use strict;
use warnings;
# ABSTRACT: a tolerance "m (-l or +n)"
package
Number::Tolerant::Type::offset;
use parent qw(Number::Tolerant::Type);
sub construct { shift;
{
value => $_[0],
min => $_[0] + $_[1],
max => $_[0] + $_[2]
}
}
sub parse {
my ($self, $string, $factory) = @_;
my $number = $self->number_re;
return $factory->new("$1", 'offset', "$2", "$3")
if $string =~ m!\A($number)\s+\(?\s*($number)\s+($number)\s*\)?\s*\z!;
return;
}
sub stringify {
my ($self) = @_;
return sprintf "%s (-%s +%s)",
$_[0]->{value},
($_[0]->{value} - $_[0]->{min}),
($_[0]->{max} - $_[0]->{value});
}
sub valid_args {
my $self = shift;
my $lhs_number = $self->normalize_number($_[0]);
my $minus_number = $self->normalize_number($_[2]);
my $plus_number = $self->normalize_number($_[3]);
return ($lhs_number, $minus_number, $plus_number)
if (grep { defined } @_) == 4
and defined $lhs_number
and $_[1] eq 'offset'
and defined $minus_number
and defined $plus_number;
return;
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Number::Tolerant::Type::offset - a tolerance "m (-l or +n)"
=head1 VERSION
version 1.703
=head1 AUTHOR
Ricardo Signes <rjbs@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2004 by Ricardo Signes.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut