Function builtinMaxArray

builtins.go:2380–2428

(i *interpreter, arguments []value)

}

func builtinMaxArray(i *interpreter, arguments []value) (value, error) {
	arrv := arguments[0]
	keyFv := arguments[1]
	onEmpty := arguments[2]

	arr, err := i.getArray(arrv)
	if err != nil {
		return nil, err
	}
	keyF, err := i.getFunction(keyFv)
	if err != nil {
		return nil, err
	}
	num := arr.length()
	if num == 0 {
		if onEmpty == nil {
			return nil, i.Error("Expected at least one element in array. Got none")
		} else {
			return onEmpty, nil
		}
	}
	maxVal, err := arr.elements[0].getValue(i)
	if err != nil {
		return nil, err
	}
	maxValKey, err := keyF.call(i, args(arr.elements[0]))
	if err != nil {
		return nil, err
	}
	for index := 1; index < num; index++ {
		current, err := arr.elements[index].getValue(i)
		if err != nil {
			return nil, err
		}
		currentKey, err := keyF.call(i, args(arr.elements[index]))
		if err != nil {
			return nil, err
		}
		cmp, err := valueCmp(i, maxValKey, currentKey)
		if err != nil {
			return nil, err
		}
		if cmp < 0 {
			maxVal = current
			maxValKey = currentKey
		}
	}
	return maxVal, nil
}

func builtinNative(i *interpreter, name value) (value, error) {
	str, err := i.getString(name)