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use classmethod, more concise Functor.__call__ implementation

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This commit is contained in:
Darren Ranalli 2007-05-18 22:43:33 +00:00
parent a0f5059dc7
commit 33d2e386b8
1 changed files with 14 additions and 7 deletions
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21
direct/src/showbase/PythonUtil.py
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@ -875,6 +875,16 @@ def getSetter(targetObj, valueName, prefix='set'):
# getSetter(smiley, 'pos') -> smiley.setPos # getSetter(smiley, 'pos') -> smiley.setPos
return getattr(targetObj, getSetterName(valueName, prefix)) return getattr(targetObj, getSetterName(valueName, prefix))
"""
# with one integer positional arg, this uses about 4/5 of the memory of the Functor class below
def Functor(function, *args, **kArgs):
argsCopy = args[:]
def functor(*cArgs, **ckArgs):
kArgs.update(ckArgs)
return function(*(argsCopy + cArgs), **kArgs)
return functor
"""
class Functor: class Functor:
def __init__(self, function, *args, **kargs): def __init__(self, function, *args, **kargs):
assert callable(function), "function should be a callable obj" assert callable(function), "function should be a callable obj"
@ -892,11 +902,9 @@ class Functor:
del self.__doc__ del self.__doc__
def __call__(self, *args, **kargs): def __call__(self, *args, **kargs):
_args = list(self._args)
_args.extend(args)
_kargs = self._kargs.copy() _kargs = self._kargs.copy()
_kargs.update(kargs) _kargs.update(kargs)
return apply(self._function, _args, _kargs) return self._function(*(self._args + args), **_kargs)
def __repr__(self): def __repr__(self):
s = 'Functor(%s' % self._function.__name__ s = 'Functor(%s' % self._function.__name__
@ -1183,19 +1191,19 @@ class ParamObj:
for param in self.getParams(): for param in self.getParams():
self.paramVals[param] = getSetter(obj, param, 'get')() self.paramVals[param] = getSetter(obj, param, 'get')()
obj.unlockParams() obj.unlockParams()
# CLASS METHODS @classmethod
def getParams(cls): def getParams(cls):
# returns safely-mutable list of param names # returns safely-mutable list of param names
cls._compileDefaultParams() cls._compileDefaultParams()
return cls._Params.keys() return cls._Params.keys()
getParams = classmethod(getParams) @classmethod
def getDefaultValue(cls, param): def getDefaultValue(cls, param):
cls._compileDefaultParams() cls._compileDefaultParams()
dv = cls._Params[param] dv = cls._Params[param]
if callable(dv): if callable(dv):
dv = dv() dv = dv()
return dv return dv
getDefaultValue = classmethod(getDefaultValue) @classmethod
def _compileDefaultParams(cls): def _compileDefaultParams(cls):
if cls.__dict__.has_key('_Params'): if cls.__dict__.has_key('_Params'):
# we've already compiled the defaults for this class # we've already compiled the defaults for this class
@ -1210,7 +1218,6 @@ class ParamObj:
if c.__dict__.has_key('Params'): if c.__dict__.has_key('Params'):
# apply this class' default param values to our dict # apply this class' default param values to our dict
cls._Params.update(c.Params) cls._Params.update(c.Params)
_compileDefaultParams = classmethod(_compileDefaultParams)
def __repr__(self): def __repr__(self):
argStr = '' argStr = ''
for param in self.getParams(): for param in self.getParams():