| /* |
| * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8011027 8046916 |
| * @library /tools/javac/lib |
| * @build JavacTestingAbstractProcessor TestTypeParameterAnnotations |
| * @compile -processor TestTypeParameterAnnotations -proc:only TestTypeParameterAnnotations.java |
| */ |
| |
| import java.util.*; |
| import java.lang.annotation.*; |
| import javax.annotation.processing.*; |
| import javax.lang.model.element.*; |
| import javax.tools.*; |
| |
| @ExpectedTypeParameterAnnotations(typeParameterName="T1", |
| annotations={"Foo1", "Bar1", "Baz1"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="T2", annotations={}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="T3", |
| annotations={"Foo2", "Bar2", "Baz2"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="T4", annotations={}) |
| public class TestTypeParameterAnnotations<@Foo1 @Bar1 @Baz1 T1, T2, @Foo2 @Bar2 @Baz2 T3, T4> extends |
| JavacTestingAbstractProcessor { |
| int round = 0; |
| |
| public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { |
| if (++round == 1) { |
| int found = (new Scanner()).scan(roundEnv.getRootElements(), null); |
| if (found == expect) { |
| ; //nop |
| } else { |
| error("unexpected number of results: expected " + expect |
| + ", found " + found); |
| } |
| |
| } |
| return true; |
| } |
| |
| class Scanner extends JavacTestingAbstractProcessor.ElementScanner<Integer,Void> { |
| @Override |
| public Integer visitExecutable(ExecutableElement e, Void p) { |
| super.visitExecutable(e, p); |
| found += check(e, e.getTypeParameters()); |
| return found; |
| } |
| |
| @Override |
| public Integer visitType(TypeElement e, Void p) { |
| super.visitType(e, p); |
| found += check(e, e.getTypeParameters()); |
| return found; |
| } |
| |
| int found; |
| } |
| |
| int check(Element e, List<? extends TypeParameterElement> typarams) { |
| if (typarams.isEmpty()) |
| return 0; |
| |
| for (TypeParameterElement tpe : typarams) { |
| ExpectedTypeParameterAnnotations expected = null; |
| for (ExpectedTypeParameterAnnotations a : e.getAnnotationsByType(ExpectedTypeParameterAnnotations.class)) { |
| if (tpe.getSimpleName().contentEquals(a.typeParameterName())) { |
| expected = a; |
| break; |
| } |
| } |
| if (expected == null) { |
| throw new IllegalStateException("Does not have expected values annotation."); |
| } |
| checkAnnotationMirrors(tpe, tpe.getAnnotationMirrors(), expected); |
| checkAnnotationMirrors(tpe, elements.getAllAnnotationMirrors(tpe), expected); |
| checkGetAnnotation(tpe, expected); |
| checkGetAnnotations(tpe, expected); |
| } |
| |
| return typarams.size(); |
| } |
| |
| void checkAnnotationMirrors(TypeParameterElement tpe, List<? extends AnnotationMirror> l, ExpectedTypeParameterAnnotations expected) { |
| String[] expectedAnnotations = expected.annotations(); |
| |
| if (l.size() != expectedAnnotations.length) { |
| error("Incorrect number of annotations, got " + l.size() + |
| ", should be " + expectedAnnotations.length, tpe); |
| return ; |
| } |
| |
| for (int i = 0; i < expectedAnnotations.length; i++) { |
| AnnotationMirror m = l.get(i); |
| if (!m.getAnnotationType().asElement().equals(elements.getTypeElement(expectedAnnotations[i]))) { |
| error("Wrong type of annotation, was expecting @Foo", m.getAnnotationType().asElement()); |
| return ; |
| } |
| } |
| } |
| |
| void checkGetAnnotation(TypeParameterElement tpe, ExpectedTypeParameterAnnotations expected) { |
| List<String> expectedAnnotations = Arrays.asList(expected.annotations()); |
| |
| for (Class<? extends Annotation> c : ALL_ANNOTATIONS) { |
| Object a = tpe.getAnnotation(c); |
| |
| if (a != null ^ expectedAnnotations.indexOf(c.getName()) != (-1)) { |
