Daniel Fischer wrote:
The problem is that "|" is a prefix of "||" and it gets the first bite. So when the parser gets to "||" it first tries to parse a bitwise or. That succeeds. Then the parser is looking for an operand, but it finds the second - unexpected - "|". I don't remember how Parsec's expression parsers work, maybe you can add a "try" some parser(s) to make it work.
I've did try a 'try' but that didn't help. Erik -- ----------------------------------------------------------------- Erik de Castro Lopo ----------------------------------------------------------------- "Whenever the C++ language designers had two competing ideas as to how they should solve some problem, they said, "OK, we'll do them both". So the language is too baroque for my taste." -- Donald E Knuth