Mark Turner / MarksMbed

This is a repository for all my programs or modified programs.

FunctionPointer.h@0:72480818e4a9, 2016-09-11 (annotated)

Committer:
mturner5
Date:
Sun Sep 11 23:48:09 2016 +0000
Revision:
0:72480818e4a9
Made delays for the LEDS and button presses

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mturner5 0:72480818e4a9 1 /* mbed Microcontroller Library
mturner5 0:72480818e4a9 2 * Copyright (c) 2006-2013 ARM Limited
mturner5 0:72480818e4a9 3 *
mturner5 0:72480818e4a9 4 * Licensed under the Apache License, Version 2.0 (the "License");
mturner5 0:72480818e4a9 5 * you may not use this file except in compliance with the License.
mturner5 0:72480818e4a9 6 * You may obtain a copy of the License at
mturner5 0:72480818e4a9 7 *
mturner5 0:72480818e4a9 8 * http://www.apache.org/licenses/LICENSE-2.0
mturner5 0:72480818e4a9 9 *
mturner5 0:72480818e4a9 10 * Unless required by applicable law or agreed to in writing, software
mturner5 0:72480818e4a9 11 * distributed under the License is distributed on an "AS IS" BASIS,
mturner5 0:72480818e4a9 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mturner5 0:72480818e4a9 13 * See the License for the specific language governing permissions and
mturner5 0:72480818e4a9 14 * limitations under the License.
mturner5 0:72480818e4a9 15 */
mturner5 0:72480818e4a9 16 #ifndef MBED_FUNCTIONPOINTER_H
mturner5 0:72480818e4a9 17 #define MBED_FUNCTIONPOINTER_H
mturner5 0:72480818e4a9 18
mturner5 0:72480818e4a9 19 #include <string.h>
mturner5 0:72480818e4a9 20
mturner5 0:72480818e4a9 21 namespace mbed {
mturner5 0:72480818e4a9 22
mturner5 0:72480818e4a9 23 typedef void (*pvoidf_t)(void);
mturner5 0:72480818e4a9 24
mturner5 0:72480818e4a9 25 /** A class for storing and calling a pointer to a static or member void function
mturner5 0:72480818e4a9 26 */
mturner5 0:72480818e4a9 27 class FunctionPointer {
mturner5 0:72480818e4a9 28 public:
mturner5 0:72480818e4a9 29
mturner5 0:72480818e4a9 30 /** Create a FunctionPointer, attaching a static function
mturner5 0:72480818e4a9 31 *
mturner5 0:72480818e4a9 32 * @param function The void static function to attach (default is none)
mturner5 0:72480818e4a9 33 */
mturner5 0:72480818e4a9 34 FunctionPointer(void (*function)(void) = 0);
mturner5 0:72480818e4a9 35
mturner5 0:72480818e4a9 36 /** Create a FunctionPointer, attaching a member function
mturner5 0:72480818e4a9 37 *
mturner5 0:72480818e4a9 38 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
mturner5 0:72480818e4a9 39 * @param function The address of the void member function to attach
mturner5 0:72480818e4a9 40 */
mturner5 0:72480818e4a9 41 template<typename T>
mturner5 0:72480818e4a9 42 FunctionPointer(T *object, void (T::*member)(void)) {
mturner5 0:72480818e4a9 43 attach(object, member);
mturner5 0:72480818e4a9 44 }
mturner5 0:72480818e4a9 45
mturner5 0:72480818e4a9 46 /** Attach a static function
mturner5 0:72480818e4a9 47 *
mturner5 0:72480818e4a9 48 * @param function The void static function to attach (default is none)
mturner5 0:72480818e4a9 49 */
mturner5 0:72480818e4a9 50 void attach(void (*function)(void) = 0);
mturner5 0:72480818e4a9 51
mturner5 0:72480818e4a9 52 /** Attach a member function
mturner5 0:72480818e4a9 53 *
mturner5 0:72480818e4a9 54 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
mturner5 0:72480818e4a9 55 * @param function The address of the void member function to attach
mturner5 0:72480818e4a9 56 */
mturner5 0:72480818e4a9 57 template<typename T>
mturner5 0:72480818e4a9 58 void attach(T *object, void (T::*member)(void)) {
mturner5 0:72480818e4a9 59 _object = static_cast<void*>(object);
mturner5 0:72480818e4a9 60 memcpy(_member, (char*)&member, sizeof(member));
mturner5 0:72480818e4a9 61 _membercaller = &FunctionPointer::membercaller<T>;
mturner5 0:72480818e4a9 62 _function = 0;
mturner5 0:72480818e4a9 63 }
mturner5 0:72480818e4a9 64
mturner5 0:72480818e4a9 65 /** Call the attached static or member function
mturner5 0:72480818e4a9 66 */
mturner5 0:72480818e4a9 67 void call();
mturner5 0:72480818e4a9 68
mturner5 0:72480818e4a9 69 pvoidf_t get_function() const {
mturner5 0:72480818e4a9 70 return (pvoidf_t)_function;
mturner5 0:72480818e4a9 71 }
mturner5 0:72480818e4a9 72
mturner5 0:72480818e4a9 73 #ifdef MBED_OPERATORS
mturner5 0:72480818e4a9 74 void operator ()(void);
mturner5 0:72480818e4a9 75 #endif
mturner5 0:72480818e4a9 76
mturner5 0:72480818e4a9 77 private:
mturner5 0:72480818e4a9 78 template<typename T>
mturner5 0:72480818e4a9 79 static void membercaller(void *object, char *member) {
mturner5 0:72480818e4a9 80 T* o = static_cast<T*>(object);
mturner5 0:72480818e4a9 81 void (T::*m)(void);
mturner5 0:72480818e4a9 82 memcpy((char*)&m, member, sizeof(m));
mturner5 0:72480818e4a9 83 (o->*m)();
mturner5 0:72480818e4a9 84 }
mturner5 0:72480818e4a9 85
mturner5 0:72480818e4a9 86 void (*_function)(void); // static function pointer - 0 if none attached
mturner5 0:72480818e4a9 87 void *_object; // object this pointer - 0 if none attached
mturner5 0:72480818e4a9 88 char _member[16]; // raw member function pointer storage - converted back by registered _membercaller
mturner5 0:72480818e4a9 89 void (*_membercaller)(void*, char*); // registered membercaller function to convert back and call _member on _object
mturner5 0:72480818e4a9 90 };
mturner5 0:72480818e4a9 91
mturner5 0:72480818e4a9 92 } // namespace mbed
mturner5 0:72480818e4a9 93
mturner5 0:72480818e4a9 94 #endif