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
// Throwing bad_any_cast is supported starting in macosx10.13
// XFAIL: with_system_cxx_lib=macosx10.12 && !no-exceptions
// XFAIL: with_system_cxx_lib=macosx10.11 && !no-exceptions
// XFAIL: with_system_cxx_lib=macosx10.10 && !no-exceptions
// XFAIL: with_system_cxx_lib=macosx10.9 && !no-exceptions
// <any>
// any& operator=(any const &);
// Test copy assignment
#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 LHS, class RHS>
void test_copy_assign() {
assert(LHS::count == 0);
assert(RHS::count == 0);
LHS::reset();
RHS::reset();
{
any lhs(LHS(1));
any const rhs(RHS(2));
assert(LHS::count == 1);
assert(RHS::count == 1);
assert(RHS::copied == 0);
lhs = rhs;
assert(RHS::copied == 1);
assert(LHS::count == 0);
assert(RHS::count == 2);
assertContains<RHS>(lhs, 2);
assertContains<RHS>(rhs, 2);
}
assert(LHS::count == 0);
assert(RHS::count == 0);
}
template <class LHS>
void test_copy_assign_empty() {
assert(LHS::count == 0);
LHS::reset();
{
any lhs;
any const rhs(LHS(42));
assert(LHS::count == 1);
assert(LHS::copied == 0);
lhs = rhs;
assert(LHS::copied == 1);
assert(LHS::count == 2);
assertContains<LHS>(lhs, 42);
assertContains<LHS>(rhs, 42);
}
assert(LHS::count == 0);
LHS::reset();
{
any lhs(LHS(1));
any const rhs;
assert(LHS::count == 1);
assert(LHS::copied == 0);
lhs = rhs;
assert(LHS::copied == 0);
assert(LHS::count == 0);
assertEmpty<LHS>(lhs);
assertEmpty(rhs);
}
assert(LHS::count == 0);
}
void test_copy_assign_self() {
// empty
{
any a;
a = (any &)a;
assertEmpty(a);
assert(globalMemCounter.checkOutstandingNewEq(0));
}
assert(globalMemCounter.checkOutstandingNewEq(0));
// small
{
any a((small(1)));
assert(small::count == 1);
a = (any &)a;
assert(small::count == 1);
assertContains<small>(a, 1);
assert(globalMemCounter.checkOutstandingNewEq(0));
}
assert(small::count == 0);
assert(globalMemCounter.checkOutstandingNewEq(0));
// large
{
any a(large(1));
assert(large::count == 1);
a = (any &)a;
assert(large::count == 1);
assertContains<large>(a, 1);
assert(globalMemCounter.checkOutstandingNewEq(1));
}
assert(large::count == 0);
assert(globalMemCounter.checkOutstandingNewEq(0));
}
template <class Tp>
void test_copy_assign_throws()
{
#if !defined(TEST_HAS_NO_EXCEPTIONS)
auto try_throw =
[](any& lhs, any const& rhs) {
try {
lhs = rhs;
assert(false);
} catch (my_any_exception const &) {
// do nothing
} catch (...) {
assert(false);
}
};
// const lvalue to empty
{
any lhs;
any const rhs((Tp(1)));
assert(Tp::count == 1);
try_throw(lhs, rhs);
assert(Tp::count == 1);
assertEmpty<Tp>(lhs);
assertContains<Tp>(rhs, 1);
}
{
any lhs((small(2)));
any const rhs((Tp(1)));
assert(small::count == 1);
assert(Tp::count == 1);
try_throw(lhs, rhs);
assert(small::count == 1);
assert(Tp::count == 1);
assertContains<small>(lhs, 2);
assertContains<Tp>(rhs, 1);
}
{
any lhs((large(2)));
any const rhs((Tp(1)));
assert(large::count == 1);
assert(Tp::count == 1);
try_throw(lhs, rhs);
assert(large::count == 1);
assert(Tp::count == 1);
assertContains<large>(lhs, 2);
assertContains<Tp>(rhs, 1);
}
#endif
}
int main(int, char**) {
globalMemCounter.reset();
test_copy_assign<small1, small2>();
test_copy_assign<large1, large2>();
test_copy_assign<small, large>();
test_copy_assign<large, small>();
test_copy_assign_empty<small>();
test_copy_assign_empty<large>();
test_copy_assign_self();
test_copy_assign_throws<small_throws_on_copy>();
test_copy_assign_throws<large_throws_on_copy>();
return 0;
}