# Checking Push Parsing.                            -*- Autotest -*-
# Copyright (C) 2007 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.

AT_BANNER([[Push Parsing Tests]])

## ---------------------------------------------- ##
## Push Parsing: Memory Leak for Early Deletion.  ##
## ---------------------------------------------- ##

AT_SETUP([[Push Parsing: Memory Leak for Early Deletion]])

# Requires Valgrind.

AT_DATA_GRAMMAR([[input.y]],
[[
%{
  #include <assert.h>
  #include <stdio.h>
  #define YYINITDEPTH 1
  void yyerror (char const *msg);
%}

%pure-parser %push-parser

%%

start: 'a' 'b' 'c' ;

%%

void
yyerror (char const *msg)
{
  fprintf (stderr, "%s\n", msg);
}

int
main (void)
{
  yypstate *ps;

  /* Make sure we don't try to free ps->yyss in this case.  */
  ps = yypstate_new ();
  yypstate_delete (ps);

  /* yypstate_delete used to leak ps->yyss if the stack was reallocated but the
     parse did not return on success, syntax error, or memory exhaustion.  */
  ps = yypstate_new ();
  assert (yypush_parse (ps, 'a', NULL) == YYPUSH_MORE);
  yypstate_delete (ps);

  ps = yypstate_new ();
  assert (yypush_parse (ps, 'a', NULL) == YYPUSH_MORE);
  assert (yypush_parse (ps, 'b', NULL) == YYPUSH_MORE);
  yypstate_delete (ps);

  return 0;
}
]])

AT_CHECK([[bison -o input.c input.y]])
AT_COMPILE([[input]])
AT_PARSER_CHECK([[./input]])

AT_CLEANUP