# Token names.
lex start
{
	token number /[0-9]+/
	token id /[a-z]+/
	token string /'"' [^"]* '"'/
	ignore ws / [ \t\n]+ /
}

def prefix [id]

def choice1
	[number number]
|	[number]

def choice2 
	[string id]
|	[number number]
|	[id number]
|	[number]

token EOL /'\n'/

def start 
	[prefix choice1 choice2 string id id EOL]
	{
		print_xml( match lhs "id 77 88 \"hello\" dude dude\n" )
	}

parse start(stdin)