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https://git.savannah.gnu.org/git/bison.git
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8893145a0c
Some consistency checks on symbols are performed after all the symbols were read, by an iteration over the symbol table. This traversal is nondeterministic, which can be a problem for test cases. Avoid this. Addresses another form of nondeterminism reported by Joel E. Denny. http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00023.html * tests/input.at (Numbered tokens): Split the hexadecimal/decimal test in two. Use different file names for the three tests to make the maintenance easier.
1160 lines
28 KiB
Plaintext
1160 lines
28 KiB
Plaintext
# Checking the Bison scanner. -*- Autotest -*-
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# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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# Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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AT_BANNER([[Input Processing.]])
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# Mostly test that we are robust to mistakes.
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## ------------ ##
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## Invalid $n. ##
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## ------------ ##
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AT_SETUP([Invalid $n and @n])
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AT_DATA([input.y],
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[[%%
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exp: { $$ = $1 ; };
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exp: { @$ = @1 ; };
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]])
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AT_BISON_CHECK([input.y], [1], [],
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[[input.y:2.13-14: integer out of range: `$1'
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input.y:3.13-14: integer out of range: `@1'
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]])
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AT_CLEANUP
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## -------------- ##
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## Type Clashes. ##
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## -------------- ##
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AT_SETUP([Type Clashes])
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AT_DATA([input.y],
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[[%union { int bar; }
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%token foo
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%type <bar> exp
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%%
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exp: foo { $$; } foo { $2; } foo
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| foo
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| /* Empty. */
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;
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]])
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AT_BISON_CHECK([input.y], [1], [],
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[[input.y:5.12-13: $$ for the midrule at $2 of `exp' has no declared type
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input.y:5.24-25: $2 of `exp' has no declared type
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input.y:5.6-32: warning: type clash on default action: <bar> != <>
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input.y:6.6-8: warning: type clash on default action: <bar> != <>
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input.y:7.5: warning: empty rule for typed nonterminal, and no action
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]])
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AT_CLEANUP
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# _AT_UNUSED_VALUES_DECLARATIONS()
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# --------------------------------
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# Generate the token, type, and destructor
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# declarations for the unused values tests.
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m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
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[[[%token <integer> INT;
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%type <integer> a b c d e f g h i j k l;
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%destructor { destroy ($$); } INT a b c d e f g h i j k l;]]])
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# AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
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# ----------------------------------------------------------------
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# Generate a grammar to test unused values, compile it, run it. If
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# DECLARATIONS_AFTER is set, then the token, type, and destructor
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# declarations are generated after the rules rather than before. If
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# CHECK_MIDRULE_VALUES is set, then --warnings=midrule-values is set.
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m4_define([AT_CHECK_UNUSED_VALUES],
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[AT_DATA([input.y],
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m4_ifval($1, [
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], [_AT_UNUSED_VALUES_DECLARATIONS
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])[[%%
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start:
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'a' a { $]2[; } | 'b' b { $]2[; } | 'c' c { $]2[; } | 'd' d { $]2[; }
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| 'e' e { $]2[; } | 'f' f { $]2[; } | 'g' g { $]2[; } | 'h' h { $]2[; }
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| 'i' i { $]2[; } | 'j' j { $]2[; } | 'k' k { $]2[; } | 'l' l { $]2[; }
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;
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a: INT | INT { } INT { } INT { };
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b: INT | /* empty */;
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c: INT | INT { $]1[; } INT { $<integer>2; } INT { $<integer>4; };
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d: INT | INT { } INT { $]1[; } INT { $<integer>2; };
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e: INT | INT { } INT { } INT { $]1[; };
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f: INT | INT { } INT { } INT { $]$[ = $]1[ + $]3[ + $]5[; };
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g: INT | INT { $<integer>$; } INT { $<integer>$; } INT { };
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h: INT | INT { $<integer>$; } INT { $<integer>$ = $<integer>2; } INT { };
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i: INT | INT INT { } { $]$[ = $]1[ + $]2[; };
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j: INT | INT INT { $<integer>$ = 1; } { $]$[ = $]1[ + $]2[; };
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k: INT | INT INT { $<integer>$; } { $<integer>$ = $<integer>3; } { };
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l: INT | INT { $<integer>$ = $<integer>1; } INT { $<integer>$ = $<integer>2 + $<integer>3; } INT { $<integer>$ = $<integer>4 + $<integer>5; };]]m4_ifval($1, [
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_AT_UNUSED_VALUES_DECLARATIONS])
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)
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AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
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[[input.y:11.10-32: warning: unset value: $]$[
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input.y:11.10-32: warning: unused value: $]1[
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input.y:11.10-32: warning: unused value: $]3[
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input.y:11.10-32: warning: unused value: $]5[
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input.y:12.9: warning: empty rule for typed nonterminal, and no action
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]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$
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input.y:13.26-41: warning: unset value: $$
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]]])[[input.y:13.10-62: warning: unset value: $]$[
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input.y:13.10-62: warning: unused value: $]3[
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input.y:13.10-62: warning: unused value: $]5[
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]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
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]]])[[input.y:14.10-49: warning: unset value: $]$[
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input.y:14.10-49: warning: unused value: $]3[
