rspace tracing

[scpubgit/DX.git] / lib / DX / Role / Predicate.pm

diff --git a/lib/DX/Role/Predicate.pm b/lib/DX/Role/Predicate.pm
index 28cb8a1..e4e83ba 100644 (file)
--- a/lib/DX/Role/Predicate.pm
+++ b/lib/DX/Role/Predicate.pm
@@ -1,24 +1,14 @@
 package DX::Role::Predicate;
 
-use List::Util qw(reduce);
-use DX::Utils qw(step CONTENTS_OF);
+use Object::Tap;
 use DX::Role;
 
 sub resolution_step_for {
   my ($self, $prop, @args) = @_;
-  my ($last, @rest) = reverse $self->_possible_resolution_list(@args);
-  return undef unless $last;
-  my $targ = $last->but(resolves => $prop);
-  $targ = $_->but(
-    alternative_step => $targ,
-    resolves => $prop
-  ) for @rest;
-  return $targ;
-}
-
-sub selection_depends_on {
-  my ($self, @args) = @_;
-  \@args;
+  $self->_resolution_space_for(@args)
+       ->but(proposition => $prop)
+       ->$_tap(sub { trace rspace => $_[0] })
+       ->next_step;
 }
 
 1;