Class ModuleRef

src/main/java/io/github/classgraph/ModuleRef.java:42–318

A ModuleReference proxy, written using reflection to preserve backwards compatibility with JDK 7 and 8.

/** A ModuleReference proxy, written using reflection to preserve backwards compatibility with JDK 7 and 8. */
public class ModuleRef implements Comparable<ModuleRef> {
    /** The name of the module. */
    private final String name;

    /** The ModuleReference for the module. */
    private final Object reference;

    /** The ModuleLayer for the module. */
    private final Object layer;

    /** The ModuleDescriptor for the module. */
    private final Object descriptor;

    /** The packages in the module. */
    private final List<String> packages;

    /** The location URI for the module (may be null). */
    private final URI location;

    /** The location URI for the module, as a cached string (may be null). */
    private String locationStr;

    /** A file formed from the location URI. The file will not exist if the location URI is a "jrt:" URI. */
    private File locationFile;

    /** The raw module version, or null if none. */
    private String rawVersion;

    /** The ClassLoader that loads classes in the module. May be null, to represent the bootstrap classloader. */
    private final ClassLoader classLoader;

    ReflectionUtils reflectionUtils;

    /**
     * Constructor.
     *
     * @param moduleReference
     *            The module reference, of JPMS type ModuleReference.
     * @param moduleLayer
     *            The module layer, of JPMS type ModuleLayer
     * @param reflectionUtils
     *            The ReflectionUtils instance.
     */
    public ModuleRef(final Object moduleReference, final Object moduleLayer,
            final ReflectionUtils reflectionUtils) {
        if (moduleReference == null) {
            throw new IllegalArgumentException("moduleReference cannot be null");
        }
        if (moduleLayer == null) {
            throw new IllegalArgumentException("moduleLayer cannot be null");
        }
        this.reference = moduleReference;
        this.layer = moduleLayer;
        this.reflectionUtils = reflectionUtils;

        this.descriptor = reflectionUtils.invokeMethod(/* throwException = */ true, moduleReference, "descriptor");
        if (this.descriptor == null) {
            // Should not happen