123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201 |
- // 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 BOOST_LOCAL_FUNCTION_AUX_NAME_HPP_
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_HPP_
- #include <boost/local_function/config.hpp>
- #include <boost/local_function/aux_/macro/decl.hpp>
- #include <boost/local_function/aux_/macro/code_/functor.hpp>
- #include <boost/local_function/detail/preprocessor/keyword/recursive.hpp>
- #include <boost/local_function/detail/preprocessor/keyword/inline.hpp>
- #include <boost/local_function/aux_/function.hpp>
- #include <boost/local_function/aux_/symbol.hpp>
- #include <boost/preprocessor/control/iif.hpp>
- #include <boost/preprocessor/control/expr_iif.hpp>
- #include <boost/preprocessor/logical/bitor.hpp>
- #include <boost/preprocessor/tuple/eat.hpp>
- // PRIVATE //
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_LOCAL_TYPE_(local_function_name) \
- BOOST_LOCAL_FUNCTION_AUX_SYMBOL( (local_type)(local_function_name) )
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_INIT_RECURSION_FUNC_ \
- BOOST_LOCAL_FUNCTION_AUX_SYMBOL( (init_recursion) )
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_RECURSIVE_FUNC_( \
- is_recursive, local_function_name) \
- BOOST_PP_IIF(is_recursive, \
- local_function_name \
- , \
- BOOST_LOCAL_FUNCTION_AUX_SYMBOL( (nonrecursive_local_function_name) ) \
- )
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_END_LOCAL_FUNCTOR_(typename01, \
- local_function_name, is_recursive, \
- local_functor_name, nonlocal_functor_name) \
- /* FUNCTION macro expanded to: typedef class functor ## __LINE__ { ... */ \
- BOOST_PP_EXPR_IIF(is_recursive, \
- /* member var with function name for recursive calls; it cannot be */ \
- /* `const` because it is init after construction (because */ \
- /* constructor doesn't know local function name) */ \
- /* run-time: even when optimizing, recursive calls cannot be */ \
- /* optimized (i.e., they must be via the non-local functor) */ \
- /* because this cannot be a mem ref because its name is not known */ \
- /* by the constructor so it cannot be set by the mem init list */ \
- private: \
- BOOST_LOCAL_FUNCTION_AUX_CODE_FUNCTOR_TYPE \
- BOOST_LOCAL_FUNCTION_AUX_NAME_RECURSIVE_FUNC_(is_recursive, \
- local_function_name); \
- /* run-time: the `init_recursion()` function cannot be called */ \
- /* by the constructor to allow for compiler optimization */ \
- /* (inlining) so it must be public to be called (see below) */ \
- public: \
- inline void BOOST_LOCAL_FUNCTION_AUX_NAME_INIT_RECURSION_FUNC_( \
- BOOST_LOCAL_FUNCTION_AUX_CODE_FUNCTOR_TYPE& functor) { \
- local_function_name = functor; \
- } \
- ) \
- } BOOST_LOCAL_FUNCTION_AUX_NAME_LOCAL_TYPE_(local_function_name); \
- /* local functor can be passed as tparam only on C++11 (faster) */ \
- BOOST_LOCAL_FUNCTION_AUX_NAME_LOCAL_TYPE_(local_function_name) \
- local_functor_name(BOOST_LOCAL_FUNCTION_AUX_DECL_ARGS_VAR.value); \
- /* non-local functor can always be passed as tparam (but slower) */ \
- BOOST_PP_EXPR_IIF(typename01, typename) \
- BOOST_LOCAL_FUNCTION_AUX_NAME_LOCAL_TYPE_(local_function_name):: \
- BOOST_LOCAL_FUNCTION_AUX_CODE_FUNCTOR_TYPE \
- nonlocal_functor_name; /* functor variable */ \
- /* the order of the following 2 function calls cannot be changed */ \
- /* because init_recursion uses the local_functor so the local_functor */ \
- /* must be init first */ \
- local_functor_name.BOOST_LOCAL_FUNCTION_AUX_FUNCTION_INIT_CALL_FUNC( \
- &local_functor_name, nonlocal_functor_name); \
- BOOST_PP_EXPR_IIF(is_recursive, \
- /* init recursion causes MSVC to not optimize local function not */ \
- /* even when local functor is used as template parameter so no */ \
- /* recursion unless all inlining optimizations are specified off */ \
- local_functor_name.BOOST_LOCAL_FUNCTION_AUX_NAME_INIT_RECURSION_FUNC_( \
- nonlocal_functor_name); \
- )
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_FUNCTOR_(local_function_name) \
- BOOST_LOCAL_FUNCTION_AUX_SYMBOL( (local_function_name) )
- // This can always be passed as a template parameters (on all compilers).
- // However, it is slower because it cannot be inlined.
- // Passed at tparam: Yes (on all C++). Inlineable: No. Recursive: No.
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_(typename01, local_function_name) \
- BOOST_LOCAL_FUNCTION_AUX_NAME_END_LOCAL_FUNCTOR_(typename01, \
- local_function_name, \
- /* local function is not recursive (because recursion and its */ \
- /* initialization cannot be inlined even on C++11, */ \
- /* so this allows optimization at least on C++11) */ \
- 0 /* not recursive */ , \
- /* local functor */ \
- BOOST_LOCAL_FUNCTION_AUX_NAME_FUNCTOR_(local_function_name), \
- /* local function declared as non-local functor -- but it can */ \
- /* be inlined only by C++11 and it cannot be recursive */ \
- local_function_name)
- // This is faster on some compilers but not all (e.g., it is faster on GCC
- // because its optimization inlines it but not on MSVC). However, it cannot be
- // passed as a template parameter on non C++11 compilers.
