Mercurial > vim
view src/regexp.h @ 6497:749fc929da45 v7.4.576
updated for version 7.4.576
Problem: Redrawing problem with 'relativenumber' and 'linebreak'.
Solution: Temporarily reset 'linebreak' and restore it in more places.
(Christian Brabandt)
author | Bram Moolenaar <bram@vim.org> |
---|---|
date | Wed, 14 Jan 2015 17:52:30 +0100 |
parents | adfbffe1e642 |
children | 4aead6a9b7a9 |
line wrap: on
line source
/* 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 /* * In the NFA engine: how many braces are allowed. * TODO(RE): Use dynamic memory allocation instead of static, like here */ #define NFA_MAX_BRACES 20 /* * In the NFA engine: how many states are allowed */ #define NFA_MAX_STATES 100000 #define NFA_TOO_EXPENSIVE -1 /* Which regexp engine to use? Needed for vim_regcomp(). * Must match with 'regexpengine'. */ #define AUTOMATIC_ENGINE 0 #define BACKTRACKING_ENGINE 1 #define NFA_ENGINE 2 typedef struct regengine regengine_T; /* * Structure returned by vim_regcomp() to pass on to vim_regexec(). * This is the general structure. For the actual matcher, two specific * structures are used. See code below. */ typedef struct regprog { regengine_T *engine; unsigned regflags; unsigned re_engine; /* automatic, backtracking or nfa engine */ unsigned re_flags; /* second argument for vim_regcomp() */ } regprog_T; /* * Structure used by the back track matcher. * These fields are only to be used in regexp.c! * See regexp.c for an explanation. */ typedef struct { /* These four members implement regprog_T */ regengine_T *engine; unsigned regflags; unsigned re_engine; unsigned re_flags; /* second argument for vim_regcomp() */ int regstart; char_u reganch; char_u *regmust; int regmlen; #ifdef FEAT_SYN_HL char_u reghasz; #endif char_u program[1]; /* actually longer.. */ } bt_regprog_T; /* * Structure representing a NFA state. * A NFA state may have no outgoing edge, when it is a NFA_MATCH state. */ typedef struct nfa_state nfa_state_T; struct nfa_state { int c; nfa_state_T *out; nfa_state_T *out1; int id; int lastlist[2]; /* 0: normal, 1: recursive */ int val; }; /* * Structure used by the NFA matcher. */ typedef struct { /* These three members implement regprog_T */ regengine_T *engine; unsigned regflags; unsigned re_engine; unsigned re_flags; /* second argument for vim_regcomp() */ nfa_state_T *start; /* points into state[] */ int reganch; /* pattern starts with ^ */ int regstart; /* char at start of pattern */ char_u *match_text; /* plain text to match with */ int has_zend; /* pattern contains \ze */ int has_backref; /* pattern contains \1 .. \9 */ #ifdef FEAT_SYN_HL int reghasz; #endif char_u *pattern; int nsubexp; /* number of () */ int nstate; nfa_state_T state[1]; /* actually longer.. */ } nfa_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; struct regengine { regprog_T *(*regcomp)(char_u*, int); void (*regfree)(regprog_T *); int (*regexec_nl)(regmatch_T*, char_u*, colnr_T, int); long (*regexec_multi)(regmmatch_T*, win_T*, buf_T*, linenr_T, colnr_T, proftime_T*); char_u *expr; }; #endif /* _REGEXP_H */