jdk8-mips64-public/nashorn: src/jdk/nashorn/internal/objects/NativeDate.java@e597c5975dac (annotated)

src/jdk/nashorn/internal/objects/NativeDate.java@e597c5975dac (annotated)

src/jdk/nashorn/internal/objects/NativeDate.java

Wed, 25 Mar 2015 14:36:22 +0530

author: sundar
date: Wed, 25 Mar 2015 14:36:22 +0530
changeset 1267: e597c5975dac
parent 1251: 85a6a7545dbe
child 1490: d85f981c8cf8
child 1721: bfc671539e50
permissions: -rw-r--r--

8012190: Global scope should be initialized lazily
Reviewed-by: lagergren, hannesw, attila

 /*
  * Copyright (c) 2010, 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.
  */
 package jdk.nashorn.internal.objects;
 import static java.lang.Double.NaN;
 import static java.lang.Double.isInfinite;
 import static java.lang.Double.isNaN;
 import static jdk.nashorn.internal.runtime.ECMAErrors.rangeError;
 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
 import java.util.Locale;
 import java.util.TimeZone;
 import java.util.concurrent.Callable;
 import jdk.nashorn.internal.objects.annotations.Attribute;
 import jdk.nashorn.internal.objects.annotations.Constructor;
 import jdk.nashorn.internal.objects.annotations.Function;
 import jdk.nashorn.internal.objects.annotations.ScriptClass;
 import jdk.nashorn.internal.objects.annotations.SpecializedFunction;
 import jdk.nashorn.internal.objects.annotations.Where;
 import jdk.nashorn.internal.parser.DateParser;
 import jdk.nashorn.internal.runtime.JSType;
 import jdk.nashorn.internal.runtime.PropertyMap;
 import jdk.nashorn.internal.runtime.ScriptEnvironment;
 import jdk.nashorn.internal.runtime.ScriptObject;
 import jdk.nashorn.internal.runtime.ScriptRuntime;
 import jdk.nashorn.internal.runtime.linker.Bootstrap;
 import jdk.nashorn.internal.runtime.linker.InvokeByName;
 /**
  * ECMA 15.9 Date Objects
  *
  */
 @ScriptClass("Date")
 public final class NativeDate extends ScriptObject {
     private static final String INVALID_DATE = "Invalid Date";
     private static final int YEAR        = 0;
     private static final int MONTH       = 1;
     private static final int DAY         = 2;
     private static final int HOUR        = 3;
     private static final int MINUTE      = 4;
     private static final int SECOND      = 5;
     private static final int MILLISECOND = 6;
     private static final int FORMAT_DATE_TIME       = 0;
     private static final int FORMAT_DATE            = 1;
     private static final int FORMAT_TIME            = 2;
     private static final int FORMAT_LOCAL_DATE_TIME = 3;
     private static final int FORMAT_LOCAL_DATE      = 4;
     private static final int FORMAT_LOCAL_TIME      = 5;
     // Constants defined in ECMA 15.9.1.10
     private static final int    hoursPerDay      = 24;
     private static final int    minutesPerHour   = 60;
     private static final int    secondsPerMinute = 60;
     private static final int    msPerSecond   = 1_000;
     private static final int    msPerMinute  = 60_000;
     private static final double msPerHour = 3_600_000;
     private static final double msPerDay = 86_400_000;
     private static int[][] firstDayInMonth = {
             {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334}, // normal year
             {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335}  // leap year
     };
     private static String[] weekDays = {
             "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
     };
     private static String[] months = {
             "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
     };
     private static final Object TO_ISO_STRING = new Object();
     private static InvokeByName getTO_ISO_STRING() {
         return Global.instance().getInvokeByName(TO_ISO_STRING,
                 new Callable<InvokeByName>() {
                     @Override
                     public InvokeByName call() {
                         return new InvokeByName("toISOString", ScriptObject.class, Object.class, Object.class);
                     }
                 });
     }
     private double time;
     private final TimeZone timezone;
     // initialized by nasgen
     private static PropertyMap $nasgenmap$;
     private NativeDate(final double time, final ScriptObject proto, final PropertyMap map) {
         super(proto, map);
         final ScriptEnvironment env = Global.getEnv();
         this.time = time;
         this.timezone = env._timezone;
     }
     NativeDate(final double time, final ScriptObject proto) {
         this(time, proto, $nasgenmap$);
     }
     NativeDate(final double time, final Global global) {
         this(time, global.getDatePrototype(), $nasgenmap$);
     }
     private NativeDate (final double time) {
         this(time, Global.instance());
     }
     private NativeDate() {
         this(System.currentTimeMillis());
     }
     @Override
     public String getClassName() {
         return "Date";
     }
     // ECMA 8.12.8 [[DefaultValue]] (hint)
     @Override
     public Object getDefaultValue(final Class<?> hint) {
         // When the [[DefaultValue]] internal method of O is called with no hint,
         // then it behaves as if the hint were Number, unless O is a Date object
         // in which case it behaves as if the hint were String.
