naga/
error.rs

1use alloc::{boxed::Box, string::String, vec::Vec};
2use core::{error::Error, fmt};
3
4#[derive(Clone, Debug)]
5pub struct ShaderError<E> {
6    /// The source code of the shader.
7    pub source: String,
8    pub label: Option<String>,
9    pub inner: Box<E>,
10}
11
12#[cfg(feature = "wgsl-in")]
13impl fmt::Display for ShaderError<crate::front::wgsl::ParseError> {
14    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
15        let label = self.label.as_deref().unwrap_or_default();
16        let string = self.inner.emit_to_string(&self.source);
17        write!(f, "\nShader '{label}' parsing {string}")
18    }
19}
20#[cfg(feature = "glsl-in")]
21impl fmt::Display for ShaderError<crate::front::glsl::ParseErrors> {
22    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
23        let label = self.label.as_deref().unwrap_or_default();
24        let string = self.inner.emit_to_string(&self.source);
25        write!(f, "\nShader '{label}' parsing {string}")
26    }
27}
28#[cfg(feature = "spv-in")]
29impl fmt::Display for ShaderError<crate::front::spv::Error> {
30    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
31        let label = self.label.as_deref().unwrap_or_default();
32        let string = self.inner.emit_to_string(&self.source);
33        write!(f, "\nShader '{label}' parsing {string}")
34    }
35}
36impl fmt::Display for ShaderError<crate::WithSpan<crate::valid::ValidationError>> {
37    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
38        use codespan_reporting::{files::SimpleFile, term};
39
40        let label = self.label.as_deref().unwrap_or_default();
41        let files = SimpleFile::new(label, &self.source);
42        let config = term::Config::default();
43        let mut writer = term::termcolor::NoColor::new(Vec::new());
44        term::emit(&mut writer, &config, &files, &self.inner.diagnostic())
45            .expect("cannot write error");
46        write!(
47            f,
48            "\nShader validation {}",
49            String::from_utf8_lossy(&writer.into_inner())
50        )
51    }
52}
53impl<E> Error for ShaderError<E>
54where
55    ShaderError<E>: fmt::Display,
56    E: Error + 'static,
57{
58    fn source(&self) -> Option<&(dyn Error + 'static)> {
59        Some(&self.inner)
60    }
61}
naga/error.rs

naga/
error.rs
