1 /*
   2  * Copyright (c) 2003, 2013, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.reflect.generics.reflectiveObjects;
  27 
  28 import java.lang.reflect.GenericArrayType;
  29 import java.lang.reflect.Type;
  30 import java.util.Objects;
  31 
  32 /**
  33  * Implementation of GenericArrayType interface for core reflection.
  34  */
  35 public class GenericArrayTypeImpl
  36     implements GenericArrayType {
  37     private final Type genericComponentType;
  38 
  39     // private constructor enforces use of static factory
  40     private GenericArrayTypeImpl(Type ct) {
  41         genericComponentType = ct;
  42     }
  43 
  44     /**
  45      * Factory method.
  46      * @param ct - the desired component type of the generic array type
  47      * being created
  48      * @return a generic array type with the desired component type
  49      */
  50     public static GenericArrayTypeImpl make(Type ct) {
  51         return new GenericArrayTypeImpl(ct);
  52     }
  53 
  54 
  55     /**
  56      * Returns a {@code Type} object representing the component type
  57      * of this array.
  58      *
  59      * @return a {@code Type} object representing the component type
  60      *     of this array
  61      * @since 1.5
  62      */
  63     public Type getGenericComponentType() {
  64         return genericComponentType; // return cached component type
  65     }
  66 
  67     public String toString() {
  68         return getGenericComponentType().getTypeName() + "[]";
  69     }
  70 
  71     @Override
  72     public boolean equals(Object o) {
  73         if (o instanceof GenericArrayType) {
  74             GenericArrayType that = (GenericArrayType) o;
  75 
  76             return Objects.equals(genericComponentType, that.getGenericComponentType());
  77         } else
  78             return false;
  79     }
  80 
  81     @Override
  82     public int hashCode() {
  83         return Objects.hashCode(genericComponentType);
  84     }
  85 }