/// <summary>
/// Returns if this rule represents the same rule and offsets as another.
/// When two <c>TimeZoneRule</c> objects differ only its names, this
/// method returns true.
/// </summary>
///
/// <param name="other">The <c>TimeZoneRule</c> object to be compared with.</param>
/// <returns>true if the other <c>TimeZoneRule</c> is the same as this
/// one.</returns>
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public virtual bool IsEquivalentTo(TimeZoneRule other)
{
if (rawOffset == other.rawOffset && dstSavings == other.dstSavings)
{
return(true);
}
return(false);
}
/// <summary>
///
/// </summary>
///
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public override bool IsEquivalentTo(TimeZoneRule other)
{
if (other is InitialTimeZoneRule)
{
return(base.IsEquivalentTo(other));
}
return(false);
}
/// <summary>
///
/// </summary>
///
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public override bool IsEquivalentTo(TimeZoneRule other)
{
if (!(other is TimeArrayTimeZoneRule))
{
return(false);
}
if (timeType == ((TimeArrayTimeZoneRule)other).timeType &&
ILOG.J2CsMapping.Collections.Arrays.Equals(startTimes, ((TimeArrayTimeZoneRule)other).startTimes))
{
return(base.IsEquivalentTo(other));
}
return(false);
}
/// <summary>
///
/// </summary>
///
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public override bool IsEquivalentTo(TimeZoneRule other)
{
if (!(other is AnnualTimeZoneRule))
{
return(false);
}
AnnualTimeZoneRule otherRule = (AnnualTimeZoneRule)other;
if (startYear == otherRule.startYear && endYear == otherRule.endYear &&
dateTimeRule.Equals(otherRule.dateTimeRule))
{
return(base.IsEquivalentTo(other));
}
return(false);
}
// BasicTimeZone methods
/// <summary>
///
/// </summary>
///
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public override TimeZoneRule[] GetTimeZoneRules()
{
int size = 1;
if (historicRules != null)
{
size += historicRules.Count;
}
if (finalRules != null)
{
if (finalRules[1] != null)
{
size += 2;
}
else
{
size++;
}
}
TimeZoneRule[] rules = new TimeZoneRule[size];
rules[0] = initialRule;
int idx = 1;
if (historicRules != null)
{
for (; idx < historicRules.Count + 1; idx++)
{
rules[idx] = (TimeZoneRule)historicRules[idx - 1];
}
}
if (finalRules != null)
{
rules[idx++] = finalRules[0];
if (finalRules[1] != null)
{
rules[idx] = finalRules[1];
}
}
return(rules);
}
/// <summary>
/// Adds the <c>TimeZoneRule</c> which represents time transitions. The
/// <c>TimeZoneRule</c> must have start times, that is, the result of<see cref="M:IBM.ICU.Util.TimeZoneRule.IsTransitionRule"/> must be true.
/// Otherwise, <c>IllegalArgumentException</c> is thrown.
/// </summary>
///
/// <param name="rule">The <c>TimeZoneRule</c>.</param>
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public void AddTransitionRule(TimeZoneRule rule)
{
if (!rule.IsTransitionRule())
{
throw new ArgumentException("Rule must be a transition rule");
}
if (rule is AnnualTimeZoneRule &&
((AnnualTimeZoneRule)rule).GetEndYear() == IBM.ICU.Util.AnnualTimeZoneRule.MAX_YEAR)
{
// One of the final rules applicable in future forever
if (finalRules == null)
{
finalRules = new AnnualTimeZoneRule[2];
finalRules[0] = (AnnualTimeZoneRule)rule;
}
else if (finalRules[1] == null)
{
finalRules[1] = (AnnualTimeZoneRule)rule;
}
else
{
// Only a pair of AnnualTimeZoneRule is allowed.
throw new InvalidOperationException("Too many final rules");
}
}
else
{
// If this is not a final rule, add it to the historic rule list
if (historicRules == null)
{
historicRules = new ArrayList();
}
ILOG.J2CsMapping.Collections.Generics.Collections.Add(historicRules, rule);
}
// Mark dirty, so transitions are recalculated when offset information
// is
// accessed next time.
upToDate = false;
}
/// <summary>
/// Constructs a <c>TimeZoneTransition</c> with the time and the rules
/// before/after the transition.
