[Boost-commit] svn:boost r78380 - trunk/libs/local_function/test

Subject: [Boost-commit] svn:boost r78380 - trunk/libs/local_function/test
From: lorcaminiti_at_[hidden]
Date: 2012-05-08 13:53:42

Author: lcaminiti
Date: 2012-05-08 13:53:41 EDT (Tue, 08 May 2012)
New Revision: 78380
URL: http://svn.boost.org/trac/boost/changeset/78380

Log:
Added a test to verify all compilers for which local classes can be passed as template parameters (for faster local function calls).\
Added:
   trunk/libs/local_function/test/locals_as_tparams.cpp   (contents, props changed)
Text files modified: 
   trunk/libs/local_function/test/Jamfile.v2 |     1 +                                       
   1 files changed, 1 insertions(+), 0 deletions(-)

Modified: trunk/libs/local_function/test/Jamfile.v2
==============================================================================
--- trunk/libs/local_function/test/Jamfile.v2	(original)
+++ trunk/libs/local_function/test/Jamfile.v2	2012-05-08 13:53:41 EDT (Tue, 08 May 2012)
@@ -31,6 +31,7 @@
 vaseq run factorial ;
 vaseq run goto ;
 vaseq compile-fail goto_error ;
+run locals_as_tparams.cpp ;
 vaseq run macro_commas ;
 vaseq run nesting ;
 vaseq run operator ;

Added: trunk/libs/local_function/test/locals_as_tparams.cpp
==============================================================================
--- (empty file)
+++ trunk/libs/local_function/test/locals_as_tparams.cpp	2012-05-08 13:53:41 EDT (Tue, 08 May 2012)
@@ -0,0 +1,34 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/local_function
+
+#include <boost/local_function.hpp>
+
+// This test make sure that compilers for which local classes are expected to
+// be valid template parameters indeed support such functionality.
+// This feature is enabled by both BOOST_LOCAL_FUNCTION_CONFIG_LOCALS_AS_TPARAMS
+// and Boost.Config's BOOST_NO_LOCAL_CLASS_TEMPLATE_PARAMETERS. When supported,
+// this feature is used to speed-up local function calls. This feature is
+// supported by all standard C++11 compilers and some C++03 compilers as an
+// extension (but not by the C++03 standard).
+#if BOOST_LOCAL_FUNCTION_CONFIG_LOCALS_AS_TPARAMS
+#   define LOCALS_AS_TPARAMS_TFUNC call_expected_to_pass
+#   define LOCALS_AS_TPARAMS_TCLASS instantiation_expected_to_pass
+#else
+#   define LOCALS_AS_TPARAMS_TFUNC call_exptected_to_fail
+#   define LOCALS_AS_TPARAMS_TCLASS instantiation_expected_to_fail
+#endif
+
+template<typename T> struct LOCALS_AS_TPARAMS_TCLASS { void use(void) {} };
+template<typename T> void LOCALS_AS_TPARAMS_TFUNC(T) {}
+
+int main(void) {
+    struct local_class {} local_obj;
+    LOCALS_AS_TPARAMS_TCLASS<local_class>().use();
+    LOCALS_AS_TPARAMS_TFUNC(local_obj);
+    return 0;
+}
+