package DX::SearchState;
-use Types::Standard qw(Maybe);
+use Types::Standard qw(Maybe Bool);
use DX::Step::Backtrack;
use DX::Step::ConsiderProposition;
use DX::Step::MarkAsSolution;
has adjustments_made => (is => 'ro', isa => AdjustmentList, required => 1);
-has is_solution_state => (is => 'ro', required => 1);
+has is_solution_state => (is => 'ro', isa => Bool, required => 1);
has on_exhaustion_step => (is => 'ro', isa => Maybe[Step], required => 1);
sub with_one_step {
my ($self) = @_;
return undef unless my $step = $self->next_step;
- trace step => $step;
+ #trace step => $step;
return $step->apply_to($self);
}
sub force_backtrack {
my ($self) = @_;
- my ($first_alt, @rest_alt) = @{$self->adjustments_made};
- return undef unless $first_alt;
return $self->but(
next_step => DX::Step::Backtrack->new,
)->with_one_step;