1 /*
   2  * Copyright (c) 2017, 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.hotspot;
  24 
  25 import jdk.vm.ci.meta.JavaConstant;
  26 
  27 /**
  28  * Represents a constant that was retrieved from a constant pool. Used to keep track of the constant
  29  * pool slot for the constant.
  30  */
  31 public final class HotSpotConstantPoolObject extends HotSpotObjectConstantImpl {
  32 
  33     static JavaConstant forObject(HotSpotResolvedObjectType type, int cpi, Object object) {
  34         return new HotSpotConstantPoolObject(type, cpi, object);
  35     }
  36 
  37     public static JavaConstant forObject(HotSpotResolvedObjectType type, int cpi, JavaConstant object) {
  38         return forObject(type, cpi, ((HotSpotObjectConstantImpl) object).object());
  39     }
  40 
  41     private final HotSpotResolvedObjectType type;
  42     private final int cpi;
  43 
  44     public HotSpotResolvedObjectType getCpType() {
  45         return type;
  46     }
  47 
  48     public int getCpi() {
  49         return cpi;
  50     }
  51 
  52     HotSpotConstantPoolObject(HotSpotResolvedObjectType type, int cpi, Object object) {
  53         super(object, false);
  54         this.type = type;
  55         this.cpi = cpi;
  56     }
  57 
  58     @Override
  59     public boolean equals(Object o) {
  60         if (o instanceof HotSpotConstantPoolObject) {
  61             if (super.equals(o)) {
  62                 HotSpotConstantPoolObject other = (HotSpotConstantPoolObject) o;
  63                 return type == other.type && cpi == other.cpi;
  64             }
  65         }
  66         return false;
  67     }
  68 
  69     @Override
  70     public String toValueString() {
  71         return getCpType().getName() + getCpi();
  72     }
  73 
  74     @Override
  75     public String toString() {
  76         return super.toString() + "@" + toValueString();
  77     }
  78 
  79 }