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From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: Text_IO, was: Re: Something I don't understand
Date: Wed, 19 Feb 2014 19:03:02 +0200
Organization: Tidorum Ltd
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Xref: news.eternal-september.org comp.lang.ada:18673
Date: 2014-02-19T19:03:02+02:00
List-Id: <comp.lang.ada>

On 14-02-19 17:06 , Robert A Duff wrote:
> Niklas Holsti <niklas.holsti@tidorum.invalid> writes:
> 
>> My notion of type "Text" is an internal representation of text meant for
>> human reading and viewing. I don't see any logical need for making this
>> type a class; there would be only one predefined (and private) type.
> 
> How is your notion of Text different from (say) HTML?

Because "Text" is an internal form with a hidden implementation.

> Or an internal tree-ish representation of HTML?

More or less. Think "abstract syntax tree" instead of "concrete language
sentence". Or "Document Object Model".

> Anyway, I'd say your notion of Text has nothing to do with Text_IO,
> which is about plain unformatted text.  Originally 7-bit ASCII.

Yes, Text_IO is about plain unformatted text, except for "typewriter
formatting" with column, line, and page controls.

The discussion was about how to improve the text (output) facilities of
Ada. The abstract "Text" structure is one suggestion. But it should
perhaps be called something else, to avoid confusing Ada.Text_IO with
Ada.Text.IO :-) Anyway, I'm not suggesting "Text" input, only "Text" output.

-- 
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
      .      @       .