mirror of
https://git.savannah.gnu.org/git/bison.git
synced 2026-03-09 12:23:04 +00:00
ee86ea8839
It does not make a lot of sense to use ::= in our counterexamples, that's not something that belongs to the Bison "vocabulary". Using the colon makes sense, but it's too discreet. Let's use the arrow, which we already use in some reports (HTML and Dot). * src/gram.h (print_dot_fallback): Generalize into... (print_fallback): this. (print_arrow): New. * src/derivation.c: Use it. * NEWS, tests/conflicts.at, tests/counterexample.at, * tests/diagnostics.at, tests/report.at: Adjust. * doc/bison.texi: Ditto. Unfortunately the literal `→` is output as `↦`. So we need to use @arrow.
600 lines
27 KiB
Plaintext
600 lines
27 KiB
Plaintext
# Checking diagnostics. -*- Autotest -*-
|
|
|
|
# Copyright (C) 2019-2020 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
AT_BANNER([[Diagnostics.]])
|
|
|
|
|
|
# AT_TEST($1: TITLE, $2: GRAMMAR, $3: EXIT-STATUS, $4: OUTPUT-WITH-STYLE,
|
|
# $5: EXTRA_ENV, $6: SKIP-IF)
|
|
# -----------------------------------------------------------------------
|
|
# Run Bison on GRAMMAR with debugging style enabled, and expect
|
|
# OUTPUT-WITH-STYLE as diagnostics.
|
|
m4_pushdef([AT_TEST],
|
|
[
|
|
AT_SETUP([$1])
|
|
AT_KEYWORDS([diagnostics])
|
|
|
|
# We need UTF-8 support for correct screen-width computation of UTF-8
|
|
# characters. Skip the test if not available.
|
|
locale=`locale -a | $EGREP '^en_US\.(UTF-8|utf8)$' | sed 1q`
|
|
AT_SKIP_IF([test x == x"$locale"])
|
|
|
|
m4_ifval([$6],
|
|
[AT_SKIP_IF([$6])])
|
|
|
|
AT_BISON_OPTION_PUSHDEFS
|
|
|
|
AT_DATA_GRAMMAR([[input.y]], [$2])
|
|
|
|
AT_DATA([experr], [$4])
|
|
|
|
# For some reason, literal ^M in the input are removed and don't end
|
|
# in `input.y`. So use the two-character ^M represent it, and let
|
|
# Perl insert real CR characters.
|
|
if $EGREP ['\^M|\\[0-9][0-9][0-9]'] input.y experr >/dev/null; then
|
|
AT_PERL_REQUIRE([-pi -e 's{\^M}{\r}g;s{\\(\d{3}|.)}{$v = $[]1; $v =~ /\A\d+\z/ ? chr($v) : $v}ge' input.y experr])
|
|
fi
|
|
|
|
AT_CHECK([LC_ALL="$locale" $5 bison -fcaret --color=debug -Wall,cex input.y], [$3], [], [experr])
|
|
|
|
# When no style, same messages, but without style.
|
|
# Except for the second display of the counterexample,
|
|
# which is not displayed at all.
|
|
AT_PERL_REQUIRE([-pi -e '
|
|
s{(</?(-|\w)+>)}{ $[]1 eq "<tag>" ? $[]1 : "" }ge;
|
|
if (/Example/)
|
|
{
|
|
++$example;
|
|
$_ = "" if $example % 2 == 0;
|
|
}
|
|
' experr])
