Function merge_name_sets

crates/compile/src/graph.rs:19–27

Absorbs the elements of the smaller [`NameSet`] into the bigger one and returns the merged set.

(mut a: NameSet, mut b: NameSet)

/// Absorbs the elements of the smaller [`NameSet`] into the bigger one and returns
/// the merged set.
pub fn merge_name_sets(mut a: NameSet, mut b: NameSet) -> NameSet {
  if a.len() < b.len() {
    b.extend(a);
    b
  } else {
    a.extend(b);
    a
  }
}

/// Maps each [`Name`] to the set of [`Name`]s it is associated with.
pub type RefMap = FxHashMap<Name, NameSet>;