GT_Recipe: speedup

2 files changed, 46 insertions, 0 deletions

diff --git a/src/main/java/gregtech/api/util/extensions/ArrayExt.java b/src/main/java/gregtech/api/util/extensions/ArrayExt.java
index faa01cb368..9b39f74518 100644
--- a/src/main/java/gregtech/api/util/extensions/ArrayExt.java
+++ b/src/main/java/gregtech/api/util/extensions/ArrayExt.java
@@ -32,6 +32,29 @@ public class ArrayExt {
         return objects;
     }
 
+    @SuppressWarnings("ForLoopReplaceableByForEach")
+    public static <T> T[] withoutNulls(T[] array, IntFunction<T[]> arrayFactory) {
+        int count = 0;
+        for (int i = 0; i < array.length; i++) {
+            if (array[i] != null) {
+                count++;
+            }
+        }
+
+        T[] newArr = arrayFactory.apply(count);
+        if (count == 0) return newArr;
+
+        int j = 0;
+        for (int i = 0; i < array.length; i++) {
+            if (array[i] != null) {
+                newArr[j] = array[i];
+                j++;
+            }
+        }
+
+        return newArr;
+    }
+
     public static <T> T[] withoutTrailingNulls(T[] array, IntFunction<T[]> arrayFactory) {
         int firstNull = -1;
         for (int i = 0; i < array.length; i++) {
diff --git a/src/main/java/gregtech/api/util/extensions/IteratorExt.java b/src/main/java/gregtech/api/util/extensions/IteratorExt.java
new file mode 100644
index 0000000000..1a29a7b41a
--- /dev/null
+++ b/src/main/java/gregtech/api/util/extensions/IteratorExt.java
@@ -0,0 +1,23 @@
+package gregtech.api.util.extensions;
+
+import gregtech.api.objects.iterators.ArrayIterator;
+import gregtech.api.objects.iterators.MergedIterator;
+import gregtech.api.objects.iterators.NonNullIterator;
+
+import java.util.Iterator;
+
+public class IteratorExt {
+    @SafeVarargs
+    public static <T> Iterator<T> merge(Iterator<T>... iterators) {
+        return new MergedIterator<>(iterators);
+    }
+
+    public static <T> Iterator<T> withoutNulls(Iterator<T> iterator) {
+        return new NonNullIterator<>(iterator);
+    }
+
+    @SafeVarargs
+    public static <T> ArrayIterator<T> ofArray(T... items) {
+        return new ArrayIterator<>(items);
+    }
+}