Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/boost/libs/proto/example/hello.cpp b/src/boost/libs/proto/example/hello.cpp
new file mode 100644
index 00000000..4b9cd99b
--- /dev/null
+++ b/src/boost/libs/proto/example/hello.cpp
@@ -0,0 +1,28 @@
+//[ HelloWorld
+////////////////////////////////////////////////////////////////////
+//  Copyright 2008 Eric Niebler. 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)
+
+#include <iostream>
+#include <boost/proto/core.hpp>
+#include <boost/proto/context.hpp>
+// This #include is only needed for compilers that use typeof emulation:
+#include <boost/typeof/std/ostream.hpp>
+namespace proto = boost::proto;
+
+proto::terminal< std::ostream & >::type cout_ = {std::cout};
+
+template< typename Expr >
+void evaluate( Expr const & expr )
+{
+    proto::default_context ctx;
+    proto::eval(expr, ctx);
+}
+
+int main()
+{
+    evaluate( cout_ << "hello" << ',' << " world" );
+    return 0;
+}
+//]