Don't computeIfAbsent so we can recursively compute stuff in future

src/main/kotlin/ru/dbotthepony/mc/otm/matter/MatterManager.kt

@@ -6,7 +6,6 @@ import com.google.gson.JsonElement
 import com.google.gson.JsonObject
 import com.google.gson.JsonParseException
 import com.mojang.blaze3d.platform.InputConstants
-import it.unimi.dsi.fastutil.objects.Reference2ObjectFunction
 import it.unimi.dsi.fastutil.objects.Reference2ObjectOpenHashMap
 import net.minecraft.ChatFormatting
 import net.minecraft.resources.ResourceLocation
@@ -114,6 +113,35 @@ object MatterManager : SimpleJsonResourceReloadListener(GsonBuilder().setPrettyP
 	private val computedEntries = Reference2ObjectOpenHashMap<Item, Entry>()
 	val computedEntriesView: Map<Item, Entry> = Collections.unmodifiableMap(computedEntries)
 
+	private fun doGetDirectInner(value: Item): Entry? {
+		val key = value.registryName ?: throw NullPointerException("$value has no registry name!")
+
+		val keyEntry = keyEntries[key]
+
+		if (keyEntry != null) {
+			return keyEntry
+		}
+
+		for (entry in tagEntries) {
+			if (entry.bound.contains(value)) {
+				return entry
+			}
+		}
+
+		return Entry.Companion
+	}
+
+	private fun getDirectInner(value: Item): Entry {
+		val result = doGetDirectInner(value)
+
+		if (result != null) {
+			computedEntries[value] = result
+			return result
+		}
+
+		return Entry.Companion
+	}
+
 	/**
 	 * Returns directly defined matter value
 	 */
@@ -128,24 +156,7 @@ object MatterManager : SimpleJsonResourceReloadListener(GsonBuilder().setPrettyP
 		}
 
 		synchronized(computedEntries) {
-			return computedEntries.computeIfAbsent(value, Reference2ObjectFunction {
+			return getDirectInner(value)
-				it as Item
-				val key = it.registryName ?: throw NullPointerException("$it has no registry name!")
-
-				val keyEntry = keyEntries[key]
-
-				if (keyEntry != null) {
-					return@Reference2ObjectFunction keyEntry
-				}
-
-				for (entry in tagEntries) {
-					if (entry.bound.contains(it)) {
-						return@Reference2ObjectFunction entry
-					}
-				}
-
-				return@Reference2ObjectFunction Entry.Companion
-			})
 		}
 	}