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(*
Copyright © 2011 MLstate

This file is part of OPA.

OPA is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License, version 3, as published by
the Free Software Foundation.

OPA is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
more details.

You should have received a copy of the GNU Affero General Public License
along with OPA. If not, see <http://www.gnu.org/licenses/>.
*)
(*
* A private type of *non-functional* buffer
*
* Note: It's not serializable, nor is it meant to be.
*)


##extern-type Buffer2_private.buffer = Buffer.t
##register create \ `Buffer.create` : int -> Buffer2_private.buffer

##register add \ `Buffer.add_string` : Buffer2_private.buffer, string -> void

##register addln: Buffer2_private.buffer, string -> void
let addln buf s =
  Buffer.add_string buf s;
  Buffer.add_string buf "\n"

##register contents \ `Buffer.contents` : Buffer2_private.buffer -> string

##register is_empty: Buffer2_private.buffer -> bool
let is_empty buf = Buffer.length buf = 0

##register reset: Buffer2_private.buffer, int -> void
let reset buf _i = Buffer.clear buf
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