Diff: api/FunctionPointer.h

Revision:

7:4fdb3a44f646

Parent:

6:c2a3aa792960

Child:

11:f08e03081748

--- a/api/FunctionPointer.h	Thu Mar 31 12:18:08 2016 -0500
+++ b/api/FunctionPointer.h	Thu Mar 31 12:35:07 2016 -0500
@@ -13,744 +13,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#ifndef MBED_FUNC_H
-#define MBED_FUNC_H
+#ifndef MBED_FUNCTIONPOINTER_H
+#define MBED_FUNCTIONPOINTER_H
 
-#include <string.h>
-#include <stdint.h>
+#include "Function.h"
 
 namespace mbed {
 
-// Reusable Function class based on template specialization
-template <typename F>
-class Function;
-
-/** A class for storing and calling a pointer to a static or member function
- */
-template <typename R, typename A1, typename A2, typename A3, typename A4>
-class Function<R(A1, A2, A3, A4)> {
-public:
-    /** Create a Function, attaching a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    Function(R (*function)(A1, A2, A3, A4) = 0) {
-        attach(function);
-    }
-
-    /** Create a Function, attaching a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template<typename T>
-    Function(T *object, R (*function)(T*, A1, A2, A3, A4)) {
-        attach(object, function);
-    }
-
-    /** Create a Function, 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 member function to attach
-     */
-    template<typename T>
-    Function(T *object, R (T::*member)(A1, A2, A3, A4)) {
-        attach(object, member);
-    }
-
-    /** Create a Function from another Function
-     *
-     *  @param func The func to attach
-     */
-    Function(const Function<R(A1, A2, A3, A4)> &func) {
-        attach(func);
-    }
-
-    /** Attach a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    void attach(R (*function)(A1, A2, A3, A4)) {
-        _object = 0;
-        *reinterpret_cast<R (**)(A1)>(_function) = function;
-        _thunk = &Function::staticthunk;
-    }
-
-    /** Attach a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template <typename T>
-    void attach(T *object, R (*function)(A1, A2, A3, A4)) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (**)(T*, A1)>(_function) = function;
-        _thunk = &Function::boundthunk<T>;
-    }
-
-    /** 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 member function to attach
-     */
-    template<typename T>
-    void attach(T *object, R (T::*method)(A1, A2, A3, A4)) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (T::**)(A1)>(_function) = method;
-        _thunk = &Function::methodthunk<T>;
-    }
-
-    /** Attach a Function
-     *
-     *  @param func The func to attach
-     */
-    void attach(const Function<R(A1, A2, A3, A4)> &func) {
-        _object = func._object;
-        _function = func._function;
-        _thunk = func._thunk;
-    }
-
-    /** Call the attached static or member function
-     */
-    R call(A1 a1, A2 a2, A3 a3, A4 a4) {
-        return _thunk(_object, _function, a1, a2, a3, a4);
-    }
-
-    /** Get registered static function
-     */
-    R (*get_function(A1, A2, A3, A4))() {
-        return reinterpret_cast<R (*)(A1, A2, A3, A4)>(_object ? 0 : _function);
-    }
-
-#ifdef MBED_OPERATORS
-    R operator ()(A1 a1, A2 a2, A3 a3, A4 a4) {
-        return call(a1, a2, a3, a4);
-    }
-    operator bool(void) const {
-        return reinterpret_cast<bool>(_function);
-    }
-#endif
-private:
-    // Static thunks for various function types
-    static R staticthunk(void *eh, void *func, A1 a1, A2 a2, A3 a3, A4 a4) {
-        R (*f)(A1, A2, A3, A4) = reinterpret_cast<R (*)(A1, A2, A3, A4)>(func);
-        return f(a1, a2, a3, a4);
-    }
-
-    template<typename T>
-    static R boundthunk(void *object, void *func, A1 a1, A2 a2, A3 a3, A4 a4) {
-        T *o = static_cast<T*>(object);
-        R (*f)(T*, A1) = reinterpret_cast<R (*)(T*, A1)>(func);
-        return f(o, a1);
-    }
-
-    template<typename T>
-    static R methodthunk(void *object, void *member, A1 a1, A2 a2, A3 a3, A4 a4) {
-        T* o = static_cast<T*>(object);
-        R (T::**m)(A1, A2, A3, A4) = reinterpret_cast<R (T::**)(A1, A2, A3, A4)>(member);
-        return (o->**m)(a1, a2, a3, a4);
-    }
-
-    // Forward declaration of an unknown class
-    // this kind of declaration is authorized by the standard (see 8.3.3/2 of C++ 03 standard).  
