Castable-impl.hpp

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#ifndef DART_COMMON_DETAIL_CASTABLE_HPP_
#define DART_COMMON_DETAIL_CASTABLE_HPP_
 
#include "dart/common/Castable.hpp"
#include "dart/common/Metaprogramming.hpp"
 
namespace dart::common {
 
//==============================================================================
DART_CREATE_MEMBER_CHECK(getType);
DART_CREATE_MEMBER_CHECK(getStaticType);
 
//==============================================================================
template <typename Base>
template <typename Derived>
bool Castable<Base>::is() const
{
  if constexpr (
      has_member_getType<Base>::value
      && has_member_getStaticType<Derived>::value)
  {
    return (base().getType() == Derived::getStaticType());
  }
  else
  {
    return (dynamic_cast<const Derived*>(&base()) != nullptr);
  }
}
 
//==============================================================================
template <typename Base>
template <typename Derived>
const Derived* Castable<Base>::as() const
{
  return is<Derived>() ? static_cast<const Derived*>(&base()) : nullptr;
}
 
//==============================================================================
template <typename Base>
template <typename Derived>
Derived* Castable<Base>::as()
{
  return is<Derived>() ? static_cast<Derived*>(&base()) : nullptr;
}
 
//==============================================================================
template <typename Base>
template <typename Derived>
const Derived& Castable<Base>::asRef() const
{
  assert(is<Derived>());
  return *as<Derived>();
}
 
//==============================================================================
template <typename Base>
template <typename Derived>
Derived& Castable<Base>::asRef()
{
  assert(is<Derived>());
  return *as<Derived>();
}
 
//==============================================================================
template <typename Base>
const Base& Castable<Base>::base() const
{
  return *static_cast<const Base*>(this);
}
 
//==============================================================================
template <typename Base>
Base& Castable<Base>::base()
{
  return *static_cast<Base*>(this);
}
 
} // namespace dart::common
 
#endif // DART_COMMON_DETAIL_CASTABLE_HPP_