On Sep 6, 2015, at 07:01, Bob Weinand <bobw...@hotmail.com> wrote: > Also, Hack is using a completely different parser, doesn't look like we could > borrow anything there. > True, Hack's parser is ocaml based and unrecognizable to the majority of this list. But HHVM's parser (which implements the runtime side of Hack), is a flex/bison parser, not just similar to, but actually directly descended from PHP 5.2's parser. Sure things have diverged since then, but the overall rule structure is nearly identical in spirit. Borrowing concepts should be trivial.
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