281 lines
9.1 KiB
Java
281 lines
9.1 KiB
Java
package com.google.common.hash;
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import com.google.common.base.Preconditions;
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import com.google.common.primitives.Ints;
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import com.google.common.primitives.UnsignedBytes;
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import com.google.common.primitives.UnsignedInts;
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import java.io.Serializable;
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/* loaded from: classes2.dex */
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public abstract class HashCode {
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private static final char[] hexDigits = "0123456789abcdef".toCharArray();
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public abstract byte[] asBytes();
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public abstract int asInt();
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public abstract long asLong();
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public abstract int bits();
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abstract boolean equalsSameBits(HashCode hashCode);
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public abstract long padToLong();
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abstract void writeBytesToImpl(byte[] bArr, int i, int i2);
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HashCode() {
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}
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public int writeBytesTo(byte[] bArr, int i, int i2) {
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int min = Ints.min(i2, bits() / 8);
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Preconditions.checkPositionIndexes(i, i + min, bArr.length);
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writeBytesToImpl(bArr, i, min);
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return min;
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public byte[] getBytesInternal() {
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return asBytes();
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}
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public static HashCode fromInt(int i) {
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return new IntHashCode(i);
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}
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/* loaded from: classes2.dex */
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static final class IntHashCode extends HashCode implements Serializable {
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private static final long serialVersionUID = 0;
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final int hash;
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@Override // com.google.common.hash.HashCode
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public final int bits() {
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return 32;
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}
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IntHashCode(int i) {
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this.hash = i;
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}
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@Override // com.google.common.hash.HashCode
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public final long asLong() {
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throw new IllegalStateException("this HashCode only has 32 bits; cannot create a long");
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}
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@Override // com.google.common.hash.HashCode
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public final long padToLong() {
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return UnsignedInts.toLong(this.hash);
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}
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@Override // com.google.common.hash.HashCode
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final void writeBytesToImpl(byte[] bArr, int i, int i2) {
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for (int i3 = 0; i3 < i2; i3++) {
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bArr[i + i3] = (byte) (this.hash >> (i3 << 3));
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}
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}
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@Override // com.google.common.hash.HashCode
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final boolean equalsSameBits(HashCode hashCode) {
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return this.hash == hashCode.asInt();
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}
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@Override // com.google.common.hash.HashCode
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public final int asInt() {
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return this.hash;
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}
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@Override // com.google.common.hash.HashCode
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public final byte[] asBytes() {
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int i = this.hash;
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return new byte[]{(byte) i, (byte) (i >> 8), (byte) (i >> 16), (byte) (i >> 24)};
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}
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}
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public static HashCode fromLong(long j) {
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return new LongHashCode(j);
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}
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/* loaded from: classes2.dex */
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static final class LongHashCode extends HashCode implements Serializable {
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private static final long serialVersionUID = 0;
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final long hash;
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@Override // com.google.common.hash.HashCode
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public final int bits() {
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return 64;
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}
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LongHashCode(long j) {
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this.hash = j;
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}
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@Override // com.google.common.hash.HashCode
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final void writeBytesToImpl(byte[] bArr, int i, int i2) {
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for (int i3 = 0; i3 < i2; i3++) {
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bArr[i + i3] = (byte) (this.hash >> (i3 << 3));
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}
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}
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@Override // com.google.common.hash.HashCode
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final boolean equalsSameBits(HashCode hashCode) {
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return this.hash == hashCode.asLong();
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}
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@Override // com.google.common.hash.HashCode
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public final long padToLong() {
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return this.hash;
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}
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@Override // com.google.common.hash.HashCode
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public final long asLong() {
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return this.hash;
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}
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@Override // com.google.common.hash.HashCode
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public final int asInt() {
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return (int) this.hash;
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}
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@Override // com.google.common.hash.HashCode
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public final byte[] asBytes() {
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return new byte[]{(byte) this.hash, (byte) (r0 >> 8), (byte) (r0 >> 16), (byte) (r0 >> 24), (byte) (r0 >> 32), (byte) (r0 >> 40), (byte) (r0 >> 48), (byte) (r0 >> 56)};
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}
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}
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public static HashCode fromBytes(byte[] bArr) {
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Preconditions.checkArgument(bArr.length > 0, "A HashCode must contain at least 1 byte.");
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return fromBytesNoCopy((byte[]) bArr.clone());
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public static HashCode fromBytesNoCopy(byte[] bArr) {