/// </summary>
///
/// <param name="time_0">The time of transition in milliseconds since the base time.</param>
/// <param name="from_1">The time zone rule used before the transition.</param>
/// <param name="to_2">The time zone rule used after the transition.</param>
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public TimeZoneTransition(long time_0, TimeZoneRule from_1, TimeZoneRule to_2)
{
this.time = time_0;
this.from = from_1;
this.to = to_2;
}
/// <summary>
/// Gets the array of <c>TimeZoneRule</c> which represents the rule of
/// this time zone object near the specified date. Some applications are not
/// capable to handle historic time zone rule changes. Also some applications
/// can only handle certain type of rule definitions. This method returns
/// either a single <c>InitialTimeZoneRule</c> if this time zone does
/// not have any daylight saving time within 1 year from the specified time,
/// or a pair of <c>AnnualTimeZoneRule</c> whose rule type is
/// <c>DateTimeRule.DOW</c> for date and
/// <c>DateTimeRule.WALL_TIME</c> for time with a single
/// <c>InitialTimeZoneRule</c> representing the initial time, when this
/// time zone observes daylight saving time near the specified date. Thus,
/// the result may be only valid for dates around the specified date.
/// </summary>
///
/// <param name="date">The date to be used for <c>TimeZoneRule</c> extraction.</param>
/// <returns>The array of <c>TimeZoneRule</c>, either a single
/// <c>InitialTimeZoneRule</c> object, or a pair of
/// <c>AnnualTimeZoneRule</c> with a single
/// <c>InitialTimeZoneRule</c>. The first element in the array
/// is always a <c>InitialTimeZoneRule</c>.</returns>
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public TimeZoneRule[] GetSimpleTimeZoneRulesNear(long date)
{
AnnualTimeZoneRule[] annualRules = null;
TimeZoneRule initialRule = null;
// Get the next transition
TimeZoneTransition tr = GetNextTransition(date, false);
if (tr != null)
{
String initialName = tr.GetFrom().GetName();
int initialRaw = tr.GetFrom().GetRawOffset();
int initialDst = tr.GetFrom().GetDSTSavings();
// Check if the next transition is either DST->STD or STD->DST and
// within roughly 1 year from the specified date
long nextTransitionTime = tr.GetTime();
if (((tr.GetFrom().GetDSTSavings() == 0 && tr.GetTo()
.GetDSTSavings() != 0) || (tr.GetFrom().GetDSTSavings() != 0 && tr
.GetTo().GetDSTSavings() == 0)) &&
date + MILLIS_PER_YEAR > nextTransitionTime)
{
// Get the next next transition
annualRules = new AnnualTimeZoneRule[2];
int[] dtfields = IBM.ICU.Impl.Grego.TimeToFields(
nextTransitionTime + tr.GetFrom().GetRawOffset()
+ tr.GetFrom().GetDSTSavings(), null);
int weekInMonth = IBM.ICU.Impl.Grego.GetDayOfWeekInMonth(dtfields[0],
dtfields[1], dtfields[2]);
// Create DOW rule
DateTimeRule dtr = new DateTimeRule(dtfields[1], weekInMonth,
dtfields[3], dtfields[5], IBM.ICU.Util.DateTimeRule.WALL_TIME);
annualRules[0] = new AnnualTimeZoneRule(tr.GetTo().GetName(),
tr.GetTo().GetRawOffset(), tr.GetTo().GetDSTSavings(),
