poolmember.h

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#ifndef POOLMEMBER_H_ZYPPNG_WRAPPER_H
#define POOLMEMBER_H_ZYPPNG_WRAPPER_H

namespace zyppng::sat {

  class Pool;

  namespace detail {
    // Primary templates — intentionally left undefined.
    // Each type that inherits PoolMember<T> must provide an explicit
    // specialization (declared in its .h, defined in its .cc).
    // A missing specialization produces a linker error, not a silent
    // fallback to the global singleton.
    template <typename T> Pool &       poolFromType( T & );
    template <typename T> const Pool & poolFromType( const T & );
  }

  template <typename Derived>
  class PoolMember
  {
  public:
    Pool & pool()
    { return detail::poolFromType( static_cast<Derived &>( *this ) ); }

    const Pool & pool() const
    { return detail::poolFromType( static_cast<const Derived &>( *this ) ); }
  };

} // namespace zyppng::sat
#endif // POOLMEMBER_H_ZYPPNG_WRAPPER_H