         return super.getDefaultValue(hint == null ? String.class : hint);
     }
     /**
      * Constructor - ECMA 15.9.3.1 new Date
      *
      * @param isNew is this Date constructed with the new operator
      * @param self  self references
      * @return Date representing now
      */
     @SpecializedFunction(isConstructor=true)
     public static Object construct(final boolean isNew, final Object self) {
         final NativeDate result = new NativeDate();
         return isNew ? result : toStringImpl(result, FORMAT_DATE_TIME);
     }
     /**
      * Constructor - ECMA 15.9.3.1 new Date (year, month [, date [, hours [, minutes [, seconds [, ms ] ] ] ] ] )
      *
      * @param isNew is this Date constructed with the new operator
      * @param self  self reference
      * @param args  arguments
      * @return new Date
      */
     @Constructor(arity = 7)
     public static Object construct(final boolean isNew, final Object self, final Object... args) {
         if (! isNew) {
             return toStringImpl(new NativeDate(), FORMAT_DATE_TIME);
         }
         NativeDate result;
         switch (args.length) {
         case 0:
             result = new NativeDate();
             break;
         case 1:
             double num;
             final Object arg = JSType.toPrimitive(args[0]);
             if (JSType.isString(arg)) {
                 num = parseDateString(arg.toString());
             } else {
                 num = timeClip(JSType.toNumber(args[0]));
             }
             result = new NativeDate(num);
             break;
         default:
             result = new NativeDate(0);
             final double[] d = convertCtorArgs(args);
             if (d == null) {
                 result.setTime(Double.NaN);
             } else {
                 final double time = timeClip(utc(makeDate(d), result.getTimeZone()));
                 result.setTime(time);
             }
             break;
          }
          return result;
     }
     @Override
     public String safeToString() {
         final String str = isValidDate() ? toISOStringImpl(this) : INVALID_DATE;
         return "[Date " + str + "]";
     }
     @Override
     public String toString() {
         return isValidDate() ? toString(this).toString() : INVALID_DATE;
     }
     /**
      * ECMA 15.9.4.2 Date.parse (string)
      *
      * @param self self reference
      * @param string string to parse as date
      * @return Date interpreted from the string, or NaN for illegal values
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
     public static double parse(final Object self, final Object string) {
         return parseDateString(JSType.toString(string));
     }
     /**
      * ECMA 15.9.4.3 Date.UTC (year, month [, date [, hours [, minutes [, seconds [, ms ] ] ] ] ] )
      *
      * @param self self reference
      * @param args mandatory args are year, month. Optional are date, hours, minutes, seconds and milliseconds
      * @return a time clip according to the ECMA specification
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 7, where = Where.CONSTRUCTOR)
     public static double UTC(final Object self, final Object... args) {
         final NativeDate nd = new NativeDate(0);
         final double[] d = convertCtorArgs(args);
         final double time = d == null ? Double.NaN : timeClip(makeDate(d));
         nd.setTime(time);
         return time;
     }
     /**
      * ECMA 15.9.4.4 Date.now ( )
      *
      * @param self self reference
      * @return a Date that points to the current moment in time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, where = Where.CONSTRUCTOR)
     public static long now(final Object self) {
         return System.currentTimeMillis();
     }
     /**
      * ECMA 15.9.5.2 Date.prototype.toString ( )
      *
      * @param self self reference
      * @return string value that represents the Date in the current time zone
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toString(final Object self) {
         return toStringImpl(self, FORMAT_DATE_TIME);
     }
     /**
      * ECMA 15.9.5.3 Date.prototype.toDateString ( )
      *
      * @param self self reference
      * @return string value with the "date" part of the Date in the current time zone
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toDateString(final Object self) {
         return toStringImpl(self, FORMAT_DATE);
     }
     /**
      * ECMA 15.9.5.4 Date.prototype.toTimeString ( )
      *
      * @param self self reference
      * @return string value with "time" part of Date in the current time zone
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toTimeString(final Object self) {
         return toStringImpl(self, FORMAT_TIME);
     }
     /**
      * ECMA 15.9.5.5 Date.prototype.toLocaleString ( )
      *
      * @param self self reference
      * @return string value that represents the Data in the current time zone and locale
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toLocaleString(final Object self) {
         return toStringImpl(self, FORMAT_LOCAL_DATE_TIME);
     }
     /**
      * ECMA 15.9.5.6 Date.prototype.toLocaleDateString ( )
      *
      * @param self self reference
      * @return string value with the "date" part of the Date in the current time zone and locale
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toLocaleDateString(final Object self) {
         return toStringImpl(self, FORMAT_LOCAL_DATE);
     }
     /**
