X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7548fed236e50c5ba9933c373a537f1a1dd15224..432ac57aaae89de7a4305dc72c5a5b716c6defc4:/tests/calc.at

diff --git a/tests/calc.at b/tests/calc.at
index a5e64efe..26249088 100644
--- a/tests/calc.at
+++ b/tests/calc.at
@@ -1,20 +1,20 @@
-# Checking the output filenames.                         -*- Autotest -*-
-# Copyright (C) 2000, 2001, 2002, 2003 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, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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, 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.  ##
@@ -37,47 +37,70 @@ m4_define([_AT_DATA_CALC_Y],
        [m4_fatal([$0: Invalid arguments: $@])])dnl
 AT_DATA_GRAMMAR([calc.y],
 [[/* Infix notation calculator--calc */
-]$4[
+]$4
+AT_SKEL_CC_IF(
+[%define global_tokens_and_yystype])[
 %{
 #include <stdio.h>
 
-#if STDC_HEADERS
-# include <stdlib.h>
-# include <string.h>
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#else
+# undef alarm
+# define alarm(seconds) /* empty */
 #endif
 #include <ctype.h>
-
-extern void perror (const char *s);
+#define USE(Var)
 
 /* Exercise pre-prologue dependency to %union.  */
-typedef int value;
+typedef int semantic_value;
 
-static value global_result = 0;
+static semantic_value global_result = 0;
 static int global_count = 0;
-
-]AT_LALR1_CC_IF([typedef yy::Location YYLTYPE;])[
 %}
 
 /* Exercise %union. */
 %union
 {
-  value ival;
+  semantic_value ival;
 };
 
 %{
 static int power (int base, int exponent);
-/* yyerror receives the location if:
+]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
+],
+[/* yyerror receives the location if:
    - %location & %pure & %glr
    - %location & %pure & %yacc & %parse-param. */
-static void yyerror (]AT_YYERROR_ARG_LOC_IF([YYLTYPE *yylloc, ])[
-                     ]AT_PARAM_IF([value *result, int *count, ])[
+static void yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
+                     AT_PARAM_IF([semantic_value *result, int *count, ])
                      const char *s
-                     );
+                     );])[
 static int yylex (]AT_LEX_FORMALS[);
-static int yygetc (]AT_LEX_FORMALS[);
-static void yyungetc (]AT_LEX_PRE_FORMALS[ int c);
+static int get_char (]AT_LEX_FORMALS[);
+static void unget_char (]AT_LEX_PRE_FORMALS[ int c);
 %}
 
+]AT_SKEL_CC_IF(
+[/* The lalr1.cc skeleton, for backward compatibility, defines
+   a constructor for position that initializes the filename.  The
+   glr.cc skeleton does not (and in fact cannot: location/position
+   are stored in a union, from which objects with constructors are
+   excluded in C++. */
+%initial-action {
+  @$.initialize (0);
+}
+])[
+
 /* Bison Declarations */
 %token CALC_EOF 0 "end of input"
 %token <ival> NUM "number"
@@ -98,7 +121,7 @@ input:
 
 line:
   '\n'
-| exp '\n'           { ]AT_PARAM_IF([*result = global_result = $1;])[ }
+| exp '\n'           { ]AT_PARAM_IF([*result = global_result = $1], [USE ($1)])[; }
 ;
 
 exp:
@@ -116,38 +139,36 @@ exp:
 | '-' exp  %prec NEG { $$ = -$2;            }
 | exp '^' exp        { $$ = power ($1, $3); }
 | '(' exp ')'        { $$ = $2;             }
-| '(' error ')'      { $$ = 0;              }
+| '(' error ')'      { $$ = 1111; yyerrok;  }
+| '!'                { $$ = 0; YYERROR;     }
+| '-' error          { $$ = 0; YYERROR;     }
 ;
 %%
-/* The input. */
-static FILE *yyin;
+/* The input.  */
+static FILE *input;
 
