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ilink-world/ios/Pods/boost-for-react-native/boost/parameter/preprocessor.hpp

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migrating operation on est branch
2021-10-26 18:19:13 +00:00
// Copyright Daniel Wallin 2006. Use, modification and distribution is
// subject to 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)
#ifndef BOOST_PARAMETER_PREPROCESSOR_060206_HPP
# define BOOST_PARAMETER_PREPROCESSOR_060206_HPP
# include <boost/parameter/parameters.hpp>
# include <boost/parameter/binding.hpp>
# include <boost/parameter/match.hpp>
# include <boost/parameter/aux_/parenthesized_type.hpp>
# include <boost/parameter/aux_/cast.hpp>
# include <boost/parameter/aux_/preprocessor/flatten.hpp>
# include <boost/preprocessor/repetition/repeat_from_to.hpp>
# include <boost/preprocessor/comparison/equal.hpp>
# include <boost/preprocessor/control/if.hpp>
# include <boost/preprocessor/control/iif.hpp>
# include <boost/preprocessor/control/expr_if.hpp>
# include <boost/preprocessor/repetition/enum_params.hpp>
# include <boost/preprocessor/repetition/enum_binary_params.hpp>
# include <boost/preprocessor/repetition/enum_trailing.hpp>
# include <boost/preprocessor/seq/first_n.hpp>
# include <boost/preprocessor/seq/for_each_product.hpp>
# include <boost/preprocessor/seq/for_each_i.hpp>
# include <boost/preprocessor/tuple/elem.hpp>
# include <boost/preprocessor/tuple/eat.hpp>
# include <boost/preprocessor/seq/fold_left.hpp>
# include <boost/preprocessor/seq/push_back.hpp>
# include <boost/preprocessor/seq/size.hpp>
# include <boost/preprocessor/seq/enum.hpp>
# include <boost/preprocessor/seq/push_back.hpp>
# include <boost/preprocessor/detail/is_nullary.hpp>
# include <boost/mpl/always.hpp>
# include <boost/mpl/apply_wrap.hpp>
namespace boost { namespace parameter { namespace aux {
# if ! defined(BOOST_NO_SFINAE) && ! BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x592))
// Given Match, which is "void x" where x is an argument matching
// criterion, extract a corresponding MPL predicate.
template <class Match>
struct unwrap_predicate;
// Match anything
template <>
struct unwrap_predicate<void*>
{
typedef mpl::always<mpl::true_> type;
};
#if BOOST_WORKAROUND(__SUNPRO_CC, BOOST_TESTED_AT(0x580))
typedef void* voidstar;
// A matching predicate is explicitly specified
template <class Predicate>
struct unwrap_predicate<voidstar (Predicate)>
{
typedef Predicate type;
};
#else
// A matching predicate is explicitly specified
template <class Predicate>
struct unwrap_predicate<void *(Predicate)>
{
typedef Predicate type;
};
#endif
// A type to which the argument is supposed to be convertible is
// specified
template <class Target>
struct unwrap_predicate<void (Target)>
{
typedef is_convertible<mpl::_, Target> type;
};
// Recast the ParameterSpec's nested match metafunction as a free metafunction
template <
class Parameters
, BOOST_PP_ENUM_BINARY_PARAMS(
BOOST_PARAMETER_MAX_ARITY, class A, = boost::parameter::void_ BOOST_PP_INTERCEPT
)
>
struct match
: Parameters::template match<
BOOST_PP_ENUM_PARAMS(BOOST_PARAMETER_MAX_ARITY, A)
>
{};
# endif
# undef false_
template <
class Parameters
, BOOST_PP_ENUM_BINARY_PARAMS(
BOOST_PARAMETER_MAX_ARITY, class A, = boost::parameter::void_ BOOST_PP_INTERCEPT
)
>
struct argument_pack
{
typedef typename make_arg_list<
typename BOOST_PARAMETER_build_arg_list(
BOOST_PARAMETER_MAX_ARITY, make_items, typename Parameters::parameter_spec, A
)::type
, typename Parameters::deduced_list
, tag_keyword_arg
, mpl::false_
>::type result;
typedef typename mpl::first<result>::type type;
};
// Works around VC6 problem where it won't accept rvalues.
template <class T>
T& as_lvalue(T& value, long)
{
return value;
}
template <class T>
T const& as_lvalue(T const& value, int)
{
return value;
}
# if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
template <class Predicate, class T, class Args>
struct apply_predicate
{
BOOST_MPL_ASSERT((
mpl::and_<mpl::false_,T>
));
typedef typename mpl::if_<
typename mpl::apply2<Predicate,T,Args>::type
, char
, int
>::type type;
};
template <class P>
struct funptr_predicate
{
static P p;
template <class T, class Args, class P0>
static typename apply_predicate<P0,T,Args>::type
check_predicate(type<T>, Args*, void**(*)(P0));
template <class T, class Args, class P0>
static typename mpl::if_<
is_convertible<T,P0>
, char
, int
>::type check_predicate(type<T>, Args*, void*(*)(P0));
template <class T, class Args>
struct apply
{
BOOST_STATIC_CONSTANT(bool, result =
sizeof(check_predicate(boost::type<T>(), (Args*)0, &p)) == 1
);
typedef mpl::bool_<apply<T,Args>::result> type;
};
};
template <>
struct funptr_predicate<void**>
: mpl::always<mpl::true_>
{};
# endif
}}} // namespace boost::parameter::aux
# if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
// From Paul Mensonides
# define BOOST_PARAMETER_IS_NULLARY(x) \
BOOST_PP_SPLIT(1, BOOST_PARAMETER_IS_NULLARY_C x BOOST_PP_COMMA() 0) \
/**/
# define BOOST_PARAMETER_IS_NULLARY_C() \
~, 1 BOOST_PP_RPAREN() \
BOOST_PP_TUPLE_EAT(2) BOOST_PP_LPAREN() ~ \
/**/
# else
# define BOOST_PARAMETER_IS_NULLARY(x) BOOST_PP_IS_NULLARY(x)
# endif
# define BOOST_PARAMETER_MEMBER_FUNCTION_CHECK_STATIC_static ()
# define BOOST_PARAMETER_MEMBER_FUNCTION_IS_STATIC(name) \
BOOST_PARAMETER_IS_NULLARY( \
BOOST_PP_CAT(BOOST_PARAMETER_MEMBER_FUNCTION_CHECK_STATIC_,name) \
)
# if !defined(BOOST_MSVC)
# define BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC_static
# define BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC(name) \
BOOST_PP_CAT(BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC_, name)
# else
// Workaround for MSVC preprocessor.
