io_buf.hpp

Go to the documentation of this file.

 
#ifndef IO_BUF_HPP_INCLUDED
#define IO_BUF_HPP_INCLUDED
 
#include <cstddef> // std::size_t, std::byte
#include <numeric> // std::accumulate
#include <vector>
 
#include "buffer/shared_buffer.hpp"
#include "utility/byte_array.hpp"
 
 
namespace chops {
namespace test {
 
constexpr int Answer = 42;
 
struct io_buf_and_int {
  chops::const_shared_buffer  m_buf;
  int                         m_num;
 
  io_buf_and_int (const chops::const_shared_buffer& buf) : m_buf(buf), m_num(Answer) { }
 
  std::size_t size() const noexcept { return m_buf.size(); }
 
};
 
auto make_io_buf1() {
  auto ba = chops::make_byte_array(0x20, 0x21, 0x22, 0x23, 0x24);
  return chops::const_shared_buffer(ba.data(), ba.size());
}
 
auto make_io_buf2() {
  auto ba = chops::make_byte_array(0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46);
  return chops::const_shared_buffer(ba.data(), ba.size());
}
 
auto make_io_buf_vec() {
  return std::vector<chops::const_shared_buffer> { make_io_buf1(), make_io_buf2() };
}
 
auto make_io_buf_and_int_vec() {
  return std::vector<io_buf_and_int> { io_buf_and_int(make_io_buf1()), io_buf_and_int(make_io_buf2()) };
}
 
template <typename E>
std::size_t accum_io_buf_size (const std::vector<E>& data_vec) {
  return std::accumulate (data_vec.cbegin(), data_vec.cend(), static_cast<std::size_t>(0u),
    [] (std::size_t sum, const E& elem) { return sum += elem.size(); } );
}
 
 
} // end namespace test
} // end namespace chops
 
#endif