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Refactor to add a is_empty_range function

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This commit is contained in:
Armin Ronacher 2021-02-20 15:51:45 +01:00
parent c0e37a9c67
commit 1cc4ec4d25
3 changed files with 14 additions and 6 deletions
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5
src/algorithms/lcs.rs
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@ -7,6 +7,7 @@ use std::ops::{Index, Range};
use std::time::Instant;
use crate::algorithms::DiffHook;
use crate::utils::is_empty_range;
/// Hunt–McIlroy / Hunt–Szymanski LCS diff algorithm.
///
@ -52,10 +53,10 @@ where
D: DiffHook,
New::Output: PartialEq<Old::Output>,
{
if new_range.start >= new_range.end {
if is_empty_range(&new_range) {
d.delete(old_range.start, old_range.len(), new_range.start)?;
return Ok(());
} else if old_range.start >= old_range.end {
} else if is_empty_range(&old_range) {
d.insert(old_range.start, new_range.start, new_range.len())?;
return Ok(());
}