@SuppressWarnings("unchecked")
private static <E extends ArrangementEntry> void doArrange(
@NotNull List<ArrangementEntryWrapper<E>> wrappers, @NotNull Context<E> context) {
if (wrappers.isEmpty()) {
return;
}
Map<E, ArrangementEntryWrapper<E>> map = ContainerUtilRt.newHashMap();
List<E> arranged = ContainerUtilRt.newArrayList();
List<E> toArrange = ContainerUtilRt.newArrayList();
for (ArrangementEntryWrapper<E> wrapper : wrappers) {
E entry = wrapper.getEntry();
map.put(wrapper.getEntry(), wrapper);
if (!entry.canBeMatched()) {
// Split entries to arrange by 'can not be matched' rules.
// See IDEA-104046 for a problem use-case example.
if (toArrange.isEmpty()) {
arranged.addAll(arrange(toArrange, context.rules, context.rulesByPriority));
}
arranged.add(entry);
toArrange.clear();
} else {
toArrange.add(entry);
}
}
if (!toArrange.isEmpty()) {
arranged.addAll(arrange(toArrange, context.rules, context.rulesByPriority));
}
context.changer.prepare(wrappers, context);
// We apply changes from the last position to the first position in order not to bother with
// offsets shifts.
for (int i = arranged.size() - 1; i >= 0; i--) {
ArrangementEntryWrapper<E> arrangedWrapper = map.get(arranged.get(i));
ArrangementEntryWrapper<E> initialWrapper = wrappers.get(i);
context.changer.replace(
arrangedWrapper, initialWrapper, i > 0 ? map.get(arranged.get(i - 1)) : null, context);
}
}
private static class Context<E extends ArrangementEntry> {
@NotNull public final List<ArrangementMoveInfo> moveInfos = ContainerUtilRt.newArrayList();
@NotNull public final Rearranger<E> rearranger;
@NotNull public final Collection<ArrangementEntryWrapper<E>> wrappers;
@NotNull public final Document document;
@NotNull public final List<? extends ArrangementMatchRule> rules;
@NotNull public final List<? extends ArrangementMatchRule> rulesByPriority;
@NotNull public final CodeStyleSettings settings;
@NotNull public final Changer changer;
private Context(
@NotNull Rearranger<E> rearranger,
@NotNull Collection<ArrangementEntryWrapper<E>> wrappers,
@NotNull Document document,
@NotNull List<? extends ArrangementMatchRule> rules,
@NotNull List<? extends ArrangementMatchRule> rulesByPriority,
@NotNull CodeStyleSettings settings,
@NotNull Changer changer) {
this.rearranger = rearranger;
this.wrappers = wrappers;
this.document = document;
this.rules = rules;
this.rulesByPriority = rulesByPriority;
this.settings = settings;
this.changer = changer;
}
public void addMoveInfo(int oldStart, int oldEnd, int newStart) {
moveInfos.add(new ArrangementMoveInfo(oldStart, oldEnd, newStart));
}
public static <T extends ArrangementEntry> Context<T> from(
@NotNull Rearranger<T> rearranger,
@NotNull Document document,
@NotNull PsiElement root,
@NotNull Collection<TextRange> ranges,
@NotNull ArrangementSettings arrangementSettings,
@NotNull CodeStyleSettings codeStyleSettings) {
Collection<T> entries = rearranger.parse(root, document, ranges, arrangementSettings);
Collection<ArrangementEntryWrapper<T>> wrappers = new ArrayList<ArrangementEntryWrapper<T>>();
ArrangementEntryWrapper<T> previous = null;
for (T entry : entries) {
ArrangementEntryWrapper<T> wrapper = new ArrangementEntryWrapper<T>(entry);
if (previous != null) {
previous.setNext(wrapper);
wrapper.setPrevious(previous);
}
wrappers.add(wrapper);
previous = wrapper;
}
Changer changer;
if (document instanceof DocumentEx) {
changer = new RangeMarkerAwareChanger<T>((DocumentEx) document);
} else {
changer = new DefaultChanger();
}
final List<? extends ArrangementMatchRule> rulesByPriority =
ArrangementUtil.getRulesSortedByPriority(arrangementSettings);
return new Context<T>(
rearranger,
wrappers,
document,
arrangementSettings.getRules(),
rulesByPriority,
codeStyleSettings,
changer);
}
}
/**
* Arranges (re-orders) given entries according to the given rules.
*
* @param entries entries to arrange
* @param rules rules to use for arrangement
* @param rulesByPriority rules sorted by priority ('public static' rule will have higher priority
* than 'public')
* @param <E> arrangement entry type
* @return arranged list of the given rules
*/
@SuppressWarnings("AssignmentToForLoopParameter")
@NotNull
public static <E extends ArrangementEntry> List<E> arrange(
@NotNull Collection<E> entries,
@NotNull List<? extends ArrangementMatchRule> rules,
@NotNull List<? extends ArrangementMatchRule> rulesByPriority) {
List<E> arranged = ContainerUtilRt.newArrayList();
Set<E> unprocessed = ContainerUtilRt.newLinkedHashSet();
List<Pair<Set<ArrangementEntry>, E>> dependent = ContainerUtilRt.newArrayList();
for (E entry : entries) {
List<? extends ArrangementEntry> dependencies = entry.getDependencies();
if (dependencies == null) {
unprocessed.add(entry);
} else {
if (dependencies.size() == 1 && dependencies.get(0) == entry.getParent()) {
// Handle a situation when the entry is configured to be at the first parent's children.
arranged.add(entry);
} else {
Set<ArrangementEntry> first = new HashSet<ArrangementEntry>(dependencies);
dependent.add(Pair.create(first, entry));
}
}
}
Set<E> matched = new HashSet<E>();
MultiMap<ArrangementMatchRule, E> elementsByRule = new MultiMap<ArrangementMatchRule, E>();
for (ArrangementMatchRule rule : rulesByPriority) {
matched.clear();
for (E entry : unprocessed) {
if (entry.canBeMatched() && rule.getMatcher().isMatched(entry)) {
elementsByRule.putValue(rule, entry);
matched.add(entry);
}
}
unprocessed.removeAll(matched);
}
for (ArrangementMatchRule rule : rules) {
if (elementsByRule.containsKey(rule)) {
final Collection<E> arrangedEntries = elementsByRule.get(rule);
// Sort by name if necessary.
if (StdArrangementTokens.Order.BY_NAME.equals(rule.getOrderType())) {
sortByName((List<E>) arrangedEntries);
}
arranged.addAll(arrangedEntries);
}
}
arranged.addAll(unprocessed);
for (int i = 0; i < arranged.size() && !dependent.isEmpty(); i++) {
E e = arranged.get(i);
for (Iterator<Pair<Set<ArrangementEntry>, E>> iterator = dependent.iterator();
iterator.hasNext(); ) {
Pair<Set<ArrangementEntry>, E> pair = iterator.next();
pair.first.remove(e);
if (pair.first.isEmpty()) {
iterator.remove();
arranged.add(i + 1, pair.second);
}
}
}
return arranged;
}