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 // UNSUPPORTED: libcpp-no-concepts
11 // UNSUPPORTED: gcc-10
12 
13 // template<class In>
14 // concept std::weakly_incrementable;
15 
16 #include <iterator>
17 
18 #include <concepts>
19 #include <memory>
20 #include <optional>
21 
22 #include "../incrementable.h"
23 
24 static_assert(std::weakly_incrementable<int>);
25 static_assert(std::weakly_incrementable<int*>);
26 static_assert(std::weakly_incrementable<int**>);
27 static_assert(!std::weakly_incrementable<int[]>);
wait_for_statsnull28 static_assert(!std::weakly_incrementable<int[10]>);
29 static_assert(!std::weakly_incrementable<double>);
30 static_assert(!std::weakly_incrementable<int&>);
31 static_assert(!std::weakly_incrementable<int()>);
32 static_assert(!std::weakly_incrementable<int (*)()>);
33 static_assert(!std::weakly_incrementable<int (&)()>);
34 
35 struct S {};
36 static_assert(!std::weakly_incrementable<int S::*>);
37 
38 #define CHECK_POINTER_TO_MEMBER_FUNCTIONS(qualifier)                                                                   \
39   static_assert(!std::weakly_incrementable<int (S::*)() qualifier>);                                                   \
40   static_assert(!std::weakly_incrementable<int (S::*)() qualifier noexcept>);                                          \
41   static_assert(!std::weakly_incrementable<int (S::*)() qualifier&>);                                                  \
42   static_assert(!std::weakly_incrementable<int (S::*)() qualifier & noexcept>);                                        \
43   static_assert(!std::weakly_incrementable<int (S::*)() qualifier&&>);                                                 \
44   static_assert(!std::weakly_incrementable < int (S::*)() qualifier&& noexcept >);
45 
46 #define NO_QUALIFIER
47 CHECK_POINTER_TO_MEMBER_FUNCTIONS(NO_QUALIFIER);
48 CHECK_POINTER_TO_MEMBER_FUNCTIONS(const);
49 CHECK_POINTER_TO_MEMBER_FUNCTIONS(volatile);
50 CHECK_POINTER_TO_MEMBER_FUNCTIONS(const volatile);
51 
52 static_assert(std::weakly_incrementable<postfix_increment_returns_void>);
53 static_assert(std::weakly_incrementable<postfix_increment_returns_copy>);
54 static_assert(std::weakly_incrementable<has_integral_minus>);
55 static_assert(std::weakly_incrementable<has_distinct_difference_type_and_minus>);
56 static_assert(!std::weakly_incrementable<missing_difference_type>);
57 static_assert(!std::weakly_incrementable<floating_difference_type>);
58 static_assert(!std::weakly_incrementable<non_const_minus>);
59 static_assert(!std::weakly_incrementable<non_integral_minus>);
60 static_assert(!std::weakly_incrementable<bad_difference_type_good_minus>);
61 static_assert(!std::weakly_incrementable<not_movable>);
62 static_assert(!std::weakly_incrementable<preinc_not_declared>);
63 static_assert(!std::weakly_incrementable<postinc_not_declared>);
64 static_assert(std::weakly_incrementable<not_default_initializable>);
65 static_assert(std::weakly_incrementable<incrementable_with_difference_type>);
66 static_assert(std::weakly_incrementable<incrementable_without_difference_type>);
67 static_assert(std::weakly_incrementable<difference_type_and_void_minus>);
68 static_assert(std::weakly_incrementable<noncopyable_with_difference_type>);
69 static_assert(std::weakly_incrementable<noncopyable_without_difference_type>);
70 static_assert(std::weakly_incrementable<noncopyable_with_difference_type_and_minus>);
71