annotate mercurial/policy.py @ 49169:06107198f95b

wix: drop python2 conditionals Differential Revision: https://phab.mercurial-scm.org/D12595
author Matt Harbison <matt_harbison@yahoo.com>
date Thu, 28 Apr 2022 11:01:41 -0400
parents f98da1349212
children 3eac92509484
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
1 # policy.py - module policy logic for Mercurial.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
2 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
3 # Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com>
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
4 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
5 # This software may be used and distributed according to the terms of the
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
6 # GNU General Public License version 2 or any later version.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
7
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
8
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
9 import os
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
10 import sys
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
11
43089
c59eb1560c44 py3: manually import getattr where it is needed
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43075
diff changeset
12 from .pycompat import getattr
c59eb1560c44 py3: manually import getattr where it is needed
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43075
diff changeset
13
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
14 # Rules for how modules can be loaded. Values are:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
15 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
16 # c - require C extensions
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
17 # rust+c - require Rust and C extensions
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
18 # rust+c-allow - allow Rust and C extensions with fallback to pure Python
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
19 # for each
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
20 # allow - allow pure Python implementation when C loading fails
29490
b4d117cee636 policy: add cffi policy for PyPy
Maciej Fijalkowski <fijall@gmail.com>
parents: 29266
diff changeset
21 # cffi - required cffi versions (implemented within pure module)
b4d117cee636 policy: add cffi policy for PyPy
Maciej Fijalkowski <fijall@gmail.com>
parents: 29266
diff changeset
22 # cffi-allow - allow pure Python implementation if cffi version is missing
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
23 # py - only load pure Python modules
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
24 #
32251
a04f5c651e52 policy: relax the default for in-place build
Yuya Nishihara <yuya@tcha.org>
parents: 32210
diff changeset
25 # By default, fall back to the pure modules so the in-place build can
a04f5c651e52 policy: relax the default for in-place build
Yuya Nishihara <yuya@tcha.org>
parents: 32210
diff changeset
26 # run without recompiling the C extensions. This will be overridden by
a04f5c651e52 policy: relax the default for in-place build
Yuya Nishihara <yuya@tcha.org>
parents: 32210
diff changeset
27 # __modulepolicy__ generated by setup.py.
a04f5c651e52 policy: relax the default for in-place build
Yuya Nishihara <yuya@tcha.org>
parents: 32210
diff changeset
28 policy = b'allow'
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
29 _packageprefs = {
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
30 # policy: (versioned package, pure package)
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
31 b'c': ('cext', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
32 b'allow': ('cext', 'pure'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
33 b'cffi': ('cffi', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
34 b'cffi-allow': ('cffi', 'pure'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
35 b'py': (None, 'pure'),
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
36 # For now, rust policies impact importrust only
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
37 b'rust+c': ('cext', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
38 b'rust+c-allow': ('cext', 'pure'),
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
39 }
29490
b4d117cee636 policy: add cffi policy for PyPy
Maciej Fijalkowski <fijall@gmail.com>
parents: 29266
diff changeset
40
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
41 try:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
42 from . import __modulepolicy__
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
43
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
44 policy = __modulepolicy__.modulepolicy
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
45 except ImportError:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
46 pass
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
47
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
48 # PyPy doesn't load C extensions.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
49 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
50 # The canonical way to do this is to test platform.python_implementation().
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
51 # But we don't import platform and don't bloat for it here.
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
52 if '__pypy__' in sys.builtin_module_names:
32210
56148133ef36 policy: mark all string literals as sysstr or bytes
Yuya Nishihara <yuya@tcha.org>
parents: 31361
diff changeset
53 policy = b'cffi'
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
54
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
55 # Environment variable can always force settings.