-    // As a result, the compiler will allocate for UnknownFunctionMember_t the biggest size 
-    // and biggest alignment possible for member function. 
-    // This type can be used inside unions, it will help to provide the storage 
-    // with the proper size and alignment guarantees 
-    class UnknownClass;
-
-    // object this pointer
-    void *_object;
-
-    // aligned raw member function pointer storage - converted back by registered thunk
-    char _function[sizeof(void (UnknownClass::*)())];
-
-    // registered function to convert back and call _m.member on _object
-    R (*_thunk)(void*, void*, A1, A2, A3, A4); 
-};
-
-/** A class for storing and calling a pointer to a static or member function
- */
-template <typename R, typename A1, typename A2, typename A3>
-class Function<R(A1, A2, A3)> {
-public:
-    /** Create a Function, attaching a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    Function(R (*function)(A1, A2, A3) = 0) {
-        attach(function);
-    }
-
-    /** Create a Function, attaching a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template<typename T>
-    Function(T *object, R (*function)(T*, A1, A2, A3)) {
-        attach(object, function);
-    }
-
-    /** Create a Function, 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 member function to attach
-     */
-    template<typename T>
-    Function(T *object, R (T::*member)(A1, A2, A3)) {
-        attach(object, member);
-    }
-
-    /** Create a Function from another Function
-     *
-     *  @param func The func to attach
-     */
-    Function(const Function<R(A1, A2, A3)> &func) {
-        attach(func);
-    }
-
-    /** Attach a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    void attach(R (*function)(A1, A2, A3)) {
-        _object = 0;
-        *reinterpret_cast<R (**)(A1)>(_function) = function;
-        _thunk = &Function::staticthunk;
-    }
-
-    /** Attach a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template <typename T>
-    void attach(T *object, R (*function)(A1, A2, A3)) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (**)(T*, A1)>(_function) = function;
-        _thunk = &Function::boundthunk<T>;
-    }
-
-    /** 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 member function to attach
-     */
-    template<typename T>
-    void attach(T *object, R (T::*method)(A1, A2, A3)) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (T::**)(A1)>(_function) = method;
-        _thunk = &Function::methodthunk<T>;
-    }
-
-    /** Attach a Function
-     *
-     *  @param func The func to attach
-     */
-    void attach(const Function<R(A1, A2, A3)> &func) {
-        _object = func._object;
-        _function = func._function;
-        _thunk = func._thunk;
-    }
-
-    /** Call the attached static or member function
-     */
-    R call(A1 a1, A2 a2, A3 a3) {
-        return _thunk(_object, _function, a1, a2, a3);
-    }
-
-    /** Get registered static function
-     */
-    R (*get_function(A1, A2, A3))() {
-        return reinterpret_cast<R (*)(A1, A2, A3)>(_object ? 0 : _function);
-    }
-
-#ifdef MBED_OPERATORS
-    R operator ()(A1 a1, A2 a2, A3 a3) {
-        return call(a1, a2, a3);
-    }
-    operator bool(void) const {
-        return reinterpret_cast<bool>(_function);
-    }
-#endif
-private:
-    // Static thunks for various function types
-    static R staticthunk(void *eh, void *func, A1 a1, A2 a2, A3 a3) {
-        R (*f)(A1, A2, A3) = reinterpret_cast<R (*)(A1, A2, A3)>(func);
-        return f(a1, a2, a3);
-    }
-
-    template<typename T>
-    static R boundthunk(void *object, void *func, A1 a1, A2 a2, A3 a3) {
-        T *o = static_cast<T*>(object);
-        R (*f)(T*, A1) = reinterpret_cast<R (*)(T*, A1)>(func);
-        return f(o, a1);
-    }
-
-    template<typename T>
-    static R methodthunk(void *object, void *member, A1 a1, A2 a2, A3 a3) {
-        T* o = static_cast<T*>(object);
-        R (T::**m)(A1, A2, A3) = reinterpret_cast<R (T::**)(A1, A2, A3)>(member);
-        return (o->**m)(a1, a2, a3);
-    }
-
-    // Forward declaration of an unknown class
-    // this kind of declaration is authorized by the standard (see 8.3.3/2 of C++ 03 standard).  
-    // As a result, the compiler will allocate for UnknownFunctionMember_t the biggest size 
-    // and biggest alignment possible for member function. 
