//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11
// UNSUPPORTED: no-localization
// <experimental/iterator>
//
// template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
// class ostream_joiner;
//
// template<typename T>
// ostream_joiner & operator=(const T&)
//
#include <experimental/iterator>
#include <iostream>
#include <sstream>
#include <cassert>
#include "test_macros.h"
#include "test_iterators.h"
struct mutating_delimiter {
mutating_delimiter(char c = ' ') : c_(c) {}
char get () const { return c_++; }
mutable char c_;
};
template<class _CharT, class _Traits>
std::basic_ostream<_CharT, _Traits>&
operator<<(std::basic_ostream<_CharT, _Traits>& os, const mutating_delimiter &d)
{ return os << d.get(); }
struct mutating_delimiter2 { // same as above, w/o the const and the mutable
mutating_delimiter2(char c = ' ') : c_(c) {}
char get () { return c_++; }
char c_;
};
template<class _CharT, class _Traits>
std::basic_ostream<_CharT, _Traits>&
operator<<(std::basic_ostream<_CharT, _Traits>& os, mutating_delimiter2 &d)
{ return os << d.get(); }
namespace exper = std::experimental;
template <class Delim, class Iter, class CharT = char, class Traits = std::char_traits<CharT>>
void test (Delim &&d, Iter first, Iter last, const CharT *expected ) {
typedef exper::ostream_joiner<typename std::decay<Delim>::type, CharT, Traits> Joiner;
static_assert((std::is_copy_constructible<Joiner>::value == std::is_copy_constructible<typename std::decay<Delim>::type>::value), "" );
static_assert((std::is_move_constructible<Joiner>::value == std::is_move_constructible<typename std::decay<Delim>::type>::value), "" );
static_assert((std::is_copy_assignable<Joiner> ::value == std::is_copy_assignable<typename std::decay<Delim>::type> ::value), "" );
static_assert((std::is_move_assignable<Joiner> ::value == std::is_move_assignable<typename std::decay<Delim>::type> ::value), "" );
std::basic_stringstream<CharT, Traits> sstream;
Joiner joiner(sstream, d);
while (first != last)
*joiner++ = *first++;
assert(sstream.str() == expected);
}
int main(int, char**) {
{
const char chars[] = "0123456789";
const int ints [] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 };
test('X', chars, chars+10, "0X1X2X3X4X5X6X7X8X9");
test('x', ints, ints+10, "10x11x12x13x14x15x16x17x18x19");
test('X', cpp17_input_iterator<const char*>(chars), cpp17_input_iterator<const char*>(chars+10), "0X1X2X3X4X5X6X7X8X9");
test('x', cpp17_input_iterator<const int*>(ints), cpp17_input_iterator<const int*>(ints+10), "10x11x12x13x14x15x16x17x18x19");
test('X', forward_iterator<const char*>(chars), forward_iterator<const char*>(chars+10), "0X1X2X3X4X5X6X7X8X9");
test('x', forward_iterator<const int*>(ints), forward_iterator<const int*>(ints+10), "10x11x12x13x14x15x16x17x18x19");
test('X', random_access_iterator<const char*>(chars), random_access_iterator<const char*>(chars+10), "0X1X2X3X4X5X6X7X8X9");
test('x', random_access_iterator<const int*>(ints), random_access_iterator<const int*>(ints+10), "10x11x12x13x14x15x16x17x18x19");
test("Z", chars, chars+10, "0Z1Z2Z3Z4Z5Z6Z7Z8Z9");
test("z", ints, ints+10, "10z11z12z13z14z15z16z17z18z19");
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<char, const char *, wchar_t> ('X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9");
test<char, const int *, wchar_t> ('x', ints, ints+10, L"10x11x12x13x14x15x16x17x18x19");
#endif
// TODO(var-const): uncomment when it becomes possible to instantiate a `basic_ostream` object with a sized
// character type (see https://llvm.org/PR53119).
// test<char, const char *, char16_t>('X', chars, chars+10, u"0X1X2X3X4X5X6X7X8X9");
// test<char, const int *, char16_t>('x', ints, ints+10, u"10x11x12x13x14x15x16x17x18x19");
// test<char, const char *, char32_t>('X', chars, chars+10, U"0X1X2X3X4X5X6X7X8X9");
// test<char, const int *, char32_t>('x', ints, ints+10, U"10x11x12x13x14x15x16x17x18x19");
test(mutating_delimiter(), chars, chars+10, "0 1!2\"3#4$5%6&7'8(9");
test(mutating_delimiter2(), chars, chars+10, "0 1!2\"3#4$5%6&7'8(9");
}
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
{
const wchar_t chars[] = L"0123456789";
const int ints [] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 };
test(L'X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9");
test(L'x', ints, ints+10, L"10x11x12x13x14x15x16x17x18x19");
test(L'X', cpp17_input_iterator<const wchar_t*>(chars), cpp17_input_iterator<const wchar_t*>(chars+10), L"0X1X2X3X4X5X6X7X8X9");
test(L'x', cpp17_input_iterator<const int*>(ints), cpp17_input_iterator<const int*>(ints+10), L"10x11x12x13x14x15x16x17x18x19");
test(L'X', forward_iterator<const wchar_t*>(chars), forward_iterator<const wchar_t*>(chars+10), L"0X1X2X3X4X5X6X7X8X9");
test(L'x', forward_iterator<const int*>(ints), forward_iterator<const int*>(ints+10), L"10x11x12x13x14x15x16x17x18x19");
test(L'X', random_access_iterator<const wchar_t*>(chars), random_access_iterator<const wchar_t*>(chars+10), L"0X1X2X3X4X5X6X7X8X9");
test(L'x', random_access_iterator<const int*>(ints), random_access_iterator<const int*>(ints+10), L"10x11x12x13x14x15x16x17x18x19");
test(L"Z", chars, chars+10, L"0Z1Z2Z3Z4Z5Z6Z7Z8Z9");
test(L"z", ints, ints+10, L"10z11z12z13z14z15z16z17z18z19");
test<char, const wchar_t *, wchar_t> ('X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9");
test<char, const int *, wchar_t> ('x', ints, ints+10, L"10x11x12x13x14x15x16x17x18x19");
test(mutating_delimiter(), chars, chars+10, L"0 1!2\"3#4$5%6&7'8(9");
}
#endif // TEST_HAS_NO_WIDE_CHARACTERS
return 0;
}
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