//===----------------------------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // template // iterator insert(const_iterator p, InputIterator first, InputIterator last); // constexpr since C++20 #include #include #include "test_macros.h" #include "test_iterators.h" #include "min_allocator.h" template TEST_CONSTEXPR_CXX20 void test(S s, typename S::difference_type pos, It first, It last, S expected) { typename S::const_iterator p = s.cbegin() + pos; typename S::iterator i = s.insert(p, first, last); LIBCPP_ASSERT(s.__invariants()); assert(i - s.begin() == pos); assert(s == expected); } #ifndef TEST_HAS_NO_EXCEPTIONS struct Widget { operator char() const { throw 42; } }; template TEST_CONSTEXPR_CXX20 void test_exceptions(S s, typename S::difference_type pos, It first, It last) { typename S::const_iterator p = s.cbegin() + pos; S original = s; typename S::iterator begin = s.begin(); typename S::iterator end = s.end(); try { s.insert(p, first, last); assert(false); } catch (...) {} // Part of "no effects" is that iterators and pointers // into the string must not have been invalidated. LIBCPP_ASSERT(s.__invariants()); assert(s == original); assert(s.begin() == begin); assert(s.end() == end); } #endif TEST_CONSTEXPR_CXX20 bool test() { { typedef std::string S; const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; test(S(), 0, s, s, S()); test(S(), 0, s, s+1, S("A")); test(S(), 0, s, s+10, S("ABCDEFGHIJ")); test(S(), 0, s, s+52, S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S("12345"), 0, s, s, S("12345")); test(S("12345"), 1, s, s+1, S("1A2345")); test(S("12345"), 4, s, s+10, S("1234ABCDEFGHIJ5")); test(S("12345"), 5, s, s+52, S("12345ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S("1234567890"), 0, s, s, S("1234567890")); test(S("1234567890"), 1, s, s+1, S("1A234567890")); test(S("1234567890"), 10, s, s+10, S("1234567890ABCDEFGHIJ")); test(S("1234567890"), 8, s, s+52, S("12345678ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz90")); test(S("12345678901234567890"), 3, s, s, S("12345678901234567890")); test(S("12345678901234567890"), 3, s, s+1, S("123A45678901234567890")); test(S("12345678901234567890"), 15, s, s+10, S("123456789012345ABCDEFGHIJ67890")); test(S("12345678901234567890"), 20, s, s+52, S("12345678901234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S(), 0, cpp17_input_iterator(s), cpp17_input_iterator(s), S()); test(S(), 0, cpp17_input_iterator(s), cpp17_input_iterator(s+1), S("A")); test(S(), 0, cpp17_input_iterator(s), cpp17_input_iterator(s+10), S("ABCDEFGHIJ")); test(S(), 0, cpp17_input_iterator(s), cpp17_input_iterator(s+52), S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S("12345"), 0, cpp17_input_iterator(s), cpp17_input_iterator(s), S("12345")); test(S("12345"), 1, cpp17_input_iterator(s), cpp17_input_iterator(s+1), S("1A2345")); test(S("12345"), 4, cpp17_input_iterator(s), cpp17_input_iterator(s+10), S("1234ABCDEFGHIJ5")); test(S("12345"), 5, cpp17_input_iterator(s), cpp17_input_iterator(s+52), S("12345ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S("1234567890"), 0, cpp17_input_iterator(s), cpp17_input_iterator(s), S("1234567890")); test(S("1234567890"), 1, cpp17_input_iterator(s), cpp17_input_iterator(s+1), S("1A234567890")); test(S("1234567890"), 10, cpp17_input_iterator(s), cpp17_input_iterator(s+10), S("1234567890ABCDEFGHIJ")); test(S("1234567890"), 8, cpp17_input_iterator(s), cpp17_input_iterator(s+52), S("12345678ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz90")); test(S("12345678901234567890"), 3, cpp17_input_iterator(s), cpp17_input_iterator(s), S("12345678901234567890")); test(S("12345678901234567890"), 3, cpp17_input_iterator(s), cpp17_input_iterator(s+1), S("123A45678901234567890")); test(S("12345678901234567890"), 15, cpp17_input_iterator(s), cpp17_input_iterator(s+10), S("123456789012345ABCDEFGHIJ67890")); test(S("12345678901234567890"), 20, cpp17_input_iterator(s), cpp17_input_iterator(s+52), S("12345678901234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); } #if TEST_STD_VER >= 11 { typedef std::basic_string, min_allocator> S; const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; test(S(), 0, s, s, S()); test(S(), 0, s, s+1, S("A")); test(S(), 0, s, s+10, S("ABCDEFGHIJ")); test(S(), 0, s, s+52, S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S("12345"), 0, s, s, S("12345")); test(S("12345"), 1, s, s+1, S("1A2345")); test(S("12345"), 4, s, s+10, S("1234ABCDEFGHIJ5")); test(S("12345"), 5, s, s+52, S("12345ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S("1234567890"), 0, s, s, S("1234567890")); test(S("1234567890"), 1, s, s+1, S("1A234567890")); test(S("1234567890"), 10, s, s+10, S("1234567890ABCDEFGHIJ")); test(S("1234567890"), 8, s, s+52, S("12345678ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz90")); test(S("12345678901234567890"), 3, s, s, S("12345678901234567890")); test(S("12345678901234567890"), 