#include <stdio.h>
#include "jsmagic.h"

class ProxyClass{
public:
  /* ProxyClass leads the execution to code implemented in JavaScript */

  ProxyClass(int ID) : ID(ID) {};

  virtual int Stub0(int arg1, int arg2, int arg3, int arg4){
    return magicallyExecuteJSFunction(ID, 0, arg1, arg2, arg3, arg4);
  }

  virtual int Stub1(int arg1, int arg2, int arg3, int arg4){
    return magicallyExecuteJSFunction(ID, 1, arg1, arg2, arg3, arg4);
  }

  int ID;
};

void CreateInstance(int ID, void **result){
  ProxyClass* pc = new ProxyClass(ID);
  *result = reinterpret_cast<void*>(pc);
}

class JSComponentMath{
public:
  /* not implemented */
  virtual int add(int op1, int op2){ return 0; };
  virtual int mul(int op1, int op2){ return 0; };
};

class JSComponentImage{
public:
  /* not implemented */
  virtual int drawLine(int startX, int startY, int endX, int endY){ return 0; };
  virtual int drawCircle(int x, int y, int radius){ return 0; };
};

int main(){
  JSComponentMath *jscMath;
  CreateInstance(JSC_ID_MATH, reinterpret_cast<void**>(&jscMath));
  // At runtime, jscMath is of type ProxyClass, which means that the vtable of 
  // ProxyClass is used at the virtual callsites below.
  jscMath->add(5, 10);
  jscMath->mul(3, 7);

  JSComponentImage *jscImage;
  CreateInstance(JSC_ID_IMAGE, reinterpret_cast<void**>(&jscImage));
  // At runtime, jscImage is of type ProxyClass, which means that the vtable of 
  // ProxyClass is used at the virtual callsites below.
  jscImage->drawLine(0, 0, 200, 200);
  jscImage->drawCircle(100, 100, 50);
  
  return 0;
}