40 lines
1.4 KiB
OCaml
40 lines
1.4 KiB
OCaml
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(* Copyright (C) 2017--2024 Petter A. Urkedal <paurkedal@gmail.com>
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version, with the LGPL-3.0 Linking Exception.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* and the LGPL-3.0 Linking Exception along with this library. If not, see
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* <http://www.gnu.org/licenses/> and <https://spdx.org>, respectively.
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*)
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(** Row multiplicity. *)
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type +'m t constraint 'm = [< `Zero | `One | `Many]
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type zero = [`Zero]
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type one = [`One]
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type zero_or_one = [`Zero | `One]
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type zero_or_more = [`Zero | `One | `Many]
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val zero : [> `Zero] t
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val one : [> `One] t
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val zero_or_one : [> `Zero | `One] t
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val zero_or_more : [> `Zero | `One | `Many] t
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val only_zero : [< `Zero] t -> unit
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val only_one : [< `One] t -> unit
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val only_zero_or_one : [< `Zero | `One] t -> unit
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val expose : 'm t -> [`Zero | `One | `Zero_or_one | `Zero_or_more]
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val can_be_zero : 'm t -> bool
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val can_be_many : 'm t -> bool
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