| """Late-bound base-class (with acceleration)""" |
| from OpenGL import acceleratesupport |
| LateBind = Curry = None |
| if acceleratesupport.ACCELERATE_AVAILABLE: |
| try: |
| from OpenGL_accelerate.latebind import LateBind, Curry |
| except ImportError as err: |
| pass |
| if LateBind is None: |
| class LateBind(object): |
| """Provides a __call__ which dispatches to self._finalCall |
| |
| When called without self._finalCall() makes a call to |
| self.finalise() and then calls self._finalCall() |
| """ |
| _finalCall = None |
| def setFinalCall( self, finalCall ): |
| """Set our finalCall to the callable object given""" |
| self._finalCall = finalCall |
| def getFinalCall( self ): |
| """Retrieve and/or bind and retrieve final call""" |
| if not self._finalCall: |
| self._finalCall = self.finalise() |
| return self._finalCall |
|
|
|
|
| def finalise( self ): |
| """Finalise our target to our final callable object |
| |
| return final callable |
| """ |
|
|
| def __call__( self, *args, **named ): |
| """Call self._finalCall, calling finalise() first if not already called |
| |
| There's actually *no* reason to unpack and repack the arguments, |
| but unfortunately I don't know of a Cython syntax to specify |
| that. |
| """ |
| try: |
| return self._finalCall( *args, **named ) |
| except (TypeError,AttributeError) as err: |
| if self._finalCall is None: |
| self._finalCall = self.finalise() |
| return self._finalCall( *args, **named ) |
| if Curry is None: |
| class Curry(object): |
| """Provides a simple Curry which can bind (only) the first element |
| |
| This is used by lazywrapper, which explains the weird naming |
| of the two attributes... |
| """ |
| wrapperFunction = None |
| baseFunction = None |
| def __init__( self, wrapperFunction, baseFunction ): |
| """Stores self.wrapperFunction and self.baseFunction""" |
| self.baseFunction = baseFunction |
| self.wrapperFunction = wrapperFunction |
| def __call__( self, *args, **named ): |
| """returns self.wrapperFunction( self.baseFunction, *args, **named )""" |
| return self.wrapperFunction( self.baseFunction, *args, **named ) |
|
|
