bison/tests/output.at

# Checking the output filenames.                    -*- Autotest -*-

# Copyright (C) 2000-2002, 2005-2015, 2018-2020 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([[Output file names.]])

# AT_CHECK_FILES(EXPECTED-FILES, [IGNORED-FILES])
# -----------------------------------------------
# Check that the current directory contains FILE... (sorted).
m4_define([AT_CHECK_FILES],
[AT_REQUIRE([[find . -type f |
           "$PERL" -ne '
      s,\./,,; chomp;
      push @file, $_ unless m{^($2|testsuite.log)$};
      END { print join (" ", sort @file), "\n" }']],
          [], [$1
])])

# AT_CHECK_OUTPUT($1 = INPUT-FILE, $2 = [DIRECTIVES], $3 = [FLAGS],
#                 $4 = EXPECTED-FILES, $5 = [STATUS],
#                 $6 = [ADDITIONAL-TESTS], $7 = [PRE-TESTS])
# -----------------------------------------------------------------
m4_define([AT_CHECK_OUTPUT],
[AT_SETUP([[Output files: ]$2 $3])[
]$7[
for file in ]$1 $4[; do
  case $file in
    */*) mkdir -p `echo "$file" | sed 's,/[^/]*,,'`;;
  esac
done
]AT_DATA([$1],
[$2[
%%
foo: '0' {};
]])

# There is no AT_DATA_UNQUOTED.
if $EGREP 'at_dir' $1 >/dev/null; then
   AT_PERL_REQUIRE([-pi -e 's{\$at_dir}'"{$at_group_dir}g" $1])
   # On Cygwin, up to Perl 5.28, 'perl -pi' left a foo.bak file.
   AT_CHECK([rm -f $1.bak])
fi


AT_BISON_CHECK([$3 $1], [$5], [], [ignore])[
# Ignore the files non-generated files
]AT_CHECK_FILES([$4], [$1])[
]$6[
]AT_CLEANUP[
]])

AT_CHECK_OUTPUT([foo.y], [], [-dv],
                [foo.output foo.tab.c foo.tab.h])

# Some versions of Valgrind (at least valgrind-3.6.0.SVN-Debian) report
# "fgrep: write error: Bad file descriptor" when stdout is closed, so we
# skip this test group during maintainer-check-valgrind.
AT_CHECK_OUTPUT([foo.y], [], [-dv >&-],
                [foo.output foo.tab.c foo.tab.h],
                [], [],
                [AT_CHECK([[case "$PREBISON" in *valgrind*) exit 77;; esac]])])


# Check how api.header.include.
AT_CHECK_OUTPUT([foo.y], [], [-dv -o foo.c],
                [foo.c foo.h foo.output], [],
                [AT_CHECK([grep '#include "foo.h"' foo.c], [0], [ignore])])
AT_CHECK_OUTPUT([foo.y], [], [-dv -y],
                [y.output y.tab.c y.tab.h], [],
                [AT_CHECK([grep '#include "y.tab.h"' y.tab.c], [1], [ignore])])
AT_CHECK_OUTPUT([foo.y], [%define api.header.include {"./foo.h"}], [-dv -y],
                [y.output y.tab.c y.tab.h], [],
                [AT_CHECK([grep '#include "./foo.h"' y.tab.c], [0], [ignore])])


AT_CHECK_OUTPUT([foo.y], [], [-dv -o foo.tab.c],
                [foo.output foo.tab.c foo.tab.h])

AT_CHECK_OUTPUT([foo.y], [], [-dv -g --xml --fixed-output-files],
                [y.dot y.output y.tab.c y.tab.h y.xml])
AT_CHECK_OUTPUT([foo.y], [], [-dv -g --xml -y],
                [y.dot y.output y.tab.c y.tab.h y.xml])
AT_CHECK_OUTPUT([foo.y], [%require "3.4"], [-dv -g --xml -y],
                [y.gv y.output y.tab.c y.tab.h y.xml])
# With '-o y.tab.c', we expect 'y.output' etc. (for compatibility with Yacc).
AT_CHECK_OUTPUT([foo.y], [], [-dv -g --xml -o y.tab.c],
                [y.dot y.output y.tab.c y.tab.h y.xml])

AT_CHECK_OUTPUT([foo.y], [], [-dv -b bar],
                [bar.output bar.tab.c bar.tab.h])
AT_CHECK_OUTPUT([foo.y], [], [-dv -g -o foo.c],
                [foo.c foo.dot foo.h foo.output])


AT_CHECK_OUTPUT([foo.y], [%defines %verbose],      [],
                [foo.output foo.tab.c foo.tab.h])
AT_CHECK_OUTPUT([foo.y], [%defines %verbose %yacc],[],
                [y.output y.tab.c y.tab.h])

AT_CHECK_OUTPUT([foo.yy], [%defines %verbose %yacc],[],
                [y.output y.tab.c y.tab.h])

