pervasive type constraints

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

diff --git a/lib/DX/QueryState.pm b/lib/DX/QueryState.pm
index b15ac83..b378783 100644 (file)
--- a/lib/DX/QueryState.pm
+++ b/lib/DX/QueryState.pm
@@ -1,9 +1,8 @@
 package DX::QueryState;
 
-use Types::Standard qw(HashRef);
 use DX::Scope;
 use DX::Hypothesis;
-use DX::SearchState;
+use DX::SearchProcess;
 use DX::ResolvedPropositionSet;
 use DX::Value::Unset;
 use DX::ActionBuilder::UnsetValue;
@@ -35,26 +34,25 @@ sub new_search_state_for {
     locals => [
       dict(
         map +($_ => DX::Value::Unset->new(
-                      identity_path => [ 0, $_ ],
                       action_builder => DX::ActionBuilder::UnsetValue->new(
                         target_path => [ 0, $_ ],
                       )
                     )
         ), @local_names
       )
-    ]
+    ],
+    lex_map => {
+      map +($_ => [ 0, $_ ]), @local_names
+    }
   );
   my $hyp = DX::Hypothesis->new(
     scope => $scope,
     resolved_propositions => DX::ResolvedPropositionSet->new_empty,
-    outstanding_propositions => $prop_seq->members,
     actions => [],
+    action_applications => [],
     action_policy => DX::ActionPolicy::Allow->new,
   );
-  return DX::SearchState->new(
-    current_hypothesis => $hyp,
-    alternatives => [],
-  );
+  return DX::SearchProcess->new_for($hyp, $prop_seq);
 }
 
 sub with_additional_proposition {
@@ -63,11 +61,18 @@ sub with_additional_proposition {
                       ->with_additional_proposition($prop);
   my $sol_ss = $self->new_search_state_for($prop_seq)
                     ->find_solution;
-  die "No solution" unless $sol_ss;
+  die "No solution\n" unless $sol_ss;
   $self->but(
     proposition_sequence => $prop_seq,
     search_state => $sol_ss,
   );
 }
 
+sub with_forced_backtrack {
+  my ($self) = @_;
+  my $next_ss = $self->search_state->find_next_solution;
+  die "No next solution\n" unless $next_ss;
+  $self->but(search_state => $next_ss);
+}
+
 1;