forked from OSchip/llvm-project
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
// <string_view>
|
|
|
|
// constexpr const _CharT& operator[](size_type _pos) const;
|
|
|
|
#include <experimental/string_view>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
|
|
template <typename CharT>
|
|
void test ( const CharT *s, size_t len ) {
|
|
std::experimental::basic_string_view<CharT> sv ( s, len );
|
|
assert ( sv.length() == len );
|
|
for ( size_t i = 0; i < len; ++i ) {
|
|
assert ( sv[i] == s[i] );
|
|
assert ( &sv[i] == s + i );
|
|
}
|
|
}
|
|
|
|
int main () {
|
|
test ( "ABCDE", 5 );
|
|
test ( "a", 1 );
|
|
|
|
test ( L"ABCDE", 5 );
|
|
test ( L"a", 1 );
|
|
|
|
#if TEST_STD_VER >= 11
|
|
test ( u"ABCDE", 5 );
|
|
test ( u"a", 1 );
|
|
|
|
test ( U"ABCDE", 5 );
|
|
test ( U"a", 1 );
|
|
#endif
|
|
|
|
#if _LIBCPP_STD_VER > 11
|
|
{
|
|
constexpr std::experimental::basic_string_view<char> sv ( "ABC", 2 );
|
|
static_assert ( sv.length() == 2, "" );
|
|
static_assert ( sv[0] == 'A', "" );
|
|
static_assert ( sv[1] == 'B', "" );
|
|
}
|
|
#endif
|
|
}
|