1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 11 // <string_view> 12 13 // [string.view.capacity], capacity 14 // constexpr size_type size() const noexcept; 15 // constexpr size_type length() const noexcept; 16 // constexpr size_type max_size() const noexcept; 17 // constexpr bool empty() const noexcept; 18 19 #include <experimental/string_view> 20 #include <cassert> 21 22 #include "test_macros.h" 23 24 template<typename SV> 25 void test1 () { 26 #if TEST_STD_VER > 11 27 { 28 constexpr SV sv1; 29 static_assert ( sv1.size() == 0, "" ); 30 static_assert ( sv1.empty(), ""); 31 static_assert ( sv1.size() == sv1.length(), "" ); 32 static_assert ( sv1.max_size() > sv1.size(), ""); 33 } 34 #endif 35 36 { 37 SV sv1; 38 assert ( sv1.size() == 0 ); 39 assert ( sv1.empty()); 40 assert ( sv1.size() == sv1.length()); 41 assert ( sv1.max_size() > sv1.size()); 42 } 43 } 44 45 template<typename CharT> 46 void test2 ( const CharT *s, size_t len ) { 47 { 48 std::experimental::basic_string_view<CharT> sv1 ( s ); 49 assert ( sv1.size() == len ); 50 assert ( sv1.data() == s ); 51 assert ( sv1.empty() == (len == 0)); 52 assert ( sv1.size() == sv1.length()); 53 assert ( sv1.max_size() > sv1.size()); 54 } 55 } 56 57 int main () { 58 typedef std::experimental::string_view string_view; 59 typedef std::experimental::u16string_view u16string_view; 60 typedef std::experimental::u32string_view u32string_view; 61 typedef std::experimental::wstring_view wstring_view; 62 63 test1<string_view> (); 64 test1<u16string_view> (); 65 test1<u32string_view> (); 66 test1<wstring_view> (); 67 68 test2 ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 ); 69 test2 ( "ABCDE", 5 ); 70 test2 ( "a", 1 ); 71 test2 ( "", 0 ); 72 73 test2 ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 ); 74 test2 ( L"ABCDE", 5 ); 75 test2 ( L"a", 1 ); 76 test2 ( L"", 0 ); 77 78 #if TEST_STD_VER >= 11 79 test2 ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 ); 80 test2 ( u"ABCDE", 5 ); 81 test2 ( u"a", 1 ); 82 test2 ( u"", 0 ); 83 84 test2 ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 ); 85 test2 ( U"ABCDE", 5 ); 86 test2 ( U"a", 1 ); 87 test2 ( U"", 0 ); 88 #endif 89 } 90