maint: run "make update-copyright"

[bison.git] / tests / calc.at

diff --git a/tests/calc.at b/tests/calc.at
index 3b32194cfde34881670c6914992032f404fd31ef..6b5f17e698adececd5625d17c7ca87ac4f3ca4a0 100644 (file)
--- a/tests/calc.at
+++ b/tests/calc.at
@@ -1,22 +1,20 @@
 # Simple calculator.                         -*- Autotest -*-
 
 # Simple calculator.                         -*- Autotest -*-
 

-# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
-# Foundation, Inc.
+# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+# 2008-2009 Free Software Foundation, Inc.

 
 

-# This program is free software; you can redistribute it and/or modify
+# 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
 # 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.
-
+# 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.
 # 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
 # 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.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.

 
 ## ---------------------------------------------------- ##
 ## Compile the grammar described in the documentation.  ##
 
 ## ---------------------------------------------------- ##
 ## Compile the grammar described in the documentation.  ##


@@ -30,21 +28,162 @@
 
 # _AT_DATA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES])
 # -----------------------------------------------
 
 # _AT_DATA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES])
 # -----------------------------------------------

-# Produce `calc.y'.  Don't call this macro directly, because it contains
-# some occurrences of `$1' etc. which will be interpreted by m4.  So
-# you should call it with $1, $2, and $3 as arguments, which is what
-# AT_DATA_CALC_Y does.
+# Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
+# `calc-lex.cc'.
+#
+# Don't call this macro directly, because it contains some occurrences
+# of `$1' etc. which will be interpreted by m4.  So you should call it
+# with $1, $2, and $3 as arguments, which is what AT_DATA_CALC_Y does.

 m4_define([_AT_DATA_CALC_Y],
 [m4_if([$1$2$3], $[1]$[2]$[3], [],
        [m4_fatal([$0: Invalid arguments: $@])])dnl
 m4_define([_AT_DATA_CALC_Y],
 [m4_if([$1$2$3], $[1]$[2]$[3], [],
        [m4_fatal([$0: Invalid arguments: $@])])dnl

+m4_pushdef([AT_CALC_LEX],
+[[#include <ctype.h>
+
+int ]AT_NAME_PREFIX[lex (]AT_LEX_FORMALS[);
+static int get_char (]AT_LEX_FORMALS[);
+static void unget_char (]AT_LEX_PRE_FORMALS[ int c);
+
+]AT_LOCATION_IF([
+static YYLTYPE last_yylloc;
+])[
+static int
+get_char (]AT_LEX_FORMALS[)
+{
+  int res = getc (input);
+  ]AT_USE_LEX_ARGS[;
+]AT_LOCATION_IF([
+  last_yylloc = AT_LOC;
+  if (res == '\n')
+    {
+      AT_LOC.last_line++;
+      AT_LOC.last_column = 1;
+    }
+  else
+    AT_LOC.last_column++;
+])[
+  return res;
+}
+
+static void
+unget_char (]AT_LEX_PRE_FORMALS[ int c)
+{
+  ]AT_USE_LEX_ARGS[;
+]AT_LOCATION_IF([
+  /* Wrong when C == `\n'. */
+  AT_LOC = last_yylloc;
+])[
+  ungetc (c, input);
+}
+
+static int
+read_signed_integer (]AT_LEX_FORMALS[)
+{
+  int c = get_char (]AT_LEX_ARGS[);
+  int sign = 1;
+  int n = 0;
+
+  ]AT_USE_LEX_ARGS[;
+  if (c == '-')
+    {
+      c = get_char (]AT_LEX_ARGS[);
+      sign = -1;
+    }
+
+  while (isdigit (c))
+    {
+      n = 10 * n + (c - '0');
+      c = get_char (]AT_LEX_ARGS[);
+    }
+
+  unget_char (]AT_LEX_PRE_ARGS[ c);
+
+  return sign * n;
+}
+
+
+/*---------------------------------------------------------------.
+| Lexical analyzer returns an integer on the stack and the token |
+| NUM, or the ASCII character read if not a number.  Skips all   |
+| blanks and tabs, returns 0 for EOF.                            |
+`---------------------------------------------------------------*/
+
+int
+]AT_NAME_PREFIX[lex (]AT_LEX_FORMALS[)
+{
+  static int init = 1;
+  int c;
+
+  if (init)
+    {
+      init = 0;
+]AT_LOCATION_IF([
+      AT_LOC.last_column = 1;
+      AT_LOC.last_line = 1;
+])[
+    }
+
+]AT_LOCATION_IF([
+ AT_LOC.first_column = AT_LOC.last_column;
+  AT_LOC.first_line   = AT_LOC.last_line;
+])[
+
+  /* Skip white space.  */
+  while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t')
+    {
+]AT_LOCATION_IF(
+[     AT_LOC.first_column = AT_LOC.last_column;
+      AT_LOC.first_line   = AT_LOC.last_line;
+])[
+    }
+
+  /* process numbers   */
+  if (c == '.' || isdigit (c))
+    {
+      unget_char (]AT_LEX_PRE_ARGS[ c);
+      ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
+      return NUM;
+    }
+
+  /* Return end-of-file.  */
+  if (c == EOF)
+    return CALC_EOF;
+
+  /* Return single chars. */
+  return c;
+}
+]])
+