dtr, dtfields[0], IBM.ICU.Util.AnnualTimeZoneRule.MAX_YEAR);
tr = GetNextTransition(nextTransitionTime, false);
AnnualTimeZoneRule secondRule = null;
if (tr != null)
{
// Check if the next next transition is either DST->STD or
// STD->DST
// and within roughly 1 year from the next transition
if (((tr.GetFrom().GetDSTSavings() == 0 && tr.GetTo()
.GetDSTSavings() != 0) || (tr.GetFrom()
.GetDSTSavings() != 0 && tr.GetTo().GetDSTSavings() == 0)) &&
nextTransitionTime + MILLIS_PER_YEAR > tr
.GetTime())
{
// Generate another DOW rule
dtfields = IBM.ICU.Impl.Grego.TimeToFields(tr.GetTime()
+ tr.GetFrom().GetRawOffset()
+ tr.GetFrom().GetDSTSavings(), dtfields);
weekInMonth = IBM.ICU.Impl.Grego.GetDayOfWeekInMonth(dtfields[0],
dtfields[1], dtfields[2]);
dtr = new DateTimeRule(dtfields[1], weekInMonth,
dtfields[3], dtfields[5],
IBM.ICU.Util.DateTimeRule.WALL_TIME);
secondRule = new AnnualTimeZoneRule(tr.GetTo()
.GetName(), tr.GetTo().GetRawOffset(), tr
.GetTo().GetDSTSavings(), dtr, dtfields[0] - 1,
IBM.ICU.Util.AnnualTimeZoneRule.MAX_YEAR);
// Make sure this rule can be applied to the specified
// date
DateTime d = secondRule.GetPreviousStart(date, tr.GetFrom()
.GetRawOffset(), tr.GetFrom().GetDSTSavings(),
true);
if (d != null && (d.Ticks / 10000) <= date &&
initialRaw == tr.GetTo().GetRawOffset() &&
initialDst == tr.GetTo().GetDSTSavings())
{
// We can use this rule as the second transition
// rule
annualRules[1] = secondRule;
}
}
}
if (annualRules[1] == null)
{
// Try previous transition
tr = GetPreviousTransition(date, true);
if (tr != null)
{
// Check if the previous transition is either DST->STD
// or STD->DST.
// The actual transition time does not matter here.
if ((tr.GetFrom().GetDSTSavings() == 0 && tr.GetTo()
.GetDSTSavings() != 0) ||
(tr.GetFrom().GetDSTSavings() != 0 && tr
.GetTo().GetDSTSavings() == 0))
{
// Generate another DOW rule
dtfields = IBM.ICU.Impl.Grego.TimeToFields(tr.GetTime()
+ tr.GetFrom().GetRawOffset()
+ tr.GetFrom().GetDSTSavings(), dtfields);
weekInMonth = IBM.ICU.Impl.Grego.GetDayOfWeekInMonth(
dtfields[0], dtfields[1], dtfields[2]);
dtr = new DateTimeRule(dtfields[1], weekInMonth,
dtfields[3], dtfields[5],
IBM.ICU.Util.DateTimeRule.WALL_TIME);
secondRule = new AnnualTimeZoneRule(tr.GetTo()
.GetName(), tr.GetTo().GetRawOffset(), tr
.GetTo().GetDSTSavings(), dtr,
annualRules[0].GetStartYear() - 1,
IBM.ICU.Util.AnnualTimeZoneRule.MAX_YEAR);
// Check if this rule start after the first rule
// after the specified date
DateTime d_0 = secondRule.GetNextStart(date, tr.GetFrom()
.GetRawOffset(), tr.GetFrom()
.GetDSTSavings(), false);
if ((d_0.Ticks / 10000) > nextTransitionTime)
{
// We can use this rule as the second transition
// rule
annualRules[1] = secondRule;
}
}
}
}
if (annualRules[1] == null)
{
// Cannot generate a good pair of AnnualTimeZoneRule
annualRules = null;
}
else
{
// The initial rule should represent the rule before the
// previous transition
initialName = annualRules[0].GetName();
initialRaw = annualRules[0].GetRawOffset();
