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

 /*

  * Copyright (c) 2010, 2013, 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

  * @summary Checks the annotation types targeting array types

  */

 import com.sun.tools.javac.api.JavacTool;

 import java.io.File;

 import java.io.PrintWriter;

 import java.util.Arrays;

 import java.util.List;

 import java.util.Map;

 import java.util.HashMap;

 import java.lang.annotation.*;

 import javax.tools.JavaFileManager;

 import javax.tools.JavaFileObject;

 import com.sun.source.tree.*;

 import com.sun.source.util.JavacTask;

 import com.sun.source.util.TreeScanner;

 import javax.tools.StandardJavaFileManager;

 public class AnnotatedArrayOrder {

     public static void main(String[] args) throws Exception {

         PrintWriter out = new PrintWriter(System.out, true);

         JavacTool tool = JavacTool.create();

         StandardJavaFileManager fm = tool.getStandardFileManager(null, null, null);

         File testSrc = new File(System.getProperty("test.src"));

         Iterable<? extends JavaFileObject> f =

             fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, "AnnotatedArrayOrder.java")));

         JavacTask task = tool.getTask(out, fm, null, null, null, f);

         Iterable<? extends CompilationUnitTree> trees = task.parse();

         out.flush();

         Scanner s = new Scanner();

         for (CompilationUnitTree t: trees)

             s.scan(t, null);

     }

     private static class Scanner extends TreeScanner<Void,Void> {

         public Void visitCompilationUnit(CompilationUnitTree node, Void ignore) {

             super.visitCompilationUnit(node, ignore);

             if (!expectedLocations.isEmpty()) {

                 throw new AssertionError("Didn't found all annotations: " + expectedLocations);

             }

             return null;

         }

         private void testAnnotations(List<? extends AnnotationTree> annos, int found) {

             String annotation = annos.get(0).toString();

             if (!expectedLocations.containsKey(annotation))

                 throw new AssertionError("Found unexpected annotation: " + annotation + expectedLocations);

             int expected = expectedLocations.get(annotation);

             if (found != expected)

                 throw new AssertionError("The expected array length for this error doesn't match");

             expectedLocations.remove(annotation);

         }

         public Void visitAnnotatedType(AnnotatedTypeTree node, Void ignore) {

             testAnnotations(node.getAnnotations(), arrayLength(node));

             return super.visitAnnotatedType(node, ignore);

         }

         private int arrayLength(Tree tree) {

             switch (tree.getKind()) {

             case ARRAY_TYPE:

                 return 1 + arrayLength(((ArrayTypeTree)tree).getType());

             case ANNOTATED_TYPE:

                 return arrayLength(((AnnotatedTypeTree)tree).getUnderlyingType());

             default:

                 return 0;

             }

         }

     }

     // expectedLocations values:

     static Map<String, Integer> expectedLocations = new HashMap<String, Integer>();

     // visited code

     @A String @C [] @B [] field;

     static {

         // Shouldn't find @A(), as it is field annotation

         expectedLocations.put("@B()", 1);

         expectedLocations.put("@C()", 2);

     }

     List<@D String @F [] @E []> typearg;

     static {

         expectedLocations.put("@D()", 0);

         expectedLocations.put("@E()", 1);

         expectedLocations.put("@F()", 2);

     }

     void varargSimple(@G String @H ... vararg1) { }

     static {

         // Shouldn't find @G(), as it is a parameter annotation

         expectedLocations.put("@H()", 1);

     }

     void varargLong(@I String @L [] @K [] @J ... vararg2) { }

     static {

         // Shouldn't find @I(), as it is a parameter annotation

         expectedLocations.put("@J()", 1);

         expectedLocations.put("@K()", 2);

         expectedLocations.put("@L()", 3);

     }

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface A {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface B {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface C {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface D {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface E {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface F {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface G {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface H {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface I {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface J {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface K {}

     @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})

     @interface L {}

 }