File Coverage

blib/lib/Graph/Matrix.pm

Criterion	Covered	Total	%
statement	29	29	100.0
branch	2	2	100.0
condition			n/a
subroutine	6	6	100.0
pod	4	4	100.0
total	41	41	100.0

package Graph::Matrix;

# $SIG{__DIE__ } = \&Graph::__carp_confess;
# $SIG{__WARN__} = \&Graph::__carp_confess;

use strict;
use warnings;

sub new {
    my ($class, $g) = @_;
    my @V = $g->vertices;
    my $V = @V;
    my %V; @V{ @V } = 0 .. $#V;
    bless [ [ map [], 0 .. $#V ], \%V ], $class;
}

sub set {
    my ($m, $u, $v, $val) = @_;
    my ($i, $j) = map $m->[1]->{ $_ }, ($u, $v);
    $m->[0]->[$i]->[$j] = $val;
}

sub get {
    my ($m, $u, $v) = @_;
    my ($i, $j) = map $m->[1]->{ $_ }, ($u, $v);
    $m->[0]->[$i]->[$j];
}

sub stringify {
    my ($m) = @_;
    my @V = sort keys %{ $m->[1] };
    my $top = join ' ', map sprintf('%4s', $_), 'to:', @V;
    my @indices = map $m->[1]{$_}, @V;
    my @rows;
    for my $n (@V) {
        my $this_row = $m->[0][ $m->[1]->{$n} ];
        my @vals = map $this_row->[ $_ ], @indices;
        push @rows, join ' ', map sprintf('%4s', defined()?$_:''), $n, @vals;
    }
    join '', map "$_\n", $top, @rows;
}

1;
__END__