3, s, s+1, S("123A45678901234567890")); test(S("12345678901234567890"), 15, s, s+10, S("123456789012345ABCDEFGHIJ67890")); test(S("12345678901234567890"), 20, s, s+52, S("12345678901234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S(), 0, cpp17_input_iterator(s), cpp17_input_iterator(s), S()); test(S(), 0, cpp17_input_iterator(s), cpp17_input_iterator(s+1), S("A")); test(S(), 0, cpp17_input_iterator(s), cpp17_input_iterator(s+10), S("ABCDEFGHIJ")); test(S(), 0, cpp17_input_iterator(s), cpp17_input_iterator(s+52), S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S("12345"), 0, cpp17_input_iterator(s), cpp17_input_iterator(s), S("12345")); test(S("12345"), 1, cpp17_input_iterator(s), cpp17_input_iterator(s+1), S("1A2345")); test(S("12345"), 4, cpp17_input_iterator(s), cpp17_input_iterator(s+10), S("1234ABCDEFGHIJ5")); test(S("12345"), 5, cpp17_input_iterator(s), cpp17_input_iterator(s+52), S("12345ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); test(S("1234567890"), 0, cpp17_input_iterator(s), cpp17_input_iterator(s), S("1234567890")); test(S("1234567890"), 1, cpp17_input_iterator(s), cpp17_input_iterator(s+1), S("1A234567890")); test(S("1234567890"), 10, cpp17_input_iterator(s), cpp17_input_iterator(s+10), S("1234567890ABCDEFGHIJ")); test(S("1234567890"), 8, cpp17_input_iterator(s), cpp17_input_iterator(s+52), S("12345678ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz90")); test(S("12345678901234567890"), 3, cpp17_input_iterator(s), cpp17_input_iterator(s), S("12345678901234567890")); test(S("12345678901234567890"), 3, cpp17_input_iterator(s), cpp17_input_iterator(s+1), S("123A45678901234567890")); test(S("12345678901234567890"), 15, cpp17_input_iterator(s), cpp17_input_iterator(s+10), S("123456789012345ABCDEFGHIJ67890")); test(S("12345678901234567890"), 20, cpp17_input_iterator(s), cpp17_input_iterator(s+52), S("12345678901234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")); } #endif #ifndef TEST_HAS_NO_EXCEPTIONS if (!TEST_IS_CONSTANT_EVALUATED) { // test iterator operations that throw typedef std::string S; typedef ThrowingIterator TIter; typedef cpp17_input_iterator IIter; const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; test_exceptions(S(), 0, IIter(TIter(s, s+10, 4, TIter::TAIncrement)), IIter(TIter())); test_exceptions(S(), 0, IIter(TIter(s, s+10, 5, TIter::TADereference)), IIter(TIter())); test_exceptions(S(), 0, IIter(TIter(s, s+10, 6, TIter::TAComparison)), IIter(TIter())); test_exceptions(S(), 0, TIter(s, s+10, 4, TIter::TAIncrement), TIter()); test_exceptions(S(), 0, TIter(s, s+10, 5, TIter::TADereference), TIter()); test_exceptions(S(), 0, TIter(s, s+10, 6, TIter::TAComparison), TIter()); Widget w[100]; test_exceptions(S(), 0, w, w+100); } #endif { // test inserting into self typedef std::string S; S s_short = "123/"; S s_long = "Lorem ipsum dolor sit amet, consectetur/"; s_short.insert(s_short.begin(), s_short.begin(), s_short.end()); assert(s_short == "123/123/"); s_short.insert(s_short.begin(), s_short.begin(), s_short.end()); assert(s_short == "123/123/123/123/"); s_short.insert(s_short.begin(), s_short.begin(), s_short.end()); assert(s_short == "123/123/123/123/123/123/123/123/"); s_long.insert(s_long.begin(), s_long.begin(), s_long.end()); assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/"); } { // test assigning a different type typedef std::string S; const uint8_t p[] = "ABCD"; S s; s.insert(s.begin(), p, p + 4); assert(s == "ABCD"); } if (!TEST_IS_CONSTANT_EVALUATED) { // regression-test inserting into self in sneaky ways std::string s_short = "hello"; std::string s_long = "Lorem ipsum dolor sit amet, consectetur/"; std::string s_othertype = "hello"; const unsigned char *first = reinterpret_cast(s_othertype.data()); test(s_short, 0, s_short.data() + s_short.size(), s_short.data() + s_short.size() + 1, std::string("\0hello", 6)); test(s_long, 0, s_long.data() + s_long.size(), s_long.data() + s_long.size() + 1, std::string("\0Lorem ipsum dolor sit amet, consectetur/", 41)); test(s_othertype, 1, first + 2, first + 5, std::string("hlloello")); } { // test with a move iterator that returns char&& typedef cpp17_input_iterator It; typedef std::move_iterator MoveIt; const char p[] = "ABCD"; std::string s; s.insert(s.begin(), MoveIt(It(std::begin(p))), MoveIt(It(std::end(p) - 1))); assert(s == "ABCD"); } { // test with a move iterator that returns char&& typedef forward_iterator It; typedef std::move_iterator MoveIt; const char p[] = "ABCD"; std::string s; s.insert(s.begin(), MoveIt(It(std::begin(p))), MoveIt(It(std::end(p) - 1))); assert(s == "ABCD"); } { // test with a move iterator that returns char&& typedef const char* It; typedef std::move_iterator MoveIt; const char p[] = "ABCD"; std::string s; s.insert(s.begin(), MoveIt(It(std::begin(p))), MoveIt(It(std::end(p) - 1))); assert(s == "ABCD"); } return true; } int main(int, char**) { test(); #if TEST_STD_VER > 17 static_assert(test()); #endif return 0; }