Trait StableHashCtxt 

pub trait StableHashCtxt {
    // Required methods
    fn stable_hash_span(&mut self, span: RawSpan, hasher: &mut StableHasher);
    fn def_path_hash(&self, def_id: RawDefId) -> RawDefPathHash;
    fn stable_hash_controls(&self) -> StableHashControls;
    fn assert_default_stable_hash_controls(&self, msg: &str);
}

This trait lets StableHash and derive(StableHash) be used in this crate (and other crates upstream of rustc_middle), while leaving certain operations to be defined in rustc_middle where more things are visible.

Required Methods

fn stable_hash_span(&mut self, span: RawSpan, hasher: &mut StableHasher)

The main event: stable hashing of a span.

fn def_path_hash(&self, def_id: RawDefId) -> RawDefPathHash

Compute a DefPathHash.

fn stable_hash_controls(&self) -> StableHashControls

Get the stable hash controls.

fn assert_default_stable_hash_controls(&self, msg: &str)

Assert that the provided StableHashCtxt is configured with the default StableHashControls. We should always have bailed out before getting to here with a

Implementors