lib/DX/Step/EnterRecheck.pm

   1 package DX::Step::EnterRecheck;
   2
   3 use DX::Step::CompleteRecheck;
   4
   5 use DX::Class;
   6
   7 with 'DX::Role::Step';
   8
   9 has proposition_list => (is => 'ro', required => 1);
  10
  11 has on_completion_step => (is => 'ro', required => 1);
  12
  13 sub apply_to {
  14   my ($self, $old_ss) = @_;
  15
  16   my ($prop, @rest) = @{$self->proposition_list};
  17
  18   die "NOT YET DAMNIT" if @rest;
  19
  20   my $old_hyp = $old_ss->current_hypothesis;
  21
  22   # we should probably be doing something about pruning the scope
  23   # but that's completely pointless until we have rules (and also,
  24   # the lock_to_depth arg needs to come from the proposition somehow)
  25
  26   my $ap = DX::ActionPolicy::LockScope->new(
  27     lock_to_depth => $old_hyp->scope->depth,
  28     next_policy => $old_hyp->action_policy,
  29   );
  30
  31   my $hyp = ref($old_hyp)->new(
  32     scope => $old_hyp->scope,
  33     resolved_propositions => DX::ResolvedPropositionSet->new_empty,
  34     actions => [],
  35     action_applications => [],
  36     action_policy => $ap,
  37   );
  38
  39   my $pseq = DX::PropositionSequence->new(
  40     members => [ $prop ],
  41     external_names => {},
  42     internal_names => {},
  43   );
  44
  45   trace 'step.recheck.hyp' => $hyp;
  46
  47   my $ss = DX::SearchState->new(
  48     current_hypothesis => $hyp,
  49     alternatives => [],
  50     propositions => $pseq,
  51     next_step => DX::Step::ConsiderProposition->new(
  52                    proposition => $prop,
  53                  ),
  54     is_solution_state => 0,
  55     on_exhaustion_step => undef,
  56     on_solution_step => DX::Step::CompleteRecheck->new(
  57       resume_search_state => $old_ss->but(
  58         next_step => $self->on_completion_step
  59       ),
  60       was_recheck_for => $prop,
  61     ),
  62   );
  63
  64   return $ss;
  65 }
  66
  67 1;