//
// When stripping static from "static f", msvc will produce
// " f". The leading whitespace doesn't go away when pasting
// the token with something else, so this thing is a hack to
// strip the whitespace.
# define BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC_static (
# define BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC_AUX(name) \
BOOST_PP_CAT(BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC_, name))
# define BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC(name) \
BOOST_PP_SEQ_HEAD( \
BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC_AUX(name) \
)
# endif
# define BOOST_PARAMETER_MEMBER_FUNCTION_STATIC(name) \
BOOST_PP_EXPR_IF( \
BOOST_PARAMETER_MEMBER_FUNCTION_IS_STATIC(name) \
, static \
)
# define BOOST_PARAMETER_MEMBER_FUNCTION_NAME(name) \
BOOST_PP_IF( \
BOOST_PARAMETER_MEMBER_FUNCTION_IS_STATIC(name) \
, BOOST_PARAMETER_MEMBER_FUNCTION_STRIP_STATIC \
, name BOOST_PP_TUPLE_EAT(1) \
)(name)
// Calculates [begin, end) arity range.
# define BOOST_PARAMETER_ARITY_RANGE_M_optional(state) state
# define BOOST_PARAMETER_ARITY_RANGE_M_deduced_optional(state) state
# define BOOST_PARAMETER_ARITY_RANGE_M_required(state) BOOST_PP_INC(state)
# define BOOST_PARAMETER_ARITY_RANGE_M_deduced_required(state) BOOST_PP_INC(state)
# define BOOST_PARAMETER_ARITY_RANGE_M(s, state, x) \
BOOST_PP_CAT( \
BOOST_PARAMETER_ARITY_RANGE_M_ \
, BOOST_PARAMETER_FN_ARG_QUALIFIER(x) \
)(state)
/**/
# define BOOST_PARAMETER_ARITY_RANGE(args) \
( \
BOOST_PP_SEQ_FOLD_LEFT(BOOST_PARAMETER_ARITY_RANGE_M, 0, args) \
, BOOST_PP_INC(BOOST_PP_SEQ_SIZE(args)) \
)
/**/
// Accessor macros for the argument specs tuple.
# define BOOST_PARAMETER_FN_ARG_QUALIFIER(x) \
BOOST_PP_TUPLE_ELEM(4,0,x)
/**/
# define BOOST_PARAMETER_FN_ARG_NAME(x) \
BOOST_PP_TUPLE_ELEM(4,1,x)
/**/
# define BOOST_PARAMETER_FN_ARG_PRED(x) \
BOOST_PP_TUPLE_ELEM(4,2,x)
/**/
# define BOOST_PARAMETER_FN_ARG_DEFAULT(x) \
BOOST_PP_TUPLE_ELEM(4,3,x)
/**/
# define BOOST_PARAMETETER_FUNCTION_EAT_KEYWORD_QUALIFIER_out(x)
# define BOOST_PARAMETETER_FUNCTION_EAT_KEYWORD_QUALIFIER_in_out(x)
// Returns 1 if x is either "out(k)" or "in_out(k)".
# define BOOST_PARAMETER_FUNCTION_IS_KEYWORD_QUALIFIER(x) \
BOOST_PP_IS_EMPTY( \
BOOST_PP_CAT(BOOST_PARAMETETER_FUNCTION_EAT_KEYWORD_QUALIFIER_, x) \
) \
/**/
# define BOOST_PARAMETETER_FUNCTION_GET_KEYWORD_QUALIFIER_out(x) x
# define BOOST_PARAMETETER_FUNCTION_GET_KEYWORD_QUALIFIER_in_out(x) x
# define BOOST_PARAMETER_FUNCTION_KEYWORD_GET(x) \
BOOST_PP_CAT(BOOST_PARAMETETER_FUNCTION_GET_KEYWORD_QUALIFIER_, x)
/**/
// Returns the keyword of x, where x is either a keyword qualifier
// or a keyword.
//
// k => k
// out(k) => k
// in_out(k) => k
//
# define BOOST_PARAMETER_FUNCTION_KEYWORD(x) \
BOOST_PP_IF( \
BOOST_PARAMETER_FUNCTION_IS_KEYWORD_QUALIFIER(x) \
, BOOST_PARAMETER_FUNCTION_KEYWORD_GET \
, x BOOST_PP_TUPLE_EAT(1) \
)(x)
/**/
# define BOOST_PARAMETER_FN_ARG_KEYWORD(x) \
BOOST_PARAMETER_FUNCTION_KEYWORD( \
BOOST_PARAMETER_FN_ARG_NAME(x) \
)
// Builds forwarding functions.