# Exercise %output and %file-prefix including deprecated '='
AT_CHECK_OUTPUT([foo.y], [%file-prefix "bar" %defines %verbose],      [],
                [bar.output bar.tab.c bar.tab.h])
AT_CHECK_OUTPUT([foo.y], [%output "bar.c" %defines %verbose %yacc],[],
                [bar.c bar.h bar.output])
AT_CHECK_OUTPUT([foo.y],
                [%file-prefix "baz" %output "bar.c" %defines %verbose %yacc],
                [],
                [bar.c bar.h bar.output])


# Check priorities of extension control.
AT_CHECK_OUTPUT([foo.yy], [%defines %verbose], [],
                [foo.output foo.tab.cc foo.tab.hh])

AT_CHECK_OUTPUT([foo.yy], [%defines %verbose ], [-o foo.c],
                [foo.c foo.h foo.output])

AT_CHECK_OUTPUT([foo.yy], [],
                [--defines=foo.hpp -o foo.c++],
                [foo.c++ foo.hpp])

AT_CHECK_OUTPUT([foo.yy], [%defines "foo.hpp"],
                [-o foo.c++],
                [foo.c++ foo.hpp])

AT_CHECK_OUTPUT([foo.yy], [],
                [-o foo.c++ --graph=foo.gph],
                [foo.c++ foo.gph])

# Do not generate code when there are early errors (even warnings as
# errors).
AT_CHECK_OUTPUT([foo.y], [%type <foo> useless],
                [--defines --graph --xml --report=all -Wall -Werror],
                [foo.dot foo.output foo.xml],
                [1])

# Do not generate code when there are late errors (even warnings as
# errors).
AT_CHECK_OUTPUT([foo.y], [%define useless],
                [--defines --graph --xml --report=all -Wall -Werror],
                [foo.dot foo.output foo.xml],
                [1])


## ------------ ##
## C++ output.  ##
## ------------ ##

m4_define([AT_CHECK_NO_SUBDIR_PART],
[# Also make sure that the includes do not refer to the subdirectory.
AT_CHECK([grep 'include .subdir/' $1.cc], 1, [])
AT_CHECK([grep 'include .subdir/' $1.hh], 1, [])
])

AT_CHECK_OUTPUT([foo.yy], [%skeleton "lalr1.cc"], [],
                [foo.tab.cc])

AT_CHECK_OUTPUT([foo.yy], [%skeleton "lalr1.cc" %verbose], [],
                [foo.output foo.tab.cc])

AT_CHECK_OUTPUT([foo.yy], [%skeleton "lalr1.cc" %defines %verbose], [],
                [foo.output foo.tab.cc foo.tab.hh stack.hh])

AT_CHECK_OUTPUT([foo.yy], [%skeleton "lalr1.cc" %verbose %locations], [],
                [foo.output foo.tab.cc])

AT_CHECK_OUTPUT([foo.yy], [%skeleton "lalr1.cc" %defines %verbose %locations], [],
                [foo.output foo.tab.cc foo.tab.hh location.hh position.hh stack.hh])

AT_CHECK_OUTPUT([subdir/foo.yy], [%skeleton "lalr1.cc" %defines %verbose], [],
                [foo.output foo.tab.cc foo.tab.hh stack.hh],
                [], [AT_CHECK_NO_SUBDIR_PART([foo.tab])])

AT_CHECK_OUTPUT([subdir/foo.yy], [%skeleton "lalr1.cc" %defines %verbose %locations],
                [-o subdir/foo.cc],
                [subdir/foo.cc subdir/foo.hh subdir/foo.output subdir/location.hh subdir/position.hh subdir/stack.hh],
                [], [AT_CHECK_NO_SUBDIR_PART([subdir/foo])])

AT_CHECK_OUTPUT([gram_dir/foo.yy],
                [%skeleton "lalr1.cc" %defines %verbose %file-prefix "output_dir/foo"],
                [],
                [output_dir/foo.output output_dir/foo.tab.cc output_dir/foo.tab.hh output_dir/stack.hh])

AT_CHECK_OUTPUT([gram_dir/foo.yy],
                [%skeleton "lalr1.cc" %defines %locations %verbose %file-prefix "output_dir/foo"],
                [],
                [output_dir/foo.output output_dir/foo.tab.cc output_dir/foo.tab.hh output_dir/location.hh output_dir/position.hh output_dir/stack.hh])

# %require "3.2" => no position.hh not stack.hh.
AT_CHECK_OUTPUT([foo.yy],
                [%skeleton "lalr1.cc" %defines %locations %define api.location.file none %require "3.2"],
                [],
                [foo.tab.cc foo.tab.hh])

AT_CHECK_OUTPUT([foo.yy],
                [%skeleton "lalr1.cc" %defines %locations %define api.location.file "foo.loc.hh" %require "3.2"],
                [],
                [foo.loc.hh foo.tab.cc foo.tab.hh])

# Absolute paths.
AT_CHECK_OUTPUT([foo.yy],
                [%skeleton "lalr1.cc" %defines %locations %define api.location.file "$at_dir/foo.loc.hh" %require "3.2"],
                [],
                [foo.loc.hh foo.tab.cc foo.tab.hh])


