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src/java.base/share/classes/jdk/internal/icu/text/UTF16.java

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rev 57619 : imported patch 8174270
   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.  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  *******************************************************************************
  27  * Copyright (C) 1996-2014, International Business Machines Corporation and
  28  * others. All Rights Reserved.
  29  *******************************************************************************
  30  */
  31 
  32 package sun.text.normalizer;


  33 
  34 /**
  35  * <p>Standalone utility class providing UTF16 character conversions and
  36  * indexing conversions.
  37  * <p>Code that uses strings alone rarely need modification.
  38  * By design, UTF-16 does not allow overlap, so searching for strings is a safe
  39  * operation. Similarly, concatenation is always safe. Substringing is safe if
  40  * the start and end are both on UTF-32 boundaries. In normal code, the values
  41  * for start and end are on those boundaries, since they arose from operations
  42  * like searching. If not, the nearest UTF-32 boundaries can be determined
  43  * using <code>bounds()</code>.
  44  * <strong>Examples:</strong>
  45  * <p>The following examples illustrate use of some of these methods.
  46  * <pre>{@code
  47  * // iteration forwards: Original
  48  * for (int i = 0; i < s.length(); ++i) {
  49  *     char ch = s.charAt(i);
  50  *     doSomethingWith(ch);
  51  * }
  52  *


   1 /*
   2  * Copyright (c) 2005, 2020, 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  *******************************************************************************
  27  * Copyright (C) 1996-2014, International Business Machines Corporation and
  28  * others. All Rights Reserved.
  29  *******************************************************************************
  30  */
  31 
  32 package jdk.internal.icu.text;
  33 
  34 import jdk.internal.icu.impl.UCharacterProperty;
  35 
  36 /**
  37  * <p>Standalone utility class providing UTF16 character conversions and
  38  * indexing conversions.
  39  * <p>Code that uses strings alone rarely need modification.
  40  * By design, UTF-16 does not allow overlap, so searching for strings is a safe
  41  * operation. Similarly, concatenation is always safe. Substringing is safe if
  42  * the start and end are both on UTF-32 boundaries. In normal code, the values
  43  * for start and end are on those boundaries, since they arose from operations
  44  * like searching. If not, the nearest UTF-32 boundaries can be determined
  45  * using <code>bounds()</code>.
  46  * <strong>Examples:</strong>
  47  * <p>The following examples illustrate use of some of these methods.
  48  * <pre>{@code
  49  * // iteration forwards: Original
  50  * for (int i = 0; i < s.length(); ++i) {
  51  *     char ch = s.charAt(i);
  52  *     doSomethingWith(ch);
  53  * }
  54  *


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