X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FMoose%2FMeta%2FTypeCoercion.pm;h=aaae01356ef4b3472c37756f35fde8497e400811;hb=849811463e6a7531a72f545a9a78902724b4085e;hp=2f7cfde64b779a9d6bdafe455ac1429ceff1d9dd;hpb=b77fdbed20f583feab7a3990da4ebc04898217fc;p=gitmo%2FMoose.git

diff --git a/lib/Moose/Meta/TypeCoercion.pm b/lib/Moose/Meta/TypeCoercion.pm
index 2f7cfde..aaae013 100644
--- a/lib/Moose/Meta/TypeCoercion.pm
+++ b/lib/Moose/Meta/TypeCoercion.pm
@@ -10,12 +10,14 @@ use Carp 'confess';
 use Moose::Meta::Attribute;
 use Moose::Util::TypeConstraints ();
 
-our $VERSION = '0.02';
+our $VERSION   = '0.06';
+our $AUTHORITY = 'cpan:STEVAN';
 
 __PACKAGE__->meta->add_attribute('type_coercion_map' => (
     reader  => 'type_coercion_map',
     default => sub { [] }
 ));
+
 __PACKAGE__->meta->add_attribute(
     Moose::Meta::Attribute->new('type_constraint' => (
         reader   => 'type_constraint',
@@ -31,7 +33,7 @@ __PACKAGE__->meta->add_attribute('compiled_type_coercion' => (
 sub new { 
     my $class = shift;
     my $self  = $class->meta->new_object(@_);
-    $self->compile_type_coercion();
+    $self->compile_type_coercion;
     return $self;
 }
 
@@ -41,7 +43,7 @@ sub compile_type_coercion {
     my @coercions;
     while (@coercion_map) {
         my ($constraint_name, $action) = splice(@coercion_map, 0, 2);
-        my $type_constraint = Moose::Util::TypeConstraints::find_type_constraint($constraint_name);
+        my $type_constraint = Moose::Util::TypeConstraints::find_or_create_type_constraint($constraint_name);
         (defined $type_constraint)
             || confess "Could not find the type constraint ($constraint_name) to coerce from";
         push @coercions => [ 
@@ -53,8 +55,8 @@ sub compile_type_coercion {
         my $thing = shift;
         foreach my $coercion (@coercions) {
             my ($constraint, $converter) = @$coercion;
-            if (defined $constraint->($thing)) {
-			    local $_ = $thing;                
+            if ($constraint->($thing)) {
+                local $_ = $thing;                
                 return $converter->($thing);
             }
         }
@@ -62,6 +64,31 @@ sub compile_type_coercion {
     });    
 }
 
+sub has_coercion_for_type {
+    my ($self, $type_name) = @_;
+    my %coercion_map = @{$self->type_coercion_map};
+    exists $coercion_map{$type_name} ? 1 : 0;
+}
+
+sub add_type_coercions {
+    my ($self, @new_coercion_map) = @_;
+        
+    my $coercion_map = $self->type_coercion_map;    
+    my %has_coercion = @$coercion_map;
+    
+    while (@new_coercion_map) {
+        my ($constraint_name, $action) = splice(@new_coercion_map, 0, 2);        
+        
+        confess "A coercion action already exists for '$constraint_name'"
+            if exists $has_coercion{$constraint_name};
+        
+        push @{$coercion_map} => ($constraint_name, $action);
+    }
+    
+    # and re-compile ...
+    $self->compile_type_coercion;
+}
+
 sub coerce { $_[0]->_compiled_type_coercion->($_[1]) }
 
 
@@ -102,6 +129,10 @@ If you wish to use features at this depth, please come to the
 
 =item B<type_constraint>
 
+=item B<has_coercion_for_type>
+
+=item B<add_type_coercions>
+
 =back
 
 =head1 BUGS
@@ -116,11 +147,11 @@ Stevan Little E<lt>stevan@iinteractive.comE<gt>
 
 =head1 COPYRIGHT AND LICENSE
 
-Copyright 2006, 2007 by Infinity Interactive, Inc.
+Copyright 2006-2008 by Infinity Interactive, Inc.
 
 L<http://www.iinteractive.com>
 
 This library is free software; you can redistribute it and/or modify
 it under the same terms as Perl itself. 
 
-=cut
\ No newline at end of file
+=cut