Subclassed ranges from sequence.

compiler/frontend/src/jet/Ranges.jet

@@ -6,71 +6,85 @@ public trait Range<in T : Comparable<T>> {
     public fun contains(item : T) : Boolean
 }
 
-public class IntRange(public override val start : Int, public override val end : Int) : Range<Int>, IntIterable {
+public class IntRange(public override val start : Int, public override val end : Int) : Range<Int>, NumberSequence<Int>, IntIterable {
     public override fun iterator () : IntIterator
 
     public override fun contains (elem: Int) : Boolean
 
+    public override val increment: Int
+
     public class object {
         public val EMPTY: IntRange
     }
 }
 
-public class LongRange(public override val start : Long, public override val end : Long) : Range<Long>, LongIterable {
+public class LongRange(public override val start : Long, public override val end : Long) : Range<Long>, NumberSequence<Long>, LongIterable {
     public override fun iterator () : LongIterator
 
     public override fun contains (elem: Long) : Boolean
 
+    public override val increment: Long
+
     public class object {
         public val EMPTY: LongRange
     }
 }
 
-public class ByteRange(public override val start : Byte, public override val end : Byte) : Range<Byte>, ByteIterable {
+public class ByteRange(public override val start : Byte, public override val end : Byte) : Range<Byte>, NumberSequence<Byte>, ByteIterable {
     public override fun iterator () : ByteIterator
 
     public override fun contains (elem: Byte) : Boolean
 
+    public override val increment: Int
+
     public class object {
         public val EMPTY: ByteRange
     }
 }
 
-public class ShortRange(public override val start : Short, public override val end : Short) : Range<Short>, ShortIterable {
+public class ShortRange(public override val start : Short, public override val end : Short) : Range<Short>, NumberSequence<Short>, ShortIterable {
     public override fun iterator () : ShortIterator
 
     public override fun contains (elem: Short) : Boolean
 
+    public override val increment: Int
+
     public class object {
         public val EMPTY: ShortRange
     }
 }
 
-public class CharRange(public override val start : Char, public override val end : Char) : Range<Char>, CharIterable {
+public class CharRange(public override val start : Char, public override val end : Char) : Range<Char>, NumberSequence<Char>, CharIterable {
     public override fun iterator () : CharIterator
 
     public override fun contains (elem: Char) : Boolean
 
+    public override val increment: Int
+
     public class object {
         public val EMPTY: CharRange
     }
 }
 
-public class FloatRange(public override val start : Float, public override val end : Float) : Range<Float>, FloatIterable {
+public class FloatRange(public override val start : Float, public override val end : Float) : Range<Float>, NumberSequence<Float>, FloatIterable {
     public override fun iterator () : FloatIterator
 
     public override fun contains (elem: Float) : Boolean
 
+    public override val increment: Float
+
     public class object {
         public val EMPTY: FloatRange
     }
 }
 
-public class DoubleRange(public override val start : Double, public override val end : Double) : Range<Double>, DoubleIterable {
+public class DoubleRange(public override val start : Double, public override val end : Double) : Range<Double>, NumberSequence<Double>, DoubleIterable {
     public override fun iterator () : DoubleIterator
 
     public override fun contains (elem: Double) : Boolean
 
+    public override val increment: Double
+
     public class object {
         public val EMPTY: DoubleRange
     }