gcc/m2/gm2-compiler/cflex.def

   1 (* cflex.def provides a Modula-2 definition module for C lexical analysis.
   2
   3 Copyright (C) 2003-2022 Free Software Foundation, Inc.
   4 Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
   5
   6 This file is part of GNU Modula-2.
   7
   8 GNU Modula-2 is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GNU Modula-2 is distributed in the hope that it will be useful, but
  14 WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Modula-2; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  *)
  21
  22 DEFINITION MODULE cflex ;
  23
  24 (*
  25     Title      : clex
  26     Author     : Gaius Mulley
  27     System     : GNU Modula-2
  28     Date       : Thu Jan 23 12:39:36 2003
  29     Revision   : $Version$
  30     Description: provides a Modula-2 definition module for C lexical analysis.
  31 *)
  32
  33 FROM SYSTEM IMPORT ADDRESS ;
  34 EXPORT QUALIFIED GetToken, AdvanceToken, CError, OpenSource, CloseSource, GetLineNo,
  35                  ParsingOn, SetSearchPath, AddTypeDef ;
  36
  37
  38 (*
  39    CloseSource - provided for semantic sugar
  40 *)
  41
  42 PROCEDURE CloseSource ;
  43
  44
  45 (*
  46    OpenSource - returns TRUE if file, s, can be opened and
  47                 all tokens are taken from this file.
  48 *)
  49
  50 PROCEDURE OpenSource (s: ADDRESS) : BOOLEAN ;
  51
  52
  53 (*
  54    GetToken - returns the ADDRESS of the next token.
  55 *)
  56
  57 PROCEDURE GetToken () : ADDRESS ;
  58
  59
  60 (*
  61    AdvanceToken - move onto the next token.
  62 *)
  63
  64 PROCEDURE AdvanceToken ;
  65
  66
  67 (*
  68    GetLineNo - returns the current line number.
  69 *)
  70
  71 PROCEDURE GetLineNo () : CARDINAL ;
  72
  73
  74 (*
  75    CError - displays the error message, s, after the code line and pointer
  76             to the erroneous token.
  77 *)
  78
  79 PROCEDURE CError (s: ADDRESS) ;
  80
  81
  82 (*
  83    ParsingOn - if t is FALSE then the lexical analysis will
  84                consume all lines except when a line is one of
  85                '#endif' or '#else' or '#if' or '#ifdef'
  86 *)
  87
  88 PROCEDURE ParsingOn (t: BOOLEAN) ;
  89
  90
  91 (*
  92    SetSearchPath - reassigns the search path to newPath.
  93 *)
  94
  95 PROCEDURE SetSearchPath (newPath: ADDRESS) ;
  96
  97
  98 (*
  99    AddTypeDef - adds the string, a, to the list of typedefs.
 100 *)
 101
 102 PROCEDURE AddTypeDef (a: ADDRESS) ;
 103
 104
 105 END cflex.