1 /*
2 * Copyright (c) 2010, 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 6449781
27 * @summary Test that reported names of anonymous classes are non-null.
28 * @author Joseph D. Darcy
29 * @library ../../../lib
30 * @build JavacTestingAbstractProcessor
31 * @build TestAnonSourceNames
32 * @compile -processor TestAnonSourceNames TestAnonClassNames.java
33 * @run main TestAnonClassNames
34 */
35
36 /*
37 * This test operates in phases to test retrieving the qualified name
38 * of anonymous classes from type elements modeling the anonymous
39 * class. The type elements are generated using both source files and
40 * class files as the basis of constructing the elements.
41 *
42 * Source files will be tested by the @compile line which runs
43 * TestAnonSourceNames as an annotation processor over this file.
44 *
45 * Class files are tested by the @run command on this type. This
46 * class gets the names of classes with different nesting kinds,
47 * including anonymous classes, and then invokes the compiler with an
48 * annotation processor having the class files names as inputs. The
49 * compiler is invoked via the javax.tools mechanism.
50 */
51
52 import java.lang.annotation.*;
53 import javax.lang.model.element.*;
54 import javax.annotation.processing.*;
55 import javax.lang.model.SourceVersion;
56 import javax.lang.model.element.*;
57 import javax.lang.model.util.*;
58 import javax.tools.*;
59 import java.util.*;
60
61 import static java.lang.annotation.RetentionPolicy.*;
62 import static javax.lang.model.element.NestingKind.*;
63 import static javax.lang.model.util.ElementFilter.*;
64 import static javax.tools.Diagnostic.Kind.*;
65 import static javax.tools.StandardLocation.*;
66
67 @Nesting(TOP_LEVEL)
68 public class TestAnonClassNames {
69 @Nesting(MEMBER)
70 static class MemberClass1{}
71
72 @Nesting(MEMBER)
73 class MemberClass2{}
74
75 @Nesting(MEMBER)
76 class Win$$AtVegas { } // Class with funny name.
77
78 public static void main(String... argv) {
79 @Nesting(LOCAL)
80 class LocalClass{};
81
82 Object o = new @Nesting(ANONYMOUS) Object() { // An anonymous annotated class
83 public String toString() {
84 return "I have no name!";
85 }
86 };
87
88 Class<?>[] classes = {
89 MemberClass1.class,
90 MemberClass2.class,
91 LocalClass.class,
92 Win$$AtVegas.class,
93 o.getClass(),
94 TestAnonClassNames.class,
95 };
96
97 for(Class<?> clazz : classes) {
98 String name = clazz.getName();
99 System.out.format("%s is %s%n",
100 clazz.getName(),
101 clazz.getAnnotation(Nesting.class).value());
102 testClassName(name);
103 }
104 }
105
106 /**
107 * Perform annotation processing on the class file name and verify
108 * the existence of different flavors of class names when the
109 * input classes are modeled as elements.
110 */
111 static void testClassName(String className) {
112 JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();
113 List<String> classNames = new ArrayList<String>();
114 classNames.add(className);
115
116 List<String> options = new ArrayList<String>();
117 options.add("-proc:only");
118 options.add("-classpath");
119 options.add(System.getProperty("test.classes"));
120
121 JavaCompiler.CompilationTask compileTask =
122 javaCompiler.getTask(null, // Output
123 null, // File manager
124 null, // Diagnostics
125 options,
126 classNames,
127 null); // Sources
128 List<Processor> processors = new ArrayList<Processor>();
129 processors.add(new ClassNameProber());
130 compileTask.setProcessors(processors);
131 Boolean goodResult = compileTask.call();
132 if (!goodResult) {
133 throw new RuntimeException("Errors found during compile.");
134 }
135 }
136 }
137
138 @Retention(RUNTIME)
139 @interface Nesting {
140 NestingKind value();
141 }
142
143 /**
144 * Probe at the various kinds of names of a type element.
145 */
146 class ClassNameProber extends JavacTestingAbstractProcessor {
147 public ClassNameProber(){super();}
148
149 private boolean classesFound=false;
150
151 public boolean process(Set<? extends TypeElement> annotations,
152 RoundEnvironment roundEnv) {
153 if (!roundEnv.processingOver()) {
154 for(TypeElement typeElt : typesIn(roundEnv.getRootElements())) {
155 classesFound = true;
156
157 // Verify different names are non-null; an NPE will
158 // result in failed compile status being reported.
159 NestingKind nestingKind = typeElt.getNestingKind();
160 System.out.printf("\tSimple name: ''%s''\tQualified Name: ''%s''\tKind ''%s''\tNesting ''%s''%n",
161 typeElt.getSimpleName().toString(),
162 typeElt.getQualifiedName().toString(),
163 typeElt.getKind().toString(),
164 nestingKind.toString());
165
166 if (typeElt.getAnnotation(Nesting.class).value() != nestingKind) {
167 throw new RuntimeException("Mismatch of expected and reported nesting kind.");
168 }
169 }
170
171 }
172
173 if (!classesFound) {
174 throw new RuntimeException("Error: no classes processed.");
175 }
176 return true;
177 }
178 }