1# Copyright (c) 2014-2015, Intel Corporation 2# All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without modification, 5# are permitted provided that the following conditions are met: 6# 7# 1. Redistributions of source code must retain the above copyright notice, this 8# list of conditions and the following disclaimer. 9# 10# 2. Redistributions in binary form must reproduce the above copyright notice, 11# this list of conditions and the following disclaimer in the documentation and/or 12# other materials provided with the distribution. 13# 14# 3. Neither the name of the copyright holder nor the names of its contributors 15# may be used to endorse or promote products derived from this software without 16# specific prior written permission. 17# 18# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 19# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 22# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 25# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 30class DynamicCallHelper: 31 32 """ 33 Callable object which wrap a function call. 34 35 This simple class is designed to avoid the use of lambda 36 hack to capture arguments when generating function call. 37 Indeed, to generate a call to a function which take 38 parameters at runtime, we need to force the copy by capture 39 of the parameter by using default value such as : 40 41 callerDict = { 42 a: lambda a=a : print(a) 43 for a in range(5) 44 } 45 46 With the DynamicCallHelper you can simply use : 47 48 callerDict = { 49 DynamicCallHelper(print, a) 50 for a in range(5) 51 } 52 """ 53 54 def __init__(self, func, *args): 55 """ 56 Init method 57 58 :param func: the function that will be called when calling the object 59 :type func: function 60 :param *args: arguments destinated to func 61 :type *args: list 62 """ 63 64 self.__func = func 65 self.__args = args 66 67 def __call__(self): 68 """ 69 Call the function __func with __args as arguments 70 71 :return: __func return 72 """ 73 74 return self.__func(*self.__args) 75