@Override
public void exitNthCenturyRange(NthCenturyRangeContext ctx) {
if (ctx.exception != null) return;
Era era = (Era) stack.pop();
Integer endN = (Integer) stack.pop();
Part endPart = (Part) stack.pop();
Integer startN = (Integer) stack.pop();
Part startPart = (Part) stack.pop();
if (era == null) {
era = Date.DEFAULT_ERA;
}
int startYear = DateUtils.nthCenturyToYear(startN);
int endYear = DateUtils.nthCenturyToYear(endN);
stack.push(
startPart == null
? DateUtils.getCenturyStartDate(startYear, era)
: DateUtils.getPartialCenturyStartDate(startYear, startPart, era));
stack.push(
startPart == null
? DateUtils.getCenturyEndDate(startYear, era)
: DateUtils.getPartialCenturyEndDate(startYear, startPart, era));
stack.push(
endPart == null
? DateUtils.getCenturyStartDate(endYear, era)
: DateUtils.getPartialCenturyStartDate(endYear, endPart, era));
stack.push(
endPart == null
? DateUtils.getCenturyEndDate(endYear, era)
: DateUtils.getPartialCenturyEndDate(endYear, endPart, era));
}
@Override
public void exitPartialCentury(PartialCenturyContext ctx) {
if (ctx.exception != null) return;
Era era = (Era) stack.pop();
Integer year = (Integer) stack.pop();
Part part = (Part) stack.pop();
if (era != null) {
// If the era was explicitly specified, the start and end years
// may be calculated now.
stack.push(DateUtils.getPartialCenturyStartDate(year, part, era));
stack.push(DateUtils.getPartialCenturyEndDate(year, part, era));
} else {
// If the era was not explicitly specified, the start and end years
// can't be calculated yet. The calculation must be deferred until
// later. For example, this partial century may be the start of a hyphenated
// range, where the era will be inherited from the era of the end of
// the range; this era won't be known until farther up the parse tree,
// when both sides of the range will have been parsed.
stack.push(new DeferredPartialCenturyStartDate(year, part));
stack.push(new DeferredPartialCenturyEndDate(year, part));
}
}