Have Bison grammars parsed by a Bison grammar.

[bison.git] / tests / calc.at

diff --git a/tests/calc.at b/tests/calc.at
index db308dfdb699865fdda859874c2c480dd7c12a4b..28e16f956a5096fb7bb3d92bbd90dada2fac5543 100644 (file)
--- a/tests/calc.at
+++ b/tests/calc.at
@@ -1,5 +1,5 @@
 # Checking the output filenames.                         -*- Autotest -*-
 # Checking the output filenames.                         -*- Autotest -*-

-# Copyright 2000, 2001 Free Software Foundation, Inc.
+# Copyright (C) 2000, 2001, 2002 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
 
 # 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


@@ -61,11 +61,35 @@ static int yygetc (void);
 static void yyungetc (int c);
 
 extern void perror (const char *s);
 static void yyungetc (int c);
 
 extern void perror (const char *s);

+
+/* Exercise pre-prologue dependency to %union.  */
+typedef int value_t;
+
+%}
+
+/* Exercise M4 quoting: '@:>@@:>@', 0.  */
+
+/* Also exercise %union. */
+%union
+{
+  value_t ival; /* A comment to exercise an old bug. */
+};
+
+/* Exercise post-prologue dependency to %union.  */
+%{
+static void id (YYSTYPE *lval);
+
+/* Exercise quotes in declarations.  */
+char quote[] = "@:>@@:>@,";

 %}
 
 /* Bison Declarations */
 %token CALC_EOF 0 "end of file"
 %}
 
 /* Bison Declarations */
 %token CALC_EOF 0 "end of file"

-%token NUM "number"
+%token <ival> NUM "number"
+%type  <ival> exp
+
+/* Exercise quotes in strings.  */
+%token FAKE "fake @>:@@>:@,"

 
 %nonassoc '=' /* comparison           */
 %left '-' '+'
 
 %nonassoc '=' /* comparison           */
 %left '-' '+'


@@ -85,14 +109,19 @@ input:
 line:
   '\n'
 | exp '\n'
 line:
   '\n'
 | exp '\n'

+  {
+    /* Exercise quotes in braces.  */
+    char tmp[] = "@>:@@:>@,";
+  }

 ;
 
 ;
 

+/* Exercise M4 quoting: '@:>@@:>@', 1.  */

 exp:
   NUM                { $$ = $1;             }
 | exp '=' exp
   {
      if ($1 != $3)
 exp:
   NUM                { $$ = $1;             }
 | exp '=' exp
   {
      if ($1 != $3)

-       printf ("calc: error: %d != %d\n", $1, $3);
+       fprintf (stderr, "calc: error: %d != %d\n", $1, $3);

      $$ = $1 == $3;
   }
 | exp '+' exp        { $$ = $1 + $3;        }
      $$ = $1 == $3;
   }
 | exp '+' exp        { $$ = $1 + $3;        }


@@ -102,16 +131,18 @@ exp:
 | '-' exp  %prec NEG { $$ = -$2;            }
 | exp '^' exp        { $$ = power ($1, $3); }
 | '(' exp ')'        { $$ = $2;             }
 | '-' exp  %prec NEG { $$ = -$2;            }
 | exp '^' exp        { $$ = power ($1, $3); }
 | '(' exp ')'        { $$ = $2;             }

+| '(' error ')'      { $$ = 0;              }

 ;
 %%
 /* The input. */
 FILE *yyin;
 
 ;
 %%
 /* The input. */
 FILE *yyin;
 

+/* Exercise M4 quoting: '@:>@@:>@', 2.  */

 static void
 yyerror (const char *s)
 {
 #if YYLSP_NEEDED
 static void
 yyerror (const char *s)
 {
 #if YYLSP_NEEDED

-  fprintf (stderr, "%d.%d:%d.%d: ",
+  fprintf (stderr, "%d.%d-%d.%d: ",

           yylloc.first_line, yylloc.first_column,
           yylloc.last_line, yylloc.last_column);
 #endif
           yylloc.first_line, yylloc.first_column,
           yylloc.last_line, yylloc.last_column);
 #endif


@@ -131,7 +162,7 @@ yygetc (void)
   if (res == '\n')
     {
       yylloc.last_line++;
   if (res == '\n')
     {
       yylloc.last_line++;

-      yylloc.last_column = 0;
+      yylloc.last_column = 1;

     }
   else
     yylloc.last_column++;
     }
   else
     yylloc.last_column++;


@@ -205,7 +236,7 @@ yylex (void)
   if (c == '.' || isdigit (c))
     {
       yyungetc (c);
   if (c == '.' || isdigit (c))
     {
       yyungetc (c);

-      yylval = read_signed_integer ();
+      yylval.ival = read_signed_integer ();

       return NUM;
     }
 
       return NUM;
     }
 


@@ -228,6 +259,11 @@ power (int base, int exponent)
   return res;
 }
 
   return res;
 }
 

+void
+id (YYSTYPE* lval)
+{
+}
+

 int
 main (int argc, const char **argv)
 {
 int
 main (int argc, const char **argv)
 {


@@ -248,7 +284,7 @@ main (int argc, const char **argv)
   yydebug = 1;
 #endif
 #if YYLSP_NEEDED
   yydebug = 1;
 #endif
 #if YYLSP_NEEDED

-  yylloc.last_column = 0;
+  yylloc.last_column = 1;

   yylloc.last_line = 1;
 #endif
   yyparse ();
   yylloc.last_line = 1;
 #endif
   yyparse ();


