Pokitto Community Team / Pokitto_

PokittoLib with changes to lcd refresh etc.

Dependents:   Pokittris

Fork of Pokitto by Pokitto Community Team

This is a fork by user @Spinal, and is used in Pokittris for testing. Do not import this to your own program.

mbed-pokitto/api/FunctionPointer.h@5:7e5c566b1760, 2017-10-07 (annotated)

Committer:
Pokitto
Date:
Sat Oct 07 21:31:12 2017 +0000
Revision:
5:7e5c566b1760
mbed-pokitto integrated

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Pokitto 5:7e5c566b1760 1 /* mbed Microcontroller Library
Pokitto 5:7e5c566b1760 2 * Copyright (c) 2006-2015 ARM Limited
Pokitto 5:7e5c566b1760 3 *
Pokitto 5:7e5c566b1760 4 * Licensed under the Apache License, Version 2.0 (the "License");
Pokitto 5:7e5c566b1760 5 * you may not use this file except in compliance with the License.
Pokitto 5:7e5c566b1760 6 * You may obtain a copy of the License at
Pokitto 5:7e5c566b1760 7 *
Pokitto 5:7e5c566b1760 8 * http://www.apache.org/licenses/LICENSE-2.0
Pokitto 5:7e5c566b1760 9 *
Pokitto 5:7e5c566b1760 10 * Unless required by applicable law or agreed to in writing, software
Pokitto 5:7e5c566b1760 11 * distributed under the License is distributed on an "AS IS" BASIS,
Pokitto 5:7e5c566b1760 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Pokitto 5:7e5c566b1760 13 * See the License for the specific language governing permissions and
Pokitto 5:7e5c566b1760 14 * limitations under the License.
Pokitto 5:7e5c566b1760 15 */
Pokitto 5:7e5c566b1760 16 #ifndef MBED_FUNCTIONPOINTER_H
Pokitto 5:7e5c566b1760 17 #define MBED_FUNCTIONPOINTER_H
Pokitto 5:7e5c566b1760 18
Pokitto 5:7e5c566b1760 19 #include <string.h>
Pokitto 5:7e5c566b1760 20 #include <stdint.h>
Pokitto 5:7e5c566b1760 21
Pokitto 5:7e5c566b1760 22 namespace mbed {
Pokitto 5:7e5c566b1760 23
Pokitto 5:7e5c566b1760 24 /* If we had variaditic templates, this wouldn't be a problem, but until C++11 is enabled, we are stuck with multiple classes... */
Pokitto 5:7e5c566b1760 25
Pokitto 5:7e5c566b1760 26 /** A class for storing and calling a pointer to a static or member function
Pokitto 5:7e5c566b1760 27 */
Pokitto 5:7e5c566b1760 28 template <typename R, typename A1>
Pokitto 5:7e5c566b1760 29 class FunctionPointerArg1{
Pokitto 5:7e5c566b1760 30 public:
Pokitto 5:7e5c566b1760 31 /** Create a FunctionPointer, attaching a static function
Pokitto 5:7e5c566b1760 32 *
Pokitto 5:7e5c566b1760 33 * @param function The static function to attach (default is none)
Pokitto 5:7e5c566b1760 34 */
Pokitto 5:7e5c566b1760 35 FunctionPointerArg1(R (*function)(A1) = 0) {
Pokitto 5:7e5c566b1760 36 attach(function);
Pokitto 5:7e5c566b1760 37 }
Pokitto 5:7e5c566b1760 38
Pokitto 5:7e5c566b1760 39 /** Create a FunctionPointer, attaching a member function
Pokitto 5:7e5c566b1760 40 *
Pokitto 5:7e5c566b1760 41 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
Pokitto 5:7e5c566b1760 42 * @param function The address of the member function to attach
Pokitto 5:7e5c566b1760 43 */
Pokitto 5:7e5c566b1760 44 template<typename T>
Pokitto 5:7e5c566b1760 45 FunctionPointerArg1(T *object, R (T::*member)(A1)) {
Pokitto 5:7e5c566b1760 46 attach(object, member);
Pokitto 5:7e5c566b1760 47 }
Pokitto 5:7e5c566b1760 48
Pokitto 5:7e5c566b1760 49 /** Attach a static function
Pokitto 5:7e5c566b1760 50 *
Pokitto 5:7e5c566b1760 51 * @param function The static function to attach (default is none)
Pokitto 5:7e5c566b1760 52 */
Pokitto 5:7e5c566b1760 53 void attach(R (*function)(A1)) {
Pokitto 5:7e5c566b1760 54 _p.function = function;
Pokitto 5:7e5c566b1760 55 _membercaller = 0;
Pokitto 5:7e5c566b1760 56 }
Pokitto 5:7e5c566b1760 57
Pokitto 5:7e5c566b1760 58 /** Attach a member function
Pokitto 5:7e5c566b1760 59 *
