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/* vi:set ts=8 sts=4 sw=4:
*
* NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE
*
* This is NOT the original regular expression code as written by Henry
* Spencer. This code has been modified specifically for use with Vim, and
* should not be used apart from compiling Vim. If you want a good regular
* expression library, get the original code.
*
* NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE
*/
#ifndef _REGEXP_H
#define _REGEXP_H
/*
* The number of sub-matches is limited to 10.
* The first one (index 0) is the whole match, referenced with "\0".
* The second one (index 1) is the first sub-match, referenced with "\1".
* This goes up to the tenth (index 9), referenced with "\9".
*/
#define NSUBEXP 10
/*
* Structure returned by vim_regcomp() to pass on to vim_regexec().
* These fields are only to be used in regexp.c!
* See regep.c for an explanation.
*/
typedef struct
{
int regstart;
char_u reganch;
char_u *regmust;
int regmlen;
unsigned regflags;
char_u reghasz;
char_u program[1]; /* actually longer.. */
} regprog_T;
/*
* Structure to be used for single-line matching.
* Sub-match "no" starts at "startp[no]" and ends just before "endp[no]".
* When there is no match, the pointer is NULL.
*/
typedef struct
{
regprog_T *regprog;
char_u *startp[NSUBEXP];
char_u *endp[NSUBEXP];
int rm_ic;
} regmatch_T;
/*
* Structure to be used for multi-line matching.
* Sub-match "no" starts in line "startpos[no].lnum" column "startpos[no].col"
* and ends in line "endpos[no].lnum" just before column "endpos[no].col".
* The line numbers are relative to the first line, thus startpos[0].lnum is
* always 0.
* When there is no match, the line number is -1.
*/
typedef struct
{
regprog_T *regprog;
lpos_T startpos[NSUBEXP];
lpos_T endpos[NSUBEXP];
int rmm_ic;
colnr_T rmm_maxcol; /* when not zero: maximum column */
} regmmatch_T;
/*
* Structure used to store external references: "\z\(\)" to "\z\1".
* Use a reference count to avoid the need to copy this around. When it goes
* from 1 to zero the matches need to be freed.
*/
typedef struct
{
short refcnt;
char_u *matches[NSUBEXP];
} reg_extmatch_T;
#endif /* _REGEXP_H */
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