# AT_CHECK_CONFLICTING_OUTPUT(INPUT-FILE, DIRECTIVES, FLAGS, STDERR,
#                             [EXIT-STATUS])
# ------------------------------------------------------------------
m4_define([AT_CHECK_CONFLICTING_OUTPUT],
[AT_SETUP([Conflicting output files: $2 $3])
case "$1" in
  */*) mkdir `echo "$1" | sed 's,/.*,,'`;;
esac
AT_DATA([$1],
[[$2
%%
foo: {};
]])

[cp ]$1[ expout]
# Because an output file name conflict is still a warning, Bison exits
# with status 0, so AT_BISON_CHECK does not realize that there may be no
# output file against which to check the XML.  AT_BISON_CHECK_NO_XML
# avoids that problem.
AT_BISON_CHECK_NO_XML([$3 $1], $5, [], [$4])
AT_CHECK([[cat $1]], [[0]], [expout])
AT_CLEANUP
])

AT_CHECK_CONFLICTING_OUTPUT([foo.y],
[], [--graph="foo.tab.c"],
[[foo.y: warning: conflicting outputs to file 'foo.tab.c' [-Wother]
]])

AT_CHECK_CONFLICTING_OUTPUT([foo.y],
[%defines "foo.output"], [-v],
[[foo.y: warning: conflicting outputs to file 'foo.output' [-Wother]
]])

AT_CHECK_CONFLICTING_OUTPUT([foo.y],
[%skeleton "lalr1.cc" %defines %locations], [--graph="location.hh"],
[[foo.y: warning: conflicting outputs to file 'location.hh' [-Wother]
]])

AT_CHECK_CONFLICTING_OUTPUT([foo.y], [], [-o foo.y],
[[foo.y: error: refusing to overwrite the input file 'foo.y'
]], 1)


# AT_CHECK_OUTPUT_FILE_NAME(FILE-NAME-PREFIX, [ADDITIONAL-TESTS])
# ---------------------------------------------------------------
m4_define([AT_CHECK_OUTPUT_FILE_NAME],
[AT_SETUP([Output file name: $1])

AT_BISON_OPTION_PUSHDEFS
# Skip if platform doesn't support file name.  For example, Cygwin
# doesn't support file names containing ":" or "\".
AT_REQUIRE([[touch "]AS_ESCAPE([$1[.tmp]])["]])

AT_DATA_GRAMMAR([glr.y],
[[%glr-parser
%code {
]AT_YYERROR_DECLARE_EXTERN[
]AT_YYLEX_DECLARE_EXTERN[
}
%%
start: {};
]])
AT_BISON_CHECK([-o "AS_ESCAPE([$1.c])" --defines="AS_ESCAPE([$1.h])" glr.y])
AT_CHECK([ls "AS_ESCAPE([$1.c])" "AS_ESCAPE([$1.h])"], [], [ignore])
AT_COMPILE([glr.o], [-c "AS_ESCAPE([$1.c])"])
$2

AT_DATA_GRAMMAR([cxx.y],
[[%skeleton "lalr1.cc"
%code { int yylex (yy::parser::semantic_type*); }
%%
start: {};
]])
AT_BISON_CHECK([-o "AS_ESCAPE([$1.cc])" --defines="AS_ESCAPE([$1.hh])" cxx.y])
AT_CHECK([ls "AS_ESCAPE([$1.cc])" "AS_ESCAPE([$1.hh])"], [], [ignore])
AT_COMPILE_CXX([cxx.o], [-c "AS_ESCAPE([$1.cc])"])
$2

AT_BISON_OPTION_POPDEFS
AT_CLEANUP
])

# Notice that the header file name here cannot contain
# '"' since FILENAME in '#include "FILENAME"' cannot.
AT_CHECK_OUTPUT_FILE_NAME([[`~!@#$%^&*()-=_+{}[]|\:;<>, .']])
dnl Work around a bug in m4_expand that broke AT_SETUP in autoconf 2.62,
dnl by using the definition from 2.63.
m4_version_prereq([2.63], [],
[m4_define([m4_expand], [_$0(-=<{($1)}>=-)])
m4_define([_m4_expand],
[m4_changequote([-=<{(], [)}>=-])$1m4_changequote([, ])])])
AT_CHECK_OUTPUT_FILE_NAME([[(]])
AT_CHECK_OUTPUT_FILE_NAME([[)]])
AT_CHECK_OUTPUT_FILE_NAME([[@%:@]])
AT_CHECK_OUTPUT_FILE_NAME([[@@]])
AT_CHECK_OUTPUT_FILE_NAME([[@{]])
AT_CHECK_OUTPUT_FILE_NAME([[@}]])
AT_CHECK_OUTPUT_FILE_NAME([[@<:@]])
AT_CHECK_OUTPUT_FILE_NAME([[@:>@]])


