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8263754: HexFormat 'fromHex' methods should be static

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Reviewed-by: redestad, naoto, chegar
This commit is contained in:
Roger Riggs 2021-03-29 20:38:10 +00:00
parent a5d7de2351
commit 8cf1c62c34
5 changed files with 39 additions and 54 deletions
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20
src/java.base/share/classes/java/util/HexFormat.java
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@ -877,7 +877,7 @@ public final class HexFormat {
* @return {@code true} if the character is valid a hexadecimal character,
* otherwise {@code false}
*/
public boolean isHexDigit(int ch) {
public static boolean isHexDigit(int ch) {
return ((ch >>> 8) == 0 && DIGITS[ch] >= 0);
}
@ -889,13 +889,12 @@ public final class HexFormat {
* <li>{@code (ch - 'A' + 10)} for {@code 'A'} through {@code 'F'} inclusive, and
* <li>{@code (ch - 'a' + 10)} for {@code 'a'} through {@code 'f'} inclusive.
* </ul>
* The delimiter, prefix, suffix, and uppercase parameters are not used.
*
* @param ch a character or codepoint
* @return the value {@code 0-15}
* @throws NumberFormatException if the codepoint is not a hexadecimal character
*/
public int fromHexDigit(int ch) {
public static int fromHexDigit(int ch) {
int value;
if ((ch >>> 8) == 0 && (value = DIGITS[ch]) >= 0) {
return value;
@ -907,7 +906,6 @@ public final class HexFormat {
* Returns a value parsed from two hexadecimal characters in a string.
* The characters in the range from {@code index} to {@code index + 1},
* inclusive, must be valid hex digits according to {@link #fromHexDigit(int)}.
* The delimiter, prefix, suffix, and uppercase parameters are not used.
*
* @param string a CharSequence containing the characters
* @param index the index of the first character of the range
@ -917,7 +915,7 @@ public final class HexFormat {
* @throws IndexOutOfBoundsException if the range is out of bounds
* for the {@code CharSequence}
*/
private int fromHexDigits(CharSequence string, int index) {
private static int fromHexDigits(CharSequence string, int index) {
Objects.requireNonNull(string, "string");
int high = fromHexDigit(string.charAt(index));
int low = fromHexDigit(string.charAt(index + 1));
@ -929,7 +927,6 @@ public final class HexFormat {
* The hexadecimal characters are parsed from most significant to least significant
* using {@link #fromHexDigit(int)} to form an unsigned value.
* The value is zero extended to 32 bits and is returned as an {@code int}.
* The delimiter, prefix, suffix, and uppercase parameters are not used.
*
* @apiNote
* {@link Integer#parseInt(String, int) Integer.parseInt(s, 16)} and
@ -944,7 +941,7 @@ public final class HexFormat {
* @throws IllegalArgumentException if the string length is greater than eight (8) or
* if any of the characters is not a hexadecimal character
*/
public int fromHexDigits(CharSequence string) {
public static int fromHexDigits(CharSequence string) {
Objects.requireNonNull(string, "string");
int length = checkDigitCount(0, string.length(), 8);
int value = 0;
@ -961,7 +958,6 @@ public final class HexFormat {
* are parsed from most significant to least significant
* using {@link #fromHexDigit(int)} to form an unsigned value.
* The value is zero extended to 32 bits and is returned as an {@code int}.
* The delimiter, prefix, suffix, and uppercase parameters are not used.
*
* @apiNote
* {@link Integer#parseInt(String, int) Integer.parseInt(s, 16)} and
@ -980,7 +976,7 @@ public final class HexFormat {
* @throws IllegalArgumentException if length of the range is greater than eight (8) or
* if any of the characters is not a hexadecimal character
*/
public int fromHexDigits(CharSequence string, int fromIndex, int toIndex) {
public static int fromHexDigits(CharSequence string, int fromIndex, int toIndex) {
Objects.requireNonNull(string, "string");
Objects.checkFromToIndex(fromIndex, toIndex, string.length());
int length = checkDigitCount(fromIndex, toIndex, 8);
@ -996,7 +992,6 @@ public final class HexFormat {
* The hexadecimal characters are parsed from most significant to least significant
* using {@link #fromHexDigit(int)} to form an unsigned value.
* The value is zero extended to 64 bits and is returned as a {@code long}.
* The delimiter, prefix, suffix, and uppercase parameters are not used.
*
* @apiNote
* {@link Long#parseLong(String, int) Long.parseLong(s, 16)} and
@ -1011,7 +1006,7 @@ public final class HexFormat {
* @throws IllegalArgumentException if the string length is greater than sixteen (16) or
* if any of the characters is not a hexadecimal character
*/
public long fromHexDigitsToLong(CharSequence string) {
public static long fromHexDigitsToLong(CharSequence string) {
Objects.requireNonNull(string, "string");
int length = checkDigitCount(0, string.length(), 16);
long value = 0L;
@ -1028,7 +1023,6 @@ public final class HexFormat {
* are parsed from most significant to least significant
* using {@link #fromHexDigit(int)} to form an unsigned value.
* The value is zero extended to 64 bits and is returned as a {@code long}.
* The delimiter, prefix, suffix, and uppercase parameters are not used.
*
* @apiNote
* {@link Long#parseLong(String, int) Long.parseLong(s, 16)} and
@ -1047,7 +1041,7 @@ public final class HexFormat {
* @throws IllegalArgumentException if the length of the range is greater than sixteen (16) or
* if any of the characters is not a hexadecimal character
*/
public long fromHexDigitsToLong(CharSequence string, int fromIndex, int toIndex) {
public static long fromHexDigitsToLong(CharSequence string, int fromIndex, int toIndex) {
Objects.requireNonNull(string, "string");
Objects.checkFromToIndex(fromIndex, toIndex, string.length());
int length = checkDigitCount(fromIndex, toIndex, 16);