protected function getTree(DateTimeParseContext $context) { // prepare parse tree $regionIds = ZoneRulesProvider::getAvailableZoneIds(); $regionIdsSize = count($regionIds); $cached = $context->isCaseSensitive() ? self::$cachedPrefixTree : self::$cachedPrefixTreeCI; if ($cached == null || $cached->getKey() != $regionIdsSize) { $cached = $context->isCaseSensitive() ? self::$cachedPrefixTree : self::$cachedPrefixTreeCI; if ($cached == null || $cached->getKey() != $regionIdsSize) { $cached = new SimpleImmutableEntry($regionIdsSize, PrefixTree::newTree($regionIds, $context)); if ($context->isCaseSensitive()) { self::$cachedPrefixTree = $cached; } else { self::$cachedPrefixTreeCI = $cached; } } } return $cached->getValue(); }
protected function getTree(DateTimeParseContext $context) { if ($this->textStyle == TextStyle::NARROW()) { return parent::getTree($context); } $locale = $context->getLocale(); $isCaseSensitive = $context->isCaseSensitive(); $regionIds = ZoneRulesProvider::getAvailableZoneIds(); $regionIdsSize = $regionIds->size(); $cached = $isCaseSensitive ? self::$cachedTree : self::$cachedTreeCI; $entry = null; $tree = null; $zoneStrings = null; if (($entry = $cached->get($locale)) == null || ($entry->getKey() != $regionIdsSize || ($tree = $entry->getValue()->get()) == null)) { $tree = PrefixTree::newTree($context); $zoneStrings = TimeZoneNameUtility::getZoneStrings($locale); foreach ($zoneStrings as $names) { $zid = $names[0]; if (!$regionIds->contains($zid)) { continue; } $tree->add($zid, $zid); // don't convert zid -> metazone $zid = ZoneName::toZid($zid, $locale); $i = $this->textStyle == TextStyle::FULL() ? 1 : 2; for (; $i < count($names); $i += 2) { $tree->add($names[$i], $zid); } } // if we have a set of preferred zones, need a copy and // add the preferred zones again to overwrite if (self::$preferredZones != null) { foreach ($zoneStrings as $names) { $zid = $names[0]; if (!self::$preferredZones->contains($zid) || !$regionIds->contains($zid)) { continue; } $i = $this->textStyle == TextStyle::FULL() ? 1 : 2; for (; $i < count($names); $i += 2) { $tree->add($names[$i], $zid); } } } $cached->put($locale, new SimpleImmutableEntry($regionIdsSize, $tree)); } return $tree; }