# define BOOST_PARAMETER_FUNCTION_FWD_FUNCTION_TEMPLATE_Z(z, n) \
template<BOOST_PP_ENUM_PARAMS_Z(z, n, class ParameterArgumentType)>
/**/
# if ! defined(BOOST_NO_SFINAE) && ! BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x592))
# define BOOST_PARAMETER_FUNCTION_FWD_MATCH_Z(z, name, parameters, n) \
, typename boost::parameter::aux::match< \
parameters, BOOST_PP_ENUM_PARAMS(n, ParameterArgumentType) \
>::type = parameters()
# else
# define BOOST_PARAMETER_FUNCTION_FWD_MATCH_Z(z, name, parameters, n)
# endif
/**/
# define BOOST_PARAMETER_FUNCTION_PARAMETERS_NAME(base) \
BOOST_PP_CAT( \
boost_param_parameters_ \
, BOOST_PP_CAT(__LINE__, BOOST_PARAMETER_MEMBER_FUNCTION_NAME(base)) \
)
// Produce a name for a result type metafunction for the function
// named base
# define BOOST_PARAMETER_FUNCTION_RESULT_NAME(base) \
BOOST_PP_CAT( \
boost_param_result_ \
, BOOST_PP_CAT(__LINE__,BOOST_PARAMETER_MEMBER_FUNCTION_NAME(base)) \
)
// Can't do boost_param_impl_ ## basee because base might start with an underscore
// daniel: what? how is that relevant? the reason for using CAT() is to make sure
// base is expanded. i'm not sure we need to here, but it's more stable to do it.
# define BOOST_PARAMETER_IMPL(base) \
BOOST_PP_CAT(boost_param_impl,BOOST_PARAMETER_MEMBER_FUNCTION_NAME(base))
# define BOOST_PARAMETER_FUNCTION_FWD_FUNCTION00(z, n, r, data, elem) \
BOOST_PP_IF( \
n \
, BOOST_PARAMETER_FUNCTION_FWD_FUNCTION_TEMPLATE_Z, BOOST_PP_TUPLE_EAT(2) \
)(z,n) \
BOOST_PARAMETER_MEMBER_FUNCTION_STATIC(BOOST_PP_TUPLE_ELEM(7,3,data)) \
inline \
BOOST_PP_EXPR_IF(n, typename) \
BOOST_PARAMETER_FUNCTION_RESULT_NAME(BOOST_PP_TUPLE_ELEM(7,3,data))< \
BOOST_PP_EXPR_IF(n, typename) \
boost::parameter::aux::argument_pack< \
BOOST_PARAMETER_FUNCTION_PARAMETERS_NAME(BOOST_PP_TUPLE_ELEM(7,3,data)) \
BOOST_PP_COMMA_IF(n) \
BOOST_PP_IF( \
n, BOOST_PP_SEQ_ENUM, BOOST_PP_TUPLE_EAT(1) \
)(elem) \
>::type \
>::type \
BOOST_PARAMETER_MEMBER_FUNCTION_NAME(BOOST_PP_TUPLE_ELEM(7,3,data))( \
BOOST_PP_IF( \
n \
, BOOST_PP_SEQ_FOR_EACH_I_R \
, BOOST_PP_TUPLE_EAT(4) \
)( \
r \
, BOOST_PARAMETER_FUNCTION_ARGUMENT \
, ~ \
, elem \
) \
BOOST_PP_IF(n, BOOST_PARAMETER_FUNCTION_FWD_MATCH_Z, BOOST_PP_TUPLE_EAT(4))( \
z \
, BOOST_PP_TUPLE_ELEM(7,3,data) \
, BOOST_PARAMETER_FUNCTION_PARAMETERS_NAME(BOOST_PP_TUPLE_ELEM(7,3,data)) \
, n \
) \
) BOOST_PP_EXPR_IF(BOOST_PP_TUPLE_ELEM(7,4,data), const) \
{ \
return BOOST_PARAMETER_IMPL(BOOST_PP_TUPLE_ELEM(7,3,data))( \
BOOST_PARAMETER_FUNCTION_PARAMETERS_NAME(BOOST_PP_TUPLE_ELEM(7,3,data))()( \
BOOST_PP_ENUM_PARAMS_Z(z, n, a) \
) \
); \
}
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_FUNCTION0(r, data, elem) \
BOOST_PARAMETER_FUNCTION_FWD_FUNCTION00( \
BOOST_PP_TUPLE_ELEM(7,0,data) \
, BOOST_PP_TUPLE_ELEM(7,1,data) \
, r \
, data \
, elem \
)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_FUNCTION_ARITY_0(z, n, data) \
BOOST_PARAMETER_FUNCTION_FWD_FUNCTION00( \
z, n, BOOST_PP_DEDUCE_R() \
, (z, n, BOOST_PP_TUPLE_REM(5) data) \
, ~ \
)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_FUNCTION_ARITY_N(z, n, data) \
BOOST_PP_SEQ_FOR_EACH( \
BOOST_PARAMETER_FUNCTION_FWD_FUNCTION0 \
, (z, n, BOOST_PP_TUPLE_REM(5) data) \
, BOOST_PP_SEQ_FOR_EACH_PRODUCT( \
BOOST_PARAMETER_FUNCTION_FWD_PRODUCT \
, BOOST_PP_SEQ_FIRST_N( \
n, BOOST_PP_TUPLE_ELEM(5,3,data) \
) \
) \
)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_FUNCTION(z, n, data) \
BOOST_PP_IF( \
n \
, BOOST_PARAMETER_FUNCTION_FWD_FUNCTION_ARITY_N \
, BOOST_PARAMETER_FUNCTION_FWD_FUNCTION_ARITY_0 \
)(z,n,data) \
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_FUNCTIONS0( \
result,name,args,const_,combinations,range \
) \
BOOST_PP_REPEAT_FROM_TO( \
BOOST_PP_TUPLE_ELEM(2,0,range), BOOST_PP_TUPLE_ELEM(2,1,range) \
, BOOST_PARAMETER_FUNCTION_FWD_FUNCTION \
, (result,name,const_,combinations,BOOST_PP_TUPLE_ELEM(2,1,range)) \
)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_FUNCTIONS(result,name,args, const_, combinations) \
BOOST_PARAMETER_FUNCTION_FWD_FUNCTIONS0( \
result, name, args, const_, combinations, BOOST_PARAMETER_ARITY_RANGE(args) \
