current_lex (¤t_thd->lex)
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