1/* 2 * Copyright (c) 2010, 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 6449781 6930508 27 * @summary Test that reported names of anonymous classes are non-null. 28 * @author Joseph D. Darcy 29 * @library /tools/javac/lib 30 * @modules jdk.compiler 31 * @build JavacTestingAbstractProcessor 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 52import java.lang.annotation.*; 53import javax.lang.model.element.*; 54import javax.annotation.processing.*; 55import javax.lang.model.SourceVersion; 56import javax.lang.model.element.*; 57import javax.lang.model.util.*; 58import javax.tools.*; 59import java.util.*; 60 61import static java.lang.annotation.RetentionPolicy.*; 62import static javax.lang.model.element.NestingKind.*; 63import static javax.lang.model.util.ElementFilter.*; 64import static javax.tools.Diagnostic.Kind.*; 65import static javax.tools.StandardLocation.*; 66 67@Nesting(TOP_LEVEL) 68public 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 List<String> names = new ArrayList<String>(); 98 for(Class<?> clazz : classes) { 99 String name = clazz.getName(); 100 Nesting annotation = clazz.getAnnotation(Nesting.class); 101 NestingKind expected = annotation == null ? 102 NestingKind.ANONYMOUS : annotation.value(); 103 System.out.format("%s is %s%n", name, expected); 104 testClassName(name); 105 names.add(name); 106 } 107 108 // test all names together 109 testClassNames(names); 110 111 if (errors > 0) 112 throw new RuntimeException(errors + " errors occurred"); 113 } 114 115 /** 116 * Perform annotation processing on the class file name and verify 117 * the existence of different flavors of class names when the 118 * input classes are modeled as elements. 119 */ 120 static void testClassName(String className) { 121 testClassNames(Arrays.asList(className)); 122 } 123 124 /** 125 * Perform annotation processing on a list of class file names and verify 126 * the existence of different flavors of class names when the 127 * input classes are modeled as elements. 128 */ 129 static void testClassNames(List<String> classNames) { 130 System.out.println("test: " + classNames); 131 132 List<String> options = new ArrayList<String>(); 133 options.add("-proc:only"); 134 options.add("-classpath"); 135 options.add(System.getProperty("test.classes")); 136 137 JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler(); 138 JavaCompiler.CompilationTask compileTask = 139 javaCompiler.getTask(null, // Output 140 null, // File manager 141 null, // Diagnostics 142 options, 143 classNames, 144 null); // Sources 145 List<Processor> processors = new ArrayList<Processor>(); 146 processors.add(new ClassNameProber()); 147 compileTask.setProcessors(processors); 148 Boolean goodResult = compileTask.call(); 149 if (!goodResult) { 150 error("Errors found during compile."); 151 } 152 } 153 154 static int errors = 0; 155 156 static void error(String msg) { 157 System.out.println("Error: " + msg); 158 errors++; 159 } 160} 161 162@Target({ElementType.TYPE, ElementType.TYPE_USE}) 163@Retention(RUNTIME) 164@interface Nesting { 165 NestingKind value(); 166} 167 168/** 169 * Probe at the various kinds of names of a type element. 170 */ 171class ClassNameProber extends JavacTestingAbstractProcessor { 172 public ClassNameProber(){super();} 173 174 private boolean classesFound=false; 175 176 public boolean process(Set<? extends TypeElement> annotations, 177 RoundEnvironment roundEnv) { 178 if (!roundEnv.processingOver()) { 179 for(TypeElement typeElt : typesIn(roundEnv.getRootElements())) { 180 classesFound = true; 181 182 // Verify different names are non-null; an NPE will 183 // result in failed compile status being reported. 184 NestingKind nestingKind = typeElt.getNestingKind(); 185 System.out.printf("\tSimple name: ''%s''\tQualified Name: ''%s''\tKind ''%s''\tNesting ''%s''%n", 186 typeElt.getSimpleName().toString(), 187 typeElt.getQualifiedName().toString(), 188 typeElt.getKind().toString(), 189 nestingKind.toString()); 190 191 Nesting annotation = typeElt.getAnnotation(Nesting.class); 192 NestingKind expected = annotation == null ? 193 NestingKind.ANONYMOUS : annotation.value(); 194 195 if (expected != nestingKind) { 196 throw new RuntimeException("Mismatch of expected and reported nesting kind."); 197 } 198 } 199 200 } 201 202 if (!classesFound) { 203 throw new RuntimeException("Error: no classes processed."); 204 } 205 return true; 206 } 207} 208