|
|
|
|
# Cannot use AT_BISON_CHECK easily as we need to change the
|
|
# environment.
|
|
# FIXME: Enhance AT_BISON_CHECK.
|
|
AT_CHECK([LC_ALL="$locale" $5 bison -fcaret -Wall,cex input.y], [$3], [], [experr])
|
|
|
|
|
|
AT_BISON_OPTION_POPDEFS
|
|
|
|
AT_CLEANUP
|
|
])
|
|
|
|
|
|
## ---------- ##
|
|
## Warnings. ##
|
|
## ---------- ##
|
|
|
|
AT_TEST([[Warnings]],
|
|
[[%token FOO FOO FOO
|
|
%token FOO FOO FOO
|
|
%%
|
|
exp: %empty;
|
|
]],
|
|
[0],
|
|
[[input.y:9.12-14: <warning>warning:</warning> symbol FOO redeclared [<warning>-Wother</warning>]
|
|
9 | %token FOO <warning>FOO</warning> FOO
|
|
| <warning>^~~</warning>
|
|
input.y:9.8-10: <note>note:</note> previous declaration
|
|
9 | %token <note>FOO</note> FOO FOO
|
|
| <note>^~~</note>
|
|
input.y:9.16-18: <warning>warning:</warning> symbol FOO redeclared [<warning>-Wother</warning>]
|
|
9 | %token FOO FOO <warning>FOO</warning>
|
|
| <warning>^~~</warning>
|
|
input.y:9.8-10: <note>note:</note> previous declaration
|
|
9 | %token <note>FOO</note> FOO FOO
|
|
| <note>^~~</note>
|
|
input.y:10.8-10: <warning>warning:</warning> symbol FOO redeclared [<warning>-Wother</warning>]
|
|
10 | %token <warning>FOO</warning> FOO FOO
|
|
| <warning>^~~</warning>
|
|
input.y:9.8-10: <note>note:</note> previous declaration
|
|
9 | %token <note>FOO</note> FOO FOO
|
|
| <note>^~~</note>
|
|
input.y:10.13-15: <warning>warning:</warning> symbol FOO redeclared [<warning>-Wother</warning>]
|
|
10 | %token FOO <warning>FOO</warning> FOO
|
|
| <warning>^~~</warning>
|
|
input.y:9.8-10: <note>note:</note> previous declaration
|
|
9 | %token <note>FOO</note> FOO FOO
|
|
| <note>^~~</note>
|
|
input.y:10.18-20: <warning>warning:</warning> symbol FOO redeclared [<warning>-Wother</warning>]
|
|
10 | %token FOO FOO <warning>FOO</warning>
|
|
| <warning>^~~</warning>
|
|
input.y:9.8-10: <note>note:</note> previous declaration
|
|
9 | %token <note>FOO</note> FOO FOO
|
|
| <note>^~~</note>
|
|
]])
|
|
|
|
|
|
## ------------------------ ##
|
|
## Single point locations. ##
|
|
## ------------------------ ##
|
|
|
|
# Single point locations (equal boundaries) are troublesome: it's easy
|
|
# to mess up the opening/closing of style. They come from the parser,
|
|
# rules with empty rhs. Their position is therefore debatable
|
|
# (between the previous token and the next one).
|
|
|
|
AT_TEST([[Single point locations]],
|
|
[[%%
|
|
exp: a b c d e
|
|
a: {}
|
|
b:{
|
|
};
|
|
c:
|
|
d
|
|
:
|
|
e:
|
|
]],
|
|
[0],
|
|
[[input.y:11.4-5: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
11 | a: <warning>{}</warning>
|
|
| <warning>^~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:12.3-13.1: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
12 | b:<warning>{</warning>
|
|
| <warning>^</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:14.3: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
14 | c:
|
|
| <warning>^</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:16.2: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
16 | :
|
|
| <warning>^</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:17.3: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
17 | e:
|
|
| <warning>^</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y: <warning>warning:</warning> fix-its can be applied. Rerun with option '--update'. [<warning>-Wother</warning>]
|
|
]])
|
|
|
|
|
|
|
|
## ------------------------------------- ##
|
|
## Line is too short, and then you die. ##
|
|
## ------------------------------------- ##
|
|
|
|
# We trust the "#line", since that's what allows us to quote the
|
|
# actual source from which the grammar file was generated. But #line
|
|
# can also be wrong, and point to a line which is shorter that the bad
|
|
# one. In which case we can easily forget to close the styling.
|
|
#
|
|
# Be sure to have #line point to a line long enough to open the
|
|
# styling, but not enough to close it.
|
|
|
|
AT_TEST([[Line is too short, and then you die]],
|
|
[[// Beware that there are 9 lines inserted before (including this one).
