Function encodeReflect

libs/json/encoder.go:63–116

(w io.Writer, rv reflect.Value)

}

func encodeReflect(w io.Writer, rv reflect.Value) error {
	if !rv.IsValid() {
		return errors.New("invalid reflect value")
	}

	// Recursively dereference if pointer.
	for rv.Kind() == reflect.Ptr {
		if rv.IsNil() {
			return writeStr(w, "null")
		}
		rv = rv.Elem()
	}

	// Convert times to UTC.
	if rv.Type() == timeType {
		rv = reflect.ValueOf(rv.Interface().(time.Time).Round(0).UTC())
	}

	// If the value implements json.Marshaler, defer to stdlib directly. Since we've already
	// dereferenced, we try implementations with both value receiver and pointer receiver. We must
	// do this after the time normalization above, and thus after dereferencing.
	if rv.Type().Implements(jsonMarshalerType) {
		return encodeStdlib(w, rv.Interface())
	} else if rv.CanAddr() && rv.Addr().Type().Implements(jsonMarshalerType) {
		return encodeStdlib(w, rv.Addr().Interface())
	}

	switch rv.Type().Kind() {
	// Complex types must be recursively encoded.
	case reflect.Interface:
		return encodeReflectInterface(w, rv)

	case reflect.Array, reflect.Slice:
		return encodeReflectList(w, rv)

	case reflect.Map:
		return encodeReflectMap(w, rv)

	case reflect.Struct:
		return encodeReflectStruct(w, rv)

	// 64-bit integers are emitted as strings, to avoid precision problems with e.g.
	// Javascript which uses 64-bit floats (having 53-bit precision).
	case reflect.Int64, reflect.Int:
		return writeStr(w, `"`+strconv.FormatInt(rv.Int(), 10)+`"`)

	case reflect.Uint64, reflect.Uint:
		return writeStr(w, `"`+strconv.FormatUint(rv.Uint(), 10)+`"`)

	// For everything else, defer to the stdlib encoding/json encoder
	default:
		return encodeStdlib(w, rv.Interface())
	}
}

func encodeReflectList(w io.Writer, rv reflect.Value) error {
	// Emit nil slices as null.