      * ECMA 15.9.5.7 Date.prototype.toLocaleTimeString ( )
      *
      * @param self self reference
      * @return string value with the "time" part of Date in the current time zone and locale
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toLocaleTimeString(final Object self) {
         return toStringImpl(self, FORMAT_LOCAL_TIME);
     }
     /**
      * ECMA 15.9.5.8 Date.prototype.valueOf ( )
      *
      * @param self self reference
      * @return valueOf - a number which is this time value
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double valueOf(final Object self) {
         final NativeDate nd = getNativeDate(self);
         return (nd != null) ? nd.getTime() : Double.NaN;
     }
     /**
      * ECMA 15.9.5.9 Date.prototype.getTime ( )
      *
      * @param self self reference
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getTime(final Object self) {
         final NativeDate nd = getNativeDate(self);
         return (nd != null) ? nd.getTime() : Double.NaN;
     }
     /**
      * ECMA 15.9.5.10 Date.prototype.getFullYear ( )
      *
      * @param self self reference
      * @return full year
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object getFullYear(final Object self) {
         return getField(self, YEAR);
     }
     /**
      * ECMA 15.9.5.11 Date.prototype.getUTCFullYear( )
      *
      * @param self self reference
      * @return UTC full year
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getUTCFullYear(final Object self) {
         return getUTCField(self, YEAR);
     }
     /**
      * B.2.4 Date.prototype.getYear ( )
      *
      * @param self self reference
      * @return year
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getYear(final Object self) {
         final NativeDate nd = getNativeDate(self);
         return (nd != null && nd.isValidDate()) ? (yearFromTime(nd.getLocalTime()) - 1900) : Double.NaN;
     }
     /**
      * ECMA 15.9.5.12 Date.prototype.getMonth ( )
      *
      * @param self self reference
      * @return month
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getMonth(final Object self) {
         return getField(self, MONTH);
     }
     /**
      * ECMA 15.9.5.13 Date.prototype.getUTCMonth ( )
      *
      * @param self self reference
      * @return UTC month
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getUTCMonth(final Object self) {
         return getUTCField(self, MONTH);
     }
     /**
      * ECMA 15.9.5.14 Date.prototype.getDate ( )
      *
      * @param self self reference
      * @return date
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getDate(final Object self) {
         return getField(self, DAY);
     }
     /**
      * ECMA 15.9.5.15 Date.prototype.getUTCDate ( )
      *
      * @param self self reference
      * @return UTC Date
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getUTCDate(final Object self) {
         return getUTCField(self, DAY);
     }
     /**
      * ECMA 15.9.5.16 Date.prototype.getDay ( )
      *
      * @param self self reference
      * @return day
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getDay(final Object self) {
         final NativeDate nd = getNativeDate(self);
         return (nd != null && nd.isValidDate()) ? weekDay(nd.getLocalTime()) : Double.NaN;
     }
     /**
      * ECMA 15.9.5.17 Date.prototype.getUTCDay ( )
      *
      * @param self self reference
      * @return UTC day
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getUTCDay(final Object self) {
         final NativeDate nd = getNativeDate(self);
         return (nd != null && nd.isValidDate()) ? weekDay(nd.getTime()) : Double.NaN;
     }
     /**
      * ECMA 15.9.5.18 Date.prototype.getHours ( )
      *
      * @param self self reference
      * @return hours
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getHours(final Object self) {
         return getField(self, HOUR);
     }
     /**
      * ECMA 15.9.5.19 Date.prototype.getUTCHours ( )
      *
      * @param self self reference
      * @return UTC hours
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getUTCHours(final Object self) {
         return getUTCField(self, HOUR);
     }
     /**
      * ECMA 15.9.5.20 Date.prototype.getMinutes ( )
      *
      * @param self self reference
      * @return minutes
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getMinutes(final Object self) {
         return getField(self, MINUTE);
     }
     /**
      * ECMA 15.9.5.21 Date.prototype.getUTCMinutes ( )
      *
      * @param self self reference
      * @return UTC minutes
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getUTCMinutes(final Object self) {
         return getUTCField(self, MINUTE);
     }
     /**
      * ECMA 15.9.5.22 Date.prototype.getSeconds ( )
      *
      * @param self self reference
      * @return seconds
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getSeconds(final Object self) {
         return getField(self, SECOND);
     }
     /**
      * ECMA 15.9.5.23 Date.prototype.getUTCSeconds ( )
      *
      * @param self self reference
      * @return UTC seconds
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getUTCSeconds(final Object self) {
         return getUTCField(self, SECOND);
     }
     /**
      * ECMA 15.9.5.24 Date.prototype.getMilliseconds ( )
      *
      * @param self self reference
      * @return milliseconds
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getMilliseconds(final Object self) {
         return getField(self, MILLISECOND);
     }