)
/**/
// Builds boost::parameter::parameters<> specialization
# define BOOST_PARAMETER_FUNCTION_PARAMETERS_QUALIFIER_optional(tag) \
optional<tag
# define BOOST_PARAMETER_FUNCTION_PARAMETERS_QUALIFIER_required(tag) \
required<tag
# define BOOST_PARAMETER_FUNCTION_PARAMETERS_QUALIFIER_deduced_optional(tag) \
optional<boost::parameter::deduced<tag>
# define BOOST_PARAMETER_FUNCTION_PARAMETERS_QUALIFIER_deduced_required(tag) \
required<boost::parameter::deduced<tag>
# if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
# define BOOST_PARAMETER_FUNCTION_PARAMETERS_M(r,tag_namespace,i,elem) \
BOOST_PP_COMMA_IF(i) \
boost::parameter::BOOST_PP_CAT( \
BOOST_PARAMETER_FUNCTION_PARAMETERS_QUALIFIER_ \
, BOOST_PARAMETER_FN_ARG_QUALIFIER(elem) \
)( \
tag_namespace::BOOST_PARAMETER_FUNCTION_KEYWORD( \
BOOST_PARAMETER_FN_ARG_KEYWORD(elem) \
) \
) \
, typename boost::parameter::aux::unwrap_predicate< \
void BOOST_PARAMETER_FN_ARG_PRED(elem) \
>::type \
>
# elif BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
# define BOOST_PARAMETER_FUNCTION_PARAMETERS_M(r,tag_namespace,i,elem) \
BOOST_PP_COMMA_IF(i) \
boost::parameter::BOOST_PP_CAT( \
BOOST_PARAMETER_FUNCTION_PARAMETERS_QUALIFIER_ \
, BOOST_PARAMETER_FN_ARG_QUALIFIER(elem) \
)( \
tag_namespace::BOOST_PARAMETER_FUNCTION_KEYWORD( \
BOOST_PARAMETER_FN_ARG_KEYWORD(elem) \
) \
) \
, boost::mpl::always<boost::mpl::true_> \
>
# endif
# define BOOST_PARAMETER_FUNCTION_PARAMETERS(tag_namespace, base, args) \
template <class BoostParameterDummy> \
struct BOOST_PP_CAT( \
BOOST_PP_CAT(boost_param_params_, __LINE__) \
, BOOST_PARAMETER_MEMBER_FUNCTION_NAME(base) \
) : boost::parameter::parameters< \
BOOST_PP_SEQ_FOR_EACH_I( \
BOOST_PARAMETER_FUNCTION_PARAMETERS_M, tag_namespace, args \
) \
> \
{}; \
\
typedef BOOST_PP_CAT( \
BOOST_PP_CAT(boost_param_params_, __LINE__) \
, BOOST_PARAMETER_MEMBER_FUNCTION_NAME(base) \
)<int>
// Defines result type metafunction
# define BOOST_PARAMETER_FUNCTION_RESULT_ARG(z, _, i, x) \
BOOST_PP_COMMA_IF(i) class BOOST_PP_TUPLE_ELEM(3,1,x)
/**/
# define BOOST_PARAMETER_FUNCTION_RESULT_(result, name, args) \
template <class Args> \
struct BOOST_PARAMETER_FUNCTION_RESULT_NAME(name) \
{ \
typedef typename BOOST_PARAMETER_PARENTHESIZED_TYPE(result) type; \
};
// Defines implementation function
# define BOOST_PARAMETER_FUNCTION_IMPL_HEAD(name) \
template <class Args> \
typename BOOST_PARAMETER_FUNCTION_RESULT_NAME(name)< \
Args \
>::type BOOST_PARAMETER_IMPL(name)(Args const& args)
# define BOOST_PARAMETER_FUNCTION_IMPL_FWD(name) \
BOOST_PARAMETER_FUNCTION_IMPL_HEAD(name);
/**/
# define BOOST_PARAMETER_FUNCTION_SPLIT_ARG_required(state, arg) \
( \
BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(4, 0, state)) \
, BOOST_PP_SEQ_PUSH_BACK(BOOST_PP_TUPLE_ELEM(4, 1, state), arg) \
, BOOST_PP_TUPLE_ELEM(4, 2, state) \
, BOOST_PP_TUPLE_ELEM(4, 3, state) \
)
# define BOOST_PARAMETER_FUNCTION_SPLIT_ARG_deduced_required(state, arg) \
BOOST_PARAMETER_FUNCTION_SPLIT_ARG_required(state, arg)
# define BOOST_PARAMETER_FUNCTION_SPLIT_ARG_optional(state, arg) \
( \
BOOST_PP_TUPLE_ELEM(4, 0, state) \
, BOOST_PP_TUPLE_ELEM(4, 1, state) \
, BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(4, 2, state)) \
, BOOST_PP_SEQ_PUSH_BACK(BOOST_PP_TUPLE_ELEM(4, 3, state), arg) \
)
# define BOOST_PARAMETER_FUNCTION_SPLIT_ARG_deduced_optional(state, arg) \
BOOST_PARAMETER_FUNCTION_SPLIT_ARG_optional(state, arg)
# define BOOST_PARAMETER_FUNCTION_SPLIT_ARG(s, state, arg) \
BOOST_PP_CAT( \
BOOST_PARAMETER_FUNCTION_SPLIT_ARG_ \
, BOOST_PARAMETER_FN_ARG_QUALIFIER(arg) \
)(state, arg)
// Returns (required_count, required, optional_count, optionals) tuple
# define BOOST_PARAMETER_FUNCTION_SPLIT_ARGS(args) \
BOOST_PP_SEQ_FOLD_LEFT( \
BOOST_PARAMETER_FUNCTION_SPLIT_ARG \
, (0,BOOST_PP_SEQ_NIL, 0,BOOST_PP_SEQ_NIL) \
, args \
)
# define BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_ARG_NAME(keyword) \
BOOST_PP_CAT(BOOST_PP_CAT(keyword,_),type)
// Helpers used as parameters to BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS.
