Author: lwall
Date: 2009-05-09 03:19:04 +0200 (Sat, 09 May 2009)
New Revision: 26735
Modified:
docs/Perl6/Spec/S14-roles-and-parametric-types.pod
Log:
[S14] note (again) that macro syntax must be lexically scoped
Modified: docs/Perl6/Spec/S14-roles-and-parametric-types.pod
===================================================================
--- docs/Perl6/Spec/S14-roles-and-parametric-types.pod 2009-05-09 01:11:19 UTC
(rev 26734)
+++ docs/Perl6/Spec/S14-roles-and-parametric-types.pod 2009-05-09 01:19:04 UTC
(rev 26735)
@@ -11,8 +11,8 @@
Contributions: Tim Nelson <wayl...@wayland.id.au>
Jonathan Worthington <jn...@jnthn.net>
Date: 24 Feb 2009, extracted from S12-objects.pod
- Last Modified: 3 May 2009
- Version: 5
+ Last Modified: 8 May 2009
+ Version: 6
=head1 Overview
@@ -413,6 +413,13 @@
do any extra shenanigans. The compiler won't call it for you at run
time like it would at compile time.
+Note that the declarations above are insufficient to install new trait
+auxilliaries or verbs into the user's grammar, since macro definitions
+are lexically scoped, and in the declarations above extend only to
+the end of the role definition. The user's lexical scope must somehow
+have processed (or imported) a proto declaration introducing the new
+syntax before it can be parsed correctly. (This doesn't apply to
+pre-existing syntax such as C<is>, of course.)
=head1 Parametric Roles
