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 // <string_view>
11
12 // size_type copy(charT* s, size_type n, size_type pos = 0) const;
13
14 // Throws: out_of_range if pos > size().
15 // Remarks: Let rlen be the smaller of n and size() - pos.
16 // Requires: [s, s+rlen) is a valid range.
17 // Effects: Equivalent to std::copy_n(begin() + pos, rlen, s).
18 // Returns: rlen.
19
20
21 #include <experimental/string_view>
22 #include <cassert>
23
24 #include "test_macros.h"
25
26 template<typename CharT>
test1(std::experimental::basic_string_view<CharT> sv,size_t n,size_t pos)27 void test1 ( std::experimental::basic_string_view<CharT> sv, size_t n, size_t pos ) {
28 const size_t rlen = std::min ( n, sv.size() - pos );
29
30 CharT *dest1 = new CharT [rlen + 1]; dest1[rlen] = 0;
31 CharT *dest2 = new CharT [rlen + 1]; dest2[rlen] = 0;
32
33 if (pos > sv.size()) {
34 #ifndef TEST_HAS_NO_EXCEPTIONS
35 try {
36 sv.copy(dest1, n, pos);
37 assert(false);
38 } catch (const std::out_of_range&) {
39 } catch (...) {
40 assert(false);
41 }
42 #endif
43 } else {
44 sv.copy(dest1, n, pos);
45 std::copy_n(sv.begin() + pos, rlen, dest2);
46 for ( size_t i = 0; i <= rlen; ++i )
47 assert ( dest1[i] == dest2[i] );
48 }
49 delete [] dest1;
50 delete [] dest2;
51 }
52
53
54 template<typename CharT>
test(const CharT * s)55 void test ( const CharT *s ) {
56 typedef std::experimental::basic_string_view<CharT> string_view_t;
57
58 string_view_t sv1 ( s );
59
60 test1(sv1, 0, 0);
61 test1(sv1, 1, 0);
62 test1(sv1, 20, 0);
63 test1(sv1, sv1.size(), 0);
64 test1(sv1, 20, string_view_t::npos);
65
66 test1(sv1, 0, 3);
67 test1(sv1, 2, 3);
68 test1(sv1, 100, 3);
69 test1(sv1, 100, string_view_t::npos);
70
71 test1(sv1, sv1.size(), string_view_t::npos);
72
73 test1(sv1, sv1.size() + 1, 0);
74 test1(sv1, sv1.size() + 1, 1);
75 test1(sv1, sv1.size() + 1, string_view_t::npos);
76
77 }
78
main()79 int main () {
80 test ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
81 test ( "ABCDE");
82 test ( "a" );
83 test ( "" );
84
85 test ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
86 test ( L"ABCDE" );
87 test ( L"a" );
88 test ( L"" );
89
90 #if TEST_STD_VER >= 11
91 test ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
92 test ( u"ABCDE" );
93 test ( u"a" );
94 test ( u"" );
95
96 test ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
97 test ( U"ABCDE" );
98 test ( U"a" );
99 test ( U"" );
100 #endif
101 }
102