@@ -278,7 +314,7 @@ m4_define([_AT_CHECK_CALC],
 [AT_DATA([[input]],
 [[$2
 ]])
 [AT_DATA([[input]],
 [[$2
 ]])

-AT_CHECK([calc input], 0, [], [stderr])dnl
+AT_CHECK([./calc input], 0, [], [stderr])dnl

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


@@ -305,28 +341,35 @@ AT_CHECK([wc -l <stderr | sed 's/[[^0-9]]//g'], 0,
 # of expected lines on stderr.
 m4_define([_AT_CHECK_CALC_ERROR],
 [m4_bmatch([$2], [^/],
 # of expected lines on stderr.
 m4_define([_AT_CHECK_CALC_ERROR],
 [m4_bmatch([$2], [^/],

-           [AT_CHECK([calc $2], 0, [], [stderr])],
+           [AT_CHECK([./calc $2], 0, [], [stderr])],

            [AT_DATA([[input]],
 [[$2
 ]])
            [AT_DATA([[input]],
 [[$2
 ]])

-AT_CHECK([calc input], 0, [], [stderr])])
-
+AT_CHECK([./calc input], 0, [], [stderr])])

 
 

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

 
 

-egrep -v '^((Start|Enter|Read|Reduc|Shift)ing|state|Error:) ' stderr >at-stderr
+# Normalize the observed and expected error messages, depending upon the
+# options.
+# 1. Remove the traces from observed.
+egrep -v '^((Start|Enter|Read|Reduc|Shift)ing|state|Error:|Next|Discarding) ' stderr >at-stderr

 mv at-stderr stderr
 mv at-stderr stderr

-
-AT_CHECK([cat stderr], 0,
-[m4_bmatch([$1], [--location], [$4: ])[]dnl
-parse error[]dnl
-m4_bmatch([$1], [--yyerror-verbose], [, $5])[]dnl
-
+# 2. Create the reference error message.
+AT_DATA([[expout]],
+[$4

 ])
 ])

-
+# 3. If locations are not used, remove them.
+m4_bmatch([$1], [--location], [],
+[[sed 's/^[-0-9.]*: //' expout >at-expout
+mv at-expout expout]])
+# 4. If error-verbose is not used, strip the`, unexpected....' part.
+m4_bmatch([$1], [--yyerror-verbose], [],
+[[sed 's/parse error, .*$/parse error/' expout >at-expout
+mv at-expout expout]])
+# 5. Check
+AT_CHECK([cat stderr], 0, [expout])

 ])
 
 
 ])
 
 


@@ -344,17 +387,6 @@ AT_DATA_CALC_Y([$1])
 AT_CHECK([bison calc.y -o calc.c m4_bpatsubst([$1], [--yyerror-verbose])],
          [0], [], [])
 
 AT_CHECK([bison calc.y -o calc.c m4_bpatsubst([$1], [--yyerror-verbose])],
          [0], [], [])
 

-# Some compilers issue warnings we don't want to hear about.
-# Maybe some day we will have proper Autoconf macros to disable these
-# warnings, but this place is not the right one for that.
-# So let's keep only GCC warnings, which we know are sane.
-# Well, that's only part of the story: some assemblers issue warnings
-# which can be totally useless, and actually polluting.  It seems that
-# the best bet be to completely ignore stderr, but to pass -Werror
-# to GCC.
-if test "$GCC" = yes; then
-  CFLAGS="$CFLAGS -Werror"
-fi

 AT_CHECK([$CC $CFLAGS $CPPFLAGS calc.c -o calc], 0, [], [ignore])
 
 # Test the priorities.
 AT_CHECK([$CC $CFLAGS $CPPFLAGS calc.c -o calc], 0, [], [ignore])
 
 # Test the priorities.


@@ -374,30 +406,41 @@ _AT_CHECK_CALC([$1],
 (2^2)^3 = 64], [486])
 
 # Some parse errors.
 (2^2)^3 = 64], [486])
 
 # Some parse errors.

-_AT_CHECK_CALC_ERROR([$1], [0 0], [10],
-                     [1.2:1.3],
-                     [unexpected "number"])
-_AT_CHECK_CALC_ERROR([$1], [1//2], [13],
-                     [1.2:1.3],
-                     [unexpected '/', expecting "number" or '-' or '('])
+_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],
 _AT_CHECK_CALC_ERROR([$1], [error], [4],

-                     [1.0:1.1],
-                     [unexpected $undefined., expecting "number" or '-' or '\n' or '('])
-_AT_CHECK_CALC_ERROR([$1], [1 = 2 = 3], [19],
-                     [1.6:1.7],
-                     [unexpected '='])
+                     [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],
                      [
 +1],
 _AT_CHECK_CALC_ERROR([$1],
                      [
 +1],

-                     [13],
-                     [2.0:2.1],
-                     [unexpected '+'])
+                     [14],
+                     [2.1-2.2: parse error, unexpected '+'])

 # Exercise error messages with EOF: work on an empty file.
 _AT_CHECK_CALC_ERROR([$1],
                      [/dev/null],
                      [4],
 # Exercise error messages with EOF: work on an empty file.
 _AT_CHECK_CALC_ERROR([$1],
                      [/dev/null],
                      [4],

-                     [1.0:1.1],
-                     [unexpected "end of file", expecting "number" or '-' or '\n' or '('])
+                     [1.1-1.2: parse error, unexpected "end of file", expecting "number" or '-' or '\n' or '('])
+
+# 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 error or "number" or '-' or '('])

 
 AT_CLEANUP
 ])# AT_CHECK_CALC
 
 AT_CLEANUP
 ])# AT_CHECK_CALC