annotate-snippets replacement for language-reporting emit.rs example

emit.rs

use annotate_snippets::display_list::DisplayList;
use annotate_snippets::formatter::DisplayListFormatter;
use annotate_snippets::snippet::{Annotation, AnnotationType, Slice, Snippet, SourceAnnotation};

fn main() {
    let source = r##"
(define test 123)
(+ test "")
()
"##;

    // First snippet
    let snippet = Snippet {
        slices: vec![Slice {
            source: source.to_string(),
            line_start: 1,
            origin: Some("test".to_string()),
            fold: true,
            annotations: vec![
                SourceAnnotation {
                    label: "Expected integer but got string".to_string(),
                    annotation_type: AnnotationType::Error,
                    range: (29, 31),
                },
                SourceAnnotation {
                    label: "Expected integer but got string".to_string(),
                    annotation_type: AnnotationType::Info,
                    range: (29, 31),
                },
            ],
        }],
        title: Some(Annotation {
            label: Some("Unexpected type in `+` application".to_string()),
            id: Some("E0001".to_string()),
            annotation_type: AnnotationType::Error,
        }),
        footer: vec![],
    };

    let dl = DisplayList::from(snippet);
    let dlf = DisplayListFormatter::new(true, false);
    println!("{}\n", dlf.format(&dl));

    // Second snippet
    let snippet = Snippet {
        slices: vec![Slice {
            source: source.to_string(),
            line_start: 1,
            origin: Some("test".to_string()),
            fold: true,
            annotations: vec![SourceAnnotation {
                label: "".to_string(),
                annotation_type: AnnotationType::Warning,
                range: (21, 32),
            }],
        }],
        title: Some(Annotation {
            label: Some("`+` function has no effect unless its result is used".to_string()),
            id: None,
            annotation_type: AnnotationType::Warning,
        }),
        footer: vec![Annotation {
            label: Some("Great job!".to_string()),
            id: None,
            annotation_type: AnnotationType::Help,
        }],
    };

    let dl = DisplayList::from(snippet);
    let dlf = DisplayListFormatter::new(true, false);
    println!("{}", dlf.format(&dl));
}