content: 
  package java_cup;
  
  import java.util.Enumeration; 
  import java.io.*;
  import java_cup.runtime.*;
  
  /** This class serves as the main driver for the JavaCup system.
   *  It accepts user options and coordinates overall control flow.
   *  The main flow of control includes the following activities: 
   *  <ul>
   *    <li> Parse user supplied arguments and options.
   *    <li> Open output files.
   *    <li> Parse the specification from standard input.
   *    <li> Check for unused terminals, non-terminals, and productions.
   *    <li> Build the state machine, tables, etc.
   *    <li> Output the generated code.
   *    <li> Close output files.
   *    <li> Print a summary if requested.
   *  </ul>
   *
   *  Options to the main program include: <dl>
   *   <dt> -package name  
   *   <dd> specify package generated classes go in [default none]
   *   <dt> -parser name   
   *   <dd> specify parser class name [default "parser"]
   *   <dt> -symbols name  
   *   <dd> specify name for symbol constant class [default "sym"]
   *   <dt> -interface
   *   <dd> emit symbol constant <i>interface</i>, rather than class
   *   <dt> -nonterms      
   *   <dd> put non terminals in symbol constant class
   *   <dt> -expect #      
   *   <dd> number of conflicts expected/allowed [default 0]
   *   <dt> -compact_red   
   *   <dd> compact tables by defaulting to most frequent reduce
   *   <dt> -nowarn        
   *   <dd> don't warn about useless productions, etc.
   *   <dt> -nosummary     
   *   <dd> don't print the usual summary of parse states, etc.
   *   <dt> -progress      
   *   <dd> print messages to indicate progress of the system
   *   <dt> -time          
   *   <dd> print time usage summary
   *   <dt> -dump_grammar  
   *   <dd> produce a dump of the symbols and grammar
   *   <dt> -dump_states   
   *   <dd> produce a dump of parse state machine
   *   <dt> -dump_tables   
   *   <dd> produce a dump of the parse tables
   *   <dt> -dump          
   *   <dd> produce a dump of all of the above
   *   <dt> -debug         
   *   <dd> turn on debugging messages within JavaCup 
   *   <dt> -nopositions
   *   <dd> don't generate the positions code
   *   <dt> -locations
   *   <dd> generate handles xleft/xright for symbol positions in actions
   *   <dt> -noscanner
   *   <dd> don't refer to java_cup.runtime.Scanner in the parser
   *        (for compatibility with old runtimes)
   *   <dt> -version
   *   <dd> print version information for JavaCUP and halt.
   *   </dl>
   *
   * @version last updated: 7/3/96
   * @author  Frank Flannery
   */
  
  public class Main {
  
    /*-----------------------------------------------------------*/
    /*--- Constructor(s) ----------------------------------------*/
    /*-----------------------------------------------------------*/
    /** Only constructor is private, so we do not allocate any instances of this
        class. */
    private Main() { }
  
    /*-------------------------*/
    /* Options set by the user */
    /*-------------------------*/
    /** User option -- do we print progress messages. */
    protected static boolean print_progress   = false;
    /** User option -- do we produce a dump of the state machine */
    protected static boolean opt_dump_states  = false;
    /** User option -- do we produce a dump of the parse tables */
    protected static boolean opt_dump_tables  = false;
    /** User option -- do we produce a dump of the grammar */
    protected static boolean opt_dump_grammar = false;
    /** User option -- do we show timing information as a part of the summary */
    protected static boolean opt_show_timing  = false;
    /** User option -- do we run produce extra debugging messages */
    protected static boolean opt_do_debug     = false;
    /** User option -- do eclipse debug symbols */
    protected static boolean opt_do_debugsymbols = false; 
    /** User option -- do we compact tables by making most common reduce the 
        default action */
    protected static boolean opt_compact_red  = false;
    /** User option -- should we include non terminal symbol numbers in the 
        symbol constant class. */
    protected static boolean include_non_terms = false;
    /** User option -- do not print a summary. */
    protected static boolean no_summary = false;
    /** User option -- number of conflicts to expect */
    protected static int expect_conflicts = 0;
  