# define BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_TEMPLATE_ARG(r, _, arg) \
, class BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_ARG_NAME( \
BOOST_PARAMETER_FN_ARG_KEYWORD(arg) \
)
# define BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_ARG(r, _, arg) \
, BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_ARG_NAME( \
BOOST_PARAMETER_FN_ARG_KEYWORD(arg) \
)& BOOST_PARAMETER_FN_ARG_KEYWORD(arg)
# define BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_PARAMETER(r, _, arg) \
, BOOST_PARAMETER_FN_ARG_KEYWORD(arg)
// Produces a name for the dispatch functions.
# define BOOST_PARAMETER_FUNCTION_DEFAULT_NAME(name) \
BOOST_PP_CAT( \
boost_param_default_ \
, BOOST_PP_CAT(__LINE__, BOOST_PARAMETER_MEMBER_FUNCTION_NAME(name)) \
)
// Helper macro used below to produce lists based on the keyword argument
// names. macro is applied to every element. n is the number of
// optional arguments that should be included.
# define BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS(macro, n, split_args) \
BOOST_PP_SEQ_FOR_EACH( \
macro \
, ~ \
, BOOST_PP_TUPLE_ELEM(4,1,split_args) \
) \
BOOST_PP_SEQ_FOR_EACH( \
macro \
, ~ \
, BOOST_PP_SEQ_FIRST_N( \
BOOST_PP_SUB(BOOST_PP_TUPLE_ELEM(4,2,split_args), n) \
, BOOST_PP_TUPLE_ELEM(4,3,split_args) \
) \
)
// Generates a keyword | default expression.
# define BOOST_PARAMETER_FUNCTION_DEFAULT_EVAL_DEFAULT(arg, tag_namespace) \
boost::parameter::keyword< \
tag_namespace::BOOST_PARAMETER_FN_ARG_KEYWORD(arg) \
>::instance | boost::parameter::aux::use_default_tag()
# define BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_GET_ARG(arg, tag_ns) \
BOOST_PARAMETER_FUNCTION_CAST( \
args[ \
BOOST_PARAMETER_FUNCTION_DEFAULT_EVAL_DEFAULT( \
arg, tag_ns \
) \
] \
, BOOST_PARAMETER_FN_ARG_PRED(arg) \
, Args \
)
# define BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_BODY(name, n, split_args, tag_namespace) \
{ \
return BOOST_PARAMETER_FUNCTION_DEFAULT_NAME(name)( \
(ResultType(*)())0 \
, args \
, 0L \
BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS( \
BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_PARAMETER \
, n \
, split_args \
) \
, BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_GET_ARG( \
BOOST_PP_SEQ_ELEM( \
BOOST_PP_SUB(BOOST_PP_TUPLE_ELEM(4,2,split_args), n) \
, BOOST_PP_TUPLE_ELEM(4,3,split_args) \
) \
, tag_namespace \
) \
); \
}
# define BOOST_PARAMETER_FUNCTION_DEFAULT_EVAL_ACTUAL_DEFAULT(arg) \
BOOST_PARAMETER_FUNCTION_CAST( \
boost::parameter::aux::as_lvalue(BOOST_PARAMETER_FN_ARG_DEFAULT(arg), 0L) \
, BOOST_PARAMETER_FN_ARG_PRED(arg) \
, Args \
)
# define BOOST_PARAMETER_FUNCTION_DEFAULT_EVAL_DEFAULT_BODY(name, n, split_args, tag_ns, const_) \
template < \
class ResultType \
, class Args \
BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS( \
BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_TEMPLATE_ARG \
, BOOST_PP_INC(n) \
, split_args \
) \
> \
BOOST_PARAMETER_MEMBER_FUNCTION_STATIC(name) \
ResultType BOOST_PARAMETER_FUNCTION_DEFAULT_NAME(name)( \
ResultType(*)() \
, Args const& args \
, long \
BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS( \
BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_ARG \
, BOOST_PP_INC(n) \
, split_args \
) \
, boost::parameter::aux::use_default_tag \
) BOOST_PP_EXPR_IF(const_, const) \
{ \
return BOOST_PARAMETER_FUNCTION_DEFAULT_NAME(name)( \
(ResultType(*)())0 \
, args \
, 0L \
BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS( \
BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_PARAMETER \
, BOOST_PP_INC(n) \
, split_args \
) \
, BOOST_PARAMETER_FUNCTION_DEFAULT_EVAL_ACTUAL_DEFAULT( \
BOOST_PP_SEQ_ELEM( \
BOOST_PP_SUB(BOOST_PP_TUPLE_ELEM(4,2,split_args), BOOST_PP_INC(n)) \
, BOOST_PP_TUPLE_ELEM(4,3,split_args) \
) \
) \
); \
}
// Produces a forwarding layer in the default evaluation machine.
