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Implement std::string_view as described in http://wg21.link/P0254R1. Reviewed as https://reviews.llvm.org/D21459

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@276238 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2016-07-21 05:31:24 +00:00
parent f50841f3ac
commit 1e00d6db31
100 changed files with 19172 additions and 731 deletions
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105
test/std/strings/basic.string/string.modifiers/string_assign/string_view.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// 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>
// basic_string<charT,traits,Allocator>&
// assign(basic_string_view<charT,traits> sv);
#include <string>
#include <string_view>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
#include "test_allocator.h"
template <class S, class SV>
void
test(S s, SV sv, S expected)
{
s.assign(sv);
LIBCPP_ASSERT(s.__invariants());
assert(s == expected);
}
template <class S, class SV>
void
testAlloc(S s, SV sv, const typename S::allocator_type& a)
{
s.assign(sv);
LIBCPP_ASSERT(s.__invariants());
assert(s == sv);
assert(s.get_allocator() == a);
}
int main()
{
{
typedef std::string S;
typedef std::string_view SV;
test(S(), SV(), S());
test(S(), SV("12345"), S("12345"));
test(S(), SV("1234567890"), S("1234567890"));
test(S(), SV("12345678901234567890"), S("12345678901234567890"));
test(S("12345"), SV(), S());
test(S("12345"), SV("12345"), S("12345"));
test(S("12345"), SV("1234567890"), S("1234567890"));
test(S("12345"), SV("12345678901234567890"), S("12345678901234567890"));
test(S("1234567890"), SV(), S());
test(S("1234567890"), SV("12345"), S("12345"));
test(S("1234567890"), SV("1234567890"), S("1234567890"));
test(S("1234567890"), SV("12345678901234567890"), S("12345678901234567890"));
test(S("12345678901234567890"), SV(), S());
test(S("12345678901234567890"), SV("12345"), S("12345"));
test(S("12345678901234567890"), SV("1234567890"), S("1234567890"));
test(S("12345678901234567890"), SV("12345678901234567890"),
S("12345678901234567890"));
testAlloc(S(), SV(), std::allocator<char>());
testAlloc(S(), SV("12345"), std::allocator<char>());
testAlloc(S(), SV("1234567890"), std::allocator<char>());
testAlloc(S(), SV("12345678901234567890"), std::allocator<char>());
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string <char, std::char_traits<char>, min_allocator<char>> S;
typedef std::basic_string_view<char, std::char_traits<char> > SV;
test(S(), SV(), S());
test(S(), SV("12345"), S("12345"));
test(S(), SV("1234567890"), S("1234567890"));
test(S(), SV("12345678901234567890"), S("12345678901234567890"));
test(S("12345"), SV(), S());
test(S("12345"), SV("12345"), S("12345"));
test(S("12345"), SV("1234567890"), S("1234567890"));
test(S("12345"), SV("12345678901234567890"), S("12345678901234567890"));
test(S("1234567890"), SV(), S());
test(S("1234567890"), SV("12345"), S("12345"));
test(S("1234567890"), SV("1234567890"), S("1234567890"));
test(S("1234567890"), SV("12345678901234567890"), S("12345678901234567890"));
test(S("12345678901234567890"), SV(), S());
test(S("12345678901234567890"), SV("12345"), S("12345"));
test(S("12345678901234567890"), SV("1234567890"), S("1234567890"));
test(S("12345678901234567890"), SV("12345678901234567890"),
S("12345678901234567890"));
testAlloc(S(), SV(), min_allocator<char>());
testAlloc(S(), SV("12345"), min_allocator<char>());