 AT_DATA_GRAMMAR([calc.y],
 [[/* Infix notation calculator--calc */
 ]$4
 AT_SKEL_CC_IF(
 AT_DATA_GRAMMAR([calc.y],
 [[/* Infix notation calculator--calc */
 ]$4
 AT_SKEL_CC_IF(

-[%define "global_tokens_and_yystype"])[
-%{
+[%define global_tokens_and_yystype])[
+%code requires {
+/* Exercise pre-prologue dependency to %union.  */
+typedef int semantic_value;
+}
+
+/* Exercise %union. */
+%union
+{
+  semantic_value ival;
+};
+
+%code provides {

 #include <stdio.h>
 #include <stdio.h>

+/* The input.  */
+extern FILE *input;]AT_SKEL_CC_IF([[
+#ifndef YYLTYPE
+# define YYLTYPE ]AT_NAME_PREFIX[::location
+#endif
+#define first_line   begin.line
+#define first_column begin.column
+#define last_line    end.line
+#define last_column  end.column]])[
+}

 
 

+%code {

 #include <stdlib.h>
 #include <string.h>
 #if HAVE_UNISTD_H
 #include <stdlib.h>
 #include <string.h>
 #if HAVE_UNISTD_H


@@ -53,33 +192,13 @@ AT_SKEL_CC_IF(
 # undef alarm
 # define alarm(seconds) /* empty */
 #endif
 # undef alarm
 # define alarm(seconds) /* empty */
 #endif

-#include <ctype.h>

 #define USE(Var)
 
 #define USE(Var)
 

-/* Exercise pre-prologue dependency to %union.  */
-typedef int semantic_value;
-
+FILE *input;

 static semantic_value global_result = 0;
 static int global_count = 0;
 static semantic_value global_result = 0;
 static int global_count = 0;

-%}
-
-/* Exercise %union. */
-%union
-{
-  semantic_value ival;
-};
-
-%{

 static int power (int base, int exponent);
 static int power (int base, int exponent);

-]AT_SKEL_CC_IF(
-[#ifndef YYLTYPE
-[#] define YYLTYPE AT_NAME_PREFIX::location
-#endif
-#define first_line   begin.line
-#define first_column begin.column
-#define last_line    end.line
-#define last_column  end.column
-],
+]AT_SKEL_CC_IF(,

 [/* yyerror receives the location if:
    - %location & %pure & %glr
    - %location & %pure & %yacc & %parse-param. */
 [/* yyerror receives the location if:
    - %location & %pure & %glr
    - %location & %pure & %yacc & %parse-param. */


@@ -87,10 +206,8 @@ static void yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
                      AT_PARAM_IF([semantic_value *result, int *count, ])
                      const char *s
                      );])[
                      AT_PARAM_IF([semantic_value *result, int *count, ])
                      const char *s
                      );])[

-static int yylex (]AT_LEX_FORMALS[);
-static int get_char (]AT_LEX_FORMALS[);
-static void unget_char (]AT_LEX_PRE_FORMALS[ int c);
-%}
+int yylex (]AT_LEX_FORMALS[);
+}

 
 ]AT_SKEL_CC_IF(
 [/* The lalr1.cc skeleton, for backward compatibility, defines
 
 ]AT_SKEL_CC_IF(
 [/* The lalr1.cc skeleton, for backward compatibility, defines


@@ -141,13 +258,11 @@ exp:
 | '-' exp  %prec NEG { $$ = -$2;            }
 | exp '^' exp        { $$ = power ($1, $3); }
 | '(' exp ')'        { $$ = $2;             }
 | '-' exp  %prec NEG { $$ = -$2;            }
 | exp '^' exp        { $$ = power ($1, $3); }
 | '(' exp ')'        { $$ = $2;             }

