Paper/patches/api/0003-Annotation-Test-changes.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 17 Mar 2019 23:04:30 +0000
Subject: [PATCH] Annotation Test changes

- Allow use of TYPE_USE annotations
- Ignore package-private methods for nullability annotations
- Add excludes for classes which don't pass

diff --git a/src/test/java/org/bukkit/AnnotationTest.java b/src/test/java/org/bukkit/AnnotationTest.java
index 4ac3dd977e75cd8464163351d306e037ee32cb48..1a71bb8861150c1add6446aa2fad0f7035dd6873 100644
--- a/src/test/java/org/bukkit/AnnotationTest.java
+++ b/src/test/java/org/bukkit/AnnotationTest.java
@@ -40,7 +40,17 @@ public class AnnotationTest {
         "org/bukkit/util/io/Wrapper",
         "org/bukkit/plugin/java/PluginClassLoader",
         // Generic functional interface
-        "org/bukkit/util/Consumer"
+        "org/bukkit/util/Consumer",
+        // Paper start
+        // Timings history is broken in terms of nullability due to guavas Function defining that the param is NonNull
+        "co/aikar/timings/TimingHistory$2",
+        "co/aikar/timings/TimingHistory$2$1",
+        "co/aikar/timings/TimingHistory$2$1$1",
+        "co/aikar/timings/TimingHistory$2$1$2",
+        "co/aikar/timings/TimingHistory$3",
+        "co/aikar/timings/TimingHistory$4",
+        "co/aikar/timings/TimingHistoryEntry$1"
+        // Paper end
     };
 
     @Test
@@ -67,14 +77,40 @@ public class AnnotationTest {
                 }
 
                 if (mustBeAnnotated(Type.getReturnType(method.desc)) && !isWellAnnotated(method.invisibleAnnotations)) {
+                    // Paper start - Allow use of TYPE_USE annotations
+                    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 - Allow use of TYPE_USE annotations
                         ParameterNode paramNode = parameters == null ? null : parameters.get(i);
                         String paramName = paramNode == null ? null : paramNode.name;
 
@@ -91,13 +127,18 @@ public class AnnotationTest {
 
         Collections.sort(errors);
 
-        System.out.println(errors.size() + " missing annotation(s):");
+        StringBuilder builder = new StringBuilder()
+            .append("There ")
+            .append(errors.size() != 1 ? "are " : "is ")
+            .append(errors.size())
+            .append(" missing annotation")
+            .append(errors.size() != 1 ? "s:\n" : ":\n");
+
         for (String message : errors) {
-            System.out.print("\t");
-            System.out.println(message);
+            builder.append("\t").append(message).append("\n");
         }
 
-        Assert.fail("There " + errors.size() + " are missing annotation(s)");
+        Assert.fail(builder.toString());
     }
 
     private static void collectClasses(@NotNull File from, @NotNull Map<String, ClassNode> to) throws IOException {
@@ -152,7 +193,7 @@ public class AnnotationTest {
 
     private static boolean isMethodIncluded(@NotNull ClassNode clazz, @NotNull MethodNode method, @NotNull Map<String, ClassNode> allClasses) {
         // Exclude private, synthetic and deprecated methods
-        if ((method.access & (Opcodes.ACC_PRIVATE | Opcodes.ACC_SYNTHETIC | Opcodes.ACC_DEPRECATED)) != 0) {
+        if ((method.access & (Opcodes.ACC_PRIVATE | Opcodes.ACC_SYNTHETIC | Opcodes.ACC_DEPRECATED)) != 0 || (method.access & (Opcodes.ACC_PRIVATE | Opcodes.ACC_PROTECTED | Opcodes.ACC_PUBLIC)) == 0) { // Paper - ignore package-private
             return false;
         }
 
@@ -174,7 +215,7 @@ 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;
         }