From: Matt S Trout <mst@shadowcat.co.uk>
Date: Fri, 30 Mar 2018 18:29:55 +0000 (+0000)
Subject: switchover to rspace next_step and dump step()
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=scpubgit%2FDX.git;a=commitdiff_plain;h=29daa5541fda849f06b7bf5ecd2d4a72f263b184

switchover to rspace next_step and dump step()
---

diff --git a/lib/DX/Predicate/Eq.pm b/lib/DX/Predicate/Eq.pm
index a7ca607..e21be8c 100644
--- a/lib/DX/Predicate/Eq.pm
+++ b/lib/DX/Predicate/Eq.pm
@@ -1,6 +1,6 @@
 package DX::Predicate::Eq;
 
-use DX::Utils qw(step rspace res CONTENTS_OF);
+use DX::Utils qw(rspace res CONTENTS_OF);
 use DX::Class;
 
 with 'DX::Role::Predicate';
diff --git a/lib/DX/ResolutionSpace.pm b/lib/DX/ResolutionSpace.pm
index c2bfff6..817595f 100644
--- a/lib/DX/ResolutionSpace.pm
+++ b/lib/DX/ResolutionSpace.pm
@@ -1,7 +1,7 @@
 package DX::ResolutionSpace;
 
-use DX::Utils qw(step);
 use DX::Step::Backtrack;
+use DX::Step::ResolveProposition;
 use DX::Class;
 
 has proposition => (is => 'ro');
@@ -25,10 +25,7 @@ sub remaining_resolution_space {
 sub next_step {
   my ($self) = @_;
   return DX::Step::Backtrack->new unless @{$self->members};
-  return step(
-    resolves => $self->proposition,
-    resolution_space => $self,
-  );
+  return DX::Step::ResolveProposition->new(resolution_space => $self);
 }
 
 1;
diff --git a/lib/DX/Role/Predicate.pm b/lib/DX/Role/Predicate.pm
index 0612168..a8e86a6 100644
--- a/lib/DX/Role/Predicate.pm
+++ b/lib/DX/Role/Predicate.pm
@@ -1,7 +1,5 @@
 package DX::Role::Predicate;
 
-use List::Util qw(reduce);
-use DX::Utils qw(step CONTENTS_OF);
 use DX::Role;
 
 sub resolution_step_for {
diff --git a/lib/DX/Step/ResolveProposition.pm b/lib/DX/Step/ResolveProposition.pm
index 1b4cd26..3416c27 100644
--- a/lib/DX/Step/ResolveProposition.pm
+++ b/lib/DX/Step/ResolveProposition.pm
@@ -4,13 +4,15 @@ use DX::Step::EnterRecheck;
 use DX::Step::Backtrack;
 
 use Types::Standard qw(ArrayRef);
-use DX::Utils qw(deparse step);
 
 use DX::Class;
 
 with 'DX::Role::Step';
 
-has resolves => (is => 'ro', isa => Proposition);
+has resolves => (is => 'lazy', init_arg => undef, builder => sub {
+  my ($self) = @_;
+  $self->resolution_space->proposition;
+});
 
 has resolution_space => (is => 'ro', isa => ResolutionSpace);
 
@@ -41,10 +43,7 @@ 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
-  );
+  return $rspace->next_step;
 });
 
 sub but_first {
diff --git a/lib/DX/Utils.pm b/lib/DX/Utils.pm
index efdc259..0391df3 100644
--- a/lib/DX/Utils.pm
+++ b/lib/DX/Utils.pm
@@ -10,7 +10,7 @@ my @const = (
 
 our @EXPORT_OK = (
   @const,
-  (my @builders = qw(step rspace rstrat res string number dict proposition)),
+  (my @builders = qw(rspace rstrat res string number dict proposition)),
   'deparse', '*trace',
 );
 
@@ -56,15 +56,6 @@ sub _expand_deps {
   [ map _expand_dep($_), @{$_[0]} ]
 }
 
-sub step {
-  require DX::Step::ResolveProposition;
-  my %args = @_;
-  DX::Step::ResolveProposition->new(
-    %args,
-    depends_on => _expand_deps($args{depends_on}),
-  );
-}
-
 sub rspace {
   require DX::ResolutionSpace;
   DX::ResolutionSpace->new(@_);