# AT_TEST(SETUP-NAME, GRAMMAR, DOT-BODY)
# --------------------------------------
# Check that the DOT graph for GRAMMAR is DOT-BODY.
m4_pushdef([AT_TEST],
[AT_SETUP([$1])
AT_KEYWORDS([[graph]])
AT_DATA([[input.y]], [$2])
AT_BISON_CHECK([[-rall --graph input.y]], [0], [[]], [[ignore]])
AT_CHECK([[grep -v // input.dot]], [0],
[$3])
AT_CLEANUP
])


## ------------------------ ##
## Graph with no conflicts. ##
## ------------------------ ##

AT_TEST([Graph with no conflicts],
[[%%
exp: a '?' b;
a: ;
b: 'b';
]],
[[
digraph "input.y"
{
  node [fontname = courier, shape = box, colorscheme = paired6]
  edge [fontname = courier]

  0 [label="State 0\n\l  0 $accept: • exp $end\l  1 exp: • a '?' b\l  2 a: • %empty\l"]
  0 -> 1 [style=dashed label="exp"]
  0 -> 2 [style=dashed label="a"]
  0 -> "0R2" [style=solid]
 "0R2" [label="R2", fillcolor=3, shape=diamond, style=filled]
  1 [label="State 1\n\l  0 $accept: exp • $end\l"]
  1 -> 3 [style=solid label="$end"]
  2 [label="State 2\n\l  1 exp: a • '?' b\l"]
  2 -> 4 [style=solid label="'?'"]
  3 [label="State 3\n\l  0 $accept: exp $end •\l"]
  3 -> "3R0" [style=solid]
 "3R0" [label="Acc", fillcolor=1, shape=diamond, style=filled]
  4 [label="State 4\n\l  1 exp: a '?' • b\l  3 b: • 'b'\l"]
  4 -> 5 [style=solid label="'b'"]
  4 -> 6 [style=dashed label="b"]
  5 [label="State 5\n\l  3 b: 'b' •\l"]
  5 -> "5R3" [style=solid]
 "5R3" [label="R3", fillcolor=3, shape=diamond, style=filled]
  6 [label="State 6\n\l  1 exp: a '?' b •\l"]
  6 -> "6R1" [style=solid]
 "6R1" [label="R1", fillcolor=3, shape=diamond, style=filled]
}
]])

## ------------------------ ##
## Graph with unsolved S/R. ##
## ------------------------ ##

AT_TEST([Graph with unsolved S/R],
[[%%
start:
    'a'
  | empty_a 'a'
  | 'b'
  | empty_b 'b'
  | 'c'
  | empty_c 'c'
  ;
empty_a: %prec 'a';
empty_b: %prec 'b';
empty_c: %prec 'c';
]],
[[
digraph "input.y"
{
  node [fontname = courier, shape = box, colorscheme = paired6]
  edge [fontname = courier]

  0 [label="State 0\n\l  0 $accept: • start $end\l  1 start: • 'a'\l  2      | • empty_a 'a'\l  3      | • 'b'\l  4      | • empty_b 'b'\l  5      | • 'c'\l  6      | • empty_c 'c'\l  7 empty_a: • %empty  ['a']\l  8 empty_b: • %empty  ['b']\l  9 empty_c: • %empty  ['c']\l"]
  0 -> 1 [style=solid label="'a'"]
  0 -> 2 [style=solid label="'b'"]
  0 -> 3 [style=solid label="'c'"]
  0 -> 4 [style=dashed label="start"]
  0 -> 5 [style=dashed label="empty_a"]
  0 -> 6 [style=dashed label="empty_b"]
  0 -> 7 [style=dashed label="empty_c"]
  0 -> "0R7d" [label="['a']", style=solid]
 "0R7d" [label="R7", fillcolor=5, shape=diamond, style=filled]
  0 -> "0R8d" [label="['b']", style=solid]
 "0R8d" [label="R8", fillcolor=5, shape=diamond, style=filled]
  0 -> "0R9d" [label="['c']", style=solid]
 "0R9d" [label="R9", fillcolor=5, shape=diamond, style=filled]
  1 [label="State 1\n\l  1 start: 'a' •\l"]
  1 -> "1R1" [style=solid]
 "1R1" [label="R1", fillcolor=3, shape=diamond, style=filled]
  2 [label="State 2\n\l  3 start: 'b' •\l"]
  2 -> "2R3" [style=solid]
 "2R3" [label="R3", fillcolor=3, shape=diamond, style=filled]
  3 [label="State 3\n\l  5 start: 'c' •\l"]
  3 -> "3R5" [style=solid]
 "3R5" [label="R5", fillcolor=3, shape=diamond, style=filled]
  4 [label="State 4\n\l  0 $accept: start • $end\l"]
  4 -> 8 [style=solid label="$end"]
  5 [label="State 5\n\l  2 start: empty_a • 'a'\l"]
  5 -> 9 [style=solid label="'a'"]
  6 [label="State 6\n\l  4 start: empty_b • 'b'\l"]
  6 -> 10 [style=solid label="'b'"]
  7 [label="State 7\n\l  6 start: empty_c • 'c'\l"]
  7 -> 11 [style=solid label="'c'"]
  8 [label="State 8\n\l  0 $accept: start $end •\l"]
  8 -> "8R0" [style=solid]
 "8R0" [label="Acc", fillcolor=1, shape=diamond, style=filled]
  9 [label="State 9\n\l  2 start: empty_a 'a' •\l"]
  9 -> "9R2" [style=solid]
 "9R2" [label="R2", fillcolor=3, shape=diamond, style=filled]
  10 [label="State 10\n\l  4 start: empty_b 'b' •\l"]
  10 -> "10R4" [style=solid]
 "10R4" [label="R4", fillcolor=3, shape=diamond, style=filled]
  11 [label="State 11\n\l  6 start: empty_c 'c' •\l"]
  11 -> "11R6" [style=solid]
 "11R6" [label="R6", fillcolor=3, shape=diamond, style=filled]
}
]])

