src/include/tsearch/dicts/regis.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * regis.h
   4  *
   5  * Declarations for for fast regex subset, used by ISpell
   6  *
   7  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   8  *
   9  * $PostgreSQL$
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13
  14 #ifndef __REGIS_H__
  15 #define __REGIS_H__
  16
  17 typedef struct RegisNode
  18 {
  19         uint32
  20                                 type:2,
  21                                 len:16,
  22                                 unused:14;
  23         struct RegisNode *next;
  24         unsigned char data[1];
  25 } RegisNode;
  26
  27 #define  RNHDRSZ        (offsetof(RegisNode,data))
  28
  29 #define RSF_ONEOF       1
  30 #define RSF_NONEOF      2
  31
  32 typedef struct Regis
  33 {
  34         RegisNode  *node;
  35         uint32
  36                                 issuffix:1,
  37                                 nchar:16,
  38                                 unused:15;
  39 } Regis;
  40
  41 bool            RS_isRegis(const char *str);
  42
  43 void            RS_compile(Regis *r, bool issuffix, const char *str);
  44 void            RS_free(Regis *r);
  45
  46 /*returns true if matches */
  47 bool            RS_execute(Regis *r, char *str);
  48
  49 #endif