76 lines
1.9 KiB
Java
76 lines
1.9 KiB
Java
package net.minecraft.server;
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import org.apache.commons.lang3.Validate;
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public class DataBits {
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private final long[] a;
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private final int b;
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private final long c;
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private final int d;
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public DataBits(int i, int j) {
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this(i, j, new long[MathHelper.c(j * i, 64) / 64]);
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}
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public DataBits(int i, int j, long[] along) {
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//Validate.inclusiveBetween(1L, 32L, (long) i); // Paper
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this.d = j;
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this.b = i;
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this.a = along;
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this.c = (1L << i) - 1L;
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int k = MathHelper.c(j * i, 64) / 64;
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if (along.length != k) {
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throw new RuntimeException("Invalid length given for storage, got: " + along.length + " but expected: " + k);
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}
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}
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public void a(int i, int j) {
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//Validate.inclusiveBetween(0L, (long) (this.d - 1), (long) i); // Paper
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//Validate.inclusiveBetween(0L, this.c, (long) j); // Paper
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int k = i * this.b;
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int l = k / 64;
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int i1 = ((i + 1) * this.b - 1) / 64;
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int j1 = k % 64;
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this.a[l] = this.a[l] & ~(this.c << j1) | ((long) j & this.c) << j1;
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if (l != i1) {
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int k1 = 64 - j1;
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int l1 = this.b - k1;
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this.a[i1] = this.a[i1] >>> l1 << l1 | ((long) j & this.c) >> k1;
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}
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}
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public int a(int i) {
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//Validate.inclusiveBetween(0L, (long) (this.d - 1), (long) i); // Paper
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int j = i * this.b;
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int k = j / 64;
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int l = ((i + 1) * this.b - 1) / 64;
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int i1 = j % 64;
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if (k == l) {
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return (int) (this.a[k] >>> i1 & this.c);
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} else {
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int j1 = 64 - i1;
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return (int) ((this.a[k] >>> i1 | this.a[l] << j1) & this.c);
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}
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}
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public long[] getDataBits() { return this.a(); } // Paper - OBFHELPER
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public long[] a() {
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return this.a;
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}
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public int b() {
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return this.d;
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}
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public int c() {
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return this.b;
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}
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}
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