src/game/java/net/minecraft/client/searchtree/IdSearchTree.java

package net.minecraft.client.searchtree;

import com.google.common.collect.ImmutableList;
import java.util.Comparator;
import java.util.List;
import java.util.function.Function;
import java.util.function.ToIntFunction;
import java.util.stream.Stream;
import net.minecraft.Util;
import net.minecraft.resources.ResourceLocation;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class IdSearchTree<T> implements SearchTree<T> {
    protected final Comparator<T> additionOrder;
    protected final ResourceLocationSearchTree<T> resourceLocationSearchTree;

    public IdSearchTree(Function<T, Stream<ResourceLocation>> p_235167_, List<T> p_235168_) {
        ToIntFunction<T> tointfunction = Util.createIndexLookup(p_235168_);
        this.additionOrder = Comparator.comparingInt(tointfunction);
        this.resourceLocationSearchTree = ResourceLocationSearchTree.create(p_235168_, p_235167_);
    }

    @Override
    public List<T> search(String p_235173_) {
        int i = p_235173_.indexOf(58);
        return i == -1 ? this.searchPlainText(p_235173_) : this.searchResourceLocation(p_235173_.substring(0, i).trim(), p_235173_.substring(i + 1).trim());
    }

    protected List<T> searchPlainText(String p_235169_) {
        return this.resourceLocationSearchTree.searchPath(p_235169_);
    }

    protected List<T> searchResourceLocation(String p_235170_, String p_235171_) {
        List<T> list = this.resourceLocationSearchTree.searchNamespace(p_235170_);
        List<T> list1 = this.resourceLocationSearchTree.searchPath(p_235171_);
        return ImmutableList.copyOf(new IntersectionIterator<>(list.iterator(), list1.iterator(), this.additionOrder));
    }
}