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Integer-based qualified IDs [message #1400650]

Mon, 14 July 2014 14:14

Fabian G.

Messages: 60
Registered: May 2010
Location: Christchurch (NZ)

Member

Hi,

I'm trying to build a rule to have integer-based IDs, of the form INT('.'INT)* (like the usual qualified ID rule, but only with integers).

However, as a result with that rule, I always have to put a space between the INT and the dot, like for example, 1 .1

I cannot use the fully-qualified ID rule since IDs are always starting with a letter. I tried many other alternatives, without any success and I'm running out of ideas. Any clue?

Thanks in advance,
Fabian

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Re: Integer-based qualified IDs [message #1400681 is a reply to message #1400650]

Mon, 14 July 2014 15:11

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

please share a complete reproduceable grammar.

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

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Re: Integer-based qualified IDs [message #1400734 is a reply to message #1400681]

Mon, 14 July 2014 16:43

Fabian G.

Messages: 60
Registered: May 2010
Location: Christchurch (NZ)

Member

By making the following MWE, I found the rule works. It looks like I have another thing that is messing up.

Thanks for your hint, the rule is working as expected.

Model :
  'package' pname=FQN';'
  imports+=Import*
  'model' name=ID revision=REVNUMBER';'
  types+=Type*
  elements+=Element*;

Import :
  'import' importedNamespace=FQNWithWildCard';';

Type :
  'type' name=ID';';

Element :
  name=ID type=[Type|FQN]';';

FQN :
  ID('.'ID)*;

FQNWithWildCard :
  FQN '.*'?;

REVNUMBER :
  INT('.'INT)*;

thanks for your help,
Fabian

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Re: Integer-based qualified IDs [message #1400769 is a reply to message #1400734]

Mon, 14 July 2014 17:39

Fabian G.

Messages: 60
Registered: May 2010
Location: Christchurch (NZ)

Member

Ok, I found the problem. It seems the below rules are conflicting (tested on the MWE):

terminal DECIMALVALUE returns ecore::EBigDecimal:
  ('0'..'9')+ '.' ('0'..'9')+;

REVNUMBER :
  INT('.'INT)*;

Any idea on how I can define both a decimal number representation and a "dotted integer ID" concurrently ? I could simply write a validator, but maybe a smart grammar rule can make it for me.

Thanks for your advice,
Fabian

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