--- /dev/null 2013-01-18 16:17:08.886776012 -0800 +++ new/make/tools/src/build/tools/tzdb/ZoneOffsetTransitionRule.java 2013-01-22 16:57:32.000000000 -0800 @@ -0,0 +1,223 @@ +/* + * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +/* + * This file is available under and governed by the GNU General Public + * License version 2 only, as published by the Free Software Foundation. + * However, the following notice accompanied the original version of this + * file: + * + * Copyright (c) 2009-2012, Stephen Colebourne & Michael Nascimento Santos + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * * Neither the name of JSR-310 nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +package build.tools.tzdb; + +import static build.tools.tzdb.Utils.*; +import java.util.Objects; + +/** + * A rule expressing how to create a transition. + *

+ * This class allows rules for identifying future transitions to be expressed. + * A rule might be written in many forms: + *

+ * These different rule types can be expressed and queried. + * + *

Specification for implementors

+ * This class is immutable and thread-safe. + * + * @since 1.8 + */ +final class ZoneOffsetTransitionRule { + + /** + * The month of the month-day of the first day of the cutover week. + * The actual date will be adjusted by the dowChange field. + */ + final int month; + /** + * The day-of-month of the month-day of the cutover week. + * If positive, it is the start of the week where the cutover can occur. + * If negative, it represents the end of the week where cutover can occur. + * The value is the number of days from the end of the month, such that + * {@code -1} is the last day of the month, {@code -2} is the second + * to last day, and so on. + */ + final byte dom; + /** + * The cutover day-of-week, -1 to retain the day-of-month. + */ + final int dow; + /** + * The cutover time in the 'before' offset. + */ + final LocalTime time; + /** + * Whether the cutover time is midnight at the end of day. + */ + final boolean timeEndOfDay; + /** + * The definition of how the local time should be interpreted. + */ + final TimeDefinition timeDefinition; + /** + * The standard offset at the cutover. + */ + final ZoneOffset standardOffset; + /** + * The offset before the cutover. + */ + final ZoneOffset offsetBefore; + /** + * The offset after the cutover. + */ + final ZoneOffset offsetAfter; + + /** + * Creates an instance defining the yearly rule to create transitions between two offsets. + * + * @param month the month of the month-day of the first day of the cutover week, from 1 to 12 + * @param dayOfMonthIndicator the day of the month-day of the cutover week, positive if the week is that + * day or later, negative if the week is that day or earlier, counting from the last day of the month, + * from -28 to 31 excluding 0 + * @param dayOfWeek the required day-of-week, -1 if the month-day should not be changed + * @param time the cutover time in the 'before' offset, not null + * @param timeEndOfDay whether the time is midnight at the end of day + * @param timeDefnition how to interpret the cutover + * @param standardOffset the standard offset in force at the cutover, not null + * @param offsetBefore the offset before the cutover, not null + * @param offsetAfter the offset after the cutover, not null + * @throws IllegalArgumentException if the day of month indicator is invalid + * @throws IllegalArgumentException if the end of day flag is true when the time is not midnight + */ + ZoneOffsetTransitionRule( + int month, + int dayOfMonthIndicator, + int dayOfWeek, + LocalTime time, + boolean timeEndOfDay, + TimeDefinition timeDefnition, + ZoneOffset standardOffset, + ZoneOffset offsetBefore, + ZoneOffset offsetAfter) { + Objects.requireNonNull(time, "time"); + Objects.requireNonNull(timeDefnition, "timeDefnition"); + Objects.requireNonNull(standardOffset, "standardOffset"); + Objects.requireNonNull(offsetBefore, "offsetBefore"); + Objects.requireNonNull(offsetAfter, "offsetAfter"); + if (month < 1 || month > 12) { + throw new IllegalArgumentException("month must be between 1 and 12"); + } + if (dayOfMonthIndicator < -28 || dayOfMonthIndicator > 31 || dayOfMonthIndicator == 0) { + throw new IllegalArgumentException("Day of month indicator must be between -28 and 31 inclusive excluding zero"); + } + if (timeEndOfDay && time.equals(LocalTime.MIDNIGHT) == false) { + throw new IllegalArgumentException("Time must be midnight when end of day flag is true"); + } + this.month = month; + this.dom = (byte) dayOfMonthIndicator; + this.dow = dayOfWeek; + this.time = time; + this.timeEndOfDay = timeEndOfDay; + this.timeDefinition = timeDefnition; + this.standardOffset = standardOffset; + this.offsetBefore = offsetBefore; + this.offsetAfter = offsetAfter; + } + + //----------------------------------------------------------------------- + /** + * Checks if this object equals another. + *

+ * The entire state of the object is compared. + * + * @param otherRule the other object to compare to, null returns false + * @return true if equal + */ + @Override + public boolean equals(Object otherRule) { + if (otherRule == this) { + return true; + } + if (otherRule instanceof ZoneOffsetTransitionRule) { + ZoneOffsetTransitionRule other = (ZoneOffsetTransitionRule) otherRule; + return month == other.month && dom == other.dom && dow == other.dow && + timeDefinition == other.timeDefinition && + time.equals(other.time) && + timeEndOfDay == other.timeEndOfDay && + standardOffset.equals(other.standardOffset) && + offsetBefore.equals(other.offsetBefore) && + offsetAfter.equals(other.offsetAfter); + } + return false; + } + + /** + * Returns a suitable hash code. + * + * @return the hash code + */ + @Override + public int hashCode() { + int hash = ((time.toSecondOfDay() + (timeEndOfDay ? 1 : 0)) << 15) + + (month << 11) + ((dom + 32) << 5) + + ((dow == -1 ? 8 : dow) << 2) + (timeDefinition.ordinal()); + return hash ^ standardOffset.hashCode() ^ + offsetBefore.hashCode() ^ offsetAfter.hashCode(); + } + +}