ó ù`]c@sÜdZddlmZdZdddgZddlZejZgejD]ZerKdekrKe^qKe_ddl Z ee_d „Z dd „Z d „Z d „Zd „Zd„Zd„Zed„ƒZdS(s Decorator module by Michele Simionato Copyright Michele Simionato, distributed under the terms of the BSD License (see below). http://www.phyast.pitt.edu/~micheles/python/documentation.html Included in NLTK for its support of a nice memoization decorator. iÿÿÿÿ(tprint_functionsrestructuredtext ent decoratort new_wrappertgetinfoNtnltkc CsPtj|ƒs$tj|ƒs$t‚tjddkrItj|ƒ}ntj|ƒ}|d \}}}}t|ƒ}|r|j |ƒn|r¦|j |ƒntj ||||dd„ƒdd!}t |dƒrò|j }|j } n|j}|j} td |jd |d |d |jd |jd|jd|jd| d|ƒ S(sg Returns an info dictionary containing: - name (the name of the function : str) - argnames (the names of the arguments : list) - defaults (the values of the default arguments : tuple) - signature (the signature : str) - doc (the docstring : str) - module (the module name : str) - dict (the function __dict__ : str) >>> def f(self, x=1, y=2, *args, **kw): pass >>> info = getinfo(f) >>> info["name"] 'f' >>> info["argnames"] ['self', 'x', 'y', 'args', 'kw'] >>> info["defaults"] (1, 2) >>> info["signature"] 'self, x, y, *args, **kw' iiit formatvaluecSsdS(Nt((tvalue((s.lib/python2.7/site-packages/nltk/decorators.pytDRiiÿÿÿÿt __closure__tnametargnamest signaturetdefaultstdoctmoduletdicttglobalstclosure(tinspecttismethodt isfunctiontAssertionErrortsyst version_infotgetfullargspect getargspectlisttappendt formatargspecthasattrR t __globals__t func_closuret func_globalsRt__name__t __defaults__t__doc__t __module__t__dict__( tfunctargspectregargstvarargst varkwargsR R R t_closuret_globals((s.lib/python2.7/site-packages/nltk/decorators.pyRs8$           cCsg|pt|ƒ}|d|_|d|_|d|_|jj|dƒ|d|_||_|S(NR RRRR (RR"R$R%R&tupdateR#t undecorated(twrappertmodeltinfodict((s.lib/python2.7/site-packages/nltk/decorators.pytupdate_wrapper]s     cCsrt|tƒr|}n t|ƒ}d|dks@tdƒ‚d|}t|td|ƒƒ}t|||ƒS(sA An improvement over functools.update_wrapper. The wrapper is a generic callable object. It works by generating a copy of the wrapper with the right signature and by updating the copy, not the original. Moreovoer, 'model' can be a dictionary with keys 'name', 'doc', 'module', 'dict', 'defaults'. t _wrapper_R s("_wrapper_" is a reserved argument name!s.lambda %(signature)s: _wrapper_(%(signature)s)(t isinstanceRRRtevalR3(R0R1R2tsrctfuncopy((s.lib/python2.7/site-packages/nltk/decorators.pyRhs    cst‡‡fd†ˆƒS(Ncsˆjˆ||ŽS(N(tcall(tatk(R'tself(s.lib/python2.7/site-packages/nltk/decorators.pyR~R(R(R<R'((R'R<s.lib/python2.7/site-packages/nltk/decorators.pyt__call__}scCsUtt|ƒƒ}d|kr-tdƒ‚nd|krHtdƒ‚nt|_|S(sí Take a class with a ``.caller`` method and return a callable decorator object. It works by adding a suitable __call__ method to the class; it raises a TypeError if the class already has a nontrivial __call__ method. R=s=You cannot decorate a class with a nontrivial __call__ methodR9s2You cannot decorate a class without a .call method(tsettdirt TypeErrorR=(tclstattrs((s.lib/python2.7/site-packages/nltk/decorators.pytdecorator_factorys    cs5tjˆƒrtˆƒS‡fd†}t|ˆƒS(sò General purpose decorator factory: takes a caller function as input and returns a decorator with the same attributes. A caller function is any function like this:: def caller(func, *args, **kw): # do something return func(*args, **kw) Here is an example of usage: >>> @decorator ... def chatty(f, *args, **kw): ... print("Calling %r" % f.__name__) ... return f(*args, **kw) >>> chatty.__name__ 'chatty' >>> @chatty ... def f(): pass ... >>> f() Calling 'f' decorator can also take in input a class with a .caller method; in this case it converts the class into a factory of callable decorator objects. See the documentation for an example. csst|ƒ}|d}d|kp+d|k s;tdƒ‚d|}t|td|dˆƒƒ}t|||ƒS(NR t_call_t_func_s2You cannot use _call_ or _func_ as argument names!s3lambda %(signature)s: _call_(_func_, %(signature)s)(RRR6RR3(R'R2R R7tdec_func(tcaller(s.lib/python2.7/site-packages/nltk/decorators.pyt _decorator´s    (RtisclassRCR3(RGRH((RGs.lib/python2.7/site-packages/nltk/decorators.pyR“s  cCsCyt||ƒSWn+tk r>|ƒ}t|||ƒ|SXdS(s'Similar to .setdefault in dictionaries.N(tgetattrtAttributeErrortsetattr(tobjR t default_thunktdefault((s.lib/python2.7/site-packages/nltk/decorators.pytgetattr_Âs   cGsDt|dtƒ}||kr&||S||Œ}|||<|SdS(Nt memoize_dic(RPR(R'targstdictresult((s.lib/python2.7/site-packages/nltk/decorators.pytmemoizeÌs    (R$t __future__Rt __docformat__t__all__Rtpatht old_sys_pathtpRRtNoneR3RR=RCRRPRU(((s.lib/python2.7/site-packages/nltk/decorators.pyts   1   ?    /