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From: Warren <ve3wwg@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Dynamic Variant Record Creation
Date: Wed, 17 Mar 2010 16:30:26 +0000 (UTC)
Organization: A noiseless patient Spider
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Robert A Duff expounded in news:wcchbof2ec4.fsf@shell01.TheWorld.com:

> Charmed Snark <snark@cogeco.ca> writes:
> 
>> Robert A Duff expounded in news:wcceijk0vze.fsf@shell01.TheWorld.com:
>>> But I don't think it does what you want!  The 'Pos of the
>>> Character '!' is not the same as the 'Pos of the Token '!'.
>>
>> Oh yes it does, hee hee. My awk script goes to great lengths 
>> to define the Token_Type to align with the characters (it 
>> generates the type specification from #defines, sorted and 
>> munged from the yacc output y.tab.h). I did alude to this 
>> in the first post as a FYI, that it has a for Token_Type 
>> use (...) statement to ensure this.
> 
> But "for Token_Type use (...)" has no effect on the 'Pos/'Val
> attributes.  It sets the internal representations, not the
> position numbers.
> 
> - Bob

True, but Character'Pos(NUL) is still zero etc. I could get
into trouble though if I were to skip (in Token_Type) any
ranges of [printable] characters, but this is not the case. 
After the last non-printable character, this is unimportant
because I don't apply those.  

Up until the first printable character, I fill in values, 
where I don't have actual token values. Values like LEX_009 
for example. So it does work in this particular case.

Warren