     /**
      * ECMA 15.9.5.25 Date.prototype.getUTCMilliseconds ( )
      *
      * @param self self reference
      * @return UTC milliseconds
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getUTCMilliseconds(final Object self) {
         return getUTCField(self, MILLISECOND);
     }
     /**
      * ECMA 15.9.5.26 Date.prototype.getTimezoneOffset ( )
      *
      * @param self self reference
      * @return time zone offset or NaN if N/A
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double getTimezoneOffset(final Object self) {
         final NativeDate nd = getNativeDate(self);
         if (nd != null && nd.isValidDate()) {
             final long msec = (long) nd.getTime();
             return - nd.getTimeZone().getOffset(msec) / msPerMinute;
         }
         return Double.NaN;
     }
     /**
      * ECMA 15.9.5.27 Date.prototype.setTime (time)
      *
      * @param self self reference
      * @param time time
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double setTime(final Object self, final Object time) {
         final NativeDate nd  = getNativeDate(self);
         final double     num = timeClip(JSType.toNumber(time));
         nd.setTime(num);
         return num;
     }
     /**
      * ECMA 15.9.5.28 Date.prototype.setMilliseconds (ms)
      *
      * @param self self reference
      * @param args milliseconds
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 1)
     public static double setMilliseconds(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, MILLISECOND, args, true);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.29 Date.prototype.setUTCMilliseconds (ms)
      *
      * @param self self reference
      * @param args utc milliseconds
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 1)
     public static double setUTCMilliseconds(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, MILLISECOND, args, false);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.30 Date.prototype.setSeconds (sec [, ms ] )
      *
      * @param self self reference
      * @param args seconds (milliseconds optional second argument)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 2)
     public static double setSeconds(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, SECOND, args, true);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.31 Date.prototype.setUTCSeconds (sec [, ms ] )
      *
      * @param self self reference
      * @param args UTC seconds (milliseconds optional second argument)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 2)
     public static double setUTCSeconds(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, SECOND, args, false);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.32 Date.prototype.setMinutes (min [, sec [, ms ] ] )
      *
      * @param self self reference
      * @param args minutes (seconds and milliseconds are optional second and third arguments)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 3)
     public static double setMinutes(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, MINUTE, args, true);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.33 Date.prototype.setUTCMinutes (min [, sec [, ms ] ] )
      *
      * @param self self reference
      * @param args minutes (seconds and milliseconds are optional second and third arguments)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 3)
     public static double setUTCMinutes(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, MINUTE, args, false);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.34 Date.prototype.setHours (hour [, min [, sec [, ms ] ] ] )
      *
      * @param self self reference
      * @param args hour (optional arguments after are minutes, seconds, milliseconds)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 4)
     public static double setHours(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, HOUR, args, true);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.35 Date.prototype.setUTCHours (hour [, min [, sec [, ms ] ] ] )
      *
      * @param self self reference
      * @param args hour (optional arguments after are minutes, seconds, milliseconds)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 4)
     public static double setUTCHours(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, HOUR, args, false);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.36 Date.prototype.setDate (date)
      *
      * @param self self reference
      * @param args date
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 1)
     public static double setDate(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, DAY, args, true);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.37 Date.prototype.setUTCDate (date)
      *
      * @param self self reference
      * @param args UTC date
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 1)
     public static double setUTCDate(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, DAY, args, false);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.38 Date.prototype.setMonth (month [, date ] )
      *
      * @param self self reference
      * @param args month (optional second argument is date)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 2)
     public static double setMonth(final Object self, final Object... args) {
         final NativeDate nd = getNativeDate(self);
         setFields(nd, MONTH, args, true);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.39 Date.prototype.setUTCMonth (month [, date ] )
