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36 lines
771 B
OCaml
36 lines
771 B
OCaml
(* This file is free software, part of containers. See file "license" for more details. *)
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(** {1 Utils around char}
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@since 0.14 *)
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open CCShims_
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include Char
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let equal (a:char) b = Stdlib.(=) a b
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let pp_buf = Buffer.add_char
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let pp = Format.pp_print_char
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let of_int_exn = Char.chr
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let of_int c = try Some (of_int_exn c) with Invalid_argument _ -> None
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let to_int = Char.code
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(*$=
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(Some 'a') (of_int (to_int 'a'))
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None (of_int 257)
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*)
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let to_string c = String.make 1 c
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(*$Q to_string
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(Q.string_of_size (Q.Gen.return 1)) (fun s -> to_string s.[0] = s)
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*)
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let lowercase_ascii = function
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| 'A'..'Z' as c -> Char.unsafe_chr (Char.code c + 32)
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| c -> c
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let uppercase_ascii = function
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| 'a'..'z' as c -> Char.unsafe_chr (Char.code c - 32)
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| c -> c
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