66 lines
1.1 KiB
Java
66 lines
1.1 KiB
Java
package fr.pandacube.lib.net;
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import java.util.Arrays;
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import com.google.common.annotations.Beta;
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@Beta
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public class Array8Bit {
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public static final int BIT_COUNT = Byte.SIZE;
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private boolean[] values = new boolean[BIT_COUNT];
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public Array8Bit(byte b) {
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fromByte(b);
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}
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/**
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* @param bits (index 0 is the lowest significant bit)
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*/
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public Array8Bit(boolean[] bits) {
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if (bits == null || bits.length != BIT_COUNT)
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throw new IllegalArgumentException("bits is null or bits.length != "+BIT_COUNT);
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values = Arrays.copyOf(bits, BIT_COUNT);
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}
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/**
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* i = 0 is the lowest significant bit
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*/
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public boolean getBit(int i) {
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return values[i];
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}
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/**
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* i = 0 is the lowest significant bit
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*/
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public void setBit(int i, boolean b) {
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values[i] = b;
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}
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public void fromByte(byte b) {
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int mask = 1;
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for (int i = 0; i < BIT_COUNT; i++) {
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values[i] = (b & mask) != 0;
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mask <<= 1;
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}
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}
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public byte toByte() {
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byte b = 0;
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for (int i=BIT_COUNT-1; i>=0; i--) {
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b <<= 1;
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if (values[i]) b |= 1;
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}
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return b;
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}
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}
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