Added boost header

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

@@ -0,0 +1,74 @@
+// -- select_functions.hpp -- Boost Lambda Library --------------------------
+
+// Copyright (C) 1999, 2000 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 http://www.boost.org
+
+
+#ifndef BOOST_LAMBDA_SELECT_FUNCTIONS_HPP
+#define BOOST_LAMBDA_SELECT_FUNCTIONS_HPP
+
+namespace boost { 
+namespace lambda {
+namespace detail {
+
+
+// select functions -------------------------------
+template<class Any, CALL_TEMPLATE_ARGS>
+inline Any& select(Any& any, CALL_FORMAL_ARGS) { CALL_USE_ARGS; return any; }
+
+
+template<class Arg, CALL_TEMPLATE_ARGS>
+inline typename Arg::template sig<tuple<CALL_REFERENCE_TYPES> >::type
+select ( const lambda_functor<Arg>& op, CALL_FORMAL_ARGS ) { 
+  return op.template call<
+    typename Arg::template sig<tuple<CALL_REFERENCE_TYPES> >::type
+  >(CALL_ACTUAL_ARGS); 
+}
+template<class Arg, CALL_TEMPLATE_ARGS>
+inline typename Arg::template sig<tuple<CALL_REFERENCE_TYPES> >::type
+select ( lambda_functor<Arg>& op, CALL_FORMAL_ARGS) { 
+  return op.template call<
+    typename Arg::template sig<tuple<CALL_REFERENCE_TYPES> >::type
+  >(CALL_ACTUAL_ARGS); 
+}
+
+// ------------------------------------------------------------------------
+// select functions where the return type is explicitly given
+// Note: on many functions, this return type is just discarded.
+// The select functions are inside a class template, and the return type
+// is a class template argument.
+// The first implementation used function templates with an explicitly 
+// specified template parameter.
+// However, this resulted in ambiguous calls (at least with gcc 2.95.2 
+// and edg 2.44). Not sure whether the compilers were right or wrong. 
+  
+template<class RET> struct r_select {
+
+// Any == RET
+  template<class Any, CALL_TEMPLATE_ARGS>
+  static 
+  inline RET go (Any& any, CALL_FORMAL_ARGS) { CALL_USE_ARGS; return any; }
+
+
+  template<class Arg, CALL_TEMPLATE_ARGS> 
+  static 
+  inline RET go (const lambda_functor<Arg>& op, CALL_FORMAL_ARGS ) {
+    return op.template call<RET>(CALL_ACTUAL_ARGS); 
+  }
+  template<class Arg, CALL_TEMPLATE_ARGS> 
+  static 
+  inline RET go (lambda_functor<Arg>& op, CALL_FORMAL_ARGS ) { 
+    return op.template call<RET>(CALL_ACTUAL_ARGS); 
+  }
+};
+   
+} // namespace detail
+} // namespace lambda
+} // namespace boost
+
+#endif