|
|
#!/usr/bin/env python
|
|
|
#
|
|
|
# check-py3-compat - check Python 3 compatibility of Mercurial files
|
|
|
#
|
|
|
# Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com>
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
|
|
from __future__ import absolute_import, print_function
|
|
|
|
|
|
import ast
|
|
|
import imp
|
|
|
import os
|
|
|
import sys
|
|
|
import traceback
|
|
|
|
|
|
def check_compat_py2(f):
|
|
|
"""Check Python 3 compatibility for a file with Python 2"""
|
|
|
with open(f, 'rb') as fh:
|
|
|
content = fh.read()
|
|
|
root = ast.parse(content)
|
|
|
|
|
|
# Ignore empty files.
|
|
|
if not root.body:
|
|
|
return
|
|
|
|
|
|
futures = set()
|
|
|
haveprint = False
|
|
|
for node in ast.walk(root):
|
|
|
if isinstance(node, ast.ImportFrom):
|
|
|
if node.module == '__future__':
|
|
|
futures |= set(n.name for n in node.names)
|
|
|
elif isinstance(node, ast.Print):
|
|
|
haveprint = True
|
|
|
|
|
|
if 'absolute_import' not in futures:
|
|
|
print('%s not using absolute_import' % f)
|
|
|
if haveprint and 'print_function' not in futures:
|
|
|
print('%s requires print_function' % f)
|
|
|
|
|
|
def check_compat_py3(f):
|
|
|
"""Check Python 3 compatibility of a file with Python 3."""
|
|
|
with open(f, 'rb') as fh:
|
|
|
content = fh.read()
|
|
|
|
|
|
try:
|
|
|
ast.parse(content)
|
|
|
except SyntaxError as e:
|
|
|
print('%s: invalid syntax: %s' % (f, e))
|
|
|
return
|
|
|
|
|
|
# Try to import the module.
|
|
|
# For now we only support mercurial.* and hgext.* modules because figuring
|
|
|
# out module paths for things not in a package can be confusing.
|
|
|
if f.startswith(('hgext/', 'mercurial/')) and not f.endswith('__init__.py'):
|
|
|
assert f.endswith('.py')
|
|
|
name = f.replace('/', '.')[:-3]
|
|
|
with open(f, 'r') as fh:
|
|
|
try:
|
|
|
imp.load_module(name, fh, '', ('py', 'r', imp.PY_SOURCE))
|
|
|
except Exception as e:
|
|
|
exc_type, exc_value, tb = sys.exc_info()
|
|
|
frame = traceback.extract_tb(tb)[-1]
|
|
|
|
|
|
if frame.filename:
|
|
|
filename = os.path.basename(frame.filename)
|
|
|
print('%s: error importing: <%s> %s (error at %s:%d)' % (
|
|
|
f, type(e).__name__, e, filename, frame.lineno))
|
|
|
else:
|
|
|
print('%s: error importing module: <%s> %s (line %d)' % (
|
|
|
f, type(e).__name__, e, frame.lineno))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
if sys.version_info[0] == 2:
|
|
|
fn = check_compat_py2
|
|
|
else:
|
|
|
fn = check_compat_py3
|
|
|
|
|
|
for f in sys.argv[1:]:
|
|
|
fn(f)
|
|
|
|
|
|
sys.exit(0)
|
|
|
|
