package registry

// A Repr is a lambda calculus expression. It can have any type of
// representation, so long as that class is known to the registry it is handled
// by.
type Repr interface {
	// ID returns the name of the underlying representation. It is assumed that
	// if two expressions have the same Id(), they have the same representation.
	ID() string

	// The base expression data.
	Data() any
}

type baseRepr struct {
	id   string
	data any
}

func (r baseRepr) ID() string { return r.id }

func (r baseRepr) Data() any { return r.data }

func NewRepr(id string, data any) Repr { return baseRepr{id, data} }