[squeak-dev] using reflections in squeak

Dvir Faivel sdvirf at t2.technion.ac.il
Mon Apr 29 20:03:19 UTC 2013


T
hanks Bob! the example helped a lot.

Tim, i want to change the behavior of some methods (at runtime, based on
the user's decision).
for example, if a method of class A contains the comment:
"hello, this is a comment"
than if B inherits from A, this method wouldn't be inherited (an attempt
to call this method from an object of type B would cause an exception to be
thrown).
the reason i'm using a comment is that it doesn't affect the code.

is there a simple way to add a code to a method?
for example, to add "this is a comment" to the end of the code?


On Mon, Apr 29, 2013 at 2:46 AM, tim Rowledge <tim at rowledge.org> wrote:

>
> On 28-04-2013, at 1:55 PM, Dvir Faivel <sdvirf at t2.technion.ac.il> wrote:
>
> > hi there,
> > i have a question about squeak object model.
> >
> > how can i check whether a method contains a certain piece of code?
>
> You'll get better advice if you expand upon what you want & why; what is
> the real problem you are trying to solve here?
>
> If, for example you're simply wanting to programatically find all senders
> of a particular message then the code is already there -
> take a look at SystemNavigation>allCallsOn:fromBehaviors:sorted: to see
> how to scan all the methods implemented by a list of behaviours (ie classes
> or metaclasses) for sends of a particular message, including ones that are
> special cases.
> If you already know which class and method you want to look at then
> examine Behavior>whichSelectorsReferTo:specialByte:thorough: to see how the
> system does it.
>
> Or are you wanting to look for particular fragments of code with some sort
> of text based pattern matching? Or…?
>
>
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
> ASCII to  ASCII, DOS to DOS.
>
>
>
>
>
>
>
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