[antlr-interest] Re: Creating fake tokens
Brad Schick
schick at robotbattle.com
Wed May 5 10:54:30 PDT 2004
> I'm not sure what the goal is, but I bet it could be handled in an
> easier way in the parser:
Thanks both for the info. It does look like building a custom tree
in the parser is easier. I had thought there might be a simple way
to do "injectTokens(new array(ELSE, IF));" in the lexer.
Below is what I am using now. Basically the same as your solution
Mark but with the tree building fixed a bit to make every if contain
2 SLIST blocks.
else_clause
: ELSE! statement_list
| ELSEIF! LPAREN! expression RPAREN! statement_list else_clause
{ ## = #(#[SLIST, "SLIST"], #(#[IF, "if"], ##) );}
| empty
{ ## = #[SLIST, "SLIST"]; };
Thanks,
-Brad
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