Method entry

cranelift/codegen/src/ctxhash.rs:120–138

Look up a key, returning an `Entry` that refers to an existing value or allows inserting a new one.

(&'a mut self, k: K, ctx: &Ctx)

    /// Look up a key, returning an `Entry` that refers to an existing
    /// value or allows inserting a new one.
    pub fn entry<'a, Ctx>(&'a mut self, k: K, ctx: &Ctx) -> Entry<'a, K, V>
    where
        Ctx: CtxEq<K, K> + CtxHash<K>,
    {
        let hash = compute_hash(ctx, &k);
        let raw = self.raw.entry(
            hash as u64,
            |bucket| hash == bucket.hash && ctx.ctx_eq(&bucket.k, &k),
            |bucket| compute_hash(ctx, &bucket.k) as u64,
        );
        match raw {
            hashbrown::hash_table::Entry::Occupied(o) => Entry::Occupied(OccupiedEntry { raw: o }),
            hashbrown::hash_table::Entry::Vacant(v) => Entry::Vacant(VacantEntry {
                hash,
                key: k,
                raw: v,
            }),
        }
    }
}

/// A reference to an existing or vacant entry in the hash table.