|
|
#line 12
|
|
%token foo 123
|
|
%token foo 123123
|
|
%token foo 123
|
|
%%
|
|
exp:
|
|
]],
|
|
[1],
|
|
[[input.y:13.8-10: <warning>warning:</warning> symbol foo redeclared [<warning>-Wother</warning>]
|
|
13 | %token <warning>foo</warning> 123
|
|
| <warning>^~~</warning>
|
|
input.y:12.8-10: <note>note:</note> previous declaration
|
|
12 | %token <note>foo</note> 123123
|
|
| <note>^~~</note>
|
|
input.y:13.12-17: <error>error:</error> redefining code of token foo
|
|
13 | %token foo <error>123</error>
|
|
| <error>^~~~~~</error>
|
|
input.y:14.8-10: <warning>warning:</warning> symbol foo redeclared [<warning>-Wother</warning>]
|
|
14 | %%
|
|
| <warning>^~~</warning>
|
|
input.y:12.8-10: <note>note:</note> previous declaration
|
|
12 | %token <note>foo</note> 123123
|
|
| <note>^~~</note>
|
|
]])
|
|
|
|
|
|
## ----------------------- ##
|
|
## Zero-width characters. ##
|
|
## ----------------------- ##
|
|
|
|
# We used to open twice the styling for characters that have a
|
|
# zero-width on display (e.g., \005).
|
|
|
|
AT_TEST([[Zero-width characters]],
|
|
[[%%
|
|
exp: an\005error.
|
|
]],
|
|
[1],
|
|
[[input.y:10.8: <error>error:</error> invalid character: '\\005'
|
|
10 | exp: an<error>\005</error>error.
|
|
| <error>^</error>
|
|
]])
|
|
|
|
|
|
## -------------------------------------- ##
|
|
## Tabulations and multibyte characters. ##
|
|
## -------------------------------------- ##
|
|
|
|
# Make sure we treat tabulations as eight spaces, and that multibyte
|
|
# characters have correct width.
|
|
|
|
AT_TEST([[Tabulations and multibyte characters]],
|
|
[[%%
|
|
exp: a b c d e f g
|
|
a: { }
|
|
b: { }
|
|
c: {------------}
|
|
d: {éééééééééééé}
|
|
e: { 42 }
|
|
f: { "฿¥$€₦" }
|
|
g: { 🐃 }
|
|
]],
|
|
[0],
|
|
[[input.y:11.4-17: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
11 | a: <warning>{ }</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:12.4-17: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
12 | b: <warning>{ }</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:13.4-17: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
13 | c: <warning>{------------}</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:14.4-17: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
14 | d: <warning>{éééééééééééé}</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:15.4-17: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
15 | e: <warning>{ 42 }</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:16.4-17: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
16 | f: <warning>{ "฿¥$€₦" }</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y:17.4-17: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
17 | g: <warning>{ 🐃 }</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y: <warning>warning:</warning> fix-its can be applied. Rerun with option '--update'. [<warning>-Wother</warning>]
|
|
]])
|
|
|
|
|
|
# Likewise, but currently not portable to AIX and Cygwin.
|
|
# https://lists.gnu.org/r/bug-bison/2020-05/msg00050.html
|
|
# https://lists.gnu.org/r/bug-bison/2020-05/msg00003.html.
|
|
AT_TEST([[Tabulations and multibyte characters]],
|
|
[[%%
|
|
e: {∇⃗×𝐸⃗ = -∂𝐵⃗/∂t}
|
|
]],
|
|
[0],
|
|
[[input.y:10.4-17: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
10 | e: <warning>{∇⃗×𝐸⃗ = -∂𝐵⃗/∂t}</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y: <warning>warning:</warning> fix-its can be applied. Rerun with option '--update'. [<warning>-Wother</warning>]
|
|
]], [], [uname -a | $EGREP -i 'aix|cygwin'])
