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Mini Shell
from multiprocessing import Process, Queue
from mypy import api
from prospector.message import Location, Message
from prospector.tools import ToolBase
__all__ = ("MypyTool",)
from prospector.tools.exceptions import BadToolConfig
LIST_OPTIONS = ["allow", "check", "disallow", "no-check", "no-warn", "warn"]
VALID_OPTIONS = LIST_OPTIONS + [
"use-dmypy",
"strict",
"follow-imports",
"ignore-missing-imports",
"implicit-optional",
"strict-optional",
"platform",
"python-2-mode",
"python-version",
"namespace-packages",
]
def format_message(message):
try:
(path, line, char, err_type, err_msg) = message.split(":", 4)
line = int(line)
character = int(char)
except ValueError:
try:
(path, line, err_type, err_msg) = message.split(":", 3)
line = int(line)
character = None
except ValueError:
(path, err_type, err_msg) = message.split(":", 2)
line = 0
character = None
location = Location(
path=path,
module=None,
function=None,
line=line,
character=character,
)
return Message(
source="mypy",
code=err_type.lstrip(" "),
location=location,
message=err_msg.lstrip(" "),
)
def _run_in_subprocess(q, cmd, paths):
"""
This function exists only to be called by multiprocessing.Process as using
lambda is forbidden
"""
q.put(cmd(paths))
class MypyTool(ToolBase):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.checker = api
self.options = ["--show-column-numbers", "--no-error-summary"]
self.use_dmypy = False
def configure(self, prospector_config, _):
options = prospector_config.tool_options("mypy")
for option_key in options.keys():
if option_key not in VALID_OPTIONS:
url = "https://github.com/PyCQA/prospector/blob/master/prospector/tools/mypy/__init__.py"
raise BadToolConfig(
"mypy", f"Option {option_key} is not valid. " f"See the list of possible options: {url}"
)
self.use_dmypy = options.get("use-dmypy", False)
strict = options.get("strict", False)
follow_imports = options.get("follow-imports", "normal")
ignore_missing_imports = options.get("ignore-missing-imports", False)
implict_optional = options.get("implict-optional", False)
platform = options.get("platform", None)
python_2_mode = options.get("python-2-mode", False)
python_version = options.get("python-version", None)
strict_optional = options.get("strict-optional", False)
namespace_packages = options.get("namespace-packages", False)
self.options.append(f"--follow-imports={follow_imports}")
if strict:
self.options.append("--strict")
if ignore_missing_imports:
self.options.append("--ignore-missing-imports")
if implict_optional:
self.options.append("--implict-optional")
if platform:
self.options.append(f"--platform {platform}")
if python_2_mode:
self.options.append("--py2")
if python_version:
self.options.append(f"--python-version {python_version}")
if strict_optional:
self.options.append("--strict-optional")
if namespace_packages:
self.options.append("--namespace-packages")
for list_option in LIST_OPTIONS:
for entry in options.get(list_option, []):
self.options.append(f"--{list_option}-{entry}")
def run(self, found_files):
paths = [str(path) for path in found_files.python_modules]
paths.extend(self.options)
if self.use_dmypy:
# Due to dmypy messing with stdout/stderr we call it in a separate
# process
q = Queue(1)
p = Process(target=_run_in_subprocess, args=(q, self.checker.run_dmypy, ["run", "--"] + paths))
p.start()
result = q.get()
p.join()
else:
result = self.checker.run(paths)
report, _ = result[0], result[1:] # noqa
return [format_message(message) for message in report.splitlines()]
Zerion Mini Shell 1.0