todo: remove erroneous task

[bison.git] / tests / calc.at

diff --git a/tests/calc.at b/tests/calc.at
index 149abb2f644c524cd0b0defbc01deeedd0b6febb..984e6b5fdff119809712cd398fdb3d03a1016402 100644 (file)
--- a/tests/calc.at
+++ b/tests/calc.at
@@ -1,20 +1,19 @@
-# Checking the output filenames.                         -*- Autotest -*-
-# Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+# Simple calculator.                         -*- Autotest -*-

 
 

-# 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.
+# Copyright (C) 2000-2012 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.
 # 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., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, 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.  ##


@@ -26,305 +25,362 @@
 # ------------------------- #
 
 
 # ------------------------- #
 
 

-# _AT_DATA_CALC_Y($1, $2, $3, [CPP-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.
+# _AT_DATA_CALC_Y($1, $2, $3, [BISON-DIRECTIVES])
+# -----------------------------------------------
+# 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.
+#
+# When %defines is not passed, generate a single self-contained file.
+# Otherwise, generate three: calc.y with the parser, calc-lex.c with
+# the scanner, and calc-main.c with "main()".  This is in order to
+# stress the use of the generated parser header.  To avoid code
+# duplication, AT_CALC_LEX and AT_CALC_MAIN contain the body of these
+# two later files.

 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

-AT_DATA([calc.y],
-[[/* Infix notation calculator--calc */
-
-%{
-#include <config.h>
-/* We don't need perfect functions for these tests. */
-#undef malloc
-#undef memcmp
-#undef realloc
-#include <stdio.h>
-
-#if STDC_HEADERS
-# include <stdlib.h>
-# include <string.h>
-#else
-char *strcat(char *dest, const char *src);
-#endif
-#include <ctype.h>
-
-extern void perror (const char *s);
-
-/* Exercise pre-prologue dependency to %union.  */
-typedef int value_t;

 
 

-%}
+m4_pushdef([AT_CALC_MAIN],
+[#include <assert.h>
+#include <unistd.h>

 
 

-/* Exercise %union. */
-%union
+AT_SKEL_CC_IF([[
+/* A C++ ]AT_NAME_PREFIX[parse that simulates the C signature.  */
+int
+]AT_NAME_PREFIX[parse (]AT_PARAM_IF([semantic_value *result, int *count]))[

 {
 {

-  value_t ival;
-};
-
-%{
-#if YYPURE
-#  define LOC     (*yylloc)
-#  define VAL     (*yylval)
-#else
-#  define LOC     (yylloc)
-#  define VAL     (yylval)
-#endif
-
-#if YYPURE
-#  if YYLSP_NEEDED
-#    define LEX_FORMALS     YYSTYPE *yylval, YYLTYPE *yylloc
-#    define LEX_ARGS        yylval, yylloc
-#    define USE_LEX_ARGS    (void) yylval; (void) yylloc;
-#  else
-#    define LEX_FORMALS     YYSTYPE *yylval
-#    define LEX_ARGS        yylval
-#    define USE_LEX_ARGS    (void) yylval
-#  endif
-#  define LEX_PRE_FORMALS   LEX_FORMALS,
-#  define LEX_PRE_ARGS      LEX_ARGS,
-#else
-#  define LEX_FORMALS       void
-#  define LEX_PRE_FORMALS
-#  define LEX_ARGS
-#  define LEX_PRE_ARGS
-#  define USE_LEX_ARGS
+  ]AT_NAME_PREFIX[::parser parser]AT_PARAM_IF([ (result, count)])[;
+#if ]AT_API_PREFIX[DEBUG
+  parser.set_debug_level (1);

 #endif
 #endif

+  return parser.parse ();
+}
+]])[

 
 

-static int power (int base, int exponent);
-static void yyerror (const char *s);
-static int yylex (LEX_FORMALS);
-static int yygetc (LEX_FORMALS);
-static void yyungetc (LEX_PRE_FORMALS int c);
-%}
+semantic_value global_result = 0;
+int global_count = 0;

 
 

-/* Bison Declarations */
-%token CALC_EOF 0 "end of input"
-%token <ival> NUM "number"
-%type  <ival> exp
+/* A C main function.  */
+int
+main (int argc, const char **argv)
+{
+  semantic_value result = 0;
+  int count = 0;
+  int status;

 
 

-%nonassoc '=' /* comparison           */
-%left '-' '+'
-%left '*' '/'
-%left NEG     /* negation--unary minus */
-%right '^'    /* exponentiation        */
+  /* This used to be alarm (10), but that isn't enough time for
+     a July 1995 vintage DEC Alphastation 200 4/100 system,
+     according to Nelson H. F. Beebe.  100 seconds is enough.  */
+  alarm (100);

