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Simplify path recursive removal

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Signed-off-by: TheMode <themode@outlook.fr>
This commit is contained in:
TheMode 2022-04-27 04:45:56 +02:00
parent ece91ed4a5
commit 12543acf5e
1 changed files with 20 additions and 32 deletions
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52
src/main/java/net/minestom/server/tag/TagHandlerImpl.java
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@ -57,12 +57,25 @@ final class TagHandlerImpl implements TagHandler {
TagHandlerImpl local = this;
synchronized (this) {
if (paths != null) {
if ((local = traversePathWrite(this, tagIndex, paths, present)) == null)
return;
if ((local = traversePathWrite(this, paths, present)) == null)
return; // Tried to remove an absent tag. Do nothing
}
SPMCMap entries = local.entries;
if (present) entries.put(tagIndex, valueToEntry(local, tag, value));
else entries.remove(tagIndex);
if (present) {
entries.put(tagIndex, valueToEntry(local, tag, value));
} else {
// Remove recursively
if (entries.remove(tagIndex) == null) return;
if (paths != null) {
TagHandlerImpl tmp = local;
int i = paths.length;
do {
if (!tmp.entries.isEmpty()) break;
tmp = tmp.parent;
tmp.entries.remove(paths[--i].index());
} while (i > 0);
}
}
entries.invalidate();
assert !local.entries.rehashed;
}
@ -110,13 +123,10 @@ final class TagHandlerImpl implements TagHandler {
return updatedCache().compound;
}
private static TagHandlerImpl traversePathWrite(TagHandlerImpl root, int tagIndex,
Tag.PathEntry[] paths, boolean present) {
final int length = paths.length;
private static TagHandlerImpl traversePathWrite(TagHandlerImpl root, Tag.PathEntry[] paths,
boolean present) {
TagHandlerImpl local = root;
TagHandlerImpl[] pathHandlers = new TagHandlerImpl[length];
for (int i = 0; i < length; i++) {
final Tag.PathEntry path = paths[i];
for (Tag.PathEntry path : paths) {
final int pathIndex = path.index();
final Entry<?> entry = local.entries.get(pathIndex);
if (entry instanceof PathEntry pathEntry) {
@ -134,28 +144,6 @@ final class TagHandlerImpl implements TagHandler {
}
tmp.entries.put(pathIndex, new PathEntry(path.name(), local));
}
pathHandlers[i] = local;
}
// Handle removal if the tag was present (recursively)
if (!present) {
// Remove entry
TagHandlerImpl targetHandler = pathHandlers[length - 1];
if (targetHandler.entries.remove(tagIndex) == null) return null;
// Clear empty parents
for (int i = length - 1; i >= 0; i--) {
final TagHandlerImpl handler = pathHandlers[i];
if (!handler.entries.isEmpty()) break;
final int pathIndex = paths[i].index();
if (i == 0) {
// Remove the root handler
root.entries.remove(pathIndex);
} else {
TagHandlerImpl parent = pathHandlers[i - 1];
parent.entries.remove(pathIndex);
}
}
targetHandler.entries.invalidate();
return null;
}
return local;
}