# Bison Parser Headers.                               -*- Autotest -*-

# Copyright (C) 2001-2002, 2006-2007, 2009-2012 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.

AT_BANNER([[Parser Headers.]])


## --------------------- ##
## Invalid CPP headers.  ##
## --------------------- ##

# AT_TEST_CPP_GUARD_H(BASE-NAME, [DIRECTIVES])
# --------------------------------------------
# FIXME: Much of this can be covered by calc.at.
m4_define([AT_TEST_CPP_GUARD_H],
[AT_SETUP([Invalid CPP guards: $2 --defines=$1.h])
AT_BISON_OPTION_PUSHDEFS([$2])
# Possibly create inner directories.
dirname=`AS_DIRNAME([$1])`
AS_MKDIR_P([$dirname])

AT_DATA_GRAMMAR([$1.y],
[$2
%{
#include <$1.h>
]AT_YYERROR_DECLARE_EXTERN[
]AT_YYLEX_DECLARE_EXTERN[
%}
%%
dummy:;
%%
#include <$1.h>
])

AT_BISON_CHECK([--defines=$1.h --output=$1.c $1.y])

AT_COMPILE([$1.o], [-I. -c $1.c])

AT_BISON_OPTION_POPDEFS
AT_CLEANUP
])

AT_TEST_CPP_GUARD_H([input/input])
AT_TEST_CPP_GUARD_H([9foo])
AT_TEST_CPP_GUARD_H([input/input], [%glr-parser])
AT_TEST_CPP_GUARD_H([9foo],        [%glr-parser])



## ---------------- ##
## export YYLTYPE.  ##
## ---------------- ##


AT_SETUP([export YYLTYPE])

AT_DATA_GRAMMAR([input.y],
[%locations

%name-prefix "my_"
%{
#include <stdio.h>
#include <stdlib.h>

static int
my_lex (void)
{
  return EOF;
}

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

%}
%%
exp:;
])

AT_BISON_CHECK([--defines -o input.c input.y])

# YYLTYPE should be defined, and MY_LLOC declared.
AT_DATA([caller.c],
[[#include "input.h"
YYLTYPE *my_llocp = &my_lloc;

int my_parse (void);

int
main (void)
{
  return my_parse ();
}
]])

# Link and execute, just to make sure everything is fine (and in
# particular, that MY_LLOC is indeed defined somewhere).
AT_COMPILE([caller.o])
AT_COMPILE([input.o])
AT_COMPILE([caller], [caller.o input.o])
AT_PARSER_CHECK([./caller])

AT_CLEANUP

## ----------------- ##
## Several parsers.  ##
## ----------------- ##

AT_SETUP([Several parsers])

# AT_DATA_GRAMMAR_SEVERAL([PREFIX], [DIRECTIVES])
# -----------------------------------------------
# Generate and compile to *.o.  Make sure there is no YY* nor yy* in
# the header (but YYDEBUG and YYPARSE_PARAM).
m4_define([AT_DATA_GRAMMAR_SEVERAL],
[AT_BISON_OPTION_PUSHDEFS([%define api.prefix "$1_" $2])
AT_DATA_GRAMMAR([$1.AT_SKEL_CC_IF([yy], [y])],
[[%define api.prefix "$1_"
$2
%union
{
  int integer;
}
%{
#include <stdio.h>
  ]AT_YYERROR_DECLARE[
  ]AT_YYLEX_DECLARE[
%}
%%
exp:
  'x' '1' { printf ("x1\n"); }
| 'x' '2' { printf ("x2\n"); }
| 'x' '3' { printf ("x3\n"); }
| 'x' '4' { printf ("x4\n"); }
| 'x' '5' { printf ("x5\n"); }
| 'x' '6' { printf ("x6\n"); }
;

%%
]AT_YYERROR_DEFINE[
]AT_YYLEX_DEFINE(["$1"])[
]])

AT_BISON_CHECK([-d -o AT_SKEL_CC_IF([$1.cc $1.yy], [$1.c $1.y])])
# C++ output relies on namespaces and still uses yy a lot.
AT_SKEL_CC_IF([],
  [AT_CHECK([$EGREP -i yy $1.h | $EGREP -v 'YY(DEBUG|PARSE_PARAM)'], [1])])
AT_LANG_COMPILE([$1.o])
AT_BISON_OPTION_POPDEFS
])

AT_DATA([main.cc],
[AT_DATA_SOURCE_PROLOGUE
[extern "C"
{
  #include "x1.h"
  #include "x2.h"
  #include "x3.h"
  #include "x4.h"
}
#include "x5.hh"
//#include "x6.hh"

#define ECHO(S) std::cerr << #S": " << S << std::endl;

int
main (void)
{
  ECHO(x1_parse());
  ECHO(x2_parse());
  ECHO(x3_parse());
  ECHO(x4_parse());
  x5_::parser p5;
  ECHO(p5.parse());
//  ECHO(x6_parse());
  return 0;
}
]])

AT_DATA_GRAMMAR_SEVERAL([x1], [])
AT_DATA_GRAMMAR_SEVERAL([x2], [%locations %debug])
AT_DATA_GRAMMAR_SEVERAL([x3], [%glr-parser])
AT_DATA_GRAMMAR_SEVERAL([x4], [%locations %debug %glr-parser])
AT_DATA_GRAMMAR_SEVERAL([x5], [%locations %debug %language "c++"])
#AT_DATA_GRAMMAR_SEVERAL([x6], [%locations %language "c++"])

AT_COMPILE_CXX([parser], [x1.o x2.o x3.o x4.o x5.o main.cc])
AT_CHECK([./parser], [0],
[[x1
x2
x3
x4
x5
]],
[[x1_parse(): 0
x2_parse(): 0
x3_parse(): 0
x4_parse(): 0
p5.parse(): 0
]])

AT_CLEANUP