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Date: -- (:)
From: Alex Baretta <alex@b...>
Subject: Re: [Caml-list] ocamllex question
skaller wrote:
> Can eof be read from a lexbuf more than once by an ocamllex lexer?
> In particular is a recursive lexer matches an eof and
> returns to its caller, can the parent caller still read
> another eof?
> 
> In other words, is the character stream postpended by one eof
> or an infinite stream of them?

"eof" in ocamllex is a "condition" not a token. It's like "\b" in emacs,
which matches the empty string but only at the beginning or end of a
word. In ocamllex "eof" matches the empty string at the end of a lexbuf,
thus matching eof is non-destructive lexbuf-wise and can repeated any
number of times.

Alex

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