      *
      * @param self self reference
      * @param args UTC month (optional second argument is date)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 2)
     public static double setUTCMonth(final Object self, final Object... args) {
         final NativeDate nd = ensureNativeDate(self);
         setFields(nd, MONTH, args, false);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.40 Date.prototype.setFullYear (year [, month [, date ] ] )
      *
      * @param self self reference
      * @param args year (optional second and third arguments are month and date)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 3)
     public static double setFullYear(final Object self, final Object... args) {
         final NativeDate nd   = ensureNativeDate(self);
         if (nd.isValidDate()) {
             setFields(nd, YEAR, args, true);
         } else {
             final double[] d = convertArgs(args, 0, YEAR, YEAR, 3);
             if (d != null) {
                 nd.setTime(timeClip(utc(makeDate(makeDay(d[0], d[1], d[2]), 0), nd.getTimeZone())));
             } else {
                 nd.setTime(NaN);
             }
         }
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.41 Date.prototype.setUTCFullYear (year [, month [, date ] ] )
      *
      * @param self self reference
      * @param args UTC full year (optional second and third arguments are month and date)
      * @return time
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE, arity = 3)
     public static double setUTCFullYear(final Object self, final Object... args) {
         final NativeDate nd   = ensureNativeDate(self);
         if (nd.isValidDate()) {
             setFields(nd, YEAR, args, false);
         } else {
             final double[] d = convertArgs(args, 0, YEAR, YEAR, 3);
             nd.setTime(timeClip(makeDate(makeDay(d[0], d[1], d[2]), 0)));
         }
         return nd.getTime();
     }
     /**
      * ECMA B.2.5 Date.prototype.setYear (year)
      *
      * @param self self reference
      * @param year year
      * @return NativeDate
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static double setYear(final Object self, final Object year) {
         final NativeDate nd = getNativeDate(self);
         if (isNaN(nd.getTime())) {
             nd.setTime(utc(0, nd.getTimeZone()));
         }
         final double yearNum = JSType.toNumber(year);
         if (isNaN(yearNum)) {
             nd.setTime(NaN);
             return nd.getTime();
         }
         int yearInt = (int)yearNum;
         if (0 <= yearInt && yearInt <= 99) {
             yearInt += 1900;
         }
         setFields(nd, YEAR, new Object[] {yearInt}, true);
         return nd.getTime();
     }
     /**
      * ECMA 15.9.5.42 Date.prototype.toUTCString ( )
      *
      * @param self self reference
      * @return string representation of date
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toUTCString(final Object self) {
         return toGMTStringImpl(self);
     }
     /**
      * ECMA B.2.6 Date.prototype.toGMTString ( )
      *
      * See {@link NativeDate#toUTCString(Object)}
      *
      * @param self self reference
      * @return string representation of date
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toGMTString(final Object self) {
         return toGMTStringImpl(self);
     }
     /**
      * ECMA 15.9.5.43 Date.prototype.toISOString ( )
      *
      * @param self self reference
      * @return string representation of date
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static String toISOString(final Object self) {
         return toISOStringImpl(self);
     }
     /**
      * ECMA 15.9.5.44 Date.prototype.toJSON ( key )
      *
      * Provides a string representation of this Date for use by {@link NativeJSON#stringify(Object, Object, Object, Object)}
      *
      * @param self self reference
      * @param key ignored
      * @return JSON representation of this date
      */
     @Function(attributes = Attribute.NOT_ENUMERABLE)
     public static Object toJSON(final Object self, final Object key) {
         // NOTE: Date.prototype.toJSON is generic. Accepts other objects as well.
         final Object selfObj = Global.toObject(self);
         if (!(selfObj instanceof ScriptObject)) {
             return null;
         }
         final ScriptObject sobj  = (ScriptObject)selfObj;
         final Object       value = sobj.getDefaultValue(Number.class);
         if (value instanceof Number) {
             final double num = ((Number)value).doubleValue();
             if (isInfinite(num) || isNaN(num)) {
                 return null;
             }
         }
         try {
             final InvokeByName toIsoString = getTO_ISO_STRING();
             final Object func = toIsoString.getGetter().invokeExact(sobj);
             if (Bootstrap.isCallable(func)) {
                 return toIsoString.getInvoker().invokeExact(func, sobj, key);
             }
             throw typeError("not.a.function", ScriptRuntime.safeToString(func));
         } catch (final RuntimeException | Error e) {
             throw e;
         } catch (final Throwable t) {
             throw new RuntimeException(t);
         }
     }
     // -- Internals below this point
     private static double parseDateString(final String str) {
         final DateParser parser = new DateParser(str);
         if (parser.parse()) {
             final Integer[] fields = parser.getDateFields();
             double d = makeDate(fields);