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return new BytesHashCode(bArr);
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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/* loaded from: classes2.dex */
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public static final class BytesHashCode extends HashCode implements Serializable {
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private static final long serialVersionUID = 0;
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final byte[] bytes;
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BytesHashCode(byte[] bArr) {
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this.bytes = (byte[]) Preconditions.checkNotNull(bArr);
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}
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@Override // com.google.common.hash.HashCode
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public final int bits() {
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return this.bytes.length << 3;
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}
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@Override // com.google.common.hash.HashCode
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public final byte[] asBytes() {
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return (byte[]) this.bytes.clone();
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}
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@Override // com.google.common.hash.HashCode
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public final int asInt() {
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byte[] bArr = this.bytes;
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Preconditions.checkState(bArr.length >= 4, "HashCode#asInt() requires >= 4 bytes (it only has %s bytes).", bArr.length);
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byte[] bArr2 = this.bytes;
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return ((bArr2[3] & UnsignedBytes.MAX_VALUE) << 24) | (bArr2[0] & UnsignedBytes.MAX_VALUE) | ((bArr2[1] & UnsignedBytes.MAX_VALUE) << 8) | ((bArr2[2] & UnsignedBytes.MAX_VALUE) << 16);
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}
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@Override // com.google.common.hash.HashCode
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public final long asLong() {
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byte[] bArr = this.bytes;
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Preconditions.checkState(bArr.length >= 8, "HashCode#asLong() requires >= 8 bytes (it only has %s bytes).", bArr.length);
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return padToLong();
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}
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@Override // com.google.common.hash.HashCode
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public final long padToLong() {
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long j = this.bytes[0] & UnsignedBytes.MAX_VALUE;
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for (int i = 1; i < Math.min(this.bytes.length, 8); i++) {
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j |= (this.bytes[i] & 255) << (i << 3);
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}
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return j;
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}
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@Override // com.google.common.hash.HashCode
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final void writeBytesToImpl(byte[] bArr, int i, int i2) {
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System.arraycopy(this.bytes, 0, bArr, i, i2);
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}
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@Override // com.google.common.hash.HashCode
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final boolean equalsSameBits(HashCode hashCode) {
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if (this.bytes.length != hashCode.getBytesInternal().length) {
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return false;
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}
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boolean z = true;
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int i = 0;
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while (true) {
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byte[] bArr = this.bytes;
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if (i >= bArr.length) {
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return z;
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}
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z &= bArr[i] == hashCode.getBytesInternal()[i];
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i++;
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}
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}
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@Override // com.google.common.hash.HashCode
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final byte[] getBytesInternal() {
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return this.bytes;
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}
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}
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public static HashCode fromString(String str) {
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Preconditions.checkArgument(str.length() >= 2, "input string (%s) must have at least 2 characters", str);
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Preconditions.checkArgument(str.length() % 2 == 0, "input string (%s) must have an even number of characters", str);
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byte[] bArr = new byte[str.length() / 2];
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for (int i = 0; i < str.length(); i += 2) {
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bArr[i / 2] = (byte) ((decode(str.charAt(i)) << 4) + decode(str.charAt(i + 1)));
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}
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return fromBytesNoCopy(bArr);
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}
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private static int decode(char c) {
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if (c >= '0' && c <= '9') {
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return c - '0';
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}
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if (c >= 'a' && c <= 'f') {
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return c - 'W';
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}
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StringBuilder sb = new StringBuilder(32);
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sb.append("Illegal hexadecimal character: ");
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sb.append(c);
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throw new IllegalArgumentException(sb.toString());
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}
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public final boolean equals(Object obj) {
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if (!(obj instanceof HashCode)) {
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return false;
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}
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HashCode hashCode = (HashCode) obj;
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return bits() == hashCode.bits() && equalsSameBits(hashCode);
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}
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public final int hashCode() {
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if (bits() >= 32) {
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return asInt();
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}
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byte[] bytesInternal = getBytesInternal();
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int i = bytesInternal[0] & UnsignedBytes.MAX_VALUE;
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for (int i2 = 1; i2 < bytesInternal.length; i2++) {
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i |= (bytesInternal[i2] & UnsignedBytes.MAX_VALUE) << (i2 << 3);
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}
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return i;
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}
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public final String toString() {
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byte[] bytesInternal = getBytesInternal();
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StringBuilder sb = new StringBuilder(bytesInternal.length << 1);
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for (byte b : bytesInternal) {
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char[] cArr = hexDigits;
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sb.append(cArr[(b >> 4) & 15]);
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sb.append(cArr[b & 15]);
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}
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return sb.toString();
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}
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}
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