//
// data is a tuple:
//
// (name, split_args)
//
// Where name is the base name of the function, and split_args is a tuple:
//
// (required_count, required_args, optional_count, required_args)
//
// defines the actual function body for BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION below.
# define BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION0(z, n, data) \
template < \
class ResultType \
, class Args \
BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS( \
BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_TEMPLATE_ARG \
, n \
, BOOST_PP_TUPLE_ELEM(5,1,data) \
) \
> \
BOOST_PARAMETER_MEMBER_FUNCTION_STATIC(BOOST_PP_TUPLE_ELEM(5,0,data)) \
ResultType BOOST_PARAMETER_FUNCTION_DEFAULT_NAME(BOOST_PP_TUPLE_ELEM(5,0,data))( \
ResultType(*)() \
, Args const& args \
, int \
BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS( \
BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_ARG \
, n \
, BOOST_PP_TUPLE_ELEM(5,1,data) \
) \
) BOOST_PP_EXPR_IF(BOOST_PP_TUPLE_ELEM(5,2,data), const) \
BOOST_PP_IF( \
n \
, BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_BODY \
, ; BOOST_PP_TUPLE_EAT(4) \
)( \
BOOST_PP_TUPLE_ELEM(5,0,data) \
, n \
, BOOST_PP_TUPLE_ELEM(5,1,data) \
, BOOST_PP_TUPLE_ELEM(5,3,data) \
)
# define BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION(z, n, data) \
BOOST_PP_IF( \
BOOST_PP_AND( \
BOOST_PP_NOT(n) \
, BOOST_PP_TUPLE_ELEM(5,4,data) \
) \
, BOOST_PP_TUPLE_EAT(3) \
, BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION0 \
)(z, n, data) \
BOOST_PP_IF( \
BOOST_PP_EQUAL(n, BOOST_PP_TUPLE_ELEM(4,2,BOOST_PP_TUPLE_ELEM(5,1,data))) \
, BOOST_PP_TUPLE_EAT(5) \
, BOOST_PARAMETER_FUNCTION_DEFAULT_EVAL_DEFAULT_BODY \
)( \
BOOST_PP_TUPLE_ELEM(5,0,data) \
, n \
, BOOST_PP_TUPLE_ELEM(5,1,data) \
, BOOST_PP_TUPLE_ELEM(5,3,data) \
, BOOST_PP_TUPLE_ELEM(5,2,data) \
)
# define BOOST_PARAMETER_FUNCTION_DEFAULT_GET_ARG(r, tag_ns, arg) \
, BOOST_PARAMETER_FUNCTION_CAST( \
args[ \
boost::parameter::keyword<tag_ns::BOOST_PARAMETER_FN_ARG_KEYWORD(arg)>::instance \
] \
, BOOST_PARAMETER_FN_ARG_PRED(arg) \
, Args \
)
// Generates the function template that recives a ArgumentPack, and then
// goes on to call the layers of overloads generated by
// BOOST_PARAMETER_FUNCTION_DEFAULT_LAYER.
# define BOOST_PARAMETER_FUNCTION_INITIAL_DISPATCH_FUNCTION(name, split_args, const_, tag_ns) \
template <class Args> \
typename BOOST_PARAMETER_FUNCTION_RESULT_NAME(name)<Args>::type \
BOOST_PARAMETER_MEMBER_FUNCTION_STATIC(name) \
BOOST_PARAMETER_IMPL(name)(Args const& args) BOOST_PP_EXPR_IF(const_, const) \
{ \
return BOOST_PARAMETER_FUNCTION_DEFAULT_NAME(name)( \
(typename BOOST_PARAMETER_FUNCTION_RESULT_NAME(name)<Args>::type(*)())0 \
, args \
, 0L \
\
BOOST_PP_SEQ_FOR_EACH( \
BOOST_PARAMETER_FUNCTION_DEFAULT_GET_ARG \
, tag_ns \
, BOOST_PP_TUPLE_ELEM(4,1,split_args) \
) \
\
); \
}
// Helper for BOOST_PARAMETER_FUNCTION_DEFAULT_LAYER below.
# define BOOST_PARAMETER_FUNCTION_DEFAULT_LAYER_AUX( \
name, split_args, skip_fwd_decl, const_, tag_namespace \
) \
BOOST_PP_REPEAT_FROM_TO( \
0 \
, BOOST_PP_INC(BOOST_PP_TUPLE_ELEM(4, 2, split_args)) \
, BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION \
, (name, split_args, const_, tag_namespace, skip_fwd_decl) \
) \
\
BOOST_PARAMETER_FUNCTION_INITIAL_DISPATCH_FUNCTION(name, split_args, const_, tag_namespace) \
\
template < \
class ResultType \
, class Args \
BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS( \
BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_TEMPLATE_ARG \
, 0 \
, split_args \
) \
> \
BOOST_PARAMETER_MEMBER_FUNCTION_STATIC(name) \
ResultType BOOST_PARAMETER_FUNCTION_DEFAULT_NAME(name)( \
ResultType(*)() \
, Args const& \
, int \
BOOST_PARAMETER_FUNCTION_DEFAULT_ARGUMENTS( \
BOOST_PARAMETER_FUNCTION_DEFAULT_FUNCTION_ARG \
, 0 \
, split_args \
) \
) BOOST_PP_EXPR_IF(const_, const)
// Generates a bunch of forwarding functions that each extract
// one more argument.