| error("Unexpected behavior for " + c.getName(), tpe); |
| return ; |
| } |
| } |
| } |
| |
| void checkGetAnnotations(TypeParameterElement tpe, ExpectedTypeParameterAnnotations expected) { |
| List<String> expectedAnnotations = Arrays.asList(expected.annotations()); |
| |
| for (Class<? extends Annotation> c : ALL_ANNOTATIONS) { |
| Object[] a = tpe.getAnnotationsByType(c); |
| |
| if (a.length > 0 ^ expectedAnnotations.indexOf(c.getName()) != (-1)) { |
| error("Unexpected behavior for " + c.getName(), tpe); |
| return ; |
| } |
| } |
| } |
| |
| void note(String msg) { |
| messager.printMessage(Diagnostic.Kind.NOTE, msg); |
| } |
| |
| void note(String msg, Element e) { |
| messager.printMessage(Diagnostic.Kind.NOTE, msg, e); |
| } |
| |
| void error(String msg, Element e) { |
| messager.printMessage(Diagnostic.Kind.ERROR, msg, e); |
| } |
| |
| void error(String msg) { |
| messager.printMessage(Diagnostic.Kind.ERROR, msg); |
| } |
| |
| Class<? extends Annotation>[] ALL_ANNOTATIONS = new Class[] { |
| Foo1.class, Bar1.class, Baz1.class, |
| Foo2.class, Bar2.class, Baz2.class, |
| }; |
| |
| // additional generic elements to test |
| @ExpectedTypeParameterAnnotations(typeParameterName="W", |
| annotations={"Foo1", "Bar1", "Baz1"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="X", annotations={}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="Y", |
| annotations={"Foo2", "Bar2", "Baz2"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="Z", annotations={}) |
| <@Foo1 @Bar1 @Baz1 W, X, @Foo2 @Bar2 @Baz2 Y, Z> X m(X x) { return x; } |
| |
| @ExpectedTypeParameterAnnotations(typeParameterName="W", |
| annotations={"Foo1", "Bar1", "Baz1"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="X", annotations={}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="Y", |
| annotations={"Foo2", "Bar2", "Baz2"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="Z", annotations={}) |
| interface Intf<@Foo1 @Bar1 @Baz1 W, X, @Foo2 @Bar2 @Baz2 Y, Z> { X m() ; } |
| |
| @ExpectedTypeParameterAnnotations(typeParameterName="W", |
| annotations={"Foo1", "Bar1", "Baz1"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="X", annotations={}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="Y", |
| annotations={"Foo2", "Bar2", "Baz2"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="Z", annotations={}) |
| class Clazz<@Foo1 @Bar1 @Baz1 W, X, @Foo2 @Bar2 @Baz2 Y, Z> { |
| @ExpectedTypeParameterAnnotations(typeParameterName="W", |
| annotations={"Foo1", "Bar1", "Baz1"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="X", annotations={}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="Y", |
| annotations={"Foo2", "Bar2", "Baz2"}) |
| @ExpectedTypeParameterAnnotations(typeParameterName="Z", annotations={}) |
| <@Foo1 @Bar1 @Baz1 W, X, @Foo2 @Bar2 @Baz2 Y, Z> Clazz() { } |
| } |
| |
| final int expect = 5 * 4; // top level class, plus preceding examples, 4 type variables each |
| } |
| |
| @Target(ElementType.TYPE_PARAMETER) |
| @interface Foo1 {} |
| |
| @Target(ElementType.TYPE_PARAMETER) |
| @interface Bar1 {} |
| |
| @Target(ElementType.TYPE_PARAMETER) |
| @interface Baz1 {} |
| |
| @Target(ElementType.TYPE_PARAMETER) |
| @interface Foo2 {} |
| |
| @Target(ElementType.TYPE_PARAMETER) |
| @interface Bar2 {} |
| |
| @Target(ElementType.TYPE_PARAMETER) |
| @interface Baz2 {} |
| |
| @Repeatable(ExpectedTypeParameterAnnotationsCollection.class) |
| @interface ExpectedTypeParameterAnnotations { |
| public String typeParameterName(); |
| public String[] annotations(); |
| } |
| |
| @interface ExpectedTypeParameterAnnotationsCollection { |
| public ExpectedTypeParameterAnnotations[] value(); |
| } |