-| '(' error ')'      { $$ = 1111;           }
+| '(' error ')'      { $$ = 1111; yyerrok;  }

 | '!'                { $$ = 0; YYERROR;     }
 | '-' error          { $$ = 0; YYERROR;     }
 ;
 %%
 | '!'                { $$ = 0; YYERROR;     }
 | '-' error          { $$ = 0; YYERROR;     }
 ;
 %%

-/* The input.  */
-static FILE *input;

 
 ]AT_SKEL_CC_IF(
 [/* A C++ error reporting function.  */
 
 ]AT_SKEL_CC_IF(
 [/* A C++ error reporting function.  */


@@ -187,117 +302,7 @@ AT_YYERROR_SEES_LOC_IF([
   fprintf (stderr, "%s\n", s);
 }])[
 
   fprintf (stderr, "%s\n", s);
 }])[
 

-
-]AT_LOCATION_IF([
-static YYLTYPE last_yylloc;
-])[
-static int
-get_char (]AT_LEX_FORMALS[)
-{
-  int res = getc (input);
-  ]AT_USE_LEX_ARGS[;
-]AT_LOCATION_IF([
-  last_yylloc = AT_LOC;
-  if (res == '\n')
-    {
-      AT_LOC.last_line++;
-      AT_LOC.last_column = 1;
-    }
-  else
-    AT_LOC.last_column++;
-])[
-  return res;
-}
-
-
-static void
-unget_char (]AT_LEX_PRE_FORMALS[ int c)
-{
-  ]AT_USE_LEX_ARGS[;
-]AT_LOCATION_IF([
-  /* Wrong when C == `\n'. */
-  AT_LOC = last_yylloc;
-])[
-  ungetc (c, input);
-}
-
-static int
-read_signed_integer (]AT_LEX_FORMALS[)
-{
-  int c = get_char (]AT_LEX_ARGS[);
-  int sign = 1;
-  int n = 0;
-
-  ]AT_USE_LEX_ARGS[;
-  if (c == '-')
-    {
-      c = get_char (]AT_LEX_ARGS[);
-      sign = -1;
-    }
-
-  while (isdigit (c))
-    {
-      n = 10 * n + (c - '0');
-      c = get_char (]AT_LEX_ARGS[);
-    }
-
-  unget_char (]AT_LEX_PRE_ARGS[ c);
-
-  return sign * n;
-}
-
-
-
-/*---------------------------------------------------------------.
-| Lexical analyzer returns an integer on the stack and the token |
-| NUM, or the ASCII character read if not a number.  Skips all   |
-| blanks and tabs, returns 0 for EOF.                            |
-`---------------------------------------------------------------*/
-
-static int
-yylex (]AT_LEX_FORMALS[)
-{
-  static int init = 1;
-  int c;
-
-  if (init)
-    {
-      init = 0;
-]AT_LOCATION_IF([
-      AT_LOC.last_column = 1;
-      AT_LOC.last_line = 1;
-])[
-    }
-
-]AT_LOCATION_IF([
- AT_LOC.first_column = AT_LOC.last_column;
-  AT_LOC.first_line   = AT_LOC.last_line;
-])[
-
-  /* Skip white space.  */
-  while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t')
-    {
-]AT_LOCATION_IF(
-[     AT_LOC.first_column = AT_LOC.last_column;
-      AT_LOC.first_line   = AT_LOC.last_line;
-])[
-    }
-
-  /* process numbers   */
-  if (c == '.' || isdigit (c))
-    {
-      unget_char (]AT_LEX_PRE_ARGS[ c);
-      ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
-      return NUM;
-    }
-
-  /* Return end-of-file.  */
-  if (c == EOF)
-    return CALC_EOF;
-
-  /* Return single chars. */
-  return c;
-}
+]AT_DEFINES_IF(, [AT_CALC_LEX])[

 
 static int
 power (int base, int exponent)
 
 static int
 power (int base, int exponent)


@@ -336,17 +341,7 @@ main (int argc, const char **argv)
 
 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
 [  yydebug = 1;])])[
 
 ]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
 [  yydebug = 1;])])[

-]AT_PUSH_IF([
-  {
-    struct yypstate *pstate = yypstate_init ();
-    YYSTYPE my_lval;
-    ]AT_LOCATION_IF([YYLTYPE my_lloc;])[
-    do {
-      status = yypush_parse (pstate, yylex (&my_lval]AT_LOCATION_IF([[, &my_lloc]])[), &my_lval]AT_LOCATION_IF([[, &my_lloc]])[);
-    } while (status == YYPUSH_MORE);
-    free (pstate);
-  }],[
-  status = yyparse (]AT_PARAM_IF([[&result, &count]])[);])[
+  status = yyparse (]AT_PARAM_IF([[&result, &count]])[);

   fclose (input);
   if (global_result != result)
     abort ();
   fclose (input);
   if (global_result != result)
     abort ();


