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// RTTI support for -*- C++ -*-
// Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000 Free Software Foundation
// __GXX_ABI_VERSION distinguishes the ABI that is being used. Values <100
// indicate the `old' abi, which grew as C++ was defined. Values >=100
// indicate the `new' abi, which is a cross vendor C++ abi, documented at
// `http://reality.sgi.com/dehnert_engr/cxx/'.
#ifndef __TYPEINFO__
#define __TYPEINFO__
#pragma interface "typeinfo"
#include <exception>
extern "C++" {
#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100
namespace __cxxabiv1
{
class __class_type_info;
} // namespace __cxxabiv1
#endif
namespace std {
class type_info {
public:
// Destructor. Being the first non-inline virtual function, this controls in
// which translation unit the vtable is emitted. The compiler makes use of
// that information to know where to emit the runtime-mandated type_info
// structures in the new-abi.
virtual ~type_info ();
private:
// Assigning type_info is not supported. made private.
type_info& operator= (const type_info&);
type_info (const type_info&);
protected:
const char *__name;
protected:
explicit type_info (const char *__n): __name (__n) { }
public:
// the public interface
#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
// In old abi, there can be multiple instances of a type_info object for one
// type. Uniqueness must use the _name value, not object address.
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
{ return !operator== (__arg); }
#else
// In new abi we can rely on type_info's NTBS being unique,
// and therefore address comparisons are sufficient.
bool before (const type_info& __arg) const
{ return __name < __arg.__name; }
const char* name () const
{ return __name; }
bool operator== (const type_info& __arg) const
{ return __name == __arg.__name; }
bool operator!= (const type_info& __arg) const
{ return !operator== (__arg); }
#endif
// the internal interface
#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100
public:
// return true if this is a pointer type of some kind
virtual bool __is_pointer_p () const;
// return true if this is a function type
virtual bool __is_function_p () const;
// Try and catch a thrown type. Store an adjusted pointer to the caught type
// in THR_OBJ. If THR_TYPE is not a pointer type, then THR_OBJ points to the
// thrown object. If THR_TYPE is a pointer type, then THR_OBJ is the pointer
// itself. OUTER indicates the number of outer pointers, and whether they
// were const qualified.
virtual bool __do_catch (const type_info *__thr_type, void **__thr_obj,
unsigned __outer) const;
// internally used during catch matching
virtual bool __do_upcast (const __cxxabiv1::__class_type_info *__target,
void **__obj_ptr) const;
#endif
};
class bad_cast : public exception {
public:
bad_cast() { }
virtual ~bad_cast() { }
};
class bad_typeid : public exception {
public:
bad_typeid () { }
virtual ~bad_typeid () { }
};
} // namespace std
} // extern "C++"
#endif
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