jdk8-mips64-public/langtools: test/tools/javap/typeAnnotations/Wildcards.java@683b3e7e05a7

     1 /*

     2  * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

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    24 import java.io.*;

    25 import com.sun.tools.classfile.*;

    27 /*

    28  * @test Wildcards

    29  * @bug 6843077

    30  * @summary test that annotations target wildcards get emitted to classfile

    31  */

    32 public class Wildcards {

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

    34         new Wildcards().run();

    35     }

    37     public void run() throws Exception {

    38         File javaFile = writeTestFile();

    39         File classFile = compileTestFile(javaFile);

    41         ClassFile cf = ClassFile.read(classFile);

    42         test(cf);

    43         for (Field f : cf.fields) {

    44             test(cf, f);

    45         }

    46         for (Method m: cf.methods) {

    47             test(cf, m);

    48         }

    50         countAnnotations();

    52         if (errors > 0)

    53             throw new Exception(errors + " errors found");

    54         System.out.println("PASSED");

    55     }

    57     void test(ClassFile cf) {

    58         test(cf, Attribute.RuntimeVisibleTypeAnnotations, true);

    59         test(cf, Attribute.RuntimeInvisibleTypeAnnotations, false);

    60     }

    62     void test(ClassFile cf, Method m) {

    63         test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);

    64         test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);

    65     }

    67     void test(ClassFile cf, Field m) {

    68         test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);

    69         test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);

    70     }

    72     // test the result of Attributes.getIndex according to expectations

    73     // encoded in the method's name

    74     void test(ClassFile cf, String name, boolean visible) {

    75         int index = cf.attributes.getIndex(cf.constant_pool, name);

    76         if (index != -1) {

    77             Attribute attr = cf.attributes.get(index);

    78             assert attr instanceof RuntimeTypeAnnotations_attribute;

    79             RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;

    80             all += tAttr.annotations.length;

    81             if (visible)

    82                 visibles += tAttr.annotations.length;

    83             else

    84                 invisibles += tAttr.annotations.length;

    85         }

    86     }

    88     // test the result of Attributes.getIndex according to expectations

    89     // encoded in the method's name

    90     void test(ClassFile cf, Method m, String name, boolean visible) {

    91         int index = m.attributes.getIndex(cf.constant_pool, name);

    92         if (index != -1) {

    93             Attribute attr = m.attributes.get(index);

    94             assert attr instanceof RuntimeTypeAnnotations_attribute;

    95             RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;

    96             all += tAttr.annotations.length;

    97             if (visible)

    98                 visibles += tAttr.annotations.length;

    99             else

   100                 invisibles += tAttr.annotations.length;

   101         }

   102     }

   104     // test the result of Attributes.getIndex according to expectations

   105     // encoded in the method's name

   106     void test(ClassFile cf, Field m, String name, boolean visible) {

   107         int index = m.attributes.getIndex(cf.constant_pool, name);

   108         if (index != -1) {

   109             Attribute attr = m.attributes.get(index);

   110             assert attr instanceof RuntimeTypeAnnotations_attribute;

   111             RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;

   112             all += tAttr.annotations.length;

   113             if (visible)

   114                 visibles += tAttr.annotations.length;

   115             else

   116                 invisibles += tAttr.annotations.length;

   117         }

   118     }

   120     File writeTestFile() throws IOException {

   121       File f = new File("Test.java");

   122         PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));

   123         out.println("import java.lang.annotation.*;");

   124         out.println("import java.util.*;");

   125         out.println("class Test { ");

   126         out.println("  @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})");

   127         out.println("  @interface A { }");

   129         out.println("  List<? extends @A Number> f;");

   131         out.println("  List<? extends @A Object> test(List<? extends @A Number> p) {");

   132         out.println("    List<? extends @A Object> l;");    // not counted... gets optimized away

   133         out.println("    return null;");

   134         out.println(" }");

   135         out.println("}");

   137         out.close();

   138         return f;

   139     }

   141     File compileTestFile(File f) {

   142         int rc = com.sun.tools.javac.Main.compile(new String[] { "-source", "1.8", "-g", f.getPath() });

   143         if (rc != 0)

   144             throw new Error("compilation failed. rc=" + rc);

   145         String path = f.getPath();

   146         return new File(path.substring(0, path.length() - 5) + ".class");

   147     }

   149     void countAnnotations() {

   150         int expected_visibles = 0, expected_invisibles = 3;

   151         int expected_all = expected_visibles + expected_invisibles;

   153         if (expected_all != all) {

   154             errors++;

   155             System.err.println("expected " + expected_all

   156                     + " annotations but found " + all);

   157         }

   159         if (expected_visibles != visibles) {

   160             errors++;

   161             System.err.println("expected " + expected_visibles

   162                     + " visibles annotations but found " + visibles);

   163         }

   165         if (expected_invisibles != invisibles) {

   166             errors++;

   167             System.err.println("expected " + expected_invisibles

   168                     + " invisibles annotations but found " + invisibles);

   169         }

   171     }

   173     int errors;

   174     int all;

   175     int visibles;

   176     int invisibles;

   177 }

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