package unstable

// Unmarshaler is implemented by types that can unmarshal a TOML
// description of themselves. The input is a valid TOML document
// containing the relevant portion of the parsed document.
//
// For tables (including split tables defined in multiple places),
// the data contains the raw key-value bytes from the original document
// with adjusted table headers to be relative to the unmarshaling target.
type Unmarshaler interface {
	UnmarshalTOML(data []byte) error
}

// RawMessage is a raw encoded TOML value. It implements Unmarshaler
// and can be used to delay TOML decoding or capture raw content.
//
// Example usage:
//
//	type Config struct {
//	    Plugin RawMessage `toml:"plugin"`
//	}
//
//	var cfg Config
//	toml.NewDecoder(r).EnableUnmarshalerInterface().Decode(&cfg)
//	// cfg.Plugin now contains the raw TOML bytes for [plugin]
type RawMessage []byte

// UnmarshalTOML implements Unmarshaler.
func (m *RawMessage) UnmarshalTOML(data []byte) error {
	*m = append((*m)[0:0], data...)
	return nil
}