[antlr-interest] Help on recursive tree grammar rule

[Paulius Juodisius]

Hi,

I am fairly new to Antlr and trying to learn all its features. Currently 
I am struggling to define tree grammar where tree visitor would return 
objects that have reference to previously created objects. More 
specifically parser grammar a rule has a recursion to itself. However I 
am not sure on how recursive rule can be defined in tree grammar in with 
a respect to parent tree node expression.

Below I will briefly describe my language samples and snippets from 
combined grammar.

I need to parse such expressions:
entity1/entity2/property
entity1/entity2/entity3/property
and so on..

 From a tree grammar I am expecting to get an objects that conform to 
following classes.
class property {
     ientity source;
}
interface ientity
class entity: ientity{
     ientity source;
}
class root: ientity {}


I have defined parser rules:

entityPropertyRef
     :    linkedEntities property -> ^(ENTITYPROPERTY linkedEntities 
property)
     ;
linkedEntities
     :    entity^ (linkedEntities)*;
     ;
entity: MEMBER "/"!;
property: MEMBER;

and lexer rules:
MEMBER: LETTER ( NAMECHAR )* ;
fragment LETTER
     : 'a'..'z'
     | 'A'..'Z'
     ;
fragment NAMECHAR : LETTER | DIGIT | '_' ;
fragment DIGIT : '0'..'9';



Sincerely,
Paulius