initialDst = annualRules[0].GetDSTSavings();
}
}
initialRule = new InitialTimeZoneRule(initialName, initialRaw,
initialDst);
}
else
{
// Try the previous one
tr = GetPreviousTransition(date, true);
if (tr != null)
{
initialRule = new InitialTimeZoneRule(tr.GetTo().GetName(), tr
.GetTo().GetRawOffset(), tr.GetTo().GetDSTSavings());
}
else
{
// No transitions in the past. Just use the current offsets
int[] offsets = new int[2];
GetOffset(date, false, offsets);
initialRule = new InitialTimeZoneRule(GetID(), offsets[0],
offsets[1]);
}
}
TimeZoneRule[] result = null;
if (annualRules == null)
{
result = new TimeZoneRule[1];
result[0] = initialRule;
}
else
{
result = new TimeZoneRule[3];
result[0] = initialRule;
result[1] = annualRules[0];
result[2] = annualRules[1];
}
return(result);
}
/// <summary>
/// Gets the array of <c>TimeZoneRule</c> which represents the rule of
/// this time zone object since the specified start time. The first element
/// in the result array will be the <c>InitialTimeZoneRule</c> instance
/// for the initial rule. The rest will be either
/// <c>AnnualTimeZoneRule</c> or <c>TimeArrayTimeZoneRule</c>
/// instances representing transitions.
/// </summary>
///
/// <param name="start">The start time (inclusive).</param>
/// <returns>The array of <c>TimeZoneRule</c> which represents this time
/// zone since the start time.</returns>
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public virtual TimeZoneRule[] GetTimeZoneRules(long start)
{
TimeZoneRule[] all = GetTimeZoneRules();
TimeZoneTransition tzt = GetPreviousTransition(start, true);
if (tzt == null)
{
// No need to filter out rules only applicable to time before the
// start
return(all);
}
BitSet isProcessed = new BitSet(all.Length);
IList filteredRules = new LinkedList();
// Create initial rule
TimeZoneRule initial = new InitialTimeZoneRule(tzt.GetTo().GetName(),
tzt.GetTo().GetRawOffset(), tzt.GetTo().GetDSTSavings());
ILOG.J2CsMapping.Collections.Generics.Collections.Add(filteredRules, initial);
isProcessed.Set(0);
// Mark rules which does not need to be processed
for (int i = 1; i < all.Length; i++)
{
DateTime d = all[i].GetNextStart(start, initial.GetRawOffset(),
initial.GetDSTSavings(), false);
if (d == null)
{
isProcessed.Set(i);
}
}
long time = start;
bool bFinalStd = false, bFinalDst = false;
while (!bFinalStd || !bFinalDst)
{
tzt = GetNextTransition(time, false);
if (tzt == null)
{
break;
}
time = tzt.GetTime();
TimeZoneRule toRule = tzt.GetTo();
int ruleIdx = 1;
for (; ruleIdx < all.Length; ruleIdx++)
{
if (all[ruleIdx].Equals(toRule))
{
break;
}
}
if (ruleIdx >= all.Length)
{
throw new InvalidOperationException("The rule was not found");
}
if (isProcessed.Get(ruleIdx))
{
continue;
}
if (toRule is TimeArrayTimeZoneRule)
{
TimeArrayTimeZoneRule tar = (TimeArrayTimeZoneRule)toRule;
// Get the previous raw offset and DST savings before the very
// first start time
long t = start;
while (true)
{
tzt = GetNextTransition(t, false);
if (tzt == null)
{
break;
}