-]AT_LALR1_CC_IF(
-[/* Currently, print_ is required in C++. */
+]AT_SKEL_CC_IF(
+[/* A C++ error reporting function.  */
 void
-yy::Parser::print_ ()
+AT_NAME_PREFIX::parser::error (const location& l, const std::string& m)
 {
-  std::cerr << location;
-}
-
-/* A C++ error reporting function. */
-void
-yy::Parser::error_ ()
-{
-  std::cerr << location << ": " << message << std::endl;
+  (void) l;
+  std::cerr << AT_LOCATION_IF([l << ": " << ])m << std::endl;
 }
 
 int
-yyparse (void)
+yyparse (AT_PARAM_IF([semantic_value *result, int *count]))
 {
-  yy::Parser parser = yy::Parser (!!YYDEBUG[]AT_LOCATION_IF([,
-                                  yy::Location::Location ()]));
+  AT_NAME_PREFIX::parser parser[]AT_PARAM_IF([ (result, count)]);
+#if YYDEBUG
+  parser.set_debug_level (1);
+#endif
   return parser.parse ();
 }
 ],
 [static void
-yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *yylloc, ])
-         AT_PARAM_IF([value *result, int *count, ])
+yyerror (AT_YYERROR_ARG_LOC_IF([YYLTYPE *llocp, ])
+         AT_PARAM_IF([semantic_value *result, int *count, ])
          const char *s)
 {
 AT_PARAM_IF([(void) result; (void) count;])
@@ -169,61 +190,56 @@ AT_YYERROR_SEES_LOC_IF([
 static YYLTYPE last_yylloc;
 ])[
 static int
-yygetc (]AT_LEX_FORMALS[)
+get_char (]AT_LEX_FORMALS[)
 {
-  int res = getc (yyin);
+  int res = getc (input);
   ]AT_USE_LEX_ARGS[;
 ]AT_LOCATION_IF([
   last_yylloc = AT_LOC;
   if (res == '\n')
     {
-AT_LALR1_CC_IF(
-[     AT_LOC.end.line++;
-      AT_LOC.end.column = 0;],
-[     AT_LOC.last_line++;
-      AT_LOC.last_column = 0;])
+      AT_LOC.last_line++;
+      AT_LOC.last_column = 1;
     }
   else
-AT_LALR1_CC_IF(
-[    AT_LOC.end.column++;],
-[    AT_LOC.last_column++;])
+    AT_LOC.last_column++;
 ])[
   return res;
 }
 
 
 static void
-yyungetc (]AT_LEX_PRE_FORMALS[ int c)
+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, yyin);
+  ungetc (c, input);
 }
 
 static int
 read_signed_integer (]AT_LEX_FORMALS[)
 {
-  int c = yygetc (]AT_LEX_ARGS[);
+  int c = get_char (]AT_LEX_ARGS[);
   int sign = 1;
   int n = 0;
 
   ]AT_USE_LEX_ARGS[;
   if (c == '-')
     {
-      c = yygetc (]AT_LEX_ARGS[);
+      c = get_char (]AT_LEX_ARGS[);
       sign = -1;
     }
 
   while (isdigit (c))
     {
       n = 10 * n + (c - '0');
-      c = yygetc (]AT_LEX_ARGS[);
+      c = get_char (]AT_LEX_ARGS[);
     }
 
-  yyungetc (]AT_LEX_PRE_ARGS[ c);
+  unget_char (]AT_LEX_PRE_ARGS[ c);
 
   return sign * n;
 }
@@ -245,35 +261,30 @@ yylex (]AT_LEX_FORMALS[)
   if (init)
     {
       init = 0;
-]AT_LALR1_CC_IF([],
-[AT_LOCATION_IF([
-      AT_LOC.last_column = 0;
+]AT_LOCATION_IF([
+      AT_LOC.last_column = 1;
       AT_LOC.last_line = 1;
-])])[
+])[
     }
 
-]AT_LALR1_CC_IF(
-[ AT_LOC.begin = AT_LOC.end;],
-[AT_LOCATION_IF([
-  AT_LOC.first_column = AT_LOC.last_column;
+]AT_LOCATION_IF([
+ AT_LOC.first_column = AT_LOC.last_column;
   AT_LOC.first_line   = AT_LOC.last_line;
-])])[
+])[
 
