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Scoping for names with Integer type [message #819760]

Tue, 13 March 2012 09:47

Steffen Schuette

Messages: 26
Registered: August 2010

Junior Member

Hi,

I have a scoping problem. In one file the user shall define items that have an id of type INT and a description of type STRING. The id shall be unique. I've aded a validation check for this.

However, in another file, the user shall be able to reference these items. This workes fine if the id field is called 'name' and the type is STRING or ID. But I want to have INT there.

So how do I do the scoping in such a case?

Here is my grammar:

Model:
	(Items|References);
	
Items:
	'Items'
	items+=Item*;
	
Item:
	name=STRING description=STRING;
	//should be name=INT description=STRING;
	
References:
	'References'
	ref+=[Item|QualifiedName];
	
QualifiedName:
  ID ('.' ID)*;

Thx again,

Steffen

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Re: Scoping for names with Integer type [message #819987 is a reply to message #819760]

Tue, 13 March 2012 15:33

Steffen Schuette

Messages: 26
Registered: August 2010

Junior Member

Hi,

found the solution in forum post 298572.

The approach is to wrap an INT terminal in a data type rule and the use this as type in the reference:

Model:
	(Items|References);
	

Items:
	'Items'
	items+=Item*;

INT_ID: 
	INT;
	
Qualified_INT_ID:
  INT_ID ('.' INT_ID)*;
	
Item:
	name=INT_ID description=STRING;
	
References:
	'References'
	ref+=[Item|Qualified_INT_ID];

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