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cl-structures: Make Span and Loc functions const (now you can make a const Span!)

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John 2024-04-22 21:44:12 -05:00
parent b74c4cd5bf
commit 45d75bb552
1 changed files with 13 additions and 4 deletions
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17
compiler/cl-structures/src/span.rs
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@ -8,24 +8,33 @@ pub struct Span {
pub head: Loc, pub head: Loc,
pub tail: Loc, pub tail: Loc,
} }
pub fn Span(head: Loc, tail: Loc) -> Span { pub const fn Span(head: Loc, tail: Loc) -> Span {
Span { head, tail } Span { head, tail }
} }
impl Span {
pub const fn dummy() -> Self {
Span { head: Loc::dummy(), tail: Loc::dummy() }
}
}
/// Stores a read-only (line, column) location in a token stream /// Stores a read-only (line, column) location in a token stream
#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)] #[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct Loc { pub struct Loc {
line: u32, line: u32,
col: u32, col: u32,
} }
pub fn Loc(line: u32, col: u32) -> Loc { pub const fn Loc(line: u32, col: u32) -> Loc {
Loc { line, col } Loc { line, col }
} }
impl Loc { impl Loc {
pub fn line(self) -> u32 { pub const fn dummy() -> Self {
Loc { line: 0, col: 0 }
}
pub const fn line(self) -> u32 {
self.line self.line
} }
pub fn col(self) -> u32 { pub const fn col(self) -> u32 {
self.col self.col
} }
} }