    /* frankf added this 6/18/96 */
    /** User option -- should generator generate code for left/right values? */
    protected static boolean lr_values = true;
    protected static boolean locations = false;
    protected static boolean xmlactions = false;
    protected static boolean genericlabels = false;
    
    /** User option -- should symbols be put in a class or an interface? [CSA]*/
    protected static boolean sym_interface = false;
  
    /** User option -- should generator suppress references to
     *  java_cup.runtime.Scanner for compatibility with old runtimes? */
    protected static boolean suppress_scanner = false;
  
    /*----------------------------------------------------------------------*/
    /* Timing data (not all of these time intervals are mutually exclusive) */
    /*----------------------------------------------------------------------*/
    /** Timing data -- when did we start */
    protected static long start_time       = 0;
    /** Timing data -- when did we end preliminaries */
    protected static long prelim_end       = 0;
    /** Timing data -- when did we end parsing */
    protected static long parse_end        = 0;
    /** Timing data -- when did we end checking */
    protected static long check_end        = 0;
    /** Timing data -- when did we end dumping */
    protected static long dump_end         = 0;
    /** Timing data -- when did we end state and table building */
    protected static long build_end        = 0;
    /** Timing data -- when did we end nullability calculation */
    protected static long nullability_end  = 0;
    /** Timing data -- when did we end first set calculation */
    protected static long first_end        = 0;
    /** Timing data -- when did we end state machine construction */
    protected static long machine_end      = 0;
    /** Timing data -- when did we end table construction */
    protected static long table_end        = 0;
    /** Timing data -- when did we end checking for non-reduced productions */
    protected static long reduce_check_end = 0;
    /** Timing data -- when did we finish emitting code */
    protected static long emit_end         = 0;
    /** Timing data -- when were we completely done */
    protected static long final_time       = 0;
  
    /* Additional timing information is also collected in emit */
  
    /*-----------------------------------------------------------*/
    /*--- Main Program ------------------------------------------*/
    /*-----------------------------------------------------------*/
  
    /** The main driver for the system. 
     * @param argv an array of strings containing command line arguments.
     */
    public static void main(String argv[]) 
      throws internal_error, java.io.IOException, java.lang.Exception
      {
        boolean did_output = false;
  
        start_time = System.currentTimeMillis();
        
        /** clean all static members, that contain remaining stuff from earlier calls */
        terminal.clear();
        production.clear();
        action_production.clear();
        emit.clear();
        non_terminal.clear();
        parse_reduce_row.clear();
        parse_action_row.clear();
        lalr_state.clear();
  
        /* process user options and arguments */
        parse_args(argv);
  
        /* frankf 6/18/96
  	 hackish, yes, but works */
        emit.set_lr_values(lr_values);
        emit.set_locations(locations);
        emit.set_xmlactions(xmlactions);
        emit.set_genericlabels(genericlabels);
        /* open output set_xmlactionsfiles */
        if (print_progress) System.err.println("Opening files...");
        /* use a buffered version of standard input */
        input_file = new BufferedInputStream(System.in);
  
        prelim_end = System.currentTimeMillis();
  
        /* parse spec into internal data structures */
        if (print_progress) 
  	System.err.println("Parsing specification from standard input...");
        parse_grammar_spec();
  
        parse_end = System.currentTimeMillis();
  
        /* don't proceed unless we are error free */
        if (ErrorManager.getManager().getErrorCount() == 0)
  	{
  	  /* check for unused bits */
            if (print_progress) System.err.println("Checking specification...");
            check_unused();
  
            check_end = System.currentTimeMillis();
  
  	  /* build the state machine and parse tables */
            if (print_progress) System.err.println("Building parse tables...");
            build_parser();
  
            build_end = System.currentTimeMillis();
  