Pokitto 5:7e5c566b1760 60 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
Pokitto 5:7e5c566b1760 61 * @param function The address of the member function to attach
Pokitto 5:7e5c566b1760 62 */
Pokitto 5:7e5c566b1760 63 template<typename T>
Pokitto 5:7e5c566b1760 64 void attach(T *object, R (T::*member)(A1)) {
Pokitto 5:7e5c566b1760 65 _p.object = static_cast<void*>(object);
Pokitto 5:7e5c566b1760 66 *reinterpret_cast<R (T::**)(A1)>(_member) = member;
Pokitto 5:7e5c566b1760 67 _membercaller = &FunctionPointerArg1::membercaller<T>;
Pokitto 5:7e5c566b1760 68 }
Pokitto 5:7e5c566b1760 69
Pokitto 5:7e5c566b1760 70 /** Call the attached static or member function
Pokitto 5:7e5c566b1760 71 */
Pokitto 5:7e5c566b1760 72 R call(A1 a) {
Pokitto 5:7e5c566b1760 73 if (_membercaller == 0 && _p.function) {
Pokitto 5:7e5c566b1760 74 return _p.function(a);
Pokitto 5:7e5c566b1760 75 } else if (_membercaller && _p.object) {
Pokitto 5:7e5c566b1760 76 return _membercaller(_p.object, _member, a);
Pokitto 5:7e5c566b1760 77 }
Pokitto 5:7e5c566b1760 78 return (R)0;
Pokitto 5:7e5c566b1760 79 }
Pokitto 5:7e5c566b1760 80
Pokitto 5:7e5c566b1760 81 /** Get registered static function
Pokitto 5:7e5c566b1760 82 */
Pokitto 5:7e5c566b1760 83 R(*get_function(A1))() {
Pokitto 5:7e5c566b1760 84 return _membercaller ? (R(*)(A1))0 : (R(*)(A1))_p.function;
Pokitto 5:7e5c566b1760 85 }
Pokitto 5:7e5c566b1760 86
Pokitto 5:7e5c566b1760 87 #ifdef MBED_OPERATORS
Pokitto 5:7e5c566b1760 88 R operator ()(A1 a) {
Pokitto 5:7e5c566b1760 89 return call(a);
Pokitto 5:7e5c566b1760 90 }
Pokitto 5:7e5c566b1760 91 operator bool(void) const {
Pokitto 5:7e5c566b1760 92 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL;
Pokitto 5:7e5c566b1760 93 }
Pokitto 5:7e5c566b1760 94 #endif
Pokitto 5:7e5c566b1760 95 private:
Pokitto 5:7e5c566b1760 96 template<typename T>
Pokitto 5:7e5c566b1760 97 static R membercaller(void *object, uintptr_t *member, A1 a) {
Pokitto 5:7e5c566b1760 98 T* o = static_cast<T*>(object);
Pokitto 5:7e5c566b1760 99 R (T::**m)(A1) = reinterpret_cast<R (T::**)(A1)>(member);
Pokitto 5:7e5c566b1760 100 return (o->**m)(a);
Pokitto 5:7e5c566b1760 101 }
Pokitto 5:7e5c566b1760 102
Pokitto 5:7e5c566b1760 103 union {
Pokitto 5:7e5c566b1760 104 R (*function)(A1); // static function pointer
Pokitto 5:7e5c566b1760 105 void *object; // object this pointer
Pokitto 5:7e5c566b1760 106 } _p;
Pokitto 5:7e5c566b1760 107 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller
Pokitto 5:7e5c566b1760 108 R (*_membercaller)(void*, uintptr_t*, A1); // registered membercaller function to convert back and call _m.member on _object
Pokitto 5:7e5c566b1760 109 };
Pokitto 5:7e5c566b1760 110
Pokitto 5:7e5c566b1760 111 /** A class for storing and calling a pointer to a static or member function (R ()(void))
Pokitto 5:7e5c566b1760 112 */
Pokitto 5:7e5c566b1760 113 template <typename R>
Pokitto 5:7e5c566b1760 114 class FunctionPointerArg1<R, void>{
Pokitto 5:7e5c566b1760 115 public:
Pokitto 5:7e5c566b1760 116 /** Create a FunctionPointer, attaching a static function
Pokitto 5:7e5c566b1760 117 *
Pokitto 5:7e5c566b1760 118 * @param function The static function to attach (default is none)
Pokitto 5:7e5c566b1760 119 */
Pokitto 5:7e5c566b1760 120 FunctionPointerArg1(R (*function)(void) = 0) {
Pokitto 5:7e5c566b1760 121 attach(function);
Pokitto 5:7e5c566b1760 122 }
Pokitto 5:7e5c566b1760 123
Pokitto 5:7e5c566b1760 124 /** Create a FunctionPointer, attaching a member function
Pokitto 5:7e5c566b1760 125 *
Pokitto 5:7e5c566b1760 126 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
Pokitto 5:7e5c566b1760 127 * @param function The address of the void member function to attach
Pokitto 5:7e5c566b1760 128 */
Pokitto 5:7e5c566b1760 129 template<typename T>
