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#!perl
# Copyright 2022 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 5.010001;
use strict;
use warnings;
use Test::More tests => 8;
use Data::Dumper;
use English qw( -no_match_vars );
use POSIX qw(setlocale LC_ALL);
POSIX::setlocale( LC_ALL, "C" );
use lib 'inc';
use Marpa::R2::Test;
use Marpa::R2;
my @tests_data = ();
my @results = ();
# Marpa::R2::Display
# name: Rank document synopsis
my $source = <<'END_OF_SOURCE';
:discard ~ ws; ws ~ [\s]+
:default ::= action => ::array
Top ::= List action => main::group
List ::= Item3 rank => 3
List ::= Item2 rank => 2
List ::= Item1 rank => 1
List ::= List Item3 rank => 3
List ::= List Item2 rank => 2
List ::= List Item1 rank => 1
Item3 ::= VAR '=' VAR action => main::concat
Item2 ::= VAR '=' action => main::concat
Item1 ::= VAR action => main::concat
VAR ~ [\w]+
END_OF_SOURCE
my @tests = (
[ 'a', '(a)', ],
[ 'a = b', '(a=b)', ],
[ 'a = b = c', '(a=)(b=c)', ],
[ 'a = b = c = d', '(a=)(b=)(c=d)', ],
[ 'a = b c = d', '(a=b)(c=d)' ],
[ 'a = b c = d e =', '(a=b)(c=d)(e=)' ],
[ 'a = b c = d e', '(a=b)(c=d)(e)' ],
[ 'a = b c = d e = f', '(a=b)(c=d)(e=f)' ],
);
my $grammar = Marpa::R2::Scanless::G->new( { source => \$source } );
for my $test (@tests) {
my ( $input, $output ) = @{$test};
my $recce = Marpa::R2::Scanless::R->new(
{
grammar => $grammar,
ranking_method => 'high_rule_only'
}
);
$recce->read( \$input );
my $value_ref = $recce->value();
if ( not defined $value_ref ) {
die 'No parse';
}
push @results, ${$value_ref};
}
# Marpa::R2::Display::End
for my $ix ( 0 .. $#tests ) {
my ( $input, $output ) = @{$tests[$ix]};
my $result = $results[$ix];
Test::More::is( $result, $output,
sprintf( 'Ranking synopsis test #%d: "%s"', $ix, $input ) );
}
# Marpa::R2::Display
# name: rank example semantics
sub flatten {
my ($array) = @_;
# say STDERR 'flatten arg: ', Data::Dumper::Dumper($array);
my $ref = ref $array;
return [$array] if $ref ne 'ARRAY';
my @flat = ();
ELEMENT: for my $element ( @{$array} ) {
my $ref = ref $element;
if ( $ref ne 'ARRAY' ) {
push @flat, $element;
next ELEMENT;
}
my $flat_piece = flatten($element);
push @flat, @{$flat_piece};
}
return \@flat;
}
sub concat {
my ( $pp, @args ) = @_;
# say STDERR 'concat: ', Data::Dumper::Dumper(\@args);
my $flat = flatten( \@args );
return join '', @{$flat};
}
sub group {
my ( $pp, @args ) = @_;
# say STDERR 'comma_sep args: ', Data::Dumper::Dumper(\@args);
my $flat = flatten( \@args );
return join '', map { +'(' . $_ . ')'; } @{$flat};
}
# Marpa::R2::Display::End
# vim: expandtab shiftwidth=4:
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