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Added variadic is_empty and is_begin_parens along with tests.

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This commit is contained in:
Edward Diener
2014-04-28 19:24:42 -04:00
parent 0a23b4d6a6
commit d2bfda8308
13 changed files with 375 additions and 1 deletions
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55
include/boost/preprocessor/facilities/detail/is_empty.hpp Normal file
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@ -0,0 +1,55 @@
# /* **************************************************************************
# * *
# * (C) Copyright Edward Diener 2014.
# * 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)
# * *
# ************************************************************************** */
#
# /* See http://www.boost.org for most recent version. */
#
#ifndef BOOST_PREPROCESSOR_DETAIL_IS_EMPTY_HPP
#define BOOST_PREPROCESSOR_DETAIL_IS_EMPTY_HPP
#include <boost/preprocessor/punctuation/is_begin_parens.hpp>
#if BOOST_PP_VARIADICS_MSVC
# pragma warning(once:4002)
#define BOOST_PP_DETAIL_IS_EMPTY_IIF_0(t, b) b
#define BOOST_PP_DETAIL_IS_EMPTY_IIF_1(t, b) t
#else
#define BOOST_PP_DETAIL_IS_EMPTY_IIF_0(t, ...) __VA_ARGS__
#define BOOST_PP_DETAIL_IS_EMPTY_IIF_1(t, ...) t
#endif
#if BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400
#define BOOST_PP_DETAIL_IS_EMPTY_PROCESS(param) \
BOOST_PP_IS_BEGIN_PARENS \
( \
BOOST_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C param () \
) \
/**/
#else
#define BOOST_PP_DETAIL_IS_EMPTY_PROCESS(...) \
BOOST_PP_IS_BEGIN_PARENS \
( \
BOOST_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C __VA_ARGS__ () \
) \
/**/
#endif
#define BOOST_PP_DETAIL_IS_EMPTY_PRIMITIVE_CAT(a, b) a ## b
#define BOOST_PP_DETAIL_IS_EMPTY_IIF(bit) BOOST_PP_DETAIL_IS_EMPTY_PRIMITIVE_CAT(BOOST_PP_DETAIL_IS_EMPTY_IIF_,bit)
#define BOOST_PP_DETAIL_IS_EMPTY_NON_FUNCTION_C(...) ()
#endif /* BOOST_PREPROCESSOR_DETAIL_IS_EMPTY_HPP */

13
include/boost/preprocessor/facilities/is_empty.hpp
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@ -1,6 +1,7 @@
# /* **************************************************************************
# * *
# * (C) Copyright Paul Mensonides 2003.
# * (C) Copyright Edward Diener 2014.
# * 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)
@ -13,6 +14,14 @@
# define BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_HPP
#
# include <boost/preprocessor/config/config.hpp>
#
# if BOOST_PP_VARIADICS
#
# include <boost/preprocessor/facilities/is_empty_variadic.hpp>
#
# else
#
# include <boost/preprocessor/config/config.hpp>
# include <boost/preprocessor/cat.hpp>
# include <boost/preprocessor/tuple/elem.hpp>
# include <boost/preprocessor/facilities/empty.hpp>
@ -40,4 +49,6 @@
# define BOOST_PP_IS_EMPTY_DEF_BOOST_PP_IS_EMPTY_HELPER 0, BOOST_PP_NIL
# endif
#
# endif
# endif /* BOOST_PP_VARIADICS */
#
# endif /* BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_HPP */

56
include/boost/preprocessor/facilities/is_empty_variadic.hpp Normal file
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@ -0,0 +1,56 @@
# /* **************************************************************************
# * *
# * (C) Copyright Edward Diener 2014.
# * 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)
# * *
# ************************************************************************** */
#
# /* See http://www.boost.org for most recent version. */
#
# ifndef BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_VARIADIC_HPP
# define BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_VARIADIC_HPP
#
# include <boost/preprocessor/config/config.hpp>
#
# if BOOST_PP_VARIADICS
#
# include <boost/preprocessor/punctuation/is_begin_parens.hpp>
# include <boost/preprocessor/facilities/detail/is_empty.hpp>
#
#define BOOST_PP_IS_EMPTY_GEN_ZERO(...) 0
#if BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400
#
#define BOOST_PP_IS_EMPTY(param) \
BOOST_PP_DETAIL_IS_EMPTY_IIF \
( \
BOOST_PP_IS_BEGIN_PARENS \
( \
param \
) \
) \
( \
BOOST_PP_IS_EMPTY_GEN_ZERO, \
BOOST_PP_DETAIL_IS_EMPTY_PROCESS \
) \
(param) \
/**/
# else
#define BOOST_PP_IS_EMPTY(...) \
BOOST_PP_DETAIL_IS_EMPTY_IIF \
( \
BOOST_PP_IS_BEGIN_PARENS \
( \
__VA_ARGS__ \
) \
) \
( \
BOOST_PP_IS_EMPTY_GEN_ZERO, \
BOOST_PP_DETAIL_IS_EMPTY_PROCESS \
) \
(__VA_ARGS__) \
/**/
# endif /* BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400 */
# endif /* BOOST_PP_VARIADICS */
# endif /* BOOST_PREPROCESSOR_FACILITIES_IS_EMPTY_VARIADIC_HPP */

