Subclassed ranges from sequence.

runtime/src/jet/ByteRange.java

@@ -19,7 +19,7 @@ package jet;
 import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
 
 @AssertInvisibleInResolver
-public final class ByteRange implements Range<Byte>, ByteIterable {
+public final class ByteRange implements Range<Byte>, NumberSequence<Byte>, ByteIterable {
     private final byte start;
     private final byte end;
 
@@ -74,6 +74,11 @@ public final class ByteRange implements Range<Byte>, ByteIterable {
         return end;
     }
 
+    @Override
+    public Integer getIncrement() {
+        return 1;
+    }
+
     @Override
     public ByteIterator iterator() {
         return new ByteSequenceIterator(getStart(), getEnd(), 1);

runtime/src/jet/CharRange.java

@@ -19,7 +19,7 @@ package jet;
 import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
 
 @AssertInvisibleInResolver
-public final class CharRange implements Range<Character>, CharIterable {
+public final class CharRange implements Range<Character>, NumberSequence<Character>, CharIterable {
     private final char start;
     private final char end;
 
@@ -74,6 +74,11 @@ public final class CharRange implements Range<Character>, CharIterable {
         return end;
     }
 
+    @Override
+    public Integer getIncrement() {
+        return 1;
+    }
+
     @Override
     public CharIterator iterator() {
         return new CharacterSequenceIterator(getStart(), getEnd(), 1);

runtime/src/jet/DoubleRange.java

@@ -19,7 +19,7 @@ package jet;
 import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
 
 @AssertInvisibleInResolver
-public final class DoubleRange implements Range<Double>, DoubleIterable {
+public final class DoubleRange implements Range<Double>, NumberSequence<Double>, DoubleIterable {
     private final double start;
     private final double end;
 
@@ -75,6 +75,11 @@ public final class DoubleRange implements Range<Double>, DoubleIterable {
         return end;
     }
 
+    @Override
+    public Double getIncrement() {
+        return 1.0;
+    }
+
     @Override
     public DoubleIterator iterator() {
         return new DoubleSequenceIterator(getStart(), getEnd(), 1);

runtime/src/jet/FloatRange.java

@@ -19,7 +19,7 @@ package jet;
 import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
 
 @AssertInvisibleInResolver
-public final class FloatRange implements Range<Float>, FloatIterable {
+public final class FloatRange implements Range<Float>, NumberSequence<Float>, FloatIterable {
     private final float start;
     private final float end;
 
@@ -71,6 +71,11 @@ public final class FloatRange implements Range<Float>, FloatIterable {
         return end;
     }
 
+    @Override
+    public Float getIncrement() {
+        return 1.0f;
+    }
+
     @Override
     public FloatIterator iterator() {
         return new FloatSequenceIterator(getStart(), getEnd(), 1);

runtime/src/jet/IntRange.java

@@ -19,7 +19,7 @@ package jet;
 import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
 
 @AssertInvisibleInResolver
-public final class IntRange implements Range<Integer>, IntIterable {
+public final class IntRange implements Range<Integer>, NumberSequence<Integer>, IntIterable {
     private final int start;
     private final int end;
 
@@ -74,6 +74,11 @@ public final class IntRange implements Range<Integer>, IntIterable {
         return end;
     }
 
+    @Override
+    public Integer getIncrement() {
+        return 1;
+    }
+
     @Override
     public IntIterator iterator() {
         return new IntSequenceIterator(getStart(), getEnd(), 1);

runtime/src/jet/LongRange.java

@@ -19,7 +19,7 @@ package jet;
 import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
 
 @AssertInvisibleInResolver
-public final class LongRange implements Range<Long>, LongIterable {
+public final class LongRange implements Range<Long>, NumberSequence<Long>, LongIterable {
     private final long start;
     private final long end;
 
@@ -74,6 +74,11 @@ public final class LongRange implements Range<Long>, LongIterable {
         return end;
     }
 
+    @Override
+    public Long getIncrement() {
+        return 1L;
+    }
+
     @Override
     public LongIterator iterator() {
         return new LongSequenceIterator(getStart(), getEnd(), 1);

runtime/src/jet/ShortRange.java

@@ -19,7 +19,7 @@ package jet;
 import org.jetbrains.jet.rt.annotation.AssertInvisibleInResolver;
 
 @AssertInvisibleInResolver
-public final class ShortRange implements Range<Short>, ShortIterable {
+public final class ShortRange implements Range<Short>, NumberSequence<Short>, ShortIterable {
     private final short start;
     private final short end;
 
@@ -74,6 +74,11 @@ public final class ShortRange implements Range<Short>, ShortIterable {
         return end;
     }
 
+    @Override
+    public Integer getIncrement() {
+        return 1;
+    }
+
     @Override
     public ShortIterator iterator() {
         return new ShortSequenceIterator(getStart(), getEnd(), 1);