lcms2/
error.rs

1use foreign_types::ForeignType;
2use std::error::Error as StdError;
3use std::fmt;
4
5#[derive(Debug, Copy, Clone, Eq, PartialEq)]
6pub enum Error {
7    ObjectCreationError,
8    MissingData,
9    InvalidString,
10}
11
12impl Error {
13    #[inline]
14    pub(crate) unsafe fn if_null<T>(handle: *mut <T as ForeignType>::CType) -> LCMSResult<T> where T: ForeignType {
15        if !handle.is_null() {
16            Ok(T::from_ptr(handle))
17        } else {
18            Err(Error::ObjectCreationError)
19        }
20    }
21}
22
23/// This is a regular `Result` type with LCMS-specific `Error`
24pub type LCMSResult<T> = Result<T, Error>;
25
26impl fmt::Display for Error {
27    #[cold]
28    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
29        f.write_str(match *self {
30            Error::ObjectCreationError => "Could not create the object.\nThe reason is not known, but it's usually caused by wrong input parameters.",
31            Error::InvalidString => "String is not valid. Contains unsupported characters or is too long.",
32            Error::MissingData => "Requested data is empty or does not exist.",
33        })
34    }
35}
36
37impl StdError for Error {
38}
lcms2/error.rs

lcms2/
error.rs
