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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/.
# Tests that include a grammar, an input, and an resolution
# error message, but no (or minimal?) semantics.
#
# The intent is that this file will contain tests of the
# valuator's resolution phase
use 5.010001;
use strict;
use warnings;
use Test::More tests => 6;
use English qw( -no_match_vars );
use lib 'inc';
use Marpa::R2::Test;
use Marpa::R2;
use Data::Dumper;
our $DEBUG = 0;
my @tests_data = ();
sub My_Semantics::new {}
####
{
my $grammar = \(<<'END_OF_SOURCE');
:start ::= test
test ::= 'X' action => nowhere
END_OF_SOURCE
push @tests_data, [ $grammar, 'X',
'Failure in value() method',
<<'END_OF_MESSAGE',
Could not resolve rule action named 'nowhere'
Rule was test ::= 'X'
Failed resolution of action "nowhere" to My_Semantics::nowhere
END_OF_MESSAGE
'Missing action' ];
}
####
# Test trivial grammar with action --
# Problem found by Jean-Damien
{
my $grammar = \(<<'END_OF_SOURCE');
:start ::= test
test ::= action => main::not_null
END_OF_SOURCE
push @tests_data, [ $grammar, q{},
'not null',
'Parse OK', 'Trivial grammar with action' ];
}
####
{
# Marpa::R2::Display
# name: inaccessible is fatal statement
# start-after-line: END_OF_SOURCE
# end-before-line: '^END_OF_SOURCE$'
my $source = <<'END_OF_SOURCE';
inaccessible is fatal by default
:default ::= action => [symbol, name, values]
lexeme default = action => [symbol, name, value]
start ::= stuff*
stuff ::= a | b
a ::= x
b ::= x
c ::= x
x ::= 'x'
END_OF_SOURCE
# Marpa::R2::Display::End
my $input = 'xxx';
my $expected_value = 'SLIF grammar failed';
push @tests_data,
[
\$source, $input, $expected_value,
"Inaccessible symbol: c\n", qq{test "inaccessible is fatal by default"}
];
}
###
TEST:
for my $test_data (@tests_data) {
my ( $source, $input, $expected_value, $expected_result, $test_name ) =
@{$test_data};
my ( $actual_value, $actual_result );
PROCESSING: {
my $grammar;
if (not defined eval {
$grammar =
Marpa::R2::Scanless::G->new( { source => $source } );
1;
}
)
{
say $EVAL_ERROR if $DEBUG;
my $abbreviated_error = $EVAL_ERROR;
chomp $abbreviated_error;
$abbreviated_error =~ s/^ Marpa[:][:]R2 \s+ exception \s+ at \s+ .* \z//xms;
$actual_value = 'SLIF grammar failed';
$actual_result = $abbreviated_error;
last PROCESSING;
} ## end if ( not defined eval { $grammar = Marpa::R2::Scanless::G...})
my $recce = Marpa::R2::Scanless::R->new(
{ grammar => $grammar, semantics_package => 'My_Semantics' } );
if ( not defined eval { $recce->read( \$input ); 1 } ) {
say $EVAL_ERROR if $DEBUG;
my $abbreviated_error = $EVAL_ERROR;
chomp $abbreviated_error;
$abbreviated_error =~ s/\n.*//xms;
$actual_value = 'No parse';
$actual_result = $abbreviated_error;
last PROCESSING;
} ## end if ( not defined eval { $recce->read( \$input ); 1 })
my $value_ref ;
if ( not defined eval { $value_ref = $recce->value(); 1 } ) {
say $EVAL_ERROR if $DEBUG;
my $abbreviated_error = $EVAL_ERROR;
chomp $abbreviated_error;
$abbreviated_error =~ s/^ Marpa[:][:]R2 \s+ exception \s+ at \s+ .* \z//xms;
$actual_value = 'Failure in value() method';
$actual_result = $abbreviated_error;
last PROCESSING;
}
if ( not defined $value_ref ) {
$actual_value = 'No parse';
$actual_result = 'Input read to end but no parse';
last PROCESSING;
}
$actual_value = ${$value_ref};
$actual_result = 'Parse OK';
last PROCESSING;
} ## end PROCESSING:
Marpa::R2::Test::is(
Data::Dumper::Dumper( \$actual_value ),
Data::Dumper::Dumper( \$expected_value ),
qq{Value of $test_name}
);
Marpa::R2::Test::is( $actual_result, $expected_result,
qq{Result of $test_name} );
} ## end for my $test_data (@tests_data)
# An example action, for tests which need one
sub main::not_null {
return 'not null';
}
# vim: expandtab shiftwidth=4:
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