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input.y:14.10-49: warning: unused value: $]5[
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input.y:15.10-37: warning: unset value: $]$[
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input.y:15.10-37: warning: unused value: $]3[
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input.y:15.10-37: warning: unused value: $]5[
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input.y:17.10-58: warning: unset value: $]$[
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input.y:17.10-58: warning: unused value: $]1[
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]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
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]]])[[input.y:17.10-58: warning: unused value: $]3[
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]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
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]]])[[input.y:17.10-58: warning: unused value: $]5[
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input.y:18.10-72: warning: unset value: $]$[
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input.y:18.10-72: warning: unused value: $]1[
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input.y:18.10-72: warning: unused value: $]3[
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]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
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]]])[[input.y:18.10-72: warning: unused value: $]5[
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]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
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]]])[[input.y:21.10-68: warning: unset value: $]$[
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input.y:21.10-68: warning: unused value: $]1[
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input.y:21.10-68: warning: unused value: $]2[
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]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
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]]]))])
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## --------------- ##
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## Unused values. ##
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## --------------- ##
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AT_SETUP([Unused values])
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AT_CHECK_UNUSED_VALUES
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AT_CHECK_UNUSED_VALUES(, [1])
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AT_CLEANUP
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## ------------------------------------------ ##
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## Unused values before symbol declarations. ##
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## ------------------------------------------ ##
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AT_SETUP([Unused values before symbol declarations])
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AT_CHECK_UNUSED_VALUES([1])
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AT_CHECK_UNUSED_VALUES([1], [1])
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AT_CLEANUP
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## --------------------------------------------- ##
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## Default %printer and %destructor redeclared. ##
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## --------------------------------------------- ##
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AT_SETUP([Default %printer and %destructor redeclared])
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AT_DATA([[input.y]],
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[[%destructor { destroy ($$); } <*> <*>
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%printer { destroy ($$); } <*> <*>
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%destructor { destroy ($$); } <*>
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%printer { destroy ($$); } <*>
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%destructor { destroy ($$); } <> <>
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%printer { destroy ($$); } <> <>
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%destructor { destroy ($$); } <>
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%printer { destroy ($$); } <>
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%%
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start: ;
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%destructor { destroy ($$); } <*>;
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%printer { destroy ($$); } <*>;
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%destructor { destroy ($$); } <>;
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%printer { destroy ($$); } <>;
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]])
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AT_BISON_CHECK([input.y], [1], [],
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[[input.y:1.13-29: redeclaration for default tagged %destructor
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input.y:1.13-29: previous declaration
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input.y:2.10-26: redeclaration for default tagged %printer
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input.y:2.10-26: previous declaration
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input.y:4.13-29: redeclaration for default tagged %destructor
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input.y:1.13-29: previous declaration
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input.y:5.10-26: redeclaration for default tagged %printer
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input.y:2.10-26: previous declaration
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input.y:7.13-29: redeclaration for default tagless %destructor
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input.y:7.13-29: previous declaration
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input.y:8.10-26: redeclaration for default tagless %printer
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input.y:8.10-26: previous declaration
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input.y:10.13-29: redeclaration for default tagless %destructor
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input.y:7.13-29: previous declaration
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input.y:11.10-26: redeclaration for default tagless %printer
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input.y:8.10-26: previous declaration
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input.y:17.13-29: redeclaration for default tagged %destructor
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input.y:4.13-29: previous declaration
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input.y:18.10-26: redeclaration for default tagged %printer
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input.y:5.10-26: previous declaration
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input.y:20.13-29: redeclaration for default tagless %destructor
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input.y:10.13-29: previous declaration
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input.y:21.10-26: redeclaration for default tagless %printer
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input.y:11.10-26: previous declaration
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]])
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AT_CLEANUP
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## ---------------------------------------------- ##
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## Per-type %printer and %destructor redeclared. ##
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## ---------------------------------------------- ##
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AT_SETUP([Per-type %printer and %destructor redeclared])
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AT_DATA([[input.y]],
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[[%destructor { destroy ($$); } <field1> <field2>
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%printer { destroy ($$); } <field1> <field2>
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%destructor { destroy ($$); } <field1> <field1>
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%printer { destroy ($$); } <field2> <field2>
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%%
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start: ;
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%destructor { destroy ($$); } <field2> <field1>;
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%printer { destroy ($$); } <field2> <field1>;
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]])
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AT_BISON_CHECK([input.y], [1], [],
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[[input.y:4.13-29: %destructor redeclaration for <field1>
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input.y:1.13-29: previous declaration
