grammar Bam {
	rule TOP { <statement> * }
	rule statement { <expression> } #|<function-declaration>
	rule expression { <number> | <string> | <function-call> }
	token number { \d* }
	token string { '"' .* '"' }
	rule function-call { \w* "(" <comma-separated-expr-list> ")" }
	rule comma-separated-expr-list {
		[<expression> ","]*
		<expression>
		","?
	}

}

say Bam.parsefile(@*ARGS[0]);