libcxx/test/std/concepts/concepts.object/regular.compile.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14, c++17
  10
  11 // template<class T>
  12 // concept regular = see below;
  13
  14 #include <concepts>
  15
  16 #include <deque>
  17 #include <forward_list>
  18 #include <list>
  19 #include <map>
  20 #include <memory>
  21 #include <optional>
  22 #include <stdexcept>
  23 #include <tuple>
  24 #include <unordered_map>
  25 #include <vector>
  26
  27 #include "type_classification/moveconstructible.h"
  28 #include "type_classification/semiregular.h"
  29
  30 static_assert(std::regular<int>);
  31 static_assert(std::regular<float>);
  32 static_assert(std::regular<double>);
  33 static_assert(std::regular<long double>);
  34 static_assert(std::regular<int volatile>);
  35 static_assert(std::regular<void*>);
  36 static_assert(std::regular<int*>);
  37 static_assert(std::regular<int const*>);
  38 static_assert(std::regular<int volatile*>);
  39 static_assert(std::regular<int volatile const*>);
  40 static_assert(std::regular<int (*)()>);
  41
  42 struct S {};
  43 static_assert(!std::regular<S>);
  44 static_assert(std::regular<int S::*>);
  45 static_assert(std::regular<int (S::*)()>);
  46 static_assert(std::regular<int (S::*)() noexcept>);
  47 static_assert(std::regular<int (S::*)() &>);
  48 static_assert(std::regular<int (S::*)() & noexcept>);
  49 static_assert(std::regular<int (S::*)() &&>);
  50 static_assert(std::regular<int (S::*)() && noexcept>);
  51 static_assert(std::regular<int (S::*)() const>);
  52 static_assert(std::regular<int (S::*)() const noexcept>);
  53 static_assert(std::regular<int (S::*)() const&>);
  54 static_assert(std::regular<int (S::*)() const & noexcept>);
  55 static_assert(std::regular<int (S::*)() const&&>);
  56 static_assert(std::regular<int (S::*)() const && noexcept>);
  57 static_assert(std::regular<int (S::*)() volatile>);
  58 static_assert(std::regular<int (S::*)() volatile noexcept>);
  59 static_assert(std::regular<int (S::*)() volatile&>);
  60 static_assert(std::regular<int (S::*)() volatile & noexcept>);
  61 static_assert(std::regular<int (S::*)() volatile&&>);
  62 static_assert(std::regular<int (S::*)() volatile && noexcept>);
  63 static_assert(std::regular<int (S::*)() const volatile>);
  64 static_assert(std::regular<int (S::*)() const volatile noexcept>);
  65 static_assert(std::regular<int (S::*)() const volatile&>);
  66 static_assert(std::regular<int (S::*)() const volatile & noexcept>);
  67 static_assert(std::regular<int (S::*)() const volatile&&>);
  68 static_assert(std::regular<int (S::*)() const volatile && noexcept>);
  69
  70 union U {};
  71 static_assert(!std::regular<U>);
  72 static_assert(std::regular<int U::*>);
  73 static_assert(std::regular<int (U::*)()>);
  74 static_assert(std::regular<int (U::*)() noexcept>);
  75 static_assert(std::regular<int (U::*)() &>);
  76 static_assert(std::regular<int (U::*)() & noexcept>);
  77 static_assert(std::regular<int (U::*)() &&>);
  78 static_assert(std::regular<int (U::*)() && noexcept>);
  79 static_assert(std::regular<int (U::*)() const>);
  80 static_assert(std::regular<int (U::*)() const noexcept>);
  81 static_assert(std::regular<int (U::*)() const&>);
  82 static_assert(std::regular<int (U::*)() const & noexcept>);
  83 static_assert(std::regular<int (U::*)() const&&>);
  84 static_assert(std::regular<int (U::*)() const && noexcept>);
  85 static_assert(std::regular<int (U::*)() volatile>);
  86 static_assert(std::regular<int (U::*)() volatile noexcept>);
  87 static_assert(std::regular<int (U::*)() volatile&>);
  88 static_assert(std::regular<int (U::*)() volatile & noexcept>);
  89 static_assert(std::regular<int (U::*)() volatile&&>);
