Mladen Adamovic / Spectrogram

Final version.

Dependencies:   F746_GUI F746_SAI_IO UIT_FFT_Real

Fork of F746_Spectrogram by 不韋 呂

mbed_src_STM32F7/api/FunctionPointer.h@9:444e58089d09, 2017-08-30 (annotated)

Committer:
mladjo1993
Date:
Wed Aug 30 07:47:58 2017 +0000
Revision:
9:444e58089d09
Parent:
4:c1beacfc42c7 
Final version.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 4:c1beacfc42c7 1 /* mbed Microcontroller Library
MikamiUitOpen 4:c1beacfc42c7 2 * Copyright (c) 2006-2015 ARM Limited
MikamiUitOpen 4:c1beacfc42c7 3 *
MikamiUitOpen 4:c1beacfc42c7 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 4:c1beacfc42c7 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 4:c1beacfc42c7 6 * You may obtain a copy of the License at
MikamiUitOpen 4:c1beacfc42c7 7 *
MikamiUitOpen 4:c1beacfc42c7 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 4:c1beacfc42c7 9 *
MikamiUitOpen 4:c1beacfc42c7 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 4:c1beacfc42c7 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 4:c1beacfc42c7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 4:c1beacfc42c7 13 * See the License for the specific language governing permissions and
MikamiUitOpen 4:c1beacfc42c7 14 * limitations under the License.
MikamiUitOpen 4:c1beacfc42c7 15 */
MikamiUitOpen 4:c1beacfc42c7 16 #ifndef MBED_FUNCTIONPOINTER_H
MikamiUitOpen 4:c1beacfc42c7 17 #define MBED_FUNCTIONPOINTER_H
MikamiUitOpen 4:c1beacfc42c7 18
MikamiUitOpen 4:c1beacfc42c7 19 #include <string.h>
MikamiUitOpen 4:c1beacfc42c7 20 #include <stdint.h>
MikamiUitOpen 4:c1beacfc42c7 21
MikamiUitOpen 4:c1beacfc42c7 22 namespace mbed {
MikamiUitOpen 4:c1beacfc42c7 23
MikamiUitOpen 4:c1beacfc42c7 24 /* If we had variaditic templates, this wouldn't be a problem, but until C++11 is enabled, we are stuck with multiple classes... */
MikamiUitOpen 4:c1beacfc42c7 25
MikamiUitOpen 4:c1beacfc42c7 26 /** A class for storing and calling a pointer to a static or member function
MikamiUitOpen 4:c1beacfc42c7 27 */
MikamiUitOpen 4:c1beacfc42c7 28 template <typename R, typename A1>
MikamiUitOpen 4:c1beacfc42c7 29 class FunctionPointerArg1{
MikamiUitOpen 4:c1beacfc42c7 30 public:
MikamiUitOpen 4:c1beacfc42c7 31 /** Create a FunctionPointer, attaching a static function
MikamiUitOpen 4:c1beacfc42c7 32 *
MikamiUitOpen 4:c1beacfc42c7 33 * @param function The static function to attach (default is none)
MikamiUitOpen 4:c1beacfc42c7 34 */
MikamiUitOpen 4:c1beacfc42c7 35 FunctionPointerArg1(R (*function)(A1) = 0) {
MikamiUitOpen 4:c1beacfc42c7 36 attach(function);
MikamiUitOpen 4:c1beacfc42c7 37 }
MikamiUitOpen 4:c1beacfc42c7 38
MikamiUitOpen 4:c1beacfc42c7 39 /** Create a FunctionPointer, attaching a member function
MikamiUitOpen 4:c1beacfc42c7 40 *
MikamiUitOpen 4:c1beacfc42c7 41 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
MikamiUitOpen 4:c1beacfc42c7 42 * @param function The address of the member function to attach
MikamiUitOpen 4:c1beacfc42c7 43 */
MikamiUitOpen 4:c1beacfc42c7 44 template<typename T>
