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Raises 'exc' if given flag is not equal to 'state'.
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Decorates a method excecuting pre and post methods around it.
Can be used to decorate the same method in different subclasses and takes
care that pre is executed only once at the first cooperative call and post
once at the end of the cooperative call-chain.
>>> entries = 0
>>> exits = 0
>>> def pre(*args, **kw): global entries; entries += 1
>>> def post(*args, **kw): global exits; exits += 1
>>> class A(object):
... @pre_post_wrapper(pre, post)
... def say_name(self, name):
... print name
>>> class B(A):
... @pre_post_wrapper(pre, post)
... def say_name(self, name):
... super(B, self).say_name(name)
... print name
>>> class C(B):
... @pre_post_wrapper(pre, post)
... def say_name(self, name):
... super(C, self).say_name(name)
... print name
>>> c = C()
>>> c.say_name('foo')
foo
foo
foo
>>> entries
1
>>> exits
1
A reentrant lock can be passed to syncronize the wrapped method. It is a
must if the instance is shared among several threads.
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CachedInspectc B s2 e Z d Z d Z d Z d Z d Z RS( s¢
In general "inspect" calls are extremely expensive. However, if we cache them
on an object by object basis, we should be able to speed things up a
c C s1 t i | _ t i | _ t i | _ d S( N( t weakreft WeakKeyDictionaryt functionst methodst argspec( R ( ( s0 /usr/lib/python2.6/site-packages/tw/core/util.pyt __init__ s c C sD | i i | d } | d j o t i | } | i | e Z d Z e d e d Z d d Z d Z d Z RS( s× A descriptor that proxies to tw.framework.request_local for
passing state among widgets in a thread-safe manner for the current request.
Do not abuse this or code can become increasingly unmantainable!
c C s3 | | _ | | _ | | _ | p d | | _ d S( sį Proxy to request local storage attribute named by ``name``.
If ``default`` is provided no AttributeError will be raised if attribute
does not exist ar request local storage when getting or deleting.
If ``qualify_with_id`` is True, the name is extended with the id() of the widget.
**Not** with the widget.id though!
This prevents the collapsing of namespaces for several forms on one page
being rendered after validation.
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t Enumc B s e Z d Z d Z d Z RS( s, Less strict Enum than the one provided by TGc G s x | D] } | | | >> string = "aaaabbbcc"
>>> replacer = MultipleReplacer({
... 'a+':lambda g, context: g + context['after_a'],
... 'b+':lambda g, context: g + context['after_b'],
... 'c+':lambda g, context: context['before_c'] + g,
... })
>>> replacer("aaaabbbcc", dict(
... after_a = "1",
... after_b = "2",
... before_c = "3"
... ))
'aaaa1bbb23cc'
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i c c s- t i | | | x | D] } | Vq Wd S( s Make an iterator that run warnings.warn(message, category, stacklevel)
right before the first value from iterator is returned.
N( t warningst warn( Rw t messaget categoryt
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RS(
s$ A dictionary-like object that stores a limited number of items, discarding
lesser used items periodically.
this is a rewrite of LRUCache from Myghty to use a periodic timestamp-based
paradigm so that synchronization is not really needed. the size management
is inexact.
t _Itemc B s e Z d Z d Z RS( c C s% | | _ | | _ t i | _ d S( N( Ro R t timet timestamp( R Ro R ( ( s0 /usr/lib/python2.6/site-packages/tw/core/util.pyRG Ų s c C s
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Disables runtime checks for possible programming errors regarding
modifying widget attributes once a widget has been initialized.
This option can significantly reduce Widget initialization time.
NOTE: This operation modifies the Widget class and will affect any
application using ToscaWidgets in the same process.
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