ethereum.forks.paris.vm.precompiled_contracts.identity

Ethereum Virtual Machine (EVM) IDENTITY PRECOMPILED CONTRACT.

.. contents:: Table of Contents :backlinks: none :local:

Introduction

Implementation of the IDENTITY precompiled contract.

identity

Writes the message data to output.

Parameters

evm : The current EVM frame.

def identity(​evm: Evm​) -> None:
23
    """
24
    Writes the message data to output.
25
26
    Parameters
27
    ----------
28
    evm :
29
        The current EVM frame.
30
31
    """
32
    data = evm.message.data
33
34
    # GAS
35
    word_count = ceil32(Uint(len(data))) // Uint(32)
36
    charge_gas(evm, GAS_IDENTITY + GAS_IDENTITY_WORD * word_count)
37
38
    # OPERATION
39
    evm.output = data