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Simplified include [message #1266642]

Fri, 07 March 2014 19:17

Sergio Otero

Messages: 39
Registered: June 2012

Member

Hi

I know it's been talked another time about the difficulty of doing c-like includes, but i cannot find the thread after a lot of time searching ...

Anyway, my question is about a simplified include with this specifications:

* The included file can reference things visible in the program that does the include
* The included file can be fully parsed by itself, but not linked (because of the references)
* The program that does the include cannot reference anything inside the included file
* The program that does the include could be fully parsed, linked and compiled without the include
* No need to provide incremental compilation, accurate error line information, etc. Only include the translation of the included file in the context used

Example as if Java where the parsed language (not the intended use):

PROGRAM1:

  int i = 0;
  INCLUDE "INCLUDED"
  System.out.println("PROGRAM1 "+i);

PROGRAM2:

  String i = "str";
  INCLUDE "INCLUDED"
  System.out.println("PROGRAM2 "+i);

INCLUDED:

System.out.println("INCLUDED "+i);

Could anyone please provide some firsts steps to try to implements this requirement?

Thanks

Sergio

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Re: Simplified include [message #1271074 is a reply to message #1266642]

Fri, 14 March 2014 07:23

Sergio Otero

Messages: 39
Registered: June 2012

Member

Any hints, please?

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Re: Simplified include [message #1271087 is a reply to message #1271074]

Fri, 14 March 2014 08:10

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

the question i on what level you want to get that solved.
i think it is a bad idea to have such includes and it maybe tons of work to get it runnings as you want todo it. (depending on how fancy the solution should be)
is this a legacy language? if not you may intoduce a component concept or a function concept and simply call resuable components and functions
instead of a include (c-like)

maybe you can store the root as element (in the Hello World example "model") of the included file under its resource name in the xtext index (by adapting the nameprovider)
but you would have to care about consitency checks and generation or whatever you want todo yourself

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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