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Added span to object rep conversions.

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This commit is contained in:
Neil MacIntosh
2016-05-29 17:06:29 -07:00
parent d63c9803da
commit ba8ebef509
4 changed files with 124 additions and 38 deletions
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91
tests/span_tests.cpp
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@@ -921,6 +921,69 @@ SUITE(span_tests)
}
}
TEST(as_bytes)
{
int a[] = {1, 2, 3, 4};
{
span<const int> s = a;
CHECK(s.length() == 4);
span<const byte> bs = as_bytes(s);
CHECK(static_cast<const void*>(bs.data()) == static_cast<const void*>(s.data()));
CHECK(bs.length() == s.length_bytes());
}
{
span<int> s;
auto bs = as_bytes(s);
CHECK(bs.length() == s.length());
CHECK(bs.length() == 0);
CHECK(bs.size_bytes() == 0);
CHECK(static_cast<const void*>(bs.data()) == static_cast<const void*>(s.data()));
CHECK(bs.data() == nullptr);
}
{
span<int> s = a;
auto bs = as_bytes(s);
CHECK(static_cast<const void*>(bs.data()) == static_cast<const void*>(s.data()));
CHECK(bs.length() == s.length_bytes());
}
}
TEST(as_writeable_bytes)
{
int a[] = {1, 2, 3, 4};
{
#ifdef CONFIRM_COMPILATION_ERRORS
// you should not be able to get writeable bytes for const objects
span<const int> s = a;
CHECK(s.length() == 4);
span<const byte> bs = as_writeable_bytes(s);
CHECK(static_cast<void*>(bs.data()) == static_cast<void*>(s.data()));
CHECK(bs.length() == s.length_bytes());
#endif
}
{
span<int> s;
auto bs = as_writeable_bytes(s);
CHECK(bs.length() == s.length());
CHECK(bs.length() == 0);
CHECK(bs.size_bytes() == 0);
CHECK(static_cast<void*>(bs.data()) == static_cast<void*>(s.data()));
CHECK(bs.data() == nullptr);
}
{
span<int> s = a;
auto bs = as_writeable_bytes(s);
CHECK(static_cast<void*>(bs.data()) == static_cast<void*>(s.data()));
CHECK(bs.length() == s.length_bytes());
}
}
#if 0
TEST(fixed_size_conversions)
{
@@ -1018,34 +1081,6 @@ SUITE(span_tests)
CHECK_THROW(f(), fail_fast);
}
TEST(as_writeable_bytes)
{
int a[] = {1, 2, 3, 4};
{
#ifdef CONFIRM_COMPILATION_ERRORS
// you should not be able to get writeable bytes for const objects
span<const int, dynamic_range> av = a;
auto wav = av.as_writeable_bytes();
#endif
}
{
span<int, dynamic_range> av;
auto wav = as_writeable_bytes(av);
CHECK(wav.length() == av.length());
CHECK(wav.length() == 0);
CHECK(wav.size_bytes() == 0);
}
{
span<int, dynamic_range> av = a;
auto wav = as_writeable_bytes(av);
CHECK(wav.data() == (byte*) &a[0]);
CHECK(wav.length() == sizeof(a));
}
}
#endif
}