tests/semantic.at

   1 # Bison Semantic Parsers.                               -*- Autotest -*-
   2 # Copyright 2001 Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2, or (at your option)
   7 # any later version.
   8
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  17 # 02111-1307, USA.
  18
  19 AT_BANNER([[Semantic Parsers.]])
  20
  21 # Well, nothing, or almost, is known about semantic parsers.  For the
  22 # time being, just make sure we still parse them properly.
  23
  24 ## ---------------- ##
  25 ## Parsing Guards.  ##
  26 ## ---------------- ##
  27
  28
  29 AT_SETUP([Parsing Guards])
  30
  31 AT_DATA([input.y],
  32 [[%semantic-parser
  33 %union {
  34   int ival;
  35 }
  36 %token <ival> INT
  37 %type  <ival> exp
  38 %%
  39 exp: exp '+' exp { $$ = $1 + $3 }
  40    | exp '/' exp %guard { if ($3 == 0) yyerror = 1 } { $$ = $1 / $3 }
  41    | INT;
  42 %%
  43 ]])
  44
  45 AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
  46
  47 AT_CLEANUP