if (tzt.GetTo().Equals(tar))
{
break;
}
t = tzt.GetTime();
}
if (tzt != null)
{
// Check if the entire start times to be added
DateTime firstStart = tar.GetFirstStart(tzt.GetFrom()
.GetRawOffset(), tzt.GetFrom().GetDSTSavings());
if ((firstStart.Ticks / 10000) > start)
{
// Just add the rule as is
ILOG.J2CsMapping.Collections.Generics.Collections.Add(filteredRules, tar);
}
else
{
// Collect transitions after the start time
long[] times = tar.GetStartTimes();
int timeType = tar.GetTimeType();
int idx;
for (idx = 0; idx < times.Length; idx++)
{
t = times[idx];
if (timeType == IBM.ICU.Util.DateTimeRule.STANDARD_TIME)
{
t -= tzt.GetFrom().GetRawOffset();
}
if (timeType == IBM.ICU.Util.DateTimeRule.WALL_TIME)
{
t -= tzt.GetFrom().GetDSTSavings();
}
if (t > start)
{
break;
}
}
int asize = times.Length - idx;
if (asize > 0)
{
long[] newtimes = new long[asize];
System.Array.Copy((Array)(times), idx, (Array)(newtimes), 0, asize);
TimeArrayTimeZoneRule newtar = new TimeArrayTimeZoneRule(
tar.GetName(), tar.GetRawOffset(),
tar.GetDSTSavings(), newtimes,
tar.GetTimeType());
ILOG.J2CsMapping.Collections.Generics.Collections.Add(filteredRules, newtar);
}
}
}
}
else if (toRule is AnnualTimeZoneRule)
{
AnnualTimeZoneRule ar = (AnnualTimeZoneRule)toRule;
DateTime firstStart_0 = ar.GetFirstStart(
tzt.GetFrom().GetRawOffset(), tzt.GetFrom()
.GetDSTSavings());
if ((firstStart_0.Ticks / 10000) == tzt.GetTime())
{
// Just add the rule as is
ILOG.J2CsMapping.Collections.Generics.Collections.Add(filteredRules, ar);
}
else
{
// Calculate the transition year
int[] dfields = new int[6];
IBM.ICU.Impl.Grego.TimeToFields(tzt.GetTime(), dfields);
// Recreate the rule
AnnualTimeZoneRule newar = new AnnualTimeZoneRule(
ar.GetName(), ar.GetRawOffset(),
ar.GetDSTSavings(), ar.GetRule(), dfields[0],
ar.GetEndYear());
ILOG.J2CsMapping.Collections.Generics.Collections.Add(filteredRules, newar);
}
// Check if this is a final rule
if (ar.GetEndYear() == IBM.ICU.Util.AnnualTimeZoneRule.MAX_YEAR)
{
// After both final standard and dst rule are processed,
// exit this while loop.
if (ar.GetDSTSavings() == 0)
{
bFinalStd = true;
}
else
{
bFinalDst = true;
}
}
}
isProcessed.Set(ruleIdx);
}
TimeZoneRule[] rules = new TimeZoneRule[filteredRules.Count];
ILOG.J2CsMapping.Collections.Collections.ToArray(filteredRules, rules);
return(rules);
}
// private stuff
/*
* Resolve historic transition times and update fields used for offset
* calculation.
*/
private void Complete()
{
if (upToDate)
{
// No rules were added since last time.
return;
}
// Make sure either no final rules or a pair of AnnualTimeZoneRules
// are available.
if (finalRules != null && finalRules[1] == null)
{
throw new InvalidOperationException("Incomplete final rules");
}
// Create a TimezoneTransition and add to the list
if (historicRules != null || finalRules != null)
{
TimeZoneRule curRule = initialRule;
long lastTransitionTime = IBM.ICU.Impl.Grego.MIN_MILLIS;
// Build the transition array which represents historical time zone
// transitions.
