[antlr-interest] [v3.1b1:] Is unparsing to textual representation of rewritten AST possible?

[Ralf Cremerius]

Hello,

I'd like to ask, if it is possible to generate an AST, to modify that AST and to automatically unparse that modified AST to it's textual representation afterwards? I thought of something like this:

( textual input ) -> ANTLR lexer+parser grammar constructing AST -> ( AST ) -> ANTLR tree grammar rewriting AST (using v3.1b1 ...) -> ANTLR tree grammar with options output=template and rewrite=true -> (modifiet textual input [according to operations on the AST])

My question is only about the last step, if unparsing from an AST to modified input is possible. Or do I have to define a StringTemplate-template to get the modifications from the rewritten AST into textual output again?

Thanks in advance,
  Ralf
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