ref.go

package gates

import (
	"math"
)

type Ref struct {
	v interface{}
}

func (Ref) IsString() bool { return false }
func (Ref) IsInt() bool    { return false }
func (Ref) IsFloat() bool  { return false }
func (Ref) IsBool() bool   { return false }

func (r Ref) IsFunction() bool {
	_, ok := r.v.(Function)
	return ok
}

func (Ref) ToString() string     { return "[object Ref]" }
func (Ref) ToInt() int64         { return 0 }
func (Ref) ToFloat() float64     { return math.NaN() }
func (ref Ref) ToNumber() Number { return Float(ref.ToFloat()) }
func (Ref) ToBool() bool         { return true }

func (r Ref) ToFunction() Function {
	f, ok := r.v.(Function)
	if !ok {
		return _EmptyFunction
	}
	return f
}

func (r Ref) ToNative(...ToNativeOption) interface{} { return r.v }

func (ref Ref) Equals(other Value) bool {
	if o, ok := other.(Ref); ok {
		return ref.v == o.v
	}
	return false
}

func (ref Ref) SameAs(other Value) bool { return ref.Equals(other) }

func ref(v interface{}) Ref {
	if r, ok := v.(Ref); ok {
		return r
	}
	return Ref{v}
}

func unref(v interface{}) interface{} { return ref(v).v }

func NewRef(v interface{}) Ref { return ref(v) }