| //===----------------------------------------------------------------------===// |
| // |
| // 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> |
| |
| // template <class T> |
| // basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17 |
| |
| #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) |
| { |
| if (pos <= sv.size()) |
| { |
| s.assign(sv, pos, n); |
| LIBCPP_ASSERT(s.__invariants()); |
| assert(s == expected); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| else |
| { |
| try |
| { |
| s.assign(sv, pos, n); |
| assert(false); |
| } |
| catch (std::out_of_range&) |
| { |
| assert(pos > sv.size()); |
| } |
| } |
| #endif |
| } |
| |
| template <class S, class SV> |
| void |
| test_npos(S s, SV sv, typename S::size_type pos, S expected) |
| { |
| if (pos <= sv.size()) |
| { |
| s.assign(sv, pos); |
| LIBCPP_ASSERT(s.__invariants()); |
| assert(s == expected); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| else |
| { |
| try |
| { |
| s.assign(sv, pos); |
| assert(false); |
| } |
| catch (std::out_of_range&) |
| { |
| assert(pos > sv.size()); |
| } |
| } |
| #endif |
| } |
| |
| 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")); |
| } |
| |
| { |
| std::string s = "ABCD"; |
| std::string_view sv = "EFGH"; |
| char arr[] = "IJKL"; |
| |
| s.assign("CDEF", 0); // calls assign(const char *, len) |
| assert(s == ""); |
| s.clear(); |
| |
| s.assign("QRST", 0, std::string::npos); // calls assign(string("QRST", pos, len) |
| assert(s == "QRST"); |
| s.clear(); |
| |
| s.assign(sv, 0); // calls assign(T, pos, npos) |
| assert(s == sv); |
| s.clear(); |
| |
| s.assign(sv, 0, std::string::npos); // calls assign(T, pos, npos) |
| assert(s == sv); |
| s.clear(); |
| |
| s.assign(arr, 0); // calls assign(const char *, len) |
| assert(s == ""); |
| s.clear(); |
| |
| s.assign(arr, 0, std::string::npos); // calls assign(string("IJKL"), pos, npos) |
| assert(s == "IJKL"); |
| s.clear(); |
| |
| s.assign(arr, 0); // calls assign(const char *, len) |
| assert(s == ""); |
| s.clear(); |
| } |
| |
| { |
| std::string s = "ABCD"; |
| std::string_view sv = s; |
| s.assign(sv); |
| assert(s == "ABCD"); |
| |
| sv = s; |
| s.assign(sv, 0, std::string::npos); |
| assert(s == "ABCD"); |
| } |
| |
| { |
| std::string s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; |
| std::string_view sv = s; |
| s.assign(sv); |
| assert(s == "ABCDEFGHIJKLMNOPQRSTUVWXYZ"); |
| |
| sv = s; |
| s.assign(sv, 0, std::string::npos); |
| assert(s == "ABCDEFGHIJKLMNOPQRSTUVWXYZ"); |
| } |
| } |