Function ToStringMeta

auxiliary.go:223–241

ToStringMeta converts any Lua value at the given index to a Go string in a reasonable format. The resulting string is pushed onto the stack and also returned by the function. If the value has a metatable with a "__tostring" field, then ToStringMeta calls the corresponding metamethod with the value

(l *State, index int)

// calls the corresponding metamethod with the value as argument, and uses
// the result of the call as its result.
func ToStringMeta(l *State, index int) (string, bool) {
	if !CallMeta(l, index, "__tostring") {
		switch l.TypeOf(index) {
		case TypeNumber, TypeString:
			l.PushValue(index)
		case TypeBoolean:
			if l.ToBoolean(index) {
				l.PushString("true")
			} else {
				l.PushString("false")
			}
		case TypeNil:
			l.PushString("nil")
		default:
			l.PushFString("%s: %p", TypeNameOf(l, index), l.ToValue(index))
		}
	}
	return l.ToString(-1)
}

// NewMetaTable returns false if the registry already has the key name. Otherwise,
// creates a new table to be used as a metatable for userdata, adds it to the