1 | // (C) Copyright John Maddock 2005. |
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2 | // Use, modification and distribution are subject to the |
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3 | // Boost Software License, Version 1.0. (See accompanying file |
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4 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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5 | |
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6 | #ifndef BOOST_TR1_VERIFY_FUNCTOR_HPP |
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7 | #define BOOST_TR1_VERIFY_FUNCTOR_HPP |
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8 | |
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9 | #include <boost/type_traits/is_base_and_derived.hpp> |
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10 | #include <boost/type_traits/is_same.hpp> |
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11 | #include <boost/type_traits/remove_reference.hpp> |
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12 | #include <boost/static_assert.hpp> |
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13 | #include "verify_return.hpp" |
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14 | |
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15 | template <class F, class R> |
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16 | void verify_nullary_functor(F f, R) |
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17 | { |
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18 | verify_return_type(f(), R()); |
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19 | } |
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20 | |
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21 | template <class F, class B> |
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22 | void verify_unary_functor(F f, B) |
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23 | { |
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24 | #ifndef NO_INHERT_TEST |
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25 | BOOST_STATIC_ASSERT( (::boost::is_base_and_derived<B, F>::value)); |
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26 | #endif |
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27 | typedef typename B::argument_type arg_type; |
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28 | typedef typename B::result_type result_type; |
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29 | typedef typename F::argument_type b_arg_type; |
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30 | typedef typename F::result_type b_result_type; |
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31 | BOOST_STATIC_ASSERT((::boost::is_same<arg_type, b_arg_type>::value)); |
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32 | BOOST_STATIC_ASSERT((::boost::is_same<result_type, b_result_type>::value)); |
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33 | static arg_type a; |
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34 | |
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35 | typedef typename boost::remove_reference<result_type>::type result_value; |
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36 | verify_return_type(f(a), result_value()); |
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37 | } |
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38 | |
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39 | template <class F, class B> |
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40 | void verify_field_functor(F f, B) |
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41 | { |
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42 | // same as verify_unary_functor, but no nested result_type |
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43 | // because it depends on the argument type. |
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44 | typedef typename B::argument_type arg_type; |
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45 | typedef typename B::result_type result_type; |
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46 | static arg_type a; |
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47 | |
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48 | typedef typename boost::remove_reference<result_type>::type result_value; |
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49 | verify_return_type(f(a), result_value()); |
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50 | result_type r = f(a); |
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51 | (void)r; |
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52 | } |
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53 | |
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54 | |
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55 | template <class F, class B> |
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56 | void verify_binary_functor(F f, B) |
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57 | { |
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58 | #ifndef NO_INHERT_TEST |
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59 | BOOST_STATIC_ASSERT( (::boost::is_base_and_derived<B, F>::value)); |
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60 | #endif |
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61 | typedef typename B::first_argument_type b_arg1_type; |
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62 | typedef typename B::second_argument_type b_arg2_type; |
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63 | typedef typename B::result_type b_result_type; |
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64 | typedef typename F::first_argument_type arg1_type; |
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65 | typedef typename F::second_argument_type arg2_type; |
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66 | typedef typename F::result_type result_type; |
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67 | BOOST_STATIC_ASSERT((::boost::is_same<arg1_type, b_arg1_type>::value)); |
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68 | BOOST_STATIC_ASSERT((::boost::is_same<arg2_type, b_arg2_type>::value)); |
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69 | BOOST_STATIC_ASSERT((::boost::is_same<result_type, b_result_type>::value)); |
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70 | static arg1_type a; |
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71 | static arg2_type b; |
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72 | verify_return_type(f(a, b), result_type()); |
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73 | } |
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74 | |
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75 | #endif |
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76 | |
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