Merge branch 'PureAbstract-tuple_to_string' into develop

1 files changed, 78 insertions, 27 deletions

diff --git a/include/internal/catch_tostring.h b/include/internal/catch_tostring.h
index 1c30b203..6265cf20 100644
--- a/include/internal/catch_tostring.h
+++ b/include/internal/catch_tostring.h
@@ -21,12 +21,46 @@
 #include "catch_objc_arc.hpp"
 #endif
 
+#ifdef CATCH_CPP11_OR_GREATER
+#include <tuple>
+#include <type_traits>
+#endif
+
 namespace Catch {
 
 // Why we're here.
 template<typename T>
 std::string toString( T const& value );
 
+// Built in overloads
+
+std::string toString( std::string const& value );
+std::string toString( std::wstring const& value );
+std::string toString( const char* const value );
+std::string toString( char* const value );
+std::string toString( const wchar_t* const value );
+std::string toString( wchar_t* const value );
+std::string toString( int value );
+std::string toString( unsigned long value );
+std::string toString( unsigned int value );
+std::string toString( const double value );
+std::string toString( const float value );
+std::string toString( bool value );
+std::string toString( char value );
+std::string toString( signed char value );
+std::string toString( unsigned char value );
+
+#ifdef CATCH_CONFIG_CPP11_NULLPTR
+std::string toString( std::nullptr_t );
+#endif
+
+#ifdef __OBJC__
+    std::string toString( NSString const * const& nsstring );
+    std::string toString( NSString * CATCH_ARC_STRONG const& nsstring );
+    std::string toString( NSObject* const& nsObject );
+#endif
+
+  
 namespace Detail {
 
     extern std::string unprintableString;
@@ -166,6 +200,50 @@ std::string toString( std::vector<T,Allocator> const& v ) {
     return Detail::rangeToString( v.begin(), v.end() );
 }
 
+
+#ifdef CATCH_CPP11_OR_GREATER
+  /*
+    toString for tuples
+  */
+namespace TupleDetail {
+  template<
+      typename Tuple,
+      std::size_t N = 0,
+      bool = (N < std::tuple_size<Tuple>::value)
+      >
+  struct ElementPrinter {
+      static void print( const Tuple& tuple, std::ostream& os )
+      {
+          os << ( N ? ", " : " " )
+             << Catch::toString(std::get<N>(tuple));
+          ElementPrinter<Tuple,N+1>::print(tuple,os);
+      }
+  };
+
+  template<
+      typename Tuple,
+      std::size_t N
+      >
+  struct ElementPrinter<Tuple,N,false> {
+      static void print( const Tuple&, std::ostream& ) {}
+  };
+
+}
+
+template<typename ...Types>
+struct StringMaker<std::tuple<Types...>> {
+
+    static std::string convert( const std::tuple<Types...>& tuple )
+    {
+        std::ostringstream os;
+        os << '{';
+        TupleDetail::ElementPrinter<std::tuple<Types...>>::print( tuple, os );
+        os << " }";
+        return os.str();
+    }
+};
+#endif
+
 namespace Detail {
     template<typename T>
     std::string makeString( T const& value ) {
@@ -185,33 +263,6 @@ std::string toString( T const& value ) {
     return StringMaker<T>::convert( value );
 }
 
-// Built in overloads
-
-std::string toString( std::string const& value );
-std::string toString( std::wstring const& value );
-std::string toString( const char* const value );
-std::string toString( char* const value );
-std::string toString( const wchar_t* const value );
-std::string toString( wchar_t* const value );
-std::string toString( int value );
-std::string toString( unsigned long value );
-std::string toString( unsigned int value );
-std::string toString( const double value );
-std::string toString( const float value );
-std::string toString( bool value );
-std::string toString( char value );
-std::string toString( signed char value );
-std::string toString( unsigned char value );
-
-#ifdef CATCH_CONFIG_CPP11_NULLPTR
-std::string toString( std::nullptr_t );
-#endif
-
-#ifdef __OBJC__
-    std::string toString( NSString const * const& nsstring );
-    std::string toString( NSString * CATCH_ARC_STRONG const& nsstring );
-    std::string toString( NSObject* const& nsObject );
-#endif
 
     namespace Detail {
     template<typename InputIterator>