1
include/boost/preprocessor/punctuation.hpp
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@ -14,6 +14,7 @@
#
# include <boost/preprocessor/punctuation/comma.hpp>
# include <boost/preprocessor/punctuation/comma_if.hpp>
# include <boost/preprocessor/punctuation/is_begin_parens.hpp>
# include <boost/preprocessor/punctuation/paren.hpp>
# include <boost/preprocessor/punctuation/paren_if.hpp>
#

48
include/boost/preprocessor/punctuation/detail/is_begin_parens.hpp Normal file
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@ -0,0 +1,48 @@
# /* **************************************************************************
# * *
# * (C) Copyright Edward Diener 2014.
# * 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)
# * *
# ************************************************************************** */
#
# /* See http://www.boost.org for most recent version. */
#
#ifndef BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP
#define BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP
#if BOOST_PP_VARIADICS_MSVC
#include <boost/preprocessor/facilities/empty.hpp>
#define BOOST_PP_DETAIL_VD_IBP_CAT(a, b) BOOST_PP_DETAIL_VD_IBP_CAT_I(a, b)
#define BOOST_PP_DETAIL_VD_IBP_CAT_I(a, b) BOOST_PP_DETAIL_VD_IBP_CAT_II(a ## b)
#define BOOST_PP_DETAIL_VD_IBP_CAT_II(res) res
#define BOOST_PP_DETAIL_IBP_SPLIT(i, ...) \
BOOST_PP_DETAIL_VD_IBP_CAT(BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(BOOST_PP_DETAIL_IBP_SPLIT_,i)(__VA_ARGS__),BOOST_PP_EMPTY()) \
/**/
#define BOOST_PP_DETAIL_IBP_IS_VARIADIC_C(...) 1 1
#else
#define BOOST_PP_DETAIL_IBP_SPLIT(i, ...) \
BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(BOOST_PP_DETAIL_IBP_SPLIT_,i)(__VA_ARGS__) \
/**/
#define BOOST_PP_DETAIL_IBP_IS_VARIADIC_C(...) 1
#endif /* BOOST_PP_VARIADICS_MSVC */
#define BOOST_PP_DETAIL_IBP_SPLIT_0(a, ...) a
#define BOOST_PP_DETAIL_IBP_SPLIT_1(a, ...) __VA_ARGS__
#define BOOST_PP_DETAIL_IBP_CAT(a, ...) BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(a,__VA_ARGS__)
#define BOOST_PP_DETAIL_IBP_PRIMITIVE_CAT(a, ...) a ## __VA_ARGS__
#define BOOST_PP_DETAIL_IBP_IS_VARIADIC_R_1 1,
#define BOOST_PP_DETAIL_IBP_IS_VARIADIC_R_BOOST_PP_DETAIL_IBP_IS_VARIADIC_C 0,
#endif /* BOOST_PREPROCESSOR_DETAIL_IS_BEGIN_PARENS_HPP */

51
include/boost/preprocessor/punctuation/is_begin_parens.hpp Normal file
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@ -0,0 +1,51 @@
# /* **************************************************************************
# * *
# * (C) Copyright Edward Diener 2014.
# * 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)
# * *
# ************************************************************************** */
#
# /* See http://www.boost.org for most recent version. */
#
# ifndef BOOST_PREPROCESSOR_IS_BEGIN_PARENS_HPP
# define BOOST_PREPROCESSOR_IS_BEGIN_PARENS_HPP
# include <boost/preprocessor/config/config.hpp>
#if BOOST_PP_VARIADICS
#include <boost/preprocessor/punctuation/detail/is_begin_parens.hpp>
#if BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400
#define BOOST_PP_IS_BEGIN_PARENS(param) \
BOOST_PP_DETAIL_IBP_SPLIT \
( \
0, \
BOOST_PP_DETAIL_IBP_CAT \
( \
BOOST_PP_DETAIL_IBP_IS_VARIADIC_R_, \
BOOST_PP_DETAIL_IBP_IS_VARIADIC_C param \
) \
) \
/**/
#else
#define BOOST_PP_IS_BEGIN_PARENS(...) \
BOOST_PP_DETAIL_IBP_SPLIT \
( \
0, \
BOOST_PP_DETAIL_IBP_CAT \
( \
BOOST_PP_DETAIL_IBP_IS_VARIADIC_R_, \
BOOST_PP_DETAIL_IBP_IS_VARIADIC_C __VA_ARGS__ \
) \
) \
/**/
#endif /* BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400 */
#endif /* BOOST_PP_VARIADICS */
#endif /* BOOST_PREPROCESSOR_IS_BEGIN_PARENS_HPP */