MikamiUitOpen 4:c1beacfc42c7 45 FunctionPointerArg1(T *object, R (T::*member)(A1)) {
MikamiUitOpen 4:c1beacfc42c7 46 attach(object, member);
MikamiUitOpen 4:c1beacfc42c7 47 }
MikamiUitOpen 4:c1beacfc42c7 48
MikamiUitOpen 4:c1beacfc42c7 49 /** Attach a static function
MikamiUitOpen 4:c1beacfc42c7 50 *
MikamiUitOpen 4:c1beacfc42c7 51 * @param function The static function to attach (default is none)
MikamiUitOpen 4:c1beacfc42c7 52 */
MikamiUitOpen 4:c1beacfc42c7 53 void attach(R (*function)(A1)) {
MikamiUitOpen 4:c1beacfc42c7 54 _p.function = function;
MikamiUitOpen 4:c1beacfc42c7 55 _membercaller = 0;
MikamiUitOpen 4:c1beacfc42c7 56 }
MikamiUitOpen 4:c1beacfc42c7 57
MikamiUitOpen 4:c1beacfc42c7 58 /** Attach a member function
MikamiUitOpen 4:c1beacfc42c7 59 *
MikamiUitOpen 4:c1beacfc42c7 60 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
MikamiUitOpen 4:c1beacfc42c7 61 * @param function The address of the member function to attach
MikamiUitOpen 4:c1beacfc42c7 62 */
MikamiUitOpen 4:c1beacfc42c7 63 template<typename T>
MikamiUitOpen 4:c1beacfc42c7 64 void attach(T *object, R (T::*member)(A1)) {
MikamiUitOpen 4:c1beacfc42c7 65 _p.object = static_cast<void*>(object);
MikamiUitOpen 4:c1beacfc42c7 66 *reinterpret_cast<R (T::**)(A1)>(_member) = member;
MikamiUitOpen 4:c1beacfc42c7 67 _membercaller = &FunctionPointerArg1::membercaller<T>;
MikamiUitOpen 4:c1beacfc42c7 68 }
MikamiUitOpen 4:c1beacfc42c7 69
MikamiUitOpen 4:c1beacfc42c7 70 /** Call the attached static or member function
MikamiUitOpen 4:c1beacfc42c7 71 */
MikamiUitOpen 4:c1beacfc42c7 72 R call(A1 a) {
MikamiUitOpen 4:c1beacfc42c7 73 if (_membercaller == 0 && _p.function) {
MikamiUitOpen 4:c1beacfc42c7 74 return _p.function(a);
MikamiUitOpen 4:c1beacfc42c7 75 } else if (_membercaller && _p.object) {
MikamiUitOpen 4:c1beacfc42c7 76 return _membercaller(_p.object, _member, a);
MikamiUitOpen 4:c1beacfc42c7 77 }
MikamiUitOpen 4:c1beacfc42c7 78 return (R)0;
MikamiUitOpen 4:c1beacfc42c7 79 }
MikamiUitOpen 4:c1beacfc42c7 80
MikamiUitOpen 4:c1beacfc42c7 81 /** Get registered static function
MikamiUitOpen 4:c1beacfc42c7 82 */
MikamiUitOpen 4:c1beacfc42c7 83 R(*get_function(A1))() {
MikamiUitOpen 4:c1beacfc42c7 84 return _membercaller ? (R(*)(A1))0 : (R(*)(A1))_p.function;
MikamiUitOpen 4:c1beacfc42c7 85 }
MikamiUitOpen 4:c1beacfc42c7 86
MikamiUitOpen 4:c1beacfc42c7 87 #ifdef MBED_OPERATORS
MikamiUitOpen 4:c1beacfc42c7 88 R operator ()(A1 a) {
MikamiUitOpen 4:c1beacfc42c7 89 return call(a);
MikamiUitOpen 4:c1beacfc42c7 90 }
MikamiUitOpen 4:c1beacfc42c7 91 operator bool(void) const {
MikamiUitOpen 4:c1beacfc42c7 92 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL;
MikamiUitOpen 4:c1beacfc42c7 93 }
MikamiUitOpen 4:c1beacfc42c7 94 #endif
MikamiUitOpen 4:c1beacfc42c7 95 private:
MikamiUitOpen 4:c1beacfc42c7 96 template<typename T>
MikamiUitOpen 4:c1beacfc42c7 97 static R membercaller(void *object, uintptr_t *member, A1 a) {
MikamiUitOpen 4:c1beacfc42c7 98 T* o = static_cast<T*>(object);
MikamiUitOpen 4:c1beacfc42c7 99 R (T::**m)(A1) = reinterpret_cast<R (T::**)(A1)>(member);