|
|
|
|
|
|
## --------------- ##
|
|
## Special files. ##
|
|
## --------------- ##
|
|
|
|
# Don't try to quote special files.
|
|
# http://lists.gnu.org/archive/html/bug-bison/2019-04/msg00000.html
|
|
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90034
|
|
|
|
AT_TEST([[Special files]],
|
|
[[%%
|
|
exp: a b
|
|
a: {}
|
|
#line 1 "/dev/stdout"
|
|
b: {}
|
|
]],
|
|
[0],
|
|
[[input.y:11.4-5: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
11 | a: <warning>{}</warning>
|
|
| <warning>^~</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
/dev/stdout:1.4-5: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y: <warning>warning:</warning> fix-its can be applied. Rerun with option '--update'. [<warning>-Wother</warning>]
|
|
]])
|
|
|
|
|
|
## -------------------- ##
|
|
## Complaints from M4. ##
|
|
## -------------------- ##
|
|
|
|
# Complaints issued m4 need complete locations (byte and column) for
|
|
# diagnostics.
|
|
|
|
AT_TEST([[Complaints from M4]],
|
|
[[%define error1 {e}
|
|
%define error2 {é}
|
|
%%
|
|
exp: %empty;
|
|
]],
|
|
[1],
|
|
[[input.y:9.1-27: <error>error:</error> %define variable 'error1' is not used
|
|
9 | <error>%define error1 {e}</error>
|
|
| <error>^~~~~~~~~~~~~~~~~~~~~~~~~~~</error>
|
|
input.y:10.1-27: <error>error:</error> %define variable 'error2' is not used
|
|
10 | <error>%define error2 {é}</error>
|
|
| <error>^~~~~~~~~~~~~~~~~~~~~~~~~~~</error>
|
|
]])
|
|
|
|
|
|
## ----------------- ##
|
|
## Carriage return. ##
|
|
## ----------------- ##
|
|
|
|
# Carriage-return used to count as a newline in the scanner, and not
|
|
# in diagnostics. Resulting in all kinds of nice bugs.
|
|
|
|
AT_TEST([[Carriage return]],
|
|
[[^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M^M
|
|
%token "
|
|
%%
|
|
]],
|
|
[1],
|
|
[[input.y:10.8-11.0: <error>error:</error> missing '"' at end of line
|
|
10 | %token <error>"</error>
|
|
| <error>^</error>
|
|
input.y:10.8-11.0: <error>error:</error> expected <expected>character literal</expected> or <expected>identifier</expected> or <expected><tag></expected> before <unexpected>string</unexpected>
|
|
10 | %token <error>"</error>
|
|
| <error>^</error>
|
|
]])
|
|
|
|
|
|
## ------- ##
|
|
## CR NL. ##
|
|
## ------- ##
|
|
|
|
# Check Windows EOLs.
|
|
|
|
AT_TEST([[CR NL]],
|
|
[[^M
|
|
%token ^M FOO^M
|
|
%token ^M FOO^M
|
|
%%^M
|
|
exp:^M
|
|
]],
|
|
[0],
|
|
[[input.y:11.9-11: <warning>warning:</warning> symbol FOO redeclared [<warning>-Wother</warning>]
|
|
11 | %token
|
|
<warning>FOO</warning>
|
|
| <warning>^~~</warning>
|
|
input.y:10.9-11: <note>note:</note> previous declaration
|
|
10 | %token
|
|
<note>FOO</note>
|
|
| <note>^~~</note>
|
|
input.y:13.5: <warning>warning:</warning> empty rule without %empty [<warning>-Wempty-rule</warning>]
|
|
13 | exp:
|
|
| <warning>^</warning>
|
|
| <fixit-insert>%empty</fixit-insert>
|
|
input.y: <warning>warning:</warning> fix-its can be applied. Rerun with option '--update'. [<warning>-Wother</warning>]
|
|
]])
|
|
|
|
|
|
|
|
## -------------- ##
|
|
## Screen width. ##
|
|
## -------------- ##
|
|
|
|
AT_TEST([[Screen width: 200 columns]],
|
|
[[%token ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
%error-verbose
|
|
%%
|
|
exp: ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
]],
|
|
[0],
|
|
[[input.y:9.36-61: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | %token ABCDEFGHIJKLMNOPQRSTUVWXYZ <warning>ABCDEFGHIJKLMNOPQRSTUVWXYZ</warning> ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
| <warning>^~~~~~~~~~~~~~~~~~~~~~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:9.64-89: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | %token ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ <warning>ABCDEFGHIJKLMNOPQRSTUVWXYZ</warning> ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
| <warning>^~~~~~~~~~~~~~~~~~~~~~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:9.92-117: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | %token ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ <warning>ABCDEFGHIJKLMNOPQRSTUVWXYZ</warning>
|
|
| <warning>^~~~~~~~~~~~~~~~~~~~~~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:10.56-69: <warning>warning:</warning> deprecated directive: '%error-verbose', use '%define parse.error verbose' [<warning>-Wdeprecated</warning>]
|
|
10 | <warning>%error-verbose</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%define parse.error verbose</fixit-insert>
|
|
input.y: <warning>warning:</warning> fix-its can be applied. Rerun with option '--update'. [<warning>-Wother</warning>]
|
|
]],
|
|
[[COLUMNS=200]])
|
|
|
|
AT_TEST([[Screen width: 80 columns]],
|
|
[[%token ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
%error-verbose
|
|
%%
|
|
exp: ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
]],
|
|
[0],
|
|
[[input.y:9.36-61: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | %token ABCDEFGHIJKLMNOPQRSTUVWXYZ <warning>ABCDEFGHIJKLMNOPQRSTUVWXYZ</warning> ABCDEF...
