package core

// Links store

type LinkStore[K comparable, V any] struct {
	entries map[K]*V
	arena   Arena[V]
}

func (s *LinkStore[K, V]) Get(key K) *V {
	value := s.entries[key]
	if value != nil {
		return value
	}
	if s.entries == nil {
		s.entries = make(map[K]*V)
	}
	value = s.arena.New()
	s.entries[key] = value
	return value
}

func (s *LinkStore[K, V]) Has(key K) bool {
	_, ok := s.entries[key]
	return ok
}

func (s *LinkStore[K, V]) TryGet(key K) *V {
	return s.entries[key]
}