Method apply

crates/execution/txpool/src/validity.rs:314–319

Applies the predicates to the builder-inbound transaction. This is the builder RPC ingress path, distinct from the mempool node's `base_sendRawTransactionValidity`. The count bound is enforced separately by [`Self::validate`]; here each predicate's parameters are re-checked as defense-in-depth against a misbehaving upstream. Unlike the mempool ingress, an empty predicate set is not rejected: the

(self, tx: BasePooledTransaction)

    /// ingress, an empty predicate set is not rejected: the builder legitimately
    /// receives ordinary transactions that carry no predicates.
    fn apply(self, tx: BasePooledTransaction) -> Result<BasePooledTransaction, ExtensionError> {
        for (index, predicate) in self.validity.iter().enumerate() {
            predicate.validate_params(index).map_err(|e| ExtensionError(e.to_string()))?;
        }
        Ok(tx.with_validity_predicates(self.validity))
    }
}

#[cfg(test)]