public String generate()

in jflex/src/main/java/jflex/generator/LexGenerator.java [54:138]
61 lines of code
13 McCabe index (conditional complexity)

  public String generate() {

    Out.resetCounters();

    Timer time = new Timer();

    totalTime.start();

    try (Reader inputReader =
        new InputStreamReader(
            Files.newInputStream(Paths.get(inputFile.toString())), Options.encoding)) {
      Out.println(ErrorMessages.READING, inputFile.toString());
      LexScan scanner = new LexScan(inputReader);
      scanner.setFile(inputFile);
      LexParse parser = new LexParse(scanner);

      NFA nfa = (NFA) parser.parse().value;

      Out.checkErrors();

      if (Options.dump) Out.dump(ErrorMessages.get(ErrorMessages.NFA_IS) + Out.NL + nfa + Out.NL);

      if (Options.dot) nfa.writeDot(Emitter.normalize("nfa.dot", null)); // $NON-NLS-1$

      Out.println(ErrorMessages.NFA_STATES, nfa.numStates());

      time.start();
      dfa = DfaFactory.createFromNfa(nfa);
      time.stop();
      Out.time(ErrorMessages.DFA_TOOK, time);

      dfa.checkActions(scanner, parser);

      if (Options.dump) Out.dump(ErrorMessages.get(ErrorMessages.DFA_IS) + Out.NL + dfa + Out.NL);

      if (Options.dot) dfa.writeDot(Emitter.normalize("dfa-big.dot", null)); // $NON-NLS-1$

      Out.checkErrors();

      time.start();
      int numStatesBefore = dfa.numStates();
      dfa.minimize();
      Out.println(
          String.format(
              "%d states before minimization, %d states in minimized DFA",
              numStatesBefore, dfa.numStates()));
      time.stop();

      Out.time(ErrorMessages.MIN_TOOK, time);

      if (Options.dump) Out.dump(ErrorMessages.get(ErrorMessages.MIN_DFA_IS) + Out.NL + dfa);

      if (Options.dot) dfa.writeDot(Emitter.normalize("dfa-min.dot", null)); // $NON-NLS-1$

      time.start();

      Emitter emitter = Emitters.createFileEmitter(inputFile, parser, dfa);
      emitter.emit();

      time.stop();

      Out.time(ErrorMessages.WRITE_TOOK, time);

      totalTime.stop();

      Out.time(ErrorMessages.TOTAL_TIME, totalTime);
      return emitter.outputFileName;
    } catch (ScannerException e) {
      Out.error(e.file, e.message, e.line, e.column);
      throw new GeneratorException(e);
    } catch (MacroException e) {
      Out.error(e.getMessage());
      throw new GeneratorException(e);
    } catch (IOException e) {
      Out.error(ErrorMessages.IO_ERROR, e.toString());
      throw new GeneratorException(e);
    } catch (OutOfMemoryError e) {
      Out.error(ErrorMessages.OUT_OF_MEMORY);
      throw new GeneratorException(e);
    } catch (GeneratorException e) {
      throw e;
    } catch (Exception e) {
      throw new GeneratorException(e, true);
    }
  }