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-has-no-incomplete-ranges
11
12 #include "test_macros.h"
13
14 TEST_CLANG_DIAGNOSTIC_IGNORED("-Wsign-compare")
15 TEST_GCC_DIAGNOSTIC_IGNORED("-Wsign-compare")
16 TEST_MSVC_DIAGNOSTIC_IGNORED(4018 4389) // various "signed/unsigned mismatch"
17
18 // constexpr auto end() const;
19 // constexpr iterator end() const requires same_as<W, Bound>;
20
21 #include <cassert>
22 #include <ranges>
23 #include <utility>
24
25 #include "types.h"
26
27 template<class T, class U>
testType(U u)28 constexpr void testType(U u) {
29 {
30 std::ranges::iota_view<T, U> io(T(0), u);
31 assert(std::ranges::next(io.begin(), 10) == io.end());
32 }
33 {
34 std::ranges::iota_view<T, U> io(T(10), u);
35 assert(io.begin() == io.end());
36 assert(io.begin() == std::move(io).end());
37 }
38 {
39 const std::ranges::iota_view<T, U> io(T(0), u);
40 assert(std::ranges::next(io.begin(), 10) == io.end());
41 assert(std::ranges::next(io.begin(), 10) == std::move(io).end());
42 }
43 {
44 const std::ranges::iota_view<T, U> io(T(10), u);
45 assert(io.begin() == io.end());
46 }
47
48 {
49 std::ranges::iota_view<T> io(T(0), std::unreachable_sentinel);
50 assert(io.begin() != io.end());
51 assert(std::ranges::next(io.begin()) != io.end());
52 assert(std::ranges::next(io.begin(), 10) != io.end());
53 }
54 {
55 const std::ranges::iota_view<T> io(T(0), std::unreachable_sentinel);
56 assert(io.begin() != io.end());
57 assert(std::ranges::next(io.begin()) != io.end());
58 assert(std::ranges::next(io.begin(), 10) != io.end());
59 }
60 }
61
test()62 constexpr bool test() {
63 testType<SomeInt>(SomeInt(10));
64 testType<SomeInt>(IntComparableWith(SomeInt(10)));
65 testType<signed long>(IntComparableWith<signed long>(10));
66 testType<unsigned long>(IntComparableWith<unsigned long>(10));
67 testType<int>(IntComparableWith<int>(10));
68 testType<int>(int(10));
69 testType<int>(unsigned(10));
70 testType<unsigned>(unsigned(10));
71 testType<unsigned>(int(10));
72 testType<unsigned>(IntComparableWith<unsigned>(10));
73 testType<short>(short(10));
74 testType<short>(IntComparableWith<short>(10));
75 testType<unsigned short>(IntComparableWith<unsigned short>(10));
76
77 return true;
78 }
79
main(int,char **)80 int main(int, char**) {
81 test();
82 static_assert(test());
83
84 return 0;
85 }
86