1 /*
   2  * Copyright (c) 2005, 2015, 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 package jdk.test.lib.jittester;
  25 
  26 import jdk.test.lib.jittester.visitors.Visitor;
  27 
  28 /**
  29  * Type system's core..
  30  */
  31 public abstract class Type extends IRNode implements Comparable<Type> {
  32 
  33     private final String typeName;
  34 
  35     protected Type(String typeName) {
  36         super(null);
  37         this.typeName = typeName;
  38     }
  39 
  40     @Override
  41     public Type getResultType() {
  42         return this;
  43     }
  44 
  45     @Override
  46     public boolean equals(Object t) {
  47         if (this == t) {
  48             return true;
  49         }
  50         if (t == null || !(t instanceof Type)) {
  51             return false;
  52         }
  53         return typeName.equals(((Type) t).typeName);
  54     }
  55 
  56     @Override
  57     public int compareTo(Type t) {
  58         return typeName.compareTo(t.typeName);
  59     }
  60 
  61     @Override
  62     public int hashCode() {
  63         return typeName.hashCode();
  64     }
  65 
  66     public abstract boolean canImplicitlyCastTo(Type t);
  67 
  68     public abstract boolean canExplicitlyCastTo(Type t);
  69 
  70     public abstract boolean canCompareTo(Type t);
  71 
  72     public abstract boolean canEquateTo(Type t);
  73 
  74     protected void exportSymbols() {
  75     }
  76 
  77     @Override
  78     public<T> T accept(Visitor<T> v) {
  79         return v.visit(this);
  80     }
  81 
  82     @Override
  83     public String getName() {
  84         return typeName;
  85     }
  86 }