Method insert

crates/execution/txpool/src/invalidation.rs:212–222

Registers `hash` under every key in `watch`. If `hash` is already present its previous watch set is removed first, so the index always reflects the latest registration. Returns `true` if this was a fresh insertion (i.e. the hash was not previously registered).

(&mut self, hash: TxHash, watch: WatchSet)

    /// latest registration. Returns `true` if this was a fresh insertion (i.e.
    /// the hash was not previously registered).
    pub fn insert(&mut self, hash: TxHash, watch: WatchSet) -> bool {
        let was_present = self.remove(&hash).is_some();
        for key in watch.keys() {
            self.by_key.entry(*key).or_default().insert(hash);
            if let InvalidationKey::ExpiryBucket(bucket) = key {
                self.expiry_buckets.insert(*bucket);
            }
        }
        self.watch_sets.insert(hash, watch);
        !was_present
    }

    /// Removes `hash` from the index, unlinking it from each of its watched
    /// keys and pruning any key bucket left empty. Returns the transaction's