## ---------------------- ##
## Graph with solved S/R. ##
## ---------------------- ##

AT_TEST([Graph with solved S/R],
[[%left 'a'
%right 'b'
%right 'c'
%%
start:
    'a'
  | empty_a 'a'
  | 'b'
  | empty_b 'b'
  | 'c'
  | empty_c 'c'
  ;
empty_a: %prec 'a';
empty_b: %prec 'b';
empty_c: %prec 'c';
]],
[[
digraph "input.y"
{
  node [fontname = courier, shape = box, colorscheme = paired6]
  edge [fontname = courier]

  0 [label="State 0\n\l  0 $accept: • start $end\l  1 start: • 'a'\l  2      | • empty_a 'a'\l  3      | • 'b'\l  4      | • empty_b 'b'\l  5      | • 'c'\l  6      | • empty_c 'c'\l  7 empty_a: • %empty  ['a']\l  8 empty_b: • %empty  []\l  9 empty_c: • %empty  []\l"]
  0 -> 1 [style=solid label="'b'"]
  0 -> 2 [style=solid label="'c'"]
  0 -> 3 [style=dashed label="start"]
  0 -> 4 [style=dashed label="empty_a"]
  0 -> 5 [style=dashed label="empty_b"]
  0 -> 6 [style=dashed label="empty_c"]
  0 -> "0R7" [style=solid]
 "0R7" [label="R7", fillcolor=3, shape=diamond, style=filled]
  1 [label="State 1\n\l  3 start: 'b' •\l"]
  1 -> "1R3" [style=solid]
 "1R3" [label="R3", fillcolor=3, shape=diamond, style=filled]
  2 [label="State 2\n\l  5 start: 'c' •\l"]
  2 -> "2R5" [style=solid]
 "2R5" [label="R5", fillcolor=3, shape=diamond, style=filled]
  3 [label="State 3\n\l  0 $accept: start • $end\l"]
  3 -> 7 [style=solid label="$end"]
  4 [label="State 4\n\l  2 start: empty_a • 'a'\l"]
  4 -> 8 [style=solid label="'a'"]
  5 [label="State 5\n\l  4 start: empty_b • 'b'\l"]
  5 -> 9 [style=solid label="'b'"]
  6 [label="State 6\n\l  6 start: empty_c • 'c'\l"]
  6 -> 10 [style=solid label="'c'"]
  7 [label="State 7\n\l  0 $accept: start $end •\l"]
  7 -> "7R0" [style=solid]
 "7R0" [label="Acc", fillcolor=1, shape=diamond, style=filled]
  8 [label="State 8\n\l  2 start: empty_a 'a' •\l"]
  8 -> "8R2" [style=solid]
 "8R2" [label="R2", fillcolor=3, shape=diamond, style=filled]
  9 [label="State 9\n\l  4 start: empty_b 'b' •\l"]
  9 -> "9R4" [style=solid]
 "9R4" [label="R4", fillcolor=3, shape=diamond, style=filled]
  10 [label="State 10\n\l  6 start: empty_c 'c' •\l"]
  10 -> "10R6" [style=solid]
 "10R6" [label="R6", fillcolor=3, shape=diamond, style=filled]
}
]])

## ---------------- ##
## Graph with  R/R. ##
## ---------------- ##

AT_TEST([Graph with R/R],
[[%%
exp: a | b;
a: ;
b: ;
]],
[[
digraph "input.y"
{
  node [fontname = courier, shape = box, colorscheme = paired6]
  edge [fontname = courier]

  0 [label="State 0\n\l  0 $accept: • exp $end\l  1 exp: • a\l  2    | • b\l  3 a: • %empty  [$end]\l  4 b: • %empty  [$end]\l"]
  0 -> 1 [style=dashed label="exp"]
  0 -> 2 [style=dashed label="a"]
  0 -> 3 [style=dashed label="b"]
  0 -> "0R3" [style=solid]
 "0R3" [label="R3", fillcolor=3, shape=diamond, style=filled]
  0 -> "0R4d" [label="[$end]", style=solid]
 "0R4d" [label="R4", fillcolor=5, shape=diamond, style=filled]
  1 [label="State 1\n\l  0 $accept: exp • $end\l"]
  1 -> 4 [style=solid label="$end"]
  2 [label="State 2\n\l  1 exp: a •\l"]
  2 -> "2R1" [style=solid]
 "2R1" [label="R1", fillcolor=3, shape=diamond, style=filled]
  3 [label="State 3\n\l  2 exp: b •\l"]
  3 -> "3R2" [style=solid]
 "3R2" [label="R2", fillcolor=3, shape=diamond, style=filled]
  4 [label="State 4\n\l  0 $accept: exp $end •\l"]
  4 -> "4R0" [style=solid]
 "4R0" [label="Acc", fillcolor=1, shape=diamond, style=filled]
}
]])