  	  /* output the generated code, if # of conflicts permits */
  	  if (ErrorManager.getManager().getErrorCount() != 0) {
  	      // conflicts! don't emit code, don't dump tables.
  	      opt_dump_tables = false;
  	  } else { // everything's okay, emit parser.
  	      if (print_progress) System.err.println("Writing parser...");
  	      open_files();
  	      emit_parser();
  	      did_output = true;
  	  }
  	}
        /* fix up the times to make the summary easier */
        emit_end = System.currentTimeMillis();
  
        /* do requested dumps */
        if (opt_dump_grammar) dump_grammar();
        if (opt_dump_states)  dump_machine(); 
        if (opt_dump_tables)  dump_tables(); 
  
        dump_end = System.currentTimeMillis();
  
        /* close input/output files */
        if (print_progress) System.err.println("Closing files...");
        close_files();
  
        /* produce a summary if desired */
        if (!no_summary) emit_summary(did_output);
  
        /* If there were errors during the run,
         * exit with non-zero status (makefile-friendliness). --CSA */
        if (ErrorManager.getManager().getErrorCount() != 0)
  	  System.exit(100);
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Print a "usage message" that described possible command line options, 
     *  then exit.
     * @param message a specific error message to preface the usage message by.
     */
    protected static void usage(String message)
      {
        System.err.println();
        System.err.println(message);
        System.err.println();
        System.err.println(
  version.title_str + "\n" +
  "Usage: " + version.program_name + " [options] [filename]\n" +
  "  and expects a specification file on standard input if no filename is given.\n" +
  "  Legal options include:\n" +
  "    -package name  specify package generated classes go in [default none]\n" +
  "    -destdir name  specify the destination directory, to store the generated files in\n" +
  "    -parser name   specify parser class name [default \"parser\"]\n" +
  "    -typearg args  specify type arguments for parser class\n" + 
  "    -symbols name  specify name for symbol constant class [default \"sym\"]\n"+
  "    -interface     put symbols in an interface, rather than a class\n" +
  "    -nonterms      put non terminals in symbol constant class\n" + 
  "    -expect #      number of conflicts expected/allowed [default 0]\n" + 
  "    -compact_red   compact tables by defaulting to most frequent reduce\n" +
  "    -nowarn        don't warn about useless productions, etc.\n" +
  "    -nosummary     don't print the usual summary of parse states, etc.\n" +
  "    -nopositions   don't propagate the left and right token position values\n" +
  "    -locations     generate handles xleft/xright for symbol positions in actions\n" +
  "    -xmlactions    make the generated parser yield its parse tree as XML\n" +
  "    -genericlabels automatically generate labels to all symbols in XML mode\n" +
  "    -noscanner     don't refer to java_cup.runtime.Scanner\n" +
  "    -progress      print messages to indicate progress of the system\n" +
  "    -time          print time usage summary\n" +
  "    -dump_grammar  produce a human readable dump of the symbols and grammar\n"+
  "    -dump_states   produce a dump of parse state machine\n"+
  "    -dump_tables   produce a dump of the parse tables\n"+
  "    -dump          produce a dump of all of the above\n"+
  "    -version       print the version information for CUP and exit\n"
        );
        System.exit(1);
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Parse command line options and arguments to set various user-option
     *  flags and variables. 
     * @param argv the command line arguments to be parsed.
     */
    protected static void parse_args(String argv[])
      {
        int len = argv.length;
        int i;
  
        /* parse the options */
        for (i=0; i<len; i++)
  	{
  	  /* try to get the various options */
  	  if (argv[i].equals("-package"))
  	    {
  	      /* must have an arg */
  	      if (++i >= len || argv[i].startsWith("-") || 
  				argv[i].endsWith(".cup")) 
  		usage("-package must have a name argument");
  
