--- a/jdk/src/share/classes/java/time/temporal/ISOFields.java Tue Feb 12 16:02:14 2013 +0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,564 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * Copyright (c) 2011-2012, 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 java.time.temporal;
-
-import static java.time.DayOfWeek.THURSDAY;
-import static java.time.DayOfWeek.WEDNESDAY;
-import static java.time.temporal.ChronoField.DAY_OF_WEEK;
-import static java.time.temporal.ChronoField.DAY_OF_YEAR;
-import static java.time.temporal.ChronoField.EPOCH_DAY;
-import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
-import static java.time.temporal.ChronoField.YEAR;
-import static java.time.temporal.ChronoUnit.DAYS;
-import static java.time.temporal.ChronoUnit.FOREVER;
-import static java.time.temporal.ChronoUnit.MONTHS;
-import static java.time.temporal.ChronoUnit.WEEKS;
-import static java.time.temporal.ChronoUnit.YEARS;
-
-import java.time.DateTimeException;
-import java.time.Duration;
-import java.time.LocalDate;
-import java.time.format.DateTimeBuilder;
-
-/**
- * Fields and units specific to the ISO-8601 calendar system,
- * including quarter-of-year and week-based-year.
- * <p>
- * This class defines fields and units that are specific to the ISO calendar system.
- *
- * <h3>Quarter of year</h3>
- * The ISO-8601 standard is based on the standard civic 12 month year.
- * This is commonly divided into four quarters, often abbreviated as Q1, Q2, Q3 and Q4.
- * <p>
- * January, February and March are in Q1.
- * April, May and June are in Q2.
- * July, August and September are in Q3.
- * October, November and December are in Q4.
- * <p>
- * The complete date is expressed using three fields:
- * <p><ul>
- * <li>{@link #DAY_OF_QUARTER DAY_OF_QUARTER} - the day within the quarter, from 1 to 90, 91 or 92
- * <li>{@link #QUARTER_OF_YEAR QUARTER_OF_YEAR} - the week within the week-based-year
- * <li>{@link ChronoField#YEAR YEAR} - the standard ISO year
- * </ul><p>
- *
- * <h3>Week based years</h3>
- * The ISO-8601 standard was originally intended as a data interchange format,
- * defining a string format for dates and times. However, it also defines an
- * alternate way of expressing the date, based on the concept of week-based-year.
- * <p>
- * The date is expressed using three fields:
- * <p><ul>
- * <li>{@link ChronoField#DAY_OF_WEEK DAY_OF_WEEK} - the standard field defining the
- * day-of-week from Monday (1) to Sunday (7)
- * <li>{@link #WEEK_OF_WEEK_BASED_YEAR} - the week within the week-based-year
- * <li>{@link #WEEK_BASED_YEAR WEEK_BASED_YEAR} - the week-based-year
- * </ul><p>
- * The week-based-year itself is defined relative to the standard ISO proleptic year.
- * It differs from the standard year in that it always starts on a Monday.
- * <p>
- * The first week of a week-based-year is the first Monday-based week of the standard
- * ISO year that has at least 4 days in the new year.
- * <p><ul>
- * <li>If January 1st is Monday then week 1 starts on January 1st
- * <li>If January 1st is Tuesday then week 1 starts on December 31st of the previous standard year
- * <li>If January 1st is Wednesday then week 1 starts on December 30th of the previous standard year
- * <li>If January 1st is Thursday then week 1 starts on December 29th of the previous standard year
- * <li>If January 1st is Friday then week 1 starts on January 4th
- * <li>If January 1st is Saturday then week 1 starts on January 3rd
- * <li>If January 1st is Sunday then week 1 starts on January 2nd
- * </ul><p>
- * There are 52 weeks in most week-based years, however on occasion there are 53 weeks.
