Struct TimingOverlapRule 

pub struct TimingOverlapRule;

Available on crate feature analysis only.

Rule for detecting timing overlaps between dialogue events

Uses sweep-line algorithm for efficient O(n log n) overlap detection. Overlapping events can cause rendering conflicts where multiple subtitles appear simultaneously, potentially causing readability issues.

Performance

• Time complexity: O(n log n) via sweep-line algorithm
• Memory: O(n) for temporary data structures
• Target: <1ms for 1000 events on typical hardware

Example

use ass_core::analysis::linting::rules::timing_overlap::TimingOverlapRule;
use ass_core::analysis::linting::LintRule;
use ass_core::{Script, ScriptAnalysis};

let script = Script::parse(r#"
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:00.00,0:00:05.00,Default,,0,0,0,,First event
Dialogue: 0,0:00:03.00,0:00:08.00,Default,,0,0,0,,Overlapping event
"#)?;

let analysis = ScriptAnalysis::analyze(&script)?;
let rule = TimingOverlapRule;
let issues = rule.check_script(&analysis);
assert!(!issues.is_empty()); // Should detect the overlap

Trait Implementations

impl LintRule for TimingOverlapRule

fn id(&self) -> &'static str

Unique identifier for this rule.

fn name(&self) -> &'static str

Human-readable name.

fn description(&self) -> &'static str

Rule description.

fn default_severity(&self) -> IssueSeverity

Default severity level.

fn category(&self) -> IssueCategory

Issue category this rule checks for.

fn check_script(&self, analysis: &ScriptAnalysis<'_>) -> Vec<LintIssue>

Check script and return issues.