Added boost header

test/external/boost/lambda/detail/is_instance_of.hpp

@@ -0,0 +1,104 @@
+// Boost Lambda Library - is_instance_of.hpp ---------------------
+
+// Copyright (C) 2001 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi)
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// For more information, see www.boost.org
+
+// ---------------------------------------------------------------
+
+#ifndef BOOST_LAMBDA_IS_INSTANCE_OF
+#define BOOST_LAMBDA_IS_INSTANCE_OF
+
+#include "boost/config.hpp" // for BOOST_STATIC_CONSTANT
+#include "boost/type_traits/conversion_traits.hpp" // for is_convertible
+#include "boost/preprocessor/enum_shifted_params.hpp"
+#include "boost/preprocessor/repeat_2nd.hpp"
+
+// is_instance_of --------------------------------
+// 
+// is_instance_of_n<A, B>::value is true, if type A is 
+// an instantiation of a template B, or A derives from an instantiation 
+// of template B
+//
+// n is the number of template arguments for B
+// 
+// Example:
+// is_instance_of_2<std::istream, basic_stream>::value == true
+
+// The original implementation was somewhat different, with different versions
+// for different compilers. However, there was still a problem
+// with gcc.3.0.2 and 3.0.3 compilers, which didn't think regard
+// is_instance_of_N<...>::value was a constant.
+// John Maddock suggested the way around this problem by building 
+// is_instance_of templates using boost::is_convertible.
+// Now we only have one version of is_instance_of templates, which delagate
+// all the nasty compiler tricks to is_convertible. 
+
+#define BOOST_LAMBDA_CLASS(z, N,A) BOOST_PP_COMMA_IF(N) class
+#define BOOST_LAMBDA_CLASS_ARG(z, N,A) BOOST_PP_COMMA_IF(N) class A##N 
+#define BOOST_LAMBDA_ARG(z, N,A) BOOST_PP_COMMA_IF(N) A##N 
+
+#define BOOST_LAMBDA_CLASS_LIST(n, NAME) BOOST_PP_REPEAT(n, BOOST_LAMBDA_CLASS, NAME)
+
+#define BOOST_LAMBDA_CLASS_ARG_LIST(n, NAME) BOOST_PP_REPEAT(n, BOOST_LAMBDA_CLASS_ARG, NAME)
+
+#define BOOST_LAMBDA_ARG_LIST(n, NAME) BOOST_PP_REPEAT(n, BOOST_LAMBDA_ARG, NAME)
+
+namespace boost {
+namespace lambda {
+
+#define BOOST_LAMBDA_IS_INSTANCE_OF_TEMPLATE(INDEX)                         \
+                                                                            \
+namespace detail {                                                          \
+                                                                            \
+template <template<BOOST_LAMBDA_CLASS_LIST(INDEX,T)> class F>               \
+struct BOOST_PP_CAT(conversion_tester_,INDEX) {                             \
+  template<BOOST_LAMBDA_CLASS_ARG_LIST(INDEX,A)>                            \
+  BOOST_PP_CAT(conversion_tester_,INDEX)                                    \
+    (const F<BOOST_LAMBDA_ARG_LIST(INDEX,A)>&);                             \
+};                                                                          \
+                                                                            \
+} /* end detail */                                                          \
+                                                                            \
+template <class From, template <BOOST_LAMBDA_CLASS_LIST(INDEX,T)> class To> \
+struct BOOST_PP_CAT(is_instance_of_,INDEX)                                  \
+{                                                                           \
+ private:                                                                   \
+   typedef ::boost::is_convertible<                                         \
+     From,                                                                  \
+     BOOST_PP_CAT(detail::conversion_tester_,INDEX)<To>                     \
+   > helper_type;                                                           \
+                                                                            \
+public:                                                                     \
+  BOOST_STATIC_CONSTANT(bool, value = helper_type::value);                  \
+};
+
+
+#define BOOST_LAMBDA_HELPER(z, N, A) BOOST_LAMBDA_IS_INSTANCE_OF_TEMPLATE( BOOST_PP_INC(N) )
+
+// Generate the traits for 1-4 argument templates
+
+BOOST_PP_REPEAT_2ND(4,BOOST_LAMBDA_HELPER,FOO)
+
+#undef BOOST_LAMBDA_HELPER
+#undef BOOST_LAMBDA_IS_INSTANCE_OF_TEMPLATE
+#undef BOOST_LAMBDA_CLASS
+#undef BOOST_LAMBDA_ARG
+#undef BOOST_LAMBDA_CLASS_ARG
+#undef BOOST_LAMBDA_CLASS_LIST
+#undef BOOST_LAMBDA_ARG_LIST
+#undef BOOST_LAMBDA_CLASS_ARG_LIST
+
+} // lambda
+} // boost
+
+#endif
+
+
+
+
+