[Boost-commit] svn:boost r52399 - sandbox/numeric_bindings/boost/numeric/bindings/traits

Subject: [Boost-commit] svn:boost r52399 - sandbox/numeric_bindings/boost/numeric/bindings/traits
From: rutger_at_[hidden]
Date: 2009-04-15 06:25:40

Author: rutger
Date: 2009-04-15 06:25:39 EDT (Wed, 15 Apr 2009)
New Revision: 52399
URL: http://svn.boost.org/trac/boost/changeset/52399

Log:
Initial working version of is_bindable_vector and is_bindable_matrix metafunctions

Text files modified: 
   sandbox/numeric_bindings/boost/numeric/bindings/traits/is_bindable_matrix.hpp |    17 ++++++++++++++++-                       
   sandbox/numeric_bindings/boost/numeric/bindings/traits/is_bindable_vector.hpp |    18 +++++++++++++++++-                      
   2 files changed, 33 insertions(+), 2 deletions(-)

Modified: sandbox/numeric_bindings/boost/numeric/bindings/traits/is_bindable_matrix.hpp
==============================================================================
--- sandbox/numeric_bindings/boost/numeric/bindings/traits/is_bindable_matrix.hpp	(original)
+++ sandbox/numeric_bindings/boost/numeric/bindings/traits/is_bindable_matrix.hpp	2009-04-15 06:25:39 EDT (Wed, 15 Apr 2009)
@@ -10,6 +10,7 @@
 #define BOOST_NUMERIC_BINDINGS_TRAITS_IS_BINDABLE_MATRIX_HPP
 
 #include <boost/mpl/bool.hpp>
+#include <boost/numeric/bindings/traits/matrix_traits.hpp>
 
 namespace boost {
 namespace numeric {
@@ -17,7 +18,21 @@
 namespace traits {
 
 template< typename T >
-struct is_bindable_matrix: boost::mpl::bool_<false> {};
+struct is_bindable_matrix {
+
+    typedef char yes;
+    typedef char (&no)[2];
+
+    template< typename M >
+    static yes tester( typename matrix_traits<M>::pointer );
+
+    template< typename M >
+    static no tester( ... );
+
+    static bool const value = sizeof(tester<T>(0)) == sizeof(yes);
+
+    typedef mpl::bool_<value> type;
+};
 
 }}}}
 

Modified: sandbox/numeric_bindings/boost/numeric/bindings/traits/is_bindable_vector.hpp
==============================================================================
--- sandbox/numeric_bindings/boost/numeric/bindings/traits/is_bindable_vector.hpp	(original)
+++ sandbox/numeric_bindings/boost/numeric/bindings/traits/is_bindable_vector.hpp	2009-04-15 06:25:39 EDT (Wed, 15 Apr 2009)
@@ -10,6 +10,7 @@
 #define BOOST_NUMERIC_BINDINGS_TRAITS_IS_BINDABLE_VECTOR_HPP
 
 #include <boost/mpl/bool.hpp>
+#include <boost/numeric/bindings/traits/vector_traits.hpp>
 
 namespace boost {
 namespace numeric {
@@ -17,7 +18,22 @@
 namespace traits {
 
 template< typename T >
-struct is_bindable_vector: boost::mpl::bool_<false> {};
+struct is_bindable_vector {
+
+    typedef char yes;
+    typedef char (&no)[2];
+    struct other_type;
+
+    template< typename V >
+    static yes tester( typename vector_traits<V>::pointer );
+
+    template< typename V >
+    static no tester( ... );
+
+    static bool const value = sizeof(tester<T>(0)) == sizeof(yes);
+
+    typedef mpl::bool_<value> type;
+};
 
 }}}}