- // Passed at tparam: Only on C++11. Inlineable: Yes. Recursive: No.
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_INLINE_(typename01, local_function_name) \
- BOOST_LOCAL_FUNCTION_AUX_NAME_END_LOCAL_FUNCTOR_(typename01, \
- local_function_name, \
- /* inlined local function is never recursive (because recursion */ \
- /* and its initialization cannot be inlined)*/ \
- 0 /* not recursive */ , \
- /* inlined local function declared as local functor (maybe */ \
- /* inlined even by non C++11 -- but it can be passed as */ \
- /* template parameter only on C++11 */ \
- local_function_name, \
- /* non-local functor */ \
- BOOST_LOCAL_FUNCTION_AUX_NAME_FUNCTOR_(local_function_name))
- // This is slower on all compilers (C++11 and non) because recursion and its
- // initialization can never be inlined.
- // Passed at tparam: Yes. Inlineable: No. Recursive: Yes.
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_RECURSIVE_( \
- typename01, local_function_name) \
- BOOST_LOCAL_FUNCTION_AUX_NAME_END_LOCAL_FUNCTOR_(typename01, \
- local_function_name, \
- /* recursive local function -- but it cannot be inlined */ \
- 1 /* recursive */ , \
- /* local functor */ \
- BOOST_LOCAL_FUNCTION_AUX_NAME_FUNCTOR_(local_function_name), \
- /* local function declared as non-local functor -- but it can */ \
- /* be inlined only by C++11 */ \
- local_function_name)
- // Inlined local functions are specified by `..._NAME(inline name)`.
- // They have more chances to be inlined for faster run-times by some compilers
- // (for example by GCC but not by MSVC). C++11 compilers can always inline
- // local functions even if they are not explicitly specified inline.
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_PARSE_INLINE_( \
- typename01, qualified_name) \
- BOOST_PP_IIF(BOOST_PP_BITOR( \
- BOOST_LOCAL_FUNCTION_CONFIG_LOCALS_AS_TPARAMS, \
- BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_IS_INLINE_FRONT( \
- qualified_name)), \
- /* on C++11 always use inlining because compilers might optimize */ \
- /* it to be faster and it can also be passed as tparam */ \
- BOOST_LOCAL_FUNCTION_AUX_NAME_INLINE_ \
- , \
- /* on non C++11 don't use liniling unless explicitly specified by */ \
- /* programmers `inline name` the inlined local function cannot be */ \
- /* passed as tparam */ \
- BOOST_LOCAL_FUNCTION_AUX_NAME_ \
- )(typename01, BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_INLINE_REMOVE_FRONT( \
- qualified_name))
- // Expand to 1 iff `recursive name` or `recursive inline name` or
- // `inline recursive name`.
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_IS_RECURSIVE_(qualified_name) \
- BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_IS_RECURSIVE_FRONT( \
- BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_INLINE_REMOVE_FRONT( \
- qualified_name \
- ))
- // Revmoes `recursive`, `inline recursive`, and `recursive inline` from front.
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_REMOVE_RECURSIVE_AND_INLINE_( \
- qualified_name) \
- BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_RECURSIVE_REMOVE_FRONT( \
- BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_INLINE_REMOVE_FRONT( \
- BOOST_LOCAL_FUNCTION_DETAIL_PP_KEYWORD_RECURSIVE_REMOVE_FRONT( \
- qualified_name \
- )))
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_RECURSIVE_REMOVE_(qualified_name) \
- BOOST_PP_IIF(BOOST_LOCAL_FUNCTION_AUX_NAME_IS_RECURSIVE_(qualified_name), \
- BOOST_LOCAL_FUNCTION_AUX_NAME_REMOVE_RECURSIVE_AND_INLINE_ \
- , \
- qualified_name /* might be `name` or `inline name` */ \
- BOOST_PP_TUPLE_EAT(1) \
- )(qualified_name)
- // Recursive local function are specified by `..._NAME(recursive name)`.
- // They can never be inlined for faster run-time (not even by C++11 compilers).
- #define BOOST_LOCAL_FUNCTION_AUX_NAME_PARSE_RECURSIVE_( \
- typename01, qualified_name) \
- BOOST_PP_IIF(BOOST_LOCAL_FUNCTION_AUX_NAME_IS_RECURSIVE_(qualified_name), \
- /* recursion can never be inlined (not even on C++11) */ \
- BOOST_LOCAL_FUNCTION_AUX_NAME_RECURSIVE_ \
- , \
- BOOST_LOCAL_FUNCTION_AUX_NAME_PARSE_INLINE_ \
- )(typename01, \
- BOOST_LOCAL_FUNCTION_AUX_NAME_RECURSIVE_REMOVE_(qualified_name))
- // PUBLIC //
- #define BOOST_LOCAL_FUNCTION_AUX_NAME(typename01, qualified_name) \
- BOOST_LOCAL_FUNCTION_AUX_NAME_PARSE_RECURSIVE_(typename01, qualified_name)
- #endif // #include guard
|