- * <p>
- * For example:
- * <p>
- * <table cellpadding="0" cellspacing="3" border="0" style="text-align: left; width: 50%;">
- * <caption>Examples of Week based Years</caption>
- * <tr><th>Date</th><th>Day-of-week</th><th>Field values</th></tr>
- * <tr><th>2008-12-28</th><td>Sunday</td><td>Week 52 of week-based-year 2008</td></tr>
- * <tr><th>2008-12-29</th><td>Monday</td><td>Week 1 of week-based-year 2009</td></tr>
- * <tr><th>2008-12-31</th><td>Wednesday</td><td>Week 1 of week-based-year 2009</td></tr>
- * <tr><th>2009-01-01</th><td>Thursday</td><td>Week 1 of week-based-year 2009</td></tr>
- * <tr><th>2009-01-04</th><td>Sunday</td><td>Week 1 of week-based-year 2009</td></tr>
- * <tr><th>2009-01-05</th><td>Monday</td><td>Week 2 of week-based-year 2009</td></tr>
- * </table>
- *
- * <h3>Specification for implementors</h3>
- * <p>
- * This class is immutable and thread-safe.
- *
- * @since 1.8
- */
-public final class ISOFields {
-
- /**
- * The field that represents the day-of-quarter.
- * <p>
- * This field allows the day-of-quarter value to be queried and set.
- * The day-of-quarter has values from 1 to 90 in Q1 of a standard year, from 1 to 91
- * in Q1 of a leap year, from 1 to 91 in Q2 and from 1 to 92 in Q3 and Q4.
- * <p>
- * The day-of-quarter can only be calculated if the day-of-year, month-of-year and year
- * are available.
- * <p>
- * When setting this field, the value is allowed to be partially lenient, taking any
- * value from 1 to 92. If the quarter has less than 92 days, then day 92, and
- * potentially day 91, is in the following quarter.
- * <p>
- * This unit is an immutable and thread-safe singleton.
- */
- public static final TemporalField DAY_OF_QUARTER = Field.DAY_OF_QUARTER;
- /**
- * The field that represents the quarter-of-year.
- * <p>
- * This field allows the quarter-of-year value to be queried and set.
- * The quarter-of-year has values from 1 to 4.
- * <p>
- * The day-of-quarter can only be calculated if the month-of-year is available.
- * <p>
- * This unit is an immutable and thread-safe singleton.
- */
- public static final TemporalField QUARTER_OF_YEAR = Field.QUARTER_OF_YEAR;
- /**
- * The field that represents the week-of-week-based-year.
- * <p>
- * This field allows the week of the week-based-year value to be queried and set.
- * <p>
- * This unit is an immutable and thread-safe singleton.
- */
- public static final TemporalField WEEK_OF_WEEK_BASED_YEAR = Field.WEEK_OF_WEEK_BASED_YEAR;
- /**
- * The field that represents the week-based-year.
- * <p>
- * This field allows the week-based-year value to be queried and set.
- * <p>
- * This unit is an immutable and thread-safe singleton.
- */
- public static final TemporalField WEEK_BASED_YEAR = Field.WEEK_BASED_YEAR;
- /**
- * The unit that represents week-based-years for the purpose of addition and subtraction.
- * <p>
- * This allows a number of week-based-years to be added to, or subtracted from, a date.
- * The unit is equal to either 52 or 53 weeks.
- * The estimated duration of a week-based-year is the same as that of a standard ISO
- * year at {@code 365.2425 Days}.
- * <p>
- * The rules for addition add the number of week-based-years to the existing value
- * for the week-based-year field. If the resulting week-based-year only has 52 weeks,
- * then the date will be in week 1 of the following week-based-year.
- * <p>
- * This unit is an immutable and thread-safe singleton.
- */
- public static final TemporalUnit WEEK_BASED_YEARS = Unit.WEEK_BASED_YEARS;
- /**
- * Unit that represents the concept of a quarter-year.
- * For the ISO calendar system, it is equal to 3 months.
- * The estimated duration of a quarter-year is one quarter of {@code 365.2425 Days}.
- * <p>
- * This unit is an immutable and thread-safe singleton.
- */
- public static final TemporalUnit QUARTER_YEARS = Unit.QUARTER_YEARS;
-
- /**
- * Restricted constructor.
- */
- private ISOFields() {
- throw new AssertionError("Not instantiable");
- }
-
- //-----------------------------------------------------------------------
- /**
- * Implementation of the field.
