Source code for neo.SmartContract.ContractParameterType

    Contract Parameter Type in neo.Wallets
    from neo.SmartContract.ContractParameterType import ContractParameterType
from enum import Enum
import binascii

[docs]class ContractParameterType(Enum): """ Contract Parameter Types are used to denote different types of objects used in the VM Attributes: Signature: 00 Boolean: 01 Integer: 02 Hash160: 03 Hash256: 04 ByteArray: 05 PublicKey: 06 String: 07 Array: 10 InteropInterface: f0 Void: ff """ Signature = 0x00 Boolean = 0x01 Integer = 0x02 Hash160 = 0x03 Hash256 = 0x04 ByteArray = 0x05 PublicKey = 0x06 String = 0x07 Array = 0x10 InteropInterface = 0xf0 Void = 0xff def __str__(self): return @staticmethod def FromString(val): """ Create a ContractParameterType object from a str Args: val (str): the value to be converted to a ContractParameterType. val can be hex encoded (b'07'), int (7), string int ("7"), or string literal ("String") Returns: ContractParameterType """ # first, check if the value supplied is the string literal of the enum (e.g. "String") if isinstance(val, bytes): val = val.decode('utf-8') try: return ContractParameterType[val] except Exception as e: # ignore a KeyError if the val isn't found in the Enum pass # second, check if the value supplied is bytes or hex-encoded (e.g. b'07') try: if isinstance(val, (bytearray, bytes)): int_val = int.from_bytes(val, 'little') else: int_val = int.from_bytes(binascii.unhexlify(val), 'little') except (binascii.Error, TypeError) as e: # if it's not hex-encoded, then convert as int (e.g. "7" or 7) int_val = int(val) return ContractParameterType(int_val)
import inspect
[docs]def ToName(param_type): """ Gets the name of a ContractParameterType based on its value Args: param_type (ContractParameterType): type to get the name of Returns: str """ items = inspect.getmembers(ContractParameterType) if type(param_type) is bytes: param_type = int.from_bytes(param_type, 'little') for item in items: name = item[0] val = int(item[1].value) if val == param_type: return name return None