fn metadata_of<'a>(
    unit: &Unit,
    cx: &Context<'_, '_>,
    metas: &'a mut HashMap<Unit, MetaInfo>
) -> &'a MetaInfo
Expand description

Gets the metadata hash for the given Unit.

When a metadata hash doesn’t exist for the given unit, this calls itself recursively to compute metadata hashes of all its dependencies. See compute_metadata for how a single metadata hash is computed.