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#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<serializable T>
constexpr T binary_reader<It>::read() noexcept
{
constexpr std::size_t N = sizeof(T);
fm_assert((std::ptrdiff_t)N <= std::distance(it, end));
num_bytes_read += N;
char buf[N];
for (std::size_t i = 0; i < N; i++)
buf[i] = *it++;
return maybe_byteswap(std::bit_cast<T, decltype(buf)>(buf));
}
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, serializable T>
binary_reader<It>& operator>>(binary_reader<It>& reader, T& x) noexcept
{
x = reader.template read<T>();
return reader;
}
template<string_input_iterator It>
template<std::size_t MAX>
constexpr auto binary_reader<It>::read_asciiz_string() noexcept
{
static_assert(MAX > 0);
struct fixed_string final {
char buf[MAX];
std::size_t len;
};
fixed_string ret;
for (std::size_t i = 0; i < MAX && it != end; i++)
{
const char c = *it++;
ret.buf[i] = c;
if (c == '\0')
{
ret.len = i;
return ret;
}
}
fm_abort("can't find string terminator");
}
} // namespace floormat::Serialize
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