Method encodeSlice

common/codec/jsonpb.go:91–111

Due to the lack of generics in go this function accepts callback which should return particular item by it index.

(
	len int,
	item func(i int) proto.Message,
)

// Due to the lack of generics in go
// this function accepts callback which should return particular item by it index.
func (e *JSONPBEncoder) encodeSlice(
	len int,
	item func(i int) proto.Message,
) ([]byte, error) {
	var buf bytes.Buffer
	buf.WriteString("[")
	for i := range len {
		pb := item(i)
		bs, err := e.marshaler.Marshal(pb)
		if err != nil {
			return nil, err
		}
		buf.Write(bs)

		if i < len-1 {
			buf.WriteString(",")
		}
	}
	buf.WriteString("]")
	return buf.Bytes(), nil
}

// constructor callback must create empty object, add it to result slice, and return it.
func (e *JSONPBEncoder) DecodeSlice(