1 /*
2 * Copyright (c) 2017, 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 8172910
27 * @summary Test behavior of default methods on visitors.
28 * @modules java.compiler
29 */
30
31 import javax.lang.model.SourceVersion;
32 import javax.lang.model.element.*;
33 import javax.lang.model.type.*;
34 import javax.lang.model.util.*;
35
36 /**
37 * Verify expected behavior of default methods on visitors.
38 */
39 public class TestVisitorDefaults {
40 public static void main(String... args) {
41 DirectElementVisitorChild dvc = new DirectElementVisitorChild();
42 if (!"visitUnknown".equals(dvc.visitModule(null, null))) {
43 throw new RuntimeException("Problem with DirectElementVisitorChild");
44 }
45 if (!"visit".equals(dvc.visit(null))) {
46 throw new RuntimeException("Problem with DirectElementVisitorChild");
47 }
48
49 IndirectElementVisitorChild ivc = new IndirectElementVisitorChild();
50 if (!"visitUnknown".equals(ivc.visitModule(null, null))) {
51 throw new RuntimeException("Problem with IndirectElementVisitorChild");
52 }
53
54 DirectTypeVisitorChild dtvc = new DirectTypeVisitorChild();
55 if (!"visit".equals(dtvc.visit(null))) {
56 throw new RuntimeException("Problem with DirectTypeVisitorChild");
57 }
58
59 DirectAnnotationVisitorChild davc = new DirectAnnotationVisitorChild();
60 if (!"visit".equals(davc.visit(null))) {
61 throw new RuntimeException("Problem with DirectAnnotationVisitorChild");
62 }
63 }
64
65 private static class DirectElementVisitorChild
66 implements ElementVisitor<String, Object> {
67
68 public DirectElementVisitorChild() {
69 super();
70 }
71
72 @Override
73 public String visitModule(ModuleElement e, Object o) {
74 return ElementVisitor.super.visitModule(e, null);
75 }
76
77 @Override
78 public String visitUnknown(Element e, Object o) {
79 return "visitUnknown";
80 }
81
82 @Override
83 public String visit(Element e) {
84 return ElementVisitor.super.visit(e);
85 }
86
87 @Override
88 public String visit(Element e, Object o) {
89 return "visit";
90 }
91
92 @Override
93 public String visitExecutable(ExecutableElement e, Object o) { return throwUOE(); }
94 @Override
95 public String visitPackage(PackageElement e, Object o) { return throwUOE(); }
96 @Override
97 public String visitType(TypeElement e, Object o) { return throwUOE(); }
98 @Override
99 public String visitTypeParameter(TypeParameterElement e, Object o) { return throwUOE(); }
100 @Override
101 public String visitVariable(VariableElement e, Object o) { return throwUOE(); }
102 }
103
104 private static class IndirectElementVisitorChild
105 extends AbstractElementVisitor6<String, Object> {
106
107 public IndirectElementVisitorChild() {
108 super();
109 }
110
111 @Override
112 public String visitModule(ModuleElement e, Object o) {
113 return super.visitModule(e, o);
114 }
115
116
117 @Override
118 public String visitUnknown(Element e, Object o) {
119 return "visitUnknown";
120 }
121
122 @Override
123 public String visitExecutable(ExecutableElement e, Object o) { return throwUOE(); }
124 @Override
125 public String visitPackage(PackageElement e, Object o) { return throwUOE(); }
126 @Override
127 public String visitType(TypeElement e, Object o) { return throwUOE(); }
128 @Override
129 public String visitTypeParameter(TypeParameterElement e, Object o) { return throwUOE(); }
130 @Override
131 public String visitVariable(VariableElement e, Object o) { return throwUOE(); }
132 }
133
134
135 private static class DirectTypeVisitorChild
136 implements TypeVisitor<String, Object> {
137
138 public DirectTypeVisitorChild() {
139 super();
140 }
141
142 @Override
143 public String visit(TypeMirror t) {
144 return TypeVisitor.super.visit(t);
145 }
146
147 @Override
148 public String visit(TypeMirror t, Object o) {
149 return "visit";
150 }
151
152 @Override
153 public String visitUnknown(TypeMirror t, Object o) { return throwUOE(); }
154 @Override
155 public String visitArray(ArrayType t, Object o) { return throwUOE(); }
156 @Override
157 public String visitDeclared(DeclaredType t, Object o) { return throwUOE(); }
158 @Override
159 public String visitError(ErrorType t, Object o) { return throwUOE(); }
160 @Override
161 public String visitExecutable(ExecutableType t, Object o) { return throwUOE(); }
162 @Override
163 public String visitIntersection(IntersectionType t, Object o) { return throwUOE(); }
164 @Override
165 public String visitNoType(NoType t, Object o) { return throwUOE(); }
166 @Override
167 public String visitNull(NullType t, Object o) { return throwUOE(); }
168 @Override
169 public String visitPrimitive(PrimitiveType t, Object o) { return throwUOE(); }
170 @Override
171 public String visitTypeVariable(TypeVariable t, Object o) { return throwUOE(); }
172 @Override
173 public String visitUnion(UnionType t, Object o) { return throwUOE(); }
174 @Override
175 public String visitWildcard(WildcardType t, Object o) { return throwUOE(); }
176 }
177
178 private static class DirectAnnotationVisitorChild
179 implements AnnotationValueVisitor<String, Object> {
180
181 @Override
182 public String visit(AnnotationValue av) {
183 return AnnotationValueVisitor.super.visit(av);
184 }
185
186 @Override
187 public String visit(AnnotationValue av, Object o) {
188 return "visit";
189 }
190
191 @Override
192 public String visitAnnotation(AnnotationMirror a, Object o) { return throwUOE(); }
193 @Override
194 public String visitArray(List<? extends AnnotationValue> vals,
195 Object o) { return throwUOE(); }
196 @Override
197 public String visitBoolean(boolean b, Object o) { return throwUOE(); }
198 @Override
199 public String visitByte(byte b, Object o) { return throwUOE(); }
200 @Override
201 public String visitChar(char c, Object o) { return throwUOE(); }
202 @Override
203 public String visitDouble(double d, Object o) { return throwUOE(); }
204 @Override
205 public String visitEnumConstant(VariableElement c, Object o) { return throwUOE(); }
206 @Override
207 public String visitFloat(float f, Object o) { return throwUOE(); }
208 @Override
209 public String visitInt(int i, Object o) { return throwUOE(); }
210 @Override
211 public String visitLong(long i, Object o) { return throwUOE(); }
212 @Override
213 public String visitShort(short s, Object o) { return throwUOE(); }
214 @Override
215 public String visitString(String s, Object o) { return throwUOE(); }
216 @Override
217 public String visitType(TypeMirror t, Object o) { return throwUOE(); }
218 @Override
219 public String visitUnknown(AnnotationValue av, Object o) { return throwUOE(); }
220 }
221
222 private static String throwUOE() {
223 throw new UnsupportedOperationException();
224 }
225 }