--------------------------------------------------
Main.java
--------------------------------------------------
8c8
< //      parser.setASTNodeType("MyAST");
---
>       parser.setASTNodeType("MyKludgeASTNode");
14c14
<       w.setASTNodeType("MyAST");
---
>       w.setASTNodeType("MyKludgeASTNode");
20c20
<       e.setASTNodeType("MyAST");
---
>       e.setASTNodeType("MyKludgeASTNode");
--------------------------------------------------
MyAST.java
--------------------------------------------------
1,3c1
< import antlr.CommonAST;
< 
< public class MyAST extends CommonAST {
---
> public class MyAST extends MyASTNode {
17a16,21
>    public MyASTNode dup() {
>       MyAST m = new MyAST();
>       m.initialize( this.getToken() );
>       m.setExprType( this.ExprType );
>       return m;
>    }
--------------------------------------------------
walker.g
--------------------------------------------------
31c31
<       | #(op:PLUS left:expr right:expr)
---
>       |! #(op:PLUS left:expr right:expr)
33,36c33,38
<              MyAST _expr = (MyAST)#expr,
<                    _left = (MyAST)#left,
<                    _right = (MyAST)#right;
<              _expr.setExprType(10 + _left.getExprType() + _right.getExprType());
---
>              MyAST t= new MyAST();
>              t.initialize(MyASTNode.fromAST(#op).getToken());
>              MyAST _left = (MyAST)MyASTNode.fromAST(#left),
>                    _right = (MyAST)MyASTNode.fromAST(#right);
>              t.setExprType(10 + _left.getExprType() + _right.getExprType());
>              #expr = #(MyASTNode.toAST(t), #left, #right);
39c41
<       | #(t_op:TIMES t_left:expr t_right:expr)
---
>       |! #(t_op:TIMES t_left:expr t_right:expr)
41,44c43,48
<              MyAST _expr = (MyAST)#expr,
<                    _left = (MyAST)#t_left,
<                    _right = (MyAST)#t_right;
<              _expr.setExprType(20 + _left.getExprType() +_right.getExprType());
---
>              MyAST t= new MyAST();
>              t.initialize(MyASTNode.fromAST(#t_op).getToken());
>              MyAST _left = (MyAST)MyASTNode.fromAST(#t_left),
>                    _right = (MyAST)MyASTNode.fromAST(#t_right);
>              t.setExprType(20 + _left.getExprType() +_right.getExprType());
>              #expr = #(MyASTNode.toAST(t), #t_left, #t_right);
53c57
<       t.initialize(#i);
---
>            t.initialize(MyASTNode.fromAST(#i).getToken());
55c59
<       #id = t;
---
>       #id = MyASTNode.toAST(t);
62c66
<               t.initialize(#n);
---
>               t.initialize(MyASTNode.fromAST(#n).getToken());
64c68
<               #constant = t;
---
>               #constant = MyASTNode.toAST(t);