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8ae5fc5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | #include <metal.hpp>
#include "example.hpp"
#include <memory>
#include <tuple>
#include <type_traits>
#if !defined(METAL_WORKAROUND)
HIDE(
/// [lbd1]
template<class T>
using expr = T*;
using lbd = metal::lambda<expr>;
/// [lbd1]
IS_SAME(metal::is_lambda<lbd>, metal::true_);
)
HIDE(
/// [is_lambda]
template<class T>
using expr = T*;
IS_SAME(metal::is_lambda<void>, metal::false_);
IS_SAME(metal::is_lambda<metal::lambda<expr>>, metal::true_);
IS_SAME(metal::is_lambda<metal::trait<std::is_pointer>>, metal::true_);
IS_SAME(metal::is_lambda<metal::lazy<std::add_pointer>>, metal::true_);
/// [is_lambda]
)
#endif
HIDE(
/// [as_lambda]
IS_SAME(metal::as_lambda<std::shared_ptr<int>>, metal::lambda<std::shared_ptr>);
IS_SAME(metal::as_lambda<std::unique_ptr<int>>, metal::lambda<std::unique_ptr>);
IS_SAME(metal::as_lambda<std::tuple<int, char, float>>, metal::lambda<std::tuple>);
/// [as_lambda]
)
HIDE(
/// [trait]
IS_SAME(metal::invoke<metal::trait<std::is_fundamental>, int>, metal::true_);
IS_SAME(metal::invoke<metal::trait<std::is_fundamental>, void>, metal::true_);
IS_SAME(metal::invoke<metal::trait<std::is_integral>, int>, metal::true_);
IS_SAME(metal::invoke<metal::trait<std::is_integral>, void>, metal::false_);
IS_SAME(metal::invoke<metal::trait<std::is_class>, int>, metal::false_);
IS_SAME(metal::invoke<metal::trait<std::is_class>, void>, metal::false_);
IS_SAME(metal::invoke<metal::trait<std::is_convertible>, int*, void*>, metal::true_);
IS_SAME(metal::invoke<metal::trait<std::is_convertible>, void*, int*>, metal::false_);
/// [trait]
)
HIDE(
/// [lazy]
IS_SAME(metal::invoke<metal::lazy<std::add_pointer>, int>, int*);
IS_SAME(metal::invoke<metal::lazy<std::decay>, int()>, int(*)());
IS_SAME(metal::invoke<metal::lazy<std::common_type>, int[], void*>, void*);
/// [lazy]
)
HIDE(
/// [is_invocable]
template<class val>
using array = metal::identity<val[]>; // MSVC friendly
using lbd = metal::lambda<array>;
IS_SAME(metal::is_invocable<lbd, int, int>, metal::false_); // arity mismatch
IS_SAME(metal::is_invocable<lbd, void>, metal::false_); // void[] is ill-formed
IS_SAME(metal::is_invocable<lbd, int>, metal::true_);
/// [is_invocable]
)
HIDE(
/// [always]
using void_ = metal::always<void>;
IS_SAME(metal::invoke<void_>, void);
IS_SAME(metal::invoke<void_, bool, char, long, float>, void);
IS_SAME(metal::invoke<metal::always<void_>, bool, char, long, float>, void_);
/// [always]
)
HIDE(
/// [arg]
IS_SAME(metal::invoke<metal::arg<1>, bool, char, long, float>, bool);
IS_SAME(metal::invoke<metal::arg<2>, bool, char, long, float>, char);
IS_SAME(metal::invoke<metal::arg<3>, bool, char, long, float>, long);
IS_SAME(metal::invoke<metal::arg<4>, bool, char, long, float>, float);
/// [arg]
)
#if !defined(METAL_WORKAROUND)
HIDE(
/// [invoke]
using lbd = metal::lazy<std::common_type>;
IS_SAME(metal::invoke<lbd, bool, char, long, float>, float);
/// [invoke]
)
HIDE(
/// [apply]
using lbd = metal::lazy<std::common_type>;
IS_SAME(metal::apply<lbd, metal::list<bool, char, long, float>>, float);
/// [apply]
)
HIDE(
/// [partial]
using promote = metal::partial<metal::lazy<std::common_type>, int>;
IS_SAME(metal::invoke<promote, char>, int);
IS_SAME(metal::invoke<promote, short>, int);
IS_SAME(metal::invoke<promote, long>, long);
/// [partial]
)
HIDE(
/// [bind]
using promote = metal::bind<
metal::lazy<std::common_type>,
metal::always<int>,
metal::_1 // equivalent to metal::arg<1>
>;
IS_SAME(metal::invoke<promote, char>, int);
IS_SAME(metal::invoke<promote, short>, int);
IS_SAME(metal::invoke<promote, long>, long);
using uac = metal::bind< // usual arithmetic conversion
metal::lazy<std::common_type>,
metal::bind<promote, metal::_1>,
metal::bind<promote, metal::_2>
>;
IS_SAME(metal::invoke<uac, int, long>, long);
IS_SAME(metal::invoke<uac, char, char>, int);
IS_SAME(metal::invoke<uac, short, float>, float);
/// [bind]
)
#endif
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