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- """MyPy support.
- TODO: Error codes
- """
- from __future__ import annotations
- from mypy import api
- from pylama.context import RunContext
- from pylama.lint import LinterV2 as Abstract
- class Linter(Abstract):
- """MyPy runner."""
- name = "mypy"
- def run_check(self, ctx: RunContext):
- """Check code with mypy."""
- # Support stdin
- args = [ctx.temp_filename, "--follow-imports=skip", "--show-column-numbers"]
- stdout, _, _ = api.run(args) # noqa
- for line in stdout.splitlines():
- if not line:
- continue
- message = _MyPyMessage(line)
- if message.valid:
- ctx.push(
- source="mypy",
- lnum=message.line_num,
- col=message.column,
- text=message.text,
- type=message.types.get(message.message_type.strip(), "W"),
- )
- class _MyPyMessage:
- """Parser for a single MyPy output line."""
- types = {"error": "E", "warning": "W", "note": "N"}
- valid = False
- def __init__(self, line):
- self.filename = None
- self.line_num = None
- self.column = None
- try:
- result = line.split(":", maxsplit=4)
- self.filename, line_num_txt, column_txt, self.message_type, text = result
- except ValueError:
- return
- try:
- self.line_num = int(line_num_txt.strip())
- self.column = int(column_txt.strip())
- except ValueError:
- return
- self.text = text.strip()
- self.valid = True
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