|
|
| <warning>^~~~~~~~~~~~~~~~~~~~~~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEF...
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:9.64-89: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | %token ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ <warning>ABCDEF</warning>...
|
|
| <warning>^~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEF...
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:9.92-117: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | ...TUVWXYZ <warning>ABCDEFGHIJKLMNOPQRSTUVWXYZ</warning>
|
|
| <warning>^~~~~~~~~~~~~~~~~~~~~~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEF...
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:10.56-69: <warning>warning:</warning> deprecated directive: '%error-verbose', use '%define parse.error verbose' [<warning>-Wdeprecated</warning>]
|
|
10 | <warning>%error-verbose</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%define parse.error verbose</fixit-insert>
|
|
input.y: <warning>warning:</warning> fix-its can be applied. Rerun with option '--update'. [<warning>-Wother</warning>]
|
|
]],
|
|
[[COLUMNS=80]])
|
|
|
|
AT_TEST([[Screen width: 60 columns]],
|
|
[[%token ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
%error-verbose
|
|
%%
|
|
exp: ABCDEFGHIJKLMNOPQRSTUVWXYZ
|
|
]],
|
|
[0],
|
|
[[input.y:9.36-61: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | %token ABCDEFGHIJKLMNOPQRSTUVWXYZ <warning>ABCDEFGHIJKLMN</warning>...
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMN...
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:9.64-89: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | ...TUVWXYZ <warning>ABCDEFGHIJKLMNOPQRSTUVWXYZ</warning> ABCDEFGHI...
|
|
| <warning>^~~~~~~~~~~~~~~~~~~~~~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMN...
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:9.92-117: <warning>warning:</warning> symbol ABCDEFGHIJKLMNOPQRSTUVWXYZ redeclared [<warning>-Wother</warning>]
|
|
9 | ...TUVWXYZ <warning>ABCDEFGHIJKLMNOPQRSTUVWXYZ</warning>
|
|
| <warning>^~~~~~~~~~~~~~~~~~~~~~~~~~</warning>
|
|
input.y:9.8-33: <note>note:</note> previous declaration
|
|
9 | %token <note>ABCDEFGHIJKLMNOPQRSTUVWXYZ</note> ABCDEFGHIJKLMN...
|
|
| <note>^~~~~~~~~~~~~~~~~~~~~~~~~~</note>
|
|
input.y:10.56-69: <warning>warning:</warning> deprecated directive: '%error-verbose', use '%define parse.error verbose' [<warning>-Wdeprecated</warning>]
|
|
10 | ... <warning>%error-verbose</warning>
|
|
| <warning>^~~~~~~~~~~~~~</warning>
|
|
| <fixit-insert>%define parse.error verbose</fixit-insert>
|
|
input.y: <warning>warning:</warning> fix-its can be applied. Rerun with option '--update'. [<warning>-Wother</warning>]
|
|
]],
|
|
[[COLUMNS=60]])
