Mercurial > hg
view contrib/check-py3-compat.py @ 29354:af849596752c
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author | liscju <piotr.listkiewicz@gmail.com> |
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date | Mon, 13 Jun 2016 23:50:26 +0200 |
parents | d69172ddfdca |
children | 1c22400db72d |
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#!/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)