[Oberon] Texts.Reader question

[Treutwein Bernhard]

Hi Sascha,

>   What happens if I open a Reader on a Text, read some data, then
>   modify the Text (e.g. by deleting a piece of text containing the
>   Reader's current position), and then read on without reopening the
>   Reader? Will the Reader operate on the modified version of the Text,
>   or on the version as it was at the time of OpenReader call, or is

as far as I know, you get back the modified version, but don't take my
knowledge as granted ...

>   In what document can I
>   find this aspect described? I tried reading the "Project Oberon"
>   book, but I didn't find any mentions of this situation. 

you should find it in Martin Reiser's Oberon System.

regards
--
  Bernhard Treutwein
  Ludwig-Maximilians-Universität
  Ref. IIIA3 Anwendungsentwicklung
  Martiusstr. 4
  80802 München
  Tel. 089 2180-2774
  Fax. 089 2180-992774
  Mobil. 0152-01549335
  e-mail: bernhard treutwein (at) verwaltung uni-muenchen de
 

> -----Original Message-----
> From: Alexander Iljin [mailto:ajsoft at yandex.ru] 
> Sent: Friday, January 16, 2009 8:18 AM
> To: oberon at lists.inf.ethz.ch
> Subject: [Oberon] Texts.Reader question
> 
> 
> Hello!
> 
>   I've got a technical question about the Oberon Texts module.
>   What happens if I open a Reader on a Text, read some data, then
>   modify the Text (e.g. by deleting a piece of text containing the
>   Reader's current position), and then read on without reopening the
>   Reader? Will the Reader operate on the modified version of the Text,
>   or on the version as it was at the time of OpenReader call, or is
>   the behavior undefined in this situation? In what document can I
>   find this aspect described? I tried reading the "Project Oberon"
>   book, but I didn't find any mentions of this situation. Is it
>   prohibited to change the Text being read, or will the Text notify
>   its Readers somehow of the change?
> 
> ---=====---
>  Alexander
> 
> 
>