code / bp

   1 //
   2 // match.h - Header file for BP virtual machine.
   3 //
   4 #pragma once
   5 
   6 #include <stdbool.h>
   7 #include <stdio.h>
   8 #include <sys/types.h>
   9 
  10 #include "pattern.h"
  11 
  12 //
  13 // Pattern matching result object
  14 //
  15 typedef struct bp_match_s bp_match_t;
  16 struct bp_match_s {
  17     // Where the match starts and ends (end is after the last character)
  18     const char *start, *end;
  19     bp_pat_t *pat;
  20     // Intrusive linked list node for garbage collection:
  21     struct {
  22         bp_match_t **home, *next;
  23     } gc;
  24     bp_match_t **children;
  25     bp_match_t *_children[3];
  26 };
  27 
  28 typedef void (*bp_errhand_t)(char **err_msg);
  29 
  30 __attribute__((nonnull)) void recycle_match(bp_match_t **at_m);
  31 size_t free_all_matches(void);
  32 size_t recycle_all_matches(void);
  33 bool next_match(bp_match_t **m, const char *start, const char *end, bp_pat_t *pat, bp_pat_t *defs, bp_pat_t *skip,
  34                 bool ignorecase);
  35 #define stop_matching(m) next_match(m, NULL, NULL, NULL, NULL, NULL, 0)
  36 bp_errhand_t bp_set_error_handler(bp_errhand_t handler);
  37 __attribute__((nonnull)) bp_match_t *get_numbered_capture(bp_match_t *m, int n);
  38 __attribute__((nonnull, pure)) bp_match_t *get_named_capture(bp_match_t *m, const char *name, ssize_t namelen);
  39 
  40 // vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0