MikamiUitOpen 4:c1beacfc42c7 100 return (o->**m)(a);
MikamiUitOpen 4:c1beacfc42c7 101 }
MikamiUitOpen 4:c1beacfc42c7 102
MikamiUitOpen 4:c1beacfc42c7 103 union {
MikamiUitOpen 4:c1beacfc42c7 104 R (*function)(A1); // static function pointer
MikamiUitOpen 4:c1beacfc42c7 105 void *object; // object this pointer
MikamiUitOpen 4:c1beacfc42c7 106 } _p;
MikamiUitOpen 4:c1beacfc42c7 107 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller
MikamiUitOpen 4:c1beacfc42c7 108 R (*_membercaller)(void*, uintptr_t*, A1); // registered membercaller function to convert back and call _m.member on _object
MikamiUitOpen 4:c1beacfc42c7 109 };
MikamiUitOpen 4:c1beacfc42c7 110
MikamiUitOpen 4:c1beacfc42c7 111 /** A class for storing and calling a pointer to a static or member function (R ()(void))
MikamiUitOpen 4:c1beacfc42c7 112 */
MikamiUitOpen 4:c1beacfc42c7 113 template <typename R>
MikamiUitOpen 4:c1beacfc42c7 114 class FunctionPointerArg1<R, void>{
MikamiUitOpen 4:c1beacfc42c7 115 public:
MikamiUitOpen 4:c1beacfc42c7 116 /** Create a FunctionPointer, attaching a static function
MikamiUitOpen 4:c1beacfc42c7 117 *
MikamiUitOpen 4:c1beacfc42c7 118 * @param function The static function to attach (default is none)
MikamiUitOpen 4:c1beacfc42c7 119 */
MikamiUitOpen 4:c1beacfc42c7 120 FunctionPointerArg1(R (*function)(void) = 0) {
MikamiUitOpen 4:c1beacfc42c7 121 attach(function);
MikamiUitOpen 4:c1beacfc42c7 122 }
MikamiUitOpen 4:c1beacfc42c7 123
MikamiUitOpen 4:c1beacfc42c7 124 /** Create a FunctionPointer, attaching a member function
MikamiUitOpen 4:c1beacfc42c7 125 *
MikamiUitOpen 4:c1beacfc42c7 126 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
MikamiUitOpen 4:c1beacfc42c7 127 * @param function The address of the void member function to attach
MikamiUitOpen 4:c1beacfc42c7 128 */
MikamiUitOpen 4:c1beacfc42c7 129 template<typename T>
MikamiUitOpen 4:c1beacfc42c7 130 FunctionPointerArg1(T *object, R (T::*member)(void)) {
MikamiUitOpen 4:c1beacfc42c7 131 attach(object, member);
MikamiUitOpen 4:c1beacfc42c7 132 }
MikamiUitOpen 4:c1beacfc42c7 133
MikamiUitOpen 4:c1beacfc42c7 134 /** Attach a static function
MikamiUitOpen 4:c1beacfc42c7 135 *
MikamiUitOpen 4:c1beacfc42c7 136 * @param function The void static function to attach (default is none)
MikamiUitOpen 4:c1beacfc42c7 137 */
MikamiUitOpen 4:c1beacfc42c7 138 void attach(R (*function)(void)) {
MikamiUitOpen 4:c1beacfc42c7 139 _p.function = function;
MikamiUitOpen 4:c1beacfc42c7 140 _membercaller = 0;
MikamiUitOpen 4:c1beacfc42c7 141 }
MikamiUitOpen 4:c1beacfc42c7 142
MikamiUitOpen 4:c1beacfc42c7 143 /** Attach a member function
MikamiUitOpen 4:c1beacfc42c7 144 *
MikamiUitOpen 4:c1beacfc42c7 145 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
MikamiUitOpen 4:c1beacfc42c7 146 * @param function The address of the void member function to attach
MikamiUitOpen 4:c1beacfc42c7 147 */
MikamiUitOpen 4:c1beacfc42c7 148 template<typename T>
MikamiUitOpen 4:c1beacfc42c7 149 void attach(T *object, R (T::*member)(void)) {
