Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/processing/model/element/TestTypeParameter.java
test/tools/javac/processing/model/element/TestTypeParameter.java
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| 1 /* | |
| 2 * Copyright (c) 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 6505047 | |
| 27 * @summary javax.lang.model.element.Element.getEnclosingElement() doesn't return null for type parameter | |
| 28 * @library /tools/javac/lib | |
| 29 * @build JavacTestingAbstractProcessor TestTypeParameter | |
| 30 * @compile -processor TestTypeParameter -proc:only TestTypeParameter.java | |
| 31 */ | |
| 32 | |
| 33 import java.util.*; | |
| 34 import javax.annotation.processing.*; | |
| 35 import javax.lang.model.element.*; | |
| 36 import javax.lang.model.util.*; | |
| 37 import javax.tools.*; | |
| 38 | |
| 39 public class TestTypeParameter<T> extends JavacTestingAbstractProcessor { | |
| 40 int round = 0; | |
| 41 | |
| 42 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { | |
| 43 if (++round == 1) { | |
| 44 int found = (new Scanner()).scan(roundEnv.getRootElements(), null); | |
| 45 if (found == expect) { | |
| 46 note("generic elements found and verified: " + found); | |
| 47 } else { | |
| 48 error("unexpected number of results: expected " + expect | |
| 49 + ", found " + found); | |
| 50 } | |
| 51 | |
| 52 } | |
| 53 return true; | |
| 54 } | |
| 55 | |
| 56 class Scanner extends ElementScanner7<Integer,Void> { | |
| 57 @Override | |
| 58 public Integer visitExecutable(ExecutableElement e, Void p) { | |
| 59 super.visitExecutable(e, p); | |
| 60 found += check(e, e.getTypeParameters()); | |
| 61 return found; | |
| 62 } | |
| 63 | |
| 64 @Override | |
| 65 public Integer visitType(TypeElement e, Void p) { | |
| 66 super.visitType(e, p); | |
| 67 found += check(e, e.getTypeParameters()); | |
| 68 return found; | |
| 69 } | |
| 70 | |
| 71 int found; | |
| 72 } | |
| 73 | |
| 74 /** | |
| 75 * Check if type parameters, if any, have expected owner. | |
| 76 * Return 1 if typarams not empty and all have expected owner, else return 0. | |
| 77 */ | |
| 78 int check(Element e, List<? extends TypeParameterElement> typarams) { | |
| 79 note("checking " + e, e); | |
| 80 if (typarams.isEmpty()) { | |
| 81 note("no type parameters found", e); | |
| 82 return 0; | |
| 83 } | |
| 84 for (TypeParameterElement tpe: typarams) { | |
| 85 note("checking type parameter " + tpe, tpe); | |
| 86 if (tpe.getEnclosingElement() != e) { | |
| 87 error("unexpected owner; expected: " + e | |
| 88 + ", found " + tpe.getEnclosingElement(), | |
| 89 tpe); | |
| 90 return 0; | |
| 91 } | |
| 92 if (tpe.getEnclosingElement() != tpe.getGenericElement()) { | |
| 93 error("unexpected generic element; expected: " + tpe.getGenericElement() | |
| 94 + ", found " + tpe.getEnclosingElement(), | |
| 95 tpe); | |
| 96 return 0; | |
| 97 } | |
| 98 } | |
| 99 note("verified " + e, e); | |
| 100 return 1; | |
| 101 } | |
| 102 | |
| 103 void note(String msg) { | |
| 104 messager.printMessage(Diagnostic.Kind.NOTE, msg); | |
| 105 } | |
| 106 | |
| 107 void note(String msg, Element e) { | |
| 108 messager.printMessage(Diagnostic.Kind.NOTE, msg, e); | |
| 109 } | |
| 110 | |
| 111 void error(String msg, Element e) { | |
| 112 messager.printMessage(Diagnostic.Kind.ERROR, msg, e); | |
| 113 } | |
| 114 | |
| 115 void error(String msg) { | |
| 116 messager.printMessage(Diagnostic.Kind.ERROR, msg); | |
| 117 } | |
| 118 | |
| 119 // additional generic elements to test | |
| 120 <X> X m(X x) { return x; } | |
| 121 | |
| 122 interface Intf<X> { X m() ; } | |
| 123 | |
| 124 class Class<X> { | |
| 125 <Y> Class() { } | |
| 126 } | |
| 127 | |
| 128 final int expect = 5; // top level class, plus preceding examples | |
| 129 } |
