add "LE Device Address" 0x1B to advertising data types
Fork of BLE_API by
Diff: ble/FunctionPointerWithContext.h
- Revision:
- 969:61f13bc8edbf
- Parent:
- 966:9451b90bbb66
- Child:
- 970:b3e45745026d
--- a/ble/FunctionPointerWithContext.h Thu Nov 26 12:52:35 2015 +0000 +++ b/ble/FunctionPointerWithContext.h Thu Nov 26 12:52:35 2015 +0000 @@ -18,14 +18,16 @@ #define MBED_FUNCTIONPOINTER_WITH_CONTEXT_H #include <string.h> +#include "SafeBool.h" /** A class for storing and calling a pointer to a static or member void function * that takes a context. */ template <typename ContextType> -class FunctionPointerWithContext { +class FunctionPointerWithContext : public SafeBool<FunctionPointerWithContext<ContextType> > { public: typedef FunctionPointerWithContext<ContextType> *pFunctionPointerWithContext_t; + typedef const FunctionPointerWithContext<ContextType> *cpFunctionPointerWithContext_t; typedef void (*pvoidfcontext_t)(ContextType context); /** Create a FunctionPointerWithContext, attaching a static function. @@ -33,7 +35,7 @@ * @param function The void static function to attach (default is none). */ FunctionPointerWithContext(void (*function)(ContextType context) = NULL) : - _function(NULL), _caller(NULL), _next(NULL) { + _memberFunctionAndPointer(), _caller(NULL), _next(NULL) { attach(function); } @@ -48,6 +50,17 @@ attach(object, member); } + FunctionPointerWithContext(const FunctionPointerWithContext& that) : + _memberFunctionAndPointer(that._memberFunctionAndPointer), _caller(that._caller), _next(NULL) { + } + + FunctionPointerWithContext& operator=(const FunctionPointerWithContext& that) { + _memberFunctionAndPointer = that._memberFunctionAndPointer; + _caller = that._caller; + _next = NULL; + return *this; + } + /** Attach a static function. * * @param function The void static function to attach (default is none). @@ -73,13 +86,29 @@ * 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) { + void call(ContextType context) const { _caller(this, context); + } + + /** + * @brief Same as above + */ + void operator()(ContextType context) const { + call(context); + } - /* Propagate the call to next in the chain. */ - if (_next) { - _next->call(context); - } + /** Same as above, workaround for mbed os FunctionPointer implementation. */ + void call(ContextType context) { + ((const FunctionPointerWithContext*) this)->call(context); + } + + typedef void (FunctionPointerWithContext::*bool_type)() const; + + /** + * implementation of safe bool operator + */ + bool toBool() const { + return (_function || _memberFunctionAndPointer._object); } /** @@ -101,9 +130,18 @@ return (pvoidfcontext_t)_function; } + friend bool operator==(const FunctionPointerWithContext& lhs, const FunctionPointerWithContext& rhs) { + return rhs._caller == lhs._caller && + memcmp( + &rhs._memberFunctionAndPointer, + &lhs._memberFunctionAndPointer, + sizeof(rhs._memberFunctionAndPointer) + ) == 0; + } + private: template<typename T> - static void membercaller(pFunctionPointerWithContext_t self, ContextType context) { + static void membercaller(cpFunctionPointerWithContext_t self, ContextType context) { if (self->_memberFunctionAndPointer._object) { T *o = static_cast<T *>(self->_memberFunctionAndPointer._object); void (T::*m)(ContextType); @@ -112,7 +150,7 @@ } } - static void functioncaller(pFunctionPointerWithContext_t self, ContextType context) { + static void functioncaller(cpFunctionPointerWithContext_t self, ContextType context) { if (self->_function) { self->_function(context); } @@ -141,10 +179,10 @@ * object this pointer and pointer to member - * _memberFunctionAndPointer._object will be NULL if none attached */ - MemberFunctionAndPtr _memberFunctionAndPointer; + mutable MemberFunctionAndPtr _memberFunctionAndPointer; }; - void (*_caller)(FunctionPointerWithContext*, ContextType); + void (*_caller)(const FunctionPointerWithContext*, ContextType); pFunctionPointerWithContext_t _next; /**< Optional link to make a chain out of functionPointers. This * allows chaining function pointers without requiring @@ -152,4 +190,23 @@ * 'CallChain' as an alternative. */ }; +/** + * @brief Create a new FunctionPointerWithContext which bind an instance and a + * a member function together. + * @details This little helper is a just here to eliminate the need to write the + * FunctionPointerWithContext type each time you want to create one by kicking + * automatic type deduction of function templates. With this function, it is easy + * to write only one entry point for functions which expect a FunctionPointer + * in parameters. + * + * @param object to bound with member function + * @param member The member function called + * @return a new FunctionPointerWithContext + */ +template<typename T, typename ContextType> +FunctionPointerWithContext<ContextType> makeFunctionPointer(T *object, void (T::*member)(ContextType context)) +{ + return FunctionPointerWithContext<ContextType>(object, member); +} + #endif // ifndef MBED_FUNCTIONPOINTER_WITH_CONTEXT_H \ No newline at end of file