blob: 82c0ac9ef3465d279797f9829e5704ca9fc28ef4 (
plain)
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
|
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
//
//! FailableBool Filter implementation, so we can insert this in filter construction
//!
//! Will be automatically included when including `filter::Filter`, so importing this module
//! shouldn't be necessary.
//!
use failable::filter::FailableFilter;
#[must_use = "filters are lazy and do nothing unless consumed"]
#[derive(Clone)]
pub struct FailableBool(bool);
impl FailableBool {
pub fn new(b: bool) -> FailableBool {
FailableBool(b)
}
}
impl From<bool> for FailableBool {
fn from(b: bool) -> FailableBool {
FailableBool::new(b)
}
}
impl<N, E> FailableFilter<N, E> for FailableBool {
fn filter(&self, _: &N) -> Result<bool, E> {
Ok(self.0)
}
}
|