@@ -355,12 +350,18 @@ main (int argc, const char **argv)
   return status;
 }
 ]])
   return status;
 }
 ]])

+AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
+[[#include "calc.h]AT_SKEL_CC_IF([[h]])["
+
+]AT_CALC_LEX])])
+m4_popdef([AT_CALC_LEX])

 ])# _AT_DATA_CALC_Y
 
 
 # AT_DATA_CALC_Y([BISON-OPTIONS])
 # -------------------------------
 ])# _AT_DATA_CALC_Y
 
 
 # AT_DATA_CALC_Y([BISON-OPTIONS])
 # -------------------------------

-# Produce `calc.y'.
+# Produce `calc.y' and, if %defines was specified, `calc-lex.c' or
+# `calc-lex.cc'.

 m4_define([AT_DATA_CALC_Y],
 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
 ])
 m4_define([AT_DATA_CALC_Y],
 [_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])
 ])


@@ -465,12 +466,7 @@ m4_ifval([$2], [AT_CHECK([exit 77])])
 AT_BISON_OPTION_PUSHDEFS([$1])
 
 AT_DATA_CALC_Y([$1])
 AT_BISON_OPTION_PUSHDEFS([$1])
 
 AT_DATA_CALC_Y([$1])

-
-AT_SKEL_CC_IF(
-  [AT_CHECK([bison -o calc.cc calc.y])
-   AT_COMPILE_CXX([calc])],
-  [AT_CHECK([bison -o calc.c calc.y])
-   AT_COMPILE([calc])])
+AT_FULL_COMPILE([calc], [AT_DEFINES_IF([[lex]])])

 
 # Test the priorities.
 _AT_CHECK_CALC([$1],
 
 # Test the priorities.
 _AT_CHECK_CALC([$1],


@@ -541,6 +537,14 @@ _AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (0 0) = 1], [113],
 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
 1.12: syntax error, unexpected number
 calc: error: 2222 != 1])
 [1.4: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
 1.12: syntax error, unexpected number
 calc: error: 2222 != 1])

+
+# Check that yyerrok works properly: second error is not reported,
+# third and fourth are.  Parse status is succesfull.
+_AT_CHECK_CALC_ERROR([$1], [0], [(* *) + (*) + (*)], [113],
+[1.2: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
+1.10: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
+1.16: syntax error, unexpected '*', expecting number or '-' or '(' or '!'])
+

 AT_BISON_OPTION_POPDEFS
 
 AT_CLEANUP
 AT_BISON_OPTION_POPDEFS
 
 AT_CLEANUP


@@ -571,8 +575,8 @@ AT_CHECK_CALC_LALR([%verbose])
 AT_CHECK_CALC_LALR([%yacc])
 AT_CHECK_CALC_LALR([%error-verbose])
 
 AT_CHECK_CALC_LALR([%yacc])
 AT_CHECK_CALC_LALR([%error-verbose])
 

-AT_CHECK_CALC_LALR([%pure-parser %locations])
-AT_CHECK_CALC_LALR([%push-parser %locations %skeleton "push.c"])
+AT_CHECK_CALC_LALR([%define api.pure %locations])
+AT_CHECK_CALC_LALR([%define api.push_pull "both" %define api.pure %locations])

 AT_CHECK_CALC_LALR([%error-verbose %locations])
 
 AT_CHECK_CALC_LALR([%error-verbose %locations %defines %name-prefix "calc" %verbose %yacc])
 AT_CHECK_CALC_LALR([%error-verbose %locations])
 
 AT_CHECK_CALC_LALR([%error-verbose %locations %defines %name-prefix "calc" %verbose %yacc])


@@ -580,10 +584,10 @@ AT_CHECK_CALC_LALR([%error-verbose %locations %defines %name-prefix "calc" %verb
 AT_CHECK_CALC_LALR([%debug])
 AT_CHECK_CALC_LALR([%error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
 
 AT_CHECK_CALC_LALR([%debug])
 AT_CHECK_CALC_LALR([%error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
 

-AT_CHECK_CALC_LALR([%pure-parser %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
-AT_CHECK_CALC_LALR([%push-parser %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc %skeleton "push.c"])
+AT_CHECK_CALC_LALR([%define api.pure %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_LALR([%define api.push_pull "both" %define api.pure %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])

 
 

