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.  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 java.lang;
  27 
  28 /**
  29  * A helper class to get access to package-private members
  30  */
  31 public class Helper {
  32     @jdk.internal.vm.annotation.ForceInline
  33     public static boolean StringCodingHasNegatives(byte[] ba, int off, int len) {
  34         return StringCoding.hasNegatives(ba, off, len);
  35     }
  36 
  37     @jdk.internal.vm.annotation.ForceInline
  38     public static byte[] compressByte(byte[] src, int srcOff, int dstSize, int dstOff, int len) {
  39         byte[] dst = new byte[dstSize];
  40         StringUTF16.compress(src, srcOff, dst, dstOff, len);
  41         return dst;
  42     }
  43 
  44     @jdk.internal.vm.annotation.ForceInline
  45     public static byte[] compressChar(char[] src, int srcOff, int dstSize, int dstOff, int len) {
  46         byte[] dst = new byte[dstSize];
  47         StringUTF16.compress(src, srcOff, dst, dstOff, len);
  48         return dst;
  49     }
  50 
  51     @jdk.internal.vm.annotation.ForceInline
  52     public static byte[] inflateByte(byte[] src, int srcOff, int dstSize, int dstOff, int len) {
  53         byte[] dst = new byte[dstSize];
  54         StringLatin1.inflate(src, srcOff, dst, dstOff, len);
  55         return dst;
  56     }
  57 
  58     @jdk.internal.vm.annotation.ForceInline
  59     public static char[] inflateChar(byte[] src, int srcOff, int dstSize, int dstOff, int len) {
  60         char[] dst = new char[dstSize];
  61         StringLatin1.inflate(src, srcOff, dst, dstOff, len);
  62         return dst;
  63     }
  64 
  65     @jdk.internal.vm.annotation.ForceInline
  66     public static byte[] toBytes(char[] value, int off, int len) {
  67         return StringUTF16.toBytes(value, off, len);
  68     }
  69 
  70     @jdk.internal.vm.annotation.ForceInline
  71     public static char[] getChars(byte[] value, int srcBegin, int srcEnd, int dstSize, int dstBegin) {
  72         char[] dst = new char[dstSize];
  73         StringUTF16.getChars(value, srcBegin, srcEnd, dst, dstBegin);
  74         return dst;
  75     }
  76 }