mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-30 03:18:20 +00:00
43677c6afd
The static replacer doesn't understand tuples (it's just a dumb sed, we'd need to teach it the python ast which is a somewhat bigger project that would also make the build slower) so instead we spell out every "utils.INTERNAL_MODEL == xyz" equality check separately. If you don't, you don't get static replacement and you're checking at run-time in every firmware for every device. This pylint will catch the problem.
74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
from astroid import nodes
|
|
from pylint.checkers import BaseChecker
|
|
from pylint.checkers.utils import check_messages
|
|
from pylint.interfaces import IAstroidChecker
|
|
|
|
|
|
class AsyncAwaitableChecker(BaseChecker):
|
|
__implements__ = IAstroidChecker
|
|
|
|
name = "async-awaitable-checker"
|
|
priority = -1
|
|
msgs = {
|
|
"W9999": (
|
|
'Async function "%s" is likely not meant to return an Awaitable.',
|
|
"async-awaitable-return",
|
|
"Used when an async function returns an Awaitable instead of the result.",
|
|
),
|
|
}
|
|
|
|
@check_messages("async-awaitable-return")
|
|
def visit_asyncfunctiondef(self, node: nodes.AsyncFunctionDef):
|
|
# Check if the return type is explicitly an Awaitable
|
|
if node.returns and "Awaitable" in node.returns.as_string():
|
|
self.add_message("async-awaitable-return", node=node, args=(node.name,))
|
|
|
|
|
|
class InternalModelComparisonChecker(BaseChecker):
|
|
"""Check that utils.INTERNAL_MODEL is only compared using '==' or '!='.
|
|
|
|
This is because the static replacer does not support 'in' or 'not in' comparisons,
|
|
so the comparison is compiled into all models and performed at runtime. This is
|
|
typically not what you want.
|
|
|
|
When multiple comparisons are necessary, you may need to silence another
|
|
pylint warning: # pylint: disable=consider-using-in
|
|
"""
|
|
|
|
__implements__ = IAstroidChecker
|
|
|
|
name = "internal-model-comparison-checker"
|
|
priority = -1
|
|
msgs = {
|
|
"W9998": (
|
|
"Only compare INTERNAL_MODEL using '==' or '!='.",
|
|
"internal-model-tuple-comparison",
|
|
"Used when utils.INTERNAL_MODEL is compared using 'in' or 'not in' with a tuple.",
|
|
),
|
|
}
|
|
|
|
@staticmethod
|
|
def _is_internal_model(node):
|
|
return (
|
|
isinstance(node, nodes.Attribute)
|
|
and node.attrname == "INTERNAL_MODEL"
|
|
and isinstance(node.expr, nodes.Name)
|
|
and node.expr.name == "utils"
|
|
)
|
|
|
|
@check_messages("internal-model-tuple-comparison")
|
|
def visit_compare(self, node: nodes.Compare):
|
|
if not self._is_internal_model(node.left):
|
|
return
|
|
if len(node.ops) != 1:
|
|
return
|
|
op, _right = node.ops[0]
|
|
if op in ("in", "not in"):
|
|
self.add_message("internal-model-tuple-comparison", node=node)
|
|
|
|
|
|
def register(linter):
|
|
"""Required method to auto register this checker."""
|
|
linter.register_checker(AsyncAwaitableChecker(linter))
|
|
linter.register_checker(InternalModelComparisonChecker(linter))
|