X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/9af3fbce7c5f893ab9cd72b924e154d01f1f9190..dd60572a8b54ebc51421448f09f83f39bc0a4229:/tests/input.at

diff --git a/tests/input.at b/tests/input.at
index 9c223d37..fb571ab6 100644
--- a/tests/input.at
+++ b/tests/input.at
@@ -1,5 +1,5 @@
-# Checking the output filenames.                    -*- Autotest -*-
-# Copyright 2002 Free Software Foundation, Inc.
+# Checking the Bison scanner.                    -*- Autotest -*-
+# Copyright (C) 2002, 2003, 2004, 2005, 2006 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
@@ -13,69 +13,402 @@
 
 # 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.
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
 
 AT_BANNER([[Input Processing.]])
 
 # Mostly test that we are robust to mistakes.
 
+
 ## ------------ ##
 ## Invalid $n.  ##
 ## ------------ ##
 
-AT_SETUP([Invalid $n])
+AT_SETUP([Invalid \$n and @n])
 
 AT_DATA([input.y],
 [[%%
 exp: { $$ = $1 ; };
+exp: { @$ = @1 ; };
 ]])
 
 AT_CHECK([bison input.y], [1], [],
-[[input.y:2: invalid value: $1
+[[input.y:2.13-14: integer out of range: `$1'
+input.y:3.13-14: integer out of range: `@1'
 ]])
 
 AT_CLEANUP
 
 
-## ------------ ##
-## Invalid @n.  ##
-## ------------ ##
+## -------------- ##
+## Type Clashes.  ##
+## -------------- ##
 
-AT_SETUP([Invalid @n])
+AT_SETUP([Type Clashes])
 
 AT_DATA([input.y],
-[[%%
-exp: { @$ = @1 ; };
+[[%union { int bar; }
+%token foo
+%type <bar> exp
+%%
+exp: foo { $$; } foo { $2; } foo
+   | foo
+   | /* Empty. */
+   ;
 ]])
 
 AT_CHECK([bison input.y], [1], [],
-[[input.y:2: invalid value: @1
+[[input.y:5.12-13: $$ for the midrule at $2 of `exp' has no declared type
+input.y:5.24-25: $2 of `exp' has no declared type
+input.y:5.6-32: warning: type clash on default action: <bar> != <>
+input.y:6.6-8: warning: type clash on default action: <bar> != <>
+input.y:7.5: warning: empty rule for typed nonterminal, and no action
 ]])
 
 AT_CLEANUP
 
 
-## -------------- ##
-## Type clashes.  ##
-## -------------- ##
+# _AT_UNUSED_VALUES_DECLARATIONS()
+# --------------------------------------------
+# Generate the token, type, and destructor
+# declarations for the unused values tests.
+
+m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
+[[[%token <integer> INT;
+%type <integer> a b c d e f g h i j k l;
+%destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
+
+
+# AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER)
+# --------------------------------------------
+# Generate a grammar to test unused values,
+# compile it, run it.  If DECLARATIONS_AFTER
+# is set, then the token, type, and destructor
+# declarations are generated after the rules
+# rather than before.
+
+m4_define([AT_CHECK_UNUSED_VALUES],
+[AT_DATA([input.y],
+m4_ifval($1, [
+
+
+], [_AT_UNUSED_VALUES_DECLARATIONS
+])[[%%
+start:
+  'a' a { $]2[ } | 'b' b { $]2[ } | 'c' c { $]2[ } | 'd' d { $]2[ } | 'e' e { $]2[ }
+| 'f' f { $]2[ } | 'g' g { $]2[ } | 'h' h { $]2[ } | 'i' i { $]2[ } | 'j' j { $]2[ }
+| 'k' k { $]2[ } | 'l' l { $]2[ }
+;
+
+a: INT | INT { } INT { } INT { };
+b: INT | /* empty */;
+c: INT | INT { $]1[ } INT { } INT { };
+d: INT | INT { } INT { $]1[ } INT { };
+e: INT | INT { } INT {  } INT { $]1[ };
+f: INT | INT { } INT {  } INT { $]$[ = $]1[ + $]3[ + $]5[; };
+g: INT | INT { $]$[ } INT { $]$[ } INT { };
+h: INT | INT { $]$[ } INT { $]$[ = $]2[ } INT { };
+i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
+j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
+k: INT | INT INT { $]$[; } { $]$[ = $]3[; } { };
+l: INT | INT { $]$[ = $]1[; } INT { $]$[ = $]2[ + $]3[; } INT { $]$[ = $]4[ + $]5[; };]]m4_ifval($1, [
+_AT_UNUSED_VALUES_DECLARATIONS])
+)
+
+AT_CHECK([bison input.y], [0], [],
+[[input.y:11.10-32: warning: unset value: $]$[
+input.y:11.10-32: warning: unused value: $]1[
+input.y:11.10-32: warning: unused value: $]3[
+input.y:11.10-32: warning: unused value: $]5[
+input.y:12.9: warning: empty rule for typed nonterminal, and no action
+input.y:13.10-35: warning: unset value: $]$[
+input.y:13.10-35: warning: unused value: $]3[
+input.y:13.10-35: warning: unused value: $]5[
+input.y:14.10-35: warning: unset value: $]$[
+input.y:14.10-35: warning: unused value: $]3[
+input.y:14.10-35: warning: unused value: $]5[
+input.y:15.10-36: warning: unset value: $]$[
+input.y:15.10-36: warning: unused value: $]3[
+input.y:15.10-36: warning: unused value: $]5[
+input.y:17.10-38: warning: unset value: $]$[
+input.y:17.10-38: warning: unused value: $]1[
+input.y:17.10-38: warning: unused value: $]2[
+input.y:17.10-38: warning: unused value: $]3[
+input.y:17.10-38: warning: unused value: $]4[
+input.y:17.10-38: warning: unused value: $]5[
+input.y:18.10-43: warning: unset value: $]$[
+input.y:18.10-43: warning: unused value: $]1[
+input.y:18.10-43: warning: unused value: $]3[
+input.y:18.10-43: warning: unused value: $]4[
+input.y:18.10-43: warning: unused value: $]5[
+input.y:20.10-55: warning: unused value: $]3[
+input.y:21.10-41: warning: unset value: $]$[
+input.y:21.10-41: warning: unused value: $]1[
+input.y:21.10-41: warning: unused value: $]2[
+input.y:21.10-41: warning: unused value: $]4[
+]])])
+
+
+## --------------- ##
+## Unused values.  ##
+## --------------- ##
+
+AT_SETUP([Unused values])
+AT_CHECK_UNUSED_VALUES
+AT_CLEANUP
 
