[antlr-interest] Urgent help tree building

[mzukowski at yci.com]

Use manual tree building, so I turned off tree building for the rule.
Having null as the root below just means that the resulting tree will be all
siblings with no children.  In this case the second sibling is a tree with
EXTENDS as the root and a as the child.

name_def!:
	a:IDENT "subclass" COLON SHARP c:IDENT
	{##=#(null,c,#(#[EXTENDS,"EXTENDS"],a));}

Monty

-----Original Message-----
From: Nico [mailto:nico123 at adinet.com.uy] 
Sent: Monday, September 22, 2003 4:10 PM
To: antlr-interest at yahoogroups.com
Subject: [antlr-interest] Urgent help tree building

Hi:
 
I have a question in building a tree with buildAST = true;
I am building a custom tree, from a partial Smalltalk-80 grammar.
 
When I have this Lexer rule:
 
name_def: 
 a:IDENT "subclass"! COLON! SHARP! c:IDENT
 
I want to create this tree:
 
- c:IDENT
- EXTENDS
   - a:IDENT
 
c:IDENT and EXTENDS are in same level. - a:IDENT is EXTEND'S child
and "subclass"! COLON! SHARP! don't want to be in the tree.
 
The source is:
 
Object subclass: #AClasesPOS2
 
How do i do that?I apreciate the help!
 
regards
 
Nico
 

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