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   1 /* -*-c-*-
   2  *
   3  * $Id: qdparse.h,v 1.2 2004/04/08 01:36:15 mdw Exp $
   4  *
   5  * Quick-and-dirty parser
   6  *
   7  * (c) 2004 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Catacomb.
  13  *
  14  * Catacomb is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * Catacomb is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with Catacomb; if not, write to the Free
  26  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  27  * MA 02111-1307, USA.
  28  */
  29
  30 #ifndef CATACOMB_QDPARSE_H
  31 #define CATACOMB_QDPARSE_H
  32
  33 #ifdef __cplusplus
  34   extern "C" {
  35 #endif
  36
  37 /*----- Header files ------------------------------------------------------*/
  38
  39 #ifndef CATACOMB_MP_H
  40 #  include "mp.h"
  41 #endif
  42
  43 /*----- Data structures ---------------------------------------------------*/
  44
  45 typedef struct qd_parse {
  46   const char *p;                        /* Where we are right now */
  47   const char *e;                        /* Error string (output) */
  48 } qd_parse;
  49
  50 /*----- Functions provided ------------------------------------------------*/
  51
  52 /* --- @qd_skipspc@ --- *
  53  *
  54  * Arguments:   @qd_parse *qd@ = context
  55  *
  56  * Returns:     ---
  57  *
  58  * Use:         Skips spaces in the string.  No errors.
  59  */
  60
  61 extern void qd_skipspc(qd_parse */*qd*/);
  62
  63 /* --- @qd_delim@ --- *
  64  *
  65  * Arguments:   @qd_parse *qd@ = context
  66  *              @int ch@ = character to compare with
  67  *
  68  * Returns:     Nonzero if it was, zero if it wasn't.
  69  *
  70  * Use:         Checks the next (non-whitespace) character is what we
  71  *              expect.  If it is, the character is eaten; otherwise it's no
  72  *              big deal.
  73  */
  74
  75 extern int qd_delim(qd_parse */*qd*/, int /*ch*/);
  76
  77 /* --- @qd_enum@ --- *
  78  *
  79  * Arguments:   @qd_parse *qd@ = context
  80  *              @const char *e@ = list of enum strings, space separated
  81  *
  82  * Returns:     Index of the string matched, or @-1@.
  83  *
  84  * Use:         Matches a keyword.
  85  */
  86
  87 extern int qd_enum(qd_parse */*qd*/, const char */*e*/);
  88
  89 /* --- @qd_getmp@ --- *
  90  *
  91  * Arguments:   @qd_parse *qd@ = context
  92  *
  93  * Returns:     The integer extracted, or null.
  94  *
  95  * Use:         Parses a multiprecision integer from a string.
  96  */
  97
  98 extern mp *qd_getmp(qd_parse */*qd*/);
  99
 100 /* --- @qd_eofp@ --- *
 101  *
 102  * Arguments:   @qd_parse *qd@ = context
 103  *
 104  * Returns:     Nonzero if at EOF, zero otherwise.
 105  */
 106
 107 extern int qd_eofp(qd_parse */*qd*/);
 108
 109 /*----- That's all, folks -------------------------------------------------*/
 110
 111 #ifdef __cplusplus
 112   }
 113 #endif
 114
 115 #endif