vapoursynth/vsscript/
errors.rs

1use std::ffi::{CString, NulError};
2use std::{fmt, io};
3
4use thiserror::Error;
5
6/// The error type for `vsscript` operations.
7#[derive(Error, Debug)]
8pub enum Error {
9    #[error("Couldn't convert to a CString")]
10    CStringConversion(#[source] NulError),
11    #[error("Couldn't open the file")]
12    FileOpen(#[source] io::Error),
13    #[error("Couldn't read the file")]
14    FileRead(#[source] io::Error),
15    #[error("Path isn't valid Unicode")]
16    PathInvalidUnicode,
17    #[error("An error occurred in VSScript")]
18    VSScript(#[source] VSScriptError),
19    #[error("There's no such variable")]
20    NoSuchVariable,
21    #[error("Couldn't get the core")]
22    NoCore,
23    #[error("There's no output on the requested index")]
24    NoOutput,
25    #[error("Couldn't get the VapourSynth API")]
26    NoAPI,
27    #[error("Failed to create VSScript environment")]
28    ScriptCreationFailed,
29}
30
31impl From<NulError> for Error {
32    #[inline]
33    fn from(x: NulError) -> Self {
34        Error::CStringConversion(x)
35    }
36}
37
38impl From<VSScriptError> for Error {
39    #[inline]
40    fn from(x: VSScriptError) -> Self {
41        Error::VSScript(x)
42    }
43}
44
45pub(crate) type Result<T> = std::result::Result<T, Error>;
46
47/// A container for a VSScript error.
48#[derive(Error, Debug)]
49pub struct VSScriptError(CString);
50
51impl fmt::Display for VSScriptError {
52    #[inline]
53    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
54        write!(f, "{}", self.0.to_string_lossy())
55    }
56}
57
58impl VSScriptError {
59    /// Creates a new `VSScriptError` with the given error message.
60    #[inline]
61    pub(crate) fn new(message: CString) -> Self {
62        VSScriptError(message)
63    }
64}
vapoursynth/vsscript/errors.rs

vapoursynth/vsscript/
errors.rs
