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8326653: Remove jdk.internal.reflect.UTF8

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Reviewed-by: rriggs, alanb
This commit is contained in:
Claes Redestad 2024-02-26 15:30:21 +00:00
parent bb6b04897b
commit c042f08632
2 changed files with 3 additions and 79 deletions
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6
src/java.base/share/classes/jdk/internal/reflect/ClassFileAssembler.java
View file

@ -25,6 +25,8 @@
package jdk.internal.reflect;
import sun.nio.cs.UTF_8;
class ClassFileAssembler implements ClassFileConstants {
private ByteVector vec;
private short cpIdx = 0;
@ -98,9 +100,7 @@ class ClassFileAssembler implements ClassFileConstants {
}
public void emitConstantPoolUTF8(String str) {
// NOTE: can not use str.getBytes("UTF-8") here because of
// bootstrapping issues with the character set converters.
byte[] bytes = UTF8.encode(str);
byte[] bytes = str.getBytes(UTF_8.INSTANCE);
emitByte(CONSTANT_Utf8);
emitShort((short) bytes.length);
for (int i = 0; i < bytes.length; i++) {

76
src/java.base/share/classes/jdk/internal/reflect/UTF8.java
View file

@ -1,76 +0,0 @@
/*
* Copyright (c) 2001, 2011, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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 jdk.internal.reflect;
/** It is necessary to use a "bootstrap" UTF-8 encoder for encoding
constant pool entries because the character set converters rely on
Class.newInstance(). */
class UTF8 {
// This encoder is not quite correct. It does not handle surrogate pairs.
static byte[] encode(String str) {
int len = str.length();
byte[] res = new byte[utf8Length(str)];
int utf8Idx = 0;
try {
for (int i = 0; i < len; i++) {
int c = str.charAt(i) & 0xFFFF;
if (c >= 0x0001 && c <= 0x007F) {
res[utf8Idx++] = (byte) c;
} else if (c == 0x0000 ||
(c >= 0x0080 && c <= 0x07FF)) {
res[utf8Idx++] = (byte) (0xC0 + (c >> 6));
res[utf8Idx++] = (byte) (0x80 + (c & 0x3F));
} else {
res[utf8Idx++] = (byte) (0xE0 + (c >> 12));
res[utf8Idx++] = (byte) (0x80 + ((c >> 6) & 0x3F));
res[utf8Idx++] = (byte) (0x80 + (c & 0x3F));
}
}
} catch (ArrayIndexOutOfBoundsException e) {
throw new InternalError
("Bug in sun.reflect bootstrap UTF-8 encoder", e);
}
return res;
}
private static int utf8Length(String str) {
int len = str.length();
int utf8Len = 0;
for (int i = 0; i < len; i++) {
int c = str.charAt(i) & 0xFFFF;
if (c >= 0x0001 && c <= 0x007F) {
utf8Len += 1;
} else if (c == 0x0000 ||
(c >= 0x0080 && c <= 0x07FF)) {
utf8Len += 2;
} else {
utf8Len += 3;
}
}
return utf8Len;
}
}