jjg@480: /*
jjg@480:  * Copyright 2009-2010 Sun Microsystems, Inc.  All Rights Reserved.
jjg@480:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@480:  *
jjg@480:  * This code is free software; you can redistribute it and/or modify it
jjg@480:  * under the terms of the GNU General Public License version 2 only, as
jjg@480:  * published by the Free Software Foundation.
jjg@480:  *
jjg@480:  * This code is distributed in the hope that it will be useful, but WITHOUT
jjg@480:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@480:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jjg@480:  * version 2 for more details (a copy is included in the LICENSE file that
jjg@480:  * accompanied this code).
jjg@480:  *
jjg@480:  * You should have received a copy of the GNU General Public License version
jjg@480:  * 2 along with this work; if not, write to the Free Software Foundation,
jjg@480:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@480:  *
jjg@480:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
jjg@480:  * CA 95054 USA or visit www.sun.com if you need additional information or
jjg@480:  * have any questions.
jjg@480:  */
jjg@480: 
jjg@480: import java.io.*;
jjg@480: import java.net.URL;
jjg@480: import java.util.List;
jjg@480: 
jjg@480: import com.sun.tools.classfile.*;
jjg@480: 
jjg@480: /*
jjg@480:  * @test
jjg@480:  * @bug 6917130
jjg@480:  * @summary test that optimized away annotations are not emited to classfile
jjg@480:  */
jjg@480: 
jjg@480: public class DeadCode {
jjg@480:     public static void main(String[] args) throws Exception {
jjg@480:         new DeadCode().run();
jjg@480:     }
jjg@480: 
jjg@480:     public void run() throws Exception {
jjg@480:         ClassFile cf = getClassFile("DeadCode$Test.class");
jjg@480:         test(cf);
jjg@480:         for (Field f : cf.fields) {
jjg@480:             test(cf, f);
jjg@480:         }
jjg@480:         for (Method m: cf.methods) {
jjg@480:             test(cf, m);
jjg@480:         }
jjg@480: 
jjg@480:         countAnnotations();
jjg@480: 
jjg@480:         if (errors > 0)
jjg@480:             throw new Exception(errors + " errors found");
jjg@480:         System.out.println("PASSED");
jjg@480:     }
jjg@480: 
jjg@480:     ClassFile getClassFile(String name) throws IOException, ConstantPoolException {
jjg@480:         URL url = getClass().getResource(name);
jjg@480:         InputStream in = url.openStream();
jjg@480:         try {
jjg@480:             return ClassFile.read(in);
jjg@480:         } finally {
jjg@480:             in.close();
jjg@480:         }
jjg@480:     }
jjg@480: 
jjg@480:     /************ Helper annotations counting methods ******************/
jjg@480:     void test(ClassFile cf) {
jjg@480:         test(cf, Attribute.RuntimeVisibleTypeAnnotations, true);
jjg@480:         test(cf, Attribute.RuntimeInvisibleTypeAnnotations, false);
jjg@480:     }
jjg@480: 
jjg@480:     void test(ClassFile cf, Method m) {
jjg@480:         test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);
jjg@480:         test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);
jjg@480:     }
jjg@480: 
jjg@480:     void test(ClassFile cf, Field m) {
jjg@480:         test(cf, m, Attribute.RuntimeVisibleTypeAnnotations, true);
jjg@480:         test(cf, m, Attribute.RuntimeInvisibleTypeAnnotations, false);
jjg@480:     }
jjg@480: 
jjg@480:     // test the result of Attributes.getIndex according to expectations
jjg@480:     // encoded in the method's name
jjg@480:     void test(ClassFile cf, String name, boolean visible) {
jjg@480:         int index = cf.attributes.getIndex(cf.constant_pool, name);
jjg@480:         if (index != -1) {
jjg@480:             Attribute attr = cf.attributes.get(index);
jjg@480:             assert attr instanceof RuntimeTypeAnnotations_attribute;