  	      /* record the name */
  	      emit.package_name = argv[i];
  	    }
  	  else if (argv[i].equals("-destdir"))
  	    {
  	      /* must have an arg */
  	      if (++i >= len || argv[i].startsWith("-") || 
  				argv[i].endsWith(".cup")) 
  		usage("-destdir must have a name argument");
  	      /* record the name */
  	      Main.dest_dir = new java.io.File(argv[i]);
  	    }
  	  else if (argv[i].equals("-parser"))
  	    {
  	      /* must have an arg */
  	      if (++i >= len || argv[i].startsWith("-") || 
  				argv[i].endsWith(".cup")) 
  		usage("-parser must have a name argument");
  
  	      /* record the name */
  	      emit.parser_class_name = argv[i];
  	    }
  	  else if (argv[i].equals("-symbols"))
  	    {
  	      /* must have an arg */
  	      if (++i >= len || argv[i].startsWith("-") || 
  				argv[i].endsWith(".cup")) 
  		usage("-symbols must have a name argument");
  
  	      /* record the name */
  	      emit.symbol_const_class_name = argv[i];
  	    }
  	  else if (argv[i].equals("-nonterms"))
  	    {
  	      include_non_terms = true;
  	    }
  	  else if (argv[i].equals("-expect"))
  	    {
  	      /* must have an arg */
  	      if (++i >= len || argv[i].startsWith("-") || 
  				argv[i].endsWith(".cup")) 
  		usage("-expect must have a name argument");
  
  	      /* record the number */
  	      try {
  	        expect_conflicts = Integer.parseInt(argv[i]);
  	      } catch (NumberFormatException e) {
  		usage("-expect must be followed by a decimal integer");
  	      }
  	    }
  	  else if (argv[i].equals("-compact_red"))  opt_compact_red = true;
  	  else if (argv[i].equals("-nosummary"))    no_summary = true;
  	  else if (argv[i].equals("-nowarn"))       emit.nowarn = true;
  	  else if (argv[i].equals("-dump_states"))  opt_dump_states = true;
  	  else if (argv[i].equals("-dump_tables"))  opt_dump_tables = true; 
  	  else if (argv[i].equals("-progress"))     print_progress = true;
  	  else if (argv[i].equals("-dump_grammar")) opt_dump_grammar = true;
  	  else if (argv[i].equals("-dump")) 
  	        opt_dump_states = opt_dump_tables = opt_dump_grammar = true; 
  	  else if (argv[i].equals("-time"))         opt_show_timing = true; 
  	  else if (argv[i].equals("-debug"))        opt_do_debug = true;
  	  else if (argv[i].equals("-debugsymbols"))        opt_do_debugsymbols = true;
  	  /* frankf 6/18/96 */
  	  else if (argv[i].equals("-nopositions"))  lr_values = false;
  	  else if (argv[i].equals("-locations"))    locations = true;
  	  else if (argv[i].equals("-xmlactions"))   xmlactions = true;
  	  else if (argv[i].equals("-genericlabels"))   genericlabels = true;
  	  /* CSA 12/21/97 */
  	  else if (argv[i].equals("-interface"))    sym_interface = true;
  	  /* CSA 23-Jul-1999 */
  	  else if (argv[i].equals("-noscanner"))    suppress_scanner = true;
  	  /* CSA 23-Jul-1999 */
  	  else if (argv[i].equals("-version")) {
  	      System.out.println(version.title_str);
  	      System.exit(1);
  	  }
        /* TUM changes; suggested by Henning Niss 20050628*/
   	  else if (argv[i].equals("-typearg")){
   	      if (++i >= len || argv[i].startsWith("-") || 
                argv[i].endsWith(".cup")) 
                usage("-symbols must have a name argument");
            
   	      /* record the typearg */
   	      emit.class_type_argument = argv[i];
        }
  
  	  /* CSA 24-Jul-1999; suggestion by Jean Vaucher */
  	  else if (!argv[i].startsWith("-") && i==len-1) {
  	      /* use input from file. */
  	      try {
  		  System.setIn(new FileInputStream(argv[i]));
  	      } catch (java.io.FileNotFoundException e) {
  		  usage("Unable to open \"" + argv[i] +"\" for input");
  	      }
  	  }
  	  else
  	    {
  	      usage("Unrecognized option \"" + argv[i] + "\"");
  	    }
  	}
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /*-------*/
    /* Files */
    /*-------*/
  
