use DX::Step::Backtrack;
use Types::Standard qw(ArrayRef);
-use DX::Utils qw(deparse);
+use DX::Utils qw(deparse step);
use DX::Class;
with 'DX::Role::Step';
-has actions => (is => 'ro', isa => ArrayRef[Action], required => 1);
-
-has depends_on => (is => 'ro', isa => DependencyGroupList, required => 1);
-
has resolves => (is => 'ro', isa => Proposition);
-has alternative_step => (is => 'ro', isa => Step);
+has resolution_space => (is => 'ro', isa => ResolutionSpace);
+
+has current_resolution => (is => 'lazy', init_arg => undef, builder => sub {
+ my ($self) = @_;
+ $self->resolution_space->next_resolution;
+});
+
+has actions => (is => 'lazy', init_arg => undef, builder => sub {
+ my ($self) = @_;
+ $self->current_resolution->actions;
+});
+
+has depends_on => (is => 'lazy', init_arg => undef, builder => sub {
+ my ($self) = @_;
+ my $_expand_dep = sub {
+ my ($type, @path) = @{$_[0]};
+ my @expanded = map {
+ ref() ? @{$_->value_path or return ()} : $_
+ } @path;
+ return [ $type, @expanded ];
+ };
+ [ map $_expand_dep->($_),
+ @{$self->current_resolution->veracity_depends_on} ];
+});
+
+has alternative_step => (is => 'lazy', init_arg => undef, builder => sub {
+ my ($self) = @_;
+ my $rspace = $self->resolution_space->remaining_resolution_space;
+ return undef unless @{$rspace->members};
+ return step(
+ resolves => $self->resolves,
+ resolution_space => $rspace
+ );
+});
sub but_first {
my ($self, @actions) = @_;
$old_ss->on_solution_step
}
};
- my $alt_step = $self->alternative_step;
my $ss = $old_ss->but(
next_step => $ns,
- ($alt_step
- ? (alternatives => [
- [ $old_ss->current_hypothesis, $alt_step ],
- @{$old_ss->alternatives}
+ (@{$self->actions}
+ ? (adjustments_made => [
+ [ $self, $old_ss ],
+ @{$old_ss->adjustments_made}
])
: ()
),