1 /*
   2  * Copyright (c) 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 package jdk.internal.nicl.types;
  25 
  26 import jdk.internal.nicl.Platform;
  27 
  28 public class Scalar implements Type {
  29     final char type;
  30     final Endianness endianness;
  31     final long size;
  32 
  33     private final static String noEndianness = "BVcxv";
  34 
  35     public Scalar(char type) {
  36         this(type, Endianness.NATIVE);
  37     }
  38 
  39     public Scalar(char type, Endianness endianness) {
  40         this.type = type;
  41         this.endianness = (noEndianness.indexOf(type) == -1) ?
  42                 Endianness.NATIVE : endianness;
  43         this.size = Platform.getInstance().getABI().definedSize(type);
  44     }
  45 
  46     public Scalar(char type, Endianness endianness, int bits) {
  47         this.type = type;
  48         this.size = ((bits & 7) != 0) ? (bits >> 3) + 1 : bits >> 3;
  49         this.endianness = (noEndianness.indexOf(type) != -1) ?
  50                 Endianness.NATIVE : endianness;
  51     }
  52 
  53     public Endianness getEndianness() {
  54         return endianness;
  55     }
  56 
  57     public char typeCode() {
  58         return type;
  59     }
  60 
  61     public boolean isSigned() {
  62         return Character.isLowerCase(type);
  63     }
  64 
  65     @Override
  66     public long getSize() {
  67         return size;
  68     }
  69 
  70     @Override
  71     public int hashCode() {
  72         return (type & 0xFF) | ((int) size << 8) | (endianness.ordinal() << 16);
  73     }
  74 
  75     @Override
  76     public boolean equals(Object o) {
  77         if (!(o instanceof jdk.internal.nicl.types.Scalar)) {
  78             return false;
  79         }
  80         jdk.internal.nicl.types.Scalar other = (jdk.internal.nicl.types.Scalar) o;
  81         if (type != other.type) {
  82             return false;
  83         }
  84         if (endianness != other.endianness) {
  85             return false;
  86         }
  87         if (size != other.size) {
  88             return false;
  89         }
  90         return true;
  91     }
  92 
  93     @Override
  94     public String toString() {
  95         StringBuffer sb = new StringBuffer();
  96         if (Endianness.NATIVE != endianness) {
  97             sb.append(endianness.modifier);
  98         }
  99         if (type == 'i' || type == 'f' || type == 'v' || type == 'I' || type == 'F') {
 100             sb.append('=');
 101             sb.append(size << 3);
 102         }
 103         sb.append(type);
 104         return sb.toString();
 105     }
 106 }
--- EOF ---