isa => 'Text::Tradition::Collation::Position',
predicate => 'has_position',
);
+
+has 'rank' => (
+ is => 'rw',
+ isa => 'Int',
+ predicate => 'has_rank',
+ );
+
+has 'is_lacuna' => (
+ is => 'rw',
+ isa => 'Bool',
+ );
# This contains an array of reading objects; the array is a pool,
# shared by the reading objects inside the pool. When a reading is
$self->$orig( @args );
};
+# A lacuna node is also a meta node.
+before is_lacuna => sub {
+ my( $self, $arg ) = @_;
+ if( $arg ) {
+ $self->is_meta( 1 );
+ }
+};
+
# Initialize the identity pool.
sub BUILD {
my( $self, $args ) = @_;
# Wrapper function around 'label' attribute.
my $self = shift;
if( @_ ) {
- $self->set_attribute( 'label', $_[0] );
+ if( defined $_[0] ) {
+ $self->set_attribute( 'label', $_[0] );
+ } else {
+ $self->del_attribute( 'label' );
+ }
}
return $self->label;
}
+sub witnessed_by {
+ my( $self, $sigil, $backup ) = @_;
+ my @wits = $self->witnesses;
+ return 1 if grep { $_ eq $sigil } @wits;
+ if( $backup ) {
+ return 1 if grep { $_ eq $backup } @wits;
+ }
+ return 0;
+}
+
+sub witnesses {
+ my( $self ) = @_;
+ my @paths = grep { $_->get_attribute( 'class' ) eq 'path' } $self->outgoing;
+ push( @paths, grep { $_->get_attribute( 'class' ) eq 'path' } $self->incoming );
+ my %wits;
+ foreach my $p ( @paths ) {
+ if( $p->has_hidden_witnesses ) {
+ foreach ( @{$p->hidden_witnesses} ) {
+ $wits{$_} = 1;
+ }
+ } else {
+ $wits{$p->label} = 1;
+ }
+ }
+ return keys %wits;
+}
+
sub merge_from {
my( $self, $merged_node ) = @_;
# Adopt the identity pool of the other node.
my $new_pool = _merge_array_pool( \@now_identical, $self->same_as )
if @now_identical;
- # TODO Adopt the relationship attributes of the other node.
+ # TODO Adopt the relationship attributes and segment memberships of the other node.
}
## Dealing with transposed readings. These methods are only really
return $self->position->is_colocated( @_ );
}
+# Looks from the outside like an accessor for a Boolean, but really
+# sets the node's class. Should apply to start, end, and lacunae.
+
+sub is_meta {
+ my $self = shift;
+ my $arg = shift;
+ if( defined $arg && $arg ) {
+ $self->set_attribute( 'class', 'meta' );
+ } elsif ( defined $arg ) {
+ $self->del_attribute( 'class' );
+ }
+ return $self->sub_class eq 'meta';
+}
+
# Returns all readings that adjoin this one on any path.
sub neighbor_readings {
my( $self, $direction ) = @_;
return values( %connected );
}
-sub adjust_neighbor_position {
- my $self = shift;
- return unless $self->position->fixed;
-
- # TODO This is a naive and repetitive implementation and
- # I don't like it.
- foreach my $neighbor ( $self->neighbor_readings('forward') ) {
- next unless !$neighbor->is_common &&
- $neighbor->position->common == $self->position->common;
- if( $neighbor->position->fixed &&
- $neighbor->position->min == $self->position->min ) {
- warn sprintf( "Readings %s and %s are at the same position!",
- $neighbor->name, $self->name );
- }
- next if $neighbor->position->fixed || $neighbor->position->matched;
- $neighbor->position->min( $self->position->min + 1 );
- # Recurse if necessary.
- $neighbor->adjust_neighbor_position()
- unless $neighbor->position->fixed;
- }
- foreach my $neighbor ( $self->neighbor_readings('back') ) {
- next unless !$neighbor->is_common &&
- $neighbor->position->common == $self->position->common;
- if( $neighbor->position->fixed &&
- $neighbor->position->min == $self->position->min ) {
- warn sprintf( "Readings %s and %s are at the same position!",
- $neighbor->name, $self->name );
- }
- next if $neighbor->position->fixed || $neighbor->position->matched;
- $neighbor->position->max( $self->position->max - 1 );
- # Recurse if necessary.
- $neighbor->adjust_neighbor_position()
- unless $neighbor->position->fixed;
+# Returns all readings related to the one we've got.
+sub related_readings {
+ my( $self, $colocated, $queried ) = @_;
+ $queried = { $self->name => 1 } unless $queried;
+ my @related;
+ # Get the nodes directly related to this one
+ foreach my $e ( $self->edges ) {
+ next unless $e->isa( 'Text::Tradition::Collation::Relationship' );
+ next if $colocated && $e->type eq 'repetition';
+ my $n = $e->from eq $self ? $e->to : $e->from;
+ next if $queried->{$n->name};
+ push( @related, $n );
}
- return;
-}
-
-sub match_position {
- my( $self, $other ) = @_;
- # Adjust the position of both these nodes to be as restrictive as possible.
- unless( $self->position->is_colocated( $other->position ) ) {
- warn "Cannot match positions of non-colocated readings";
- return;
+ # Now query those nodes for their relations, recursively
+ map { $queried->{$_->name} = 1 } @related;
+ my @also_related;
+ foreach ( @related ) {
+ push( @also_related, $_->related_readings( $colocated, $queried ) );
}
- my $sp = $self->position;
- my $op = $other->position;
- my $newmin = $sp->min > $op->min ? $sp->min : $op->min;
- my $newmax = $sp->max < $op->max ? $sp->max : $op->max;
- my $newpos = Text::Tradition::Collation::Position->new(
- 'common' => $sp->common,
- 'min' => $newmin,
- 'max' => $newmax,
- 'matched' => 1,
- );
- # We are setting the positions to be the same object. I don't
- # think that actually matters. We may eventually want unique
- # objects for each position.
- $self->position( $newpos );
- $other->position( $newpos );
- $self->adjust_neighbor_position();
- $other->adjust_neighbor_position();
+ push( @related, @also_related );
+ return @related;
}
## Keep track of which readings are unchanged across witnesses.
-
sub is_common {
my( $self ) = shift;
return $self->get_attribute( 'class' ) eq 'common';
}
+## TODO Rationalize make_common, is_meta, etc.
sub make_common {
my( $self ) = shift;
$self->set_attribute( 'class', 'common' );