📦 ordovicia / kd-tree

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
53
54
55
56
57use std::fmt::{self, Display};

use failure::{Backtrace, Context, Fail};

#[derive(Debug)]
pub struct Error {
    inner: Context<ErrorKind>,
}

#[derive(Copy, Clone, Debug, Eq, PartialEq, Fail)]
pub enum ErrorKind {
    #[fail(
        display = "dimension does not match (expected: {}, actual, {})",
        expected, actual
    )]
    DimensionNotMatch { expected: usize, actual: usize },

    #[fail(display = "location of point is not finite")]
    LocationNotFinite,
}

impl Fail for Error {
    fn cause(&self) -> Option<&dyn Fail> {
        self.inner.cause()
    }

    fn backtrace(&self) -> Option<&Backtrace> {
        self.inner.backtrace()
    }
}

impl Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        Display::fmt(&self.inner, f)
    }
}

impl Error {
    pub fn kind(&self) -> ErrorKind {
        *self.inner.get_context()
    }
}

impl From<ErrorKind> for Error {
    fn from(kind: ErrorKind) -> Error {
        Error {
            inner: Context::new(kind),
        }
    }
}

impl From<Context<ErrorKind>> for Error {
    fn from(inner: Context<ErrorKind>) -> Error {
        Error { inner }
    }
}