-    // This type can be used inside unions, it will help to provide the storage 
-    // with the proper size and alignment guarantees 
-    class UnknownClass;
-
-    // object this pointer
-    void *_object;
-
-    // aligned raw member function pointer storage - converted back by registered thunk
-    char _function[sizeof(void (UnknownClass::*)())];
-
-    // registered function to convert back and call _m.member on _object
-    R (*_thunk)(void*, void*, A1, A2, A3); 
-};
-
-/** A class for storing and calling a pointer to a static or member function
- */
-template <typename R, typename A1, typename A2>
-class Function<R(A1, A2)> {
-public:
-    /** Create a Function, attaching a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    Function(R (*function)(A1, A2) = 0) {
-        attach(function);
-    }
-
-    /** Create a Function, attaching a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template<typename T>
-    Function(T *object, R (*function)(T*, A1, A2)) {
-        attach(object, function);
-    }
-
-    /** Create a Function, 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 member function to attach
-     */
-    template<typename T>
-    Function(T *object, R (T::*member)(A1, A2)) {
-        attach(object, member);
-    }
-
-    /** Create a Function from another Function
-     *
-     *  @param func The func to attach
-     */
-    Function(const Function<R(A1, A2)> &func) {
-        attach(func);
-    }
-
-    /** Attach a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    void attach(R (*function)(A1, A2)) {
-        _object = 0;
-        *reinterpret_cast<R (**)(A1)>(_function) = function;
-        _thunk = &Function::staticthunk;
-    }
-
-    /** Attach a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template <typename T>
-    void attach(T *object, R (*function)(A1, A2)) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (**)(T*, A1)>(_function) = function;
-        _thunk = &Function::boundthunk<T>;
-    }
-
-    /** 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 member function to attach
-     */
-    template<typename T>
-    void attach(T *object, R (T::*method)(A1, A2)) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (T::**)(A1)>(_function) = method;
-        _thunk = &Function::methodthunk<T>;
-    }
-
-    /** Attach a Function
-     *
-     *  @param func The func to attach
-     */
-    void attach(const Function<R(A1, A2)> &func) {
-        _object = func._object;
-        _function = func._function;
-        _thunk = func._thunk;
-    }
-
-    /** Call the attached static or member function
-     */
-    R call(A1 a1, A2 a2) {
-        return _thunk(_object, _function, a1, a2);
-    }
-
-    /** Get registered static function
-     */
-    R (*get_function(A1, A2))() {
-        return reinterpret_cast<R (*)(A1, A2)>(_object ? 0 : _function);
-    }
-
-#ifdef MBED_OPERATORS
-    R operator ()(A1 a1, A2 a2) {
-        return call(a1, a2);
-    }
-    operator bool(void) const {
-        return reinterpret_cast<bool>(_function);
-    }
-#endif
-private:
-    // Static thunks for various function types
-    static R staticthunk(void *eh, void *func, A1 a1, A2 a2) {
-        R (*f)(A1, A2) = reinterpret_cast<R (*)(A1, A2)>(func);
-        return f(a1, a2);
-    }
-
-    template<typename T>
-    static R boundthunk(void *object, void *func, A1 a1, A2 a2) {
-        T *o = static_cast<T*>(object);
-        R (*f)(T*, A1) = reinterpret_cast<R (*)(T*, A1)>(func);
-        return f(o, a1);
-    }
-
-    template<typename T>
-    static R methodthunk(void *object, void *member, A1 a1, A2 a2) {
-        T* o = static_cast<T*>(object);
-        R (T::**m)(A1, A2) = reinterpret_cast<R (T::**)(A1, A2)>(member);
-        return (o->**m)(a1, a2);
-    }
-
-    // Forward declaration of an unknown class
-    // this kind of declaration is authorized by the standard (see 8.3.3/2 of C++ 03 standard).  
-    // As a result, the compiler will allocate for UnknownFunctionMember_t the biggest size 
-    // and biggest alignment possible for member function. 
-    // This type can be used inside unions, it will help to provide the storage 
-    // with the proper size and alignment guarantees 
-    class UnknownClass;
-
-    // object this pointer
-    void *_object;
-