-AT_SETUP([Type clashes])
+
+## ------------------------------------------ ##
+## Unused values before symbol declarations.  ##
+## ------------------------------------------ ##
+
+AT_SETUP([Unused values before symbol declarations])
+AT_CHECK_UNUSED_VALUES([1])
+AT_CLEANUP
+
+
+## ---------------------- ##
+## Incompatible Aliases.  ##
+## ---------------------- ##
+
+AT_SETUP([Incompatible Aliases])
 
 AT_DATA([input.y],
-[[%token foo
-%type <bar> exp
+[[%token foo "foo"
+
+%type <bar>       foo
+%printer {bar}    foo
+%destructor {bar} foo
+%left             foo
+
+%type <baz>       "foo"
+%printer {baz}    "foo"
+%destructor {baz} "foo"
+%left             "foo"
+
 %%
-exp: foo {} foo
-   | foo
-   | /* Empty. */
-   ;
+exp: foo;
+]])
+
+AT_CHECK([bison input.y], [1], [],
+[[input.y:8.7-11: %type redeclaration for foo
+input.y:3.7-11: previous declaration
+input.y:10.13-17: %destructor redeclaration for foo
+input.y:5.13-17: previous declaration
+input.y:9.10-14: %printer redeclaration for foo
+input.y:4.10-14: previous declaration
+input.y:11.1-5: %left redeclaration for foo
+input.y:6.1-5: previous declaration
+]])
+
+AT_CLEANUP
+
+
+
+## ----------------------- ##
+## Torturing the Scanner.  ##
+## ----------------------- ##
+
+# Be sure to compile and run, so that the C compiler checks what
+# we do.
+
+AT_SETUP([Torturing the Scanner])
+
+
+AT_DATA([input.y], [])
+AT_CHECK([bison input.y], [1], [],
+[[input.y:1.0: syntax error, unexpected end of file
 ]])
 
