Mercurial > jdk8-mips64-public > langtools / annotate
test/tools/javac/processing/model/util/elements/TestIsFunctionalInterface.java@2eb010b6cb22 (annotated)
test/tools/javac/processing/model/util/elements/TestIsFunctionalInterface.java
Thu, 31 Aug 2017 15:17:03 +0800
- author
- aoqi
- date
- Thu, 31 Aug 2017 15:17:03 +0800
- changeset 2525
- 2eb010b6cb22
- parent 0
- 959103a6100f
- permissions
- -rw-r--r--
merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | */ |
| aoqi@0 | 23 | |
| aoqi@0 | 24 | /* |
| aoqi@0 | 25 | * @test |
| aoqi@0 | 26 | * @bug 8007574 |
| aoqi@0 | 27 | * @summary Test Elements.isFunctionalInterface |
| aoqi@0 | 28 | * @author Joseph D. Darcy |
| aoqi@0 | 29 | * @library /tools/javac/lib |
| aoqi@0 | 30 | * @build JavacTestingAbstractProcessor TestIsFunctionalInterface |
| aoqi@0 | 31 | * @compile -processor TestIsFunctionalInterface TestIsFunctionalInterface.java |
| aoqi@0 | 32 | */ |
| aoqi@0 | 33 | |
| aoqi@0 | 34 | import java.util.Set; |
| aoqi@0 | 35 | import javax.annotation.processing.*; |
| aoqi@0 | 36 | import javax.lang.model.SourceVersion; |
| aoqi@0 | 37 | import static javax.lang.model.SourceVersion.*; |
| aoqi@0 | 38 | import javax.lang.model.element.*; |
| aoqi@0 | 39 | import javax.lang.model.util.*; |
| aoqi@0 | 40 | import static javax.lang.model.util.ElementFilter.*; |
| aoqi@0 | 41 | import static javax.tools.Diagnostic.Kind.*; |
| aoqi@0 | 42 | import static javax.tools.StandardLocation.*; |
| aoqi@0 | 43 | import java.io.*; |
| aoqi@0 | 44 | |
| aoqi@0 | 45 | /** |
| aoqi@0 | 46 | * Test basic workings of Elements.isFunctionalInterface |
| aoqi@0 | 47 | */ |
| aoqi@0 | 48 | public class TestIsFunctionalInterface extends JavacTestingAbstractProcessor { |
| aoqi@0 | 49 | private int count = 0; |
| aoqi@0 | 50 | public boolean process(Set<? extends TypeElement> annotations, |
| aoqi@0 | 51 | RoundEnvironment roundEnv) { |
| aoqi@0 | 52 | if (!roundEnv.processingOver()) { |
| aoqi@0 | 53 | for(TypeElement type : typesIn(roundEnv.getElementsAnnotatedWith(ExpectedIsFunInt.class))) { |
| aoqi@0 | 54 | count++; |
| aoqi@0 | 55 | System.out.println(type); |
| aoqi@0 | 56 | if (elements.isFunctionalInterface(type) != |
| aoqi@0 | 57 | type.getAnnotation(ExpectedIsFunInt.class).value()) { |
| aoqi@0 | 58 | messager.printMessage(ERROR, |
| aoqi@0 | 59 | "Mismatch between expected and computed isFunctionalInterface", |
| aoqi@0 | 60 | type); |
| aoqi@0 | 61 | } |
| aoqi@0 | 62 | } |
| aoqi@0 | 63 | } else { |
| aoqi@0 | 64 | if (count <= 0) |
| aoqi@0 | 65 | messager.printMessage(ERROR, "No types with ExpectedIsFunInt processed."); |
| aoqi@0 | 66 | } |
| aoqi@0 | 67 | return true; |
| aoqi@0 | 68 | } |
| aoqi@0 | 69 | } |
| aoqi@0 | 70 | |
| aoqi@0 | 71 | @interface ExpectedIsFunInt { |
| aoqi@0 | 72 | boolean value(); |
| aoqi@0 | 73 | } |
| aoqi@0 | 74 | |
| aoqi@0 | 75 | // Examples below from the lambda specification documents. |
| aoqi@0 | 76 | |
| aoqi@0 | 77 | @ExpectedIsFunInt(false) // Equals is already an implicit member |
| aoqi@0 | 78 | interface Foo1 { boolean equals(Object obj); } |
| aoqi@0 | 79 | |
| aoqi@0 | 80 | @ExpectedIsFunInt(true) // Bar has one abstract non-Object method |
| aoqi@0 | 81 | interface Bar1 extends Foo1 { int compare(String o1, String o2); } |
| aoqi@0 | 82 | |
| aoqi@0 | 83 | |
| aoqi@0 | 84 | @ExpectedIsFunInt(true) // Comparator has one abstract non-Object method |
| aoqi@0 | 85 | interface LocalComparator<T> { |
| aoqi@0 | 86 | boolean equals(Object obj); |
| aoqi@0 | 87 | int compare(T o1, T o2); |
| aoqi@0 | 88 | } |
| aoqi@0 | 89 | |
| aoqi@0 | 90 | @ExpectedIsFunInt(false) // Method Object.clone is not public |
| aoqi@0 | 91 | interface Foo2 { |
| aoqi@0 | 92 | int m(); |
| aoqi@0 | 93 | Object clone(); |
| aoqi@0 | 94 | } |
| aoqi@0 | 95 | |
| aoqi@0 | 96 | interface X1 { int m(Iterable<String> arg); } |
| aoqi@0 | 97 | interface Y1 { int m(Iterable<String> arg); } |
| aoqi@0 | 98 | @ExpectedIsFunInt(true) // Two methods, but they have the same signature |
| aoqi@0 | 99 | interface Z1 extends X1, Y1 {} |
| aoqi@0 | 100 | |
| aoqi@0 | 101 | interface X2 { Iterable m(Iterable<String> arg); } |
| aoqi@0 | 102 | interface Y2 { Iterable<String> m(Iterable arg); } |
| aoqi@0 | 103 | @ExpectedIsFunInt(true) // Y.m is a subsignature & return-type-substitutable |
| aoqi@0 | 104 | interface Z2 extends X2, Y2 {} |
| aoqi@0 | 105 | |
| aoqi@0 | 106 | interface Action<T> { |
| aoqi@0 | 107 | T doit(); |
| aoqi@0 | 108 | } |
| aoqi@0 | 109 | @ExpectedIsFunInt(true) |
| aoqi@0 | 110 | interface LocalExecutor { <T> T execute(Action<T> a); } |
| aoqi@0 | 111 | |
| aoqi@0 | 112 | interface X5 { <T> T execute(Action<T> a); } |
| aoqi@0 | 113 | interface Y5 { <S> S execute(Action<S> a); } |
| aoqi@0 | 114 | @ExpectedIsFunInt(true) // Functional: signatures are "the same" |
| aoqi@0 | 115 | interface Exec5 extends X5, Y5 {} |