- */
- private static enum Field implements TemporalField {
- DAY_OF_QUARTER {
- @Override
- public String getName() {
- return "DayOfQuarter";
- }
- @Override
- public TemporalUnit getBaseUnit() {
- return DAYS;
- }
- @Override
- public TemporalUnit getRangeUnit() {
- return QUARTER_YEARS;
- }
- @Override
- public ValueRange range() {
- return ValueRange.of(1, 90, 92);
- }
- @Override
- public boolean doIsSupported(TemporalAccessor temporal) {
- return temporal.isSupported(DAY_OF_YEAR) && temporal.isSupported(MONTH_OF_YEAR) &&
- temporal.isSupported(YEAR) && Chrono.from(temporal).equals(ISOChrono.INSTANCE);
- }
- @Override
- public ValueRange doRange(TemporalAccessor temporal) {
- if (doIsSupported(temporal) == false) {
- throw new DateTimeException("Unsupported field: DayOfQuarter");
- }
- long qoy = temporal.getLong(QUARTER_OF_YEAR);
- if (qoy == 1) {
- long year = temporal.getLong(YEAR);
- return (ISOChrono.INSTANCE.isLeapYear(year) ? ValueRange.of(1, 91) : ValueRange.of(1, 90));
- } else if (qoy == 2) {
- return ValueRange.of(1, 91);
- } else if (qoy == 3 || qoy == 4) {
- return ValueRange.of(1, 92);
- } // else value not from 1 to 4, so drop through
- return range();
- }
- @Override
- public long doGet(TemporalAccessor temporal) {
- if (doIsSupported(temporal) == false) {
- throw new DateTimeException("Unsupported field: DayOfQuarter");
- }
- int doy = temporal.get(DAY_OF_YEAR);
- int moy = temporal.get(MONTH_OF_YEAR);
- long year = temporal.getLong(YEAR);
- return doy - QUARTER_DAYS[((moy - 1) / 3) + (ISOChrono.INSTANCE.isLeapYear(year) ? 4 : 0)];
- }
- @Override
- public <R extends Temporal> R doWith(R temporal, long newValue) {
- long curValue = doGet(temporal);
- range().checkValidValue(newValue, this);
- return (R) temporal.with(DAY_OF_YEAR, temporal.getLong(DAY_OF_YEAR) + (newValue - curValue));
- }
- },
- QUARTER_OF_YEAR {
- @Override
- public String getName() {
- return "QuarterOfYear";
- }
- @Override
- public TemporalUnit getBaseUnit() {
- return QUARTER_YEARS;
- }
- @Override
- public TemporalUnit getRangeUnit() {
- return YEARS;
- }
- @Override
- public ValueRange range() {
- return ValueRange.of(1, 4);
- }
- @Override
- public boolean doIsSupported(TemporalAccessor temporal) {
- return temporal.isSupported(MONTH_OF_YEAR) && Chrono.from(temporal).equals(ISOChrono.INSTANCE);
- }
- @Override
- public long doGet(TemporalAccessor temporal) {
- if (doIsSupported(temporal) == false) {
- throw new DateTimeException("Unsupported field: DayOfQuarter");
- }
- long moy = temporal.getLong(MONTH_OF_YEAR);
- return ((moy + 2) / 3);
- }
- @Override
- public <R extends Temporal> R doWith(R temporal, long newValue) {
- long curValue = doGet(temporal);
- range().checkValidValue(newValue, this);
- return (R) temporal.with(MONTH_OF_YEAR, temporal.getLong(MONTH_OF_YEAR) + (newValue - curValue) * 3);
- }
- @Override
- public boolean resolve(DateTimeBuilder builder, long value) {
- Long[] values = builder.queryFieldValues(YEAR, QUARTER_OF_YEAR, DAY_OF_QUARTER);
- if (values[0] != null && values[1] != null && values[2] != null) {
- int y = YEAR.range().checkValidIntValue(values[0], YEAR);
- int qoy = QUARTER_OF_YEAR.range().checkValidIntValue(values[1], QUARTER_OF_YEAR);
- int doq = DAY_OF_QUARTER.range().checkValidIntValue(values[2], DAY_OF_QUARTER);
- LocalDate date = LocalDate.of(y, ((qoy - 1) * 3) + 1, 1).plusDays(doq - 1);
