package object

import "hash/fnv"

type Hashable interface {
	HashKey() HashKey
}

type HashKey struct {
	Type  ObjectType
	Value uint64
}

func (b *Boolean) HashKey() HashKey {
	var val uint64 = 0
	if b.Value {
		val = 1
	}
	return HashKey{Type: b.Type(), Value: val}
}

func (i *Integer) HashKey() HashKey {
	return HashKey{Type: i.Type(), Value: uint64(i.Value)}
}

func (s *String) HashKey() HashKey {
	h := fnv.New64()
	h.Write([]byte(s.Value))
	return HashKey{Type: s.Type(), Value: h.Sum64()}
}