1 /*
2 * Copyright (c) 2018, 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 8202141
27 * @enablePreview
28 * @summary Verify that .class synthetic Symbols are not duplicated.
29 * @library /tools/javac/lib
30 * @modules jdk.compiler/com.sun.tools.javac.api
31 * jdk.compiler/com.sun.tools.javac.code
32 * jdk.compiler/com.sun.tools.javac.file
33 * jdk.compiler/com.sun.tools.javac.tree
34 * jdk.compiler/com.sun.tools.javac.util
35 * @build combo.ComboTestHelper
36 * @run main ClassFieldDeduplication
37 */
38
39 import com.sun.source.util.TaskEvent;
40 import com.sun.source.util.TaskListener;
41 import com.sun.tools.javac.code.Symbol;
42 import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
43 import com.sun.tools.javac.tree.JCTree.JCFieldAccess;
44 import com.sun.tools.javac.tree.TreeScanner;
45 import combo.ComboInstance;
46 import combo.ComboParameter;
47 import combo.ComboTestHelper;
48
49 public class ClassFieldDeduplication extends ComboInstance<ClassFieldDeduplication> {
50
51 enum Type implements ComboParameter {
52 OBJECT("Object"),
53 PRIMITIVE("int"),
54 BOXED_PRIMITIVE("Integer"),
55 VOID("void"),
56 BOXED_VOID("Void"),
57 OBJECT_ARRAY("Object[]"),
58 PRIMITIVE_ARRAY("int[]"),
59 BOXED_PRIMITIVE_ARRAY("Integer[]"),
60 BOXED_VOID_ARRAY("Void[]");
61
62 String type;
63
64 Type(String type) {
65 this.type = type;
66 }
67
68 @Override
69 public String expand(String optParameter) {
70 return type;
71 }
72
73 }
74
75 public static void main(String... args) throws Exception {
76 new ComboTestHelper<ClassFieldDeduplication>()
77 .withDimension("TYPE", Type.values())
78 .run(ClassFieldDeduplication::new);
79 }
80
81 private static final String TEMPLATE =
82 "class Test { void t() { Object o1 = #{TYPE}.class; Object o2 = #{TYPE}.class; } }";
83
84 @Override
85 protected void doWork() throws Throwable {
86 newCompilationTask()
87 .withSourceFromTemplate(TEMPLATE)
88 .withListener(new TaskListener() {
89 JCCompilationUnit cut;
90 @Override
91 public void finished(TaskEvent e) {
92 if (e.getKind() == TaskEvent.Kind.PARSE) {
93 if (cut != null)
94 throw new AssertionError();
95 cut = (JCCompilationUnit) e.getCompilationUnit();
96 }
97 if (e.getKind() == TaskEvent.Kind.ANALYZE) {
98 cut.accept(new TreeScanner() {
99 Symbol s;
100 @Override
101 public void visitSelect(JCFieldAccess tree) {
102 if (tree.name.contentEquals("class")) {
103 if (s == null) {
104 s = tree.sym;
105 } else if (s != tree.sym) {
106 throw new AssertionError("Duplicated field symbol.");
107 }
108 }
109 super.visitSelect(tree);
110 }
111 });
112 }
113 }
114
115 })
116 .analyze(els -> {});
117 }
118
119 }