warningsByFilename[path] = warning
	}
	processDirectory := func(directory string, processFile func(string)) error {
		err := filepath.Walk(directory, func(path string, info os.FileInfo, err error) error {
			if err != nil {
				return err
			}

			if info.IsDir() {
				return nil
			}

			if isFileFormatValid(path) {
				processFile(path)
			}

			return nil
		})
		return err
	}

func (r *reporter) ExitCode() int {
	return r.getState().exitCode
}

// If info == nil, we are formatting stdin instead of a file.
// If in == nil, the source is the contents of the file with the given filename.
func processFile(filename string, info fs.FileInfo, in io.Reader, r *reporter) error {
	src, err := readFile(filename, info, in)
	if err != nil {
		return err
	}

	fileSet := token.NewFileSet()

          int seen;

          @Override
          public boolean processLine(String line) {
            seen++;
            return false;
          }

          @Override
          public Integer getResult() {
            return seen;
          }
        };
    assertEquals(
        "processLine was called more than once",
        1,
        CharStreams.readLines(r, alwaysFalse).intValue());

          int seen;

          @Override
          public boolean processLine(String line) {
            seen++;
            return false;
          }

          @Override
          public Integer getResult() {
            return seen;
          }
        };
    assertEquals(
        "processLine was called more than once",
        1,
        CharStreams.readLines(r, alwaysFalse).intValue());

    List<String> list =
        lines.readLines(
            new LineProcessor<List<String>>() {
              List<String> list = Lists.newArrayList();

              @Override
              public boolean processLine(String line) throws IOException {
                list.add(line);
                return true;
              }

              @Override
              public List<String> getResult() {

    }

    private void createFatJar(final File outputJar, final Iterable<? extends File> files, final ProgressLogger progressLogger) {
        classpathBuilder.jar(outputJar, builder -> processFiles(builder, files, progressLogger));
    }

    private void processFiles(ClasspathBuilder.EntryBuilder builder, Iterable<? extends File> files, ProgressLogger progressLogger) throws IOException {
        Set<String> seenPaths = new HashSet<>();

                processClassRule(action, metadata, details);
            } else {
                processRule(wrapper.getRule(), metadata, details);
            }
        }
    }

    LineProcessor<List<String>> collect =
        new LineProcessor<List<String>>() {
          List<String> collector = new ArrayList<>();

          @Override
          public boolean processLine(String line) {
            collector.add(line);
            return true;
          }

          @Override
          public List<String> getResult() {
            return collector;
          }

        }

        private class MetadataLineProcessor implements LineProcessor<List<String>> {
            private List<String> lines = new ArrayList<>();

            @Override
            public boolean processLine(String line) {
                int commentStart = line.indexOf('#');
                if (commentStart >= 0) {
                    line = line.substring(0, commentStart);
                }

    LineProcessor<List<String>> collect =
        new LineProcessor<List<String>>() {
          List<String> collector = new ArrayList<>();

          @Override
          public boolean processLine(String line) {
            collector.add(line);
            return true;
          }

          @Override
          public List<String> getResult() {
            return collector;
          }