    /** Input file.  This is a buffered version of System.in. */
    protected static BufferedInputStream input_file;
  
    /** Output file for the parser class. */
    protected static PrintWriter parser_class_file;
  
    /** Output file for the symbol constant class. */
    protected static PrintWriter symbol_class_file;
  
    /** Output directory. */
    protected static File dest_dir = null;
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Open various files used by the system. */
    protected static void open_files()
      {
        File fil;
        String out_name;
  
        /* open each of the output files */
  
        /* parser class */
        out_name = emit.parser_class_name + ".java";
        fil = new File(dest_dir,out_name);
        try {
          parser_class_file = new PrintWriter(
  		 new BufferedOutputStream(new FileOutputStream(fil), 4096));
        } catch(Exception e) {
  	System.err.println("Can't open \"" + out_name + "\" for output");
  	System.exit(3);
        }
  
        /* symbol constants class */
        out_name = emit.symbol_const_class_name + ".java";
        fil = new File(dest_dir,out_name);
        try {
          symbol_class_file = new PrintWriter(
  		 new BufferedOutputStream(new FileOutputStream(fil), 4096));
        } catch(Exception e) {
  	System.err.println("Can't open \"" + out_name + "\" for output");
  	System.exit(4);
        }
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Close various files used by the system. */
    protected static void close_files() throws java.io.IOException
      {
        if (input_file != null) input_file.close();
        if (parser_class_file != null) parser_class_file.close();
        if (symbol_class_file != null) symbol_class_file.close();
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Parse the grammar specification from standard input.  This produces
     *  sets of terminal, non-terminals, and productions which can be accessed
     *  via static variables of the respective classes, as well as the setting
     *  of various variables (mostly in the emit class) for small user supplied
     *  items such as the code to scan with.
     */
    protected static void parse_grammar_spec() throws java.lang.Exception
      {
        parser parser_obj;
  
        /* create a parser and parse with it */
        ComplexSymbolFactory csf = new ComplexSymbolFactory();
        parser_obj = new parser(new Lexer(csf),csf);
        parser_obj.setDebugSymbols(opt_do_debugsymbols);
        try {
  	if (opt_do_debug)
            parser_obj.debug_parse();
  	else
            parser_obj.parse();
        } catch (Exception e)
        {
  	/* something threw an exception.  catch it and emit a message so we 
  	   have a line number to work with, then re-throw it */
  	ErrorManager.getManager().emit_error("Internal error: Unexpected exception");
  	throw e;
        }
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Check for unused symbols.  Unreduced productions get checked when
     *  tables are created.
     */
    protected static void check_unused()
      {
        terminal term;
        non_terminal nt;
  
        /* check for unused terminals */
        for (Enumeration t = terminal.all(); t.hasMoreElements(); )
  	{
  	  term = (terminal)t.nextElement();
  
  	  /* don't issue a message for EOF */
  	  if (term == terminal.EOF) continue;
  
  	  /* or error */
  	  if (term == terminal.error) continue;
  
  	  /* is this one unused */
  	  if (term.use_count() == 0)
  	    {
  	      /* count it and warn if we are doing warnings */
  	      emit.unused_term++;
  	      if (!emit.nowarn) 
  		{
  		    ErrorManager.getManager().emit_warning("Terminal \"" + term.name() +  "\" was declared but never used");
  		}
  	    }
  	}
  
        /* check for unused non terminals */
        for (Enumeration n = non_terminal.all(); n.hasMoreElements(); )
  	{
  	  nt = (non_terminal)n.nextElement();
  
  	  /* is this one unused */
  	  if (nt.use_count() == 0)
  	    {
  	      /* count and warn if we are doing warnings */
  	      emit.unused_term++;
  	      if (!emit.nowarn) 
  		{
  		    ErrorManager.getManager().emit_warning("Non terminal \"" + nt.name() +  "\" was declared but never used");
  		}
  	    }
  	}
  