## ---------------------------------------- ##
## Graph with reductions with multiple LAT. ##
## ---------------------------------------- ##

AT_TEST([Graph with reductions with multiple LAT],
[[%%
exp: a ';' | a ';' | a '.' | b '?' | b '!' | c '?' | c ';';
a: ;
b: ;
c: ;
]],
[[
digraph "input.y"
{
  node [fontname = courier, shape = box, colorscheme = paired6]
  edge [fontname = courier]

  0 [label="State 0\n\l  0 $accept: • exp $end\l  1 exp: • a ';'\l  2    | • a ';'\l  3    | • a '.'\l  4    | • b '?'\l  5    | • b '!'\l  6    | • c '?'\l  7    | • c ';'\l  8 a: • %empty  [';', '.']\l  9 b: • %empty  ['?', '!']\l 10 c: • %empty  [';', '?']\l"]
  0 -> 1 [style=dashed label="exp"]
  0 -> 2 [style=dashed label="a"]
  0 -> 3 [style=dashed label="b"]
  0 -> 4 [style=dashed label="c"]
  0 -> "0R8" [style=solid]
 "0R8" [label="R8", fillcolor=3, shape=diamond, style=filled]
  0 -> "0R9" [label="['?', '!']", style=solid]
 "0R9" [label="R9", fillcolor=3, shape=diamond, style=filled]
  0 -> "0R10d" [label="[';', '?']", style=solid]
 "0R10d" [label="R10", fillcolor=5, shape=diamond, style=filled]
  1 [label="State 1\n\l  0 $accept: exp • $end\l"]
  1 -> 5 [style=solid label="$end"]
  2 [label="State 2\n\l  1 exp: a • ';'\l  2    | a • ';'\l  3    | a • '.'\l"]
  2 -> 6 [style=solid label="';'"]
  2 -> 7 [style=solid label="'.'"]
  3 [label="State 3\n\l  4 exp: b • '?'\l  5    | b • '!'\l"]
  3 -> 8 [style=solid label="'?'"]
  3 -> 9 [style=solid label="'!'"]
  4 [label="State 4\n\l  6 exp: c • '?'\l  7    | c • ';'\l"]
  4 -> 10 [style=solid label="';'"]
  4 -> 11 [style=solid label="'?'"]
  5 [label="State 5\n\l  0 $accept: exp $end •\l"]
  5 -> "5R0" [style=solid]
 "5R0" [label="Acc", fillcolor=1, shape=diamond, style=filled]
  6 [label="State 6\n\l  1 exp: a ';' •  [$end]\l  2    | a ';' •  [$end]\l"]
  6 -> "6R1" [style=solid]
 "6R1" [label="R1", fillcolor=3, shape=diamond, style=filled]
  6 -> "6R2d" [label="[$end]", style=solid]
 "6R2d" [label="R2", fillcolor=5, shape=diamond, style=filled]
  7 [label="State 7\n\l  3 exp: a '.' •\l"]
  7 -> "7R3" [style=solid]
 "7R3" [label="R3", fillcolor=3, shape=diamond, style=filled]
  8 [label="State 8\n\l  4 exp: b '?' •\l"]
  8 -> "8R4" [style=solid]
 "8R4" [label="R4", fillcolor=3, shape=diamond, style=filled]
  9 [label="State 9\n\l  5 exp: b '!' •\l"]
  9 -> "9R5" [style=solid]
 "9R5" [label="R5", fillcolor=3, shape=diamond, style=filled]
  10 [label="State 10\n\l  7 exp: c ';' •\l"]
  10 -> "10R7" [style=solid]
 "10R7" [label="R7", fillcolor=3, shape=diamond, style=filled]
  11 [label="State 11\n\l  6 exp: c '?' •\l"]
  11 -> "11R6" [style=solid]
 "11R6" [label="R6", fillcolor=3, shape=diamond, style=filled]
}
]])

## ------------------------------------------------------ ##
## Graph with a reduction rule both enabled and disabled. ##
## ------------------------------------------------------ ##

AT_TEST([Graph with a reduction rule both enabled and disabled],
[[%%
exp: ifexp | opexp | imm;
ifexp: "if" exp "then" exp elseexp;
elseexp: "else" exp | ;
opexp: exp '+' exp;
imm: '0';
]],
[[
digraph "input.y"
{
  node [fontname = courier, shape = box, colorscheme = paired6]
  edge [fontname = courier]

