Yihui Xiong / mbed-src-nrf51822

customized mbed library sources for nrf51822

Dependents:   Grove_Node Potentiometer BLE_Beacon I2C_Scanner

api/FunctionPointer.h@0:700cadd8b708, 2014-11-04 (annotated)

Committer:
yihui
Date:
Tue Nov 04 07:38:53 2014 +0000
Revision:
0:700cadd8b708
customized mbed-src library for nrf51822

Who changed what in which revision?

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yihui 0:700cadd8b708 1 /* mbed Microcontroller Library
yihui 0:700cadd8b708 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:700cadd8b708 3 *
yihui 0:700cadd8b708 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:700cadd8b708 5 * you may not use this file except in compliance with the License.
yihui 0:700cadd8b708 6 * You may obtain a copy of the License at
yihui 0:700cadd8b708 7 *
yihui 0:700cadd8b708 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:700cadd8b708 9 *
yihui 0:700cadd8b708 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:700cadd8b708 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:700cadd8b708 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:700cadd8b708 13 * See the License for the specific language governing permissions and
yihui 0:700cadd8b708 14 * limitations under the License.
yihui 0:700cadd8b708 15 */
yihui 0:700cadd8b708 16 #ifndef MBED_FUNCTIONPOINTER_H
yihui 0:700cadd8b708 17 #define MBED_FUNCTIONPOINTER_H
yihui 0:700cadd8b708 18
yihui 0:700cadd8b708 19 #include <string.h>
yihui 0:700cadd8b708 20
yihui 0:700cadd8b708 21 namespace mbed {
yihui 0:700cadd8b708 22
yihui 0:700cadd8b708 23 typedef void (*pvoidf_t)(void);
yihui 0:700cadd8b708 24
yihui 0:700cadd8b708 25 /** A class for storing and calling a pointer to a static or member void function
yihui 0:700cadd8b708 26 */
yihui 0:700cadd8b708 27 class FunctionPointer {
yihui 0:700cadd8b708 28 public:
yihui 0:700cadd8b708 29
yihui 0:700cadd8b708 30 /** Create a FunctionPointer, attaching a static function
yihui 0:700cadd8b708 31 *
yihui 0:700cadd8b708 32 * @param function The void static function to attach (default is none)
yihui 0:700cadd8b708 33 */
yihui 0:700cadd8b708 34 FunctionPointer(void (*function)(void) = 0);
yihui 0:700cadd8b708 35
yihui 0:700cadd8b708 36 /** Create a FunctionPointer, attaching a member function
yihui 0:700cadd8b708 37 *
yihui 0:700cadd8b708 38 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
yihui 0:700cadd8b708 39 * @param function The address of the void member function to attach
yihui 0:700cadd8b708 40 */
yihui 0:700cadd8b708 41 template<typename T>
yihui 0:700cadd8b708 42 FunctionPointer(T *object, void (T::*member)(void)) {
yihui 0:700cadd8b708 43 attach(object, member);
yihui 0:700cadd8b708 44 }
yihui 0:700cadd8b708 45
yihui 0:700cadd8b708 46 /** Attach a static function
yihui 0:700cadd8b708 47 *
yihui 0:700cadd8b708 48 * @param function The void static function to attach (default is none)
yihui 0:700cadd8b708 49 */
yihui 0:700cadd8b708 50 void attach(void (*function)(void) = 0);
yihui 0:700cadd8b708 51
yihui 0:700cadd8b708 52 /** Attach a member function
yihui 0:700cadd8b708 53 *
yihui 0:700cadd8b708 54 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
yihui 0:700cadd8b708 55 * @param function The address of the void member function to attach
yihui 0:700cadd8b708 56 */
yihui 0:700cadd8b708 57 template<typename T>
yihui 0:700cadd8b708 58 void attach(T *object, void (T::*member)(void)) {
yihui 0:700cadd8b708 59 _object = static_cast<void*>(object);
yihui 0:700cadd8b708 60 memcpy(_member, (char*)&member, sizeof(member));
yihui 0:700cadd8b708 61 _membercaller = &FunctionPointer::membercaller<T>;
yihui 0:700cadd8b708 62 _function = 0;
yihui 0:700cadd8b708 63 }
yihui 0:700cadd8b708 64
yihui 0:700cadd8b708 65 /** Call the attached static or member function
yihui 0:700cadd8b708 66 */
yihui 0:700cadd8b708 67 void call();
yihui 0:700cadd8b708 68
yihui 0:700cadd8b708 69 pvoidf_t get_function() const {
yihui 0:700cadd8b708 70 return (pvoidf_t)_function;
yihui 0:700cadd8b708 71 }
yihui 0:700cadd8b708 72
yihui 0:700cadd8b708 73 #ifdef MBED_OPERATORS
yihui 0:700cadd8b708 74 void operator ()(void);
yihui 0:700cadd8b708 75 #endif
yihui 0:700cadd8b708 76
yihui 0:700cadd8b708 77 private:
yihui 0:700cadd8b708 78 template<typename T>
yihui 0:700cadd8b708 79 static void membercaller(void *object, char *member) {
yihui 0:700cadd8b708 80 T* o = static_cast<T*>(object);
yihui 0:700cadd8b708 81 void (T::*m)(void);
yihui 0:700cadd8b708 82 memcpy((char*)&m, member, sizeof(m));
yihui 0:700cadd8b708 83 (o->*m)();
yihui 0:700cadd8b708 84 }
yihui 0:700cadd8b708 85
yihui 0:700cadd8b708 86 void (*_function)(void); // static function pointer - 0 if none attached
yihui 0:700cadd8b708 87 void *_object; // object this pointer - 0 if none attached
yihui 0:700cadd8b708 88 char _member[16]; // raw member function pointer storage - converted back by registered _membercaller
yihui 0:700cadd8b708 89 void (*_membercaller)(void*, char*); // registered membercaller function to convert back and call _member on _object
yihui 0:700cadd8b708 90 };
yihui 0:700cadd8b708 91
yihui 0:700cadd8b708 92 } // namespace mbed
yihui 0:700cadd8b708 93
yihui 0:700cadd8b708 94 #endif