0003-Allow-use-of-TYPE_USE-annotations.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Riley Park <riley.park@meino.net>
Date: Mon, 21 Jun 2021 09:51:29 -0700
Subject: [PATCH] Allow use of TYPE_USE annotations


diff --git a/src/test/java/org/bukkit/AnnotationTest.java b/src/test/java/org/bukkit/AnnotationTest.java
index 0c7377247ad9251c9e498039511e7220370aba2d..8d14d81c078d29781591e0ce96ea80338565e42b 100644
--- a/src/test/java/org/bukkit/AnnotationTest.java
+++ b/src/test/java/org/bukkit/AnnotationTest.java
@@ -67,14 +67,40 @@ public class AnnotationTest {
                 }
 
                 if (mustBeAnnotated(Type.getReturnType(method.desc)) && !isWellAnnotated(method.invisibleAnnotations)) {
+                    // Paper start
+                    boolean warn = true;
+                    if (isWellAnnotated(method.visibleTypeAnnotations)) {
+                        warn = false;
+                    } else if (method.invisibleTypeAnnotations != null) {
+                        dance: for (final org.objectweb.asm.tree.TypeAnnotationNode invisibleTypeAnnotation : method.invisibleTypeAnnotations) {
+                            final org.objectweb.asm.TypeReference ref = new org.objectweb.asm.TypeReference(invisibleTypeAnnotation.typeRef);
+                            if (ref.getSort() == org.objectweb.asm.TypeReference.METHOD_RETURN && java.util.Arrays.binarySearch(ACCEPTED_ANNOTATIONS, invisibleTypeAnnotation.desc) >= 0) {
+                                warn = false;
+                                break dance; // cha cha real smooth
+                            }
+                        }
+                    }
+                    if (warn)
+                    // Paper end
                     warn(errors, clazz, method, "return value");
                 }
 
                 Type[] paramTypes = Type.getArgumentTypes(method.desc);
                 List<ParameterNode> parameters = method.parameters;
 
+                dancing: // Paper
                 for (int i = 0; i < paramTypes.length; i++) {
                     if (mustBeAnnotated(paramTypes[i]) && !isWellAnnotated(method.invisibleParameterAnnotations == null ? null : method.invisibleParameterAnnotations[i])) {
+                        // Paper start
+                        if (method.invisibleTypeAnnotations != null) {
+                            for (final org.objectweb.asm.tree.TypeAnnotationNode invisibleTypeAnnotation : method.invisibleTypeAnnotations) {
+                                final org.objectweb.asm.TypeReference ref = new org.objectweb.asm.TypeReference(invisibleTypeAnnotation.typeRef);
+                                if (ref.getSort() == org.objectweb.asm.TypeReference.METHOD_FORMAL_PARAMETER && ref.getTypeParameterIndex() == i && java.util.Arrays.binarySearch(ACCEPTED_ANNOTATIONS, invisibleTypeAnnotation.desc) >= 0) {
+                                    continue dancing;
+                                }
+                            }
+                        }
+                        // Paper end
                         ParameterNode paramNode = parameters == null ? null : parameters.get(i);
                         String paramName = paramNode == null ? null : paramNode.name;
 
@@ -174,7 +200,7 @@ public class AnnotationTest {
         return true;
     }
 
-    private static boolean isWellAnnotated(@Nullable List<AnnotationNode> annotations) {
+    private static boolean isWellAnnotated(@Nullable List<? extends AnnotationNode> annotations) { // Paper
         if (annotations == null) {
             return false;
         }