fn extract_load_statement_package_dependencies()

in focus/internals/src/lib/index/content_hash.rs [510:552]

• 39 lines of code
• 3 McCabe index (conditional complexity)

fn extract_load_statement_package_dependencies(content: &str) -> BTreeSet<Label> {
    lazy_static! {
        static ref RE: Regex = Regex::new(
            r#"(?x)
# Literal "load".
load
\s*?

# Open parenthesis.
\(
\s*?

# String literal enclosed in quotes.
(?:
    "( [[:print:]--"]*? )"
  | '( [[:print:]--']*? )'
)

# Either a closing parenthesis or a comma to start the argument list.
\s*?
(?:
  ,
| \)
)
"#
        )
        .unwrap();
    }

    let mut result = BTreeSet::new();
    for cap in RE.captures_iter(content) {
        let value = cap.get(1).or_else(|| cap.get(2)).unwrap().as_str();
        let label: Label = match value.parse() {
            Ok(label) => label,
            Err(e) => {
                warn!(?e, "Failed to parse label in load statement");
                continue;
            }
        };
        result.insert(label);
    }
    result
}