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1 /* |
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2 * Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 /* |
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25 * @test |
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26 * @bug 6418666 6423973 6453386 7025809 |
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27 * @summary Test the NoTypes: VOID, PACKAGE, NONE |
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28 * @author Scott Seligman |
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29 * @library /tools/javac/lib |
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30 * @build JavacTestingAbstractProcessor |
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31 * @compile -g NoTypes.java |
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32 * @compile -processor NoTypes -proc:only NoTypes.java |
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33 */ |
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34 |
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35 import java.util.Set; |
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36 import javax.annotation.processing.*; |
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37 import javax.lang.model.SourceVersion; |
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38 import javax.lang.model.element.*; |
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39 import javax.lang.model.type.*; |
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40 import javax.lang.model.util.*; |
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41 |
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42 import static javax.lang.model.type.TypeKind.*; |
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43 |
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44 public class NoTypes extends JavacTestingAbstractProcessor { |
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45 public boolean process(Set<? extends TypeElement> annoTypes, |
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46 RoundEnvironment round) { |
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47 if (!round.processingOver()) |
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48 doit(annoTypes, round); |
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49 return true; |
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50 } |
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51 |
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52 private void doit(Set<? extends TypeElement> annoTypes, |
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53 RoundEnvironment round) { |
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54 |
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55 // The superclass of Object is NONE. |
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56 TypeElement object = elements.getTypeElement("java.lang.Object"); |
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57 verifyKind(NONE, object.getSuperclass()); |
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58 |
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59 // The enclosing type of a top-level class is NONE |
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60 verifyKind(NONE, ((DeclaredType)object.asType()).getEnclosingType()); |
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61 |
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62 // The superclass of an interface is NONE. |
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63 TypeElement i = elements.getTypeElement("NoTypes.I"); |
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64 verifyKind(NONE, i.getSuperclass()); |
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65 |
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66 // The type of a package is PACKAGE. |
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67 Element pkg = i.getEnclosingElement().getEnclosingElement(); |
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68 verifyKind(PACKAGE, pkg.asType()); |
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69 |
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70 // A package isn't enclosed. Not yet, anyway. |
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71 if (pkg.getEnclosingElement() != null) |
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72 throw new AssertionError(); |
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73 |
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74 verifyKind(VOID, types.getNoType(VOID)); |
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75 verifyKind(NONE, types.getNoType(NONE)); |
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76 |
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77 // The return type of a constructor or void method is VOID. |
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78 class Scanner extends ElementScanner<Void, Void> { |
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79 @Override |
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80 public Void visitExecutable(ExecutableElement e, Void p) { |
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81 verifyKind(VOID, e.getReturnType()); |
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82 ExecutableType t = (ExecutableType) e.asType(); |
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83 verifyKind(VOID, t.getReturnType()); |
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84 return null; |
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85 } |
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86 } |
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87 TypeElement c = elements.getTypeElement("NoTypes.C"); |
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88 new Scanner().scan(c); |
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89 } |
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90 |
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91 /** |
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92 * Verify that a NoType instance is of a particular kind, and that |
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93 * the latest TypeKindVisitor properly dispatches on it. |
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94 */ |
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95 private void verifyKind(TypeKind kind, TypeMirror type) { |
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96 class Vis extends TypeKindVisitor<TypeKind, Void> { |
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97 @Override |
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98 public TypeKind visitNoTypeAsVoid(NoType t, Void p) { |
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99 return VOID; |
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100 } |
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101 @Override |
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102 public TypeKind visitNoTypeAsPackage(NoType t, Void p) { |
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103 return PACKAGE; |
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104 } |
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105 @Override |
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106 public TypeKind visitNoTypeAsNone(NoType t, Void p) { |
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107 return NONE; |
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108 } |
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109 } |
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110 if (kind != type.getKind() || kind != new Vis().visit(type)) |
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111 throw new AssertionError(); |
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112 } |
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113 |
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114 // Fodder for the tests |
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115 interface I { |
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116 } |
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117 |
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118 class C { |
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119 C() {} |
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120 void m() {} |
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121 } |
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122 } |