typeinfo

来自「GCC编译器源代码」· 代码 · 共 72 行

// RTTI support for -*- C++ -*-
// Copyright (C) 1994, 1995, 1996 Free Software Foundation

#ifndef __TYPEINFO__
#define __TYPEINFO__

#include <exception>

extern "C++" {

#if 0
namespace std {
#endif

class type_info {
private:
  // assigning type_info is not supported.  made private.
  type_info& operator= (const type_info&);
  type_info (const type_info&);

protected:
  type_info (const char *n): _name (n) { }

  const char *_name;

public:
  // destructor
  virtual ~type_info ();
    
  bool before (const type_info& arg) const;
  const char* name () const
    { return _name; }
  bool operator== (const type_info& arg) const;
  bool operator!= (const type_info& arg) const;
};

// We can't rely on common symbols being shared between translation units
// under Windows.  Sigh.

#ifndef _WIN32
inline bool type_info::
operator== (const type_info& arg) const
{
  return &arg == this;
}

inline bool type_info::
operator!= (const type_info& arg) const
{
  return &arg != this;
}
#endif

class bad_cast : public exception {
public:
  bad_cast() { }
  virtual ~bad_cast() { }
};

class bad_typeid : public exception {
 public:
  bad_typeid () { }
  virtual ~bad_typeid () { }
};

#if 0
} // namespace std
#endif

} // extern "C++"
#endif