U.j. `dZddlmZddlmZgdZdZdZdZdZ dd Z d Z d Z d Z dZy )zFunctional utilities.)Thenablepromise) maybe_promiseensure_promiseppartialpreplace ready_promise starpromise transformwrapc@|rt|ts t|S|S)zBReturn None if p is undefined, otherwise make sure it's a promise.) isinstancerrps OC:\xampp\htdocs\tradingbinance\backend\.venv\Lib\site-packages\vine/funtools.pyrr s!X&1:  Hc0| tSt|S)zeEnsure p is a promise. If p is not a promise, a new promise is created with p' as callback. )rrrs rrrs  yy  rct|}|r||jz|_|r|jj||S)z-Create/modify promise with partial arguments.)rargskwargsupdate)rrrs rrrs6qA    Hrc,fd}t|S)zReplace promise arguments. This will force the promise to disregard any arguments the promise is fulfilled with, and to be called with the provided arguments instead. ciSN)___rrrs r _replacerzpreplace.._replacer/s$!&!!rr)rrrrs``` rr r (s" 9 rNc&t|}|||S)z)Create promise that is already fulfilled.)r)callbackrrs rr r 4sx AtH Hrct|||S)z%Create promise, using star arguments.r)funrrs rr r ;s 3f %%rct|}tt||||f}|jt|j|S)a?Filter final argument to a promise. E.g. to coerce callback argument to :class:`int`:: transform(int, callback) or a more complex example extracting something from a dict and coercing the value to :class:`float`: .. code-block:: python def filter_key_value(key, filter_, mapping): return filter_(mapping[key]) def get_page_expires(self, url, callback=None): return self.request( 'GET', url, callback=transform(get_key, callback, 'PageExpireValue', int), ) )rr _transbackthenthrow)filter_r! filter_args filter_kwargsPs rr r @s<,h'H Wh ]KLAFF79hnn% Hrcj |||fzi|}||S#t$r|jYywxYwr) Exceptionr')r(r!rrrets rr%r%\sCtsf}//} s 22cfd}|S)zWrap promise. This wraps the promise such that if the promise is called with a promise as argument, we attach ourselves to that promise instead. c~t|dk(r't|dtr|djS|i|S)Nr)lenrrr&)rrrs ron_callzwrap..on_callks= t9>ja':7<<? "d%f% %rr)rr3s` rr r es & Nrr)__doc__abstractrpromisesr__all__rrrr r r r r%r rrrr8sB     &  8 r