On 05-04-2012 22:06, Jacob Carlborg wrote:
On 2012-04-05 19:35, Walter Bright wrote:
On 4/5/2012 5:00 AM, Manu wrote:
C# and Java both have attributes, following these established design
patterns, I
don't think there should be any mystery over how they should be
implemented.
At the Lang.NEXT conference over the last 3 days, I was able to talk to
many smart people about attributes. But I did find some confusion - are
they best attached to the variable/function (i.e. "storage class"), or
attached to the type ("type constructor")? I think the former. Attaching
it to the type leads to all sorts of semantic issues.
From your list of uses, it looks like attaching it to the variable or
function is an apropos solution.
If I recall correctly, both Java annotations and C# attributes let you
specify with a fine grained control on what the attributes are attached to.
@foo FooBar bar () {}
For example, is "@foo" attached to "FooBar" or "bar". Java uses the
@Target annotation to specify this.
C#'s grammar directly encodes what metadata element the attribute is
attached to. How feasible this is with D's rather... loose
attribute/modifier parsing, I don't know.
--
- Alex
