Function extract_exception_fqn

src/code_actions/phpstan/add_throws.rs:237–248

Extract the fully-qualified exception class name from a PHPStan `missingType.checkedException` message. Expected formats: - `"Method Ns\Cls::method() throws checked exception Ns\Ex but ..."` - `"Function foo() throws checked exception Ns\Ex but ..."` - `"Get hook for property Ns\Cls::$prop throws checked exception Ns\Ex but ..."`

(message: &str)

/// - `"Function foo() throws checked exception Ns\Ex but ..."`
/// - `"Get hook for property Ns\Cls::$prop throws checked exception Ns\Ex but ..."`
pub(crate) fn extract_exception_fqn(message: &str) -> Option<String> {
    let marker = "throws checked exception ";
    let start = message.find(marker)? + marker.len();
    let rest = &message[start..];
    let end = rest.find(" but")?;
    let fqn = rest[..end].trim();
    if fqn.is_empty() {
        return None;
    }
    // Strip leading backslash if present.
    Some(strip_fqn_prefix(fqn).to_string())
}

/// Information about an existing docblock (or the position to create one).
struct DocblockInfo {