Module analysis 

Available on crate feature analysis only.

Script analysis and linting for ASS subtitle scripts

Provides comprehensive analysis capabilities including style resolution, linting for common issues, and performance optimization suggestions. Designed for editor integration and script validation.

Features

• Style resolution: Compute effective styles from base + overrides
• Linting rules: Detect common problems and spec violations
• Performance analysis: Identify rendering bottlenecks
• Unicode handling: Bidirectional text and linebreak analysis
• Timing validation: Overlap detection and duration checks

Performance

• Target: <2ms analysis for typical scripts
• Memory: Lazy evaluation to avoid allocation spikes
• Thread-safe: Immutable analysis results

Example

use ass_core::{Script, analysis::ScriptAnalysis};

let script_text = r#"
[Script Info]
Title: Test

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default,Arial,20,&H00FFFFFF,&H000000FF,&H00000000,&H00000000,0,0,0,0,100,100,0,0,1,2,0,2,10,10,10,1

[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,,Hello World!
"#;

let script = Script::parse(script_text)?;
let analysis = ScriptAnalysis::analyze(&script)?;

// Check for issues
for issue in analysis.lint_issues() {
    println!("Warning: {}", issue.message());
}

// Get resolved styles
if let Some(style) = analysis.resolve_style("Default") {
    println!("Font: {}", style.font_name());
}

Re-exports

pub use events::count_overlapping_dialogue_events;

pub use events::count_overlapping_events;

pub use events::find_overlapping_dialogue_events;

pub use events::find_overlapping_events;

pub use events::DialogueInfo;

pub use linting::lint_script;

pub use linting::LintConfig;

pub use linting::LintIssue;

pub use linting::LintRule;

pub use styles::ResolvedStyle;

pub use styles::StyleAnalyzer;

Modules

events

ASS dialogue event analysis and processing

linting

Linting and validation for ASS subtitle scripts.

styles

ASS script style analysis and resolution

Structs

AnalysisConfig

Configuration for script analysis

PerformanceSummary

Performance analysis summary

ScriptAnalysis

Comprehensive analysis of an ASS script

ScriptAnalysisOptions

Script analysis options