Matt Trout put out a new version of Devel::Declare with greatly expanded parser twisting capabilities. I stole his implementation of methods for Method::Signatures and pushed out a new version. Now you can write this:
package Foo;
method bar($baz, $biff) {
$self->whatever($baz, $biff);
}
No source filters. No performance loss. [1] Just a terrifying toke.c hack.
Uhh, just don't run it in the debugger. Or as a one-liner. Or near small children. Do not operate near open flame. It's probably not all that bad.
Eliminating the trailing semi-colon was the last major hurdle. Now I'm clear to improve the prototype.
[1] This is not strictly true. There's a 2% performance drop for an empty method call. This is measuring an odd difference between *foo = sub { ... } and sub foo { ... }.
