package tezos-protocol-014-PtKathma

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This module contains constants and utility functions for gas metering functions used when handling SC rollups operations in context.

module Constants : sig ... end

val is_valid_parameters_ty_cost : 
  ty_size:'a Saturation_repr.t ->
  Saturation_repr.may_saturate Saturation_repr.t

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

val cost_add_serialized_messages : 
  num_messages:int ->
  total_messages_size:int ->
  int32 ->
  Gas_limit_repr.cost

cost_add_serialized_messages ~num_messages ~total_messages_length level returns the cost of adding num_messages with total messages size total_messages_size to a sc-rollup inbox at level level. This function is used internally in the Sc_rollup_storage module.

val cost_serialize_internal_inbox_message : 
  Sc_rollup_inbox_message_repr.internal_inbox_message ->
  Gas_limit_repr.cost

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.

val cost_deserialize_outbox_message : bytes_len:int -> Gas_limit_repr.cost

cost_deserialize_outbox_message ~bytes_len is the cost of the deserialization of an outbox message. It's equal to the cost of deserializing script expression of size bytes_len.