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Creating multiple elements at the root of the model [message #1739383]

Sun, 31 July 2016 10:58

Horacio Hoyos

Messages: 242
Registered: October 2009
Location: Mexico

Senior Member

As an example consider a simple DSL to construct expressions (I have the exp metamodel):

TextualPathExp returns TextualPathExp:
  'path' name=EString path=Path 'end';

Path ...

I would like to know if it is possible to have a file that has multiple path instances, e.g.

path one <path...> end;
path two <path...> end;
....
path n <path...> end;

And the resulting resource when I parse the file would have multiple TextualPathExp instances at the root.

I know I could add a containing class that can contain may TextualPathExp and add a rule:

TPContainer:
    (TextualPathExp)+

But I would prefer not (read as I cant) modify the metamodel.

Horacio Hoyos Rodriguez
Kinori Tech
Need professional support for Epsilon, EMF?
Go to: https://kinori.tech

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Re: Creating multiple elements at the root of the model [message #1739384 is a reply to message #1739383]

Sun, 31 July 2016 11:12

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

this is not possible sry.

so what about doing both:

ifer a second metamodel that consists only of the root and has a list of elements of the imported metamodel?

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

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