language_reporting/
span.rs

1use derive_new::new;
2use std::fmt::Debug;
3use std::path::PathBuf;
4
5#[derive(Debug)]
6pub enum FileName {
7    Virtual(PathBuf),
8    Real(PathBuf),
9    Verbatim(String),
10}
11
12#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash, Ord, PartialOrd, new)]
13pub struct Location {
14    pub line: usize,
15    pub column: usize,
16}
17
18pub trait ReportingSpan: Debug + Copy {
19    fn with_start(&self, start: usize) -> Self;
20    fn with_end(&self, end: usize) -> Self;
21    fn start(&self) -> usize;
22    fn end(&self) -> usize;
23}
24
25pub trait ReportingFiles: Debug + Clone {
26    type Span: ReportingSpan;
27    type FileId: Copy;
28
29    fn byte_span(
30        &self,
31        file: Self::FileId,
32        from_index: usize,
33        to_index: usize,
34    ) -> Option<Self::Span>;
35
36    fn file_id(&self, span: Self::Span) -> Self::FileId;
37    fn file_name(&self, file: Self::FileId) -> FileName;
38    fn byte_index(&self, file: Self::FileId, line: usize, column: usize) -> Option<usize>;
39    fn location(&self, file: Self::FileId, byte_index: usize) -> Option<Location>;
40    fn line_span(&self, file: Self::FileId, lineno: usize) -> Option<Self::Span>;
41    fn source(&self, span: Self::Span) -> Option<String>;
42}
language_reporting/span.rs

language_reporting/
span.rs
