Add method add_range

This functionnality was already available with:
    bm.update(range(start, end))
This is probably better to also have the method add_range, for
consistency with methods remove_range and contains_range.

Author: Ezibenroc

pyroaring/bitmap.pxi

@@ -59,7 +59,7 @@ cdef class BitMap(AbstractBitMap):
                     step = 1
                     start, stop = stop+1, start+1
                 if step == 1:
-                    croaring.roaring_bitmap_add_range(self._c_bitmap, start, stop)
+                    self.add_range(start, stop)
                 else:
                     self |= AbstractBitMap(values, copy_on_write=self.copy_on_write)
             elif isinstance(values, array.array) and len(values) > 0:
@@ -129,6 +129,17 @@ cdef class BitMap(AbstractBitMap):
         """
         croaring.roaring_bitmap_flip_inplace(self._c_bitmap, start, end)
 
+    def add_range(self, uint64_t range_start, uint64_t range_end):
+        """
+        Add a range of values from range_start (included) to range_end (excluded).
+
+        >>> bm = BitMap([5, 7])
+        >>> bm.add_range(6, 9)
+        >>> bm
+        BitMap([5, 6, 7, 8])
+        """
+        croaring.roaring_bitmap_add_range(self._c_bitmap, range_start, range_end)
+
     def remove_range(self, uint64_t range_start, uint64_t range_end):
         """
         Remove a range of values from range_start (included) to range_end (excluded).

test.py

@@ -430,12 +430,12 @@ def test_add_remove_range(self, values, cow, start, end):
         bm = BitMap(values, copy_on_write=cow)
         # Empty range
         original = BitMap(bm)
-        bm.update(range(end, start))
+        bm.add_range(end, start)
         self.assertEqual(bm, original)
         bm.remove_range(end, start)
         self.assertEqual(bm, original)
         # Adding the range
-        bm.update(range(start, end))
+        bm.add_range(start, end)
         self.assertTrue(bm.contains_range(start, end))
         self.assertEqual(bm.intersection_cardinality(BitMap(range(start, end), copy_on_write=cow)),
                          len(range(start, end)))