      }
  
    /* . . . . . . . . . . . . . . . . . . . . . . . . .*/
    /* . . Internal Results of Generating the Parser . .*/
    /* . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Start state in the overall state machine. */
    protected static lalr_state start_state;
  
    /** Resulting parse action table. */
    protected static parse_action_table action_table;
  
    /** Resulting reduce-goto table. */
    protected static parse_reduce_table reduce_table;
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Build the (internal) parser from the previously parsed specification.
     *  This includes:<ul>
     *    <li> Computing nullability of non-terminals.
     *    <li> Computing first sets of non-terminals and productions.
     *    <li> Building the viable prefix recognizer machine.
     *    <li> Filling in the (internal) parse tables.
     *    <li> Checking for unreduced productions.
     *  </ul>
     */
    protected static void build_parser() throws internal_error
      {
        /* compute nullability of all non terminals */
        if (opt_do_debug || print_progress) 
  	System.err.println("  Computing non-terminal nullability...");
        non_terminal.compute_nullability();
  
        nullability_end = System.currentTimeMillis();
  
        /* compute first sets of all non terminals */
        if (opt_do_debug || print_progress) 
  	System.err.println("  Computing first sets...");
        non_terminal.compute_first_sets();
  
        first_end = System.currentTimeMillis();
  
        /* build the LR viable prefix recognition machine */
        if (opt_do_debug || print_progress) 
  	System.err.println("  Building state machine...");
        start_state = lalr_state.build_machine(emit.start_production);
  
        machine_end = System.currentTimeMillis();
  
        /* build the LR parser action and reduce-goto tables */
        if (opt_do_debug || print_progress) 
  	System.err.println("  Filling in tables...");
        action_table = new parse_action_table();
        reduce_table = new parse_reduce_table();
        for (Enumeration st = lalr_state.all(); st.hasMoreElements(); )
  	{
  	  lalr_state lst = (lalr_state)st.nextElement();
  	  lst.build_table_entries(
  			                      action_table, reduce_table);
  	}
  
        table_end = System.currentTimeMillis();
  
        /* check and warn for non-reduced productions */
        if (opt_do_debug || print_progress) 
  	System.err.println("  Checking for non-reduced productions...");
        action_table.check_reductions();
  
        reduce_check_end = System.currentTimeMillis();
  
        /* if we have more conflicts than we expected issue a message and die */
        if (emit.num_conflicts > expect_conflicts)
  	{
  	    ErrorManager.getManager().emit_error("*** More conflicts encountered than expected " +
  			     "-- parser generation aborted");
  	  // indicate the problem.
  	  // we'll die on return, after clean up.
  	}
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Call the emit routines necessary to write out the generated parser. */
    protected static void emit_parser() throws internal_error
      {
        emit.symbols(symbol_class_file, include_non_terms, sym_interface);
        emit.parser(parser_class_file, action_table, reduce_table, 
  		  start_state.index(), emit.start_production, opt_compact_red,
  		  suppress_scanner);
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Helper routine to optionally return a plural or non-plural ending. 
     * @param val the numerical value determining plurality.
     */
    protected static String plural(int val)
      {
        if (val == 1)
  	return "";
        else
  	return "s";
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Emit a long summary message to standard error (System.err) which 
     *  summarizes what was found in the specification, how many states were
     *  produced, how many conflicts were found, etc.  A detailed timing 
     *  summary is also produced if it was requested by the user.
     * @param output_produced did the system get far enough to generate code.
     */
    protected static void emit_summary(boolean output_produced)
      {
        final_time = System.currentTimeMillis();
  
        if (no_summary) return;
  
        System.err.println("------- " + version.title_str + 
  			 " Parser Generation Summary -------");
  
        /* error and warning count */
        System.err.println("  " + ErrorManager.getManager().getErrorCount() + " error" + 
  	 plural(ErrorManager.getManager().getErrorCount()) + " and " + ErrorManager.getManager().getWarningCount() + 
  	 " warning" + plural(ErrorManager.getManager().getWarningCount()));
  
