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  1. #include <iostream>
  2. #include <typeinfo>
  3. #include <string>
  4. #include <map>
  5. using namespace std;
  6.  
  7. // Quick proof of concept (to be improved) 
  8. map<const type_info*, string> mytypes;  
  9.  
  10. template <class T>
  11. const string& mytype(T &&x) {
  12. 	return mytypes[&typeid(x)];
  13. }
  14.  
  15. // Some test types 
  16. struct A { virtual int test() {} };
  17. struct B : A {}; 
  18.  
  19. int main() {
  20.     // To be improved:  initialization of the type info extension 
  21. 	mytypes[&typeid(int)]="Plain C++ integer";
  22. 	mytypes[&typeid(A)]="Structure A";
  23. 	mytypes[&typeid(B)]="Structure B";
  24.  
  25.     // demo, including polymorphic type 	
  26. 	int a; 
  27. 	A * p = new B;
  28.     cout << typeid(int).name() <<endl; 
  29.     cout << mytype(a) <<endl; 
  30.     cout << mytype(*p) <<endl; 
  31. 	return 0;
  32. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
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i
Plain C++ integer
Structure B
https://ideone.com/2NiWiE
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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