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use derive_new::new; use std::fmt::Debug; use std::path::PathBuf; #[derive(Debug)] pub enum FileName { Virtual(PathBuf), Real(PathBuf), Verbatim(String), } #[derive(Debug, Copy, Clone, Eq, PartialEq, Hash, Ord, PartialOrd, new)] pub struct Location { pub line: usize, pub column: usize, } pub trait ReportingSpan: Debug + Copy { fn with_start(&self, start: usize) -> Self; fn with_end(&self, end: usize) -> Self; fn start(&self) -> usize; fn end(&self) -> usize; } pub trait ReportingFiles: Debug + Clone { type Span: ReportingSpan; type FileId: Copy; fn byte_span( &self, file: Self::FileId, from_index: usize, to_index: usize, ) -> Option<Self::Span>; fn file_id(&self, span: Self::Span) -> Self::FileId; fn file_name(&self, file: Self::FileId) -> FileName; fn byte_index(&self, file: Self::FileId, line: usize, column: usize) -> Option<usize>; fn location(&self, file: Self::FileId, byte_index: usize) -> Option<Location>; fn line_span(&self, file: Self::FileId, lineno: usize) -> Option<Self::Span>; fn source(&self, span: Self::Span) -> Option<String>; }