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input.y:4.13-29: %destructor redeclaration for <field1>
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input.y:4.13-29: previous declaration
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input.y:5.10-26: %printer redeclaration for <field2>
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input.y:2.10-26: previous declaration
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input.y:5.10-26: %printer redeclaration for <field2>
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input.y:5.10-26: previous declaration
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input.y:11.13-29: %destructor redeclaration for <field1>
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input.y:4.13-29: previous declaration
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input.y:11.13-29: %destructor redeclaration for <field2>
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input.y:1.13-29: previous declaration
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input.y:12.10-26: %printer redeclaration for <field1>
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input.y:2.10-26: previous declaration
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input.y:12.10-26: %printer redeclaration for <field2>
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input.y:5.10-26: previous declaration
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]])
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AT_CLEANUP
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## ---------------------------------------- ##
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## Unused values with default %destructor. ##
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## ---------------------------------------- ##
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AT_SETUP([Unused values with default %destructor])
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AT_DATA([[input.y]],
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[[%destructor { destroy ($$); } <>
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%type <tag> tagged
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%%
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start: end end tagged tagged { $<tag>1; $3; } ;
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end: { } ;
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tagged: { } ;
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]])
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AT_BISON_CHECK([input.y], [0], [],
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[[input.y:6.8-45: warning: unset value: $$
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input.y:6.8-45: warning: unused value: $2
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input.y:7.6-8: warning: unset value: $$
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]])
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AT_DATA([[input.y]],
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[[%destructor { destroy ($$); } <*>
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%type <tag> tagged
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%%
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start: end end tagged tagged { $<tag>1; $3; } ;
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end: { } ;
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tagged: { } ;
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]])
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AT_BISON_CHECK([input.y], [0], [],
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[[input.y:6.8-45: warning: unused value: $4
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input.y:8.9-11: warning: unset value: $$
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]])
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AT_CLEANUP
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## ----------------------------------------- ##
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## Unused values with per-type %destructor. ##
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## ----------------------------------------- ##
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AT_SETUP([Unused values with per-type %destructor])
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AT_DATA([[input.y]],
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[[%destructor { destroy ($$); } <field1>
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%type <field1> start end
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%%
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start: end end { $1; } ;
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end: { } ;
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]])
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AT_BISON_CHECK([input.y], [0], [],
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[[input.y:6.8-22: warning: unset value: $$
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input.y:6.8-22: warning: unused value: $2
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input.y:7.6-8: warning: unset value: $$
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]])
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AT_CLEANUP
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## ---------------------- ##
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## Incompatible Aliases. ##
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## ---------------------- ##
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AT_SETUP([Incompatible Aliases])
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AT_DATA([input.y],
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[[%token foo "foo"
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%type <bar> foo
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%printer {bar} foo
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%destructor {bar} foo
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%left foo
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%type <baz> "foo"
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%printer {baz} "foo"
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%destructor {baz} "foo"
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%left "foo"
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%%
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exp: foo;
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]])
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AT_BISON_CHECK([input.y], [1], [],
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[[input.y:8.7-11: %type redeclaration for foo
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input.y:3.7-11: previous declaration
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input.y:10.13-17: %destructor redeclaration for foo
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input.y:5.13-17: previous declaration
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input.y:9.10-14: %printer redeclaration for foo
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input.y:4.10-14: previous declaration
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input.y:11.1-5: %left redeclaration for foo
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input.y:6.1-5: previous declaration
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]])
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AT_CLEANUP
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## ----------------------- ##
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## Torturing the Scanner. ##
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## ----------------------- ##
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# Be sure to compile and run, so that the C compiler checks what
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# we do.
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AT_SETUP([Torturing the Scanner])
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AT_DATA([input.y], [])
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AT_BISON_CHECK([input.y], [1], [],
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[[input.y:1.1: syntax error, unexpected end of file
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]])
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AT_DATA([input.y],
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[{}
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])
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AT_BISON_CHECK([input.y], [1], [],
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[[input.y:1.1-2: syntax error, unexpected {...}
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]])
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AT_DATA_GRAMMAR([input.y],
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[[%{
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/* This is seen in GCC: a %{ and %} in middle of a comment. */
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const char *foo = "So %{ and %} can be here too.";
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#if 0
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/* These examples test Bison while not stressing C compilers too much.