  0 [label="State 0\n\l  0 $accept: • exp $end\l  1 exp: • ifexp\l  2    | • opexp\l  3    | • imm\l  4 ifexp: • \"if\" exp \"then\" exp elseexp\l  7 opexp: • exp '+' exp\l  8 imm: • '0'\l"]
  0 -> 1 [style=solid label="\"if\""]
  0 -> 2 [style=solid label="'0'"]
  0 -> 3 [style=dashed label="exp"]
  0 -> 4 [style=dashed label="ifexp"]
  0 -> 5 [style=dashed label="opexp"]
  0 -> 6 [style=dashed label="imm"]
  1 [label="State 1\n\l  1 exp: • ifexp\l  2    | • opexp\l  3    | • imm\l  4 ifexp: • \"if\" exp \"then\" exp elseexp\l  4      | \"if\" • exp \"then\" exp elseexp\l  7 opexp: • exp '+' exp\l  8 imm: • '0'\l"]
  1 -> 1 [style=solid label="\"if\""]
  1 -> 2 [style=solid label="'0'"]
  1 -> 7 [style=dashed label="exp"]
  1 -> 4 [style=dashed label="ifexp"]
  1 -> 5 [style=dashed label="opexp"]
  1 -> 6 [style=dashed label="imm"]
  2 [label="State 2\n\l  8 imm: '0' •\l"]
  2 -> "2R8" [style=solid]
 "2R8" [label="R8", fillcolor=3, shape=diamond, style=filled]
  3 [label="State 3\n\l  0 $accept: exp • $end\l  7 opexp: exp • '+' exp\l"]
  3 -> 8 [style=solid label="$end"]
  3 -> 9 [style=solid label="'+'"]
  4 [label="State 4\n\l  1 exp: ifexp •\l"]
  4 -> "4R1" [style=solid]
 "4R1" [label="R1", fillcolor=3, shape=diamond, style=filled]
  5 [label="State 5\n\l  2 exp: opexp •\l"]
  5 -> "5R2" [style=solid]
 "5R2" [label="R2", fillcolor=3, shape=diamond, style=filled]
  6 [label="State 6\n\l  3 exp: imm •\l"]
  6 -> "6R3" [style=solid]
 "6R3" [label="R3", fillcolor=3, shape=diamond, style=filled]
  7 [label="State 7\n\l  4 ifexp: \"if\" exp • \"then\" exp elseexp\l  7 opexp: exp • '+' exp\l"]
  7 -> 10 [style=solid label="\"then\""]
  7 -> 9 [style=solid label="'+'"]
  8 [label="State 8\n\l  0 $accept: exp $end •\l"]
  8 -> "8R0" [style=solid]
 "8R0" [label="Acc", fillcolor=1, shape=diamond, style=filled]
  9 [label="State 9\n\l  1 exp: • ifexp\l  2    | • opexp\l  3    | • imm\l  4 ifexp: • \"if\" exp \"then\" exp elseexp\l  7 opexp: • exp '+' exp\l  7      | exp '+' • exp\l  8 imm: • '0'\l"]
  9 -> 1 [style=solid label="\"if\""]
  9 -> 2 [style=solid label="'0'"]
  9 -> 11 [style=dashed label="exp"]
  9 -> 4 [style=dashed label="ifexp"]
  9 -> 5 [style=dashed label="opexp"]
  9 -> 6 [style=dashed label="imm"]
  10 [label="State 10\n\l  1 exp: • ifexp\l  2    | • opexp\l  3    | • imm\l  4 ifexp: • \"if\" exp \"then\" exp elseexp\l  4      | \"if\" exp \"then\" • exp elseexp\l  7 opexp: • exp '+' exp\l  8 imm: • '0'\l"]
  10 -> 1 [style=solid label="\"if\""]
  10 -> 2 [style=solid label="'0'"]
  10 -> 12 [style=dashed label="exp"]
  10 -> 4 [style=dashed label="ifexp"]
  10 -> 5 [style=dashed label="opexp"]
  10 -> 6 [style=dashed label="imm"]
  11 [label="State 11\n\l  7 opexp: exp • '+' exp\l  7      | exp '+' exp •  [$end, \"then\", \"else\", '+']\l"]
  11 -> 9 [style=solid label="'+'"]
  11 -> "11R7d" [label="['+']", style=solid]
 "11R7d" [label="R7", fillcolor=5, shape=diamond, style=filled]
  11 -> "11R7" [style=solid]
 "11R7" [label="R7", fillcolor=3, shape=diamond, style=filled]
  12 [label="State 12\n\l  4 ifexp: \"if\" exp \"then\" exp • elseexp\l  5 elseexp: • \"else\" exp\l  6        | • %empty  [$end, \"then\", \"else\", '+']\l  7 opexp: exp • '+' exp\l"]
  12 -> 13 [style=solid label="\"else\""]
  12 -> 9 [style=solid label="'+'"]
  12 -> 14 [style=dashed label="elseexp"]
  12 -> "12R6d" [label="[\"else\", '+']", style=solid]
 "12R6d" [label="R6", fillcolor=5, shape=diamond, style=filled]
  12 -> "12R6" [style=solid]
 "12R6" [label="R6", fillcolor=3, shape=diamond, style=filled]
  13 [label="State 13\n\l  1 exp: • ifexp\l  2    | • opexp\l  3    | • imm\l  4 ifexp: • \"if\" exp \"then\" exp elseexp\l  5 elseexp: \"else\" • exp\l  7 opexp: • exp '+' exp\l  8 imm: • '0'\l"]
  13 -> 1 [style=solid label="\"if\""]
  13 -> 2 [style=solid label="'0'"]
  13 -> 15 [style=dashed label="exp"]
  13 -> 4 [style=dashed label="ifexp"]
  13 -> 5 [style=dashed label="opexp"]
  13 -> 6 [style=dashed label="imm"]
  14 [label="State 14\n\l  4 ifexp: \"if\" exp \"then\" exp elseexp •\l"]
  14 -> "14R4" [style=solid]
 "14R4" [label="R4", fillcolor=3, shape=diamond, style=filled]
  15 [label="State 15\n\l  5 elseexp: \"else\" exp •  [$end, \"then\", \"else\", '+']\l  7 opexp: exp • '+' exp\l"]
  15 -> 9 [style=solid label="'+'"]
  15 -> "15R5d" [label="['+']", style=solid]
 "15R5d" [label="R5", fillcolor=5, shape=diamond, style=filled]
  15 -> "15R5" [style=solid]
 "15R5" [label="R5", fillcolor=3, shape=diamond, style=filled]
}
]])

