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: libcpp-has-no-incomplete-ranges 12 13 // template<class R> 14 // concept common_range; 15 16 #include <ranges> 17 18 #include "test_iterators.h" 19 #include "test_range.h" 20 21 namespace stdr = std::ranges; 22 23 static_assert(!stdr::common_range<test_range<cpp17_input_iterator> >); 24 static_assert(!stdr::common_range<test_range<cpp17_input_iterator> const>); 25 26 static_assert(!stdr::common_range<test_non_const_range<cpp17_input_iterator> >); 27 static_assert(!stdr::common_range<test_non_const_range<cpp17_input_iterator> const>); 28 29 static_assert(stdr::common_range<test_common_range<cpp17_input_iterator> >); 30 static_assert(stdr::common_range<test_common_range<cpp17_input_iterator> const>); 31 32 static_assert(stdr::common_range<test_non_const_common_range<cpp17_input_iterator> >); 33 static_assert(!stdr::common_range<test_non_const_common_range<cpp17_input_iterator> const>); 34 35 struct subtly_not_common { 36 int* begin() const; 37 int const* end() const; 38 }; 39 static_assert(stdr::range<subtly_not_common> && !stdr::common_range<subtly_not_common>); 40 static_assert(stdr::range<subtly_not_common const> && !stdr::common_range<subtly_not_common const>); 41 42 struct common_range_non_const_only { 43 int* begin() const; 44 int* end(); 45 int const* end() const; 46 }; 47 static_assert(stdr::range<common_range_non_const_only>&& stdr::common_range<common_range_non_const_only>); 48 static_assert(stdr::range<common_range_non_const_only const> && !stdr::common_range<common_range_non_const_only const>); 49 50 struct common_range_const_only { 51 int* begin(); 52 int const* begin() const; 53 int const* end() const; 54 }; 55 static_assert(stdr::range<common_range_const_only> && !stdr::common_range<common_range_const_only>); 56 static_assert(stdr::range<common_range_const_only const>&& stdr::common_range<common_range_const_only const>); 57