             if (fields[DateParser.TIMEZONE] != null) {
                 d -= fields[DateParser.TIMEZONE] * 60000;
             } else {
                 d = utc(d, Global.getEnv()._timezone);
             }
             d = timeClip(d);
             return d;
         }
         return Double.NaN;
     }
     private static void zeroPad(final StringBuilder sb, final int n, final int length) {
         for (int l = 1, d = 10; l < length; l++, d *= 10) {
             if (n < d) {
                 sb.append('0');
             }
         }
         sb.append(n);
     }
     @SuppressWarnings("fallthrough")
     private static String toStringImpl(final Object self, final int format) {
         final NativeDate nd = getNativeDate(self);
         if (nd != null && nd.isValidDate()) {
             final StringBuilder sb = new StringBuilder(40);
             final double t = nd.getLocalTime();
             switch (format) {
                 case FORMAT_DATE_TIME:
                 case FORMAT_DATE :
                 case FORMAT_LOCAL_DATE_TIME:
                     // EEE MMM dd yyyy
                     sb.append(weekDays[weekDay(t)])
                             .append(' ')
                             .append(months[monthFromTime(t)])
                             .append(' ');
                     zeroPad(sb, dayFromTime(t), 2);
                     sb.append(' ');
                     zeroPad(sb, yearFromTime(t), 4);
                     if (format == FORMAT_DATE) {
                         break;
                     }
                     sb.append(' ');
                 case FORMAT_TIME:
                     final TimeZone tz = nd.getTimeZone();
                     final double utcTime = nd.getTime();
                     int offset = tz.getOffset((long) utcTime) / 60000;
                     final boolean inDaylightTime = offset != tz.getRawOffset() / 60000;
                     // Convert minutes to HHmm timezone offset
                     offset = (offset / 60) * 100 + offset % 60;
                     // HH:mm:ss GMT+HHmm
                     zeroPad(sb, hourFromTime(t), 2);
                     sb.append(':');
                     zeroPad(sb, minFromTime(t), 2);
                     sb.append(':');
                     zeroPad(sb, secFromTime(t), 2);
                     sb.append(" GMT")
                             .append(offset < 0 ? '-' : '+');
                     zeroPad(sb, Math.abs(offset), 4);
                     sb.append(" (")
                             .append(tz.getDisplayName(inDaylightTime, TimeZone.SHORT, Locale.US))
                             .append(')');
                     break;
                 case FORMAT_LOCAL_DATE:
                     // yyyy-MM-dd
                     zeroPad(sb, yearFromTime(t), 4);
                     sb.append('-');
                     zeroPad(sb, monthFromTime(t) + 1, 2);
                     sb.append('-');
                     zeroPad(sb, dayFromTime(t), 2);
                     break;
                 case FORMAT_LOCAL_TIME:
                     // HH:mm:ss
                     zeroPad(sb, hourFromTime(t), 2);
                     sb.append(':');
                     zeroPad(sb, minFromTime(t), 2);
                     sb.append(':');
                     zeroPad(sb, secFromTime(t), 2);
                     break;
                 default:
                     throw new IllegalArgumentException("format: " + format);
             }
             return sb.toString();
         }
         return INVALID_DATE;
     }
     private static String toGMTStringImpl(final Object self) {
         final NativeDate nd = getNativeDate(self);
         if (nd != null && nd.isValidDate()) {
             final StringBuilder sb = new StringBuilder(29);
             final double t = nd.getTime();
             // EEE, dd MMM yyyy HH:mm:ss z
             sb.append(weekDays[weekDay(t)])
                     .append(", ");
             zeroPad(sb, dayFromTime(t), 2);
             sb.append(' ')
                     .append(months[monthFromTime(t)])
                     .append(' ');
             zeroPad(sb, yearFromTime(t), 4);
             sb.append(' ');
             zeroPad(sb, hourFromTime(t), 2);
             sb.append(':');
             zeroPad(sb, minFromTime(t), 2);
             sb.append(':');
             zeroPad(sb, secFromTime(t), 2);
             sb.append(" GMT");
             return sb.toString();
         }
         throw rangeError("invalid.date");
     }
     private static String toISOStringImpl(final Object self) {
         final NativeDate nd = getNativeDate(self);
         if (nd != null && nd.isValidDate()) {
             final StringBuilder sb = new StringBuilder(24);
             final double t = nd.getTime();
             // yyyy-MM-dd'T'HH:mm:ss.SSS'Z'
             zeroPad(sb, yearFromTime(t), 4);
             sb.append('-');
             zeroPad(sb, monthFromTime(t) + 1, 2);
             sb.append('-');
             zeroPad(sb, dayFromTime(t), 2);
             sb.append('T');
             zeroPad(sb, hourFromTime(t), 2);
             sb.append(':');
             zeroPad(sb, minFromTime(t), 2);
             sb.append(':');
             zeroPad(sb, secFromTime(t), 2);
             sb.append('.');
             zeroPad(sb, msFromTime(t), 3);
             sb.append("Z");
             return sb.toString();
         }
         throw rangeError("invalid.date");
     }
     // ECMA 15.9.1.2 Day (t)
     private static double day(final double t) {