  90 static_assert(std::regular<int (U::*)() volatile && noexcept>);
  91 static_assert(std::regular<int (U::*)() const volatile>);
  92 static_assert(std::regular<int (U::*)() const volatile noexcept>);
  93 static_assert(std::regular<int (U::*)() const volatile&>);
  94 static_assert(std::regular<int (U::*)() const volatile & noexcept>);
  95 static_assert(std::regular<int (U::*)() const volatile&&>);
  96 static_assert(std::regular<int (U::*)() const volatile && noexcept>);
  97
  98 static_assert(std::regular<std::vector<int> >);
  99 static_assert(std::regular<std::deque<int> >);
 100 static_assert(std::regular<std::forward_list<int> >);
 101 static_assert(std::regular<std::list<int> >);
 102 static_assert(std::regular<std::shared_ptr<std::unique_ptr<int> > >);
 103 static_assert(std::regular<std::optional<std::vector<int> > >);
 104 static_assert(std::regular<std::vector<int> >);
 105 static_assert(std::regular<std::vector<std::unique_ptr<int> > >);
 106 static_assert(std::semiregular<std::in_place_t> &&
 107               !std::regular<std::in_place_t>);
 108
 109 static_assert(!std::regular<has_volatile_member>);
 110 static_assert(!std::regular<has_array_member>);
 111
 112 // Not objects
 113 static_assert(!std::regular<void>);
 114 static_assert(!std::regular<int&>);
 115 static_assert(!std::regular<int const&>);
 116 static_assert(!std::regular<int volatile&>);
 117 static_assert(!std::regular<int const volatile&>);
 118 static_assert(!std::regular<int&&>);
 119 static_assert(!std::regular<int const&&>);
 120 static_assert(!std::regular<int volatile&&>);
 121 static_assert(!std::regular<int const volatile&&>);
 122 static_assert(!std::regular<int()>);
 123 static_assert(!std::regular<int (&)()>);
 124 static_assert(!std::regular<int[5]>);
 125
 126 // not copyable
 127 static_assert(!std::regular<std::unique_ptr<int> >);
 128 static_assert(!std::regular<int const>);
 129 static_assert(!std::regular<int const volatile>);
 130 static_assert(!std::regular<volatile_copy_assignment volatile>);
 131 static_assert(!std::regular<no_copy_constructor>);
 132 static_assert(!std::regular<no_copy_assignment>);
 133 static_assert(!std::regular<no_copy_assignment_mutable>);
 134 static_assert(!std::regular<derived_from_noncopyable>);
 135 static_assert(!std::regular<has_noncopyable>);
 136 static_assert(!std::regular<has_const_member>);
 137 static_assert(!std::regular<has_cv_member>);
 138 static_assert(!std::regular<has_lvalue_reference_member>);
 139 static_assert(!std::regular<has_rvalue_reference_member>);
 140 static_assert(!std::regular<has_function_ref_member>);
 141 static_assert(!std::regular<deleted_assignment_from_const_rvalue>);
 142
 143 // not default_initializable
 144 static_assert(!std::regular<std::runtime_error>);
 145 static_assert(
 146     !std::regular<std::tuple<std::runtime_error, std::overflow_error> >);
 147 static_assert(!std::regular<std::nullopt_t>);
 148 static_assert(!std::regular<no_copy_constructor>);
 149 static_assert(!std::regular<no_copy_assignment>);
 150 static_assert(std::is_copy_assignable_v<no_copy_assignment_mutable> &&
 151               !std::regular<no_copy_assignment_mutable>);
 152 static_assert(!std::regular<derived_from_noncopyable>);
 153 static_assert(!std::regular<has_noncopyable>);
 154
 155 static_assert(!std::regular<derived_from_non_default_initializable>);
 156 static_assert(!std::regular<has_non_default_initializable>);
 157
 158 // not equality_comparable
 159 static_assert(!std::regular<const_copy_assignment const>);
 160 static_assert(!std::regular<cv_copy_assignment const volatile>);
 161
 162 struct is_equality_comparable {
 163   bool operator==(is_equality_comparable const&) const = default;
 164 };
 165 static_assert(std::regular<is_equality_comparable>);