+
+ /**
+ * Throw an IllegalArgument exception describing a range violation of an Uint64 type.
+ *
+ * @param expected String describing expected ranges
+ * @param actual Actual observed value
+ * @throws IllegalArgumentException always
+ */
+ public static void throwInvalidRangeUnsigned(final String expected, final long actual) {
+ throw new IllegalArgumentException("Invalid range: " + Long.toUnsignedString(actual) + ", expected: " + expected
+ + ".");
+ }
+
+ /**
+ * Check whether specified List is null and if so return an immutable list instead. This method supports
+ * non-null default getter methods.
+ *
+ * @param input input list, may be null
+ * @return Input list or an empty list.
+ */
+ public static <T> @NonNull List<T> nonnull(final @Nullable List<T> input) {
+ return input != null ? input : ImmutableList.of();
+ }
+
+ /**
+ * Return hash code of a single-property wrapper class. Since the wrapper is not null, we really want to discern
+ * this object being present, hence {@link Objects#hashCode()} is not really useful we would end up with {@code 0}
+ * for both non-present and present-with-null objects.
+ *
+ * @param obj Internal object to hash
+ * @return Wrapper object hash code
+ */
+ public static int wrapperHashCode(final @Nullable Object obj) {
+ return wrapHashCode(Objects.hashCode(obj));
+ }
+
+ /**
+ * Return hash code of a single-property wrapper class. Since the wrapper is not null, we really want to discern
+ * this object being present, hence {@link Arrays#hashCode()} is not really useful we would end up with {@code 0}
+ * for both non-present and present-with-null objects.
+ *
+ * @param obj Internal object to hash
+ * @return Wrapper object hash code
+ */
+ public static int wrapperHashCode(final byte @Nullable[] obj) {
+ return wrapHashCode(Arrays.hashCode(obj));
+ }
+
+ /**
+ * Compatibility utility for converting a legacy {@link Short} {@code uint8} value to its {@link Uint8}
+ * counterpart.
+ *
+ * @param value Legacy value
+ * @return Converted value
+ * @throws IllegalArgumentException if the value does not fit an Uint8
+ * @deprecated This method is provided for migration purposes only, do not use it outside of deprecated
+ * compatibility methods.
+ */
+ @Deprecated
+ public static @Nullable Uint8 compatUint(final @Nullable Short value) {
+ return value == null ? null : Uint8.valueOf(value.shortValue());
+ }
+
+ /**
+ * Compatibility utility for converting a legacy {@link Integer} {@code uint16} value to its {@link Uint16}
+ * counterpart.
+ *
+ * @param value Legacy value
+ * @return Converted value
+ * @throws IllegalArgumentException if the value does not fit an Uint16
+ * @deprecated This method is provided for migration purposes only, do not use it outside of deprecated
+ * compatibility methods.
+ */
+ @Deprecated
+ public static @Nullable Uint16 compatUint(final @Nullable Integer value) {
+ return value == null ? null : Uint16.valueOf(value.intValue());
+ }
+
+ /**
+ * Compatibility utility for converting a legacy {@link Long} {@code uint32} value to its {@link Uint32}
+ * counterpart.
+ *
+ * @param value Legacy value
+ * @return Converted value
+ * @throws IllegalArgumentException if the value does not fit an Uint32
+ * @deprecated This method is provided for migration purposes only, do not use it outside of deprecated
+ * compatibility methods.
+ */
+ @Deprecated
+ public static @Nullable Uint32 compatUint(final @Nullable Long value) {
+ return value == null ? null : Uint32.valueOf(value.longValue());
+ }
+
+ /**
+ * Compatibility utility for converting a legacy {@link BigInteger} {@code uint64} value to its {@link Uint64}
+ * counterpart.
+ *
+ * @param value Legacy value
+ * @return Converted value
+ * @throws IllegalArgumentException if the value does not fit an Uint64
+ * @deprecated This method is provided for migration purposes only, do not use it outside of deprecated
+ * compatibility methods.
+ */
+ @Deprecated
+ public static @Nullable Uint64 compatUint(final @Nullable BigInteger value) {
+ return value == null ? null : Uint64.valueOf(value);
+ }
+
+ /**
+ * The constant '31' is the result of folding this code:
+ * <pre>
+ * final int prime = 31;
+ * int result = 1;
+ * result = result * prime + Objects.hashCode(obj);
+ * return result;
+ * </pre>
+ * when hashCode is returned as 0, such as due to obj being null or its hashCode being 0.
+ *
+ * @param hash Wrapped object hash
+ * @return Wrapper object hash
+ */
+ private static int wrapHashCode(final int hash) {
+ return hash == 0 ? 31 : hash;
+ }