cl_structures/
span.rs

1//! - [struct@Span]: Stores the start and end [struct@Loc] of a notable AST node
2//! - [struct@Loc]: Stores the line/column of a notable AST node
3#![allow(non_snake_case)]
4
5/// Stores the start and end [locations](struct@Loc) within the token stream
6#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
7pub struct Span {
8    pub head: Loc,
9    pub tail: Loc,
10}
11pub const fn Span(head: Loc, tail: Loc) -> Span {
12    Span { head, tail }
13}
14
15impl Span {
16    pub const fn dummy() -> Self {
17        Span { head: Loc::dummy(), tail: Loc::dummy() }
18    }
19}
20
21/// Stores a read-only (line, column) location in a token stream
22#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
23pub struct Loc {
24    line: u32,
25    col: u32,
26}
27pub const fn Loc(line: u32, col: u32) -> Loc {
28    Loc { line, col }
29}
30impl Loc {
31    pub const fn dummy() -> Self {
32        Loc { line: 0, col: 0 }
33    }
34    pub const fn line(self) -> u32 {
35        self.line
36    }
37    pub const fn col(self) -> u32 {
38        self.col
39    }
40}
41
42impl std::fmt::Display for Loc {
43    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
44        let Loc { line, col } = self;
45        write!(f, "{line}:{col}")
46    }
47}
cl_structures/span.rs

cl_structures/
span.rs