m4_popdef([AT_TEST])


## -------------------------------- ##
## C++ Output File Prefix Mapping.  ##
## -------------------------------- ##

AT_SETUP([C++ Output File Prefix Mapping])

# AT_TEST([PREFIX], [DIRECTIVES])
m4_pushdef([AT_TEST],
[AT_BISON_OPTION_PUSHDEFS([%skeleton "lalr1.cc" %define api.namespace {$1} $2])
AT_LOC_PUSHDEF([begin.line], [begin.column], [end.line], [end.column])
AT_DATA_GRAMMAR([$1.yy],
[[%skeleton "lalr1.cc"
%define api.namespace {$1}
$2
%code {
  ]AT_YYERROR_DECLARE[
  ]AT_YYLEX_DECLARE[
}
%%
exp: '0';
%%
]AT_YYERROR_DEFINE[
]AT_YYLEX_DEFINE(["0"])[
]])

AT_BISON_CHECK([-fcaret -o out/$1.cc -M out/=bar/ $1.yy])
AT_LANG_COMPILE([out/$1.o], [], [-Iout/include])

AT_LOC_POPDEF
AT_BISON_OPTION_POPDEFS
])

mkdir -p out/include/ast

AT_TEST([x1],
        [%defines
         %locations
         %define api.location.file "include/ast/loc.hh"
         ])

# Check the CPP guard and Doxyen comments.
AT_CHECK([sed -ne 's/#line [0-9]\+ "/#line "/p;/INCLUDED/p;/\\file/{p;n;p;}' out/include/ast/loc.hh], [],
[[ ** \file bar/include/ast/loc.hh
 ** Define the x1::location class.
#ifndef YY_YY_BAR_INCLUDE_AST_LOC_HH_INCLUDED
# define YY_YY_BAR_INCLUDE_AST_LOC_HH_INCLUDED
#line "x1.yy"
#line "bar/include/ast/loc.hh"
#line "x1.yy"
#line "bar/include/ast/loc.hh"
#endif // !YY_YY_BAR_INCLUDE_AST_LOC_HH_INCLUDED
]])

AT_CHECK([sed -ne 's/^#line [0-9]\+ "/#line "/p;/INCLUDED/p;/\\file/{p;n;p;}' out/x1.hh], [],
[[ ** \file bar/x1.hh
 ** Define the x1::parser class.
#ifndef YY_YY_BAR_X1_HH_INCLUDED
# define YY_YY_BAR_X1_HH_INCLUDED
#line "x1.yy"
#line "bar/x1.hh"
#line "x1.yy"
#line "bar/x1.hh"
#endif // !YY_YY_BAR_X1_HH_INCLUDED
]])

AT_TEST([x2],
        [%defines
         %locations
         %code requires {#include "include/ast/loc.hh"}
         %define api.location.type {x1::location}])

m4_popdef([AT_TEST])

AT_DATA([main.cc],
[AT_DATA_SOURCE_PROLOGUE
[#include "x1.hh"
#include "x2.hh"

#define RUN(S)                                  \
  do {                                          \
    S::parser parser;                           \
    int res = parser.parse();                   \
    if (res)                                    \
      std::cerr << #S": " << res << '\n';       \
  } while (false)

int
main (void)
{
  RUN(x1);
  RUN(x2);
}
]])# main.cc

AT_COMPILE_CXX([parser], [[out/x[12].o main.cc]], [-Iout/])
AT_PARSER_CHECK([parser], [0])

AT_CLEANUP