Java tutorial
/* * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package java.lang; /** * A helper class to get access to package-private members */ public class Helper { @jdk.internal.vm.annotation.ForceInline public static boolean StringCodingHasNegatives(byte[] ba, int off, int len) { return StringCoding.hasNegatives(ba, off, len); } @jdk.internal.vm.annotation.ForceInline public static byte[] compressByte(byte[] src, int srcOff, int dstSize, int dstOff, int len) { byte[] dst = new byte[dstSize]; StringUTF16.compress(src, srcOff, dst, dstOff, len); return dst; } @jdk.internal.vm.annotation.ForceInline public static byte[] compressChar(char[] src, int srcOff, int dstSize, int dstOff, int len) { byte[] dst = new byte[dstSize]; StringUTF16.compress(src, srcOff, dst, dstOff, len); return dst; } @jdk.internal.vm.annotation.ForceInline public static byte[] inflateByte(byte[] src, int srcOff, int dstSize, int dstOff, int len) { byte[] dst = new byte[dstSize]; StringLatin1.inflate(src, srcOff, dst, dstOff, len); return dst; } @jdk.internal.vm.annotation.ForceInline public static char[] inflateChar(byte[] src, int srcOff, int dstSize, int dstOff, int len) { char[] dst = new char[dstSize]; StringLatin1.inflate(src, srcOff, dst, dstOff, len); return dst; } @jdk.internal.vm.annotation.ForceInline public static byte[] toBytes(char[] value, int off, int len) { return StringUTF16.toBytes(value, off, len); } @jdk.internal.vm.annotation.ForceInline public static char[] getChars(byte[] value, int srcBegin, int srcEnd, int dstSize, int dstBegin) { char[] dst = new char[dstSize]; StringUTF16.getChars(value, srcBegin, srcEnd, dst, dstBegin); return dst; } public static void putCharSB(byte[] val, int index, int c) { StringUTF16.putCharSB(val, index, c); } public static void putCharsSB(byte[] val, int index, char[] ca, int off, int end) { StringUTF16.putCharsSB(val, index, ca, off, end); } public static void putCharsSB(byte[] val, int index, CharSequence s, int off, int end) { StringUTF16.putCharsSB(val, index, s, off, end); } public static int codePointAtSB(byte[] val, int index, int end) { return StringUTF16.codePointAtSB(val, index, end); } public static int codePointBeforeSB(byte[] val, int index) { return StringUTF16.codePointBeforeSB(val, index); } public static int codePointCountSB(byte[] val, int beginIndex, int endIndex) { return StringUTF16.codePointCountSB(val, beginIndex, endIndex); } public static int getChars(int i, int begin, int end, byte[] value) { return StringUTF16.getChars(i, begin, end, value); } public static int getChars(long l, int begin, int end, byte[] value) { return StringUTF16.getChars(l, begin, end, value); } public static boolean contentEquals(byte[] v1, byte[] v2, int len) { return StringUTF16.contentEquals(v1, v2, len); } public static boolean contentEquals(byte[] value, CharSequence cs, int len) { return StringUTF16.contentEquals(value, cs, len); } public static int putCharsAt(byte[] value, int i, char c1, char c2, char c3, char c4) { return StringUTF16.putCharsAt(value, i, c1, c2, c3, c4); } public static int putCharsAt(byte[] value, int i, char c1, char c2, char c3, char c4, char c5) { return StringUTF16.putCharsAt(value, i, c1, c2, c3, c4, c5); } public static char charAt(byte[] value, int index) { return StringUTF16.charAt(value, index); } public static void reverse(byte[] value, int count) { StringUTF16.reverse(value, count); } public static void inflate(byte[] src, int srcOff, byte[] dst, int dstOff, int len) { StringUTF16.inflate(src, srcOff, dst, dstOff, len); } public static int indexOf(byte[] src, int srcCount, byte[] tgt, int tgtCount, int fromIndex) { return StringUTF16.indexOf(src, srcCount, tgt, tgtCount, fromIndex); } public static int indexOfLatin1(byte[] src, int srcCount, byte[] tgt, int tgtCount, int fromIndex) { return StringUTF16.indexOfLatin1(src, srcCount, tgt, tgtCount, fromIndex); } public static int lastIndexOf(byte[] src, byte[] tgt, int tgtCount, int fromIndex) { int srcCount = StringUTF16.length(src); // ignored return StringUTF16.lastIndexOf(src, srcCount, tgt, tgtCount, fromIndex); } public static int lastIndexOfLatin1(byte[] src, byte[] tgt, int tgtCount, int fromIndex) { int srcCount = StringUTF16.length(src); // ignored return StringUTF16.lastIndexOfLatin1(src, srcCount, tgt, tgtCount, fromIndex); } }