Function find_class_at_offset

src/util.rs:772–778

Find which class the cursor (byte offset) is inside. When multiple classes contain the offset (e.g. an anonymous class nested inside a named class's method), the smallest (most specific) class is returned. This ensures that `$this` inside an anonymous class body resolves to the anonymous class, not the outer class.

(classes: &[Arc<ClassInfo>], offset: u32)

/// class is returned.  This ensures that `$this` inside an anonymous
/// class body resolves to the anonymous class, not the outer class.
pub(crate) fn find_class_at_offset(classes: &[Arc<ClassInfo>], offset: u32) -> Option<&ClassInfo> {
    classes
        .iter()
        .map(|c| c.as_ref())
        .filter(|c| offset >= c.start_offset && offset <= c.end_offset)
        .min_by_key(|c| c.end_offset - c.start_offset)
}

/// Find a class in a slice by name, preferring namespace-aware matching
/// when the name is fully qualified.