debugpy/tests/code.py
2019-07-09 12:01:13 -07:00

40 lines
1 KiB
Python

# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See LICENSE in the project root
# for license information.
from __future__ import absolute_import, print_function, unicode_literals
"""Helpers to work with Python code.
"""
import py.path
import re
from ptvsd.common import compat
def get_marked_line_numbers(path):
"""Given a path to a Python source file, extracts line numbers for all lines
that are marked with #@. For example, given this file::
print(1) # @foo
print(2)
print(3) # @bar
the function will return::
{"foo": 1, "bar": 3}
"""
if isinstance(path, py.path.local):
path = path.strpath
# Read as bytes, to avoid decoding errors on Python 3.
with open(path, "rb") as f:
lines = {}
for i, line in enumerate(f):
match = re.search(br"#\s*@\s*(.+?)\s*$", line)
if match:
marker = compat.force_unicode(match.group(1), "ascii")
lines[marker] = i + 1
return lines