zerovec/
error.rs

1// This file is part of ICU4X. For terms of use, please see the file
2// called LICENSE at the top level of the ICU4X source tree
3// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
4
5use core::any;
6use core::fmt;
7
8/// A generic error type to be used for decoding slices of ULE types
9#[derive(Copy, Clone, Debug, PartialEq, Eq)]
10#[non_exhaustive]
11pub enum ZeroVecError {
12    /// Attempted to parse a buffer into a slice of the given ULE type but its
13    /// length was not compatible
14    InvalidLength { ty: &'static str, len: usize },
15    /// The byte sequence provided for `ty` failed to parse correctly
16    ParseError { ty: &'static str },
17    /// The byte buffer was not in the appropriate format for VarZeroVec
18    VarZeroVecFormatError,
19}
20
21impl fmt::Display for ZeroVecError {
22    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
23        match *self {
24            ZeroVecError::InvalidLength { ty, len } => {
25                write!(f, "Invalid length {len} for slice of type {ty}")
26            }
27            ZeroVecError::ParseError { ty } => {
28                write!(f, "Could not parse bytes to slice of type {ty}")
29            }
30            ZeroVecError::VarZeroVecFormatError => {
31                write!(f, "Invalid format for VarZeroVec buffer")
32            }
33        }
34    }
35}
36
37impl ZeroVecError {
38    /// Construct a parse error for the given type
39    pub fn parse<T: ?Sized + 'static>() -> ZeroVecError {
40        ZeroVecError::ParseError {
41            ty: any::type_name::<T>(),
42        }
43    }
44
45    /// Construct an "invalid length" error for the given type and length
46    pub fn length<T: ?Sized + 'static>(len: usize) -> ZeroVecError {
47        ZeroVecError::InvalidLength {
48            ty: any::type_name::<T>(),
49            len,
50        }
51    }
52}
53
54#[cfg(feature = "std")]
55impl ::std::error::Error for ZeroVecError {}
zerovec/error.rs

zerovec/
error.rs