         return Math.floor(t / msPerDay);
     }
     // ECMA 15.9.1.2 TimeWithinDay (t)
     private static double timeWithinDay(final double t) {
         final double val = t % msPerDay;
         return val < 0? val + msPerDay : val;
     }
     // ECMA 15.9.1.3 InLeapYear (t)
     private static boolean isLeapYear(final int y) {
         return y % 4 == 0 && (y % 100 != 0 || y % 400 == 0);
     }
     // ECMA 15.9.1.3 DaysInYear (y)
     private static int daysInYear(final int y) {
         return isLeapYear(y) ? 366 : 365;
     }
     // ECMA 15.9.1.3 DayFromYear (y)
     private static double dayFromYear(final double y) {
         return 365 * (y - 1970)
                 + Math.floor((y -1969) / 4.0)
                 - Math.floor((y - 1901) / 100.0)
                 + Math.floor((y - 1601) / 400.0);
     }
     // ECMA 15.9.1.3 Year Number
     private static double timeFromYear(final int y) {
         return dayFromYear(y) * msPerDay;
     }
     // ECMA 15.9.1.3 Year Number
     private static int yearFromTime(final double t) {
         int y = (int) Math.floor(t / (msPerDay * 365.2425)) + 1970;
         final double t2 = timeFromYear(y);
         if (t2 > t) {
             y--;
         } else if (t2 + msPerDay * daysInYear(y) <= t) {
             y++;
         }
         return y;
     }
     private static int dayWithinYear(final double t, final int year) {
         return (int) (day(t) - dayFromYear(year));
     }
     private static int monthFromTime(final double t) {
         final int year = yearFromTime(t);
         final int day = dayWithinYear(t, year);
         final int[] firstDay = firstDayInMonth[isLeapYear(year) ? 1 : 0];
         int month = 0;
         while (month < 11 && firstDay[month + 1] <= day) {
             month++;
         }
         return month;
     }
     private static int dayFromTime(final double t)  {
         final int year = yearFromTime(t);
         final int day = dayWithinYear(t, year);
         final int[] firstDay = firstDayInMonth[isLeapYear(year) ? 1 : 0];
         int month = 0;
         while (month < 11 && firstDay[month + 1] <= day) {
             month++;
         }
         return 1 + day - firstDay[month];
     }
     private static int dayFromMonth(final int month, final int year) {
         assert(month >= 0 && month <= 11);
         final int[] firstDay = firstDayInMonth[isLeapYear(year) ? 1 : 0];
         return firstDay[month];
     }
     private static int weekDay(final double time) {
         final int day = (int) (day(time) + 4) % 7;
         return day < 0 ? day + 7 : day;
     }
     // ECMA 15.9.1.9 LocalTime
     private static double localTime(final double time, final TimeZone tz) {
         return time + tz.getOffset((long) time);
     }
     // ECMA 15.9.1.9 UTC
     private static double utc(final double time, final TimeZone tz) {
         return time - tz.getOffset((long) (time - tz.getRawOffset()));
     }
     // ECMA 15.9.1.10 Hours, Minutes, Second, and Milliseconds
     private static int hourFromTime(final double t) {
         final int h = (int) (Math.floor(t / msPerHour) % hoursPerDay);
         return h < 0 ? h + hoursPerDay: h;
     }
     private static int minFromTime(final double t) {
         final int m = (int) (Math.floor(t / msPerMinute) % minutesPerHour);
         return m < 0 ? m + minutesPerHour : m;
     }
     private static int secFromTime(final double t) {
         final int s = (int) (Math.floor(t / msPerSecond) % secondsPerMinute);
         return s < 0 ? s + secondsPerMinute : s;
     }
     private static int msFromTime(final double t) {
         final int m = (int) (t % msPerSecond);
         return m < 0 ? m + msPerSecond : m;
     }
     private static int valueFromTime(final int unit, final double t) {
         switch (unit) {
             case YEAR: return yearFromTime(t);
             case MONTH: return monthFromTime(t);
             case DAY: return dayFromTime(t);
             case HOUR: return hourFromTime(t);
             case MINUTE: return minFromTime(t);
             case SECOND: return secFromTime(t);
             case MILLISECOND: return msFromTime(t);
             default: throw new IllegalArgumentException(Integer.toString(unit));
         }
     }
     // ECMA 15.9.1.11 MakeTime (hour, min, sec, ms)
     private static double makeTime(final double hour, final double min, final double sec, final double ms) {
         return hour * 3600000 + min * 60000 + sec * 1000 + ms;
     }
     // ECMA 15.9.1.12 MakeDay (year, month, date)
     private static double makeDay(final double year, final double month, final double date) {
         final double y = year + Math.floor(month / 12);
         int m = (int) (month % 12);
         if (m < 0) {
             m += 12;
         }
         double d = dayFromYear(y);
         d += dayFromMonth(m, (int) y);
         return d + date - 1;
     }
     // ECMA 15.9.1.13 MakeDate (day, time)
     private static double makeDate(final double day, final double time) {
         return day * msPerDay + time;
     }
     private static double makeDate(final Integer[] d) {
         final double time = makeDay(d[0], d[1], d[2]) * msPerDay;
         return time + makeTime(d[3], d[4], d[5], d[6]);
     }
     private static double makeDate(final double[] d) {
         final double time = makeDay(d[0], d[1], d[2]) * msPerDay;
         return time + makeTime(d[3], d[4], d[5], d[6]);
     }
     // Convert Date constructor args, checking for NaN, filling in defaults etc.