 
 

-]$4[
+  if (argc == 2)
+    input = fopen (argv[1], "r");
+  else
+    input = stdin;

 
 

-/* Grammar follows */
-%%
-input:
-  line
-| input line
-;
+  if (!input)
+    {
+      perror (argv[1]);
+      return 3;
+    }

 
 

-line:
-  '\n'
-| exp '\n'
-;
+]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
+[  ]AT_NAME_PREFIX[debug = 1;])])[
+  status = ]AT_NAME_PREFIX[parse (]AT_PARAM_IF([[&result, &count]])[);
+  if (fclose (input))
+    perror ("fclose");
+  assert (global_result == result);
+  assert (global_count == count);
+  return status;
+}
+]])

 
 

-exp:
-  NUM                { $$ = $1;             }
-| exp '=' exp
-  {
-     if ($1 != $3)
-       fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
-     $$ = $1 == $3;
-  }
-| exp '+' exp        { $$ = $1 + $3;        }
-| exp '-' exp        { $$ = $1 - $3;        }
-| exp '*' exp        { $$ = $1 * $3;        }
-| exp '/' exp        { $$ = $1 / $3;        }
-| '-' exp  %prec NEG { $$ = -$2;            }
-| exp '^' exp        { $$ = power ($1, $3); }
-| '(' exp ')'        { $$ = $2;             }
-| '(' error ')'      { $$ = 0;              }
-;
-%%
-/* The input. */
-FILE *yyin;

 
 

-static void
-yyerror (const char *s)
-{
-#if YYLSP_NEEDED
-  fprintf (stderr, "%d.%d-%d.%d: ",
-          LOC.first_line, LOC.first_column,
-          LOC.last_line, LOC.last_column);
-#endif
-  fprintf (stderr, "%s\n", s);
-}
+m4_pushdef([AT_CALC_LEX],
+[[#include <ctype.h>

 
 

+]AT_YYLEX_DECLARE_EXTERN[
+static int get_char (]AT_YYLEX_FORMALS[);
+static void unget_char (]AT_YYLEX_PRE_FORMALS[ int c);

 
 

-#if YYLSP_NEEDED
-static YYLTYPE last_yylloc;
-#endif
+]AT_LOCATION_IF([
+static AT_YYLTYPE last_yylloc;
+])[

 static int
 static int

-yygetc (LEX_FORMALS)
+get_char (]AT_YYLEX_FORMALS[)

 {
 {

-  int res = getc (yyin);
-  USE_LEX_ARGS;
-#if YYLSP_NEEDED
-  last_yylloc = LOC;
+  int res = getc (input);
+  ]AT_USE_LEX_ARGS[;
+]AT_LOCATION_IF([
+  last_yylloc = AT_LOC;

   if (res == '\n')
     {
   if (res == '\n')
     {

-      LOC.last_line++;
-      LOC.last_column = 1;
+      AT_LOC_LAST_LINE++;
+      AT_LOC_LAST_COLUMN = 1;

     }
   else
     }
   else

-    LOC.last_column++;
-#endif
+    AT_LOC_LAST_COLUMN++;
+])[

   return res;
 }
 
   return res;
 }
 

-

 static void
 static void

-yyungetc (LEX_PRE_FORMALS int c)
+unget_char (]AT_YYLEX_PRE_FORMALS[ int c)

 {
 {

-  USE_LEX_ARGS;
-#if YYLSP_NEEDED
+  ]AT_USE_LEX_ARGS[;
+]AT_LOCATION_IF([

   /* Wrong when C == `\n'. */
   /* Wrong when C == `\n'. */

-  LOC = last_yylloc;
-#endif
-  ungetc (c, yyin);
+  AT_LOC = last_yylloc;
+])[
+  ungetc (c, input);

 }
 
 static int
 }
 
 static int

-read_signed_integer (LEX_FORMALS)
+read_signed_integer (]AT_YYLEX_FORMALS[)

 {
 {

-  int c = yygetc (LEX_ARGS);
+  int c = get_char (]AT_YYLEX_ARGS[);

   int sign = 1;
   int n = 0;
 
   int sign = 1;
   int n = 0;
 

-  USE_LEX_ARGS;
+  ]AT_USE_LEX_ARGS[;

   if (c == '-')
     {
   if (c == '-')
     {

-      c = yygetc (LEX_ARGS);
+      c = get_char (]AT_YYLEX_ARGS[);

       sign = -1;
     }
 
   while (isdigit (c))
     {
       n = 10 * n + (c - '0');
       sign = -1;
     }
 
   while (isdigit (c))
     {
       n = 10 * n + (c - '0');