   /* Skip white space.  */
-  while ((c = yygetc (]AT_LEX_ARGS[)) == ' ' || c == '\t')
+  while ((c = get_char (]AT_LEX_ARGS[)) == ' ' || c == '\t')
     {
-]AT_LALR1_CC_IF(
-[     AT_LOC.begin = AT_LOC.end;],
-[AT_LOCATION_IF([
-      AT_LOC.first_column = AT_LOC.last_column;
+]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))
     {
-      yyungetc (]AT_LEX_PRE_ARGS[ c);
+      unget_char (]AT_LEX_PRE_ARGS[ c);
       ]AT_VAL[.ival = read_signed_integer (]AT_LEX_ARGS[);
       return NUM;
     }
@@ -291,7 +302,7 @@ power (int base, int exponent)
 {
   int res = 1;
   if (exponent < 0)
-    exit (1);
+    exit (3);
   for (/* Niente */; exponent; --exponent)
     res *= base;
   return res;
@@ -301,25 +312,30 @@ power (int base, int exponent)
 int
 main (int argc, const char **argv)
 {
-  value result = 0;
+  semantic_value result = 0;
   int count = 0;
   int status;
 
+  /* 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);
+
   if (argc == 2)
-    yyin = fopen (argv[1], "r");
+    input = fopen (argv[1], "r");
   else
-    yyin = stdin;
+    input = stdin;
 
-  if (!yyin)
+  if (!input)
     {
       perror (argv[1]);
-      exit (1);
+      return 3;
     }
 
-#if YYDEBUG
-  yydebug = 1;
-#endif
-  status = yyparse (]AT_PARAM_IF([&result, &count])[);
+]AT_SKEL_CC_IF([], [m4_bmatch([$4], [%debug],
+[  yydebug = 1;])])[
+  status = yyparse (]AT_PARAM_IF([[&result, &count]])[);
+  fclose (input);
   if (global_result != result)
     abort ();
   if (global_count != count)
@@ -339,12 +355,14 @@ m4_define([AT_DATA_CALC_Y],
 
 
 
-# _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
+#
 # 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.
@@ -353,17 +371,11 @@ m4_define([_AT_CHECK_CALC],
 [[$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, EXIT-STATUS, INPUT,
-#                      [NUM-DEBUG-LINES],
+#                      [NUM-STDERR-LINES],
 #                      [VERBOSE-AND-LOCATED-ERROR-MESSAGE])
 # ---------------------------------------------------------
 # Run `calc' on INPUT, and expect a `syntax error' message.
@@ -371,6 +383,9 @@ m4_bmatch([$1],
 # If INPUT starts with a slash, it is used as absolute input file name,
 # otherwise as contents.
 #
+# 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.
 #
@@ -387,12 +402,6 @@ m4_define([_AT_CHECK_CALC_ERROR],
 [[$3
 ]])
 AT_PARSER_CHECK([./calc input], $2, [], [stderr])])
-m4_bmatch([$1],
-  [%debug.*%glr\|%glr.*%debug],
-     [],
-  [%debug],
-     [AT_CHECK([wc -l <stderr | sed 's/[[^0-9]]//g'], 0, [$4
-])])
 
 # Normalize the observed and expected error messages, depending upon the
 # options.
@@ -402,11 +411,15 @@ sed '/^Starting/d
 /^Stack/d
 /^Reading/d
 /^Reducing/d
+/^Return/d
 /^Shifting/d
 /^state/d
+/^Cleanup:/d
 /^Error:/d
 /^Next/d
+/^Now/d
 /^Discarding/d
+/ \$[[0-9$]]* = /d
 /^yydestructor:/d' stderr >at-stderr
 mv at-stderr stderr
 # 2. Create the reference error message.
@@ -426,117 +439,26 @@ AT_CHECK([cat stderr], 0, [expout])
 ])
 
