2011/3/29 Bob Nystrom <[email protected]>: > Wouldn't => work the same way? > (a, b) => > It parses "(a, b)" thinking it's a grouped comma operator (not exactly a > common expression FWIW), then it hits "=>" realizes it's a function > parameter decl, and then either backtracks or just transforms the left-hand > AST into a param decl.
An AST won't cut it. You have to use a parse tree because there are valid grouped comma operators containing only identifier operands that are not valid parameter lists, e.g. ((a), b) Once you do have a way to make the necessary distinctions, => is just another right associative operator that you need to pick a precedence for. _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