-      c = yygetc (LEX_ARGS);
+      c = get_char (]AT_YYLEX_ARGS[);

     }
 
     }
 

-  yyungetc (LEX_PRE_ARGS c);
+  unget_char (]AT_YYLEX_PRE_ARGS[ c);

 
   return sign * n;
 }
 
 
 
   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.                            |
 `---------------------------------------------------------------*/
 
 /*---------------------------------------------------------------.
 | 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 (LEX_FORMALS)
+]AT_YYLEX_PROTOTYPE[

 {
 {

-  static int init = 1;

   int c;
   int c;

-
-  if (init)
+  /* Skip current token, then white spaces.  */
+  do

     {
     {

-      init = 0;
-#if YYLSP_NEEDED
-      LOC.last_column = 1;
-      LOC.last_line = 1;
-#endif
-    }
-
-#if YYLSP_NEEDED
-  LOC.first_column = LOC.last_column;
-  LOC.first_line = LOC.last_line;
-#endif
-
-  /* Skip white space.  */
-  while ((c = yygetc (LEX_ARGS)) == ' ' || c == '\t')
-    {
-#if YYLSP_NEEDED
-      LOC.first_column = LOC.last_column;
-      LOC.first_line = LOC.last_line;
-#endif
+]AT_LOCATION_IF(
+[     AT_LOC_FIRST_COLUMN = AT_LOC_LAST_COLUMN;
+      AT_LOC_FIRST_LINE   = AT_LOC_LAST_LINE;
+])[

     }
     }

+  while ((c = get_char (]AT_YYLEX_ARGS[)) == ' ' || c == '\t');

 
   /* process numbers   */
   if (c == '.' || isdigit (c))
     {
 
   /* process numbers   */
   if (c == '.' || isdigit (c))
     {

-      yyungetc (LEX_PRE_ARGS c);
-      VAL.ival = read_signed_integer (LEX_ARGS);
-      return NUM;
+      unget_char (]AT_YYLEX_PRE_ARGS[ c);
+      ]AT_VAL[.ival = read_signed_integer (]AT_YYLEX_ARGS[);
+      return ]AT_TOKEN_PREFIX[NUM;

     }
 
   /* Return end-of-file.  */
   if (c == EOF)
     }
 
   /* Return end-of-file.  */
   if (c == EOF)

-    return CALC_EOF;
+    return ]AT_TOKEN_PREFIX[CALC_EOF;

 
   /* Return single chars. */
   return c;
 }
 
   /* Return single chars. */
   return c;
 }

+]])
+
+AT_DATA_GRAMMAR([calc.y],
+[[/* Infix notation calculator--calc */
+]$4
+AT_SKEL_CC_IF(
+[%define global_tokens_and_yystype])[
+%code requires
+{
+]AT_LOCATION_TYPE_IF([[
+# include <iostream>
+  struct Point
+  {
+    int l;
+    int c;
+  };
+
+  struct Span
+  {
+    Point first;
+    Point last;
+  };
+
+# define YYLLOC_DEFAULT(Current, Rhs, N)                                \
+  do                                                                    \
+    if (N)                                                              \
+      {                                                                 \
+        (Current).first = YYRHSLOC (Rhs, 1).first;                      \
+        (Current).last  = YYRHSLOC (Rhs, N).last;                       \
+      }                                                                 \
+    else                                                                \
+      {                                                                 \
+        (Current).first = (Current).last = YYRHSLOC (Rhs, 0).last;      \
+      }                                                                 \
+  while (false)
+
+]])[
+  /* Exercise pre-prologue dependency to %union.  */
+  typedef int semantic_value;
+}
+
+/* Exercise %union. */
+%union
+{
+  semantic_value ival;
+};
+%printer { ]AT_SKEL_CC_IF([[yyoutput << $$]],
+                          [[fprintf (yyoutput, "%d", $$)]])[; } <ival>;
+
+%code provides
+{
+  #include <stdio.h>
+  /* The input.  */
+  extern FILE *input;
+  extern semantic_value global_result;
+  extern int global_count;
+}
+
+%code
+{
+#include <assert.h>
+#include <string.h>
+#define USE(Var)
+
+FILE *input;
+static int power (int base, int exponent);
+
+]AT_YYERROR_DECLARE[
+]AT_YYLEX_DECLARE_EXTERN[
+}
+
+]AT_SKEL_CC_IF([AT_LOCATION_TYPE_IF([[
+%initial-action
+{
+  @$.first.l = @$.first.c = 1;
+  @$.last = @$.first;
+}]])])[
+
+/* Bison Declarations */
+%token CALC_EOF 0 "end of input"
+%token <ival> NUM "number"
+%type  <ival> exp
+
+%nonassoc '='   /* comparison          */
+%left '-' '+'
+%left '*' '/'
+%precedence NEG /* negation--unary minus */
+%right '^'      /* exponentiation        */
+
+/* Grammar follows */
+%%
+input:
+  line
+| input line         { ]AT_PARAM_IF([++*count; ++global_count;])[ }
+;
+
+line:
+  '\n'
+| exp '\n'           { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
+;
+
+exp:
+  NUM                { $$ = $1;             }
+| exp '=' exp
+  {
+    if ($1 != $3)
+      fprintf (stderr, "calc: error: %d != %d\n", $1, $3);
+    $$ = $1;
+  }
+| exp '+' exp        { $$ = $1 + $3;        }
+| exp '-' exp        { $$ = $1 - $3;        }
+| exp '*' exp        { $$ = $1 * $3;        }
+| exp '/' exp        { $$ = $1 / $3;        }
+| '-' exp  %prec NEG { $$ = -$2;            }
+| exp '^' exp        { $$ = power ($1, $3); }
+| '(' exp ')'        { $$ = $2;             }
+| '(' error ')'      { $$ = 1111; yyerrok;  }
+| '!'                { $$ = 0; YYERROR;     }
+| '-' error          { $$ = 0; YYERROR;     }
+;
+%%

