Method compose_display

prqlc/prqlc/src/error_message.rs:166–198

(&self, source_path: PathBuf, cache: &mut FileTreeCache)

impl ErrorMessage {
    fn compose_display(&self, source_path: PathBuf, cache: &mut FileTreeCache) -> Option<String> {
        // We always pass color to ariadne as true, and then (currently) strip later.
        let config = Config::default().with_color(true);

        // Create a span tuple with the source path and the error range
        let span = Range::from(self.span?);
        let error_span = (source_path.clone(), span.start..span.end);

        let mut report = Report::build(ReportKind::Error, error_span.clone())
            .with_config(config)
            .with_label(Label::new(error_span).with_message(&self.reason));

        if let Some(code) = &self.code {
            report = report.with_code(code);
        }

        // I don't know how to set multiple hints...
        if !self.hints.is_empty() {
            report.set_help(&self.hints[0]);
        }
        if self.hints.len() > 1 {
            report.set_note(&self.hints[1]);
        }
        if self.hints.len() > 2 {
            report.set_message(&self.hints[2]);
        }

        let mut out = Vec::new();
        report.finish().write(cache, &mut out).ok()?;
        String::from_utf8(out)
            .ok()
            .map(|x| crate::utils::maybe_strip_colors(x.as_str()))
    }

    fn compose_location(&self, source: &Source) -> Option<SourceLocation> {
        let span = self.span?;