48938
f98da1349212 policy: remove Python 2.7 compatibility code
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48875
diff changeset
56 if 'HGMODULEPOLICY' in os.environ:
f98da1349212 policy: remove Python 2.7 compatibility code
Gregory Szorc <gregory.szorc@gmail.com>
parents: 48875
diff changeset
57 policy = os.environ['HGMODULEPOLICY'].encode('utf-8')
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
58
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
59
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
60 def _importfrom(pkgname, modname):
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
61 # from .<pkgname> import <modname> (where . is looked through this module)
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
62 fakelocals = {}
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
63 pkg = __import__(pkgname, globals(), fakelocals, [modname], level=1)
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
64 try:
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
65 fakelocals[modname] = mod = getattr(pkg, modname)
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
66 except AttributeError:
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
67 raise ImportError('cannot import name %s' % modname)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
68 # force import; fakelocals[modname] may be replaced with the real module
43103
c95b2f40db7c py3: stop normalizing 2nd argument of *attr() to unicode
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43089
diff changeset
69 getattr(mod, '__doc__', None)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
70 return fakelocals[modname]
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
71
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
72
32428
28b773aa3ff2 policy: define C module versions individually
Jun Wu <quark@fb.com>
parents: 32366
diff changeset
73 # keep in sync with "version" in C modules
28b773aa3ff2 policy: define C module versions individually
Jun Wu <quark@fb.com>
parents: 32366
diff changeset
74 _cextversions = {
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
75 ('cext', 'base85'): 1,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
76 ('cext', 'bdiff'): 3,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
77 ('cext', 'mpatch'): 1,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
78 ('cext', 'osutil'): 4,
47268
9d1a8829f959 revlog: signal which revlog index are compatible with Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 47249
diff changeset
79 ('cext', 'parsers'): 20,
32428
28b773aa3ff2 policy: define C module versions individually
Jun Wu <quark@fb.com>
parents: 32366
diff changeset
80 }
28b773aa3ff2 policy: define C module versions individually
Jun Wu <quark@fb.com>
parents: 32366
diff changeset
81
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
82 # map import request to other package or module
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
83 _modredirects = {
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
84 ('cext', 'charencode'): ('cext', 'parsers'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
85 ('cffi', 'base85'): ('pure', 'base85'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
86 ('cffi', 'charencode'): ('pure', 'charencode'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
87 ('cffi', 'parsers'): ('pure', 'parsers'),
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
88 }
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
89
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
90
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
91 def _checkmod(pkgname, modname, mod):
32511
2e431fb98c6b policy: extend API version checks for cffi
Yuya Nishihara <yuya@tcha.org>
parents: 32428
diff changeset
92 expected = _cextversions.get((pkgname, modname))
43103
c95b2f40db7c py3: stop normalizing 2nd argument of *attr() to unicode
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43089
diff changeset
93 actual = getattr(mod, 'version', None)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
94 if actual != expected:
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
95 raise ImportError(
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
96 'cannot import module %s.%s '
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
97 '(expected version: %d, actual: %r)'
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
98 % (pkgname, modname, expected, actual)
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
99 )
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
100
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
101
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
102 def importmod(modname):
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
103 """Import module according to policy and check API version"""
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
104 try:
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
105 verpkg, purepkg = _packageprefs[policy]
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
106 except KeyError:
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
107 raise ImportError('invalid HGMODULEPOLICY %r' % policy)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
108 assert verpkg or purepkg
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
109 if verpkg:
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
110 pn, mn = _modredirects.get((verpkg, modname), (verpkg, modname))
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
111 try:
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
112 mod = _importfrom(pn, mn)
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
113 if pn == verpkg:
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
114 _checkmod(pn, mn, mod)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
115 return mod
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
116 except ImportError:
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
117 if not purepkg:
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
118 raise
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
119 pn, mn = _modredirects.get((purepkg, modname), (purepkg, modname))
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
120 return _importfrom(pn, mn)
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
121
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
122
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
123 def _isrustpermissive():
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
124 """Assuming the policy is a Rust one, tell if it's permissive."""
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
125 return policy.endswith(b'-allow')
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
126
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
127
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
128 def importrust(modname, member=None, default=None):
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
129 """Import Rust module according to policy and availability.
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
130
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
131 If policy isn't a Rust one, this returns `default`.
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
132
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
133 If either the module or its member is not available, this returns `default`
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
134 if policy is permissive and raises `ImportError` if not.
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
135 """
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
136 if not policy.startswith(b'rust'):
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
137 return default
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
138
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
139 try:
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
140 mod = _importfrom('rustext', modname)
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
141 except ImportError:
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
142 if _isrustpermissive():
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
143 return default
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
144 raise
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
145 if member is None:
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
146 return mod
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
147
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
148 try:
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
149 return getattr(mod, member)
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
150 except AttributeError:
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
151 if _isrustpermissive():
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
152 return default
43503
313e3a279828 cleanup: remove pointless r-prefixes on double-quoted strings
Augie Fackler <augie@google.com>
parents: 43103
diff changeset
153 raise ImportError("Cannot import name %s" % member)