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Domain model: member access [message #700425]

Sat, 23 July 2011 11:57

amazuzu

Messages: 17
Registered: May 2011

Junior Member

Hi

I want to impl member access in domain model example (I mean xtext 1.0 example without xtend or xbase ).

Here what I change in grammar

AbstractElement:
        PackageDeclaration | Type | Import | MemberAccess;

MemberAccess:
	"memberaccess" entity=[Entity] "." attribute = [Attribute];

dsl looks following

datatype int

entity Foo{
	foo:int
}

memberaccess Foo.foo //Couldn't resolve reference to Attribute 'foo'

what i'm doing wrong?

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Re: Domain model: member access [message #700428 is a reply to message #700425]

Sat, 23 July 2011 12:02

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

Qualified names a built by the elements names and their parents names.
so the Attribute foo has the FQN Foo.foo.

so you have to change the grammar too

MemberAccess:
	 attribute = [Attribute|FQN];
FQN: ID ("." ID)*;

or change to local scoping for attibute by putting the attributes under their simple name into scope

	public IScope scope_MemberAccess_attribute(MemberAccess memberAccess, EReference ref) {
		return Scopes.scopeFor(Iterables.filter(memberAccess.getEntity().getFeatures(), Attribute.class));
	}

~Christian

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

[Updated on: Sat, 23 July 2011 12:09]

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