 
 static int
 power (int base, int exponent)
 {
   int res = 1;
 
 static int
 power (int base, int exponent)
 {
   int res = 1;

-  if (exponent < 0)
-    exit (1);
+  assert (0 <= exponent);

   for (/* Niente */; exponent; --exponent)
     res *= base;
   return res;
 }
 
   for (/* Niente */; exponent; --exponent)
     res *= base;
   return res;
 }
 

-int
-main (int argc, const char **argv)
-{
-  yyin = NULL;
+]AT_SKEL_CC_IF(
+[AT_LOCATION_TYPE_IF([[
+  std::ostream&
+  operator<< (std::ostream& o, const Span& s)
+  {
+    o << s.first.l << '.' << s.first.c;
+    if (s.first.l != s.last.l)
+      o << '-' << s.last.l << '.' << s.last.c - 1;
+    else if (s.first.c != s.last.c - 1)
+      o << '-' << s.last.c - 1;
+    return o;
+  }
+]])])[
+]AT_YYERROR_DEFINE[
+]AT_DEFINES_IF([],
+[AT_CALC_LEX
+AT_CALC_MAIN])])

 
 

-  if (argc == 2)
-    yyin = fopen (argv[1], "r");
-  else
-    yyin = stdin;
+AT_DEFINES_IF([AT_DATA_SOURCE([[calc-lex.c]AT_SKEL_CC_IF([[c]])],
+[[#include "calc.h]AT_SKEL_CC_IF([[h]])["

 
 

-  if (!yyin)
-    {
-      perror (argv[1]);
-      exit (1);
-    }
+]AT_CALC_LEX])
+AT_DATA_SOURCE([[calc-main.c]AT_SKEL_CC_IF([[c]])],
+[[#include "calc.h]AT_SKEL_CC_IF([[h]])["

 
 

-#if YYDEBUG
-  yydebug = 1;
-#endif
-  yyparse ();
-  return 0;
-}
-]])
+]AT_CALC_MAIN])
+])
+m4_popdef([AT_CALC_MAIN])
+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],
 m4_define([AT_DATA_CALC_Y],

-[_AT_DATA_CALC_Y($[1], $[2], $[3],
-                 [m4_bpatsubst([$1], [--[^ ]*])])
+[_AT_DATA_CALC_Y($[1], $[2], $[3], [$1])

 ])
 
 
 
 ])
 
 
 

-# _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES = 0])
-# ------------------------------------------------------------
+# _AT_CHECK_CALC(BISON-OPTIONS, INPUT, [NUM-STDERR-LINES])
+# --------------------------------------------------------

 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
 #
 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then
 # Run `calc' on INPUT and expect no STDOUT nor STDERR.
 #
 # If BISON-OPTIONS contains `%debug' but not `%glr-parser', then

+#

 # NUM-STDERR-LINES is the number of expected lines on stderr.
 # NUM-STDERR-LINES is the number of expected lines on stderr.

+# Currently this is ignored, though, since the output format is fluctuating.

 #
 # We don't count GLR's traces yet, since its traces are somewhat
 # different from LALR's.
 #
 # We don't count GLR's traces yet, since its traces are somewhat
 # different from LALR's.


