diff options
| author | Stanislaw Halik <sthalik@misaki.pl> | 2022-10-28 18:08:13 +0200 |
|---|---|---|
| committer | Stanislaw Halik <sthalik@misaki.pl> | 2022-10-28 18:08:13 +0200 |
| commit | 7c02d3b8f1e6ec4ee82bdf1220da431b1cd1231e (patch) | |
| tree | eea6effd759fdc9cd81f33b732979854eb226e39 /serialize/binary-reader.inl | |
| parent | fa07c1fd19e7fbd3b2757583708c4691c79025ed (diff) | |
serializer work
Diffstat (limited to 'serialize/binary-reader.inl')
| -rw-r--r-- | serialize/binary-reader.inl | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/serialize/binary-reader.inl b/serialize/binary-reader.inl new file mode 100644 index 00000000..cf935a76 --- /dev/null +++ b/serialize/binary-reader.inl @@ -0,0 +1,87 @@ +#pragma once
+#include "binary-reader.hpp"
+#include "compat/assert.hpp"
+
+namespace floormat::Serialize {
+
+template<string_input_iterator It>
+template<char_sequence Seq>
+constexpr binary_reader<It>::binary_reader(const Seq& seq) noexcept
+ : it{std::begin(seq)}, end{std::end(seq)}
+{}
+
+template<string_input_iterator It>
+constexpr binary_reader<It>::binary_reader(It begin, It end) noexcept :
+ it{begin}, end{end}
+{}
+
+template<string_input_iterator It>
+template<std::floating_point T>
+constexpr value_u binary_reader<It>::read_u() noexcept
+{
+ value_u buf;
+ static_assert(sizeof(T) <= sizeof(buf));
+ fm_assert(std::distance(it, end) >= sizeof(T));
+ num_bytes_read += sizeof(T);
+ for (int i = 0; i < sizeof(T); i++)
+ buf.bytes[i] = *it++;
+ return buf;
+}
+
+template<string_input_iterator It>
+template<typename T>
+T binary_reader<It>::read() noexcept
+{
+ value_u buf = read_u<T>();
+ return *reinterpret_cast<T>(buf.bytes);
+}
+
+template<string_input_iterator It>
+template<std::size_t N>
+constexpr std::array<char, N> binary_reader<It>::read() noexcept
+{
+ std::array<char, N> array;
+ if (std::is_constant_evaluated())
+ array = {};
+ fm_assert(N <= (std::size_t)std::distance(it, end));
+ num_bytes_read += N;
+ for (std::size_t i = 0; i < N; i++)
+ array[i] = *it++;
+ return array;
+}
+
+template<string_input_iterator It>
+constexpr void binary_reader<It>::assert_end() noexcept
+{
+ fm_assert(it == end);
+}
+
+template<string_input_iterator It>
+template<integer T>
+constexpr value_u binary_reader<It>::read_u() noexcept
+{
+ value_u buf;
+ if (std::is_constant_evaluated())
+ for (std::size_t i = 0; i < std::size(buf.bytes); i++)
+ buf.bytes[i] = 0;
+ static_assert(sizeof(T) <= sizeof(buf));
+ fm_assert((std::ptrdiff_t)sizeof(T) <= std::distance(it, end));
+ num_bytes_read += sizeof(T);
+ if constexpr(std::endian::native == std::endian::big)
+ for (int i = sizeof(T) - 1; i >= 0; i--)
+ buf.bytes[i] = *it++;
+ else
+ for (std::size_t i = 0; i < sizeof(T); i++)
+ buf.bytes[i] = *it++;
+ return buf;
+}
+
+template<string_input_iterator It, serializable T>
+binary_reader<It>& operator>>(binary_reader<It>& reader, T& x) noexcept
+{
+ value_u u = reader.template read<T>();
+ x = *reinterpret_cast<T*>(&u.bytes[0]);
+ return reader;
+}
+
+} // namespace floormat::Serialize
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