Method arrayproto_slice

builtin_array.go:338–375

(call FunctionCall)

}

func (r *Runtime) arrayproto_slice(call FunctionCall) Value {
	o := call.This.ToObject(r)
	length := toLength(o.self.getStr("length", nil))
	start := relToIdx(call.Argument(0).ToInteger(), length)
	var end int64
	if endArg := call.Argument(1); endArg != _undefined {
		end = endArg.ToInteger()
	} else {
		end = length
	}
	end = relToIdx(end, length)

	count := end - start
	if count < 0 {
		count = 0
	}

	a := arraySpeciesCreate(o, count)
	if src := r.checkStdArrayObj(o); src != nil {
		if dst := r.checkStdArrayObjWithProto(a); dst != nil {
			values := make([]Value, count)
			copy(values, src.values[start:])
			setArrayValues(dst, values)
			return a
		}
	}

	n := int64(0)
	for start < end {
		p := o.self.getIdx(valueInt(start), nil)
		if p != nil {
			createDataPropertyOrThrow(a, valueInt(n), p)
		}
		start++
		n++
	}
	return a
}

func (r *Runtime) arrayproto_sort(call FunctionCall) Value {
	o := call.This.ToObject(r)