@@ -333,45 +389,37 @@ m4_define([_AT_CHECK_CALC],
 [[$2
 ]])
 AT_PARSER_CHECK([./calc input], 0, [], [stderr])
 [[$2
 ]])
 AT_PARSER_CHECK([./calc input], 0, [], [stderr])

-m4_bmatch([$1],
-  [%debug.*%glr\|%glr.*%debug],
-     [],
-  [%debug],
-     [AT_CHECK([wc -l <stderr | sed 's/[[^0-9]]//g'], 0, [$3
-])])

 ])
 
 
 ])
 
 

-# _AT_CHECK_CALC_ERROR(BISON-OPTIONS, INPUT, [NUM-DEBUG-LINES],
-#                      [ERROR-LOCATION], [IF-YYERROR-VERBOSE])
-# ------------------------------------------------------------
-# Run `calc' on INPUT, and expect a `parse error' message.
+# _AT_CHECK_CALC_ERROR(BISON-OPTIONS, EXIT-STATUS, INPUT,
+#                      [NUM-STDERR-LINES],
+#                      [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
+# ---------------------------------------------------------
+# Run `calc' on INPUT, and expect a `syntax error' message.

 #
 # If INPUT starts with a slash, it is used as absolute input file name,
 # otherwise as contents.
 #
 #
 # If INPUT starts with a slash, it is used as absolute input file name,
 # otherwise as contents.
 #

-# If BISON-OPTIONS contains `--location', then make sure the ERROR-LOCATION
+# NUM-STDERR-LINES is the number of expected lines on stderr.
+# Currently this is ignored, though, since the output format is fluctuating.
+#
+# If BISON-OPTIONS contains `%location', then make sure the ERROR-LOCATION

 # is correctly output on stderr.
 #
 # is correctly output on stderr.
 #

-# If BISON-OPTIONS contains `%error-verbose', then make sure the
-# IF-YYERROR-VERBOSE message is properly output after `parse error, '
+# If BISON-OPTIONS contains `%define parse.error verbose', then make sure the
+# IF-YYERROR-VERBOSE message is properly output after `syntax error, '

 # on STDERR.
 #
 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
 # is the number of expected lines on stderr.
 m4_define([_AT_CHECK_CALC_ERROR],
 # on STDERR.
 #
 # If BISON-OPTIONS contains `%debug' but not `%glr', then NUM-STDERR-LINES
 # is the number of expected lines on stderr.
 m4_define([_AT_CHECK_CALC_ERROR],

-[m4_bmatch([$2], [^/],
-           [AT_PARSER_CHECK([./calc $2], 0, [], [stderr])],
+[m4_bmatch([$3], [^/],
+           [AT_PARSER_CHECK([./calc $3], $2, [], [stderr])],

            [AT_DATA([[input]],
            [AT_DATA([[input]],

-[[$2
+[[$3

 ]])
 ]])

-AT_PARSER_CHECK([./calc input], 0, [], [stderr])])
-m4_bmatch([$1],
-  [%debug.*%glr\|%glr.*%debug],
-     [],
-  [%debug],
-     [AT_CHECK([wc -l <stderr | sed 's/[[^0-9]]//g'], 0, [$3
-])])
+AT_PARSER_CHECK([./calc input], $2, [], [stderr])])

 
 # Normalize the observed and expected error messages, depending upon the
 # options.
 
 # Normalize the observed and expected error messages, depending upon the
 # options.


@@ -381,45 +429,70 @@ sed '/^Starting/d
 /^Stack/d
 /^Reading/d
 /^Reducing/d
 /^Stack/d
 /^Reading/d
 /^Reducing/d

+/^Return/d

 /^Shifting/d
 /^state/d
 /^Shifting/d
 /^state/d

+/^Cleanup:/d

 /^Error:/d
 /^Next/d
 /^Error:/d
 /^Next/d

+/^Now/d

 /^Discarding/d
 /^Discarding/d

+/ \$[[0-9$]]* = /d

 /^yydestructor:/d' stderr >at-stderr
 mv at-stderr stderr
 # 2. Create the reference error message.
 AT_DATA([[expout]],
 /^yydestructor:/d' stderr >at-stderr
 mv at-stderr stderr
 # 2. Create the reference error message.
 AT_DATA([[expout]],

-[$4
+[$5

 ])
 # 3. If locations are not used, remove them.
 ])
 # 3. If locations are not used, remove them.

-m4_bmatch([$1], [%locations], [],
+AT_YYERROR_SEES_LOC_IF([],

 [[sed 's/^[-0-9.]*: //' expout >at-expout
 mv at-expout expout]])
 # 4. If error-verbose is not used, strip the`, unexpected....' part.
 [[sed 's/^[-0-9.]*: //' expout >at-expout
 mv at-expout expout]])
 # 4. If error-verbose is not used, strip the`, unexpected....' part.

