> On 15 Aug 2015, at 19:44, Cyril Ferlicot <[email protected]> wrote:
>
> Can you give a little example of usecase to illustrate how this will be
> useful please? :)
>
The reason why I do that now is that I want to be able to put Meta Links on
these variables.
This means, to “hook” into all accesses of x in Point, I want to be able to do:
metaLink := MetaLink new
metaObject: Counter;
selector: #inc.
(Point slotNamed: #x) link: metaLink.
==> on next call, any method that references the ivar x will be re-compiled
just before execution with
the Link taken into account. Which means it will insert “Counter inc” before
the access.
This works, too, on Globals. E.g. you want to #halt next time someone reads the
global reference Object?
Just do
Object binding link: (MetaLink new metaObject: Halt; selector: #now)
Lots of possibilities… and even for the raw properties I am sure people can
find uses. E.g. the Quality assist
system actually annotates methods using properties instead of having internal
private data structures. It could
attach information to *Variables*, too. Maybe other uses are possible, too.
Could one store what we statically
know about the classes possible of a variable?
Marcus
