Method encode

postgres/parser/json/encode.go:130–172

(appendTo []byte)

}

func (j jsonObject) encode(appendTo []byte) (e jEntry, b []byte, err error) {
	encodingStartPosition := len(appendTo)
	// Object container header.
	appendTo = encoding.EncodeUint32Ascending(appendTo, objectContainerTag|uint32(len(j)))
	// Reserve space for the key and value JEntries and store where they start so
	// we can fill them in later.
	jEntryIdx := len(appendTo)
	for i := 0; i < len(j)*2; i++ {
		appendTo = append(appendTo, 0, 0, 0, 0)
	}
	offset := uint32(0)
	// Encode all keys.
	for i := 0; i < len(j); i++ {
		var nextJEntry jEntry
		nextJEntry, appendTo, err = j[i].k.encode(appendTo)
		if err != nil {
			return jEntry{}, appendTo, err
		}

		length := nextJEntry.length
		offset += length

		appendTo = encoding.PutUint32Ascending(appendTo, nextJEntry.encoded(encodingModeForIdx(i, offset)), jEntryIdx+i*4)
	}
	// Encode all values.
	for i := 0; i < len(j); i++ {
		var nextJEntry jEntry
		nextJEntry, appendTo, err = j[i].v.encode(appendTo)
		if err != nil {
			return jEntry{}, appendTo, err
		}

		length := nextJEntry.length
		offset += length

		appendTo = encoding.PutUint32Ascending(appendTo, nextJEntry.encoded(encodingModeForIdx(i, offset)), jEntryIdx+(len(j)+i)*4)
	}
	lengthInBytes := len(appendTo) - encodingStartPosition
	if err := checkLength(lengthInBytes); err != nil {
		return jEntry{}, b, err
	}
	return makeContainerJEntry(lengthInBytes), appendTo, nil
}

// EncodeJSON encodes a JSON value as a sequence of bytes.
func EncodeJSON(appendTo []byte, j JSON) ([]byte, error) {