if (historicRules != null)
{
BitSet done = new BitSet(historicRules.Count); // for skipping
// rules already
// processed
while (true)
{
int curStdOffset = curRule.GetRawOffset();
int curDstSavings = curRule.GetDSTSavings();
long nextTransitionTime = IBM.ICU.Impl.Grego.MAX_MILLIS;
TimeZoneRule nextRule = null;
DateTime d;
long tt;
for (int i = 0; i < historicRules.Count; i++)
{
if (done.Get(i))
{
continue;
}
TimeZoneRule r = (TimeZoneRule)historicRules[i];
d = r.GetNextStart(lastTransitionTime, curStdOffset,
curDstSavings, false);
if (d == null)
{
// No more transitions from this rule - skip this
// rule next time
done.Set(i);
}
else
{
if (r == curRule ||
(r.GetName().Equals(curRule.GetName()) &&
r.GetRawOffset() == curRule
.GetRawOffset() && r
.GetDSTSavings() == curRule
.GetDSTSavings()))
{
continue;
}
tt = (d.Ticks / 10000);
if (tt < nextTransitionTime)
{
nextTransitionTime = tt;
nextRule = r;
}
}
}
if (nextRule == null)
{
// Check if all historic rules are done
bool bDoneAll = true;
for (int j = 0; j < historicRules.Count; j++)
{
if (!done.Get(j))
{
bDoneAll = false;
break;
}
}
if (bDoneAll)
{
break;
}
}
if (finalRules != null)
{
// Check if one of final rules has earlier transition
// date
for (int i_0 = 0; i_0 < 2 /* finalRules.length */; i_0++)
{
if ((Object)finalRules[i_0] == (Object)curRule)
{
continue;
}
d = finalRules[i_0].GetNextStart(lastTransitionTime,
curStdOffset, curDstSavings, false);
if (d != null)
{
tt = (d.Ticks / 10000);
if (tt < nextTransitionTime)
{
nextTransitionTime = tt;
nextRule = finalRules[i_0];
}
}
}
}
if (nextRule == null)
{
// Nothing more
break;
}
if (historicTransitions == null)
{
historicTransitions = new ArrayList();
}
ILOG.J2CsMapping.Collections.Generics.Collections.Add(historicTransitions, new TimeZoneTransition(
nextTransitionTime, curRule, nextRule));
lastTransitionTime = nextTransitionTime;
curRule = nextRule;
}
}
if (finalRules != null)
{
if (historicTransitions == null)
{
historicTransitions = new ArrayList();
}
// Append the first transition for each
DateTime d0 = finalRules[0].GetNextStart(lastTransitionTime,
curRule.GetRawOffset(), curRule.GetDSTSavings(), false);
DateTime d1 = finalRules[1].GetNextStart(lastTransitionTime,
curRule.GetRawOffset(), curRule.GetDSTSavings(), false);
if (ILOG.J2CsMapping.Util.DateUtil.After(d1, d0))
{
ILOG.J2CsMapping.Collections.Generics.Collections.Add(historicTransitions, new TimeZoneTransition(
(d0.Ticks / 10000), curRule, finalRules[0]));
d1 = finalRules[1].GetNextStart((d0.Ticks / 10000),
finalRules[0].GetRawOffset(),
finalRules[0].GetDSTSavings(), false);
ILOG.J2CsMapping.Collections.Generics.Collections.Add(historicTransitions, new TimeZoneTransition(
(d1.Ticks / 10000), finalRules[0], finalRules[1]));
}
else
{
ILOG.J2CsMapping.Collections.Generics.Collections.Add(historicTransitions, new TimeZoneTransition(
(d1.Ticks / 10000), curRule, finalRules[1]));
d0 = finalRules[0].GetNextStart((d1.Ticks / 10000),
finalRules[1].GetRawOffset(),
finalRules[1].GetDSTSavings(), false);
ILOG.J2CsMapping.Collections.Generics.Collections.Add(historicTransitions, new TimeZoneTransition(
(d0.Ticks / 10000), finalRules[1], finalRules[0]));
}
}
}
upToDate = true;
}
/// <summary>
///
/// </summary>
///
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public override TimeZoneTransition GetPreviousTransition(long bs, bool inclusive)
