| /*============================================================================= |
| Copyright (c) 1999-2003 Jaakko Jarvi |
| Copyright (c) 2001-2006 Joel de Guzman |
| |
| 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) |
| ==============================================================================*/ |
| #include <boost/detail/lightweight_test.hpp> |
| #include <boost/fusion/sequence/intrinsic/at.hpp> |
| |
| #if !defined(FUSION_AT) |
| #define FUSION_AT at_c |
| #endif |
| |
| #if !defined(FUSION_MAKE) |
| #define FUSION_MAKE BOOST_PP_CAT(make_, FUSION_SEQUENCE) |
| #endif |
| |
| #if !defined(FUSION_TIE) |
| #define FUSION_TIE BOOST_PP_CAT(FUSION_SEQUENCE, _tie) |
| #endif |
| |
| namespace test_detail |
| { |
| // something to prevent warnings for unused variables |
| template<class T> void dummy(const T&) {} |
| |
| // no public default constructor |
| class foo |
| { |
| public: |
| |
| explicit foo(int v) : val(v) {} |
| |
| bool operator==(const foo& other) const |
| { |
| return val == other.val; |
| } |
| |
| private: |
| |
| foo() {} |
| int val; |
| }; |
| } |
| |
| void |
| test() |
| { |
| using namespace boost::fusion; |
| using namespace test_detail; |
| |
| int a; |
| char b; |
| foo c(5); |
| |
| FUSION_TIE(a, b, c) = FUSION_MAKE(2, 'a', foo(3)); |
| BOOST_TEST(a == 2); |
| BOOST_TEST(b == 'a'); |
| BOOST_TEST(c == foo(3)); |
| |
| FUSION_TIE(a, ignore, c) = FUSION_MAKE((short int)5, false, foo(5)); |
| BOOST_TEST(a == 5); |
| BOOST_TEST(b == 'a'); |
| BOOST_TEST(c == foo(5)); |
| |
| int i, j; |
| FUSION_TIE(i, j) = FUSION_MAKE(1, 2); |
| BOOST_TEST(i == 1 && j == 2); |
| |
| FUSION_SEQUENCE<int, int, float> ta; |
| |
| #if defined(FUSION_TEST_FAIL) |
| ta = std::FUSION_MAKE(1, 2); // should fail, tuple is of length 3, not 2 |
| #endif |
| |
| dummy(ta); |
| |
| // ties cannot be rebound |
| int d = 3; |
| FUSION_SEQUENCE<int&> ti(a); |
| BOOST_TEST(&FUSION_AT<0>(ti) == &a); |
| ti = FUSION_SEQUENCE<int&>(d); |
| BOOST_TEST(&FUSION_AT<0>(ti) == &a); |
| } |