nl_tokens: Reads the namespace type declaration ebnf use_type :: = ( T_FUNCTION | T_CONST ) ?
pl_tokens: function ( ) { if ( this . token === this . tok . T_FUNCTION ) { this . <mask> ( ) ; return this . ast . useitem . TYPE_FUNCTION ; } else if ( this . token === this . tok . T_CONST ) { this . next ( ) ; return this . ast . useitem . TYPE_CONST ; } return null ; }