1 /* 2 * Copyright (c) 2006, 2011, 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 6418666 6423973 6453386 7025809 27 * @summary Test the NoTypes: VOID, PACKAGE, NONE 28 * @author Scott Seligman 29 * @library ../../../lib 30 * @build JavacTestingAbstractProcessor 31 * @compile -g NoTypes.java 32 * @compile -processor NoTypes -proc:only NoTypes.java 33 */ 34 35 import java.util.Set; 36 import javax.annotation.processing.*; 37 import javax.lang.model.SourceVersion; 38 import javax.lang.model.element.*; 39 import javax.lang.model.type.*; 40 import javax.lang.model.util.*; 41 42 import static javax.lang.model.type.TypeKind.*; 43 import static JavacTestingAbstractProcessor.*; 44 45 public class NoTypes extends JavacTestingAbstractProcessor { 46 public boolean process(Set<? extends TypeElement> annoTypes, 47 RoundEnvironment round) { 48 if (!round.processingOver()) 49 doit(annoTypes, round); 50 return true; 51 } 52 53 private void doit(Set<? extends TypeElement> annoTypes, 54 RoundEnvironment round) { 55 56 // The superclass of Object is NONE. 57 TypeElement object = elements.getTypeElement("java.lang.Object"); 58 verifyKind(NONE, object.getSuperclass()); 59 60 // The enclosing type of a top-level class is NONE 61 verifyKind(NONE, ((DeclaredType)object.asType()).getEnclosingType()); 62 63 // The superclass of an interface is NONE. 64 TypeElement i = elements.getTypeElement("NoTypes.I"); 65 verifyKind(NONE, i.getSuperclass()); 66 67 // The type of a package is PACKAGE. 68 Element pkg = i.getEnclosingElement().getEnclosingElement(); 69 verifyKind(PACKAGE, pkg.asType()); 70 71 // A package isn't enclosed. Not yet, anyway. 72 if (pkg.getEnclosingElement() != null) 73 throw new AssertionError(); 74 75 verifyKind(VOID, types.getNoType(VOID)); 76 verifyKind(NONE, types.getNoType(NONE)); 77 78 // The return type of a constructor or void method is VOID. 79 class Scanner extends ElementScanner<Void, Void> { 80 @Override 81 public Void visitExecutable(ExecutableElement e, Void p) { 82 verifyKind(VOID, e.getReturnType()); 83 ExecutableType t = (ExecutableType) e.asType(); 84 verifyKind(VOID, t.getReturnType()); 85 return null; 86 } 87 } 88 TypeElement c = elements.getTypeElement("NoTypes.C"); 89 new Scanner().scan(c); 90 } 91 92 /** 93 * Verify that a NoType instance is of a particular kind, and that 94 * the latest TypeKindVisitor properly dispatches on it. 95 */ 96 private void verifyKind(TypeKind kind, TypeMirror type) { 97 class Vis extends TypeKindVisitor<TypeKind, Void> { 98 @Override 99 public TypeKind visitNoTypeAsVoid(NoType t, Void p) { 100 return VOID; 101 } 102 @Override 103 public TypeKind visitNoTypeAsPackage(NoType t, Void p) { 104 return PACKAGE; 105 } 106 @Override 107 public TypeKind visitNoTypeAsNone(NoType t, Void p) { 108 return NONE; 109 } 110 } 111 if (kind != type.getKind() || kind != new Vis().visit(type)) 112 throw new AssertionError(); 113 } 114 115 // Fodder for the tests 116 interface I { 117 } 118 119 class C { 120 C() {} 121 void m() {} 122 } 123 }