add types to Proposition and PropositionSequence

[scpubgit/DX.git] / lib / DX / SearchState.pm

diff --git a/lib/DX/SearchState.pm b/lib/DX/SearchState.pm
index 1742ff5..0a306c9 100644 (file)
--- a/lib/DX/SearchState.pm
+++ b/lib/DX/SearchState.pm
@@ -12,7 +12,7 @@ has next_step => (is => 'ro', isa => Maybe[Step], required => 1);
 
 has propositions => (is => 'ro', isa => PropositionSequence, required => 1);
 
-has alternatives => (is => 'ro', isa => AlternativeList, required => 1);
+has adjustments_made => (is => 'ro', isa => AdjustmentList, required => 1);
 
 has is_solution_state => (is => 'ro', required => 1);
 
@@ -32,7 +32,7 @@ sub new_for {
   my ($class, $hyp, $props) = @_;
   $class->new(
     current_hypothesis => $hyp,
-    alternatives => [],
+    adjustments_made => [],
     propositions => $props,
     (@{$props->members}
       ? (
@@ -57,8 +57,6 @@ sub with_one_step {
 
 sub force_backtrack {
   my ($self) = @_;
-  my ($first_alt, @rest_alt) = @{$self->alternatives};
-  return undef unless $first_alt;
   return $self->but(
     next_step => DX::Step::Backtrack->new,
   )->with_one_step;