add docs for range

cpp/include/cuspatial/experimental/ranges/range.cuh

@@ -23,6 +23,21 @@
 
 namespace cuspatial {
 
+/**
+ * @brief Abstract Data Type (ADT) for any containers representable with a start and end iterator.
+ *
+ * This is similar to a span, except that the iterators can be composed of generators.
+ *
+ * @note Although this structure can be used on device and host code, this structure does not
+ * provide implicit device-host transfer. It is up to developer's prudence not to access device
+ * memory from host.
+ *
+ * @tparam Type of both start and end iterator. IteratorType must statisfy
+ * LegacyRandomAccessIterator[LinkLRAI].
+ *
+ * [LinkLRAI]: https://en.cppreference.com/w/cpp/named_req/RandomAccessIterator
+ * "LegacyRandomAccessIterator"
+ */
 template <typename IteratorType>
 class range {
  public:

cpp/include/doxygen_groups.h

@@ -114,10 +114,12 @@
  *      @}
  *      @defgroup ranges Ranges
  *      @{
- *          @brief Non owning object of geometry arrays
+ *          @brief Abstract Data Type that Represents any containers represented by a start and end
+ *          iterator
  *
  *          Cuspatial header only APIs accepts ranges that are composed of flattened view of
  *          offsets and coordinates. Various accessors are provided for flexible access to the data.
+ *          @file range.cuh
  *          @file multipoint_range.cuh
  *          @file multilinestring_range.cuh
  *      @}