rust/proc-macro2/location.rs

Source file repositories/reference/linux-study-clean/rust/proc-macro2/location.rs

File Facts

System
Linux kernel
Corpus path
rust/proc-macro2/location.rs
Extension
.rs
Size
918 bytes
Lines
32
Domain
Rust Kernel Layer
Bucket
Rust API Membrane
Inferred role
Rust Kernel Layer: implementation source
Status
source implementation candidate

Why This File Exists

Rust-side wrappers and abstractions around kernel C APIs, ownership contracts, allocation, synchronization, and module integration.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: Apache-2.0 OR MIT

use core::cmp::Ordering;

/// A line-column pair representing the start or end of a `Span`.
///
/// This type is semver exempt and not exposed by default.
#[cfg_attr(docsrs, doc(cfg(feature = "span-locations")))]
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
pub struct LineColumn {
    /// The 1-indexed line in the source file on which the span starts or ends
    /// (inclusive).
    pub line: usize,
    /// The 0-indexed column (in UTF-8 characters) in the source file on which
    /// the span starts or ends (inclusive).
    pub column: usize,
}

impl Ord for LineColumn {
    fn cmp(&self, other: &Self) -> Ordering {
        self.line
            .cmp(&other.line)
            .then(self.column.cmp(&other.column))
    }
}

impl PartialOrd for LineColumn {
    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
        Some(self.cmp(other))
    }
}

Annotation

Implementation Notes