1 /* 2 * Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6418666 6423973 6453386 27 * @summary Test the NoTypes: VOID, PACKAGE, NONE 28 * @author Scott Seligman 29 * @compile -g NoTypes.java 30 * @compile -processor NoTypes -proc:only NoTypes.java 31 */ 32 33 import java.util.Set; 34 import javax.annotation.processing.*; 35 import javax.lang.model.SourceVersion; 36 import javax.lang.model.element.*; 37 import javax.lang.model.type.*; 38 import javax.lang.model.util.*; 39 40 import static javax.lang.model.type.TypeKind.*; 41 42 43 @SupportedSourceVersion(SourceVersion.RELEASE_6) 44 @SupportedAnnotationTypes("*") 45 public class NoTypes extends AbstractProcessor { 46 47 Elements elements; 48 Types types; 49 50 public void init(ProcessingEnvironment penv) { 51 super.init(penv); 52 elements = penv.getElementUtils(); 53 types = penv.getTypeUtils(); 54 } 55 56 public boolean process(Set<? extends TypeElement> annoTypes, 57 RoundEnvironment round) { 58 if (!round.processingOver()) 59 doit(annoTypes, round); 60 return true; 61 } 62 63 private void doit(Set<? extends TypeElement> annoTypes, 64 RoundEnvironment round) { 65 66 // The superclass of Object is NONE. 67 TypeElement object = elements.getTypeElement("java.lang.Object"); 68 verifyKind(NONE, object.getSuperclass()); 69 70 // The enclosing type of a top-level class is NONE 71 verifyKind(NONE, ((DeclaredType)object.asType()).getEnclosingType()); 72 73 // The superclass of an interface is NONE. 74 TypeElement i = elements.getTypeElement("NoTypes.I"); 75 verifyKind(NONE, i.getSuperclass()); 76 77 // The type of a package is PACKAGE. 78 Element pkg = i.getEnclosingElement().getEnclosingElement(); 79 verifyKind(PACKAGE, pkg.asType()); 80 81 // A package isn't enclosed. Not yet, anyway. 82 if (pkg.getEnclosingElement() != null) 83 throw new AssertionError(); 84 85 verifyKind(VOID, types.getNoType(VOID)); 86 verifyKind(NONE, types.getNoType(NONE)); 87 88 // The return type of a constructor or void method is VOID. 89 class Scanner extends ElementScanner6<Void, Void> { 90 @Override 91 public Void visitExecutable(ExecutableElement e, Void p) { 92 verifyKind(VOID, e.getReturnType()); 93 ExecutableType t = (ExecutableType) e.asType(); 94 verifyKind(VOID, t.getReturnType()); 95 return null; 96 } 97 } 98 TypeElement c = elements.getTypeElement("NoTypes.C"); 99 new Scanner().scan(c); 100 } 101 102 /** 103 * Verify that a NoType instance is of a particular kind, 104 * and that TypeKindVisitor6 properly dispatches on it. 105 */ 106 private void verifyKind(TypeKind kind, TypeMirror type) { 107 class Vis extends TypeKindVisitor6<TypeKind, Void> { 108 @Override 109 public TypeKind visitNoTypeAsVoid(NoType t, Void p) { 110 return VOID; 111 } 112 @Override 113 public TypeKind visitNoTypeAsPackage(NoType t, Void p) { 114 return PACKAGE; 115 } 116 @Override 117 public TypeKind visitNoTypeAsNone(NoType t, Void p) { 118 return NONE; 119 } 120 } 121 if (kind != type.getKind() || kind != new Vis().visit(type)) 122 throw new AssertionError(); 123 } 124 125 126 // Fodder for the tests 127 128 interface I { 129 } 130 131 class C { 132 C() {} 133 void m() {} 134 } 135 }