Rabbit-R1/switch port/java/sources/com/google/common/hash/FarmHashFingerprint64.java
2024-05-21 17:08:36 -04:00

150 lines
7.2 KiB
Java

package com.google.common.hash;
import com.google.common.base.Preconditions;
import io.flutter.embedding.android.KeyboardMap;
@ElementTypesAreNonnullByDefault
/* loaded from: classes3.dex */
final class FarmHashFingerprint64 extends AbstractNonStreamingHashFunction {
static final HashFunction FARMHASH_FINGERPRINT_64 = new FarmHashFingerprint64();
private static final long K0 = -4348849565147123417L;
private static final long K1 = -5435081209227447693L;
private static final long K2 = -7286425919675154353L;
private static long hashLength16(long j, long j2, long j3) {
long j4 = (j ^ j2) * j3;
long j5 = ((j4 ^ (j4 >>> 47)) ^ j2) * j3;
return (j5 ^ (j5 >>> 47)) * j3;
}
private static long shiftMix(long j) {
return j ^ (j >>> 47);
}
@Override // com.google.common.hash.HashFunction
public int bits() {
return 64;
}
public String toString() {
return "Hashing.farmHashFingerprint64()";
}
FarmHashFingerprint64() {
}
@Override // com.google.common.hash.AbstractNonStreamingHashFunction, com.google.common.hash.AbstractHashFunction, com.google.common.hash.HashFunction
public HashCode hashBytes(byte[] bArr, int i, int i2) {
Preconditions.checkPositionIndexes(i, i + i2, bArr.length);
return HashCode.fromLong(fingerprint(bArr, i, i2));
}
static long fingerprint(byte[] bArr, int i, int i2) {
if (i2 <= 32) {
if (i2 <= 16) {
return hashLength0to16(bArr, i, i2);
}
return hashLength17to32(bArr, i, i2);
}
if (i2 <= 64) {
return hashLength33To64(bArr, i, i2);
}
return hashLength65Plus(bArr, i, i2);
}
private static void weakHashLength32WithSeeds(byte[] bArr, int i, long j, long j2, long[] jArr) {
long load64 = LittleEndianByteArray.load64(bArr, i);
long load642 = LittleEndianByteArray.load64(bArr, i + 8);
long load643 = LittleEndianByteArray.load64(bArr, i + 16);
long load644 = LittleEndianByteArray.load64(bArr, i + 24);
long j3 = j + load64;
long j4 = load642 + j3 + load643;
long rotateRight = Long.rotateRight(j2 + j3 + load644, 21) + Long.rotateRight(j4, 44);
jArr[0] = j4 + load644;
jArr[1] = rotateRight + j3;
}
private static long hashLength0to16(byte[] bArr, int i, int i2) {
if (i2 >= 8) {
long j = (i2 * 2) + K2;
long load64 = LittleEndianByteArray.load64(bArr, i) + K2;
long load642 = LittleEndianByteArray.load64(bArr, (i + i2) - 8);
return hashLength16((Long.rotateRight(load642, 37) * j) + load64, (Long.rotateRight(load64, 25) + load642) * j, j);
}
if (i2 >= 4) {
return hashLength16(i2 + ((LittleEndianByteArray.load32(bArr, i) & KeyboardMap.kValueMask) << 3), LittleEndianByteArray.load32(bArr, (i + i2) - 4) & KeyboardMap.kValueMask, (i2 * 2) + K2);
}
if (i2 <= 0) {
return K2;
}
return shiftMix((((bArr[i] & 255) + ((bArr[(i2 >> 1) + i] & 255) << 8)) * K2) ^ ((i2 + ((bArr[i + (i2 - 1)] & 255) << 2)) * K0)) * K2;
}
private static long hashLength17to32(byte[] bArr, int i, int i2) {
long j = (i2 * 2) + K2;
long load64 = LittleEndianByteArray.load64(bArr, i) * K1;
long load642 = LittleEndianByteArray.load64(bArr, i + 8);
int i3 = i + i2;
long load643 = LittleEndianByteArray.load64(bArr, i3 - 8) * j;