 
-# AT_CALC_PUSHDEFS($1, $2, [BISON-OPTIONS])
-# -----------------------------------------
-# This macro works around the impossibility to define macros
-# inside macros, because issuing `[$1]' is not possible in M4 :(.
-# This sucks hard, GNU M4 should really provide M5 like $$1.
-m4_define([AT_CHECK_PUSHDEFS],
-[m4_if([$1$2], $[1]$[2], [],
-       [m4_fatal([$0: Invalid arguments: $@])])dnl
-m4_pushdef([AT_LALR1_CC_IF],
-[m4_bmatch([$3], ["lalr1.cc"], [$1], [$2])])
-m4_pushdef([AT_GLR_IF],
-[m4_bmatch([$3], [%glr-parser], [$1], [$2])])
-m4_pushdef([AT_PARAM_IF],
-[m4_bmatch([$3], [%parse-param], [$1], [$2])])
-m4_pushdef([AT_LOCATION_IF],
-[m4_bmatch([$3], [%locations], [$1], [$2])])
-m4_pushdef([AT_PURE_IF],
-[m4_bmatch([$3], [%pure-parser], [$1], [$2])])
-m4_pushdef([AT_PURE_AND_LOC_IF],
-[m4_bmatch([$3], [%locations.*%pure-parser\|%pure-parser.*%locations],
-           [$1], [$2])])
-m4_pushdef([AT_GLR_OR_PARAM_IF],
-[m4_bmatch([$3], [%glr-parser\|%parse-param], [$1], [$2])])
-
-# yyerror receives the location if %location & %pure & (%glr or %parse-param).
-m4_pushdef([AT_YYERROR_ARG_LOC_IF],
-[AT_GLR_OR_PARAM_IF([AT_PURE_AND_LOC_IF([$1], [$2])],
-                    [$2])])
-# yyerror cannot see the locations if !glr & pure & !param.
-m4_pushdef([AT_YYERROR_SEES_LOC_IF],
-[AT_LALR1_CC_IF([$1],
-                [AT_LOCATION_IF([AT_GLR_IF([$1],
-                                           [AT_PURE_IF([AT_PARAM_IF([$1],
-                                                                    [$2])],
-                                                       [$1])])],
-                                [$2])])])
-
-# The interface is pure: either because %pure-parser, or because we
-# are using the C++ parsers.
-m4_pushdef([AT_PURE_LEX_IF],
-[AT_PURE_IF([$1],
-            [AT_LALR1_CC_IF([$1], [$2])])])
-
-AT_PURE_LEX_IF(
-[m4_pushdef([AT_LOC], [(*yylloc)])
- m4_pushdef([AT_VAL], [(*yylval)])
- m4_pushdef([AT_LEX_FORMALS],
-            [YYSTYPE *yylval[]AT_LOCATION_IF([, YYLTYPE *yylloc])])
- m4_pushdef([AT_LEX_ARGS],
-            [yylval[]AT_LOCATION_IF([, yylloc])])
- m4_pushdef([AT_USE_LEX_ARGS],
-            [(void) yylval;AT_LOCATION_IF([(void) yylloc])])
- m4_pushdef([AT_LEX_PRE_FORMALS],
-            [AT_LEX_FORMALS, ])
- m4_pushdef([AT_LEX_PRE_ARGS],
-            [AT_LEX_ARGS, ])
-],
-[m4_pushdef([AT_LOC], [(yylloc)])
- m4_pushdef([AT_VAL], [(yylval)])
- m4_pushdef([AT_LEX_FORMALS],     [void])
- m4_pushdef([AT_LEX_ARGS],        [])
- m4_pushdef([AT_USE_LEX_ARGS],    [])
- m4_pushdef([AT_LEX_PRE_FORMALS], [])
- m4_pushdef([AT_LEX_PRE_ARGS],    [])
-])
-])# AT_CALC_PUSHDEFS
-
-
-# AT_CALC_POPDEFS
-# ---------------
-m4_define([AT_CHECK_POPDEFS],
-[m4_popdef([AT_LEX_PRE_ARGS])
-m4_popdef([AT_LEX_PRE_FORMALS])
-m4_popdef([AT_USE_LEX_ARGS])
-m4_popdef([AT_LEX_ARGS])
-m4_popdef([AT_LEX_FORMALS])
-m4_popdef([AT_VAL])
-m4_popdef([AT_LOC])
-m4_popdef([AT_PURE_LEX_IF])
-m4_popdef([AT_YYERROR_SEES_LOC_IF])
-m4_popdef([AT_YYERROR_ARG_LOC_IF])
-m4_popdef([AT_GLR_OR_PARAM_IF])
-m4_popdef([AT_PURE_AND_LOC_IF])
-m4_popdef([AT_LOCATION_IF])
-m4_popdef([AT_PARAM_IF])
-m4_popdef([AT_GLR_IF])
-m4_popdef([AT_LALR1_CC_IF])
-])
-
-
-
-# AT_CHECK_CALC([BISON-OPTIONS])
-# ------------------------------
+# AT_CHECK_CALC([BISON-OPTIONS, [EXPECTED-TO-FAIL]])
+# --------------------------------------------------
 # Start a testing chunk which compiles `calc' grammar with
 # BISON-OPTIONS, and performs several tests over the parser.
+# However, if EXPECTED-TO-FAIL is nonempty, this test is expected to fail.
 m4_define([AT_CHECK_CALC],
 [# We use integers to avoid dependencies upon the precision of doubles.
 AT_SETUP([Calculator $1])
 