-    // aligned raw member function pointer storage - converted back by registered thunk
-    char _function[sizeof(void (UnknownClass::*)())];
-
-    // registered function to convert back and call _m.member on _object
-    R (*_thunk)(void*, void*, A1, A2); 
-};
-
-/** A class for storing and calling a pointer to a static or member function
- */
-template <typename R, typename A1>
-class Function<R(A1)> {
-public:
-    /** Create a Function, attaching a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    Function(R (*function)(A1) = 0) {
-        attach(function);
-    }
-
-    /** Create a Function, attaching a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template<typename T>
-    Function(T *object, R (*function)(T*, A1)) {
-        attach(object, function);
-    }
-
-    /** Create a Function, 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 member function to attach
-     */
-    template<typename T>
-    Function(T *object, R (T::*member)(A1)) {
-        attach(object, member);
-    }
-
-    /** Create a Function from another Function
-     *
-     *  @param func The func to attach
-     */
-    Function(const Function<R(A1)> &func) {
-        attach(func);
-    }
-
-    /** Attach a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    void attach(R (*function)(A1)) {
-        _object = 0;
-        *reinterpret_cast<R (**)(A1)>(_function) = function;
-        _thunk = &Function::staticthunk;
-    }
-
-    /** Attach a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template <typename T>
-    void attach(T *object, R (*function)(A1)) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (**)(T*, A1)>(_function) = function;
-        _thunk = &Function::boundthunk<T>;
-    }
-
-    /** 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 member function to attach
-     */
-    template<typename T>
-    void attach(T *object, R (T::*method)(A1)) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (T::**)(A1)>(_function) = method;
-        _thunk = &Function::methodthunk<T>;
-    }
-
-    /** Attach a Function
-     *
-     *  @param func The func to attach
-     */
-    void attach(const Function<R(A1)> &func) {
-        _object = func._object;
-        _function = func._function;
-        _thunk = func._thunk;
-    }
-
-    /** Call the attached static or member function
-     */
-    R call(A1 a1) {
-        return _thunk(_object, _function, a1);
-    }
-
-    /** Get registered static function
-     */
-    R (*get_function(A1))() {
-        return reinterpret_cast<R (*)(A1)>(_object ? 0 : _function);
-    }
-
-#ifdef MBED_OPERATORS
-    R operator ()(A1 a1) {
-        return call(a1);
-    }
-    operator bool(void) const {
-        return reinterpret_cast<bool>(_function);
-    }
-#endif
-private:
-    // Static thunks for various function types
-    static R staticthunk(void *eh, void *func, A1 a1) {
-        R (*f)(A1) = reinterpret_cast<R (*)(A1)>(func);
-        return f(a1);
-    }
-
-    template<typename T>
-    static R boundthunk(void *object, void *func, A1 a1) {
-        T *o = static_cast<T*>(object);
-        R (*f)(T*, A1) = reinterpret_cast<R (*)(T*, A1)>(func);
-        return f(o, a1);
-    }
-
-    template<typename T>
-    static R methodthunk(void *object, void *member, A1 a1) {
-        T* o = static_cast<T*>(object);
-        R (T::**m)(A1) = reinterpret_cast<R (T::**)(A1)>(member);
-        return (o->**m)(a1);
-    }
-
-    // Forward declaration of an unknown class
-    // this kind of declaration is authorized by the standard (see 8.3.3/2 of C++ 03 standard).  
-    // As a result, the compiler will allocate for UnknownFunctionMember_t the biggest size 
-    // and biggest alignment possible for member function. 
-    // This type can be used inside unions, it will help to provide the storage 
-    // with the proper size and alignment guarantees 
-    class UnknownClass;
-
-    // object this pointer
-    void *_object;
-
-    // aligned raw member function pointer storage - converted back by registered thunk
-    char _function[sizeof(void (UnknownClass::*)())];
-
-    // registered function to convert back and call _m.member on _object
-    R (*_thunk)(void*, void*, A1); 
-};
-
-/** A class for storing and calling a pointer to a static or member function
- */
-template <typename R>
-class Function<R()> {
-public:
