Function copy_assignment

examples/src/pmr_allocator_examples.cpp:99–127

}

void copy_assignment() // assignment
{
    char buffer[1024];
    std::pmr::monotonic_buffer_resource pool{ std::data(buffer), std::size(buffer) };
    std::pmr::polymorphic_allocator<char> alloc(&pool);

    char buffer1[1024];
    std::pmr::monotonic_buffer_resource pool1{ std::data(buffer1), std::size(buffer1) };
    std::pmr::polymorphic_allocator<char> alloc1(&pool1);

    jsoncons::pmr::json j{ "String too long for short string", alloc };
    assert(j.is_string());
    assert(j.get_allocator().resource() == &pool);

    // copy long string to number
    jsoncons::pmr::json j1{10};
    j1 = j;
    assert(j1.is_string());
    assert(j1.get_allocator() == std::allocator_traits<std::pmr::polymorphic_allocator<char>>::
        select_on_container_copy_construction(j.get_allocator()));
    assert(j1.get_allocator() == std::pmr::polymorphic_allocator<char>{});

    // copy long string to array
    jsoncons::pmr::json j2{ jsoncons::json_array_arg, {1,2,3,4}, 
        jsoncons::semantic_tag::none, alloc1};
    j2 = j;
    assert(j2.is_string());
    assert(j2.get_allocator().resource() == &pool1);
}

void move_assignment() // assignment
{