-m4_bmatch([$1], [%error-verbose], [],
-[[sed 's/parse error, .*$/parse error/' expout >at-expout
+m4_bmatch([$1], [%define parse.error verbose], [],
+[[sed 's/syntax error, .*$/syntax error/' expout >at-expout

 mv at-expout expout]])
 # 5. Check
 AT_CHECK([cat stderr], 0, [expout])
 ])
 
 
 mv at-expout expout]])
 # 5. Check
 AT_CHECK([cat stderr], 0, [expout])
 ])
 
 

+# AT_CHECK_SPACES([FILES])
+# ------------------------
+# Make sure we did not introduce bad spaces.  Checked here because all
+# the skeletons are (or should be) exercized here.
+m4_define([AT_CHECK_SPACES],
+[AT_CHECK([$PERL -ne '
+  chomp;
+  print "$ARGV:$.: {$_}\n"
+    if (# No starting/ending empty lines.
+        (eof || $. == 1) && /^\s*$/
+        # No trailing space.
+        || /\s$/
+        # No tabs.
+        || /\t/
+        )' $1
+])dnl
+])
+
+

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

-[# We use integers to avoid dependencies upon the precision of doubles.
-AT_SETUP([Calculator $1])
+[m4_ifval([$2], [m4_fatal([$0: expected a single argument])])

 
 

-AT_DATA_CALC_Y([$1])
+# We use integers to avoid dependencies upon the precision of doubles.
+AT_SETUP([Calculator $1])

 
 

-# Specify the output files to avoid problems on different file systems.
-AT_CHECK([bison -o calc.c m4_bpatsubst([$1], [%[^ ]*]) calc.y],
-         [0], [], [])
+AT_BISON_OPTION_PUSHDEFS([$1])

 
 

-AT_COMPILE([calc])
+AT_DATA_CALC_Y([$1])
+AT_FULL_COMPILE([calc], AT_DEFINES_IF([[lex], [main]]))
+AT_CHECK_SPACES(m4_join([ ],
+                        [calc.AT_SKEL_CC_IF([cc], [c])],
+                        [AT_DEFINES_IF([calc.AT_SKEL_CC_IF([hh], [h])])]))

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


@@ -435,38 +508,70 @@ _AT_CHECK_CALC([$1],
 1 - (2 - 3) = 2
 
 2^2^3 = 256
 1 - (2 - 3) = 2
 
 2^2^3 = 256

-(2^2)^3 = 64], [486])
-
-# Some parse errors.
-_AT_CHECK_CALC_ERROR([$1], [0 0], [11],
-                     [1.3-1.4: parse error, unexpected "number"])
-_AT_CHECK_CALC_ERROR([$1], [1//2], [15],
-                     [1.3-1.4: parse error, unexpected '/', expecting "number" or '-' or '('])
-_AT_CHECK_CALC_ERROR([$1], [error], [4],
-                     [1.1-1.2: parse error, unexpected $undefined, expecting "number" or '-' or '\n' or '('])
-_AT_CHECK_CALC_ERROR([$1], [1 = 2 = 3], [22],
-                     [1.7-1.8: parse error, unexpected '='])
-_AT_CHECK_CALC_ERROR([$1],
+(2^2)^3 = 64],
+               [842])
+
+# Some syntax errors.
+_AT_CHECK_CALC_ERROR([$1], [1], [1 2], [15],
+                     [1.3: syntax error, unexpected number])
+_AT_CHECK_CALC_ERROR([$1], [1], [1//2], [20],
+                     [1.3: syntax error, unexpected '/', expecting number or '-' or '(' or '!'])
+_AT_CHECK_CALC_ERROR([$1], [1], [error], [5],
+                     [1.1: syntax error, unexpected $undefined])
+_AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [30],
+                     [1.7: syntax error, unexpected '='])
+_AT_CHECK_CALC_ERROR([$1], [1],

                      [
 +1],
                      [
 +1],

-                     [14],
-                     [2.1-2.2: parse error, unexpected '+'])
+                     [20],
+                     [2.1: syntax error, unexpected '+'])

 # Exercise error messages with EOF: work on an empty file.
 # Exercise error messages with EOF: work on an empty file.

-_AT_CHECK_CALC_ERROR([$1], [/dev/null], [4],
-                     [1.1-1.2: parse error, unexpected "end of input", expecting "number" or '-' or '\n' or '('])
+_AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
+                     [1.1: syntax error, unexpected end of input])

