Mercurial > hg-stable
changeset 25327:2e7804110b14
demandimport: define a `deactivated` context manager
This can be useful for use in "with" blocks for temporarily disabling
demandimport.
| author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
|---|---|
| date | Thu, 28 May 2015 16:11:26 -0400 |
| parents | 238e5cd94bbc |
| children | 2cfb0bbf83a1 |
| files | mercurial/demandimport.py |
| diffstat | 1 files changed, 15 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/mercurial/demandimport.py Thu May 28 14:14:11 2015 -0400 +++ b/mercurial/demandimport.py Thu May 28 16:11:26 2015 -0400 @@ -25,6 +25,8 @@ ''' import __builtin__, os, sys +from contextlib import contextmanager + _origimport = __import__ nothing = object() @@ -179,3 +181,16 @@ def disable(): "disable global demand-loading of modules" __builtin__.__import__ = _origimport + +@contextmanager +def deactivated(): + "context manager for disabling demandimport in 'with' blocks" + demandenabled = isenabled() + if demandenabled: + disable() + + try: + yield + finally: + if demandenabled: + enable()