// 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))    }}