return hashLength16((LittleEndianByteArray.load64(bArr, i3 - 16) * K2) + Long.rotateRight(load64 + load642, 43) + Long.rotateRight(load643, 30), load64 + Long.rotateRight(load642 + K2, 18) + load643, j);
}
private static long hashLength33To64(byte[] bArr, int i, int i2) {
long j = (i2 * 2) + K2;
long load64 = LittleEndianByteArray.load64(bArr, i) * K2;
long load642 = LittleEndianByteArray.load64(bArr, i + 8);
int i3 = i + i2;
long load643 = LittleEndianByteArray.load64(bArr, i3 - 8) * j;
long rotateRight = Long.rotateRight(load64 + load642, 43) + Long.rotateRight(load643, 30) + (LittleEndianByteArray.load64(bArr, i3 - 16) * K2);
long hashLength16 = hashLength16(rotateRight, load643 + Long.rotateRight(load642 + K2, 18) + load64, j);
long load644 = LittleEndianByteArray.load64(bArr, i + 16) * j;
long load645 = LittleEndianByteArray.load64(bArr, i + 24);
long load646 = (rotateRight + LittleEndianByteArray.load64(bArr, i3 - 32)) * j;
return hashLength16(((hashLength16 + LittleEndianByteArray.load64(bArr, i3 - 24)) * j) + Long.rotateRight(load644 + load645, 43) + Long.rotateRight(load646, 30), load644 + Long.rotateRight(load645 + load64, 18) + load646, j);
}
private static long hashLength65Plus(byte[] bArr, int i, int i2) {
long j = 81;
long j2 = (j * K1) + 113;
long shiftMix = shiftMix((j2 * K2) + 113) * K2;
long[] jArr = new long[2];
long[] jArr2 = new long[2];
long load64 = (j * K2) + LittleEndianByteArray.load64(bArr, i);
int i3 = i2 - 1;
int i4 = i + ((i3 / 64) * 64);
int i5 = i3 & 63;
int i6 = i4 + i5;
int i7 = i6 - 63;
int i8 = i;
while (true) {
long rotateRight = Long.rotateRight(load64 + j2 + jArr[0] + LittleEndianByteArray.load64(bArr, i8 + 8), 37) * K1;
long rotateRight2 = Long.rotateRight(j2 + jArr[1] + LittleEndianByteArray.load64(bArr, i8 + 48), 42) * K1;
long j3 = rotateRight ^ jArr2[1];
long load642 = rotateRight2 + jArr[0] + LittleEndianByteArray.load64(bArr, i8 + 40);
long rotateRight3 = Long.rotateRight(shiftMix + jArr2[0], 33) * K1;
weakHashLength32WithSeeds(bArr, i8, jArr[1] * K1, j3 + jArr2[0], jArr);
weakHashLength32WithSeeds(bArr, i8 + 32, rotateRight3 + jArr2[1], load642 + LittleEndianByteArray.load64(bArr, i8 + 16), jArr2);
int i9 = i8 + 64;
if (i9 == i4) {
long j4 = K1 + ((j3 & 255) << 1);
long j5 = jArr2[0] + i5;
jArr2[0] = j5;
long j6 = jArr[0] + j5;
jArr[0] = j6;
jArr2[0] = jArr2[0] + j6;
long rotateRight4 = Long.rotateRight(rotateRight3 + load642 + jArr[0] + LittleEndianByteArray.load64(bArr, i6 - 55), 37) * j4;
long rotateRight5 = Long.rotateRight(load642 + jArr[1] + LittleEndianByteArray.load64(bArr, i6 - 15), 42) * j4;
long j7 = rotateRight4 ^ (jArr2[1] * 9);
long load643 = rotateRight5 + (jArr[0] * 9) + LittleEndianByteArray.load64(bArr, i6 - 23);
long rotateRight6 = Long.rotateRight(j3 + jArr2[0], 33) * j4;
weakHashLength32WithSeeds(bArr, i7, jArr[1] * j4, j7 + jArr2[0], jArr);
weakHashLength32WithSeeds(bArr, i6 - 31, rotateRight6 + jArr2[1], load643 + LittleEndianByteArray.load64(bArr, i6 - 47), jArr2);
return hashLength16(hashLength16(jArr[0], jArr2[0], j4) + (shiftMix(load643) * K0) + j7, hashLength16(jArr[1], jArr2[1], j4) + rotateRight6, j4);
}
i8 = i9;
shiftMix = j3;
j2 = load642;
load64 = rotateRight3;
}
}
}