[antlr-interest] CommonAST derived class problem
Jose Ventura
jose.ventura.roda at gmail.com
Wed Jul 26 03:59:08 PDT 2006
I've one problem whit a derived AST class. When I use the option 1 all run
ok, but when I trie to use the option 2 I have a problem.
Option 1
--------
in parser/ext/parser.g
ASTLabelType = "parser.Nodo"
in parser/Nodo.java
public class Nodo extends CommonAST{...}
Option 2
--------
in parser/ext/parser.g
ASTLabelType = "parser.ext.NodoA"
in parser/ext/NodoA
public class NodoA extends Nodo {...}
in parser/Nodo.java
public abstract class Nodo extends CommonAST{...}
problem:
-----------
Can't create AST Node parser.ext.NodoA
this occurs in the next method of ASTFactory.java
protected AST create(Class c) {
AST t = null;
try {
* t = (AST)c.newInstance(); // make a new one <<====*
}
catch (Exception e) {
error("Can't create AST Node " + c.getName());
return null;
}
return t;
}
Apparently, the class parser.ext.NodoA is founded because if I change
the class name to another, the message is "Can't find/access AST Node type
NodoB", then if NodoA is derived from Nodo and Nodo from CommonAST, what's
the problem?
I was able to see where can be it.
Any help will be appreciated
Thank's in advance.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.antlr.org/pipermail/antlr-interest/attachments/20060726/a07f65a9/attachment.html
More information about the antlr-interest
mailing list