nl_tokens: Eat comments and whitespace .
pl_tokens: function ( ) { var input = this . source ; for ( ; ; ) { var ch = input [ this . cursor ++ ] ; var next = input [ this . cursor ] ; if ( ch === '\n' && ! this . scanNewlines ) { this . lineno ++ ; } else if ( ch === '/' && next === '*' ) { this . cursor ++ ; for ( ; ; ) { ch = input [ this . cursor ++ ] ; if ( ch === undefined ) throw this . newSyntaxError ( "Unterminated comment" ) ; if ( ch === '*' ) { next = input [ this . cursor ] ; if ( next === '/' ) { this . cursor ++ ; <mask> ; } } else if ( ch === '\n' ) { this . lineno ++ ; } } } else if ( ch === '/' && next === '/' ) { this . cursor ++ ; for ( ; ; ) { ch = input [ this . cursor ++ ] ; if ( ch === undefined ) return ; if ( ch === '\n' ) { this . lineno ++ ; break ; } } } else if ( ch !== ' ' && ch !== '\t' ) { this . cursor -- ; return ; } } }