- builder.addFieldValue(EPOCH_DAY, date.toEpochDay());
- builder.removeFieldValues(QUARTER_OF_YEAR, DAY_OF_QUARTER);
- }
- return false;
- }
- },
- WEEK_OF_WEEK_BASED_YEAR {
- @Override
- public String getName() {
- return "WeekOfWeekBasedYear";
- }
- @Override
- public TemporalUnit getBaseUnit() {
- return WEEKS;
- }
- @Override
- public TemporalUnit getRangeUnit() {
- return WEEK_BASED_YEARS;
- }
- @Override
- public ValueRange range() {
- return ValueRange.of(1, 52, 53);
- }
- @Override
- public boolean doIsSupported(TemporalAccessor temporal) {
- return temporal.isSupported(EPOCH_DAY);
- }
- @Override
- public ValueRange doRange(TemporalAccessor temporal) {
- return getWeekRange(LocalDate.from(temporal));
- }
- @Override
- public long doGet(TemporalAccessor temporal) {
- return getWeek(LocalDate.from(temporal));
- }
- @Override
- public <R extends Temporal> R doWith(R temporal, long newValue) {
- ValueRange.of(1, 53).checkValidValue(newValue, this);
- return (R) temporal.plus(Math.subtractExact(newValue, doGet(temporal)), WEEKS);
- }
- },
- WEEK_BASED_YEAR {
- @Override
- public String getName() {
- return "WeekBasedYear";
- }
- @Override
- public TemporalUnit getBaseUnit() {
- return WEEK_BASED_YEARS;
- }
- @Override
- public TemporalUnit getRangeUnit() {
- return FOREVER;
- }
- @Override
- public ValueRange range() {
- return YEAR.range();
- }
- @Override
- public boolean doIsSupported(TemporalAccessor temporal) {
- return temporal.isSupported(EPOCH_DAY);
- }
- @Override
- public long doGet(TemporalAccessor temporal) {
- return getWeekBasedYear(LocalDate.from(temporal));
- }
- @Override
- public <R extends Temporal> R doWith(R temporal, long newValue) {
- int newVal = range().checkValidIntValue(newValue, WEEK_BASED_YEAR);
- LocalDate date = LocalDate.from(temporal);
- int week = getWeek(date);
- date = date.withDayOfYear(180).withYear(newVal).with(WEEK_OF_WEEK_BASED_YEAR, week);
- return (R) date.with(date);
- }
- @Override
- public boolean resolve(DateTimeBuilder builder, long value) {
- Long[] values = builder.queryFieldValues(WEEK_BASED_YEAR, WEEK_OF_WEEK_BASED_YEAR, DAY_OF_WEEK);
- if (values[0] != null && values[1] != null && values[2] != null) {
- int wby = WEEK_BASED_YEAR.range().checkValidIntValue(values[0], WEEK_BASED_YEAR);
- int week = WEEK_OF_WEEK_BASED_YEAR.range().checkValidIntValue(values[1], WEEK_OF_WEEK_BASED_YEAR);
- int dow = DAY_OF_WEEK.range().checkValidIntValue(values[2], DAY_OF_WEEK);
- LocalDate date = LocalDate.of(wby, 2, 1).with(WEEK_OF_WEEK_BASED_YEAR, week).with(DAY_OF_WEEK, dow);
- builder.addFieldValue(EPOCH_DAY, date.toEpochDay());
- builder.removeFieldValues(WEEK_BASED_YEAR, WEEK_OF_WEEK_BASED_YEAR, DAY_OF_WEEK);
- }
- return false;
- }
- };
-
- @Override
- public ValueRange doRange(TemporalAccessor temporal) {
- return range();
- }
-
- @Override
- public boolean resolve(DateTimeBuilder builder, long value) {
- return false;
- }
-
- @Override
- public String toString() {
- return getName();
- }
-
- //-------------------------------------------------------------------------
- private static final int[] QUARTER_DAYS = {0, 90, 181, 273, 0, 91, 182, 274};
-
- private static ValueRange getWeekRange(LocalDate date) {
- int wby = getWeekBasedYear(date);
- date = date.withDayOfYear(1).withYear(wby);
- // 53 weeks if standard year starts on Thursday, or Wed in a leap year
