assert_valid to use constraints for assertion

[gitmo/Moose.git] / lib / Moose / Meta / TypeConstraint.pm

diff --git a/lib/Moose/Meta/TypeConstraint.pm b/lib/Moose/Meta/TypeConstraint.pm
index 3ab7a1e..298656f 100644 (file)
--- a/lib/Moose/Meta/TypeConstraint.pm
+++ b/lib/Moose/Meta/TypeConstraint.pm
@@ -104,6 +104,16 @@ sub validate {
     }
 }
 
+sub assert_valid {
+    my ($self, $value) = @_;
+
+    my $error = $self->validate($value);
+    return 1 if ! defined $error;
+
+    require Moose;
+    Moose->throw_error($error);
+}
+
 sub get_message {
     my ($self, $value) = @_;
     if (my $msg = $self->message) {