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| author | Lorry Tar Creator <lorry-tar-importer@baserock.org> | 2013-06-25 22:59:01 +0000 |
|---|---|---|
| committer | <> | 2013-09-27 11:49:28 +0000 |
| commit | 8c4528713d907ee2cfd3bfcbbad272c749867f84 (patch) | |
| tree | c09e2ce80f47b90c85cc720f5139089ad9c8cfff /libs/local_function/example/const_block.hpp | |
| download | boost-tarball-baserock/morph.tar.gz | |
Imported from /home/lorry/working-area/delta_boost-tarball/boost_1_54_0.tar.bz2.boost_1_54_0baserock/morph
Diffstat (limited to 'libs/local_function/example/const_block.hpp')
| -rw-r--r-- | libs/local_function/example/const_block.hpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libs/local_function/example/const_block.hpp b/libs/local_function/example/const_block.hpp new file mode 100644 index 000000000..904273410 --- /dev/null +++ b/libs/local_function/example/const_block.hpp @@ -0,0 +1,58 @@ + +// 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 + +#ifndef CONST_BLOCK_HPP_ +#define CONST_BLOCK_HPP_ + +#include <boost/local_function.hpp> +#include <boost/local_function/detail/preprocessor/void_list.hpp> +#include <boost/local_function/detail/preprocessor/line_counter.hpp> +#include <boost/preprocessor/list/for_each_i.hpp> +#include <boost/preprocessor/list/adt.hpp> +#include <boost/preprocessor/tuple/eat.hpp> +#include <boost/preprocessor/punctuation/comma_if.hpp> +#include <boost/preprocessor/control/iif.hpp> +#include <boost/preprocessor/cat.hpp> + +// PRIVATE // + +#define CONST_BLOCK_BIND_(r, unused, i, var) \ + BOOST_PP_COMMA_IF(i) const bind& var + +//[const_block_macro +#define CONST_BLOCK_(variables) \ + void BOOST_LOCAL_FUNCTION( \ + BOOST_PP_IIF(BOOST_PP_LIST_IS_NIL(variables), \ + void BOOST_PP_TUPLE_EAT(3) \ + , \ + BOOST_PP_LIST_FOR_EACH_I \ + )(CONST_BLOCK_BIND_, ~, variables) \ + ) +//] + +//[const_block_end_macro +#define CONST_BLOCK_END_(id) \ + BOOST_LOCAL_FUNCTION_NAME(BOOST_PP_CAT(const_block_, id)) \ + BOOST_PP_CAT(const_block_, id)(); /* call local function immediately */ +//] + +// PUBLIC // + +// Arguments `void | var1, var2, ... | (var1) (var2) ...`. +#ifdef BOOST_NO_CXX11_VARIADIC_MACROS +# define CONST_BLOCK(void_or_seq) \ + CONST_BLOCK_(BOOST_LOCAL_FUNCTION_DETAIL_PP_VOID_LIST(void_or_seq)) +#else +# define CONST_BLOCK(...) \ + CONST_BLOCK_(BOOST_LOCAL_FUNCTION_DETAIL_PP_VOID_LIST(__VA_ARGS__)) +#endif + +#define CONST_BLOCK_END \ + CONST_BLOCK_END_(BOOST_LOCAL_FUNCTION_DETAIL_PP_LINE_COUNTER) + +#endif // #include guard + |