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add assignment operator to span

This commit is contained in:
arvidn 2018-12-12 09:28:19 +01:00 committed by Arvid Norberg
parent 35ad3bb499
commit a112c8e67b
2 changed files with 28 additions and 0 deletions
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9
include/libtorrent/span.hpp
View File

@ -108,6 +108,15 @@ namespace aux {
span(Cont const& c) // NOLINT
: m_ptr(c.data()), m_len(static_cast<difference_type>(c.size())) {}
template <typename U, typename
= typename std::enable_if<aux::compatible_type<U, T>::value>::type>
span& operator=(span<U> const& rhs) noexcept
{
m_ptr = rhs.data();
m_len = rhs.size();
return *this;
}
index_type size() const noexcept { return m_len; }
bool empty() const noexcept { return m_len == 0; }
T* data() const noexcept { return m_ptr; }

19
test/test_span.cpp
View File

@ -56,6 +56,25 @@ TORRENT_TEST(span_vector)
TEST_CHECK(a.size() == 4);
}
TORRENT_TEST(span_vector_assignment)
{
std::vector<char> v1 = {1,2,3,4};
span<char> a;
a = v1;
TEST_CHECK(a == f(v1));
TEST_CHECK(a.size() == 4);
}
TORRENT_TEST(span_assignment)
{
char v1[] = {1,2,3,4};
span<char> a2(v1);
span<char> a;
a = a2;
TEST_CHECK(a == f(v1));
TEST_CHECK(a.size() == 4);
}
namespace {
void do_span_temp_vector(span<char const> a)