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Many C compilers mishandle backslash-newlines, so this part of the
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test is inside "#if 0". The comment and string are written so that
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the "#endif" will be seen regardless of the C compiler bugs that we
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know about, namely:
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HP C (as of late 2002) mishandles *\[newline]\[newline]/ within a
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comment.
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The Apple Darwin compiler (as of late 2002) mishandles
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\\[newline]' within a character constant.
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*/
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/\
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* A comment with backslash-newlines in it. %} *\
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\
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/
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/* { Close the above comment, if the C compiler mishandled it. */
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char str[] = "\\
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" A string with backslash-newlines in it %{ %} \\
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\
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"";
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char apostrophe = '\'';
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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%}
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/* %{ and %} can be here too. */
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%{
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/* Exercise pre-prologue dependency to %union. */
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typedef int value;
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%}
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/* Exercise M4 quoting: '@:>@@:>@', 0. */
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/* Also exercise %union. */
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%union
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{
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value ival; /* A comment to exercise an old bug. */
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};
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|
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/* Exercise post-prologue dependency to %union. */
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%{
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static YYSTYPE value_as_yystype (value val);
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/* Exercise quotes in declarations. */
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char quote[] = "@:>@@:>@,";
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%}
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%{
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static void yyerror (const char *s);
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static int yylex (void);
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%}
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%type <ival> '@<:@'
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/* 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, $1);
|
|
}
|
|
;
|
|
|
|
two: '\x000000000000000000000000000000000000000000000000000000000000000000002';
|
|
oline: '@' 'o' 'l' 'i' 'n' 'e' '@' '_' '_' 'o' 'l' 'i' 'n' 'e' '_' '_';
|
|
output.or.oline.opt: ;|oline;;|output;;;
|
|
output: '#' 'o' 'u' 't' 'p' 'u' 't' ' ';
|
|
%%
|
|
/* Exercise M4 quoting: '@:>@@:>@', @<:@, 2. */
|
|
|
|
static YYSTYPE
|
|
value_as_yystype (value val)
|
|
{
|
|
YYSTYPE res;
|
|
res.ival = val;
|
|
return res;
|
|
}
|
|
|
|
static int
|
|
yylex (void)
|
|
{
|
|
static char const input[] = "@<:@\1\2$@{@oline@__@&t@oline__\
|
|
#output "; /* "
|
|
*/
|
|
static size_t toknum;
|
|
if (! (toknum < sizeof input))
|
|
abort ();
|
|
yylval = value_as_yystype (input[toknum]);
|
|
return input[toknum++];
|
|
}
|
|
|
|
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_BISON_CHECK([-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_BISON_CHECK([-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_BISON_CHECK([-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)
|
|
|
|
|
|
## ------------------------------------- ##
|
|
## String aliases for character tokens. ##
|
|
## ------------------------------------- ##
|
|
|
|
AT_SETUP([String aliases for character tokens])
|
|
|
|
# Bison once thought a character token and its alias were different
|
|
# symbols with the same user token number.
|
|
|
|
AT_DATA_GRAMMAR([input.y],
|
|
[[%token 'a' "a"
|
|
%%
|
|
start: 'a';
|
|
%%
|
|
]])
|
|
|
|
AT_BISON_CHECK([-o input.c input.y])
|
|
|
|
AT_CLEANUP
|
|
|
|
|
|
## -------------- ##
|
|
## Symbol names. ##
|
|
## -------------- ##
|
|
|
|
AT_SETUP([Symbols])
|
|
|
|
AT_DATA_GRAMMAR([input.y],
|
|
[[%token WITH-DASH
|
|
%token WITHOUT_DASH "WITHOUT-DASH"
|
|
%token WITH.PERIOD
|
|
%token WITHOUT_PERIOD "WITHOUT.PERIOD"
|
|
%code {
|
|
void yyerror (char const *);
|
|
int yylex (void);
|
|
}
|
|
%%
|
|
start: with-dash without_dash with.period without_period;
|
|
with-dash: WITH-DASH;
|
|
without_dash: "WITHOUT-DASH";
|
|
with.period: WITH.PERIOD;
|
|
without_period: "WITHOUT.PERIOD";
|
|
%%
|
|
]])
|
|
|
|
# POSIX Yacc accept periods, but not dashes.
|
|
AT_BISON_CHECK([--yacc input.y], [1], [],
|
|
[[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH
|
|
input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
|
|
]])
|
|
|
|
# So warn about them.
|
|
AT_BISON_CHECK([-Wyacc input.y], [], [],
|
|
[[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH
|
|
input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
|
|
]])
