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 * @build TestAnonSourceNames 30 * @compile -processor TestAnonSourceNames TestAnonClassNames.java 31 * @run main TestAnonClassNames 32 */ 33 34 /* 35 * This test operates in phases to test retrieving the qualified name 36 * of anonymous classes from type elements modeling the anonymous 37 * class. The type elements are generated using both source files and 38 * class files as the basis of constructing the elements. 39 * 40 * Source files will be tested by the @compile line which runs 41 * TestAnonSourceNames as an annotation processor over this file. 42 * 43 * Class files are tested by the @run command on this type. This 44 * class gets the names of classes with different nesting kinds, 45 * including anonymous classes, and then invokes the compiler with an 46 * annotation processor having the class files names as inputs. The 47 * compiler is invoked via the javax.tools mechanism. 48 */ 49 50 import java.lang.annotation.*; 51 import javax.lang.model.element.*; 52 import javax.annotation.processing.*; 53 import javax.lang.model.SourceVersion; 54 import javax.lang.model.element.*; 55 import javax.lang.model.util.*; 56 import javax.tools.*; 57 import java.util.*; 58 59 import static java.lang.annotation.RetentionPolicy.*; 60 import static javax.lang.model.element.NestingKind.*; 61 import static javax.lang.model.util.ElementFilter.*; 62 import static javax.tools.Diagnostic.Kind.*; 63 import static javax.tools.StandardLocation.*; 64 65 @Nesting(TOP_LEVEL) 66 public class TestAnonClassNames { 67 @Nesting(MEMBER) 68 static class MemberClass1{} 69 70 @Nesting(MEMBER) 71 class MemberClass2{} 72 73 @Nesting(MEMBER) 74 class Win$$AtVegas { } // Class with funny name. 75 76 public static void main(String... argv) { 77 @Nesting(LOCAL) 78 class LocalClass{}; 79 80 Object o = new @Nesting(ANONYMOUS) Object() { // An anonymous annotated class 81 public String toString() { 82 return "I have no name!"; 83 } 84 }; 85 86 Class<?>[] classes = { 87 MemberClass1.class, 88 MemberClass2.class, 89 LocalClass.class, 90 Win$$AtVegas.class, 91 o.getClass(), 92 TestAnonClassNames.class, 93 }; 94 95 for(Class<?> clazz : classes) { 96 String name = clazz.getName(); 97 System.out.format("%s is %s%n", 98 clazz.getName(), 99 clazz.getAnnotation(Nesting.class).value()); 100 testClassName(name); 101 } 102 } 103 104 /** 105 * Perform annotation processing on the class file name and verify 106 * the existence of different flavors of class names when the 107 * input classes are modeled as elements. 108 */ 109 static void testClassName(String className) { 110 JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler(); 111 List<String> classNames = new ArrayList<String>(); 112 classNames.add(className); 113 114 List<String> options = new ArrayList<String>(); 115 options.add("-proc:only"); 116 options.add("-classpath"); 117 options.add(System.getProperty("test.classes")); 118 119 JavaCompiler.CompilationTask compileTask = 120 javaCompiler.getTask(null, // Output 121 null, // File manager 122 null, // Diagnostics 123 options, 124 classNames, 125 null); // Sources 126 List<Processor> processors = new ArrayList<Processor>(); 127 processors.add(new ClassNameProber()); 128 compileTask.setProcessors(processors); 129 Boolean goodResult = compileTask.call(); 130 if (!goodResult) { 131 throw new RuntimeException("Errors found during compile."); 132 } 133 } 134 } 135 136 @Retention(RUNTIME) 137 @interface Nesting { 138 NestingKind value(); 139 } 140 141 /** 142 * Probe at the various kinds of names of a type element. 143 */ 144 @SupportedAnnotationTypes("*") 145 class ClassNameProber extends AbstractProcessor { 146 public ClassNameProber(){super();} 147 148 private boolean classesFound=false; 149 150 public boolean process(Set<? extends TypeElement> annotations, 151 RoundEnvironment roundEnv) { 152 if (!roundEnv.processingOver()) { 153 for(TypeElement typeElt : typesIn(roundEnv.getRootElements())) { 154 classesFound = true; 155 156 // Verify different names are non-null; an NPE will 157 // result in failed compile status being reported. 158 NestingKind nestingKind = typeElt.getNestingKind(); 159 System.out.printf("\tSimple name: ''%s''\tQualified Name: ''%s''\tKind ''%s''\tNesting ''%s''%n", 160 typeElt.getSimpleName().toString(), 161 typeElt.getQualifiedName().toString(), 162 typeElt.getKind().toString(), 163 nestingKind.toString()); 164 165 if (typeElt.getAnnotation(Nesting.class).value() != nestingKind) { 166 throw new RuntimeException("Mismatch of expected and reported nesting kind."); 167 } 168 } 169 170 } 171 172 if (!classesFound) { 173 throw new RuntimeException("Error: no classes processed."); 174 } 175 return true; 176 } 177 178 public SourceVersion getSupportedSourceVersion() { 179 return SourceVersion.latest(); 180 } 181 }