-AT_CHECK_PUSHDEFS($[1], $[2], [$1])
+m4_ifval([$2], [AT_CHECK([exit 77])])
 
-AT_DATA_CALC_Y([$1])
+AT_BISON_OPTION_PUSHDEFS([$1])
 
-# Specify the output files to avoid problems on different file systems.
-AT_CHECK([bison -o calc.c calc.y],
-         [0], [], [])
+AT_DATA_CALC_Y([$1])
 
-AT_LALR1_CC_IF(
-[AT_CHECK([$CXX --version || exit 77], 0, ignore, ignore)
-AT_COMPILE_CXX([calc])],
-[AT_COMPILE([calc])])
+AT_SKEL_CC_IF(
+  [AT_BISON_CHECK([-o calc.cc calc.y])
+   AT_COMPILE_CXX([calc])],
+  [AT_BISON_CHECK([-o calc.c calc.y])
+   AT_COMPILE([calc])])
 
 # Test the priorities.
 _AT_CHECK_CALC([$1],
@@ -553,35 +475,69 @@ _AT_CHECK_CALC([$1],
 
 2^2^3 = 256
 (2^2)^3 = 64],
-               [486])
+               [842])
 
 # Some syntax errors.
-_AT_CHECK_CALC_ERROR([$1], [1], [0 0], [11],
-                     [1.2: syntax error, unexpected "number"])
-_AT_CHECK_CALC_ERROR([$1], [1], [1//2], [15],
-                     [1.2: syntax error, unexpected '/', expecting "number" or '-' or '('])
-_AT_CHECK_CALC_ERROR([$1], [1], [error], [4],
-                     [1.0: syntax error, unexpected $undefined, expecting "number" or '-' or '\n' or '('])
-_AT_CHECK_CALC_ERROR([$1], [1], [1 = 2 = 3], [22],
-                     [1.6: syntax error, unexpected '='])
+_AT_CHECK_CALC_ERROR([$1], [1], [0 0], [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],
-                     [14],
-                     [2.0: syntax error, unexpected '+'])
+                     [20],
+                     [2.1: syntax error, unexpected '+'])
 # Exercise error messages with EOF: work on an empty file.
 _AT_CHECK_CALC_ERROR([$1], [1], [/dev/null], [4],
-                     [1.0: syntax error, unexpected "end of input", expecting "number" or '-' or '\n' or '('])
+                     [1.1: syntax error, unexpected end of input])
 