|
|
|
|
# Dashes are fine for GNU Bison.
|
|
AT_BISON_CHECK([-o input.c input.y])
|
|
|
|
# Make sure we don't export silly token identifiers with periods or dashes.
|
|
AT_COMPILE([input.o], [-c input.c])
|
|
|
|
|
|
# Periods and dashes are genuine letters, they can start identifiers.
|
|
# Digits cannot.
|
|
AT_DATA_GRAMMAR([input.y],
|
|
[[%token .GOOD
|
|
-GOOD
|
|
1NV4L1D
|
|
%%
|
|
start: .GOOD -GOOD
|
|
]])
|
|
AT_BISON_CHECK([-o input.c input.y], [1], [],
|
|
[[input.y:11.10-16: invalid identifier: `1NV4L1D'
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
|
|
## ----------------- ##
|
|
## Numbered tokens. ##
|
|
## ----------------- ##
|
|
|
|
AT_SETUP([Numbered tokens])
|
|
|
|
AT_DATA_GRAMMAR([1.y],
|
|
[[%token DECIMAL 11259375
|
|
HEXADECIMAL 0xabcdef
|
|
%%
|
|
start: DECIMAL;
|
|
]])
|
|
|
|
AT_BISON_CHECK([1.y], [1], [],
|
|
[[1.y:10.10-20: user token number 11259375 redeclaration for HEXADECIMAL
|
|
1.y:9.8-14: previous declaration for DECIMAL
|
|
]])
|
|
|
|
|
|
AT_DATA_GRAMMAR([2.y],
|
|
[[%token HEXADECIMAL 0xabcdef
|
|
DECIMAL 11259375
|
|
%%
|
|
start: HEXADECIMAL;
|
|
]])
|
|
|
|
AT_BISON_CHECK([2.y], [1], [],
|
|
[[2.y:10.10-16: user token number 11259375 redeclaration for DECIMAL
|
|
2.y:9.8-18: previous declaration for HEXADECIMAL
|
|
]])
|
|
|
|
|
|
AT_DATA_GRAMMAR([3.y],
|
|
[[%token TOO_LARGE_DEC 999999999999999999999
|
|
TOO_LARGE_HEX 0xFFFFFFFFFFFFFFFFFFF
|
|
%%
|
|
start: TOO_LARGE_DEC TOO_LARGE_HEX
|
|
%%
|
|
]])
|
|
|
|
AT_BISON_CHECK([3.y], [1], [],
|
|
[[3.y:9.22-42: integer out of range: `999999999999999999999'
|
|
3.y:10.24-44: integer out of range: `0xFFFFFFFFFFFFFFFFFFF'
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
|
|
## --------------------- ##
|
|
## Unclosed constructs. ##
|
|
## --------------------- ##
|
|
|
|
AT_SETUP([Unclosed constructs])
|
|
|
|
# Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
|
|
# constructs, so they were prepended to whatever it STRING_GROW'ed
|
|
# next. It also threw them away rather than returning them to the
|
|
# parser. The effect was confusing subsequent error messages.
|
|
|
|
AT_DATA([input.y],
|
|
[[%token A "a
|
|
%token B "b"
|
|
%token AB "ab" // Used to complain that "ab" was already used.
|
|
%token C '1
|
|
%token TWO "2"
|
|
%token TICK_TWELVE "'12" // Used to complain that "'12" was already used.
|
|
|
|
%%
|
|
|
|
start: ;
|
|
|
|
// Used to report a syntax error because it didn't see any kind of symbol
|
|
// identifier.
|
|
%type <f> 'a
|
|
;
|
|
%type <f> "a
|
|
;
|
|
// Used to report a syntax error because it didn't see braced code.
|
|
%destructor { free ($$)
|
|
]])
|
|
|
|
AT_BISON_CHECK([-o input.c input.y], 1, [],
|
|
[[input.y:1.10-2.0: missing `"' at end of line
|
|
input.y:4.10-5.0: missing `'' at end of line
|
|
input.y:14.11-15.0: missing `'' at end of line
|
|
input.y:16.11-17.0: missing `"' at end of line
|
|
input.y:19.13-20.0: missing `}' at end of file
|
|
input.y:20.1: syntax error, unexpected end of file
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
|
|
## ------------------------- ##
|
|
## %start after first rule. ##
|
|
## ------------------------- ##
|
|
|
|
AT_SETUP([%start after first rule])
