Mercurial > hg
annotate contrib/check-py3-compat.py @ 51151:2705748ba166 stable
perf-tags: fix the --clear-fnode-cache-rev code
It seems like this code never run?
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Sun, 03 Dec 2023 04:43:08 +0100 |
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1 #!/usr/bin/env python3 |
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2 # |
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3 # check-py3-compat - check Python 3 compatibility of Mercurial files |
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4 # |
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5 # Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com> |
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6 # |
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7 # This software may be used and distributed according to the terms of the |
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8 # GNU General Public License version 2 or any later version. |
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9 |
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10 |
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11 import ast |
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12 import importlib |
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13 import os |
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14 import sys |
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15 import traceback |
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16 import warnings |
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17 |
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18 |
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19 def check_compat_py3(f): |
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20 """Check Python 3 compatibility of a file with Python 3.""" |
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21 with open(f, 'rb') as fh: |
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22 content = fh.read() |
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23 |
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24 try: |
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25 ast.parse(content, filename=f) |
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26 except SyntaxError as e: |
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27 print('%s: invalid syntax: %s' % (f, e)) |
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28 return |
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29 |
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30 # Try to import the module. |
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31 # For now we only support modules in packages because figuring out module |
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32 # paths for things not in a package can be confusing. |
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33 if f.startswith( |
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34 ('hgdemandimport/', 'hgext/', 'mercurial/') |
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35 ) and not f.endswith('__init__.py'): |
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36 assert f.endswith('.py') |
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37 name = f.replace('/', '.')[:-3] |
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38 try: |
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39 importlib.import_module(name) |
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40 except Exception as e: |
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41 exc_type, exc_value, tb = sys.exc_info() |
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42 # We walk the stack and ignore frames from our custom importer, |
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43 # import mechanisms, and stdlib modules. This kinda/sorta |
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44 # emulates CPython behavior in import.c while also attempting |
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45 # to pin blame on a Mercurial file. |
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46 for frame in reversed(traceback.extract_tb(tb)): |
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47 if frame.name == '_call_with_frames_removed': |
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48 continue |
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49 if 'importlib' in frame.filename: |
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50 continue |
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51 if 'mercurial/__init__.py' in frame.filename: |
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52 continue |
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53 if frame.filename.startswith(sys.prefix): |
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54 continue |
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55 break |
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56 |
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57 if frame.filename: |
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58 filename = os.path.basename(frame.filename) |
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59 print( |
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60 '%s: error importing: <%s> %s (error at %s:%d)' |
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61 % (f, type(e).__name__, e, filename, frame.lineno) |
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62 ) |
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63 else: |
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64 print( |
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65 '%s: error importing module: <%s> %s (line %d)' |
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66 % (f, type(e).__name__, e, frame.lineno) |
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67 ) |
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68 |
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69 |
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70 if __name__ == '__main__': |
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71 # check_compat_py3 will import every filename we specify as long as it |
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72 # starts with one of a few prefixes. It does this by converting |
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73 # specified filenames like 'mercurial/foo.py' to 'mercurial.foo' and |
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74 # importing that. When running standalone (not as part of a test), this |
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75 # means we actually import the installed versions, not the files we just |
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76 # specified. When running as test-check-py3-compat.t, we technically |
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77 # would import the correct paths, but it's cleaner to have both cases |
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78 # use the same import logic. |
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80 |
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81 for f in sys.argv[1:]: |
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82 with warnings.catch_warnings(record=True) as warns: |
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83 check_compat_py3(f) |
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84 |
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85 for w in warns: |
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86 print( |
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87 warnings.formatwarning( |
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88 w.message, w.category, w.filename, w.lineno |
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89 ).rstrip() |
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90 ) |
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91 |
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92 sys.exit(0) |