package value

import "jinx/pkg/lang/vm/mem"

type Env struct {
	references []reference
}

func NewEnv() Env {
	return Env{
		references: make([]reference, 0),
	}
}

func (e *Env) Add(stackIndex int, outlet mem.Ptr) {
	e.references = append(e.references, reference{
		stackIndex: stackIndex,
		outlet:     outlet,
	})
}

func (e *Env) GetOutlet(envIndex int) mem.Ptr {
	return e.references[envIndex].outlet
}

func (e *Env) GetStackIndex(envIndex int) int {
	return e.references[envIndex].stackIndex
}

func (e *Env) Len() int {
	return len(e.references)
}

type reference struct {
	stackIndex int
	outlet     mem.Ptr
}