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[Caml-list] AST and "when"
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Date: -- (:)
From: Mike Potanin <potanin@m...>
Subject: [Caml-list] AST and "when"

Can CamlP4 make "when" in pattern?

# <:patt< a when a<0 >>;;
            ^^^^
While expanding quotation "patt":
Parse error: end of input expected after [pattern] (in [pattern])
# <:expr< let p x = match x with a when a<0 -> 1 | b -> b in p z >>;;
                                   ^^^^
While expanding quotation "expr":
Parse error: '->' expected after [ipatt] (in [expression])


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