Tidy up use of FFI and custom types. (#65)

* Tidy up use of types.
* Remove stray meta call for yard doc.

Author: seanhandley

lib/h3/bindings/base.rb

@@ -12,11 +12,7 @@ def self.extended(base)
         base.include Types
         base.ffi_lib ["#{lib_path}/libh3.dylib", "#{lib_path}/libh3.so"]
         base.typedef :ulong_long, :h3_index
-        base.typedef :int, :size
         base.typedef :int, :k_distance
-        base.typedef :pointer, :h3_set
-        base.typedef :pointer, :output_buffer
-        base.const_set("H3_INDEX", :ulong_long)
       end
 
       def attach_predicate_function(name, *args)

lib/h3/bindings/private.rb

@@ -7,11 +7,11 @@ module Bindings
     module Private
       extend H3::Bindings::Base
 
-      attach_function :compact, [H3IndexesIn, H3IndexesOut, :size], :bool
+      attach_function :compact, [H3IndexesIn, H3IndexesOut, :size_t], :bool
       attach_function :destroy_linked_polygon, :destroyLinkedPolygon, [LinkedGeoPolygon], :void
       attach_function :geo_to_h3, :geoToH3, [GeoCoord, Resolution], :h3_index
       attach_function :get_pentagon_indexes, :getPentagonIndexes, [:int, H3IndexesOut], :void
-      attach_function :h3_faces, :h3GetFaces, %i[h3_index output_buffer], :void
+      attach_function :h3_faces, :h3GetFaces, %i[h3_index buffer_out], :void
       attach_function :h3_indexes_from_unidirectional_edge,
                       :getH3IndexesFromUnidirectionalEdge,
                       [:h3_index, H3IndexesOut], :void
@@ -21,11 +21,11 @@ module Private
                       [:h3_index, H3IndexesOut], :void
       attach_function :h3_set_to_linked_geo,
                       :h3SetToLinkedGeo,
-                      [H3IndexesIn, :size, LinkedGeoPolygon],
+                      [H3IndexesIn, :size_t, LinkedGeoPolygon],
                       :void
       attach_function :h3_to_children, :h3ToChildren, [:h3_index, Resolution, H3IndexesOut], :void
       attach_function :h3_to_geo, :h3ToGeo, [:h3_index, GeoCoord], :void
-      attach_function :h3_to_string, :h3ToString, %i[h3_index output_buffer size], :void
+      attach_function :h3_to_string, :h3ToString, %i[h3_index buffer_out size_t], :void
       attach_function :h3_to_geo_boundary,
                       :h3ToGeoBoundary,
                       [:h3_index, GeoBoundary],
@@ -36,25 +36,25 @@ module Private
       attach_function :hex_range, :hexRange, [:h3_index, :k_distance, H3IndexesOut], :bool
       attach_function :hex_range_distances,
                       :hexRangeDistances,
-                      [:h3_index, :k_distance, H3IndexesOut, :output_buffer], :bool
+                      [:h3_index, :k_distance, H3IndexesOut, :buffer_out], :bool
       attach_function :hex_ranges,
                       :hexRanges,
-                      [H3IndexesIn, :size, :k_distance, H3IndexesOut],
+                      [H3IndexesIn, :size_t, :k_distance, H3IndexesOut],
                       :bool
       attach_function :hex_ring, :hexRing, [:h3_index, :k_distance, H3IndexesOut], :bool
       attach_function :k_ring, :kRing, [:h3_index, :k_distance, H3IndexesOut], :void
       attach_function :k_ring_distances,
                       :kRingDistances,
-                      [:h3_index, :k_distance, H3IndexesOut, :output_buffer],
+                      [:h3_index, :k_distance, H3IndexesOut, :buffer_out],
                       :bool
       attach_function :max_polyfill_size,
                       :maxPolyfillSize,
                       [GeoPolygon, Resolution],
                       :int
-      attach_function :max_uncompact_size, :maxUncompactSize, [H3IndexesIn, :size, Resolution], :int
+      attach_function :max_uncompact_size, :maxUncompactSize, [H3IndexesIn, :size_t, Resolution], :int
       attach_function :polyfill, [GeoPolygon, Resolution, H3IndexesOut], :void
       attach_function :res_0_indexes, :getRes0Indexes, [H3IndexesOut], :void
-      attach_function :uncompact, [H3IndexesIn, :size, H3IndexesOut, :size, Resolution], :bool
+      attach_function :uncompact, [H3IndexesIn, :size_t, H3IndexesOut, :size_t, Resolution], :bool
     end
   end
 end

lib/h3/inspection.rb

@@ -157,8 +157,6 @@ def h3_to_string(h3_index)
     # @return [Integer] Maximum possible number of faces
     attach_function :max_face_count, :maxFaceCount, %i[h3_index], :int
 
-    # @!method faces(h3_index)
-    #
     # Find all icosahedron faces intersected by a given H3 index.
     #
     # @param [Integer] h3_index A H3 index.