        /* basic stats */
        System.err.print("  " + terminal.number() + " terminal" + 
  			 plural(terminal.number()) + ", ");
        System.err.print(non_terminal.number() + " non-terminal" + 
  			 plural(non_terminal.number()) + ", and ");
        System.err.println(production.number() + " production" + 
  			 plural(production.number()) + " declared, ");
        System.err.println("  producing " + lalr_state.number() + 
  			 " unique parse states.");
  
        /* unused symbols */
        System.err.println("  " + emit.unused_term + " terminal" + 
  			 plural(emit.unused_term) + " declared but not used.");
        System.err.println("  " + emit.unused_non_term + " non-terminal" + 
  			 plural(emit.unused_term) + " declared but not used.");
  
        /* productions that didn't reduce */
        System.err.println("  " + emit.not_reduced + " production" + 
  			 plural(emit.not_reduced) + " never reduced.");
  
        /* conflicts */
        System.err.println("  " + emit.num_conflicts + " conflict" +
  			 plural(emit.num_conflicts) + " detected" +
  	                 " (" + expect_conflicts + " expected).");
  
        /* code location */
        if (output_produced)
  	System.err.println("  Code written to \"" + emit.parser_class_name + 
  	        ".java\", and \"" + emit.symbol_const_class_name + ".java\".");
        else
  	System.err.println("  No code produced.");
  
        if (opt_show_timing) show_times();
  
        System.err.println(
  	"---------------------------------------------------- (" + 
  	 version.title_str + ")");
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Produce the optional timing summary as part of an overall summary. */
    protected static void show_times()
      {
        long total_time = final_time - start_time;
  
        System.err.println(". . . . . . . . . . . . . . . . . . . . . . . . . ");
        System.err.println("  Timing Summary");
        System.err.println("    Total time       "
          + timestr(final_time-start_time, total_time));
        System.err.println("      Startup        "
  	+ timestr(prelim_end-start_time, total_time));
        System.err.println("      Parse          "
  	+ timestr(parse_end-prelim_end, total_time) );
        if (check_end != 0)
          System.err.println("      Checking       "
  	    + timestr(check_end-parse_end, total_time));
        if (check_end != 0 && build_end != 0)
          System.err.println("      Parser Build   "
  	    + timestr(build_end-check_end, total_time));
        if (nullability_end != 0 && check_end != 0)
          System.err.println("        Nullability  "
  	    + timestr(nullability_end-check_end, total_time));
        if (first_end != 0 && nullability_end != 0)
          System.err.println("        First sets   "
              + timestr(first_end-nullability_end, total_time));
        if (machine_end != 0 && first_end != 0)
          System.err.println("        State build  " 
  	    + timestr(machine_end-first_end, total_time)); 
        if (table_end != 0 && machine_end != 0)
          System.err.println("        Table build  " 
  	    + timestr(table_end-machine_end, total_time)); 
        if (reduce_check_end != 0 && table_end != 0)
          System.err.println("        Checking     " 
  	    + timestr(reduce_check_end-table_end, total_time));
        if (emit_end != 0 && build_end != 0)
          System.err.println("      Code Output    "
  	    + timestr(emit_end-build_end, total_time));
        if (emit.symbols_time != 0)
  	System.err.println("        Symbols      "
  	    + timestr(emit.symbols_time, total_time));
        if (emit.parser_time != 0)
  	System.err.println("        Parser class "
  	    + timestr(emit.parser_time, total_time));
        if (emit.action_code_time != 0)
  	System.err.println("          Actions    "
  	    + timestr(emit.action_code_time, total_time));
        if (emit.production_table_time != 0)
  	System.err.println("          Prod table "
  	    + timestr(emit.production_table_time, total_time));
        if (emit.action_table_time != 0)
  	System.err.println("          Action tab "
  	    + timestr(emit.action_table_time, total_time));
        if (emit.goto_table_time != 0)
  	System.err.println("          Reduce tab "
  	    + timestr(emit.goto_table_time, total_time));
  