testAlloc(S(), SV("1234567890"), min_allocator<char>());
testAlloc(S(), SV("12345678901234567890"), min_allocator<char>());
}
#endif
}

123
test/std/strings/basic.string/string.modifiers/string_assign/string_view_size_size.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// XFAIL: libcpp-no-exceptions
// <string>
// basic_string<charT,traits,Allocator>&
// assign(basic_string_view<charT,traits> sv, size_type pos, size_type n=npos);
// the =npos was added for C++14
#include <string>
#include <stdexcept>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
template <class S, class SV>
void
test(S s, SV sv, typename S::size_type pos, typename S::size_type n, S expected)
{
try
{
s.assign(sv, pos, n);
LIBCPP_ASSERT(s.__invariants());
assert(pos <= sv.size());
assert(s == expected);
}
catch (std::out_of_range&)
{
assert(pos > sv.size());
}
}
template <class S, class SV>
void
test_npos(S s, SV sv, typename S::size_type pos, S expected)
{
try
{
s.assign(sv, pos);
LIBCPP_ASSERT(s.__invariants());
assert(pos <= sv.size());
assert(s == expected);
}
catch (std::out_of_range&)
{
assert(pos > sv.size());
}
}
int main()
{
{
typedef std::string S;
typedef std::string_view SV;
test(S(), SV(), 0, 0, S());
test(S(), SV(), 1, 0, S());
test(S(), SV("12345"), 0, 3, S("123"));
test(S(), SV("12345"), 1, 4, S("2345"));
test(S(), SV("12345"), 3, 15, S("45"));
test(S(), SV("12345"), 5, 15, S(""));
test(S(), SV("12345"), 6, 15, S("not happening"));
test(S(), SV("12345678901234567890"), 0, 0, S());
test(S(), SV("12345678901234567890"), 1, 1, S("2"));
test(S(), SV("12345678901234567890"), 2, 3, S("345"));
test(S(), SV("12345678901234567890"), 12, 13, S("34567890"));
test(S(), SV("12345678901234567890"), 21, 13, S("not happening"));
test(S("12345"), SV(), 0, 0, S());
test(S("12345"), SV("12345"), 2, 2, S("34"));
test(S("12345"), SV("1234567890"), 0, 100, S("1234567890"));
test(S("12345678901234567890"), SV(), 0, 0, S());
test(S("12345678901234567890"), SV("12345"), 1, 3, S("234"));
test(S("12345678901234567890"), SV("12345678901234567890"), 5, 10,
S("6789012345"));
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string <char, std::char_traits<char>, min_allocator<char>> S;
typedef std::basic_string_view<char, std::char_traits<char> > SV;
test(S(), SV(), 0, 0, S());
test(S(), SV(), 1, 0, S());
test(S(), SV("12345"), 0, 3, S("123"));
test(S(), SV("12345"), 1, 4, S("2345"));
test(S(), SV("12345"), 3, 15, S("45"));
test(S(), SV("12345"), 5, 15, S(""));
test(S(), SV("12345"), 6, 15, S("not happening"));
test(S(), SV("12345678901234567890"), 0, 0, S());
test(S(), SV("12345678901234567890"), 1, 1, S("2"));
test(S(), SV("12345678901234567890"), 2, 3, S("345"));
test(S(), SV("12345678901234567890"), 12, 13, S("34567890"));
test(S(), SV("12345678901234567890"), 21, 13, S("not happening"));
test(S("12345"), SV(), 0, 0, S());
test(S("12345"), SV("12345"), 2, 2, S("34"));
test(S("12345"), SV("1234567890"), 0, 100, S("1234567890"));
test(S("12345678901234567890"), SV(), 0, 0, S());
test(S("12345678901234567890"), SV("12345"), 1, 3, S("234"));
test(S("12345678901234567890"), SV("12345678901234567890"), 5, 10,
S("6789012345"));
}
#endif
{
typedef std::string S;
typedef std::string_view SV;
test_npos(S(), SV(), 0, S());
test_npos(S(), SV(), 1, S());
test_npos(S(), SV("12345"), 0, S("12345"));
test_npos(S(), SV("12345"), 1, S("2345"));
test_npos(S(), SV("12345"), 3, S("45"));
test_npos(S(), SV("12345"), 5, S(""));
test_npos(S(), SV("12345"), 6, S("not happening"));
}
}