69 lines
1.5 KiB
Rust
69 lines
1.5 KiB
Rust
// SPDX-FileCopyrightText: 2026 Qyriad <qyriad@qyriad.me>
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//
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// SPDX-License-Identifier: EUPL-1.1
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use std::num::NonZeroU64;
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#[allow(unused_imports)]
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use crate::prelude::*;
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#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
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pub struct Line(pub u64);
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/// Constructors.
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impl Line {
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pub const fn from_index(index: u64) -> Self {
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Self(index)
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}
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pub const fn from_linenr(linenr: NonZeroU64) -> Self {
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Self(linenr.get() - 1)
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}
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pub const fn next(self) -> Self {
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Self::from_index(self.index() + 1)
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}
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/// Panics if self is line index 0.
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pub const fn prev(self) -> Self {
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Self::from_index(self.index() - 1)
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}
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}
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/// Getters.
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impl Line {
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/// 0-indexed
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pub const fn index(self) -> u64 {
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self.0
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}
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#[cfg(target_pointer_width = "64")]
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pub const fn index_usize(self) -> usize {
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self.0 as usize
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}
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/// 1-indexed
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pub const fn linenr(self) -> u64 {
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self.0 + 1
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}
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}
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/// [Alternate](Formatter::alternate) flag capitalizes "line".
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///
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/// ```
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/// # use dynix::Line;
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/// let line = Line::from_index(22);
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/// assert_eq!(format!("{line}"), "line 23");
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/// assert_eq!(format!("{line:#}"), "Line 23");
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/// ```
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impl Display for Line {
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fn fmt(&self, f: &mut Formatter) -> FmtResult {
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if f.alternate() {
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write!(f, "Line {}", self.linenr())?;
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} else {
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write!(f, "line {}", self.linenr())?;
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}
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Ok(())
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}
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}
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