|
|
|
|
# Bison once complained that a %start after the first rule was a
|
|
# redeclaration of the start symbol.
|
|
|
|
AT_DATA([input.y],
|
|
[[%%
|
|
false_start: ;
|
|
start: false_start ;
|
|
%start start;
|
|
]])
|
|
|
|
AT_BISON_CHECK([-o input.c input.y])
|
|
|
|
AT_CLEANUP
|
|
|
|
|
|
## --------------------- ##
|
|
## %prec takes a token. ##
|
|
## --------------------- ##
|
|
|
|
AT_SETUP([%prec takes a token])
|
|
|
|
# Bison once allowed %prec sym where sym was a nonterminal.
|
|
|
|
AT_DATA([input.y],
|
|
[[%%
|
|
start: PREC %prec PREC ;
|
|
PREC: ;
|
|
]])
|
|
|
|
AT_BISON_CHECK([input.y], [1], [],
|
|
[[input.y:3.1-4: rule given for PREC, which is a token
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
|
|
## -------------------------------- ##
|
|
## Reject unused %code qualifiers. ##
|
|
## -------------------------------- ##
|
|
|
|
AT_SETUP([Reject unused %code qualifiers])
|
|
|
|
AT_DATA([input-c.y],
|
|
[[%code q {}
|
|
%code bad {}
|
|
%code bad {}
|
|
%code format {}
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input-c.y]], [0], [],
|
|
[[input-c.y:1.7: warning: %code qualifier `q' is not used
|
|
input-c.y:2.7-9: warning: %code qualifier `bad' is not used
|
|
input-c.y:3.7-9: warning: %code qualifier `bad' is not used
|
|
input-c.y:4.7-12: warning: %code qualifier `format' is not used
|
|
]])
|
|
|
|
AT_DATA([input-c-glr.y],
|
|
[[%code q {}
|
|
%code bad {}
|
|
%code bad {}
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input-c-glr.y]], [0], [],
|
|
[[input-c-glr.y:1.7: warning: %code qualifier `q' is not used
|
|
input-c-glr.y:2.7-9: warning: %code qualifier `bad' is not used
|
|
input-c-glr.y:3.8-10: warning: %code qualifier `bad' is not used
|
|
]])
|
|
|
|
AT_DATA([input-c++.y],
|
|
[[%code q {}
|
|
%code bad {}
|
|
%code q {}
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input-c++.y]], [0], [],
|
|
[[input-c++.y:1.7: warning: %code qualifier `q' is not used
|
|
input-c++.y:2.7-9: warning: %code qualifier `bad' is not used
|
|
input-c++.y:3.8: warning: %code qualifier `q' is not used
|
|
]])
|
|
|
|
AT_DATA([input-c++-glr.y],
|
|
[[%code bad {}
|
|
%code q {}
|
|
%code q {}
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input-c++-glr.y]], [0], [],
|
|
[[input-c++-glr.y:1.7-9: warning: %code qualifier `bad' is not used
|
|
input-c++-glr.y:2.7: warning: %code qualifier `q' is not used
|
|
input-c++-glr.y:3.7: warning: %code qualifier `q' is not used
|
|
]])
|
|
|
|
AT_DATA([special-char-@@.y],
|
|
[[%code bad {}
|
|
%code q {}
|
|
%code q {}
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[special-char-@@.y]], [0], [],
|
|
[[special-char-@@.y:1.7-9: warning: %code qualifier `bad' is not used
|
|
special-char-@@.y:2.7: warning: %code qualifier `q' is not used
|
|
special-char-@@.y:3.7: warning: %code qualifier `q' is not used
|
|
]])
|
|
|
|
AT_DATA([special-char-@:>@.y],
|
|
[[%code bad {}
|
|
%code q {}
|
|
%code q {}
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[special-char-@:>@.y]], [0], [],
|
|
[[special-char-@:>@.y:1.7-9: warning: %code qualifier `bad' is not used
|
|
special-char-@:>@.y:2.7: warning: %code qualifier `q' is not used
|
|
special-char-@:>@.y:3.7: warning: %code qualifier `q' is not used
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
|
|
## ---------------- ##
|
|
## %define errors. ##
|
|
## ---------------- ##
|
|
|
|
AT_SETUP([%define errors])
|
|
|
|
AT_DATA([input-redefined.y],
|
|
[[%define var "value1"
|
|
%define var "value1"
|
|
%define var "value2"
|
|
%define special1 "@:>@"
|
|
%define special2 "@<:@"
|
|
%%
|
|
start: ;
|
|
