你如何为inheritance的c ++类编写ac包装器

我只是想知道是否有办法为具有inheritance的c ++类创建ac包装器API。

考虑以下：

class sampleClass1 : public sampleClass{ public: int get() { return this.data *2; }; void set(int data); } class sampleClass : public sample{ public: int get() { return this.data; } void set(int data) {this.data = data; } } class sample { public: virtual int get(); virtual void set(int data); private: int data; } 

我如何包装sampleClass1以使其在ac上下文中工作？

谢谢，

Answer 1

首先，你的sample应该真正得到一个合适的virtual dtor。

接下来，只需为每个函数添加一个带C-binding的自由函数，该函数是接口的一部分，只需委托：

“sample.h”

 #ifdef __cplusplus extern "C" { #endif typedef struct sample sample; sample* sample_create(); sample* sample_create0(); sample* sample_create1(); void sample_destroy(sample*); int sample_get(sample*); void sample_set(sample*, int); #ifdef __cplusplus } #endif 

“样品-c.cpp”

 #include "sample.h" // Included first to find errors #include "sample.hpp" // complete the types and get the public interface sample* sample_create() {return new sample;} sample* sample_create0() {return new sampleClass;} sample* sample_create1() {return new sampleClass1;} void sample_destroy(sample* p) {delete p;} int sample_get(sample* p) {return p->get();} void sample_set(sample* p, int x) {p->set(x); 

“sample.hpp”

 // Your C++ header here, with class definition 

“sample.cpp的”

 #include "sample.hpp" // Included first to find errors // Implement the class here