[antlr-interest] ANTLR3 Pruning the AST
Kailey Joanette
kaileyjo at bigbluebubble.com
Fri Mar 30 06:45:58 PDT 2007
Is there any way to prune an AST so that things like :
EXPR
EXPR_COND
COND_OR_EXPR
COND_AND_EXPR
INCL_OR_EXPR
EXCL_OR_EXPR
AND_EXPR
EQUA_EXPR
INSTANCEOF_EXPR
RELA_EXPR
SHIFT_EXPR
ADDIT_EXPR
MULIT_EXPR
UNARY_EXPR
UNARY_EXPR_NPM
PRIMARY System out println
Will turn into just
EXPR
PRIMARY System out println
I don't care about whats in between unless something actually happens there.
Would it work if I didn't add the EXPR_COND or whatever based on a
predicate? So say ADDIT_EXPR is an expression that looks like 4+5, if only
4 is present then I don't build ADDIT I just keep going down the list.
Kailey
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