naga/
error.rs

1use std::{error::Error, fmt};
2
3#[derive(Clone, Debug)]
4pub struct ShaderError<E> {
5    /// The source code of the shader.
6    pub source: String,
7    pub label: Option<String>,
8    pub inner: Box<E>,
9}
10
11#[cfg(feature = "wgsl-in")]
12impl fmt::Display for ShaderError<crate::front::wgsl::ParseError> {
13    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
14        let label = self.label.as_deref().unwrap_or_default();
15        let string = self.inner.emit_to_string(&self.source);
16        write!(f, "\nShader '{label}' parsing {string}")
17    }
18}
19#[cfg(feature = "glsl-in")]
20impl fmt::Display for ShaderError<crate::front::glsl::ParseErrors> {
21    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
22        let label = self.label.as_deref().unwrap_or_default();
23        let string = self.inner.emit_to_string(&self.source);
24        write!(f, "\nShader '{label}' parsing {string}")
25    }
26}
27#[cfg(feature = "spv-in")]
28impl fmt::Display for ShaderError<crate::front::spv::Error> {
29    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
30        let label = self.label.as_deref().unwrap_or_default();
31        let string = self.inner.emit_to_string(&self.source);
32        write!(f, "\nShader '{label}' parsing {string}")
33    }
34}
35impl fmt::Display for ShaderError<crate::WithSpan<crate::valid::ValidationError>> {
36    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
37        use codespan_reporting::{files::SimpleFile, term};
38
39        let label = self.label.as_deref().unwrap_or_default();
40        let files = SimpleFile::new(label, &self.source);
41        let config = term::Config::default();
42        let mut writer = termcolor::NoColor::new(Vec::new());
43        term::emit(&mut writer, &config, &files, &self.inner.diagnostic())
44            .expect("cannot write error");
45        write!(
46            f,
47            "\nShader validation {}",
48            String::from_utf8_lossy(&writer.into_inner())
49        )
50    }
51}
52impl<E> Error for ShaderError<E>
53where
54    ShaderError<E>: fmt::Display,
55    E: Error + 'static,
56{
57    fn source(&self) -> Option<&(dyn Error + 'static)> {
58        Some(&self.inner)
59    }
60}
naga/error.rs

naga/
error.rs
