Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 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

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  */

 /**

  * @test

  * @bug 8038788

  * @summary Verify proper handling of annotations after method's type parameters.

  * @build AfterMethodTypeParams

  * @run main AfterMethodTypeParams

  */

 import java.io.IOException;

 import java.io.StringWriter;

 import java.net.URI;

 import java.util.*;

 import javax.lang.model.element.Name;

 import javax.tools.*;

 import com.sun.source.tree.*;

 import com.sun.source.util.*;

 public class AfterMethodTypeParams {

     public static void main(String... args) throws IOException {

         new AfterMethodTypeParams().run();

     }

     void run() throws IOException {

         JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();

         for (TestCase tc : testCases) {

             String test = TEMPLATE.replace("CONTENT", tc.snippet);

             List<JavaFileObject> files = Arrays.asList(new MyFileObject(test));

             StringWriter out = new StringWriter();

             List<String> options = Arrays.asList("-XDrawDiagnostics", "-XDshouldStopPolicy=FLOW");

             JavacTask task = (JavacTask) compiler.getTask(out, null, null, options, null, files);

             new TreePathScanner<Void, Void>() {

                 boolean seenAnnotation;

                 @Override

                 public Void visitAnnotation(AnnotationTree node, Void p) {

                     Name name = ((IdentifierTree) node.getAnnotationType()).getName();

                     seenAnnotation |= name.contentEquals("TA") || name.contentEquals("DA");

                     return null;

                 }

                 @Override

                 public Void visitCompilationUnit(CompilationUnitTree node, Void p) {

                     super.visitCompilationUnit(node, p);

                     if (!seenAnnotation)

                         error(test, "Annotation was missing");

                     return null;

                 }

             }.scan(task.parse(), null);

             task.analyze();

             if (!tc.error.equals(out.toString().trim())) {

                 error(test, "Incorrect errors: " + out.toString());

             }

         }

         if (errors > 0) {

             throw new IllegalStateException("Errors found");

         }

     }

     int errors;

     void error(String code, String error) {

         System.out.println("Error detected: " + error);

         System.out.println("Code:");

         System.out.println(code);

         errors++;

     }

     static String TEMPLATE =

         "import java.lang.annotation.*;\n" +

         "public class Test {\n" +

         "    CONTENT\n" +

         "}\n" +

         "@Target({ElementType.METHOD, ElementType.CONSTRUCTOR})\n" +

         "@interface DA { }\n" +

         "@Target(ElementType.TYPE_USE)\n" +

         "@interface TA { }\n";

     static class MyFileObject extends SimpleJavaFileObject {

         final String text;

         public MyFileObject(String text) {

             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

             this.text = text;

         }

         @Override

         public CharSequence getCharContent(boolean ignoreEncodingErrors) {

             return text;

         }

     }

     static TestCase[] testCases = new TestCase[] {

         new TestCase("<T> @DA int foo1() { return 0;}", ""),

         new TestCase("<T> @DA void foo2() { }", ""),

         new TestCase("<T> @TA int foo3() { return 0;}", ""),

         new TestCase("<T> @TA void foo4() { }",

                 "Test.java:3:9: compiler.err.annotation.type.not.applicable"),

         new TestCase("<T> @DA Test() { }", "Test.java:3:9: compiler.err.illegal.start.of.type"),

         new TestCase("<T> @TA Test() { }", "Test.java:3:9: compiler.err.illegal.start.of.type"),

     };

     static class TestCase {

         final String snippet;

         final String error;

         public TestCase(String snippet, String error) {

             this.snippet = snippet;

             this.error = error;

         }

     }

 }