1 /*
   2  * Copyright (c) 2012, 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 package jdk.vm.ci.runtime.test;
  24 
  25 import jdk.vm.ci.meta.MetaAccessProvider;
  26 import jdk.vm.ci.meta.ResolvedJavaMethod;
  27 import jdk.vm.ci.meta.ResolvedJavaType;
  28 import jdk.vm.ci.meta.Signature;
  29 import jdk.vm.ci.runtime.JVMCI;
  30 
  31 import java.lang.reflect.Method;
  32 import java.util.Arrays;
  33 
  34 class NameAndSignature {
  35 
  36     public static final MetaAccessProvider metaAccess = JVMCI.getRuntime().getHostJVMCIBackend().getMetaAccess();
  37 
  38     final String name;
  39     final Class<?> returnType;
  40     final Class<?>[] parameterTypes;
  41 
  42     NameAndSignature(Method m) {
  43         this.name = m.getName();
  44         this.returnType = m.getReturnType();
  45         this.parameterTypes = m.getParameterTypes();
  46     }
  47 
  48     @Override
  49     public boolean equals(Object obj) {
  50         if (obj instanceof NameAndSignature) {
  51             NameAndSignature s = (NameAndSignature) obj;
  52             return s.returnType == returnType && name.equals(s.name) && Arrays.equals(s.parameterTypes, parameterTypes);
  53         }
  54         return false;
  55     }
  56 
  57     @Override
  58     public int hashCode() {
  59         return name.hashCode();
  60     }
  61 
  62     @Override
  63     public String toString() {
  64         StringBuilder sb = new StringBuilder(name + "(");
  65         String sep = "";
  66         for (Class<?> p : parameterTypes) {
  67             sb.append(sep);
  68             sep = ", ";
  69             sb.append(p.getName());
  70         }
  71         return sb.append(')').append(returnType.getName()).toString();
  72     }
  73 
  74     public boolean signatureEquals(ResolvedJavaMethod m) {
  75         Signature s = m.getSignature();
  76         ResolvedJavaType declaringClass = m.getDeclaringClass();
  77         if (!s.getReturnType(declaringClass).resolve(declaringClass).equals(metaAccess.lookupJavaType(returnType))) {
  78             return false;
  79         }
  80         if (s.getParameterCount(false) != parameterTypes.length) {
  81             return false;
  82         }
  83         for (int i = 0; i < parameterTypes.length; i++) {
  84             if (!s.getParameterType(i, declaringClass).resolve(declaringClass).equals(metaAccess.lookupJavaType(parameterTypes[i]))) {
  85                 return false;
  86             }
  87         }
  88         return true;
  89     }
  90 }