-    /** Create a Function, attaching a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    Function(R (*function)() = 0) {
-        attach(function);
-    }
-
-    /** Create a Function, attaching a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template<typename T>
-    Function(T *object, R (*function)(T*)) {
-        attach(object, function);
-    }
-
-    /** Create a Function, 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 member function to attach
-     */
-    template<typename T>
-    Function(T *object, R (T::*member)()) {
-        attach(object, member);
-    }
-
-    /** Create a Function from another Function
-     *
-     *  @param func The func to attach
-     */
-    Function(const Function<R()> &func) {
-        attach(func);
-    }
-
-    /** Attach a static function
-     *
-     *  @param function The static function to attach (default is none)
-     */
-    void attach(R (*function)()) {
-        _object = 0;
-        *reinterpret_cast<R (**)()>(_function) = function;
-        _thunk = &Function::staticthunk;
-    }
-
-    /** Attach a static function with bound pointer
-     *
-     *  @param object Pointer to object to bind to function
-     *  @param function The static function to attach
-     */
-    template <typename T>
-    void attach(T *object, R (*function)()) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (**)(T*)>(_function) = function;
-        _thunk = &Function::boundthunk<T>;
-    }
-
-    /** 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 member function to attach
-     */
-    template<typename T>
-    void attach(T *object, R (T::*method)()) {
-        _object = static_cast<void*>(object);
-        *reinterpret_cast<R (T::**)()>(_function) = method;
-        _thunk = &Function::methodthunk<T>;
-    }
-
-    /** Attach a Function
-     *
-     *  @param func The func to attach
-     */
-    void attach(const Function<R()> &func) {
-        _object = func._object;
-        _function = func._function;
-        _thunk = func._thunk;
-    }
-
-    /** Call the attached static or member function
-     */
-    R call() {
-        return _thunk(_object, _function);
-    }
-
-    /** Get registered static function
-     */
-    R (*get_function())() {
-        return reinterpret_cast<R (*)()>(_object ? 0 : _function);
-    }
-
-#ifdef MBED_OPERATORS
-    R operator ()() {
-        return call();
-    }
-    operator bool(void) const {
-        return reinterpret_cast<bool>(_function);
-    }
-#endif
-private:
-    // Static thunks for various function types
-    static R staticthunk(void *eh, void *func) {
-        R (*f)() = reinterpret_cast<R (*)()>(func);
-        return f();
-    }
-
-    template<typename T>
-    static R boundthunk(void *object, void *func) {
-        T *o = static_cast<T*>(object);
-        R (*f)(T*) = reinterpret_cast<R (*)(T*)>(func);
-        return f(o);
-    }
-
-    template<typename T>
-    static R methodthunk(void *object, void *member) {
-        T* o = static_cast<T*>(object);
-        R (T::**m)() = reinterpret_cast<R (T::**)()>(member);
-        return (o->**m)();
-    }
-
-    // Forward declaration of an unknown class
-    // this kind of declaration is authorized by the standard (see 8.3.3/2 of C++ 03 standard).  
-    // As a result, the compiler will allocate for UnknownFunctionMember_t the biggest size 
-    // and biggest alignment possible for member function. 
-    // This type can be used inside unions, it will help to provide the storage 
-    // with the proper size and alignment guarantees 
-    class UnknownClass;
-
-    // object this pointer
-    void *_object;
-
-    // aligned raw member function pointer storage - converted back by registered thunk
-    char _function[sizeof(void (UnknownClass::*)())];
-
-    // registered function to convert back and call _m.member on _object
-    R (*_thunk)(void*, void*); 
-};
-
 // Overloads for backwards compatibility
 template <typename R, typename A1>
-class FunctionPointerArg1 : public Function<R(A1)> {};
+class FunctionArg1 : public Function<R(A1)> {};
 
 template <typename R>
-class FunctionPointerArg1<R, void> : public Function<R()> {};
+class FunctionArg1<R, void> : public Function<R()> {};
 
 typedef Function<void()> FunctionPointer;
 typedef Function<void(int)> event_callback_t;