#ifndef __lwre_h_
#define __lwre_h_

#include <setjmp.h>
#include <ejdb2/iowow/basedefs.h>

struct RE_Insn;

struct RE_Compiled {
  int size;
  struct RE_Insn *first;
  struct RE_Insn *last;
};

#define RE_COMPILED_INITIALISER { 0, 0, 0 }

struct re {
  const char *expression;
  const char *position;
  jmp_buf    *error_env;
  int   error_code;
  char *error_message;
  struct RE_Compiled code;
  char **matches;
  int    nmatches;
#ifdef RE_EXTRA_MEMBERS
  RE_MEMBERS
#endif
};

#define RE_INITIALISER(EXPR) { (EXPR), 0, 0, 0, 0, RE_COMPILED_INITIALISER, 0, 0 }

#define RE_ERROR_NONE     0
#define RE_ERROR_NOMATCH  -1
#define RE_ERROR_NOMEM    -2
#define RE_ERROR_CHARSET  -3
#define RE_ERROR_SUBEXP   -4
#define RE_ERROR_SUBMATCH -5
#define RE_ERROR_ENGINE   -6

IW_EXPORT struct re *lwre_new(const char *expression);
IW_EXPORT int lwre_match(struct re *re, char *input);
IW_EXPORT void lwre_release(struct re *re);
IW_EXPORT void lwre_reset(struct re *re, const char *expression);
IW_EXPORT void lwre_free(struct re *re);
IW_EXPORT char *lwre_escape(char *string, int liberal);

#endif /* __lwre_h_ */