1 /*
   2  * Copyright (c) 2014, 2016, 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
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9" | os.simpleArch == "aarch64")
  27  * @modules jdk.vm.ci/jdk.vm.ci.meta
  28  *          jdk.vm.ci/jdk.vm.ci.runtime
  29  * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI jdk.vm.ci.runtime.test.ResolvedJavaTypeResolveConcreteMethodTest
  30  */
  31 
  32 package jdk.vm.ci.runtime.test;
  33 
  34 import static org.junit.Assert.assertEquals;
  35 import static org.junit.Assert.assertNull;
  36 import jdk.vm.ci.meta.MetaAccessProvider;
  37 import jdk.vm.ci.meta.ResolvedJavaMethod;
  38 import jdk.vm.ci.meta.ResolvedJavaType;
  39 import jdk.vm.ci.runtime.JVMCI;
  40 
  41 import org.junit.Test;
  42 
  43 public class ResolvedJavaTypeResolveConcreteMethodTest {
  44     public final MetaAccessProvider metaAccess;
  45 
  46     public ResolvedJavaTypeResolveConcreteMethodTest() {
  47         metaAccess = JVMCI.getRuntime().getHostJVMCIBackend().getMetaAccess();
  48     }
  49 
  50     protected abstract static class A {
  51         @SuppressWarnings("unused")
  52         private void priv() {
  53         }
  54 
  55         public void v1() {
  56         }
  57 
  58         public void v2() {
  59         }
  60 
  61         public abstract void abs();
  62     }
  63 
  64     protected static class B extends A implements I {
  65         public void i() {
  66         }
  67 
  68         @Override
  69         public void v2() {
  70         }
  71 
  72         @Override
  73         public void abs() {
  74 
  75         }
  76     }
  77 
  78     protected static class C extends B {
  79         public void d() {
  80         }
  81     }
  82 
  83     protected abstract static class D extends A {
  84 
  85     }
  86 
  87     protected static class E extends D {
  88         @Override
  89         public void abs() {
  90         }
  91     }
  92 
  93     protected interface I {
  94         void i();
  95 
  96         default void d() {
  97         }
  98     }
  99 
 100     @Test
 101     public void testDefaultMethod() {
 102         ResolvedJavaType i = getType(I.class);
 103         ResolvedJavaType b = getType(B.class);
 104         ResolvedJavaType c = getType(C.class);
 105         ResolvedJavaMethod di = getMethod(i, "d");
 106         ResolvedJavaMethod dc = getMethod(c, "d");
 107 
 108         assertEquals(null, i.resolveConcreteMethod(di, c));
 109         assertEquals(di, b.resolveConcreteMethod(di, c));
 110         assertEquals(dc, c.resolveConcreteMethod(di, c));
 111     }
 112 
 113     @Test
 114     public void testPrivateMethod() {
 115         ResolvedJavaType a = getType(A.class);
 116         ResolvedJavaType b = getType(B.class);
 117         ResolvedJavaType c = getType(C.class);
 118         ResolvedJavaMethod priv = getMethod(a, "priv");
 119 
 120         assertNull(a.resolveConcreteMethod(priv, c));
 121         assertNull(b.resolveConcreteMethod(priv, c));
 122     }
 123 
 124     @Test
 125     public void testAbstractMethod() {
 126         ResolvedJavaType a = getType(A.class);
 127         ResolvedJavaType b = getType(B.class);
 128         ResolvedJavaType c = getType(C.class);
 129         ResolvedJavaType d = getType(D.class);
 130         ResolvedJavaType e = getType(E.class);
 131         ResolvedJavaMethod absa = getMethod(a, "abs");
 132         ResolvedJavaMethod absb = getMethod(b, "abs");
 133         ResolvedJavaMethod abse = getMethod(e, "abs");
 134 
 135         assertNull(a.resolveConcreteMethod(absa, c));
 136         assertNull(d.resolveConcreteMethod(absa, c));
 137 
 138         assertEquals(absb, b.resolveConcreteMethod(absa, c));
 139         assertEquals(absb, b.resolveConcreteMethod(absb, c));
 140         assertEquals(absb, c.resolveConcreteMethod(absa, c));
 141         assertEquals(absb, c.resolveConcreteMethod(absb, c));
 142         assertEquals(abse, e.resolveConcreteMethod(absa, c));
 143         assertNull(e.resolveConcreteMethod(absb, c));
 144         assertEquals(abse, e.resolveConcreteMethod(abse, c));
 145     }
 146 
 147     @Test
 148     public void testVirtualMethod() {
 149         ResolvedJavaType a = getType(A.class);
 150         ResolvedJavaType b = getType(B.class);
 151         ResolvedJavaType c = getType(C.class);
 152         ResolvedJavaMethod v1a = getMethod(a, "v1");
 153         ResolvedJavaMethod v2a = getMethod(a, "v2");
 154         ResolvedJavaMethod v2b = getMethod(b, "v2");
 155 
 156         assertEquals(v1a, a.resolveConcreteMethod(v1a, c));
 157         assertEquals(v1a, b.resolveConcreteMethod(v1a, c));
 158         assertEquals(v1a, c.resolveConcreteMethod(v1a, c));
 159         assertEquals(v2a, a.resolveConcreteMethod(v2a, c));
 160         assertEquals(v2b, b.resolveConcreteMethod(v2a, c));
 161         assertEquals(v2b, b.resolveConcreteMethod(v2b, c));
 162         assertEquals(v2b, c.resolveConcreteMethod(v2a, c));
 163         assertEquals(v2b, c.resolveConcreteMethod(v2b, c));
 164 
 165     }
 166 
 167     static ResolvedJavaMethod getMethod(ResolvedJavaType type, String methodName) {
 168         for (ResolvedJavaMethod method : type.getDeclaredMethods()) {
 169             if (method.getName().equals(methodName)) {
 170                 return method;
 171             }
 172         }
 173         throw new IllegalArgumentException();
 174     }
 175 
 176     protected ResolvedJavaType getType(Class<?> clazz) {
 177         ResolvedJavaType type = metaAccess.lookupJavaType(clazz);
 178         type.initialize();
 179         return type;
 180     }
 181 }