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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// REQUIRES: can-create-symlinks
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: no-filesystem
// UNSUPPORTED: availability-filesystem-missing
// <filesystem>
// class recursive_directory_iterator
// bool recursion_pending() const;
#include <filesystem>
#include <type_traits>
#include <set>
#include <cassert>
#include "test_macros.h"
#include "filesystem_test_helper.h"
namespace fs = std::filesystem;
using namespace fs;
static void initial_value_test()
{
static_test_env static_env;
recursive_directory_iterator it(static_env.Dir);
assert(it.recursion_pending() == true);
}
static void value_after_copy_construction_and_assignment_test()
{
static_test_env static_env;
recursive_directory_iterator rec_pending_it(static_env.Dir);
recursive_directory_iterator no_rec_pending_it(static_env.Dir);
no_rec_pending_it.disable_recursion_pending();
{ // copy construction
recursive_directory_iterator it(rec_pending_it);
assert(it.recursion_pending() == true);
it.disable_recursion_pending();
assert(rec_pending_it.recursion_pending() == true);
recursive_directory_iterator it2(no_rec_pending_it);
assert(it2.recursion_pending() == false);
}
{ // copy assignment
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
it = rec_pending_it;
assert(it.recursion_pending() == true);
it.disable_recursion_pending();
assert(rec_pending_it.recursion_pending() == true);
recursive_directory_iterator it2(static_env.Dir);
it2 = no_rec_pending_it;
assert(it2.recursion_pending() == false);
}
assert(rec_pending_it.recursion_pending() == true);
assert(no_rec_pending_it.recursion_pending() == false);
}
static void value_after_move_construction_and_assignment_test()
{
static_test_env static_env;
recursive_directory_iterator rec_pending_it(static_env.Dir);
recursive_directory_iterator no_rec_pending_it(static_env.Dir);
no_rec_pending_it.disable_recursion_pending();
{ // move construction
recursive_directory_iterator it_cp(rec_pending_it);
recursive_directory_iterator it(std::move(it_cp));
assert(it.recursion_pending() == true);
recursive_directory_iterator it_cp2(no_rec_pending_it);
recursive_directory_iterator it2(std::move(it_cp2));
assert(it2.recursion_pending() == false);
}
{ // copy assignment
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
recursive_directory_iterator it_cp(rec_pending_it);
it = std::move(it_cp);
assert(it.recursion_pending() == true);
recursive_directory_iterator it2(static_env.Dir);
recursive_directory_iterator it_cp2(no_rec_pending_it);
it2 = std::move(it_cp2);
assert(it2.recursion_pending() == false);
}
assert(rec_pending_it.recursion_pending() == true);
assert(no_rec_pending_it.recursion_pending() == false);
}
static void increment_resets_value()
{
static_test_env static_env;
const recursive_directory_iterator endIt;
{
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
assert(it.recursion_pending() == false);
++it;
assert(it.recursion_pending() == true);
assert(it.depth() == 0);
}
{
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
assert(it.recursion_pending() == false);
it++;
assert(it.recursion_pending() == true);
assert(it.depth() == 0);
}
{
recursive_directory_iterator it(static_env.Dir);
it.disable_recursion_pending();
assert(it.recursion_pending() == false);
std::error_code ec;
it.increment(ec);
assert(it.recursion_pending() == true);
assert(it.depth() == 0);
}
}
static void pop_does_not_reset_value()
{
static_test_env static_env;
const recursive_directory_iterator endIt;
auto& DE0 = static_env.DirIterationList;
std::set<path> notSeenDepth0(DE0.begin(), DE0.end());
recursive_directory_iterator it(static_env.Dir);
assert(it != endIt);
while (it.depth() == 0) {
notSeenDepth0.erase(it->path());
++it;
assert(it != endIt);
}
assert(it.depth() == 1);
it.disable_recursion_pending();
it.pop();
// Since the order of iteration is unspecified the pop() could result
// in the end iterator. When this is the case it is undefined behavior
// to call recursion_pending().
if (it == endIt) {
assert(notSeenDepth0.empty());
#if defined(_LIBCPP_VERSION)
assert(it.recursion_pending() == false);
#endif
} else {
assert(! notSeenDepth0.empty());
assert(it.recursion_pending() == false);
}
}
int main(int, char**) {
initial_value_test();
value_after_copy_construction_and_assignment_test();
value_after_move_construction_and_assignment_test();
increment_resets_value();
pop_does_not_reset_value();
return 0;
}
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