# define BOOST_PARAMETER_FUNCTION_DEFAULT_LAYER(name, args, skip_fwd_decl, const_, tag_ns) \
BOOST_PARAMETER_FUNCTION_DEFAULT_LAYER_AUX( \
name, BOOST_PARAMETER_FUNCTION_SPLIT_ARGS(args), skip_fwd_decl, const_, tag_ns \
)
/**/
// Defines the result metafunction and the parameters specialization.
# define BOOST_PARAMETER_FUNCTION_HEAD(result, name, tag_namespace, args) \
BOOST_PARAMETER_FUNCTION_RESULT_(result, name, args) \
\
BOOST_PARAMETER_FUNCTION_PARAMETERS(tag_namespace, name, args) \
BOOST_PARAMETER_FUNCTION_PARAMETERS_NAME(name); \
// Helper for BOOST_PARAMETER_FUNCTION below.
# define BOOST_PARAMETER_FUNCTION_AUX(result, name, tag_namespace, args) \
BOOST_PARAMETER_FUNCTION_HEAD(result, name, tag_namespace, args) \
BOOST_PARAMETER_FUNCTION_IMPL_HEAD(name); \
\
BOOST_PARAMETER_FUNCTION_FWD_FUNCTIONS( \
result, name, args, 0 \
, BOOST_PARAMETER_FUNCTION_FWD_COMBINATIONS(args) \
) \
\
BOOST_PARAMETER_FUNCTION_DEFAULT_LAYER(name, args, 0, 0, tag_namespace)
// Defines a Boost.Parameter enabled function with the new syntax.
# define BOOST_PARAMETER_FUNCTION(result, name, tag_namespace, args) \
BOOST_PARAMETER_FUNCTION_AUX( \
result, name, tag_namespace \
, BOOST_PARAMETER_FLATTEN(3, 2, 3, args) \
) \
/**/
// Defines a Boost.Parameter enabled function.
# define BOOST_PARAMETER_BASIC_FUNCTION_AUX(result, name, tag_namespace, args) \
BOOST_PARAMETER_FUNCTION_HEAD(result, name, tag_namespace, args) \
\
BOOST_PARAMETER_FUNCTION_IMPL_FWD(name) \
\
BOOST_PARAMETER_FUNCTION_FWD_FUNCTIONS( \
result, name, args, 0 \
, BOOST_PARAMETER_FUNCTION_FWD_COMBINATIONS(args) \
) \
\
BOOST_PARAMETER_FUNCTION_IMPL_HEAD(name)
# define BOOST_PARAMETER_BASIC_FUNCTION(result, name, tag_namespace, args) \
BOOST_PARAMETER_BASIC_FUNCTION_AUX( \
result, name, tag_namespace \
, BOOST_PARAMETER_FLATTEN(2, 2, 3, args) \
) \
/**/
// Defines a Boost.Parameter enabled member function.
# define BOOST_PARAMETER_BASIC_MEMBER_FUNCTION_AUX(result, name, tag_namespace, args, const_) \
BOOST_PARAMETER_FUNCTION_HEAD(result, name, tag_namespace, args) \
\
BOOST_PARAMETER_FUNCTION_FWD_FUNCTIONS( \
result, name, args, const_ \
, BOOST_PARAMETER_FUNCTION_FWD_COMBINATIONS(args) \
) \
\
BOOST_PARAMETER_FUNCTION_IMPL_HEAD(name) BOOST_PP_EXPR_IF(const_, const) \
/**/
# define BOOST_PARAMETER_BASIC_MEMBER_FUNCTION(result, name, tag_namespace, args) \
BOOST_PARAMETER_BASIC_MEMBER_FUNCTION_AUX( \
result, name, tag_namespace \
, BOOST_PARAMETER_FLATTEN(2, 2, 3, args) \
, 0 \
)
/**/
# define BOOST_PARAMETER_BASIC_CONST_MEMBER_FUNCTION(result, name, tag_namespace, args) \
BOOST_PARAMETER_BASIC_MEMBER_FUNCTION_AUX( \
result, name, tag_namespace \
, BOOST_PARAMETER_FLATTEN(2, 2, 3, args) \
, 1 \
)
/**/
# define BOOST_PARAMETER_MEMBER_FUNCTION_AUX(result, name, tag_namespace, const_, args) \
BOOST_PARAMETER_FUNCTION_HEAD(result, name, tag_namespace, args) \
\
BOOST_PARAMETER_FUNCTION_FWD_FUNCTIONS( \
result, name, args, const_ \
, BOOST_PARAMETER_FUNCTION_FWD_COMBINATIONS(args) \
) \
\
BOOST_PARAMETER_FUNCTION_DEFAULT_LAYER(name, args, 1, const_, tag_namespace)
// Defines a Boost.Parameter enabled function with the new syntax.
# define BOOST_PARAMETER_MEMBER_FUNCTION(result, name, tag_namespace, args) \
BOOST_PARAMETER_MEMBER_FUNCTION_AUX( \
result, name, tag_namespace, 0 \
, BOOST_PARAMETER_FLATTEN(3, 2, 3, args) \
) \
/**/
# define BOOST_PARAMETER_CONST_MEMBER_FUNCTION(result, name, tag_namespace, args) \
BOOST_PARAMETER_MEMBER_FUNCTION_AUX( \
result, name, tag_namespace, 1 \
, BOOST_PARAMETER_FLATTEN(3, 2, 3, args) \
) \
/**/
// Defines a Boost.Parameter enabled constructor.
