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8348898: Remove unused OctalDigits to clean up code

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Reviewed-by: liach
This commit is contained in:
Shaojin Wen 2025-01-29 16:24:01 +00:00
parent 96fefed37f
commit cbc89a7ac6
1 changed files with 0 additions and 130 deletions
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130
src/java.base/share/classes/jdk/internal/util/OctalDigits.java
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@ -1,130 +0,0 @@
/*
* Copyright (c) 2023, 2024, 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.util;
import jdk.internal.access.JavaLangAccess;
import jdk.internal.access.SharedSecrets;
import jdk.internal.vm.annotation.Stable;
/**
* Digits class for octal digits.
*
* @since 21
*/
public final class OctalDigits {
private static final JavaLangAccess JLA = SharedSecrets.getJavaLangAccess();
@Stable
private static final short[] DIGITS;
static {
short[] digits = new short[8 * 8];
for (int i = 0; i < 8; i++) {
short lo = (short) (i + '0');
for (int j = 0; j < 8; j++) {
short hi = (short) ((j + '0') << 8);
digits[(i << 3) + j] = (short) (hi | lo);
}
}
DIGITS = digits;
}
/**
* Constructor.
*/
private OctalDigits() {
}
/**
* Insert digits for long value in buffer from high index to low index.
*
* @param value value to convert
* @param index insert point + 1
* @param buffer byte buffer to copy into
*
* @return the last index used
*/
public static int getCharsLatin1(long value, int index, byte[] buffer){
while ((value & ~0x3F) != 0) {
int digits = DIGITS[((int) value) & 0x3F];
value >>>= 6;
buffer[--index] = (byte) (digits >> 8);
buffer[--index] = (byte) (digits & 0xFF);
}
int digits = DIGITS[(int) (value & 0x3F)];
buffer[--index] = (byte) (digits >> 8);
if (7 < value) {
buffer[--index] = (byte) (digits & 0xFF);
}
return index;
}
/**
* This is a variant of {@link OctalDigits#getCharsLatin1(long, int, byte[])}, but for
* UTF-16 coder.
*
* @param value value to convert
* @param index insert point + 1
* @param buffer byte buffer to copy into
*
* @return the last index used
*/
public static int getCharsUTF16(long value, int index, byte[] buffer){
while ((value & ~0x3F) != 0) {
int pair = (int) DIGITS[((int) value) & 0x3F];
JLA.putCharUTF16(buffer, --index, pair >> 8);
JLA.putCharUTF16(buffer, --index, pair & 0xFF);
value >>>= 6;
}
int digits = DIGITS[(int) (value & 0x3F)];
JLA.putCharUTF16(buffer, --index, digits >> 8);
if (7 < value) {
JLA.putCharUTF16(buffer, --index, digits & 0xFF);
}
return index;
}
/**
* Calculate the number of digits required to represent the long.
*
* @param value value to convert
*
* @return number of digits
*/
public static int stringSize(long value) {
return value == 0 ? 1 : ((66 - Long.numberOfLeadingZeros(value)) / 3);
}
}