     private static double[] convertCtorArgs(final Object[] args) {
         final double[] d = new double[7];
         boolean nullReturn = false;
         // should not bailout on first NaN or infinite. Need to convert all
         // subsequent args for possible side-effects via valueOf/toString overrides
         // on argument objects.
         for (int i = 0; i < d.length; i++) {
             if (i < args.length) {
                 final double darg = JSType.toNumber(args[i]);
                 if (isNaN(darg) || isInfinite(darg)) {
                     nullReturn = true;
                 }
                 d[i] = (long)darg;
             } else {
                 d[i] = i == 2 ? 1 : 0; // day in month defaults to 1
             }
         }
         if (0 <= d[0] && d[0] <= 99) {
             d[0] += 1900;
         }
         return nullReturn? null : d;
     }
     // This method does the hard work for all setter methods: If a value is provided
     // as argument it is used, otherwise the value is calculated from the existing time value.
     private static double[] convertArgs(final Object[] args, final double time, final int fieldId, final int start, final int length) {
         final double[] d = new double[length];
         boolean nullReturn = false;
         // Need to call toNumber on all args for side-effects - even if an argument
         // fails to convert to number, subsequent toNumber calls needed for possible
         // side-effects via valueOf/toString overrides.
         for (int i = start; i < start + length; i++) {
             if (fieldId <= i && i < fieldId + args.length) {
                 final double darg = JSType.toNumber(args[i - fieldId]);
                 if (isNaN(darg) || isInfinite(darg)) {
                     nullReturn = true;
                 }
                 d[i - start] = (long) darg;
             } else {
                 // Date.prototype.set* methods require first argument to be defined
                 if (i == fieldId) {
                     nullReturn = true;
                 }
                 if (!nullReturn && !isNaN(time)) {
                     d[i - start] = valueFromTime(i, time);
                 }
             }
         }
         return nullReturn ? null : d;
     }
     // ECMA 15.9.1.14 TimeClip (time)
     private static double timeClip(final double time) {
         if (isInfinite(time) || isNaN(time) || Math.abs(time) > 8.64e15) {
             return Double.NaN;
         }
         return (long)time;
     }
     private static NativeDate ensureNativeDate(final Object self) {
         return getNativeDate(self);
     }
     private static NativeDate getNativeDate(final Object self) {
         if (self instanceof NativeDate) {
             return (NativeDate)self;
         } else if (self != null && self == Global.instance().getDatePrototype()) {
             return Global.instance().getDefaultDate();
         } else {
             throw typeError("not.a.date", ScriptRuntime.safeToString(self));
         }
     }
     private static double getField(final Object self, final int field) {
         final NativeDate nd = getNativeDate(self);
         return (nd != null && nd.isValidDate()) ? (double)valueFromTime(field, nd.getLocalTime()) : Double.NaN;
     }
     private static double getUTCField(final Object self, final int field) {
         final NativeDate nd = getNativeDate(self);
         return (nd != null && nd.isValidDate()) ? (double)valueFromTime(field, nd.getTime()) : Double.NaN;
     }
     private static void setFields(final NativeDate nd, final int fieldId, final Object[] args, final boolean local) {
         int start, length;
         if (fieldId < HOUR) {
             start = YEAR;
             length = 3;
         } else {
             start = HOUR;
             length = 4;
         }
         final double time = local ? nd.getLocalTime() : nd.getTime();
         final double d[] = convertArgs(args, time, fieldId, start, length);
         if (! nd.isValidDate()) {
             return;
         }
         double newTime;
         if (d == null) {
             newTime = NaN;
         } else {
             if (start == YEAR) {
                 newTime = makeDate(makeDay(d[0], d[1], d[2]), timeWithinDay(time));
             } else {
                 newTime = makeDate(day(time), makeTime(d[0], d[1], d[2], d[3]));
             }
             if (local) {
                 newTime = utc(newTime, nd.getTimeZone());
             }
             newTime = timeClip(newTime);
         }
         nd.setTime(newTime);
     }
     private boolean isValidDate() {
         return !isNaN(time);
     }
     private double getLocalTime() {
         return localTime(time, timezone);
     }
     private double getTime() {
         return time;
     }
     private void setTime(final double time) {
         this.time = time;
     }
     private TimeZone getTimeZone() {
         return timezone;
     }
 }

Mercurial > jdk8-mips64-public > nashorn / annotate

src/jdk/nashorn/internal/objects/NativeDate.java@e597c5975dac (annotated)

src/jdk/nashorn/internal/objects/NativeDate.java