Merged ScopeExit (improved), LocalFunction (new), Functional/OverloadedFunction (new), and Utility/IdentityType (new) from trunk into release branch.

[SVN r78564]

overloaded_function/test/Jamfile.v2

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+
+# 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/functional/overloaded_function
+
+import testing ;
+
+# Sun does not automatically detect type-of emulation (force it).
+project : requirements <toolset>sun:<define>BOOST_TYPEOF_EMULATION ;
+
+run functor.cpp ;
+run make_decl.cpp ;
+run make_call.cpp ;
+

overloaded_function/test/functor.cpp

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+
+// 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/functional/overloaded_function
+
+#include "identity.hpp"
+#include <boost/functional/overloaded_function.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+int main() {
+    //[identity_calls
+    BOOST_TEST(identity_s("abc") == "abc");
+    BOOST_TEST(identity_i(123) == 123);
+    BOOST_TEST(identity_d(1.23) == 1.23);
+    //]
+
+    //[identity_functor
+    boost::overloaded_function<
+          const std::string& (const std::string&)
+        , int (int)
+        , double (double)
+    > identity(identity_s, identity_i, identity_d);
+
+    // All calls via single `identity` function.
+    BOOST_TEST(identity("abc") == "abc");
+    BOOST_TEST(identity(123) == 123);
+    BOOST_TEST(identity(1.23) == 1.23);
+    //]
+
+    return boost::report_errors();
+}
+

overloaded_function/test/identity.hpp

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+
+// 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/functional/overloaded_function
+
+#ifndef IDENTITY_HPP_
+#define IDENTITY_HPP_
+
+//[identity_typeof
+#include <boost/typeof/std/string.hpp> // No need to register `boost::function`.
+//]
+#include <boost/function.hpp>
+#include <string>
+
+//[identity_decls
+const std::string& identity_s(const std::string& x) // Function (as pointer).
+    { return x; }
+
+int identity_i_impl(int x) { return x; }
+int (&identity_i)(int) = identity_i_impl; // Function reference.
+
+double identity_d_impl(double x) { return x; }
+boost::function<double (double)> identity_d = identity_d_impl; // Functor.
+//]
+
+#endif // #include guard
+

overloaded_function/test/make_call.cpp

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+
+// 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/functional/overloaded_function
+
+#include "identity.hpp"
+#include <boost/functional/overloaded_function.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+//[identity_make_checks
+template<typename F>
+void check(F identity) {
+    BOOST_TEST(identity("abc") == "abc");
+    BOOST_TEST(identity(123) == 123);
+    BOOST_TEST(identity(1.23) == 1.23);
+}
+//]
+
+int main() {
+    //[identity_make_call
+    check(boost::make_overloaded_function(identity_s, identity_i, identity_d));
+    //]
+    return boost::report_errors();
+}
+

overloaded_function/test/make_decl.cpp

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+
+// 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/functional/overloaded_function
+
+#include "identity.hpp"
+#include <boost/functional/overloaded_function.hpp>
+#include <boost/typeof/typeof.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+int main() {
+    //[identity_make_decl
+    BOOST_AUTO(identity, boost::make_overloaded_function(
+            identity_s, identity_i, identity_d));
+
+    BOOST_TEST(identity("abc") == "abc");
+    BOOST_TEST(identity(123) == 123);
+    BOOST_TEST(identity(1.23) == 1.23);
+    //]
+    return boost::report_errors();
+}
+