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// 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
#pragma once
#include <stdbool.h>
#include <stdint.h>
#include "nvim/pos_defs.h"
#include "nvim/types_defs.h"
enum {
/// 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".
NSUBEXP = 10,
};
typedef struct regengine regengine_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];
colnr_T rmm_matchcol; ///< match start without "\zs"
int rmm_ic;
colnr_T rmm_maxcol; ///< when not zero: maximum column
} regmmatch_T;
/// Used for "magic_overruled".
typedef enum {
OPTION_MAGIC_NOT_SET, ///< p_magic not overruled
OPTION_MAGIC_ON, ///< magic on inside regexp
OPTION_MAGIC_OFF, ///< magic off inside regexp
} optmagic_T;
/// Magicness of a pattern, used by regexp code.
/// The order and values matter:
/// magic <= MAGIC_OFF includes MAGIC_NONE
/// magic >= MAGIC_ON includes MAGIC_ALL
typedef enum {
MAGIC_NONE = 1, ///< "\V" very unmagic
MAGIC_OFF = 2, ///< "\M" or 'magic' off
MAGIC_ON = 3, ///< "\m" or 'magic'
MAGIC_ALL = 4, ///< "\v" very magic
} magic_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 *startp[NSUBEXP];
char *endp[NSUBEXP];
colnr_T rm_matchcol; ///< match start without "\zs"
bool rm_ic;
} regmatch_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 {
int16_t refcnt;
uint8_t *matches[NSUBEXP];
} reg_extmatch_T;
/// Flags used by vim_regsub() and vim_regsub_both()
enum {
REGSUB_COPY = 1,
REGSUB_MAGIC = 2,
REGSUB_BACKSLASH = 4,
};
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