]])
|
|
|
|
AT_BISON_CHECK([[input-redefined.y]], [[1]], [],
|
|
[[input-redefined.y:2.9-11: %define variable `var' redefined
|
|
input-redefined.y:1.9-11: previous definition
|
|
input-redefined.y:3.10-12: %define variable `var' redefined
|
|
input-redefined.y:2.9-11: previous definition
|
|
]])
|
|
|
|
AT_DATA([input-unused.y],
|
|
[[%define var "value"
|
|
%%
|
|
start: ;
|
|
]])
|
|
|
|
AT_BISON_CHECK([[input-unused.y]], [[0]], [],
|
|
[[input-unused.y:1.9-11: warning: %define variable `var' is not used
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
|
|
## ----------------------------------- ##
|
|
## %define, --define, --force-define. ##
|
|
## ----------------------------------- ##
|
|
|
|
AT_SETUP([%define, --define, --force-define])
|
|
|
|
AT_DATA([skel.c],
|
|
[[m4@&t@_divert_push(0)@
|
|
@output(b4_parser_file_name@)@
|
|
[var-dd: ]b4_percent_define_get([[var-dd]])[
|
|
var-ff: ]b4_percent_define_get([[var-ff]])[
|
|
var-dfg: ]b4_percent_define_get([[var-dfg]])[
|
|
var-fd: ]b4_percent_define_get([[var-fd]])
|
|
m4@&t@_divert_pop(0)
|
|
]])
|
|
|
|
AT_DATA([input.y],
|
|
[[%define var-dfg "gram"
|
|
%%
|
|
start: ;
|
|
]])
|
|
|
|
AT_BISON_CHECK([[-Dvar-dd=cmd-d1 -Dvar-dd=cmd-d2 \
|
|
-Fvar-ff=cmd-f1 -Fvar-ff=cmd-f2 \
|
|
-Dvar-dfg=cmd-d -Fvar-dfg=cmd-f \
|
|
-Fvar-fd=cmd-f -Dvar-fd=cmd-d \
|
|
-Dunused-d -Funused-f \
|
|
--skeleton ./skel.c input.y]], [[0]], [],
|
|
[[<command line>:10: warning: %define variable `unused-d' is not used
|
|
<command line>:11: warning: %define variable `unused-f' is not used
|
|
]])
|
|
|
|
AT_CHECK([[cat input.tab.c]], [[0]],
|
|
[[var-dd: cmd-d2
|
|
var-ff: cmd-f2
|
|
var-dfg: cmd-f
|
|
var-fd: cmd-d
|
|
]])
|
|
|
|
AT_DATA([input-dg.y],
|
|
[[%define var "gram"
|
|
%%
|
|
start: ;
|
|
]])
|
|
|
|
AT_BISON_CHECK([[-Dvar=cmd-d input-dg.y]], [[1]], [],
|
|
[[input-dg.y:1.9-11: %define variable `var' redefined
|
|
<command line>:2: previous definition
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
## --------------------------- ##
|
|
## %define Boolean variables. ##
|
|
## --------------------------- ##
|
|
|
|
AT_SETUP([[%define Boolean variables]])
|
|
|
|
AT_DATA([Input.y],
|
|
[[%language "Java"
|
|
%define public "maybe"
|
|
%define parser_class_name "Input"
|
|
%%
|
|
start: ;
|
|
]])
|
|
|
|
AT_BISON_CHECK([[Input.y]], [1], [],
|
|
[[Input.y:2.9-14: invalid value for %define Boolean variable `public'
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
## ------------------------ ##
|
|
## %define enum variables. ##
|
|
## ------------------------ ##
|
|
|
|
AT_SETUP([[%define enum variables]])
|
|
|
|
# Front-end.
|
|
AT_DATA([[input.y]],
|
|
[[%define lr.default-reductions "bogus"
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input.y]], [[1]], [[]],
|
|
[[input.y:1.9-29: invalid value for %define variable `lr.default-reductions': `bogus'
|
|
input.y:1.9-29: accepted value: `all'
|
|
input.y:1.9-29: accepted value: `consistent'
|
|
input.y:1.9-29: accepted value: `accepting'
|
|
]])
|
|
|
|
# Back-end.
|
|
AT_DATA([[input.y]],
|
|
[[%define api.push-pull "neither"
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input.y]], [1], [],
|
|
[[input.y:1.9-21: invalid value for %define variable `api.push-pull': `neither'
|
|
input.y:1.9-21: accepted value: `pull'
|
|
input.y:1.9-21: accepted value: `push'
|
|
input.y:1.9-21: accepted value: `both'
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
## -------------------------------- ##
|
|
## %define backward compatibility. ##
|
|
## -------------------------------- ##
|
|
|
|
AT_SETUP([[%define backward compatibility]])