{
Complete();
if (historicTransitions == null)
{
return(null);
}
TimeZoneTransition result = null;
TimeZoneTransition tzt = (TimeZoneTransition)historicTransitions[0];
long tt = tzt.GetTime();
if (inclusive && tt == bs)
{
result = tzt;
}
else if (tt >= bs)
{
return(null);
}
else
{
int idx = historicTransitions.Count - 1;
tzt = (TimeZoneTransition)historicTransitions[idx];
tt = tzt.GetTime();
if (inclusive && tt == bs)
{
result = tzt;
}
else if (tt < bs)
{
if (finalRules != null)
{
// Find a transion time with finalRules
DateTime start0 = finalRules[0].GetPreviousStart(bs,
finalRules[1].GetRawOffset(),
finalRules[1].GetDSTSavings(), inclusive);
DateTime start1 = finalRules[1].GetPreviousStart(bs,
finalRules[0].GetRawOffset(),
finalRules[0].GetDSTSavings(), inclusive);
if (ILOG.J2CsMapping.Util.DateUtil.Before(start1, start0))
{
tzt = new TimeZoneTransition((start0.Ticks / 10000),
finalRules[1], finalRules[0]);
}
else
{
tzt = new TimeZoneTransition((start1.Ticks / 10000),
finalRules[0], finalRules[1]);
}
}
result = tzt;
}
else
{
// Find a transition within the historic transitions
idx--;
while (idx >= 0)
{
tzt = (TimeZoneTransition)historicTransitions[idx];
tt = tzt.GetTime();
if (tt < bs || (inclusive && tt == bs))
{
break;
}
idx--;
}
result = tzt;
}
}
if (result != null)
{
// For now, this implementation ignore transitions with only zone
// name changes.
TimeZoneRule from = result.GetFrom();
TimeZoneRule to = result.GetTo();
if (from.GetRawOffset() == to.GetRawOffset() &&
from.GetDSTSavings() == to.GetDSTSavings())
{
// No offset changes. Try previous one
result = GetPreviousTransition(result.GetTime(), false /*
* always
* exclusive
*/);
}
}
return(result);
}
/// <summary>
///
/// </summary>
///
/// @draft ICU 3.8
/// @provisional This API might change or be removed in a future release.
public override bool HasSameRules(TimeZone other)
{
if (!(other is RuleBasedTimeZone))
{
// We cannot reasonably compare rules in different types
return(false);
}
RuleBasedTimeZone otherRBTZ = (RuleBasedTimeZone)other;
// initial rule
if (!initialRule.IsEquivalentTo(otherRBTZ.initialRule))
{
return(false);
}
// final rules
if (finalRules != null && otherRBTZ.finalRules != null)
{
for (int i = 0; i < finalRules.Length; i++)
{
if (finalRules[i] == null && otherRBTZ.finalRules[i] == null)
{
continue;
}
if (finalRules[i] != null &&
otherRBTZ.finalRules[i] != null &&
finalRules[i]
.IsEquivalentTo(otherRBTZ.finalRules[i]))
{
continue;
}
return(false);
}
}
else if (finalRules != null || otherRBTZ.finalRules != null)
{
return(false);
}
// historic rules
if (historicRules != null && otherRBTZ.historicRules != null)
{
if (historicRules.Count != otherRBTZ.historicRules.Count)
{
return(false);
}
IIterator it = new ILOG.J2CsMapping.Collections.IteratorAdapter(historicRules.GetEnumerator());
while (it.HasNext())
{
TimeZoneRule rule = (TimeZoneRule)it.Next();
IIterator oit = new ILOG.J2CsMapping.Collections.IteratorAdapter(otherRBTZ.historicRules.GetEnumerator());
bool foundSameRule = false;
while (oit.HasNext())
{
TimeZoneRule orule = (TimeZoneRule)oit.Next();
if (rule.IsEquivalentTo(orule))
{
foundSameRule = true;
break;
}
}
if (!foundSameRule)
{
return(false);
}
}
}
else if (historicRules != null || otherRBTZ.historicRules != null)
{
return(false);
}
return(true);
}