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Editing: foreach.hpp
// (C) Copyright Eric Niebler 2004-2005 // (C) Copyright Gennadiy Rozental 2001. // 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/libs/test for the library home page. // // File : $RCSfile$ // // Version : $Revision$ // // Description : this is an abridged version of an excelent BOOST_FOREACH facility // presented by Eric Niebler. I am so fond of it so I can't wait till it // going to be accepted into Boost. Also I need version with less number of dependencies // and more portable. This version doesn't support rvalues and will reeveluate it's // parameters, but should be good enough for my purposes. // *************************************************************************** #ifndef BOOST_TEST_UTILS_FOREACH_HPP #define BOOST_TEST_UTILS_FOREACH_HPP // Boost.Test #include <boost/test/detail/config.hpp> // Boost #include <boost/type.hpp> #include <boost/mpl/bool.hpp> #include <boost/type_traits/is_const.hpp> #include <boost/test/detail/suppress_warnings.hpp> //____________________________________________________________________________// namespace boost { namespace unit_test { namespace for_each { // ************************************************************************** // // ************** static_any ************** // // ************************************************************************** // struct static_any_base { operator bool() const { return false; } }; //____________________________________________________________________________// template<typename Iter> struct static_any : static_any_base { static_any( Iter const& t ) : m_it( t ) {} mutable Iter m_it; }; //____________________________________________________________________________// typedef static_any_base const& static_any_t; //____________________________________________________________________________// template<typename Iter> inline Iter& static_any_cast( static_any_t a, Iter* = 0 ) { return static_cast<Iter&>( static_cast<static_any<Iter> const&>( a ).m_it ); } //____________________________________________________________________________// // ************************************************************************** // // ************** is_const ************** // // ************************************************************************** // template<typename C> inline is_const<C> is_const_coll( C& ) { return is_const<C>(); } //____________________________________________________________________________// // ************************************************************************** // // ************** begin ************** // // ************************************************************************** // template<typename C> inline static_any<BOOST_DEDUCED_TYPENAME C::iterator> begin( C& t, mpl::false_ ) { return static_any<BOOST_DEDUCED_TYPENAME C::iterator>( t.begin() ); } //____________________________________________________________________________// template<typename C> inline static_any<BOOST_DEDUCED_TYPENAME C::const_iterator> begin( C const& t, mpl::true_ ) { return static_any<BOOST_DEDUCED_TYPENAME C::const_iterator>( t.begin() ); } //____________________________________________________________________________// // ************************************************************************** // // ************** end ************** // // ************************************************************************** // template<typename C> inline static_any<BOOST_DEDUCED_TYPENAME C::iterator> end( C& t, mpl::false_ ) { return static_any<BOOST_DEDUCED_TYPENAME C::iterator>( t.end() ); } //____________________________________________________________________________// template<typename C> inline static_any<BOOST_DEDUCED_TYPENAME C::const_iterator> end( C const& t, mpl::true_ ) { return static_any<BOOST_DEDUCED_TYPENAME C::const_iterator>( t.end() ); } //____________________________________________________________________________// // ************************************************************************** // // ************** done ************** // // ************************************************************************** // template<typename C> inline bool done( static_any_t cur, static_any_t end, C&, mpl::false_ ) { return static_any_cast<BOOST_DEDUCED_TYPENAME C::iterator>( cur ) == static_any_cast<BOOST_DEDUCED_TYPENAME C::iterator>( end ); } //____________________________________________________________________________// template<typename C> inline bool done( static_any_t cur, static_any_t end, C const&, mpl::true_ ) { return static_any_cast<BOOST_DEDUCED_TYPENAME C::const_iterator>( cur ) == static_any_cast<BOOST_DEDUCED_TYPENAME C::const_iterator>( end ); } //____________________________________________________________________________// // ************************************************************************** // // ************** next ************** // // ************************************************************************** // template<typename