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Fix debug assertion for diagnostic sort order (#4319)

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The debug assertion that document diagnostics are sorted incorrectly
panics for cases like `[161..164, 162..162]`. The merging behavior
in the following lines that relies on the assertion only needs the
input ranges to be sorted by `range.start`, so this change simplifies
the assertion to only catch violations of that assumption.
This commit is contained in:
Michael Davis 2022-10-16 14:52:04 -05:00 committed by GitHub
parent 63fe423710
commit 5f4f171b73
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1 changed files with 6 additions and 10 deletions
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16
helix-term/src/ui/editor.rs
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@ -302,16 +302,7 @@ pub fn doc_diagnostics_highlights(
let mut warning_vec = Vec::new();
let mut error_vec = Vec::new();
let diagnostics = doc.diagnostics();
// Diagnostics must be sorted by range. Otherwise, the merge strategy
// below would not be accurate.
debug_assert!(diagnostics
.windows(2)
.all(|window| window[0].range.start <= window[1].range.start
&& window[0].range.end <= window[1].range.end));
for diagnostic in diagnostics {
for diagnostic in doc.diagnostics() {
// Separate diagnostics into different Vecs by severity.
let (vec, scope) = match diagnostic.severity {
Some(Severity::Info) => (&mut info_vec, info),
@ -325,6 +316,11 @@ pub fn doc_diagnostics_highlights(
// merge the two together. Otherwise push a new span.
match vec.last_mut() {
Some((_, range)) if diagnostic.range.start <= range.end => {
// This branch merges overlapping diagnostics, assuming that the current
// diagnostic starts on range.start or later. If this assertion fails,
// we will discard some part of `diagnostic`. This implies that
// `doc.diagnostics()` is not sorted by `diagnostic.range`.
debug_assert!(range.start <= diagnostic.range.start);
range.end = diagnostic.range.end.max(range.end)
}
_ => vec.push((scope, diagnostic.range.start..diagnostic.range.end)),