MikamiUitOpen 4:c1beacfc42c7 150 _p.object = static_cast<void*>(object);
MikamiUitOpen 4:c1beacfc42c7 151 *reinterpret_cast<R (T::**)(void)>(_member) = member;
MikamiUitOpen 4:c1beacfc42c7 152 _membercaller = &FunctionPointerArg1::membercaller<T>;
MikamiUitOpen 4:c1beacfc42c7 153 }
MikamiUitOpen 4:c1beacfc42c7 154
MikamiUitOpen 4:c1beacfc42c7 155 /** Call the attached static or member function
MikamiUitOpen 4:c1beacfc42c7 156 */
MikamiUitOpen 4:c1beacfc42c7 157 R call(){
MikamiUitOpen 4:c1beacfc42c7 158 if (_membercaller == 0 && _p.function) {
MikamiUitOpen 4:c1beacfc42c7 159 return _p.function();
MikamiUitOpen 4:c1beacfc42c7 160 } else if (_membercaller && _p.object) {
MikamiUitOpen 4:c1beacfc42c7 161 return _membercaller(_p.object, _member);
MikamiUitOpen 4:c1beacfc42c7 162 }
MikamiUitOpen 4:c1beacfc42c7 163 return (R)0;
MikamiUitOpen 4:c1beacfc42c7 164 }
MikamiUitOpen 4:c1beacfc42c7 165
MikamiUitOpen 4:c1beacfc42c7 166 /** Get registered static function
MikamiUitOpen 4:c1beacfc42c7 167 */
MikamiUitOpen 4:c1beacfc42c7 168 R(*get_function())() {
MikamiUitOpen 4:c1beacfc42c7 169 return _membercaller ? (R(*)())0 : (R(*)())_p.function;
MikamiUitOpen 4:c1beacfc42c7 170 }
MikamiUitOpen 4:c1beacfc42c7 171
MikamiUitOpen 4:c1beacfc42c7 172 #ifdef MBED_OPERATORS
MikamiUitOpen 4:c1beacfc42c7 173 R operator ()(void) {
MikamiUitOpen 4:c1beacfc42c7 174 return call();
MikamiUitOpen 4:c1beacfc42c7 175 }
MikamiUitOpen 4:c1beacfc42c7 176 operator bool(void) const {
MikamiUitOpen 4:c1beacfc42c7 177 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL;
MikamiUitOpen 4:c1beacfc42c7 178 }
MikamiUitOpen 4:c1beacfc42c7 179 #endif
MikamiUitOpen 4:c1beacfc42c7 180
MikamiUitOpen 4:c1beacfc42c7 181 private:
MikamiUitOpen 4:c1beacfc42c7 182 template<typename T>
MikamiUitOpen 4:c1beacfc42c7 183 static R membercaller(void *object, uintptr_t *member) {
MikamiUitOpen 4:c1beacfc42c7 184 T* o = static_cast<T*>(object);
MikamiUitOpen 4:c1beacfc42c7 185 R (T::**m)(void) = reinterpret_cast<R (T::**)(void)>(member);
MikamiUitOpen 4:c1beacfc42c7 186 return (o->**m)();
MikamiUitOpen 4:c1beacfc42c7 187 }
MikamiUitOpen 4:c1beacfc42c7 188
MikamiUitOpen 4:c1beacfc42c7 189 union {
MikamiUitOpen 4:c1beacfc42c7 190 R (*function)(void); // static function pointer
MikamiUitOpen 4:c1beacfc42c7 191 void *object; // object this pointer
MikamiUitOpen 4:c1beacfc42c7 192 } _p;
MikamiUitOpen 4:c1beacfc42c7 193 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller
MikamiUitOpen 4:c1beacfc42c7 194 R (*_membercaller)(void*, uintptr_t*); // registered membercaller function to convert back and call _m.member on _object
MikamiUitOpen 4:c1beacfc42c7 195 };
MikamiUitOpen 4:c1beacfc42c7 196
MikamiUitOpen 4:c1beacfc42c7 197 typedef FunctionPointerArg1<void, void> FunctionPointer;
MikamiUitOpen 4:c1beacfc42c7 198 typedef FunctionPointerArg1<void, int> event_callback_t;
MikamiUitOpen 4:c1beacfc42c7 199
MikamiUitOpen 4:c1beacfc42c7 200 } // namespace mbed
MikamiUitOpen 4:c1beacfc42c7 201
MikamiUitOpen 4:c1beacfc42c7 202 #endif