Function EncodeJSON

postgres/parser/json/encode.go:175–200

EncodeJSON encodes a JSON value as a sequence of bytes.

(appendTo []byte, j JSON)

// EncodeJSON encodes a JSON value as a sequence of bytes.
func EncodeJSON(appendTo []byte, j JSON) ([]byte, error) {
	switch j.Type() {
	case ArrayJSONType, ObjectJSONType:
		// We just discard the JEntry in these cases.
		var err error
		_, appendTo, err = j.encode(appendTo)
		if err != nil {
			return appendTo, err
		}
		return appendTo, nil
	default: // j is a scalar, so we must construct a scalar container for it at the top level.
		// Scalar container header.
		appendTo = encoding.EncodeUint32Ascending(appendTo, scalarContainerTag)
		// Reserve space for scalar jEntry.
		jEntryIdx := len(appendTo)
		appendTo = encoding.EncodeUint32Ascending(appendTo, 0)
		var entry jEntry
		var err error
		entry, appendTo, err = j.encode(appendTo)
		if err != nil {
			return appendTo, err
		}
		appendTo = encoding.PutUint32Ascending(appendTo, entry.encoded(lengthMode), jEntryIdx)
		return appendTo, nil
	}
}

// DecodeJSON decodes a value encoded with EncodeJSON.
func DecodeJSON(b []byte) ([]byte, JSON, error) {