1 /*
2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
341 */
342 public static <E extends Enum<E>> EnumSet<E> range(E from, E to) {
343 if (from.compareTo(to) > 0)
344 throw new IllegalArgumentException(from + " > " + to);
345 EnumSet<E> result = noneOf(from.getDeclaringClass());
346 result.addRange(from, to);
347 return result;
348 }
349
350 /**
351 * Adds the specified range to this enum set, which is empty prior
352 * to the call.
353 */
354 abstract void addRange(E from, E to);
355
356 /**
357 * Returns a copy of this set.
358 *
359 * @return a copy of this set
360 */
361 public EnumSet<E> clone() {
362 try {
363 return (EnumSet<E>) super.clone();
364 } catch(CloneNotSupportedException e) {
365 throw new AssertionError(e);
366 }
367 }
368
369 /**
370 * Complements the contents of this enum set.
371 */
372 abstract void complement();
373
374 /**
375 * Throws an exception if e is not of the correct type for this enum set.
376 */
377 final void typeCheck(E e) {
378 Class eClass = e.getClass();
379 if (eClass != elementType && eClass.getSuperclass() != elementType)
380 throw new ClassCastException(eClass + " != " + elementType);
381 }
382
383 /**
384 * Returns all of the values comprising E.
385 * The result is uncloned, cached, and shared by all callers.
386 */
387 private static <E extends Enum<E>> E[] getUniverse(Class<E> elementType) {
388 return SharedSecrets.getJavaLangAccess()
389 .getEnumConstantsShared(elementType);
390 }
391
392 /**
393 * This class is used to serialize all EnumSet instances, regardless of
394 * implementation type. It captures their "logical contents" and they
395 * are reconstructed using public static factories. This is necessary
396 * to ensure that the existence of a particular implementation type is
397 * an implementation detail.
398 *
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1 /*
2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
341 */
342 public static <E extends Enum<E>> EnumSet<E> range(E from, E to) {
343 if (from.compareTo(to) > 0)
344 throw new IllegalArgumentException(from + " > " + to);
345 EnumSet<E> result = noneOf(from.getDeclaringClass());
346 result.addRange(from, to);
347 return result;
348 }
349
350 /**
351 * Adds the specified range to this enum set, which is empty prior
352 * to the call.
353 */
354 abstract void addRange(E from, E to);
355
356 /**
357 * Returns a copy of this set.
358 *
359 * @return a copy of this set
360 */
361 @Override
362 public EnumSet<E> clone() {
363 try {
364 @SuppressWarnings("unchecked")
365 EnumSet<E> clone = (EnumSet<E>) super.clone();
366 return clone;
367 } catch(CloneNotSupportedException e) {
368 throw new AssertionError(e);
369 }
370 }
371
372 /**
373 * Complements the contents of this enum set.
374 */
375 abstract void complement();
376
377 /**
378 * Throws an exception if e is not of the correct type for this enum set.
379 */
380 final void typeCheck(E e) {
381 Class<?> eClass = e.getClass();
382 if (eClass != elementType && eClass.getSuperclass() != elementType)
383 throw new ClassCastException(eClass + " != " + elementType);
384 }
385
386 /**
387 * Returns all of the values comprising E.
388 * The result is uncloned, cached, and shared by all callers.
389 */
390 private static <E extends Enum<E>> E[] getUniverse(Class<E> elementType) {
391 return SharedSecrets.getJavaLangAccess()
392 .getEnumConstantsShared(elementType);
393 }
394
395 /**
396 * This class is used to serialize all EnumSet instances, regardless of
397 * implementation type. It captures their "logical contents" and they
398 * are reconstructed using public static factories. This is necessary
399 * to ensure that the existence of a particular implementation type is
400 * an implementation detail.
401 *
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