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|
# Graph an object structure using GraphViz.
use Class::Prototyped;
use GraphViz;
use IO::File;
package Class::Prototyped::Mirror;
my %graphOpts = (
R => 1, # H or V orientation
i => 'png', # output format
u => 0, # output image map?
s => 1, # what kind of image map?
);
sub graphOptions {
shift if ref( $_[0] );
%graphOpts = ( %graphOpts, @_ );
}
# look familiar?
sub visitAllParents {
my $mirror = shift;
my $sub = shift;
my $userData = shift;
my $stack = shift || [];
my $seen = shift || {};
push ( @$stack, $mirror );
$sub->( $parentMirror, $userData, $stack );
foreach my $parent ( $mirror->parents ) {
next unless UNIVERSAL::can( $parent, 'reflect' );
my $parentMirror = $parent->reflect;
$parentMirror->visitAllParents( $sub, $userData, $stack, $seen );
}
pop (@$stack);
}
sub _graphOneObject {
my $mirror = shift;
my $data = shift;
my $g = $data->[0];
my $slotName = $data->[1];
my $stack = shift;
my $name = $stack->[-1]->getSlot($slotName);
$g->add_node($name);
my $fromName;
if ( @$stack >= 2 ) {
$fromName = $stack->[-2]->getSlot($slotName);
$g->add_edge( $fromName, $name );
}
}
sub graph {
shift if UNIVERSAL::isa( $_[0], 'Class::Prototyped::Mirror' );
my $slotName = shift;
my $outfile = 'graph.png';
my $g = GraphViz->new( rankdir => $graphOpts{R} || 0 );
foreach my $obj (@_) {
my $mirror = $obj->reflect;
$mirror->visitAllParents( \&_graphOneObject, [ $g, $slotName ] );
}
my $output = IO::File->new( $outfile, 'w' )
or die "can't open $outfile: $!\n";
$output->print( eval "\$g->as_$graphOpts{i}()" );
$output->close();
if ( $graphOpts{u} ) {
STDOUT->print( exists( $graphOpts{s} ) ? $g->as_imap : $g->as_ismap() );
}
}
1;
|
