Refactor commons constants (no need to generate new arrays on every call).
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1606073 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Gary D. Gregory
parent
e769c18954
commit
c9e3793ae7
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@ -65,6 +65,24 @@ import java.util.UUID;
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*/
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public class Conversion {
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private static final boolean[] TTTT = new boolean[] { true, true, true, true };
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private static final boolean[] FTTT = new boolean[] { false, true, true, true };
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private static final boolean[] TFTT = new boolean[] { true, false, true, true };
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private static final boolean[] FFTT = new boolean[] { false, false, true, true };
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private static final boolean[] TTFT = new boolean[] { true, true, false, true };
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private static final boolean[] FTFT = new boolean[] { false, true, false, true };
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private static final boolean[] TFFT = new boolean[] { true, false, false, true };
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private static final boolean[] FFFT = new boolean[] { false, false, false, true };
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private static final boolean[] TTTF = new boolean[] { true, true, true, false };
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private static final boolean[] FTTF = new boolean[] { false, true, true, false };
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private static final boolean[] TFTF = new boolean[] { true, false, true, false };
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private static final boolean[] FFTF = new boolean[] { false, false, true, false };
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private static final boolean[] TTFF = new boolean[] { true, true, false, false };
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private static final boolean[] FTFF = new boolean[] { false, true, false, false };
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private static final boolean[] TFFF = new boolean[] { true, false, false, false };
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private static final boolean[] FFFF = new boolean[] { false, false, false, false };
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/**
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* <p>
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* Converts a hexadecimal digit into an int using the default (Lsb0) bit ordering.
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@ -162,43 +180,43 @@ public class Conversion {
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public static boolean[] hexDigitToBinary(final char hexDigit) {
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switch (hexDigit) {
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case '0':
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return new boolean[]{false, false, false, false};
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return FFFF;
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case '1':
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return new boolean[]{true, false, false, false};
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return TFFF;
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case '2':
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return new boolean[]{false, true, false, false};
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return FTFF;
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case '3':
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return new boolean[]{true, true, false, false};
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return TTFF;
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case '4':
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return new boolean[]{false, false, true, false};
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return FFTF;
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case '5':
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return new boolean[]{true, false, true, false};
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return TFTF;
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case '6':
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return new boolean[]{false, true, true, false};
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return FTTF;
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case '7':
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return new boolean[]{true, true, true, false};
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return TTTF;
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case '8':
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return new boolean[]{false, false, false, true};
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return FFFT;
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case '9':
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return new boolean[]{true, false, false, true};
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return TFFT;
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case 'a':// fall through
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case 'A':
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return new boolean[]{false, true, false, true};
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return FTFT;
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case 'b':// fall through
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case 'B':
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return new boolean[]{true, true, false, true};
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return TTFT;
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case 'c':// fall through
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case 'C':
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return new boolean[]{false, false, true, true};
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return FFTT;
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case 'd':// fall through
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case 'D':
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return new boolean[]{true, false, true, true};
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return TFTT;
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case 'e':// fall through
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case 'E':
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return new boolean[]{false, true, true, true};
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return FTTT;
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case 'f':// fall through
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case 'F':
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return new boolean[]{true, true, true, true};
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return TTTT;
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default:
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throw new IllegalArgumentException("Cannot interpret '"
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+ hexDigit
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@ -222,43 +240,43 @@ public class Conversion {
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public static boolean[] hexDigitMsb0ToBinary(final char hexDigit) {
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switch (hexDigit) {
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case '0':
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return new boolean[]{false, false, false, false};
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return FFFF;
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case '1':
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return new boolean[]{false, false, false, true};
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return FFFT;
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case '2':
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return new boolean[]{false, false, true, false};
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return FFTF;
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case '3':
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return new boolean[]{false, false, true, true};
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return FFTT;
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case '4':
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return new boolean[]{false, true, false, false};
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return FTFF;
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case '5':
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return new boolean[]{false, true, false, true};
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return FTFT;
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case '6':
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return new boolean[]{false, true, true, false};
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return FTTF;
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case '7':
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return new boolean[]{false, true, true, true};
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return FTTT;
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case '8':
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return new boolean[]{true, false, false, false};
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return TFFF;
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case '9':
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return new boolean[]{true, false, false, true};
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return TFFT;
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case 'a':// fall through
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case 'A':
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return new boolean[]{true, false, true, false};
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return TFTF;
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case 'b':// fall through
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case 'B':
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return new boolean[]{true, false, true, true};
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return TFTT;
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case 'c':// fall through
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case 'C':
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return new boolean[]{true, true, false, false};
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return TTFF;
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case 'd':// fall through
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case 'D':
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return new boolean[]{true, true, false, true};
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return TTFT;
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case 'e':// fall through
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case 'E':
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return new boolean[]{true, true, true, false};
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return TTTF;
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case 'f':// fall through
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case 'F':
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return new boolean[]{true, true, true, true};
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return TTTT;
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default:
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throw new IllegalArgumentException("Cannot interpret '"
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+ hexDigit
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