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"""Stuff for Python version compatibility.
"""
import warnings
from typing import Any, Callable
from sphinx.deprecation import RemovedInSphinx60Warning
# ------------------------------------------------------------------------------
# Python 2/3 compatibility
# convert_with_2to3():
# support for running 2to3 over config files
def convert_with_2to3(filepath: str) -> str:
warnings.warn('convert_with_2to3() is deprecated',
RemovedInSphinx60Warning, stacklevel=2)
try:
from lib2to3.pgen2.parse import ParseError
from lib2to3.refactor import RefactoringTool, get_fixers_from_package
except ImportError as exc:
# python 3.9.0a6+ emits PendingDeprecationWarning for lib2to3.
# Additionally, removal of the module is still discussed at PEP-594.
# To support future python, this catches ImportError for lib2to3.
raise SyntaxError from exc
fixers = get_fixers_from_package('lib2to3.fixes')
refactoring_tool = RefactoringTool(fixers)
source = refactoring_tool._read_python_source(filepath)[0]
try:
tree = refactoring_tool.refactor_string(source, 'conf.py')
except ParseError as err:
# do not propagate lib2to3 exceptions
lineno, offset = err.context[1]
# try to match ParseError details with SyntaxError details
raise SyntaxError(err.msg, (filepath, lineno, offset, err.value)) from err
return str(tree)
def execfile_(filepath: str, _globals: Any, open: Callable = open) -> None:
warnings.warn('execfile_() is deprecated',
RemovedInSphinx60Warning, stacklevel=2)
from sphinx.util.osutil import fs_encoding
with open(filepath, 'rb') as f:
source = f.read()
# compile to a code object, handle syntax errors
filepath_enc = filepath.encode(fs_encoding)
code = compile(source, filepath_enc, 'exec')
exec(code, _globals)
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