io_bytestream.h

#ifndef SOURCEMETA_CORE_IO_BYTESTREAM_H_
#define SOURCEMETA_CORE_IO_BYTESTREAM_H_
 
#ifndef SOURCEMETA_CORE_IO_EXPORT
#include <sourcemeta/core/io_export.h>
#endif
 
#include <cstddef>          // std::byte
#include <cstdint>          // std::uint8_t
#include <initializer_list> // std::initializer_list
#include <sstream>          // std::istringstream, std::ostringstream
#include <vector>           // std::vector
 
namespace sourcemeta::core {
 
// Exporting individual members rather than the whole class avoids MSVC
// instantiating std::basic_istringstream / std::basic_ostringstream vbase
// destructors inside this DLL, which would otherwise clash at link time with
// consumer translation units that use these iostream types directly
// (LNK2005).
// https://learn.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=msvc-170&redirectedfrom=MSDN
#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable : 4251 4275)
#endif

class InputByteStream : public std::istringstream {
public:
  SOURCEMETA_CORE_IO_EXPORT
  InputByteStream(std::initializer_list<std::uint8_t> bytes);
};

class OutputByteStream : public std::ostringstream {
public:
  SOURCEMETA_CORE_IO_EXPORT
  auto bytes() const -> std::vector<std::byte>;
};
 
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
 
} // namespace sourcemeta::core
 
#endif