mercurial-scm/hg: mercurial/policy.py annotate

annotate mercurial/policy.py @ 52049:af54626bf358

dirstate-map: add a missing debug wait point when accessing the v2 docket fc8e37c380d3 added synchronization points to the dirstate to allow for race condition testing without actually requiring a time-based race condition to happen. This changes adds the `pre-read-file` wait point before we read the docket, since callers might ask for the parents before anything else is read, leading to the first read being done before the wait point. This removes some differences in test output which were presumed to be speed related, but weren't.

author	Rapha?l Gom?s <rgomes@octobus.net>
date	Mon, 14 Oct 2024 14:14:21 +0200
parents	5e2f0fec0a47
children	6673cec8605c

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
51859 f4733654f144 typing: add `from __future__ import annotations` to most files Matt Harbison <matt_harbison@yahoo.com> parents: 51727 diff changeset	8 from __future__ import annotations
29266 b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	9
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	10 import os
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	11 import sys
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	12 import typing
a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	13
a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	14 if typing.TYPE_CHECKING:
a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	15 from typing import (
a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	16 Dict,
a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	17 Optional,
a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	18 Tuple,
a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	19 )
29266 b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	20
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	21 # Rules for how modules can be loaded. Values are:
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	22 #
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	23 # c - require C extensions
42451 810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	24 # rust+c - require Rust and C extensions
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	25 # 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	26 # for each
29266 b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	27 # 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	28 # cffi - required cffi versions (implemented within pure module)
b4d117cee636 policy: add cffi policy for PyPy Maciej Fijalkowski <fijall@gmail.com> parents: 29266 diff changeset	29 # cffi-allow - allow pure Python implementation if cffi version is missing
29266 b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	30 # py - only load pure Python modules
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	31 #
32251 a04f5c651e52 policy: relax the default for in-place build Yuya Nishihara <yuya@tcha.org> parents: 32210 diff changeset	32 # 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	33 # 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	34 # __modulepolicy__ generated by setup.py.
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	35 policy: bytes = b'allow'
a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	36 _packageprefs: "Dict[bytes, Tuple[Optional[str], Optional[str]]]" = {
32366 8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	37 # 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	38 b'c': ('cext', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	39 b'allow': ('cext', 'pure'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	40 b'cffi': ('cffi', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	41 b'cffi-allow': ('cffi', 'pure'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	42 b'py': (None, 'pure'),
42451 810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	43 # 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	44 b'rust+c': ('cext', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	45 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	46 }
29490 b4d117cee636 policy: add cffi policy for PyPy Maciej Fijalkowski <fijall@gmail.com> parents: 29266 diff changeset	47
29266 b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	48 try:
51727 92845af308b4 typing: narrow the scope of some recent disabled import warnings Matt Harbison <matt_harbison@yahoo.com> parents: 51720 diff changeset	49 from . import __modulepolicy__ # pytype: disable=import-error
43075 57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	50
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	51 policy: bytes = __modulepolicy__.modulepolicy
29266 b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	52 except ImportError:
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	53 pass
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	54
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	55 # PyPy doesn't load C extensions.
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	56 #
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	57 # The canonical way to do this is to test platform.python_implementation().
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	58 # 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	59 if '__pypy__' in sys.builtin_module_names:
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	60 policy: bytes = b'cffi'
29266 b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	61
b3a677c82a35 debuginstall: expose modulepolicy timeless <timeless@mozdev.org> parents: diff changeset	62 # Environment variable can always force settings.
51953 f3bef5eb12f9 module-policy: ignore empty module policy Pierre-Yves David <pierre-yves.david@octobus.net> parents: 50926 diff changeset	63 if os.environ.get('HGMODULEPOLICY'): # ignore None and Empty
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	64 policy: bytes = 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	65
43075 57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	66
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	67 def _importfrom(pkgname: str, modname: str):
32366 8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	68 # 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	69 fakelocals = {}
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	70 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	71 try:
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	72 fakelocals[modname] = mod = getattr(pkg, modname)
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	73 except AttributeError:
43506 9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	74 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	75 # 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	76 getattr(mod, '__doc__', None)
32366 8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	77 return fakelocals[modname]
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	78
43075 57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	79
32428 28b773aa3ff2 policy: define C module versions individually Jun Wu <quark@fb.com> parents: 32366 diff changeset	80 # keep in sync with "version" in C modules
