is_valid_parameters_ty_cost ty returns the cost of checking whether a type is a valid sc rollup parameter.

cost_serialize_internal_inbox_message internal_inbox_message is the cost of the serialization of an internal inbox message. It's equal to the cost of serializing the script expression, with Script_repr.force_bytes_cost plus a fixed amount for the serialized addresses.

It traverses the payload expression to find the precise cost. It is safe to use Script_repr.force_bytes_cost because the payload of an internal inbox message is bounded.

cost_deserialize_output_proof ~bytes_len is the cost of the deserialization of an output proof. It's equal to the cost of deserializing a script expression of size bytes_len.

cost_serialize_external_inbox_message ~bytes_len is the cost of the serialization of an external inbox message of length bytes_len. It is equal to the estimated cost of encoding a byte multiplied by bytes_len.

cost_hash_bytes ~bytes_len is the cost of hashing bytes_len bytes.

cost_check_dissection ~number_of_states ~tick_size ~hash_size is the cost of checking that a dissection with a given number_of_states used in a refutation game is well-formed. This includes the comparison of a linear number of ticks as well as the verification of two hashes of given hash_size.

cost_verify_output_proof ~bytes_len is the cost of verifying an output proof of length bytes_len.

cost_add_message ~new_cell_index ~msg_len returns the cost of adding a message of length msg_len to a sc-rollup inbox. This function is used internally in the Sc_rollup_storage module and covers the function Sc_rollup_inbox_merkelized_payload_hashes_repr.add_payload