-AT_CHECK_CALC_LALR([%pure-parser %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
+AT_CHECK_CALC_LALR([%define api.pure %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])

 
 
 # ----------------------- #
 
 
 # ----------------------- #


@@ -609,7 +613,7 @@ AT_CHECK_CALC_GLR([%verbose])
 AT_CHECK_CALC_GLR([%yacc])
 AT_CHECK_CALC_GLR([%error-verbose])
 
 AT_CHECK_CALC_GLR([%yacc])
 AT_CHECK_CALC_GLR([%error-verbose])
 

-AT_CHECK_CALC_GLR([%pure-parser %locations])
+AT_CHECK_CALC_GLR([%define api.pure %locations])

 AT_CHECK_CALC_GLR([%error-verbose %locations])
 
 AT_CHECK_CALC_GLR([%error-verbose %locations %defines %name-prefix "calc" %verbose %yacc])
 AT_CHECK_CALC_GLR([%error-verbose %locations])
 
 AT_CHECK_CALC_GLR([%error-verbose %locations %defines %name-prefix "calc" %verbose %yacc])


@@ -617,9 +621,9 @@ AT_CHECK_CALC_GLR([%error-verbose %locations %defines %name-prefix "calc" %verbo
 AT_CHECK_CALC_GLR([%debug])
 AT_CHECK_CALC_GLR([%error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
 
 AT_CHECK_CALC_GLR([%debug])
 AT_CHECK_CALC_GLR([%error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
 

-AT_CHECK_CALC_GLR([%pure-parser %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_GLR([%define api.pure %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])

 
 

-AT_CHECK_CALC_GLR([%pure-parser %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
+AT_CHECK_CALC_GLR([%define api.pure %error-verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])

 
 
 # ----------------------------- #
 
 
 # ----------------------------- #


@@ -628,12 +632,15 @@ AT_CHECK_CALC_GLR([%pure-parser %error-verbose %debug %locations %defines %name-
 
 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
 
 
 AT_BANNER([[Simple LALR(1) C++ Calculator.]])
 

+# First let's try using %skeleton
+AT_CHECK_CALC([%skeleton "lalr1.cc" %defines %locations])
+

 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
 # ---------------------------------------
 # Start a testing chunk which compiles `calc' grammar with
 # the C++ skeleton, and performs several tests over the parser.
 m4_define([AT_CHECK_CALC_LALR1_CC],
 # AT_CHECK_CALC_LALR1_CC([BISON-OPTIONS])
 # ---------------------------------------
 # Start a testing chunk which compiles `calc' grammar with
 # the C++ skeleton, and performs several tests over the parser.
 m4_define([AT_CHECK_CALC_LALR1_CC],

-[AT_CHECK_CALC([%skeleton "lalr1.cc" %defines %locations] $@)])
+[AT_CHECK_CALC([%language "C++" %defines %locations] $@)])

 
 AT_CHECK_CALC_LALR1_CC([])
 AT_CHECK_CALC_LALR1_CC([%error-verbose %name-prefix "calc" %verbose %yacc])
 
 AT_CHECK_CALC_LALR1_CC([])
 AT_CHECK_CALC_LALR1_CC([%error-verbose %name-prefix "calc" %verbose %yacc])


@@ -652,12 +659,15 @@ AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %name-prefix "calc" %
 
 AT_BANNER([[Simple GLR C++ Calculator.]])
 
 
 AT_BANNER([[Simple GLR C++ Calculator.]])
 

+# Again, we try also using %skeleton.
+AT_CHECK_CALC([%skeleton "glr.cc" %defines %locations])
+

 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
 # -------------------------------------
 # Start a testing chunk which compiles `calc' grammar with
 # the GLR C++ skeleton, and performs several tests over the parser.
 m4_define([AT_CHECK_CALC_GLR_CC],
 # AT_CHECK_CALC_GLR_CC([BISON-OPTIONS])
 # -------------------------------------
 # Start a testing chunk which compiles `calc' grammar with
 # the GLR C++ skeleton, and performs several tests over the parser.
 m4_define([AT_CHECK_CALC_GLR_CC],

-[AT_CHECK_CALC([%skeleton "glr.cc" %defines %locations] $@)])
+[AT_CHECK_CALC([%language "C++" %glr-parser %defines %locations] $@)])

 
 AT_CHECK_CALC_GLR_CC([])
 AT_CHECK_CALC_GLR_CC([%error-verbose %name-prefix "calc" %verbose %yacc])
 
 AT_CHECK_CALC_GLR_CC([])
 AT_CHECK_CALC_GLR_CC([%error-verbose %name-prefix "calc" %verbose %yacc])