1 /* 2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 8027730 27 * @summary Test visitor support for intersection types 28 * @modules java.compiler 29 * jdk.compiler 30 */ 31 32 import java.lang.annotation.Annotation; 33 import java.util.List; 34 import javax.lang.model.element.*; 35 import javax.lang.model.type.*; 36 import javax.lang.model.util.*; 37 38 public class TestIntersectionTypeVisitors { main(String... args)39 public static void main(String... args) throws Exception { 40 IntersectionType it = new TestIntersectionType(); 41 42 boolean result = it.accept(new TypeKindVisitor8Child(), null) && 43 it.accept(new SimpleTypeVisitor8Child(), null) && 44 it.accept(new SimpleTypeVisitor6Child(), null); 45 46 if (!result) 47 throw new RuntimeException(); 48 } 49 50 static class TestIntersectionType implements IntersectionType { TestIntersectionType()51 TestIntersectionType() {} 52 53 @Override getBounds()54 public List<? extends TypeMirror> getBounds() { 55 throw new UnsupportedOperationException(); 56 } 57 58 @Override accept(TypeVisitor<R,P> v, P p)59 public <R,P> R accept(TypeVisitor<R,P> v, 60 P p) { 61 return v.visitIntersection(this, p); 62 } 63 64 @Override getKind()65 public TypeKind getKind() { 66 return TypeKind.INTERSECTION; 67 } 68 69 @Override getAnnotation(Class<A> annotationType)70 public <A extends Annotation> A getAnnotation(Class<A> annotationType) { 71 throw new UnsupportedOperationException(); 72 } 73 74 @Override getAnnotationMirrors()75 public List<? extends AnnotationMirror> getAnnotationMirrors() { 76 throw new UnsupportedOperationException(); 77 } 78 79 @Override getAnnotationsByType(Class<A> annotationType)80 public <A extends Annotation> A[] getAnnotationsByType(Class<A> annotationType) { 81 throw new UnsupportedOperationException(); 82 } 83 } 84 85 static class TypeKindVisitor8Child extends TypeKindVisitor8<Boolean, Void> { TypeKindVisitor8Child()86 TypeKindVisitor8Child() { 87 super(false); 88 } 89 90 @Override visitIntersection(IntersectionType t, Void p)91 public Boolean visitIntersection(IntersectionType t, Void p) { 92 super.visitIntersection(t, p); // Make sure overridden method doesn't throw an exception 93 return true; 94 } 95 } 96 97 static class SimpleTypeVisitor8Child extends SimpleTypeVisitor8<Boolean, Void> { SimpleTypeVisitor8Child()98 SimpleTypeVisitor8Child() { 99 super(false); 100 } 101 102 @Override visitIntersection(IntersectionType t, Void p)103 public Boolean visitIntersection(IntersectionType t, Void p) { 104 super.visitIntersection(t, p); // Make sure overridden method doesn't throw an exception 105 return true; 106 } 107 } 108 109 static class SimpleTypeVisitor6Child extends SimpleTypeVisitor6<Boolean, Void> { SimpleTypeVisitor6Child()110 SimpleTypeVisitor6Child() { 111 super(false); 112 } 113 114 @Override visitIntersection(IntersectionType t, Void p)115 public Boolean visitIntersection(IntersectionType t, Void p) { 116 try { 117 super.visitIntersection(t, p); 118 return false; 119 } catch (UnknownTypeException ute) { 120 return true; // Expected 121 } 122 } 123 } 124 } 125