[antlr-interest] Re: ANTLR 3 tree structure stuff

[atripp54321]

Terrance,

Why not use the built-in Swing TreeNode data structure?
TreeNode is the interface: 
http://java.sun.com/j2se/1.5.0/docs/api/javax/swing/tree/TreeNode.html
and DefaultMutableTreeNode is your typical implementation:
http://java.sun.com/j2se/1.5.0/docs/api/javax/swin
g/tree/DefaultMutableTreeNode.html

DefaultMutableTreeNode (ugg, what an awful name!) may seem like
overkill, but hey, if the code's already there and working, why not?
If you want something simpler, just subclass MutableTreeNode
instead.

The only difference I see between your proposal and this is
that you have stuff like getNextSibling(), while the built-in
one forces you to use an iterator (actually, it's still using
Enumeration rather than Iterator - another uggh!).

I always thought it strange that Sun chose to put their
List and Map data structures in the java.util package, but their
Tree data structure in javax.swing. Oh well...nonetheless, it
is a true, full-featured and flexible Tree data structure.

See also the tutorial:
http://java.sun.com/docs/books/tutorial/uiswing/components/tree.html
Note that creating a visual JTree becomes trivial, just pass it
the root DefaultMutableTreeNode:
JTree tree = new JTree(root);

Andy





 
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