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Macro Expansion and Smalltalk

September 20, 2011 14:11:42.000

Travis has been working on a few ideas to change this sort of code:

<1s> ^self <2s> <3s>'     
	expandMacrosWith: aVariableName     
	with: aBasicAccessingMethod     
	with: sizeof + 1

To something more like this:

<1s>At: anOffset     
	^self <2s> anOffset * <3p> + <4p>'     
		_1: aVariableName     
		_2: aBasicAccessingMethod     
		_3: aByteSize    
		 _4: sizeof + 1

I see what he's trying to do, and you should read his explanation. I do have some nervousness about how it will be used in application code though. This is the sort of thing that's highly useful in tooling, but often quite scay in application code....

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posted by James Robertson


Re: Macro Expansion and Smalltalk

[Travis Griggs] September 21, 2011 12:48:47.236

So you'd rather see something like

Dialog warn: ('Remember that <1s> is <2s>''s <3s> (<4p>)'

expandMacrosWithArguments: (Array

with: todayOrTomorrowLabel

with: personName

with: specialDayName

with: date))

instead of

Dialog warn: ('Remember that <1s> is <2s>''s <3s> (<4p>)'

_1: todayOrTomorrowLabel

_2: personName

_3: specialDayName

_4: date)


Re: Macro Expansion and Smalltalk

[Travis Griggs] September 21, 2011 12:49:25.386

sigh, that definitely lost something with the formatting being blown away :(

Re: Macro Expansion and Smalltalk

[James Robertson] September 21, 2011 15:06:03.681

Unfortunately, you need to use the escape all brackets...

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