copy.pass.cpp
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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// XFAIL: dylib-has-no-bad_any_cast && !no-exceptions
// <any>
// any(any const &);
#include <any>
#include <cassert>
#include "any_helpers.h"
#include "count_new.h"
#include "test_macros.h"
using std::any;
using std::any_cast;
template <class Type>
void test_copy_throws() {
#if !defined(TEST_HAS_NO_EXCEPTIONS)
assert(Type::count == 0);
{
any const a((Type(42)));
assert(Type::count == 1);
try {
any const a2(a);
assert(false);
} catch (my_any_exception const &) {
// do nothing
} catch (...) {
assert(false);
}
assert(Type::count == 1);
assertContains<Type>(a, 42);
}
assert(Type::count == 0);
#endif
}
void test_copy_empty() {
DisableAllocationGuard g; ((void)g); // No allocations should occur.
any a1;
any a2(a1);
assertEmpty(a1);
assertEmpty(a2);
}
template <class Type>
void test_copy()
{
// Copying small types should not perform any allocations.
DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
assert(Type::count == 0);
Type::reset();
{
any a((Type(42)));
assert(Type::count == 1);
assert(Type::copied == 0);
any a2(a);
assert(Type::copied == 1);
assert(Type::count == 2);
assertContains<Type>(a, 42);
assertContains<Type>(a2, 42);
// Modify a and check that a2 is unchanged
modifyValue<Type>(a, -1);
assertContains<Type>(a, -1);
assertContains<Type>(a2, 42);
// modify a2 and check that a is unchanged
modifyValue<Type>(a2, 999);
assertContains<Type>(a, -1);
assertContains<Type>(a2, 999);
// clear a and check that a2 is unchanged
a.reset();
assertEmpty(a);
assertContains<Type>(a2, 999);
}
assert(Type::count == 0);
}
int main(int, char**) {
test_copy<small>();
test_copy<large>();
test_copy_empty();
test_copy_throws<small_throws_on_copy>();
test_copy_throws<large_throws_on_copy>();
return 0;
}