[antlr-interest] CommonTree & Tree grammar versus DIY

[Gavin Lambert]

At 14:42 21/08/2008, Gerald Rosenberg wrote:
 >For ad-hoc AST changes, the better approach, at least
 >conceptually, is to implement a low-level structural
 >modification API with methods to "find" a node based on
 >parameter values, and to similarly create, copy, insert and
 >delete nodes.

You can write a tree grammar to do the find (or just do it 
manually, depending on how flexible your find requirements are), 
and use the TreeAdaptors for modifying the tree structure 
afterwards...