# define BOOST_PARAMETER_FUNCTION_ARGUMENT(r, _, i, elem) \
BOOST_PP_COMMA_IF(i) elem& BOOST_PP_CAT(a, i)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR00(z, n, r, data, elem) \
BOOST_PP_IF( \
n \
, BOOST_PARAMETER_FUNCTION_FWD_FUNCTION_TEMPLATE_Z, BOOST_PP_TUPLE_EAT(2) \
)(z, n) \
BOOST_PP_EXPR_IF(BOOST_PP_EQUAL(n,1), explicit) \
BOOST_PP_TUPLE_ELEM(6,2,data)( \
BOOST_PP_IF( \
n \
, BOOST_PP_SEQ_FOR_EACH_I_R \
, BOOST_PP_TUPLE_EAT(4) \
)( \
r \
, BOOST_PARAMETER_FUNCTION_ARGUMENT \
, ~ \
, elem \
) \
BOOST_PP_IF(n, BOOST_PARAMETER_FUNCTION_FWD_MATCH_Z, BOOST_PP_TUPLE_EAT(4))( \
z \
, BOOST_PP_TUPLE_ELEM(6,3,data) \
, BOOST_PP_CAT(constructor_parameters, __LINE__) \
, n \
) \
) \
: BOOST_PARAMETER_PARENTHESIZED_TYPE(BOOST_PP_TUPLE_ELEM(6,3,data)) ( \
BOOST_PP_CAT(constructor_parameters, __LINE__)()( \
BOOST_PP_ENUM_PARAMS_Z(z, n, a) \
) \
) \
{}
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR0(r, data, elem) \
BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR00( \
BOOST_PP_TUPLE_ELEM(6,0,data) \
, BOOST_PP_TUPLE_ELEM(6,1,data) \
, r \
, data \
, elem \
)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_PRODUCT(r, product) \
(product)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR_ARITY_0(z, n, data) \
BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR00( \
z, n, BOOST_PP_DEDUCE_R() \
, (z, n, BOOST_PP_TUPLE_REM(4) data) \
, ~ \
)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR_ARITY_N(z, n, data) \
BOOST_PP_SEQ_FOR_EACH( \
BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR0 \
, (z, n, BOOST_PP_TUPLE_REM(4) data) \
, BOOST_PP_SEQ_FOR_EACH_PRODUCT( \
BOOST_PARAMETER_FUNCTION_FWD_PRODUCT \
, BOOST_PP_SEQ_FIRST_N( \
n, BOOST_PP_TUPLE_ELEM(4,2,data) \
) \
) \
)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR(z, n, data) \
BOOST_PP_IF( \
n \
, BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR_ARITY_N \
, BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR_ARITY_0 \
)(z,n,data) \
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTORS0(class_,base,args,combinations,range) \
BOOST_PP_REPEAT_FROM_TO( \
BOOST_PP_TUPLE_ELEM(2,0,range), BOOST_PP_TUPLE_ELEM(2,1,range) \
, BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTOR \
, (class_,base,combinations,BOOST_PP_TUPLE_ELEM(2,1,range)) \
)
/**/
# define BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTORS(class_,base,args,combinations) \
BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTORS0( \
class_, base, args, combinations, BOOST_PARAMETER_ARITY_RANGE(args) \
)
/**/
# define BOOST_PARAMETER_CONSTRUCTOR_AUX(class_, base, tag_namespace, args) \
BOOST_PARAMETER_FUNCTION_PARAMETERS(tag_namespace, ctor, args) \
BOOST_PP_CAT(constructor_parameters, __LINE__); \
\
BOOST_PARAMETER_FUNCTION_FWD_CONSTRUCTORS( \
class_, base, args \
, BOOST_PARAMETER_FUNCTION_FWD_COMBINATIONS(args) \
) \
/**/
# define BOOST_PARAMETER_CONSTRUCTOR(class_, base, tag_namespace, args) \
BOOST_PARAMETER_CONSTRUCTOR_AUX( \
class_, base, tag_namespace \
, BOOST_PARAMETER_FLATTEN(2, 2, 3, args) \
)
/**/
# ifndef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
# define BOOST_PARAMETER_FUNCTION_FWD_COMBINATION(r, _, i, elem) \
(BOOST_PP_IF( \
BOOST_PARAMETER_FUNCTION_IS_KEYWORD_QUALIFIER( \
BOOST_PARAMETER_FN_ARG_NAME(elem) \
) \
, (const ParameterArgumentType ## i)(ParameterArgumentType ## i) \
, (const ParameterArgumentType ## i) \
))
// No partial ordering. This feature doesn't work.
# else
# define BOOST_PARAMETER_FUNCTION_FWD_COMBINATION(r, _, i, elem) \
(BOOST_PP_IF( \
BOOST_PARAMETER_FUNCTION_IS_KEYWORD_QUALIFIER( \
BOOST_PARAMETER_FN_ARG_NAME(elem) \
) \
, (ParameterArgumentType ## i) \
, (const ParameterArgumentType ## i) \
))
# endif
# define BOOST_PARAMETER_FUNCTION_FWD_COMBINATIONS(args) \
BOOST_PP_SEQ_FOR_EACH_I(BOOST_PARAMETER_FUNCTION_FWD_COMBINATION, ~, args)
#endif // BOOST_PARAMETER_PREPROCESSOR_060206_HPP