C> inline void next( static_any_t cur, C&, mpl::false_ ) { ++static_any_cast<BOOST_DEDUCED_TYPENAME C::iterator>( cur ); } //____________________________________________________________________________// template<typename C> inline void next( static_any_t cur, C const&, mpl::true_ ) { ++static_any_cast<BOOST_DEDUCED_TYPENAME C::const_iterator>( cur ); } //____________________________________________________________________________// // ************************************************************************** // // ************** prev ************** // // ************************************************************************** // template<typename C> inline void prev( static_any_t cur, C&, mpl::false_ ) { --static_any_cast<BOOST_DEDUCED_TYPENAME C::iterator>( cur ); } //____________________________________________________________________________// template<typename C> inline void prev( static_any_t cur, C const&, mpl::true_ ) { --static_any_cast<BOOST_DEDUCED_TYPENAME C::const_iterator>( cur ); } //____________________________________________________________________________// // ************************************************************************** // // ************** deref ************** // // ************************************************************************** // template<class RefType,typename C> inline RefType deref( static_any_t cur, C&, ::boost::type<RefType>, mpl::false_ ) { return *static_any_cast<BOOST_DEDUCED_TYPENAME C::iterator>( cur ); } //____________________________________________________________________________// template<class RefType,typename C> inline RefType deref( static_any_t cur, C const&, ::boost::type<RefType>, mpl::true_ ) { return *static_any_cast<BOOST_DEDUCED_TYPENAME C::const_iterator>( cur ); } //____________________________________________________________________________// // ************************************************************************** // // ************** BOOST_TEST_FOREACH ************** // // ************************************************************************** // #define BOOST_TEST_FE_ANY ::boost::unit_test::for_each::static_any_t #define BOOST_TEST_FE_IS_CONST( COL ) ::boost::unit_test::for_each::is_const_coll( COL ) #define BOOST_TEST_FE_BEG( COL ) \ ::boost::unit_test::for_each::begin( \ COL, \ BOOST_TEST_FE_IS_CONST( COL ) ) \ /**/ #define BOOST_TEST_FE_END( COL ) \ ::boost::unit_test::for_each::end( \ COL, \ BOOST_TEST_FE_IS_CONST( COL ) ) \ /**/ #define BOOST_TEST_FE_DONE( COL ) \ ::boost::unit_test::for_each::done( \ BOOST_TEST_FE_CUR_VAR, \ BOOST_TEST_FE_END_VAR, \ COL, \ BOOST_TEST_FE_IS_CONST( COL ) ) \ /**/ #define BOOST_TEST_FE_NEXT( COL ) \ ::boost::unit_test::for_each::next( \ BOOST_TEST_FE_CUR_VAR, \ COL, \ BOOST_TEST_FE_IS_CONST( COL ) ) \ /**/ #define BOOST_TEST_FE_PREV( COL ) \ ::boost::unit_test::for_each::prev( \ BOOST_TEST_FE_CUR_VAR, \ COL, \ BOOST_TEST_FE_IS_CONST( COL ) ) \ /**/ #define BOOST_FOREACH_NOOP(COL) \ ((void)&(COL)) #define BOOST_TEST_FE_DEREF( COL, RefType ) \ ::boost::unit_test::for_each::deref( \ BOOST_TEST_FE_CUR_VAR, \ COL, \ ::boost::type<RefType >(), \ BOOST_TEST_FE_IS_CONST( COL ) ) \ /**/ #if BOOST_WORKAROUND( BOOST_MSVC, == 1310 ) #define BOOST_TEST_LINE_NUM #else #define BOOST_TEST_LINE_NUM __LINE__ #endif #define BOOST_TEST_FE_CUR_VAR BOOST_JOIN( _fe_cur_, BOOST_TEST_LINE_NUM ) #define BOOST_TEST_FE_END_VAR BOOST_JOIN( _fe_end_, BOOST_TEST_LINE_NUM ) #define BOOST_TEST_FE_CON_VAR BOOST_JOIN( _fe_con_, BOOST_TEST_LINE_NUM ) #define BOOST_TEST_FOREACH( RefType, var, COL ) \ if( BOOST_TEST_FE_ANY BOOST_TEST_FE_CUR_VAR = BOOST_TEST_FE_BEG( COL ) ) {} else \ if( BOOST_TEST_FE_ANY BOOST_TEST_FE_END_VAR = BOOST_TEST_FE_END( COL ) ) {} else \ for( bool BOOST_TEST_FE_CON_VAR = true; \ BOOST_TEST_FE_CON_VAR && !BOOST_TEST_FE_DONE( COL ); \ BOOST_TEST_FE_CON_VAR ? BOOST_TEST_FE_NEXT( COL ) : BOOST_FOREACH_NOOP( COL )) \ \ if( (BOOST_TEST_FE_CON_VAR = false, false) ) {} else \ for( RefType var = BOOST_TEST_FE_DEREF( COL, RefType ); \ !BOOST_TEST_FE_CON_VAR; BOOST_TEST_FE_CON_VAR = true ) \ /**/ #define BOOST_TEST_REVERSE_FOREACH( RefType, var, COL ) \ if( BOOST_TEST_FE_ANY BOOST_TEST_FE_CUR_VAR = BOOST_TEST_FE_END( COL ) ) {} else \ if( BOOST_TEST_FE_ANY BOOST_TEST_FE_END_VAR = BOOST_TEST_FE_BEG( COL ) ) {} else \ for( bool BOOST_TEST_FE_CON_VAR = true; \ BOOST_TEST_FE_CON_VAR && !BOOST_TEST_FE_DONE( COL ); ) \ \ if( (BOOST_TEST_FE_CON_VAR = false, false) ) {} else \ if( (BOOST_TEST_FE_PREV( COL ), false) ) {} else \ for( RefType var = BOOST_TEST_FE_DEREF( COL, RefType ); \ !BOOST_TEST_FE_CON_VAR; BOOST_TEST_FE_CON_VAR = true ) \ /**/ //____________________________________________________________________________// } // namespace for_each } // namespace unit_test } // namespace boost #include <boost/test/detail/enable_warnings.hpp> #endif // BOOST_TEST_UTILS_FOREACH_HPP
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