Java example source code file (NativeDate.java)
The NativeDate.java Java example source code/*
* 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
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*/
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.SpecializedConstructor;
import jdk.nashorn.internal.objects.annotations.Where;
import jdk.nashorn.internal.parser.DateParser;
import jdk.nashorn.internal.runtime.ConsString;
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 $nasgenmap$;
static PropertyMap getInitialMap() {
return $nasgenmap$;
}
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 Global global) {
this(time, global.getDatePrototype(), global.getDateMap());
}
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
*/
@SpecializedConstructor
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 (arg instanceof String || arg instanceof ConsString) {
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 Object 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 Object 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 Object now(final Object self) {
return (double)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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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 Object 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);
}
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(' ');
//$FALL-THROUGH$
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) {
return t % msPerDay;
}
// 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().DEFAULT_DATE;
} else {
throw typeError("not.a.date", ScriptRuntime.safeToString(self));
}
}
private static Object getField(final Object self, final int field) {
final NativeDate nd = getNativeDate(self);
return (nd != null && nd.isValidDate()) ? valueFromTime(field, nd.getLocalTime()) : Double.NaN;
}
private static Object getUTCField(final Object self, final int field) {
final NativeDate nd = getNativeDate(self);
return (nd != null && nd.isValidDate()) ? 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;
}
}
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