Method unmarshal

opensca/sca/java/xml/read.go:320–633

Unmarshal a single XML element into val.

(val reflect.Value, start *StartElement, depth int)

// Unmarshal a single XML element into val.
func (d *Decoder) unmarshal(val reflect.Value, start *StartElement, depth int) error {
	if depth >= maxUnmarshalDepth || runtime.GOARCH == "wasm" && depth >= maxUnmarshalDepthWasm {
		return errUnmarshalDepth
	}
	// Find start element if we need it.
	if start == nil {
		for {
			tok, err := d.Token()
			if err != nil {
				return err
			}
			if t, ok := tok.(StartElement); ok {
				start = &t
				break
			}
		}
	}

	// Load value from interface, but only if the result will be
	// usefully addressable.
	if val.Kind() == reflect.Interface && !val.IsNil() {
		e := val.Elem()
		if e.Kind() == reflect.Pointer && !e.IsNil() {
			val = e
		}
	}

	if val.Kind() == reflect.Pointer {
		if val.IsNil() {
			val.Set(reflect.New(val.Type().Elem()))
		}
		val = val.Elem()
	}

	if val.CanInterface() && val.Type().Implements(unmarshalerType) {
		// This is an unmarshaler with a non-pointer receiver,
		// so it's likely to be incorrect, but we do what we're told.
		return d.unmarshalInterface(val.Interface().(Unmarshaler), start)
	}

	if val.CanAddr() {
		pv := val.Addr()
		if pv.CanInterface() && pv.Type().Implements(unmarshalerType) {
			return d.unmarshalInterface(pv.Interface().(Unmarshaler), start)
		}
	}

	if val.CanInterface() && val.Type().Implements(textUnmarshalerType) {
		return d.unmarshalTextInterface(val.Interface().(encoding.TextUnmarshaler))
	}

	if val.CanAddr() {
		pv := val.Addr()
		if pv.CanInterface() && pv.Type().Implements(textUnmarshalerType) {
			return d.unmarshalTextInterface(pv.Interface().(encoding.TextUnmarshaler))
		}
	}