private void addImplicitDependencies()

in src/main/java/org/apache/maven/plugin/compiler/CompilerMojo.java [268:319]
44 lines of code
12 McCabe index (conditional complexity)

    private void addImplicitDependencies(List<SourceDirectory> sourceDirectories, Map<PathType, List<Path>> addTo)
            throws IOException {
        if (SUPPORT_LEGACY && multiReleaseOutput) {
            var paths = new TreeMap<Integer, Path>();
            Path root = SourceDirectory.outputDirectoryForReleases(outputDirectory);
            Files.walk(root, 1).forEach((path) -> {
                int version;
                if (path.equals(root)) {
                    path = outputDirectory;
                    version = 0;
                } else {
                    try {
                        version = Integer.parseInt(path.getFileName().toString());
                    } catch (NumberFormatException e) {
                        throw new CompilationFailureException("Invalid version number for " + path, e);
                    }
                }
                if (paths.put(version, path) != null) {
                    throw new CompilationFailureException("Duplicated version number for " + path);
                }
            });
            /*
             * Find the module name. If many module-info classes are found,
             * the most basic one (with lowest Java release number) is taken.
             */
            String moduleName = null;
            for (Path path : paths.values()) {
                path = path.resolve(MODULE_INFO + CLASS_FILE_SUFFIX);
                if (Files.exists(path)) {
                    try (InputStream in = Files.newInputStream(path)) {
                        moduleName = ModuleDescriptor.read(in).name();
                    }
                    break;
                }
            }
            /*
             * If no module name was found in the classes compiled for previous Java releases,
             * search in the source files for the Java release of the current compilation unit.
             */
            if (moduleName == null) {
                for (SourceDirectory dir : sourceDirectories) {
                    moduleName = parseModuleInfoName(dir.root.resolve(MODULE_INFO + JAVA_FILE_SUFFIX));
                    if (moduleName != null) {
                        break;
                    }
                }
            }
            var pathType = (moduleName != null) ? JavaPathType.patchModule(moduleName) : JavaPathType.CLASSES;
            addTo.computeIfAbsent(pathType, (key) -> new ArrayList<>())
                    .addAll(paths.descendingMap().values());
        }
    }