- if (date.getDayOfWeek() == THURSDAY || (date.getDayOfWeek() == WEDNESDAY && date.isLeapYear())) {
- return ValueRange.of(1, 53);
- }
- return ValueRange.of(1, 52);
- }
-
- private static int getWeek(LocalDate date) {
- int dow0 = date.getDayOfWeek().ordinal();
- int doy0 = date.getDayOfYear() - 1;
- int doyThu0 = doy0 + (3 - dow0); // adjust to mid-week Thursday (which is 3 indexed from zero)
- int alignedWeek = doyThu0 / 7;
- int firstThuDoy0 = doyThu0 - (alignedWeek * 7);
- int firstMonDoy0 = firstThuDoy0 - 3;
- if (firstMonDoy0 < -3) {
- firstMonDoy0 += 7;
- }
- if (doy0 < firstMonDoy0) {
- return (int) getWeekRange(date.withDayOfYear(180).minusYears(1)).getMaximum();
- }
- int week = ((doy0 - firstMonDoy0) / 7) + 1;
- if (week == 53) {
- if ((firstMonDoy0 == -3 || (firstMonDoy0 == -2 && date.isLeapYear())) == false) {
- week = 1;
- }
- }
- return week;
- }
-
- private static int getWeekBasedYear(LocalDate date) {
- int year = date.getYear();
- int doy = date.getDayOfYear();
- if (doy <= 3) {
- int dow = date.getDayOfWeek().ordinal();
- if (doy - dow < -2) {
- year--;
- }
- } else if (doy >= 363) {
- int dow = date.getDayOfWeek().ordinal();
- doy = doy - 363 - (date.isLeapYear() ? 1 : 0);
- if (doy - dow >= 0) {
- year++;
- }
- }
- return year;
- }
- }
-
- //-----------------------------------------------------------------------
- /**
- * Implementation of the period unit.
- */
- private static enum Unit implements TemporalUnit {
-
- /**
- * Unit that represents the concept of a week-based-year.
- */
- WEEK_BASED_YEARS("WeekBasedYears", Duration.ofSeconds(31556952L)),
- /**
- * Unit that represents the concept of a quarter-year.
- */
- QUARTER_YEARS("QuarterYears", Duration.ofSeconds(31556952L / 4));
-
- private final String name;
- private final Duration duration;
-
- private Unit(String name, Duration estimatedDuration) {
- this.name = name;
- this.duration = estimatedDuration;
- }
-
- @Override
- public String getName() {
- return name;
- }
-
- @Override
- public Duration getDuration() {
- return duration;
- }
-
- @Override
- public boolean isDurationEstimated() {
- return true;
- }
-
- @Override
- public boolean isSupported(Temporal temporal) {
- return temporal.isSupported(EPOCH_DAY);
- }
-
- @Override
- public <R extends Temporal> R doPlus(R dateTime, long periodToAdd) {
- switch(this) {
- case WEEK_BASED_YEARS:
- return (R) dateTime.with(WEEK_BASED_YEAR,
- Math.addExact(dateTime.get(WEEK_BASED_YEAR), periodToAdd));
- case QUARTER_YEARS:
- // no overflow (256 is multiple of 4)
- return (R) dateTime.plus(periodToAdd / 256, YEARS)
- .plus((periodToAdd % 256) * 3, MONTHS);
- default:
- throw new IllegalStateException("Unreachable");
- }
- }
-
- @Override
- public <R extends Temporal> SimplePeriod between(R dateTime1, R dateTime2) {
- switch(this) {
- case WEEK_BASED_YEARS:
- long period = Math.subtractExact(dateTime2.getLong(WEEK_BASED_YEAR),
- dateTime1.getLong(WEEK_BASED_YEAR));
- return new SimplePeriod(period, WEEK_BASED_YEARS);
- case QUARTER_YEARS:
- long period2 = Math.subtractExact(dateTime2.getLong(QUARTER_OF_YEAR),
- dateTime1.getLong(QUARTER_OF_YEAR));
- return new SimplePeriod(period2, QUARTER_YEARS);
- default:
- throw new IllegalStateException("Unreachable");
- }
- }
-
- @Override
- public String toString() {
- return getName();
-
- }
- }
-}