Static Analyzer for Solidity
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slither/utils/upgradability/compare_variables_order.py

51 lines
1.9 KiB

'''
Check if the variables respect the same ordering
'''
import logging
from slither import Slither
from slither.utils.function import get_function_id
from slither.utils.colors import red, green
logger = logging.getLogger("VariablesOrder")
logger.setLevel(logging.INFO)
def compare_variables_order(v1, contract_name1, v2, contract_name2):
contract_v1 = v1.get_contract_from_name(contract_name1)
if contract_v1 is None:
logger.info(red('Contract {} not found'.format(contract_name1)))
exit(-1)
contract_v2 = v2.get_contract_from_name(contract_name2)
if contract_v2 is None:
logger.info(red('Contract {} not found'.format(contract_name2)))
exit(-1)
order_v1 = [(variable.name, variable.type) for variable in contract_v1.state_variables if not variable.is_constant]
order_v2 = [(variable.name, variable.type) for variable in contract_v2.state_variables if not variable.is_constant]
found = False
for idx in range(0, len(order_v1)):
(v1_name, v1_type) = order_v1[idx]
if len(order_v2) < idx:
logger.info(red('Missing variable in the new version: {} {}'.format(v1_name, v1_type)))
continue
(v2_name, v2_type) = order_v2[idx]
if (v1_name != v2_name) or (v1_type != v2_type):
found = True
logger.info(red('Different variable: {} {} -> {} {}'.format(v1_name,
v1_type,
v2_name,
v2_type)))
if len(order_v2) > len(order_v1):
new_variables = order_v2[len(order_v1):]
for (name, t) in new_variables:
logger.info(green('New variable: {} {}'.format(name, t)))
if not found:
logger.info(green('No error found'))