package shakuhachi

  1. Overview
  2. Docs
A music collection manager

Install 

dune-project
 Dependency

codeberg.org Readme Edit opam file Versions (5)

Authors

  1. E
    EruEri <nayinayu@mailo.com>

Maintainers

  1. E
    EruEri <nayinayu@mailo.com>

Sources

0.1.0.tar.gz
sha256=bb7f91cc44c09f922d2a614e9e01fd0d2976840bacf839a8b99de63c6fc5b3b8
sha512=f02827db4228b017bb2ad7d64cb1c0667831ec2341e6f759266ec834e40627c2affeace143c6d5e769b3acce63f889b3cbd1a9ca4768091840e8fce1d4750f86

doc/src/shakuhachi.query/range.ml.html

Source file range.ml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
(**********************************************************************************************)
(*                                                                                            *)
(* This file is part of shakuhachi: a music collection manager                                *)
(* Copyright (C) 2025 Yves Ndiaye                                                             *)
(*                                                                                            *)
(* shakuhachi is free software: you can redistribute it and/or modify it under the terms      *)
(* of the GNU General Public License as published by the Free Software Foundation,            *)
(* either version 3 of the License, or (at your option) any later version.                    *)
(*                                                                                            *)
(* shakuhachi 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 General Public License for more details.                             *)
(* You should have received a copy of the GNU General Public License along with shakuhachi.   *)
(* If not, see <http://www.gnu.org/licenses/>.                                                *)
(*                                                                                            *)
(**********************************************************************************************)

(** Operations on ranges. *)

(** type of range values. *)
type 'a t = Value of 'a | Range of 'a option * 'a option

(** [value v] is [Value v]. *)
let value e = Value e

(** [range lhs rhs] is [Range lhs rhs]. *)
let range lhs rhs = Range (lhs, rhs)

(** [to_string some range] is the string representation of [range] using [some].
*)
let to_string some = function
  | Value v ->
      some v
  | Range (lhs, rhs) ->
      let lhs = Option.fold ~none:String.empty ~some lhs in
      let rhs = Option.fold ~none:String.empty ~some rhs in
      Printf.sprintf "%s..%s" lhs rhs

(** [matches range v] tests whether [v] matches [ranges]. All extrema borns are
    included. *)
let matches range v =
  match range with
  | Range (None, None) ->
      true
  | Range (Some t, None) ->
      v >= t
  | Range (None, Some t) ->
      v <= t
  | Range (Some lhs, Some rhs) ->
      v >= lhs && v <= rhs
  | Value h ->
      v = h