question: public void checkActions ( LexScan scanner , LexParse parser ) { EOFActions eofActions = parser . getEOFActions ( ) ; for ( Action a : scanner . actions ) if ( ! a . equals ( usedActions . get ( a ) ) && ! eofActions . isEOFAction ( a ) ) Out . warning ( scanner . file , ErrorMessages . NEVER_MATCH , a . priority - 1 , - 1 ) ; }
target:  Check that all actions can actually be matched in this DFA.