package scope

import (
	"git.akyoto.dev/cli/q/src/build/cpu"
)

// Variable represents a named register.
type Variable struct {
	Name     string
	Alive    uint8
	Register cpu.Register
}

// IsAlive returns true if the variable is still alive.
func (v *Variable) IsAlive() bool {
	return v.Alive > 0
}

// Use reduces the lifetime counter by one.
func (v *Variable) Use() {
	if v.Alive == 0 {
		panic("incorrect number of variable use calls")
	}

	v.Alive--
}