|
|
|
|
# The error messages tell us whether underscores in these variables are
|
|
# being converted to dashes.
|
|
|
|
AT_DATA([[input.y]],
|
|
[[%define api.push_pull "neither"
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input.y]], [1], [],
|
|
[[input.y:1.9-21: invalid value for %define variable `api.push-pull': `neither'
|
|
input.y:1.9-21: accepted value: `pull'
|
|
input.y:1.9-21: accepted value: `push'
|
|
input.y:1.9-21: accepted value: `both'
|
|
]])
|
|
|
|
AT_DATA([[input.y]],
|
|
[[%define lr.keep_unreachable_states "maybe"
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input.y]], [1], [],
|
|
[[input.y:1.9-34: invalid value for %define Boolean variable `lr.keep-unreachable-states'
|
|
]])
|
|
|
|
AT_DATA([[input.y]],
|
|
[[%define foo_bar "baz"
|
|
%%
|
|
start: ;
|
|
]])
|
|
AT_BISON_CHECK([[input.y]], [0], [],
|
|
[[input.y:1.9-15: warning: %define variable `foo_bar' is not used
|
|
]])
|
|
|
|
AT_CLEANUP
|
|
|
|
## ------------------------- ##
|
|
## Unused %define api.pure. ##
|
|
## ------------------------- ##
|
|
|
|
AT_SETUP([[Unused %define api.pure]])
|
|
|
|
# AT_CHECK_API_PURE(DECLS, VALUE)
|
|
# -------------------------------
|
|
# Make sure Bison reports that `%define api.pure VALUE' is unused when DECLS
|
|
# are specified.
|
|
m4_define([AT_CHECK_API_PURE],
|
|
[
|
|
AT_DATA([[input.y]],
|
|
[[%define api.pure ]$2[
|
|
]$1[
|
|
%%
|
|
start: ;
|
|
]])
|
|
|
|
AT_BISON_CHECK([[input.y]], [0], [],
|
|
[[input.y:1.9-16: warning: %define variable `api.pure' is not used
|
|
]])
|
|
])
|
|
|
|
AT_CHECK_API_PURE([[%language "c++" %defines]], [[]])
|
|
AT_CHECK_API_PURE([[%language "c++" %defines]], [["false"]])
|
|
AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [[""]])
|
|
AT_CHECK_API_PURE([[%language "c++" %defines %glr-parser]], [["false"]])
|
|
AT_CHECK_API_PURE([[%language "java"]], [["true"]])
|
|
AT_CHECK_API_PURE([[%language "java"]], [["false"]])
|
|
|
|
AT_CLEANUP
|
|
|
|
## -------------------------------- ##
|
|
## C++ namespace reference errors. ##
|
|
## -------------------------------- ##
|
|
|
|
AT_SETUP([[C++ namespace reference errors]])
|
|
|
|
# AT_CHECK_NAMESPACE_ERROR(NAMESPACE-DECL, ERROR, [ERROR], ...)
|
|
# -------------------------------------------------------------
|
|
# Make sure Bison reports all ERROR's for %define namespace "NAMESPACE-DECL".
|
|
m4_define([AT_CHECK_NAMESPACE_ERROR],
|
|
[
|
|
AT_DATA([[input.y]],
|
|
[[%language "C++"
|
|
%defines
|
|
%define namespace "]$1["
|
|
%%
|
|
start: ;
|
|
]])
|
|
|
|
AT_BISON_CHECK([[input.y]], [1], [],
|
|
[m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
|
|
[[input.y:3.9-17: ]b4_arg[
|
|
]])])
|
|
])
|
|
|
|
AT_CHECK_NAMESPACE_ERROR([[]],
|
|
[[namespace reference is empty]])
|
|
AT_CHECK_NAMESPACE_ERROR([[ ]],
|
|
[[namespace reference is empty]])
|
|
AT_CHECK_NAMESPACE_ERROR([[foo::::bar]],
|
|
[[namespace reference has consecutive "::"]])
|
|
AT_CHECK_NAMESPACE_ERROR([[foo:: ::bar]],
|
|
[[namespace reference has consecutive "::"]])
|
|
AT_CHECK_NAMESPACE_ERROR([[::::bar]],
|
|
[[namespace reference has consecutive "::"]])
|
|
AT_CHECK_NAMESPACE_ERROR([[:: ::bar]],
|
|
[[namespace reference has consecutive "::"]])
|
|
AT_CHECK_NAMESPACE_ERROR([[foo::bar:: ::]],
|
|
[[namespace reference has consecutive "::"]],
|
|
[[namespace reference has a trailing "::"]])
|
|
AT_CHECK_NAMESPACE_ERROR([[foo::bar::]],
|
|
[[namespace reference has a trailing "::"]])
|
|
AT_CHECK_NAMESPACE_ERROR([[foo::bar:: ]],
|
|
[[namespace reference has a trailing "::"]])
|
|
AT_CHECK_NAMESPACE_ERROR([[::]],
|
|
[[namespace reference has a trailing "::"]])
|
|
|
|
AT_CLEANUP
|