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� �]c @ s� d Z d d l Z y d d l m Z Wn e k rB d � Z n Xe j d k r] d d Un d d Uy e Wn e k r� d � Z n Xd d d g Z d Z d Z d e f d � � YZ d e f d � � YZ d � Z d S( s� Create objects that act as both context managers *and* as decorators, and behave the same in both cases. Context managers inheriting from ``ContextDecorator`` have to implement ``__enter__`` and ``__exit__`` as normal. ``__exit__`` retains its optional exception handling even when used as a decorator. Example:: from contextlib import ContextDecorator class mycontext(ContextDecorator): def __enter__(self): print 'Starting' return self def __exit__(self, *exc): print 'Finishing' return False @mycontext() def function(): print 'The bit in the middle' with mycontext(): print 'The bit in the middle' Existing context managers that already have a base class can be extended by using ``ContextDecorator`` as a mixin class:: from contextlib import ContextDecorator class mycontext(ContextBaseClass, ContextDecorator): def __enter__(self): return self def __exit__(self, *exc): return False i����N( t wrapsc s � f d � } | S( Nc s � j | _ | S( N( t __name__( t f( t original( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyt inner5 s ( ( R R ( ( R sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyR 4 s i i s+ def _reraise(cls, val, tb): raise val s4 def _reraise(cls, val, tb): raise cls, val, tb c C s | j � S( N( t next( t gen( ( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyR K s t __version__t ContextDecoratort contextmanagers 0.10.0c B s e Z d Z d � Z RS( sJ A base class or mixin that enables context managers to work as decorators.c s" t � � � � f d � � } | S( Nc sv � j � t } y � | | � } Wn t k rB t j � } n X� j | � } | rr | t k rr t | � n | S( N( t __enter__t _NO_EXCEPTIONt Exceptiont syst exc_infot __exit__t _reraise( t argst kwt exct resultt catch( R t self( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyR Y s ( R ( R R R ( ( R R sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyt __call__X s ( R t __module__t __doc__R ( ( ( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyR U s t GeneratorContextManagerc B s) e Z d Z d � Z d � Z d � Z RS( s% Helper for @contextmanager decorator.c C s | | _ d S( N( R ( R R ( ( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyt __init__o s c C s5 y t | j � SWn t k r0 t d � � n Xd S( Ns generator didn't yield( R R t StopIterationt RuntimeError( R ( ( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyR r s c C s� | d k rA y t | j � Wn t k r1 d SXt d � � n� | d k rY | � } n y& | j j | | | � t d � � WnJ t k r� t j � d } | | k St j � d | k r� � q� n Xd S( Ns generator didn't stops# generator didn't stop after throw()i ( t NoneR R R R t throwR R ( R t typet valuet tracebackR ( ( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyR x s" ( R R R R R R ( ( ( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyR l s c s t � � � f d � � } | S( s� @contextmanager decorator. Typical usage: @contextmanager def some_generator(<arguments>): <setup> try: yield <value> finally: <cleanup> This makes this: with some_generator(<arguments>) as <variable>: <body> equivalent to this: <setup> try: <variable> = <value> <body> finally: <cleanup> c s t � | | � � S( N( R ( R t kwds( t func( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyt helper� s ( R ( R$ R% ( ( R$ sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyR � s ( i i ( NNN( R R t functoolsR t ImportErrort version_infoR t NameErrort __all__R R R t objectR R R ( ( ( sS /opt/imh-python/lib/python2.7/site-packages/rads/implementation/contextdecorator.pyt <module>, s$ .
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