Diff: public/FunctionPointerWithContext.h

Revision:

716:11b41f651697

Parent:

715:6d415ac147aa

Child:

717:3129b149a6b2

--- a/public/FunctionPointerWithContext.h	Thu Jul 02 09:06:11 2015 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,129 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MBED_FUNCTIONPOINTER_WITH_CONTEXT_H
-#define MBED_FUNCTIONPOINTER_WITH_CONTEXT_H
-
-#include <string.h>
-
-
-/** A class for storing and calling a pointer to a static or member void function
- *  which takes a context.
- */
-template <typename ContextType>
-class FunctionPointerWithContext {
-public:
-    typedef FunctionPointerWithContext<ContextType> *pFunctionPointerWithContext_t;
-    typedef void (*pvoidfcontext_t)(ContextType context);
-
-    /** Create a FunctionPointerWithContext, attaching a static function
-     *
-     *  @param function The void static function to attach (default is none)
-     */
-    FunctionPointerWithContext(void (*function)(ContextType context) = NULL) :
-        _function(NULL), _object(NULL), _member(), _membercaller(NULL), _next(NULL) {
-        attach(function);
-    }
-
-    /** Create a FunctionPointerWithContext, attaching a member function
-     *
-     *  @param object The object pointer to invoke the member function on (i.e. the this pointer)
-     *  @param function The address of the void member function to attach
-     */
-    template<typename T>
-    FunctionPointerWithContext(T *object, void (T::*member)(ContextType context)) :
-        _function(NULL), _object(NULL), _member(), _membercaller(NULL), _next(NULL) {
-        attach(object, member);
-    }
-
-    /** Attach a static function
-     *
-     *  @param function The void static function to attach (default is none)
-     */
-    void attach(void (*function)(ContextType context) = NULL) {
-        _function = function;
-    }
-
-    /** Attach a member function
-     *
-     *  @param object The object pointer to invoke the member function on (i.e. the this pointer)
-     *  @param function The address of the void member function to attach
-     */
-    template<typename T>
-    void attach(T *object, void (T::*member)(ContextType context)) {
-        _object = static_cast<void *>(object);
-        memcpy(_member, (char *)&member, sizeof(member));
-        _membercaller = &FunctionPointerWithContext::membercaller<T>;
-    }
-
-    /** Call the attached static or member function; and if there are chained
-     *  FunctionPointers their callbacks are invoked as well.
-     *  @Note: all chained callbacks stack up; so hopefully there won't be too
-     *  many FunctionPointers in a chain. */
-    void call(ContextType context) {
-        if (_function) {
-            _function(context);
-        } else if (_object && _membercaller) {
-            _membercaller(_object, _member, context);
-        }
-
-        /* Propagate the call to next in the chain. */
-        if (_next) {
-            _next->call(context);
-        }
-    }
-
-    /**
-     * Setup an external FunctionPointer as a next in the chain of related
-     * callbacks. Invoking call() on the head FunctionPointer will invoke all
-     * chained callbacks.
-     *
-     * Refer to 'CallChain' as an alternative.
-     */
-    void chainAsNext(pFunctionPointerWithContext_t next) {
-        _next = next;
-    }
-
-    pFunctionPointerWithContext_t getNext(void) const {
-        return _next;
-    }
-
-    pvoidfcontext_t get_function() const {
-        return (pvoidfcontext_t)_function;
-    }
-
-private:
-    template<typename T>
-    static void membercaller(void *object, char *member, ContextType context) {
-        T *o = static_cast<T *>(object);
-        void (T::*m)(ContextType);
-        memcpy((char *)&m, member, sizeof(m));
-        (o->*m)(context);
-    }
-
-    void (*_function)(ContextType context);             /**< static function pointer - NULL if none attached */
-    void *_object;                                      /**< object this pointer - NULL if none attached */
-    char _member[16];                                   /**< raw member function pointer storage - converted back by
-                                                         *   registered _membercaller */
-    void (*_membercaller)(void *, char *, ContextType); /**< registered membercaller function to convert back and call
-                                                         *   _member on _object passing the context. */
-    pFunctionPointerWithContext_t _next;                /**< Optional link to make a chain out of functionPointers; this
-                                                         *   allows chaining function pointers without requiring
-                                                         *   external memory to manage the chain. Also refer to
-                                                         *   'CallChain' as an alternative. */
-};
-
-#endif // ifndef MBED_FUNCTIONPOINTER_WITH_CONTEXT_H
\ No newline at end of file