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[scpubgit/DKit.git] / lib / DX / State.pm

diff --git a/lib/DX/State.pm b/lib/DX/State.pm
index 7ec2e1b..b4ad233 100644 (file)
--- a/lib/DX/State.pm
+++ b/lib/DX/State.pm
@@ -2,6 +2,7 @@ package DX::State;
 
 use Return::MultiLevel qw(with_return);
 use DX::Op::FromCode;
+use Scalar::Util qw(blessed);
 use Moo;
 
 has next_op => (is => 'ro', required => 1);
@@ -14,11 +15,35 @@ has scope => (is => 'ro', required => 1);
 
 has last_choice => (is => 'ro', required => 1);
 
+has id_gen => (is => 'ro', default => sub { {} });
+
 sub scope_var {
   my ($self, $name) = @_;
   $self->by_id->{$self->scope->{$name}};
 }
 
+sub allocate_var {
+  my ($self, $name, $var) = @_;
+  my $id = join('_', $name, ++($self->id_gen->{$name}));
+  DX::Var->new(id => $id, %$var);
+}
+
+sub assign_vars {
+  my ($self, %vars) = @_;
+  my %by_id = %{$self->by_id};
+  foreach my $name (keys %vars) {
+warn "assign: ${name}";
+    unless (blessed($vars{$name})) {
+      my $var = $vars{$name} = $self->allocate_var($name, $vars{$name});
+      $by_id{$var->id} = $var;
+    }
+  }
+  $self->but(
+    by_id => \%by_id,
+    scope => { %{$self->scope}, map +($_ => $vars{$_}->id), keys %vars }
+  );
+}
+
 sub bind_var_then {
   my ($self, $var, $value, $then) = @_;
   warn "Binding ".$var->id." to $value";
@@ -70,6 +95,7 @@ sub run {
     my ($return) = @_;
     local our $Nonlocal_Return = $return;
     while (my $op = $state->next_op) {
+#::Dwarn($op);
       $state = $op->run($state);
     }
     return $state;