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 that the interaction between annotated and unannotated

   *         array levels in array creation trees

  */

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

 import com.sun.tools.javac.tree.JCTree.JCNewArray;

 import java.lang.annotation.*;

 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 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 ArrayCreationTree {

     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, "ArrayCreationTree.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> {

         int foundAnnotations = 0;

         public Void visitCompilationUnit(CompilationUnitTree node, Void ignore) {

             super.visitCompilationUnit(node, ignore);

             if (foundAnnotations != expectedAnnotations) {

                 throw new AssertionError("Expected " + expectedAnnotations +

                         " annotations but found: " + foundAnnotations);

             }

             return null;

         }

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

             if (annos.isEmpty()) return;

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

             foundAnnotations++;

             int expected = -1;

             if (annotation.equals("@A()"))

                 expected = 0;

             else if (annotation.equals("@B()"))

                 expected = 1;

             else if (annotation.equals("@C()"))

                 expected = 2;

             else

                 throw new AssertionError("found an unexpected annotation: " + annotation);

             if (found != expected) {

                 throw new AssertionError("Unexpected found length" +

                     ", found " + found + " but expected " + expected);

             }

         }

         public Void visitAnnotatedType(AnnotatedTypeTree node, Void ignore) {

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

             return super.visitAnnotatedType(node, ignore);

         }

         public Void visitNewArray(NewArrayTree node, Void ignore) {

             // the Tree API hasn't been updated to expose annotations yet

             JCNewArray newArray = (JCNewArray)node;

             int totalLength = node.getDimensions().size()

                                 + arrayLength(node.getType())

                                 + ((newArray.getInitializers() != null) ? 1 : 0);

             testAnnotations(newArray.annotations, totalLength);

             int count = 0;

             for (List<? extends AnnotationTree> annos : newArray.dimAnnotations) {

                 testAnnotations(annos, totalLength - count);

                 count++;

             }

             return super.visitNewArray(node, ignore);

         }

         private int arrayLength(Tree tree) {

             // TODO: the tree is null when called with node.getType(). Why?

             if (tree==null) return -1;

             switch (tree.getKind()) {

             case ARRAY_TYPE:

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

             case ANNOTATED_TYPE:

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

             default:

                 return 0;

             }

         }

     }

     static int expectedAnnotations = 21;

     Object a1 = new @A Object @C [2] @B [1];

     Object b1 = new @A Object @C [2] @B [ ];

     Object c1 = new @A Object @C [ ] @B [ ] { };

     Object a2 = new @A Object @C [2]    [1];

     Object b2 = new @A Object @C [2]    [ ];

     Object c2 = new @A Object @C [ ]    [ ] { };

     Object a3 = new @A Object    [2] @B [1];

     Object b3 = new @A Object    [2] @B [ ];

     Object c3 = new @A Object    [ ] @B [ ] { };

     @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 {}

 }