Emir Sokic / mbedPAI Featured

mbed.h verzija za koristenje na predmetu PAI

FunctionPointer.h@0:05aad811ea07, 2015-03-10 (annotated)

Committer:
esokic
Date:
Tue Mar 10 09:51:52 2015 +0000
Revision:
0:05aad811ea07
mbed.h verzija od marta 2014, za koristenje na predmetu PAI

Who changed what in which revision?

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esokic 0:05aad811ea07 1 /* mbed Microcontroller Library
esokic 0:05aad811ea07 2 * Copyright (c) 2006-2013 ARM Limited
esokic 0:05aad811ea07 3 *
esokic 0:05aad811ea07 4 * Licensed under the Apache License, Version 2.0 (the "License");
esokic 0:05aad811ea07 5 * you may not use this file except in compliance with the License.
esokic 0:05aad811ea07 6 * You may obtain a copy of the License at
esokic 0:05aad811ea07 7 *
esokic 0:05aad811ea07 8 * http://www.apache.org/licenses/LICENSE-2.0
esokic 0:05aad811ea07 9 *
esokic 0:05aad811ea07 10 * Unless required by applicable law or agreed to in writing, software
esokic 0:05aad811ea07 11 * distributed under the License is distributed on an "AS IS" BASIS,
esokic 0:05aad811ea07 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
esokic 0:05aad811ea07 13 * See the License for the specific language governing permissions and
esokic 0:05aad811ea07 14 * limitations under the License.
esokic 0:05aad811ea07 15 */
esokic 0:05aad811ea07 16 #ifndef MBED_FUNCTIONPOINTER_H
esokic 0:05aad811ea07 17 #define MBED_FUNCTIONPOINTER_H
esokic 0:05aad811ea07 18
esokic 0:05aad811ea07 19 #include <string.h>
esokic 0:05aad811ea07 20
esokic 0:05aad811ea07 21 namespace mbed {
esokic 0:05aad811ea07 22
esokic 0:05aad811ea07 23 typedef void (*pvoidf_t)(void);
esokic 0:05aad811ea07 24
esokic 0:05aad811ea07 25 /** A class for storing and calling a pointer to a static or member void function
esokic 0:05aad811ea07 26 */
esokic 0:05aad811ea07 27 class FunctionPointer {
esokic 0:05aad811ea07 28 public:
esokic 0:05aad811ea07 29
esokic 0:05aad811ea07 30 /** Create a FunctionPointer, attaching a static function
esokic 0:05aad811ea07 31 *
esokic 0:05aad811ea07 32 * @param function The void static function to attach (default is none)
esokic 0:05aad811ea07 33 */
esokic 0:05aad811ea07 34 FunctionPointer(void (*function)(void) = 0);
esokic 0:05aad811ea07 35
esokic 0:05aad811ea07 36 /** Create a FunctionPointer, attaching a member function
esokic 0:05aad811ea07 37 *
esokic 0:05aad811ea07 38 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
esokic 0:05aad811ea07 39 * @param function The address of the void member function to attach
esokic 0:05aad811ea07 40 */
esokic 0:05aad811ea07 41 template<typename T>
esokic 0:05aad811ea07 42 FunctionPointer(T *object, void (T::*member)(void)) {
esokic 0:05aad811ea07 43 attach(object, member);
esokic 0:05aad811ea07 44 }
esokic 0:05aad811ea07 45
esokic 0:05aad811ea07 46 /** Attach a static function
esokic 0:05aad811ea07 47 *
esokic 0:05aad811ea07 48 * @param function The void static function to attach (default is none)
esokic 0:05aad811ea07 49 */
esokic 0:05aad811ea07 50 void attach(void (*function)(void) = 0);
esokic 0:05aad811ea07 51
esokic 0:05aad811ea07 52 /** Attach a member function
esokic 0:05aad811ea07 53 *
esokic 0:05aad811ea07 54 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
esokic 0:05aad811ea07 55 * @param function The address of the void member function to attach
esokic 0:05aad811ea07 56 */
esokic 0:05aad811ea07 57 template<typename T>
esokic 0:05aad811ea07 58 void attach(T *object, void (T::*member)(void)) {
esokic 0:05aad811ea07 59 _object = static_cast<void*>(object);
esokic 0:05aad811ea07 60 memcpy(_member, (char*)&member, sizeof(member));
esokic 0:05aad811ea07 61 _membercaller = &FunctionPointer::membercaller<T>;
esokic 0:05aad811ea07 62 _function = 0;
esokic 0:05aad811ea07 63 }
esokic 0:05aad811ea07 64
esokic 0:05aad811ea07 65 /** Call the attached static or member function
esokic 0:05aad811ea07 66 */
esokic 0:05aad811ea07 67 void call();
esokic 0:05aad811ea07 68
esokic 0:05aad811ea07 69 pvoidf_t get_function() const {
esokic 0:05aad811ea07 70 return (pvoidf_t)_function;
esokic 0:05aad811ea07 71 }
esokic 0:05aad811ea07 72
esokic 0:05aad811ea07 73 #ifdef MBED_OPERATORS
esokic 0:05aad811ea07 74 void operator ()(void);
esokic 0:05aad811ea07 75 #endif
esokic 0:05aad811ea07 76
esokic 0:05aad811ea07 77 private:
esokic 0:05aad811ea07 78 template<typename T>
esokic 0:05aad811ea07 79 static void membercaller(void *object, char *member) {
esokic 0:05aad811ea07 80 T* o = static_cast<T*>(object);
esokic 0:05aad811ea07 81 void (T::*m)(void);
esokic 0:05aad811ea07 82 memcpy((char*)&m, member, sizeof(m));
esokic 0:05aad811ea07 83 (o->*m)();
esokic 0:05aad811ea07 84 }
esokic 0:05aad811ea07 85
esokic 0:05aad811ea07 86 void (*_function)(void); // static function pointer - 0 if none attached
esokic 0:05aad811ea07 87 void *_object; // object this pointer - 0 if none attached
esokic 0:05aad811ea07 88 char _member[16]; // raw member function pointer storage - converted back by registered _membercaller
esokic 0:05aad811ea07 89 void (*_membercaller)(void*, char*); // registered membercaller function to convert back and call _member on _object
esokic 0:05aad811ea07 90 };
esokic 0:05aad811ea07 91
esokic 0:05aad811ea07 92 } // namespace mbed
esokic 0:05aad811ea07 93
esokic 0:05aad811ea07 94 #endif