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 // class std::ranges::lazy_split_view::outer-iterator::value_type;
13
14 #include <ranges>
15
16 #include <cassert>
17 #include <concepts>
18 #include "../types.h"
19
20 using V = ValueTypeForward;
21 static_assert(std::ranges::forward_range<V>);
22 static_assert(std::ranges::view<V>);
23
24 static_assert(std::is_base_of_v<std::ranges::view_interface<ValueTypeForward>, ValueTypeForward>);
25
test()26 constexpr bool test() {
27 // empty()
28 {
29 {
30 SplitViewForward v("abc def", " ");
31 auto val = *v.begin();
32 assert(!val.empty());
33 }
34
35 {
36 SplitViewForward v;
37 auto val = *v.begin();
38 assert(val.empty());
39 }
40 }
41
42 // operator bool()
43 {
44 {
45 SplitViewForward v("abc def", " ");
46 auto val = *v.begin();
47 assert(val);
48 }
49
50 {
51 SplitViewForward v;
52 auto val = *v.begin();
53 assert(!val);
54 }
55 }
56
57 // front()
58 {
59 SplitViewForward v("abc def", " ");
60 auto val = *v.begin();
61 assert(val.front() == 'a');
62 }
63
64 return true;
65 }
66
main(int,char **)67 int main(int, char**) {
68 test();
69 static_assert(test());
70
71 return 0;
72 }
73