jjg@480:             RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
jjg@480:             all += tAttr.annotations.length;
jjg@480:             if (visible)
jjg@480:                 visibles += tAttr.annotations.length;
jjg@480:             else
jjg@480:                 invisibles += tAttr.annotations.length;
jjg@480:         }
jjg@480:     }
jjg@480: 
jjg@480:     // test the result of Attributes.getIndex according to expectations
jjg@480:     // encoded in the method's name
jjg@480:     void test(ClassFile cf, Method m, String name, boolean visible) {
jjg@480:         int index = m.attributes.getIndex(cf.constant_pool, name);
jjg@480:         if (index != -1) {
jjg@480:             Attribute attr = m.attributes.get(index);
jjg@480:             assert attr instanceof RuntimeTypeAnnotations_attribute;
jjg@480:             RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
jjg@480:             all += tAttr.annotations.length;
jjg@480:             if (visible)
jjg@480:                 visibles += tAttr.annotations.length;
jjg@480:             else
jjg@480:                 invisibles += tAttr.annotations.length;
jjg@480:         }
jjg@480:     }
jjg@480: 
jjg@480:     // test the result of Attributes.getIndex according to expectations
jjg@480:     // encoded in the method's name
jjg@480:     void test(ClassFile cf, Field m, String name, boolean visible) {
jjg@480:         int index = m.attributes.getIndex(cf.constant_pool, name);
jjg@480:         if (index != -1) {
jjg@480:             Attribute attr = m.attributes.get(index);
jjg@480:             assert attr instanceof RuntimeTypeAnnotations_attribute;
jjg@480:             RuntimeTypeAnnotations_attribute tAttr = (RuntimeTypeAnnotations_attribute)attr;
jjg@480:             all += tAttr.annotations.length;
jjg@480:             if (visible)
jjg@480:                 visibles += tAttr.annotations.length;
jjg@480:             else
jjg@480:                 invisibles += tAttr.annotations.length;
jjg@480:         }
jjg@480:     }
jjg@480: 
jjg@480:     void countAnnotations() {
jjg@480:         int expected_all = expected_visibles + expected_invisibles;
jjg@480: 
jjg@480:         if (expected_all != all) {
jjg@480:             errors++;
jjg@480:             System.err.println("expected " + expected_all
jjg@480:                     + " annotations but found " + all);
jjg@480:         }
jjg@480: 
jjg@480:         if (expected_visibles != visibles) {
jjg@480:             errors++;
jjg@480:             System.err.println("expected " + expected_visibles
jjg@480:                     + " visibles annotations but found " + visibles);
jjg@480:         }
jjg@480: 
jjg@480:         if (expected_invisibles != invisibles) {
jjg@480:             errors++;
jjg@480:             System.err.println("expected " + expected_invisibles
jjg@480:                     + " invisibles annotations but found " + invisibles);
jjg@480:         }
jjg@480: 
jjg@480:     }
jjg@480: 
jjg@480:     int errors;
jjg@480:     int all;
jjg@480:     int visibles;
jjg@480:     int invisibles;
jjg@480: 
jjg@480:     /*********************** Test class *************************/
jjg@480:     static int expected_invisibles = 1;
jjg@480:     static int expected_visibles = 0;
jjg@480:     static class Test {
jjg@480:         @interface A {}
jjg@480: 
jjg@480:         void test() {
jjg@480:             List<? extends @A Object> o = null;
jjg@480:             o.toString();
jjg@480: 
jjg@480:             @A String m;
jjg@480:             if (false) {
jjg@480:                 @A String a;
jjg@480:                 @A String b = "m";
jjg@480:                 b.toString();
jjg@480:                 List<? extends @A Object> c = null;
jjg@480:                 c.toString();
jjg@480:             }
jjg@480:         }
jjg@480:     }
jjg@480: 
jjg@480: }