bpwallet/
util.rs

1// Modern, minimalistic & standard-compliant cold wallet library.
2//
3// SPDX-License-Identifier: Apache-2.0
4//
5// Written in 2020-2024 by
6//     Dr Maxim Orlovsky <orlovsky@lnp-bp.org>
7//
8// Copyright (C) 2020-2024 LNP/BP Standards Association. All rights reserved.
9// Copyright (C) 2020-2024 Dr Maxim Orlovsky. All rights reserved.
10//
11// Licensed under the Apache License, Version 2.0 (the "License");
12// you may not use this file except in compliance with the License.
13// You may obtain a copy of the License at
14//
15//     http://www.apache.org/licenses/LICENSE-2.0
16//
17// Unless required by applicable law or agreed to in writing, software
18// distributed under the License is distributed on an "AS IS" BASIS,
19// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20// See the License for the specific language governing permissions and
21// limitations under the License.
22
23// TODO: Move to amplify library
24
25#[derive(Copy, Clone, Ord, PartialOrd, Eq, PartialEq, Hash, Debug)]
26pub struct MayError<T, E> {
27    pub ok: T,
28    pub err: Option<E>,
29}
30
31impl<T, E> MayError<T, E> {
32    pub fn ok(result: T) -> Self {
33        MayError {
34            ok: result,
35            err: None,
36        }
37    }
38
39    pub fn err(ok: T, err: E) -> Self { MayError { ok, err: Some(err) } }
40
41    pub fn map<U>(self, f: impl FnOnce(T) -> U) -> MayError<U, E> {
42        let ok = f(self.ok);
43        MayError { ok, err: self.err }
44    }
45
46    pub fn split(self) -> (T, Option<E>) { (self.ok, self.err) }
47
48    pub fn into_ok(self) -> T { self.ok }
49
50    pub fn into_err(self) -> Option<E> { self.err }
51
52    pub fn unwrap_err(self) -> E { self.err.unwrap() }
53
54    pub fn into_result(self) -> Result<T, E> {
55        match self.err {
56            Some(err) => Err(err),
57            None => Ok(self.ok),
58        }
59    }
60}
bpwallet/util.rs

bpwallet/
util.rs
