Dynamic dead code alpha version

Hi

I continued to code a little tool based on code of Alain to detect  
deadcode, so far I'm too sick to have clear
idea why it freezes on Morph. However it works on ClockMorph and  
IconicButton.
If you want to have fun save your image before

        MCHttpRepository location: 'http://www.squeaksource.com/MetaF'
               



This package got inspired heavily by code given by Alain Plantec.
It was further improved by S. Ducasse and S. Denier who got great fun  
in designing it.

The basic principle is the following one:

        rename all methods of a class:  XXX -> NOTSENTXXX.
        but before install #doesNotUnderstand: and #recompileNotSent:,
        so that, for a not understood message named YYY, if NOTSENTYYY  
exists, then,
        NOTSENTYYY is dynamically renamed YYY and then, message is resent.
       
Deals also with superclass methods that were hidden (and could be  
accessible due to the previous strategy),
by recompiling them locally with the default behavior to recompile  
themselves into the NOTSEND associated
one when executed.

1 March 2009

Known Issues:
----------------
        - freezes when applied on Morph

Stef

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Stéphane Ducasse wrote:

 > Hi
 >
 > I continued to code a little tool based on code of Alain to detect
 > deadcode, so far I'm too sick to have clear
 > idea why it freezes on Morph.

This kinda reminds me of that moment in the horror film when you want to
yell "Don't go in there!" at the characters on the screen.

Colin

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>> I continued to code a little tool based on code of Alain to detect
>> deadcode, so far I'm too sick to have clear
>> idea why it freezes on Morph.
>
> This kinda reminds me of that moment in the horror film when you  
> want to
> yell "Don't go in there!" at the characters on the screen.

lol

Except that you should do it from within the film itself and sit down  
watching ourselves.
:)


Stef

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May be I should use reflectivity or byesurgeon for that.
But I'm curious to see until where we can go expecially since
the dnu method and automatic recompilation is in place before  
transforming
the methods.

Something else which is striking is that it is easier to redo a root  
hierarchy than
doing a root morph

ProtoObject subclass then....

doesNotUnderstand: aMessage

        | sel category |
        sel := aMessage selector.
        Transcript show: 'Does not understand ',  aMessage selector  
printString ; cr.
        category := (Morph organization categoryOfElement: sel).
        self class compile: (Morph sourceCodeAt: sel) classified: category.
        ^ aMessage sentTo: self.

works for Object but not for Morph.

Stef

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On Mar 2, 2009, at 09:06 , Stéphane Ducasse wrote:

...or use objects as methods or method wrappers. I did a quick  
experiment with the package

http://www.squeaksource.com/ObjectsAsMethodsWrap.html

from Markus Gälli. Just had to fix the send of #removeSeletorSimply:  
with #removeSelectorSilently: to make it work (@Markus, could you add  
this or give me write access?).

((PackageInfo named: 'Morphic') classes gather: [ :each |  
ObjectAsOneTimeMethodWrapper installOnClass: each ]) inspect

gets you a collection of wrapper objects which you can ask #executed.  
I opened all tools and menus in the image and got 2100 methods  
executed out of 6518.

HTH,
Adrian




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Cool

I was doing because I thought that may be I could get a problem with  
superclass method :)


doesNotUnderstand: aMessage

        | sel |
        sel := aMessage selector.
        (Morph selectors includes: sel)
                ifTrue: [^ self copyMethod: aMessage from: Morph].
        (Object selectors includes: sel)
                ifTrue: [ self copyMethod: aMessage from: Object].
        ^ aMessage sentTo: self.


copyMethod: sel from: aClass

        | category |
        Transcript show: 'Does not understand ',  sel ; cr.
        category := (aClass organization categoryOfElement: sel).
        self class compile: (aClass sourceCodeAt: sel) classified: category.
        Transcript show: 'recompiled',  sel printString ; cr.


Stef
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Now I get something somehow working with

copyMethod: sel from: aClass

        | category |
        Transcript show: 'Does not understand ',  sel asString ; cr.
        category := (aClass organization categoryOfElement: sel).
        self class compile: (aClass sourceCodeAt: sel) classified: category.
        Transcript show: 'recompiled',  sel asString ; cr.


doesNotUnderstand: aMessage

        | sel |
        sel := aMessage selector.
        (Morph selectors includes: sel)
                ifTrue: [^ self copyMethod: sel from: Morph].
        (Object selectors includes: sel)
                ifTrue: [ self copyMethod: sel from: Object].
        ^ aMessage sentTo: self.

I still would like to understand why the previous approach (alain-
based) does not work with Morph
so I will continue my little journey.

stef

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I'm realizing that the second approach (creating an empty class and  
filling it up)
does not help to really curve out functionality since sometimes you  
cannot exercise easily


On Mar 2, 2009, at 12:24 PM, Stéphane Ducasse wrote:


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I traced a bit my problem (using the approach of alain: DNU  
recompiling methods and recompiling the methods) on Morph,
what is strange is that I could install some methods but from time to  
time it blocks my image.
I have the impression that this is related to the UI event (I closed  
all windows and remov dockingsbar from the methods
that I instrument but it still freezes in a non really reproduceable  
manner.
Is there a higher priority thread refreshing everything....
I still do not understand why if the DNU reinstall the old methods,  
the system blocks.
Building hypotheses is then difficult because I have no tool to verify  
them.

Stef

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