From 1b7fe4ad3cefa1b86c8a9678cf4b54704c95c301 Mon Sep 17 00:00:00 2001
From: shedaniel <daniel@shedaniel.me>
Date: Sat, 28 Dec 2019 00:38:39 +0800
Subject: trying to optimise it

---
 .../me/shedaniel/rei/impl/EntryRegistryImpl.java   | 89 +++++++++-------------
 1 file changed, 37 insertions(+), 52 deletions(-)

(limited to 'src/main/java/me/shedaniel/rei/impl/EntryRegistryImpl.java')

diff --git a/src/main/java/me/shedaniel/rei/impl/EntryRegistryImpl.java b/src/main/java/me/shedaniel/rei/impl/EntryRegistryImpl.java
index 42913d71c..b6613d79e 100644
--- a/src/main/java/me/shedaniel/rei/impl/EntryRegistryImpl.java
+++ b/src/main/java/me/shedaniel/rei/impl/EntryRegistryImpl.java
@@ -8,20 +8,14 @@ package me.shedaniel.rei.impl;
 import com.google.common.collect.Lists;
 import me.shedaniel.rei.api.EntryRegistry;
 import me.shedaniel.rei.api.EntryStack;
+import me.shedaniel.rei.api.RecipeHelper;
 import me.shedaniel.rei.api.annotations.Internal;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.DefaultedList;
 
-import it.unimi.dsi.fastutil.Hash;
-import it.unimi.dsi.fastutil.objects.ObjectOpenCustomHashSet;
-import it.unimi.dsi.fastutil.objects.ObjectSets;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.List;
-import java.util.Set;
+import javax.annotation.Nullable;
+import java.util.*;
 import java.util.concurrent.CopyOnWriteArrayList;
 
 @Deprecated
@@ -29,39 +23,37 @@ import java.util.concurrent.CopyOnWriteArrayList;
 public class EntryRegistryImpl implements EntryRegistry {
 
     private final CopyOnWriteArrayList<EntryStack> entries = Lists.newCopyOnWriteArrayList();
-    private final Set<EntryStack> entrySet = ObjectSets.synchronize(new ObjectOpenCustomHashSet<>(new Hash.Strategy<EntryStack>() {
-        @Override
-        public int hashCode(EntryStack entry) {
-            return entry == null ? 0 : entry.hashOfAll();
-        }
+    private final LinkedList<EntryStack> linkedList = Lists.newLinkedList();
 
-        @Override
-        public boolean equals(EntryStack a, EntryStack b) {
-            if (a == null || b == null) {
-                return a == b;
-            } else {
-                boolean result = a.equalsAll(b);
-                assert result == b.equalsAll(a) : "a.equalsAll(b) != b.equalsAll(a); (a = " + a + ", b = " + b + ")";
-                return result;
-            }
-        }
-    }));
+    public void distinct() {
+        TreeSet<EntryStack> set = new TreeSet<>((i, j) -> i.equalsAll(j) ? 0 : 1);
+        set.addAll(linkedList);
+        entries.clear();
+        entries.addAll(set);
+        linkedList.clear();
+    }
 
     @Override
     public List<EntryStack> getStacksList() {
-        return entries;
+        return RecipeHelper.getInstance().arePluginsLoading() && !linkedList.isEmpty() ? linkedList : entries;
     }
 
     public void reset() {
         entries.clear();
-        entrySet.clear();
+        linkedList.clear();
     }
 
     @Override
-    public ItemStack[] getAllStacksFromItem(Item item) {
-        DefaultedList<ItemStack> list = DefaultedList.of();
-        list.add(item.getStackForRender());
+    public List<ItemStack> appendStacksForItem(Item item) {
+        DefaultedList<ItemStack> list = new DefaultedLinkedList(Lists.newLinkedList(), null);
         item.appendStacks(item.getGroup(), list);
+        if (list.isEmpty()) list.add(item.getStackForRender());
+        return list;
+    }
+
+    @Override
+    public ItemStack[] getAllStacksFromItem(Item item) {
+        List<ItemStack> list = appendStacksForItem(item);
         ItemStack[] array = list.toArray(new ItemStack[0]);
         Arrays.sort(array, (a, b) -> ItemStack.areEqualIgnoreDamage(a, b) ? 0 : 1);
         return array;
@@ -71,43 +63,36 @@ public class EntryRegistryImpl implements EntryRegistry {
     @Deprecated
     public void registerEntryAfter(EntryStack afterEntry, EntryStack stack, boolean checkAlreadyContains) {
         if (stack.isEmpty()) return;
-        boolean isNew = entrySet.add(stack);
-        if (checkAlreadyContains && !isNew) {
-            return;
-        }
         if (afterEntry == null) {
-            entries.add(stack);
+            linkedList.add(stack);
         } else {
-            int last = entries.size();
-            for (int i = 0; i < entries.size(); i++)
-                if (entries.get(i).equalsAll(afterEntry))
+            int last = linkedList.size();
+            for (int i = last - 1; i >= 0; i++)
+                if (linkedList.get(i).equalsAll(afterEntry)) {
                     last = i + 1;
-            entries.add(last, stack);
+                    break;
+                }
+            linkedList.add(last, stack);
         }
     }
 
     @Override
     public void registerEntriesAfter(EntryStack afterStack, Collection<? extends EntryStack> stacks) {
-        List<EntryStack> nonDuplicates = new ArrayList<>();
-        for (EntryStack stack : stacks) {
-            if (entrySet.add(stack)) {
-                nonDuplicates.add(stack);
-            }
-        }
-        int index = entries.size();
         if (afterStack != null) {
+            int index = linkedList.size();
             for (int i = index - 1; i >= 0; i--) {
-                if (entries.get(i).equalsAll(afterStack)) {
+                if (linkedList.get(i).equalsAll(afterStack)) {
                     index = i + 1;
                     break;
                 }
             }
-        }
-        entries.addAll(index, nonDuplicates);
+            linkedList.addAll(index, stacks);
+        } else linkedList.addAll(stacks);
     }
 
-    @Override
-    public void registerEntriesAfter(EntryStack afterStack, EntryStack... stacks) {
-        registerEntriesAfter(afterStack, Arrays.asList(stacks));
+    private class DefaultedLinkedList<E> extends DefaultedList<E> {
+        public DefaultedLinkedList(List<E> delegate, @Nullable E initialElement) {
+            super(delegate, initialElement);
+        }
     }
 }
-- 
cgit