|
|
|
|
|
|
## ------------- ##
|
|
## Suggestions. ##
|
|
## ------------- ##
|
|
|
|
# Don't suggest to fix QUX with QUUX and QUUX with QUX...
|
|
AT_TEST([[Suggestions]],
|
|
[[%%
|
|
res: QUX baz
|
|
bar: QUUX
|
|
]],
|
|
[1],
|
|
[[input.y:10.6-8: <error>error:</error> symbol 'QUX' is used, but is not defined as a token and has no rules
|
|
10 | res: <error>QUX</error> baz
|
|
| <error>^~~</error>
|
|
input.y:10.10-12: <error>error:</error> symbol 'baz' is used, but is not defined as a token and has no rules; did you mean 'bar'?
|
|
10 | res: QUX <error>baz</error>
|
|
| <error>^~~</error>
|
|
| <fixit-insert>bar</fixit-insert>
|
|
input.y:11.6-9: <error>error:</error> symbol 'QUUX' is used, but is not defined as a token and has no rules
|
|
11 | bar: <error>QUUX</error>
|
|
| <error>^~~~</error>
|
|
]])
|
|
|
|
|
|
## ----------------- ##
|
|
## Counterexamples. ##
|
|
## ----------------- ##
|
|
|
|
AT_TEST([[Counterexamples]],
|
|
[[%expect 0
|
|
%%
|
|
exp
|
|
: "if" exp "then" exp
|
|
| "if" exp "then" exp "else" exp
|
|
| exp "+" exp
|
|
| "num"
|
|
]],
|
|
[1],
|
|
[[input.y: <error>error:</error> shift/reduce conflicts: 4 found, 0 expected
|
|
Shift/reduce conflict on token "+":
|
|
Example <cex-0><cex-1><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-0>
|
|
First derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
|
|
Example <cex-0><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf><cex-1> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-1></cex-0>
|
|
Second derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-1><cex-step> ]</cex-step></cex-0>
|
|
|
|
Shift/reduce conflict on token "else":
|
|
Example <cex-0><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot></cex-1> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-0>
|
|
First derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
|
|
Example <cex-0><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-1></cex-0>
|
|
Second derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-1><cex-step> ]</cex-step></cex-0>
|
|
|
|
Shift/reduce conflict on token "+":
|
|
Example <cex-0><cex-1><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-0>
|
|
First derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
|
|
Example <cex-0><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-1></cex-0>
|
|
Second derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-1><cex-step> ]</cex-step></cex-0>
|
|
|
|
Shift/reduce conflict on token "+":
|
|
Example <cex-0><cex-1><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-0>
|
|
First derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
|
|
Example <cex-0><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf><cex-1> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-1></cex-0>
|
|
Second derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-1><cex-step> ]</cex-step></cex-0>
|
|
|
|
]])
|
|
|
|
|
|
|
|
|
|
m4_popdef([AT_TEST])
|
|
|
|
|
|
|
|
|
|
## -------------------------------------- ##
|
|
## Indentation with message suppression. ##
|
|
## -------------------------------------- ##
|
|
|
|
AT_SETUP([[Indentation with message suppression]])
|
|
|
|
# https://lists.gnu.org/archive/html/bug-bison/2019-08/msg00002.html
|
|
|
|
AT_DATA([[input.y]],
|
|
[[%define api.pure
|
|
%pure-parser
|
|
%error-verbose
|
|
%%
|
|
exp : '0'
|
|
]])
|
|
|
|
AT_BISON_CHECK([[-fcaret -Wno-other input.y]], [0], [],
|
|
[[input.y:2.1-12: warning: deprecated directive: '%pure-parser', use '%define api.pure' [-Wdeprecated]
|
|
2 | %pure-parser
|
|
| ^~~~~~~~~~~~
|
|
| %define api.pure
|
|
input.y:3.1-14: warning: deprecated directive: '%error-verbose', use '%define parse.error verbose' [-Wdeprecated]
|
|
3 | %error-verbose
|
|
| ^~~~~~~~~~~~~~
|
|
| %define parse.error verbose
|
|
]])
|
|
|
|
AT_CLEANUP
|