X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMooseX%2FDependent%2FMeta%2FTypeCoercion%2FDependent.pm;h=564026721209c8e1364da4e6a4eb56f249d23ce5;hb=26cf337eb5c6275eddbcda39f7187416d6314b2f;hp=a2b718d8d564e1d3c95522ff48fe8f54c0573692;hpb=21df4517825e6c4bc201683264ecf7a3b8e25230;p=gitmo%2FMooseX-Dependent.git

diff --git a/lib/MooseX/Dependent/Meta/TypeCoercion/Dependent.pm b/lib/MooseX/Dependent/Meta/TypeCoercion/Dependent.pm
index a2b718d..5640267 100644
--- a/lib/MooseX/Dependent/Meta/TypeCoercion/Dependent.pm
+++ b/lib/MooseX/Dependent/Meta/TypeCoercion/Dependent.pm
@@ -16,6 +16,59 @@ TBD
 
 This class defines the following methods.
 
+=head
+
+=cut
+
+sub coerce {
+    my $self = shift @_;
+    my $coderef = $self->_compiled_type_coercion;
+    return $coderef->(@_);
+}
+
+around 'add_type_coercions' => sub {
+    my ($add_type_coercions, $self, @args) = @_;
+    if($self->type_constraint->has_constraining_value) {
+        Moose->throw_error("Cannot add type coercions to a dependent type constraint that's been defined.");
+    } else {
+        return $self->$add_type_coercions(@args);
+    }
+};
+
+sub compile_type_coercion {
+    my $self = shift;
+    my @coercion_map = @{$self->type_coercion_map};
+    my @coercions;
+    while (@coercion_map) {
+        my ($constraint_name, $action) = splice(@coercion_map, 0, 2);
+        my $type_constraint = ref $constraint_name ? $constraint_name : Moose::Util::TypeConstraints::find_or_parse_type_constraint($constraint_name);
+
+        unless ( defined $type_constraint ) {
+            require Moose;
+            Moose->throw_error("Could not find the type constraint ($constraint_name) to coerce from");
+        }
+
+        push @coercions => [
+            $type_constraint->_compiled_type_constraint,
+            $action
+        ];
+    }
+    $self->_compiled_type_coercion(sub {
+        my $thing = shift;
+        foreach my $coercion (@coercions) {
+            my ($constraint, $converter) = @$coercion;
+            if ($constraint->($thing)) {
+                local $_ = $thing;
+                return $converter->($thing, @_);
+            }
+        }
+        return $thing;
+    });
+}
+
+
+
+
 =head1 SEE ALSO
 
 The following modules or resources may be of interest.