1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178
|
#!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/.
# Synopsis tests
# Test SLIF -- predicted, nulled and completed events with
# deactivation and reactivation, initialization at DSL time,
# initialization override at recce creation time
use 5.010001;
use strict;
use warnings;
use Test::More tests => 10;
use English qw( -no_match_vars );
use lib 'inc';
use Marpa::R2::Test;
use Marpa::R2;
my $rules = <<'END_OF_GRAMMAR';
:start ::= sequence
sequence ::= A B C D
action => OK
A ::= 'a'
A ::= # empty
B ::= 'b'
B ::= # empty
C ::= 'c'
C ::= # empty
D ::= 'd'
D ::= # empty
# Marpa::R2::Display
# name: SLIF predicted event statement synopsis
event '^a' = predicted A
event '^b'=off = predicted B
event '^c'=on = predicted C
event '^d' = predicted D
# Marpa::R2::Display::End
# Marpa::R2::Display
# name: SLIF completed event statement synopsis
event 'a' = completed A
event 'b'=off = completed B
event 'c'=on = completed C
event 'd' = completed D
# Marpa::R2::Display::End
# Marpa::R2::Display
# name: SLIF nulled event statement synopsis
event '!a' = nulled A
event '!b'=off = nulled B
event '!c'=on = nulled C
event '!d' = nulled D
# Marpa::R2::Display::End
END_OF_GRAMMAR
# This test the order of events
# No more than one of each event type per line
# so that order is non-arbitrary
my $location_0_events = qq{0 !a !b !c !d ^a ^b ^c ^d\n};
my $after_0_events = <<'END_OF_EVENTS';
1 a !b !c !d ^b ^c ^d
2 b !c !d ^c ^d
3 c !d ^d
4 d
END_OF_EVENTS
my $grammar = Marpa::R2::Scanless::G->new( { source => \$rules } );
my @events = map { ( '!' . $_, '^' . $_, $_ ) } qw(a b c d);
# Test of all events
my $events_expected = $location_0_events . $after_0_events ;
$events_expected =~ s/ [!^]? b \s //xmsg; # Eliminate b events
do_test( "all events", $grammar, q{abcd}, $events_expected );
$events_expected = $location_0_events . join "\n", ( 1 .. 4 ), q{};
$events_expected =~ s/ [!^]? b \s //xmsg; # Eliminate b events
do_test( "all events deactivated",
$grammar, q{abcd}, $events_expected, [] );
# Add events for symbol b
my %event_is_active = map { ( $_, 1 ) } @events;
my $extra_recce_arg = { 'event_is_active' => \%event_is_active };
$events_expected = $location_0_events . $after_0_events ;
do_test( 'all events activated in $recce->new()', $grammar, q{abcd}, $events_expected, undef,
$extra_recce_arg );
$events_expected = $location_0_events . join "\n", ( 1 .. 4 ), q{};
do_test( 'all events activated in $recce->new(), then deactivated',
$grammar, q{abcd}, $events_expected, [], $extra_recce_arg );
$event_is_active{$_} = 0 for keys %event_is_active;
$events_expected = join "\n", (0 .. 4), q{};
do_test( 'all events deactivated in $recce->new(), then deactivated again',
$grammar, q{abcd}, $events_expected, [], $extra_recce_arg );
sub show_last_subtext {
my ($recce) = @_;
my ( $start, $end ) = $recce->last_completed_range('subtext');
return 'No expression was successfully parsed' if not defined $start;
return $recce->range_to_string( $start, $end );
}
sub do_test {
my ( $test, $slg, $string, $expected_events, $reactivate_events, $recce_args ) = @_;
$recce_args //= {};
my $recce = Marpa::R2::Scanless::R->new(
{ grammar => $grammar, semantics_package => 'My_Actions' }, $recce_args );
if (defined $reactivate_events) {
# Marpa::R2::Display
# name: SLIF activate() method synopsis
$recce->activate($_, 0) for @events;
# Marpa::R2::Display::End
$recce->activate($_) for @{$reactivate_events};
}
my @actual_events = ();
my $length = length $string;
my $pos = $recce->read( \$string );
READ: while (1) {
EVENT:
for my $event ( @{ $recce->events() } ) {
my ($name) = @{$event};
push @{$actual_events[$pos]}, $name;
}
last READ if $pos >= $length;
$pos = $recce->resume($pos);
} ## end READ: while (1)
my $value_ref = $recce->value();
if ( not defined $value_ref ) {
die "No parse\n";
}
my $actual_value = ${$value_ref};
my $actual_events = q{};
for (my $i = 0; $i <= $length; $i++) {
my $events = $actual_events[$i] // [];
$actual_events .= join " ", $i, @{$events};
$actual_events .= "\n";
}
Test::More::is( $actual_value, q{1792}, qq{Value for $test} );
Marpa::R2::Test::is( $actual_events, $expected_events,
qq{Events for $test} );
} ## end sub do_test
sub My_Actions::OK { return 1792 };
# vim: expandtab shiftwidth=4:
|