o þâf. ã@srdZddlmZddlmZgd¢Zdd„Zdd„Zd d „Zd d „Z ddd„Z dd„Z dd„Z dd„Z dd„Zd S)zFunctional utilities.é)ÚThenable©Úpromise)Ú maybe_promiseÚensure_promiseÚppartialÚpreplaceÚ ready_promiseÚ starpromiseÚ transformÚwrapcCs|r t|tƒs t|ƒS|S)zBReturn None if p is undefined, otherwise make sure it's a promise.)Ú isinstancerr©Úp©rú@/var/www/html/venv/lib/python3.10/site-packages/vine/funtools.pyr s rcCs|durtƒSt|ƒS)zeEnsure p is a promise. If p is not a promise, a new promise is created with p' as callback. N)rrrrrrrsrcOs,t|ƒ}|r ||j|_|r|j |¡|S)z-Create/modify promise with partial arguments.)rÚargsÚkwargsÚupdate)rrrrrrrs   rcs‡‡‡fdd„}t|ƒS)z¸Replace 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. csˆˆiˆ¤ŽS©Nr)Ú_Ú__©rrrrrÚ _replacer/szpreplace.._replacerr)rrrrrrrr(srNcGst|ƒ}||Ž|S)z)Create promise that is already fulfilled.)r)Úcallbackrrrrrr 4sr cOs t|||ƒS)z%Create promise, using star arguments.r)Úfunrrrrrr ;s r cOs.t|ƒ}tt||||fƒ}| tƒ|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), ) )rrÚ _transbackÚthenÚthrow)Úfilter_rÚ filter_argsÚ filter_kwargsÚPrrrr @sr cCs<z|||fi|¤Ž}W||ƒSty| ¡YdSwr)Ú Exceptionr)rrrrÚretrrrr\s  ýÿrcs‡fdd„}|S)zžWrap promise. This wraps the promise such that if the promise is called with a promise as argument, we attach ourselves to that promise instead. cs6t|ƒdkrt|dtƒr|d ˆ¡Sˆ|i|¤ŽS)Nré)Úlenr rr)rrrrrÚon_callkszwrap..on_callr)rr'rrrr es r r)Ú__doc__ÚabstractrÚpromisesrÚ__all__rrrrr r r rr rrrrÚs