Pokitto 5:7e5c566b1760 130 FunctionPointerArg1(T *object, R (T::*member)(void)) {
Pokitto 5:7e5c566b1760 131 attach(object, member);
Pokitto 5:7e5c566b1760 132 }
Pokitto 5:7e5c566b1760 133
Pokitto 5:7e5c566b1760 134 /** Attach a static function
Pokitto 5:7e5c566b1760 135 *
Pokitto 5:7e5c566b1760 136 * @param function The void static function to attach (default is none)
Pokitto 5:7e5c566b1760 137 */
Pokitto 5:7e5c566b1760 138 void attach(R (*function)(void)) {
Pokitto 5:7e5c566b1760 139 _p.function = function;
Pokitto 5:7e5c566b1760 140 _membercaller = 0;
Pokitto 5:7e5c566b1760 141 }
Pokitto 5:7e5c566b1760 142
Pokitto 5:7e5c566b1760 143 /** Attach a member function
Pokitto 5:7e5c566b1760 144 *
Pokitto 5:7e5c566b1760 145 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
Pokitto 5:7e5c566b1760 146 * @param function The address of the void member function to attach
Pokitto 5:7e5c566b1760 147 */
Pokitto 5:7e5c566b1760 148 template<typename T>
Pokitto 5:7e5c566b1760 149 void attach(T *object, R (T::*member)(void)) {
Pokitto 5:7e5c566b1760 150 _p.object = static_cast<void*>(object);
Pokitto 5:7e5c566b1760 151 *reinterpret_cast<R (T::**)(void)>(_member) = member;
Pokitto 5:7e5c566b1760 152 _membercaller = &FunctionPointerArg1::membercaller<T>;
Pokitto 5:7e5c566b1760 153 }
Pokitto 5:7e5c566b1760 154
Pokitto 5:7e5c566b1760 155 /** Call the attached static or member function
Pokitto 5:7e5c566b1760 156 */
Pokitto 5:7e5c566b1760 157 R call(){
Pokitto 5:7e5c566b1760 158 if (_membercaller == 0 && _p.function) {
Pokitto 5:7e5c566b1760 159 return _p.function();
Pokitto 5:7e5c566b1760 160 } else if (_membercaller && _p.object) {
Pokitto 5:7e5c566b1760 161 return _membercaller(_p.object, _member);
Pokitto 5:7e5c566b1760 162 }
Pokitto 5:7e5c566b1760 163 return (R)0;
Pokitto 5:7e5c566b1760 164 }
Pokitto 5:7e5c566b1760 165
Pokitto 5:7e5c566b1760 166 /** Get registered static function
Pokitto 5:7e5c566b1760 167 */
Pokitto 5:7e5c566b1760 168 R(*get_function())() {
Pokitto 5:7e5c566b1760 169 return _membercaller ? (R(*)())0 : (R(*)())_p.function;
Pokitto 5:7e5c566b1760 170 }
Pokitto 5:7e5c566b1760 171
Pokitto 5:7e5c566b1760 172 #ifdef MBED_OPERATORS
Pokitto 5:7e5c566b1760 173 R operator ()(void) {
Pokitto 5:7e5c566b1760 174 return call();
Pokitto 5:7e5c566b1760 175 }
Pokitto 5:7e5c566b1760 176 operator bool(void) const {
Pokitto 5:7e5c566b1760 177 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL;
Pokitto 5:7e5c566b1760 178 }
Pokitto 5:7e5c566b1760 179 #endif
Pokitto 5:7e5c566b1760 180
Pokitto 5:7e5c566b1760 181 private:
Pokitto 5:7e5c566b1760 182 template<typename T>
Pokitto 5:7e5c566b1760 183 static R membercaller(void *object, uintptr_t *member) {
Pokitto 5:7e5c566b1760 184 T* o = static_cast<T*>(object);
Pokitto 5:7e5c566b1760 185 R (T::**m)(void) = reinterpret_cast<R (T::**)(void)>(member);
Pokitto 5:7e5c566b1760 186 return (o->**m)();
Pokitto 5:7e5c566b1760 187 }
Pokitto 5:7e5c566b1760 188
Pokitto 5:7e5c566b1760 189 union {
Pokitto 5:7e5c566b1760 190 R (*function)(void); // static function pointer
Pokitto 5:7e5c566b1760 191 void *object; // object this pointer
Pokitto 5:7e5c566b1760 192 } _p;
Pokitto 5:7e5c566b1760 193 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller
Pokitto 5:7e5c566b1760 194 R (*_membercaller)(void*, uintptr_t*); // registered membercaller function to convert back and call _m.member on _object
Pokitto 5:7e5c566b1760 195 };
Pokitto 5:7e5c566b1760 196
Pokitto 5:7e5c566b1760 197 typedef FunctionPointerArg1<void, void> FunctionPointer;
Pokitto 5:7e5c566b1760 198 typedef FunctionPointerArg1<void, int> event_callback_t;
Pokitto 5:7e5c566b1760 199
Pokitto 5:7e5c566b1760 200 } // namespace mbed
Pokitto 5:7e5c566b1760 201
Pokitto 5:7e5c566b1760 202 #endif