 
 # Exercise the error token: without it, we die at the first error,
 
 # Exercise the error token: without it, we die at the first error,

-# hence be sure i. to have several errors, ii. to test the action
-# associated to `error'.
-_AT_CHECK_CALC_ERROR([$1], [(1 ++ 2) + (0 0) = 1], [82],
-[1.5-1.6: parse error, unexpected '+', expecting "number" or '-' or '('
-1.15-1.16: parse error, unexpected "number"
-calc: error: 0 != 1])
-
-# Add a studid example demonstrating that Bison can further improve the
-# error message.  FIXME: Fix this ridiculous message.
-_AT_CHECK_CALC_ERROR([$1], [()], [21],
-[1.2-1.3: parse error, unexpected ')', expecting "number" or '-' or '('])
+# hence be sure to
+#
+# - have several errors which exercise different shift/discardings
+#   - (): nothing to pop, nothing to discard
+#   - (1 + 1 + 1 +): a lot to pop, nothing to discard
+#   - (* * *): nothing to pop, a lot to discard
+#   - (1 + 2 * *): some to pop and discard
+#
+# - test the action associated to `error'
+#
+# - check the lookahead that triggers an error is not discarded
+#   when we enter error recovery.  Below, the lookahead causing the
+#   first error is ")", which is needed to recover from the error and
+#   produce the "0" that triggers the "0 != 1" error.
+#
+_AT_CHECK_CALC_ERROR([$1], [0],
+                     [() + (1 + 1 + 1 +) + (* * *) + (1 * 2 * *) = 1],
+                     [250],
+[1.2: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
+1.18: syntax error, unexpected ')', expecting number or '-' or '(' or '!'
+1.23: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
+1.41: syntax error, unexpected '*', expecting number or '-' or '(' or '!'
+calc: error: 4444 != 1])
+
+# The same, but this time exercising explicitly triggered syntax errors.
+# POSIX says the lookahead causing the error should not be discarded.
+_AT_CHECK_CALC_ERROR([$1], [0], [(!) + (1 2) = 1], [102],
+[1.10: syntax error, unexpected number
+calc: error: 2222 != 1])
+_AT_CHECK_CALC_ERROR([$1], [0], [(- *) + (1 2) = 1], [113],
+[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_CHECK_CALC
 
 AT_CLEANUP
 ])# AT_CHECK_CALC


@@ -478,7 +583,7 @@ AT_CLEANUP
 # Simple LALR Calculator.  #
 # ------------------------ #
 
 # Simple LALR Calculator.  #
 # ------------------------ #
 

-AT_BANNER([[Simple LALR Calculator.]])
+AT_BANNER([[Simple LALR(1) Calculator.]])

 
 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
 # -----------------------------------
 
 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
 # -----------------------------------


@@ -489,22 +594,29 @@ m4_define([AT_CHECK_CALC_LALR],
 
 AT_CHECK_CALC_LALR()
 
 
 AT_CHECK_CALC_LALR()
 

-AT_CHECK_CALC_LALR([--defines])
+AT_CHECK_CALC_LALR([%defines])

 AT_CHECK_CALC_LALR([%locations])
 AT_CHECK_CALC_LALR([%locations])

-AT_CHECK_CALC_LALR([--name-prefix=calc])
-AT_CHECK_CALC_LALR([--verbose])
-AT_CHECK_CALC_LALR([--yacc])
-AT_CHECK_CALC_LALR([%error-verbose])

 
 

-AT_CHECK_CALC_LALR([%error-verbose %locations])
+AT_CHECK_CALC_LALR([%name-prefix "calc"])
+AT_CHECK_CALC_LALR([%verbose])
+AT_CHECK_CALC_LALR([%yacc])
+AT_CHECK_CALC_LALR([%define parse.error verbose])
+
+AT_CHECK_CALC_LALR([%define api.pure full %locations])
+AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure full %locations])
+AT_CHECK_CALC_LALR([%define parse.error verbose %locations])

 
 

-AT_CHECK_CALC_LALR([%error-verbose %locations --defines --name-prefix=calc --verbose --yacc])
+AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %define api.prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_LALR([%define parse.error verbose %locations %defines %name-prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])

 
 AT_CHECK_CALC_LALR([%debug])
 
 AT_CHECK_CALC_LALR([%debug])

-AT_CHECK_CALC_LALR([%error-verbose %debug %locations --defines --name-prefix=calc --verbose --yacc])
+AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_LALR([%define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc])
+
+AT_CHECK_CALC_LALR([%define api.pure full %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_LALR([%define api.push-pull both %define api.pure full %define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc])

 
 