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	81 _cextversions: "Dict[Tuple[str, str], int]" = {
43506 9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	82 ('cext', 'base85'): 1,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	83 ('cext', 'bdiff'): 3,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	84 ('cext', 'mpatch'): 1,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	85 ('cext', 'osutil'): 4,
49820 3eac92509484 dirstate-entry: add `modified` property Rapha?l Gom?s <rgomes@octobus.net> parents: 48938 diff changeset	86 ('cext', 'parsers'): 21,
32428 28b773aa3ff2 policy: define C module versions individually Jun Wu <quark@fb.com> parents: 32366 diff changeset	87 }
28b773aa3ff2 policy: define C module versions individually Jun Wu <quark@fb.com> parents: 32366 diff changeset	88
33760 cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	89 # map import request to other package or module
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	90 _modredirects: "Dict[Tuple[str, str], Tuple[str, str]]" = {
43506 9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	91 ('cext', 'charencode'): ('cext', 'parsers'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	92 ('cffi', 'base85'): ('pure', 'base85'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	93 ('cffi', 'charencode'): ('pure', 'charencode'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	94 ('cffi', 'parsers'): ('pure', 'parsers'),
33760 cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	95 }
cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	96
43075 57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	97
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	98 def _checkmod(pkgname: str, modname: str, mod) -> None:
32511 2e431fb98c6b policy: extend API version checks for cffi Yuya Nishihara <yuya@tcha.org> parents: 32428 diff changeset	99 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	100 actual = getattr(mod, 'version', None)
32366 8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	101 if actual != expected:
43075 57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	102 raise ImportError(
43506 9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	103 'cannot import module %s.%s '
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	104 '(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	105 % (pkgname, modname, expected, actual)
57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	106 )
57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	107
32366 8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	108
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	109 def importmod(modname: str):
32366 8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	110 """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	111 try:
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	112 verpkg, purepkg = _packageprefs[policy]
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	113 except KeyError:
43506 9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	114 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	115 assert verpkg or purepkg
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	116 if verpkg:
33760 cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	117 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	118 try:
33760 cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	119 mod = _importfrom(pn, mn)
cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	120 if pn == verpkg:
cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	121 _checkmod(pn, mn, mod)
32366 8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	122 return mod
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	123 except ImportError:
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	124 if not purepkg:
8e0327dae3f4 policy: add helper to import cext/pure module Yuya Nishihara <yuya@tcha.org> parents: 32251 diff changeset	125 raise
33760 cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	126 pn, mn = _modredirects.get((purepkg, modname), (purepkg, modname))
cd2aca0808f8 policy: reroute proxy modules internally Yuya Nishihara <yuya@tcha.org> parents: 32514 diff changeset	127 return _importfrom(pn, mn)
42451 810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	128
43075 57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	129
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	130 def _isrustpermissive() -> bool:
42451 810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	131 """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	132 return policy.endswith(b'-allow')
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	133
43075 57875cf423c9 style: run a patched black on a subset of mercurial Augie Fackler <augie@google.com> parents: 42451 diff changeset	134
51720 a3dc962cac62 typing: add type hints to `mercurial.policy` Matt Harbison <matt_harbison@yahoo.com> parents: 51698 diff changeset	135 def importrust(modname: str, member: "Optional[str]" = None, default=None):
42451 810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	136 """Import Rust module according to policy and availability.
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	137
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	138 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	139
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	140 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	141 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	142 """
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	143 if not policy.startswith(b'rust'):
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	144 return default
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	145
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	146 try:
43506 9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings Augie Fackler <augie@google.com> parents: 43503 diff changeset	147 mod = _importfrom('rustext', modname)
42451 810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	148 except ImportError:
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	149 if _isrustpermissive():
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	150 return default
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	151 raise
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	152 if member is None:
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	153 return mod
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	154
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	155 try:
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	156 return getattr(mod, member)
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	157 except AttributeError:
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	158 if _isrustpermissive():
810f66b468cd rust: module policy with importrust Georges Racinet <georges.racinet@octobus.net> parents: 42343 diff changeset	159 return default
43503 313e3a279828 cleanup: remove pointless r-prefixes on double-quoted strings Augie Fackler <augie@google.com> parents: 43103 diff changeset	160 raise ImportError("Cannot import name %s" % member)

Mercurial > public > mercurial-scm > hg

annotate mercurial/policy.py @ 52049:af54626bf358