59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
|
|
// 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
|
|
|