src/libpakfire/parser/scanner.l

   1 /*#############################################################################
   2 #                                                                             #
   3 # Pakfire - The IPFire package management system                              #
   4 # Copyright (C) 2019 Pakfire development team                                 #
   5 #                                                                             #
   6 # This program is free software: you can redistribute it and/or modify        #
   7 # it under the terms of the GNU General Public License as published by        #
   8 # the Free Software Foundation, either version 3 of the License, or           #
   9 # (at your option) any later version.                                         #
  10 #                                                                             #
  11 # This program is distributed in the hope that it will be useful,             #
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  14 # GNU General Public License for more details.                                #
  15 #                                                                             #
  16 # You should have received a copy of the GNU General Public License           #
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  18 #                                                                             #
  19 #############################################################################*/
  20
  21 %option nounput noinput noyywrap yylineno
  22
  23 %{
  24 #define YY_DECL int yylex()
  25
  26 int num_lines;
  27
  28 #include "grammar.h"
  29 %}
  30
  31 whitespace      ([ \t])+
  32
  33 %%
  34
  35 #.*$            { /* ignore comments */ }
  36 whitespace      { return WHITESPACE; }
  37 \t                      { return TAB; }
  38 \n                      { num_lines++; return NEWLINE; }
  39
  40 [A-Za-z]        { return VARIABLE; }
  41 [A-Za-z0-9]     { return VALUE; }
  42
  43 "="                     { return ASSIGN; }
  44 "+="            { return APPEND; }
  45
  46 "define"        { return DEFINE; }
  47 "def"           { return DEFINE; }
  48 "end"           { return END; }
  49
  50 %%