        System.err.println("      Dump Output    "
  	+ timestr(dump_end-emit_end, total_time));
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Helper routine to format a decimal based display of seconds and
     *  percentage of total time given counts of milliseconds.   Note: this
     *  is broken for use with some instances of negative time (since we don't 
     *  use any negative time here, we let if be for now).
     * @param time_val   the value being formatted (in ms).
     * @param total_time total time percentages are calculated against (in ms).
     */
    protected static String timestr(long time_val, long total_time)
      {
        boolean neg;
        long    ms = 0;
        long    sec = 0;
        long    percent10;
        String  pad;
  
        /* work with positives only */
        neg = time_val < 0;
        if (neg) time_val = -time_val;
  
        /* pull out seconds and ms */
        ms = time_val % 1000;
        sec = time_val / 1000;
  
        /* construct a pad to blank fill seconds out to 4 places */
        if (sec < 10)   
  	pad = "   ";
        else if (sec < 100)  
  	pad = "  ";
        else if (sec < 1000) 
  	pad = " ";
        else
  	pad = "";
  
        /* calculate 10 times the percentage of total */
        percent10 = (time_val*1000)/total_time;
  
        /* build and return the output string */
        return (neg ? "-" : "") + pad + sec + "." + 
  	     ((ms%1000)/100) + ((ms%100)/10) + (ms%10) + "sec" +
  	     " (" + percent10/10 + "." + percent10%10 + "%)";
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Produce a human readable dump of the grammar. */
    public static void dump_grammar() throws internal_error
      {
        System.err.println("===== Terminals =====");
        for (int tidx=0, cnt=0; tidx < terminal.number(); tidx++, cnt++)
  	{
  	  System.err.print("["+tidx+"]"+terminal.find(tidx).name()+" ");
  	  if ((cnt+1) % 5 == 0) System.err.println();
  	}
        System.err.println();
        System.err.println();
  
        System.err.println("===== Non terminals =====");
        for (int nidx=0, cnt=0; nidx < non_terminal.number(); nidx++, cnt++)
  	{
  	  System.err.print("["+nidx+"]"+non_terminal.find(nidx).name()+" ");
  	  if ((cnt+1) % 5 == 0) System.err.println();
  	}
        System.err.println();
        System.err.println();
  
  
        System.err.println("===== Productions =====");
        for (int pidx=0; pidx < production.number(); pidx++)
  	{
  	  production prod = production.find(pidx);
  	  System.err.print("["+pidx+"] "+prod.lhs().the_symbol().name() + " ::= ");
  	  for (int i=0; i<prod.rhs_length(); i++)
  	    if (prod.rhs(i).is_action())
  	      System.err.print("{action} ");
  	    else
  	      System.err.print(
  			 ((symbol_part)prod.rhs(i)).the_symbol().name() + " ");
  	  System.err.println();
  	}
        System.err.println();
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Produce a (semi-) human readable dump of the complete viable prefix 
     *  recognition state machine. 
     */
    public static void dump_machine()
      {
        lalr_state ordered[] = new lalr_state[lalr_state.number()];
  
        /* put the states in sorted order for a nicer display */
        for (Enumeration s = lalr_state.all(); s.hasMoreElements(); )
  	{
  	  lalr_state st = (lalr_state)s.nextElement();
  	  ordered[st.index()] = st;
  	}
  
        System.err.println("===== Viable Prefix Recognizer =====");
        for (int i = 0; i<lalr_state.number(); i++)
  	{
  	  if (ordered[i] == start_state) System.err.print("START ");
            System.err.println(ordered[i]);
  	  System.err.println("-------------------");
  	}
      }
  
    /*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*/
  
    /** Produce a (semi-) human readable dumps of the parse tables */
    public static void dump_tables()
      {
        System.err.println(action_table);
        System.err.println(reduce_table);
      }
  
    /*-----------------------------------------------------------*/
  
  }
  
  