File Coverage

blib/lib/Farly/Object/Set.pm

Criterion	Covered	Total	%
statement	92	104	88.4
branch	33	48	68.7
condition			n/a
subroutine	15	17	88.2
pod	12	13	92.3
total	152	182	83.5

package Farly::Object::Set;

use 5.008008;
use strict;
use warnings;
use Carp;

our $VERSION = '0.26';

sub new {
    my ($class) = @_;
    return bless [], $class;
}

sub add {
    my ( $self, $object ) = @_;

    croak "Farly::Object object required"
      unless ( defined $object );

    croak "Farly::Object object required"
      unless ( $object->isa('Farly::Object') );

    push @{$self}, $object;
}

sub size {
    return scalar( @{ $_[0] } );
}

sub iter {
    return @{ $_[0] };
}

sub equals {
    my ( $self, $other ) = @_;

    if ( $other->isa(__PACKAGE__) ) {

        if ( $self->size() != $other->size() ) {
            return undef;
        }

        foreach my $s ( $self->iter() ) {
            my $match;
            foreach my $o ( $other->iter() ) {
                if ( $s->equals($o) ) {
                    $match = 1;
                }
            }
            if ( !$match ) {
                return undef;
            }
        }

        return 1;
    }
}

sub contains {
    my ( $self, $other ) = @_;

    if ( $other->isa(__PACKAGE__) ) {

        foreach my $o ( $other->iter() ) {
            my $contained;
            foreach my $s ( $self->iter() ) {
                if ( $s->contains($o) ) {
                    $contained = 1;
                    last;
                }
            }
            if ( !$contained ) {
                return undef;
            }
        }
        return 1;
    }

    if ( $other->isa('Farly::Object') ) {
        foreach my $s ( $self->iter() ) {
            return 1 if ( $s->contains($other) );
        }
    }
}

sub includes {
    my ( $self, $other ) = @_;

    if ( $other->isa(__PACKAGE__) ) {

        foreach my $o ( $other->iter() ) {
            my $included;
            foreach my $s ( $self->iter() ) {
                if ( $s->matches($o) ) {
                    $included = 1;
                    last;
                }
            }
            if ( !$included ) {
                return undef;
            }
        }
        return 1;
    }

    if ( $other->isa('Farly::Object') ) {
        foreach my $s ( $self->iter() ) {
            if ( $s->matches($other) ) {
                return 1;
            }
        }
    }
}

sub intersects {
    my ( $self, $other ) = @_;
    return 1 if ( $self->intersection($other)->size() >= 1 );
}

sub intersection {
    my ( $self, $other ) = @_;

    confess "Set required"
      unless $other->isa(__PACKAGE__);

    my $isect = __PACKAGE__->new();

    foreach my $s ( $self->iter() ) {
        foreach my $o ( $other->iter() ) {
            if ( $s->matches($o) ) {
                $isect->add($s);
                last;
            }
        }
    }

    return $isect;
}

sub union {
    my ( $self, $other ) = @_;

    confess "Set required"
      unless $other->isa(__PACKAGE__);

    my $union = __PACKAGE__->new();

    foreach my $s ( $self->iter() ) {
        $union->add($s);
    }

    foreach my $o ( $other->iter() ) {
        if ( !$union->includes($o) ) {
            $union->add($o);
        }
    }

    return $union;
}

sub disjoint {
    my ( $self, $other ) = @_;
    my $isect = $self->intersection($other);
    return $isect->size() == 0;
}

sub difference {
    my ( $self, $other ) = @_;

    confess "Set required"
      unless $other->isa(__PACKAGE__);

    my $diff = __PACKAGE__->new();

    foreach my $s ( $self->iter() ) {
        my $in_other;
        foreach my $o ( $other->iter() ) {
            if ( $s->matches($o) ) {
                $in_other = 1;
                last;
            }
        }
        if ( !$in_other ) {
            $diff->add($s);
        }
    }

    return $diff;
}

sub as_string {
    my ($self) = @_;

    #carp "called as_string on Set";
    my $string;
    foreach my $s ( $self->iter() ) {
        $string .= $s->as_string() . " ";
    }
    return $string;
}

1;
__END__