+
+AT_DATA([input.y],
+[{}
+])
 AT_CHECK([bison input.y], [1], [],
-[[input.y:5: type clash (`bar' `') on default action
-input.y:6: type clash (`bar' `') on default action
-input.y:7: empty rule for typed nonterminal, and no action
+[[input.y:1.0-1: syntax error, unexpected {...}
+]])
+
+
+AT_DATA_GRAMMAR([input.y],
+[[%{
+/* This is seen in GCC: a %{ and %} in middle of a comment. */
+const char *foo = "So %{ and %} can be here too.";
+
+#if 0
+/* These examples test Bison while not stressing C compilers too much.
+   Many C compilers mishandle backslash-newlines, so this part of the
+   test is inside "#if 0".  The comment and string are written so that
+   the "#endif" will be seen regardless of the C compiler bugs that we
+   know about, namely:
+
+     HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
+     comment.
+
+     The Apple Darwin compiler (as of late 2002) mishandles
+     \\[newline]' within a character constant.
+
+   */
+
+/\
+* A comment with backslash-newlines in it. %} *\
+\
+/
+/* { Close the above comment, if the C compiler mishandled it.  */
+
+char str[] = "\\
+" A string with backslash-newlines in it %{ %} \\
+\
+"";
+
+char apostrophe = '\'';
+#endif
+
+#include <stdio.h>
+%}
+/* %{ and %} can be here too. */
+
+%{
+/* Exercise pre-prologue dependency to %union.  */
+typedef int value;
+%}
+
+/* Exercise M4 quoting: '@:>@@:>@', 0.  */
+
+/* Also exercise %union. */
+%union
+{
+  value ival; /* A comment to exercise an old bug. */
+};
+
+
+/* Exercise post-prologue dependency to %union.  */
+%{
+static YYSTYPE value_as_yystype (value val);
+
+/* Exercise quotes in declarations.  */
+char quote[] = "@:>@@:>@,";
+%}
+
+%{
+static void yyerror (const char *s);
+static int yylex (void);
+%}
+
+%type <ival> '@<:@'
+
+/* Exercise quotes in strings.  */
+%token FAKE "fake @<:@@:>@ \a\b\f\n\r\t\v\"\'\?\\\u005B\U0000005c ??!??'??(??)??-??/??<??=??> \x1\1"
+
+%%
+/* Exercise M4 quoting: '@:>@@:>@', @<:@, 1.  */
+exp: '@<:@' '\1' two '$' '@' '{' oline output.or.oline.opt
+  {
+    /* Exercise quotes in braces.  */
+    char tmp[] = "@<:@%c@:>@,\n";
+    printf (tmp, $1);
+  }
+;
+
+two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
+oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
+output.or.oline.opt: ;|oline;;|output;;;
+output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
+%%
+/* Exercise M4 quoting: '@:>@@:>@', @<:@, 2.  */
+
+static YYSTYPE
+value_as_yystype (value val)
+{
+  YYSTYPE res;
+  res.ival = val;
+  return res;
+}
+
+static int
+yylex (void)
+{
+  static const char *input = "@<:@\1\2$@{@oline@__@&t@oline__\
+#output "; /* "
+  */
+  yylval = value_as_yystype (*input);
+  return *input++;
+}
+
+static void
+yyerror (const char *msg)
+{
+  fprintf (stderr, "%s\n", msg);
+}
+]])
+
+# Pacify Emacs'font-lock-mode: "
+
+AT_DATA([main.c],
+[[typedef int value;
+#include "input.h"
+
+int yyparse (void);
+
+int
+main (void)
+{
+  return yyparse ();
+}
+]])
+
+AT_CHECK([bison -d -v -o input.c input.y])
+AT_COMPILE([input.o], [-c input.c])
+AT_COMPILE([main.o], [-c main.c])
+AT_COMPILE([input], [input.o main.o])
+AT_PARSER_CHECK([./input], 0,
+[[[@<:@],
 ]])
 
 AT_CLEANUP
+
+
+## ---------------------- ##
+## Typed symbol aliases.  ##
+## ---------------------- ##
+
+AT_SETUP([Typed symbol aliases])
+
+# Bison 2.0 broke typed symbol aliases - ensure they work.
+
+AT_DATA_GRAMMAR([input.y],
+[[%union
+{
+  int val;
+};
+%token <val> MY_TOKEN "MY TOKEN"
+%type <val> exp
+%%
+exp: "MY TOKEN";
+%%
+]])
+
+AT_CHECK([bison -o input.c input.y])
+
+AT_CLEANUP
+
+
+## --------- ##
+## Require.  ##
+## --------- ##
+
+m4_define([AT_CHECK_REQUIRE],
+[AT_SETUP([Require $1])
+AT_DATA_GRAMMAR([input.y],
+[[%require "$1";
+%%
+empty_file:;
+]])
+AT_CHECK([bison -o input.c input.y], $2, [], ignore)
+AT_CLEANUP
+])
+
+AT_CHECK_REQUIRE(1.0, 0)
+AT_CHECK_REQUIRE(AT_PACKAGE_VERSION, 0)
+## FIXME: Some day augment this version number.
+AT_CHECK_REQUIRE(100.0, 63)