 # 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], [0], [(1 ++ 2) + (0 0) = 1], [82],
-[1.4: syntax error, unexpected '+', expecting "number" or '-' or '('
-1.14: syntax error, unexpected "number"
-calc: error: 0 != 1])
-
-AT_CHECK_POPDEFS
+# 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], [(!) + (0 0) = 1], [102],
+[1.10: syntax error, unexpected number
+calc: error: 2222 != 1])
+_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])
+
+# 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
@@ -593,7 +549,7 @@ AT_CLEANUP
 # Simple LALR Calculator.  #
 # ------------------------ #
 
-AT_BANNER([[Simple LALR Calculator.]])
+AT_BANNER([[Simple LALR(1) Calculator.]])
 
 # AT_CHECK_CALC_LALR([BISON-OPTIONS])
 # -----------------------------------
@@ -606,21 +562,24 @@ AT_CHECK_CALC_LALR()
 
 AT_CHECK_CALC_LALR([%defines])
 AT_CHECK_CALC_LALR([%locations])
-AT_CHECK_CALC_LALR([%name-prefix="calc"])
+AT_CHECK_CALC_LALR([%name-prefix="calc"]) dnl test deprecated `='
 AT_CHECK_CALC_LALR([%verbose])
 AT_CHECK_CALC_LALR([%yacc])
 AT_CHECK_CALC_LALR([%error-verbose])
 
+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 %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([%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([%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 {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}])
 
 
 # ----------------------- #
@@ -641,53 +600,73 @@ AT_CHECK_CALC_GLR()
 
 AT_CHECK_CALC_GLR([%defines])
 AT_CHECK_CALC_GLR([%locations])
-AT_CHECK_CALC_GLR([%name-prefix="calc"])
+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([%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 %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([%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 {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}])
 
 
 # ----------------------------- #
 # Simple LALR1 C++ Calculator.  #
 # ----------------------------- #
 
-AT_BANNER([[Simple LALR1 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
-# BISON-OPTIONS and %glr-parser, and performs several tests over the parser.
+# the C++ skeleton, and performs several tests over the parser.
 m4_define([AT_CHECK_CALC_LALR1_CC],
-[AT_CHECK_CALC([%skeleton "lalr1.cc"] $@)])
+[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([%error-verbose %debug %name-prefix "calc" %verbose %yacc])
 
-# AT_CHECK_CALC_LALR1_CC()
+AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %name-prefix "calc" %verbose %yacc])
 
-AT_CHECK_CALC_LALR1_CC([%defines %pure-parser %locations])
-# AT_CHECK_CALC_LALR1_CC([%defines])
-# AT_CHECK_CALC_LALR1_CC([%locations])
-# AT_CHECK_CALC_LALR1_CC([%name-prefix="calc"])
-# AT_CHECK_CALC_LALR1_CC([%verbose])
-# AT_CHECK_CALC_LALR1_CC([%yacc])
-# AT_CHECK_CALC_LALR1_CC([%error-verbose])
+AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])
 
-# AT_CHECK_CALC_LALR1_CC([%error-verbose %locations])
 
-# AT_CHECK_CALC_LALR1_CC([%error-verbose %locations %defines %name-prefix="calc" %verbose %yacc])
 
-# AT_CHECK_CALC_LALR1_CC([%debug])
-# AT_CHECK_CALC_LALR1_CC([%error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
+# --------------------------- #
+# 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([%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([%debug])
+AT_CHECK_CALC_GLR_CC([%error-verbose %debug %name-prefix "calc" %verbose %yacc])
 
-# AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc])
+AT_CHECK_CALC_GLR_CC([%pure-parser %error-verbose %debug %name-prefix "calc" %verbose %yacc])
 
-# AT_CHECK_CALC_LALR1_CC([%pure-parser %error-verbose %debug %locations %defines %name-prefix="calc" %verbose %yacc %parse-param {value *result} %parse-param {int *count}])
+AT_CHECK_CALC_GLR_CC([%pure-parser %error-verbose %debug %name-prefix "calc" %verbose %yacc %parse-param {semantic_value *result} %parse-param {int *count}])