[Boost-commit] svn:boost r80922 - in trunk/boost/geometry: algorithms multi/algorithms

Subject: [Boost-commit] svn:boost r80922 - in trunk/boost/geometry: algorithms multi/algorithms
From: bruno.lalande_at_[hidden]
Date: 2012-10-09 19:19:55

Author: bruno.lalande
Date: 2012-10-09 19:19:54 EDT (Tue, 09 Oct 2012)
New Revision: 80922
URL: http://svn.boost.org/trac/boost/changeset/80922

Log:
Made dispatch::for_each able to retrieve the tag by itself.
Text files modified: 
   trunk/boost/geometry/algorithms/for_each.hpp       |    36 ++++++++++++++----------------------    
   trunk/boost/geometry/multi/algorithms/for_each.hpp |    12 ++----------                            
   2 files changed, 16 insertions(+), 32 deletions(-)

Modified: trunk/boost/geometry/algorithms/for_each.hpp
==============================================================================
--- trunk/boost/geometry/algorithms/for_each.hpp	(original)
+++ trunk/boost/geometry/algorithms/for_each.hpp	2012-10-09 19:19:54 EDT (Tue, 09 Oct 2012)
@@ -148,63 +148,63 @@
 
 template
 <
-    typename Tag,
-    typename Geometry
+    typename Geometry,
+    typename Tag = typename tag_cast<typename tag<Geometry>::type, multi_tag>::type
 >
 struct for_each_point {};
 
 
 template <typename Point>
-struct for_each_point<point_tag, Point>
+struct for_each_point<Point, point_tag>
     : detail::for_each::fe_point_per_point
 {};
 
 
 template <typename Linestring>
-struct for_each_point<linestring_tag, Linestring>
+struct for_each_point<Linestring, linestring_tag>
     : detail::for_each::fe_range_per_point
 {};
 
 
 template <typename Ring>
-struct for_each_point<ring_tag, Ring>
+struct for_each_point<Ring, ring_tag>
     : detail::for_each::fe_range_per_point
 {};
 
 
 template <typename Polygon>
-struct for_each_point<polygon_tag, Polygon>
+struct for_each_point<Polygon, polygon_tag>
     : detail::for_each::fe_polygon_per_point
 {};
 
 
 template
 <
-    typename Tag,
-    typename Geometry
+    typename Geometry,
+    typename Tag = typename tag_cast<typename tag<Geometry>::type, multi_tag>::type
 >
 struct for_each_segment {};
 
 template <typename Point>
-struct for_each_segment<point_tag, Point>
+struct for_each_segment<Point, point_tag>
     : detail::for_each::fe_point_per_segment
 {};
 
 
 template <typename Linestring>
-struct for_each_segment<linestring_tag, Linestring>
+struct for_each_segment<Linestring, linestring_tag>
     : detail::for_each::fe_range_per_segment
 {};
 
 
 template <typename Ring>
-struct for_each_segment<ring_tag, Ring>
+struct for_each_segment<Ring, ring_tag>
     : detail::for_each::fe_range_per_segment
 {};
 
 
 template <typename Polygon>
-struct for_each_segment<polygon_tag, Polygon>
+struct for_each_segment<Polygon, polygon_tag>
     : detail::for_each::fe_polygon_per_segment
 {};
 
@@ -232,11 +232,7 @@
 {
     concept::check<Geometry>();
 
-    return dispatch::for_each_point
-        <
-            typename tag_cast<typename tag<Geometry>::type, multi_tag>::type,
-            Geometry
-        >::apply(geometry, f);
+    return dispatch::for_each_point<Geometry>::apply(geometry, f);
 }
 
 
@@ -258,11 +254,7 @@
 {
     concept::check<Geometry>();
 
-    return dispatch::for_each_segment
-        <
-            typename tag_cast<typename tag<Geometry>::type, multi_tag>::type,
-            Geometry
-        >::apply(geometry, f);
+    return dispatch::for_each_segment<Geometry>::apply(geometry, f);
 }
 
 

Modified: trunk/boost/geometry/multi/algorithms/for_each.hpp
==============================================================================
--- trunk/boost/geometry/multi/algorithms/for_each.hpp	(original)
+++ trunk/boost/geometry/multi/algorithms/for_each.hpp	2012-10-09 19:19:54 EDT (Tue, 09 Oct 2012)
@@ -60,16 +60,12 @@
 {
 
 template <typename MultiGeometry>
-struct for_each_point<multi_tag, MultiGeometry>
+struct for_each_point<MultiGeometry, multi_tag>
     : detail::for_each::for_each_multi
         <
             // Specify the dispatch of the single-version as policy
             for_each_point
                 <
-                    typename single_tag_of
-                        <
-                            typename tag<MultiGeometry>::type
-                        >::type,
                     typename add_const_if_c
                         <
                             is_const<MultiGeometry>::value,
@@ -81,16 +77,12 @@
 
 
 template <typename MultiGeometry>
-struct for_each_segment<multi_tag, MultiGeometry>
+struct for_each_segment<MultiGeometry, multi_tag>
     : detail::for_each::for_each_multi
         <
             // Specify the dispatch of the single-version as policy
             for_each_segment
                 <
-                    typename single_tag_of
-                        <
-                            typename tag<MultiGeometry>::type
-                        >::type,
                     typename add_const_if_c
                         <
                             is_const<MultiGeometry>::value,