Generate hashCode and equals for unsigned types

generators/builtins/unsignedTypes.kt

@@ -229,6 +229,17 @@ class UnsignedTypeGenerator(val type: UnsignedType, out: PrintWriter) : BuiltIns
             UnsignedType.ULONG -> out.println("ulongToString(data)")
             else -> error(type)
         }
+        out.println()
+
+        out.print("    public override fun hashCode(): Int = ")
+        when (type) {
+            UnsignedType.UBYTE, UnsignedType.USHORT, UnsignedType.UINT -> out.println("toInt()")
+            UnsignedType.ULONG -> out.println("((this shr 32).toInt() xor this.toInt())")
+        }
+        out.println()
+
+        out.println("    public override fun equals(other: Any?): Boolean =")
+        out.println("        other is ${type.capitalized} && this.data == other.data")
 
         out.println()
     }

libraries/stdlib/unsigned/src/kotlin/UByte.kt

@@ -138,6 +138,11 @@ public inline class UByte internal constructor(private val data: Byte) : Compara
 
     public override fun toString(): String = toInt().toString()
 
+    public override fun hashCode(): Int = toInt()
+
+    public override fun equals(other: Any?): Boolean =
+        other is UByte && this.data == other.data
+
 }
 
 @SinceKotlin("1.3")

libraries/stdlib/unsigned/src/kotlin/UInt.kt

@@ -142,6 +142,11 @@ public inline class UInt internal constructor(private val data: Int) : Comparabl
 
     public override fun toString(): String = toLong().toString()
 
+    public override fun hashCode(): Int = toInt()
+
+    public override fun equals(other: Any?): Boolean =
+        other is UInt && this.data == other.data
+
 }
 
 @SinceKotlin("1.3")

libraries/stdlib/unsigned/src/kotlin/ULong.kt

@@ -142,6 +142,11 @@ public inline class ULong internal constructor(private val data: Long) : Compara
 
     public override fun toString(): String = ulongToString(data)
 
+    public override fun hashCode(): Int = ((this shr 32).toInt() xor this.toInt())
+
+    public override fun equals(other: Any?): Boolean =
+        other is ULong && this.data == other.data
+
 }
 
 @SinceKotlin("1.3")

libraries/stdlib/unsigned/src/kotlin/UShort.kt

@@ -138,6 +138,11 @@ public inline class UShort internal constructor(private val data: Short) : Compa
 
     public override fun toString(): String = toInt().toString()
 
+    public override fun hashCode(): Int = toInt()
+
+    public override fun equals(other: Any?): Boolean =
+        other is UShort && this.data == other.data
+
 }
 
 @SinceKotlin("1.3")

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib-runtime-merged.txt

@@ -229,6 +229,8 @@ public final class kotlin/UByte : java/lang/Comparable {
 	public final fun div (I)I
 	public final fun div (J)J
 	public final fun div (S)I
+	public fun equals (Ljava/lang/Object;)Z
+	public fun hashCode ()I
 	public final fun inc ()B
 	public final fun inv ()B
 	public final fun minus (B)I
@@ -277,6 +279,8 @@ public final class kotlin/UByte$Erased {
 	public static final fun div (BI)I
 	public static final fun div (BJ)J
 	public static final fun div (BS)I
+	public static fun equals (BLjava/lang/Object;)Z
+	public static fun hashCode (B)I
 	public static final fun inc (B)B
 	public static final fun inv (B)B
 	public static final fun minus (BB)I
@@ -373,6 +377,8 @@ public final class kotlin/UInt : java/lang/Comparable {
 	public final fun div (I)I
 	public final fun div (J)J
 	public final fun div (S)I
+	public fun equals (Ljava/lang/Object;)Z
+	public fun hashCode ()I
 	public final fun inc ()I
 	public final fun inv ()I
 	public final fun minus (B)I
@@ -423,6 +429,8 @@ public final class kotlin/UInt$Erased {
 	public static final fun div (II)I
 	public static final fun div (IJ)J
 	public static final fun div (IS)I
+	public static fun equals (ILjava/lang/Object;)Z
+	public static fun hashCode (I)I
 	public static final fun inc (I)I
 	public static final fun inv (I)I
 	public static final fun minus (IB)I
@@ -521,6 +529,8 @@ public final class kotlin/ULong : java/lang/Comparable {
 	public final fun div (I)J
 	public final fun div (J)J
 	public final fun div (S)J
+	public fun equals (Ljava/lang/Object;)Z
+	public fun hashCode ()I
 	public final fun inc ()J
 	public final fun inv ()J
 	public final fun minus (B)J
@@ -571,6 +581,8 @@ public final class kotlin/ULong$Erased {
 	public static final fun div (JI)J
 	public static final fun div (JJ)J
 	public static final fun div (JS)J
+	public static fun equals (JLjava/lang/Object;)Z
+	public static fun hashCode (J)I
 	public static final fun inc (J)J
 	public static final fun inv (J)J
 	public static final fun minus (JB)J
@@ -669,6 +681,8 @@ public final class kotlin/UShort : java/lang/Comparable {
 	public final fun div (I)I
 	public final fun div (J)J
 	public final fun div (S)I
+	public fun equals (Ljava/lang/Object;)Z
+	public fun hashCode ()I
 	public final fun inc ()S
 	public final fun inv ()S
 	public final fun minus (B)I
@@ -717,6 +731,8 @@ public final class kotlin/UShort$Erased {
 	public static final fun div (SI)I
 	public static final fun div (SJ)J
 	public static final fun div (SS)I
+	public static fun equals (SLjava/lang/Object;)Z
+	public static fun hashCode (S)I
 	public static final fun inc (S)S
 	public static final fun inv (S)S
 	public static final fun minus (SB)I