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// Copyright (C) 2009-2012 Lorenzo Caminiti
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// Distributed under the Boost Software License, Version 1.0
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// (see accompanying file LICENSE_1_0.txt or a copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// Home at http://www.boost.org/libs/local_function
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#ifndef BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_VALIDATE_THIS_COUNT_HPP_
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#define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_VALIDATE_THIS_COUNT_HPP_
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#include <boost/local_function/aux_/preprocessor/traits/decl_/set_error.hpp>
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#include <boost/local_function/aux_/preprocessor/traits/decl_const_binds.hpp>
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#include <boost/local_function/aux_/preprocessor/traits/decl_binds.hpp>
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#include <boost/preprocessor/control/iif.hpp>
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#include <boost/preprocessor/facilities/empty.hpp>
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#include <boost/preprocessor/tuple/eat.hpp>
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#include <boost/preprocessor/comparison/greater.hpp>
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#include <boost/preprocessor/list/append.hpp>
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#include <boost/preprocessor/list/size.hpp>
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// PUBLIC //
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#define BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_VALIDATE_THIS_COUNT( \
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decl_traits) \
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BOOST_PP_IIF(BOOST_PP_GREATER(BOOST_PP_LIST_SIZE(BOOST_PP_LIST_APPEND( \
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BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_CONST_BIND_THIS_TYPES( \
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decl_traits), \
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BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_BIND_THIS_TYPES( \
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decl_traits))), \
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1), \
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BOOST_LOCAL_FUNCTION_AUX_PP_DECL_TRAITS_SET_ERROR \
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, /* do nothing (keeping previous error, if any) */ \
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decl_traits BOOST_PP_TUPLE_EAT(2) \
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)(decl_traits, /* trailing `EMPTY` because error might not be present */ \
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ERROR_cannot_bind_object_this_multiple_times BOOST_PP_EMPTY)
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#endif // #include guard
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