capture_to_close.c

#include <time.h>
#include <setjmp.h>
#include <ctype.h>

#include "lapi.h"
#include "lauxlib.h"
#include "lcode.h"
#include "lctype.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "llex.h"
#include "llimits.h"
#include "lmem.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lopnames.h"
#include "lparser.h"
#include "lprefix.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "luaconf.h"
#include "lua.h"
#include "lualib.h"
#include "lundump.h"
#include "lvm.h"
#include "lzio.h"

typedef struct MatchState {
  const char *src_init;
  const char *src_end;
  const char *p_end;
  lua_State *L;
  int matchdepth;
  unsigned char level;
  struct {
    const char *init;
    ptrdiff_t len;
  } capture[32];
} MatchState;


extern int luaL_error(lua_State *, const char *, ...);

extern int capture_to_close (MatchState *ms) {
  int level = ms->level;
  for (level--; level>=0; level--)
    if (ms->capture[level].len == (-1)) return level;
  return luaL_error(ms->L, "invalid pattern capture");
}