package tezos-protocol-019-PtParisB

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tezos-protocol-019-PtParisB.embedded-protocol
- Tezos_embedded_protocol_019_PtParisB
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tezos-protocol-019-PtParisB.parameters
- Tezos_protocol_019_PtParisB_parameters
  - Default_parameters
    
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tezos-protocol-019-PtParisB.protocol
- Tezos_protocol_019_PtParisB
  - Protocol
tezos-protocol-019-PtParisB.protocol.environment
- Tezos_protocol_environment_019_PtParisB
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tezos-protocol-019-PtParisB.protocol.lifted
- Tezos_protocol_019_PtParisB_lifted
  - Lifted_protocol
    
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tezos-protocol-019-PtParisB.protocol.raw
- Tezos_raw_protocol_019_PtParisB

Legend:
Library
Module
Module type
Parameter
Class
Class type

This module exposes an API for local gas counting. It provides a set of functions for updating a gas counter without applying it on an an Alpha_context.context.

type local_gas_counter =

| Local_gas_counter of int

A local_gas_counter is a wrapped int.

type outdated_context

A type for describing a context that is not up to date with respect to gas consumption.

val update_context : 
  local_gas_counter ->
  outdated_context ->
  Alpha_context.context

val local_gas_counter_and_outdated_context : 
  Alpha_context.context ->
  local_gas_counter * outdated_context

local_gas_counter_and_outdated_context ctxt returns the gas counter value corresponding to the remaining gas in the given context ctxt along with an outdated_context value.

val use_gas_counter_in_context : 
  outdated_context ->
  local_gas_counter ->
  (Alpha_context.context ->
    ('a * Alpha_context.context)
      Tezos_protocol_environment_019_PtParisB.Error_monad.tzresult
      Tezos_protocol_environment_019_PtParisB.Lwt.t) ->
  ('a * outdated_context * local_gas_counter)
    Tezos_protocol_environment_019_PtParisB.Error_monad.tzresult
    Tezos_protocol_environment_019_PtParisB.Lwt.t

use_gas_counter_in_context outdated_ctxt gas_counter f first applies the gas_counter on the outdated context outdated_ctxt, then invokes f on the resulting context, and returns a new outdated_context and a local_gas_counter value.

val consume_opt : 
  local_gas_counter ->
  Alpha_context.Gas.cost ->
  local_gas_counter option

consume_opt amt cost attempts to consume an amt of gas and returns the new remaining value wrapped in Some. If the resulting gas is negative None is returned.

val consume : 
  local_gas_counter ->
  Alpha_context.Gas.cost ->
  local_gas_counter
    Tezos_protocol_environment_019_PtParisB.Error_monad.tzresult

consume amt cost attempts to consume an amt of gas and returns the new remaining value as a result. If the resulting gas is negative, an error Gas.Operation_quota_exceeded is instead returned.