-# FIXME: Not ready yet.
-# AT_CHECK_CALC_LALR([%pure-parser %error-verbose %debug %locations --defines --name-prefix=calc --verbose --yacc])
+AT_CHECK_CALC_LALR([%define api.pure %define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])

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


@@ -523,18 +635,90 @@ m4_define([AT_CHECK_CALC_GLR],
 
 AT_CHECK_CALC_GLR()
 
 
 AT_CHECK_CALC_GLR()
 

-AT_CHECK_CALC_GLR([--defines])
+AT_CHECK_CALC_GLR([%defines])

 AT_CHECK_CALC_GLR([%locations])
 AT_CHECK_CALC_GLR([%locations])

-AT_CHECK_CALC_GLR([--name-prefix=calc])
-AT_CHECK_CALC_GLR([--verbose])
-AT_CHECK_CALC_GLR([--yacc])
-AT_CHECK_CALC_GLR([%error-verbose])
+AT_CHECK_CALC_GLR([%name-prefix "calc"])
+AT_CHECK_CALC_GLR([%define api.prefix "calc"])
+AT_CHECK_CALC_GLR([%verbose])
+AT_CHECK_CALC_GLR([%yacc])
+AT_CHECK_CALC_GLR([%define parse.error verbose])

 
 

-AT_CHECK_CALC_GLR([%error-verbose %locations])
+AT_CHECK_CALC_GLR([%define api.pure %locations])
+AT_CHECK_CALC_GLR([%define parse.error verbose %locations])

 
 

-AT_CHECK_CALC_GLR([%error-verbose %locations --defines --name-prefix=calc --verbose --yacc])
+AT_CHECK_CALC_GLR([%define parse.error verbose %locations %defines %name-prefix "calc" %verbose %yacc])

 
 AT_CHECK_CALC_GLR([%debug])
 
 AT_CHECK_CALC_GLR([%debug])

-AT_CHECK_CALC_GLR([%error-verbose %debug %locations --defines --name-prefix=calc --verbose --yacc])
+AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_GLR([%define parse.error verbose %debug %locations %defines %define api.prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
+
+AT_CHECK_CALC_GLR([%define api.pure %define parse.error verbose %debug %locations %defines %name-prefix "calc" %verbose %yacc])
+
+AT_CHECK_CALC_GLR([%define api.pure %define parse.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 %define parse.error verbose %debug %locations %defines %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
+
+
+# ----------------------------- #
+# Simple LALR1 C++ Calculator.  #
+# ----------------------------- #
+
+AT_BANNER([[Simple LALR(1) C++ Calculator.]])
+
+# First let's try using %skeleton
+AT_CHECK_CALC([%skeleton "lalr1.cc" %defines])
+
+# 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([%language "C++"] $@)])
+
+AT_CHECK_CALC_LALR1_CC([])
+AT_CHECK_CALC_LALR1_CC([%locations])
+AT_CHECK_CALC_LALR1_CC([%locations %define api.location.type Span])
+AT_CHECK_CALC_LALR1_CC([%defines %locations %define parse.error verbose %name-prefix "calc" %verbose %yacc])
+
+AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %define api.prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_LALR1_CC([%locations %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
+
+AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_LALR1_CC([%locations %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])
+
+AT_CHECK_CALC_LALR1_CC([%defines %locations %pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
+
+AT_CHECK_CALC_LALR1_CC([%pure-parser %define parse.error verbose %debug %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
+AT_CHECK_CALC_LALR1_CC([%defines %locations %pure-parser %define parse.error verbose %debug %define api.prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
+
+
+
+# --------------------------- #
+# Simple GLR C++ Calculator.  #
+# --------------------------- #
+
+AT_BANNER([[Simple GLR C++ Calculator.]])
+
+# Again, we try also using %skeleton.
+AT_CHECK_CALC([%skeleton "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([%language "C++" %glr-parser] $@)])
+
+AT_CHECK_CALC_GLR_CC([])
+AT_CHECK_CALC_GLR_CC([%locations])
+AT_CHECK_CALC_GLR_CC([%locations %define api.location.type Span])
+AT_CHECK_CALC_GLR_CC([%defines %define parse.error verbose %name-prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_GLR_CC([%define parse.error verbose %define api.prefix "calc" %verbose %yacc])
+
+AT_CHECK_CALC_GLR_CC([%debug])
+AT_CHECK_CALC_GLR_CC([%define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
+
+AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %verbose %yacc])
+AT_CHECK_CALC_GLR_CC([%pure-parser %define parse.error verbose %debug %name-prefix "calc" %define api.token.prefix "TOK_" %verbose %yacc])

 
 

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