#!perl
# Copyright 2014 Jeffrey Kegler
# This file is part of Marpa::R2. Marpa::R2 is free software: you can
# redistribute it and/or modify it under the terms of the GNU Lesser
# General Public License as published by the Free Software Foundation,
# either version 3 of the License, or (at your option) any later version.
#
# Marpa::R2 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser
# General Public License along with Marpa::R2. If not, see
# http://www.gnu.org/licenses/.
use 5.010;
# Small NAIF tests
use strict;
use warnings;
use Test::More tests => 1;
use lib 'inc';
use Marpa::R2::Test;
use Marpa::R2;
use Data::Dumper;
my $grammar = Marpa::R2::Grammar->new( {
start => 'start',
actions => 'main',
default_action => 'My_Actions::dwim',
rules => [
[ start => [qw/x y/] ],
],
} );
$grammar->precompute;
my $rec = Marpa::R2::Recognizer->new( { grammar => $grammar } );
$rec->alternative('x',\undef, 1);
$rec->earleme_complete;
$rec->alternative('y',\"some", 1);
$rec->earleme_complete;
my $value_ref = $rec->value();
die if not defined $value_ref;
Test::More::is_deeply(
${$value_ref},
[ undef, 'some' ],
"Regression test of ref to undef as toke value"
);
sub My_Actions::dwim {
shift;
return $_[0] if scalar @_ == 1;
return [@_];
}
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