From b0335b5ac19ce2adcc80e6700d5f16f340c2ac4a Mon Sep 17 00:00:00 2001
From: Alex 'mcmonkey' Goodwin <git_commits@alexgoodwin.dev>
Date: Thu, 21 Oct 2021 06:22:20 -0700
Subject: [PATCH] InventoryTag.find_all_items

---
 .../denizen/objects/InventoryTag.java         | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/plugin/src/main/java/com/denizenscript/denizen/objects/InventoryTag.java b/plugin/src/main/java/com/denizenscript/denizen/objects/InventoryTag.java
index 76ac08070d..67e3bf95cb 100644
--- a/plugin/src/main/java/com/denizenscript/denizen/objects/InventoryTag.java
+++ b/plugin/src/main/java/com/denizenscript/denizen/objects/InventoryTag.java
@@ -1828,6 +1828,31 @@ else if (meta.hasDisplayName() && CoreUtilities.toLowerCase(meta.getDisplayName(
             return new ElementTag(-1);
         });
 
+        // <--[tag]
+        // @attribute <InventoryTag.find_all_items[<matcher>]>
+        // @returns ListTag
+        // @description
+        // Returns a list of the location of all slots that contains an item that matches the given item matcher.
+        // Returns an empty list if there's no match.
+        // Uses the system behind <@link language Advanced Script Event Matching>.
+        // -->
+        tagProcessor.registerTag(ListTag.class, "find_all_items", (attribute, object) -> {
+            if (!attribute.hasContext(1)) {
+                return null;
+            }
+            ListTag result = new ListTag();
+            String matcher = attribute.getContext(1);
+            for (int i = 0; i < object.inventory.getSize(); i++) {
+                ItemStack item = object.inventory.getItem(i);
+                if (item != null) {
+                    if (BukkitScriptEvent.tryItem(new ItemTag(item), matcher)) {
+                        result.addObject(new ElementTag(i + 1));
+                    }
+                }
+            }
+            return result;
+        });
+
         tagProcessor.registerTag(ElementTag.class, "find", (attribute, object) -> {
             Deprecations.inventoryNonMatcherTags.warn(attribute.context);
             if (attribute.startsWith("material", 2)) {