[antlr-interest] Should dup() and dupXXXX() have shallow or deep clone semantics?

[micheal_jor]

Just wondering aloud about this. I mean should object references 
inside the AST nodes just be copied or should the objects be cloned 
as well?

What about object references to non-ANTLR types like String etc?

I presume each call to dup()/dupXXX() be considered as making a 
separate clone of the object/object-graph so all cloned objects and 
cloned referenced objects must be unique across calls.

Micheal


 

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