mirror of
https://github.com/openjdk/jdk.git
synced 2026-02-28 03:00:41 +00:00
71 lines
2.8 KiB
Java
71 lines
2.8 KiB
Java
/*
|
|
* Copyright (c) 2025, 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.
|
|
*/
|
|
|
|
/*
|
|
* @test
|
|
* @bug 8358066
|
|
* @summary Test for bug in Convert.utfNumChars()
|
|
* @modules jdk.compiler/com.sun.tools.javac.util
|
|
* @run main TestUtfNumChars
|
|
*/
|
|
|
|
import com.sun.tools.javac.util.Convert;
|
|
|
|
import java.util.function.IntPredicate;
|
|
import java.util.stream.IntStream;
|
|
|
|
public class TestUtfNumChars {
|
|
|
|
public static void main(String[] args) {
|
|
|
|
// This is the string "ab«cd≤ef🟢gh"
|
|
String s = "ab\u00ABcd\u2264ef\ud83d\udd34gh";
|
|
|
|
// This is its modified UTF-8 encoding
|
|
byte[] utf8 = Convert.string2utf(s); // UTF-8: 61 62 c2 ab 63 64 e2 89 a4 65 66 ed a0 bd ed b4 b4 67 68
|
|
// Bytes: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18
|
|
// Chars: 00 01 02 .. 03 04 05 .. .. 06 07 08 .. .. 09 .. .. 10 11
|
|
|
|
// These are the offsets in "utf8" marking the boundaries of encoded Java charcters
|
|
int[] offsets = new int[] {
|
|
0, 1, 2, 4, 5, 6, 9, 10, 11, 14, 17, 18
|
|
};
|
|
IntPredicate boundary = off -> off == utf8.length || IntStream.of(offsets).anyMatch(off2 -> off2 == off);
|
|
|
|
// Check Convert.utfNumChars() on every subsequence
|
|
for (int i = 0; i < offsets.length; i++) {
|
|
int i_off = offsets[i];
|
|
if (!boundary.test(i_off))
|
|
continue;
|
|
for (int j = i; j < offsets.length; j++) {
|
|
int j_off = offsets[j];
|
|
if (!boundary.test(j_off))
|
|
continue;
|
|
int nchars = Convert.utfNumChars(utf8, i_off, j_off - i_off);
|
|
if (nchars != j - i)
|
|
throw new AssertionError(String.format("nchars %d != %d for [%d, %d)", nchars, j - i, i_off, j_off));
|
|
}
|
|
}
|
|
}
|
|
}
|