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 12 // template<class T> 13 // concept common_range; 14 15 #include <ranges> 16 17 #include "test_iterators.h" 18 #include "test_range.h" 19 20 namespace stdr = std::ranges; 21 22 static_assert(!stdr::common_range<test_range<cpp17_input_iterator> >); 23 static_assert(!stdr::common_range<test_range<cpp17_input_iterator> const>); 24 25 static_assert(!stdr::common_range<test_non_const_range<cpp17_input_iterator> >); 26 static_assert(!stdr::common_range<test_non_const_range<cpp17_input_iterator> const>); 27 28 static_assert(stdr::common_range<test_common_range<cpp17_input_iterator> >); 29 static_assert(stdr::common_range<test_common_range<cpp17_input_iterator> const>); 30 31 static_assert(stdr::common_range<test_non_const_common_range<cpp17_input_iterator> >); 32 static_assert(!stdr::common_range<test_non_const_common_range<cpp17_input_iterator> const>); 33 34 struct subtly_not_common { 35 int* begin() const; 36 int const* end() const; 37 }; 38 static_assert(stdr::range<subtly_not_common> && !stdr::common_range<subtly_not_common>); 39 static_assert(stdr::range<subtly_not_common const> && !stdr::common_range<subtly_not_common const>); 40 41 struct common_range_non_const_only { 42 int* begin() const; 43 int* end(); 44 int const* end() const; 45 }; 46 static_assert(stdr::range<common_range_non_const_only>&& stdr::common_range<common_range_non_const_only>); 47 static_assert(stdr::range<common_range_non_const_only const> && !stdr::common_range<common_range_non_const_only const>); 48 49 struct common_range_const_only { 50 int* begin(); 51 int const* begin() const; 52 int const* end() const; 53 }; 54 static_assert(stdr::range<common_range_const_only> && !stdr::common_range<common_range_const_only>); 55 static_assert(stdr::range<common_range_const_only const>&& stdr::common_range<common_range_const_only const>); 56