}
}

// lexField scans a field: .Alphanumeric.
// The . has been scanned.
func lexField(l *lexer) stateFn {
	return lexFieldOrVariable(l, itemField)
}

// lexVariable scans a Variable: $Alphanumeric.
// The $ has been scanned.
func lexVariable(l *lexer) stateFn {
	if l.atTerminator() { // Nothing interesting follows -> "$".
		return l.emit(itemVariable)
	}
	return lexFieldOrVariable(l, itemVariable)
}