ADOLC::detail::InfoType Concept Reference

Concept describing the required interface of a tape Info adapter. More...

#include <infotype.h>

Concept definition

template<class T, class BufferContext, class ErrorType>
concept ADOLC::detail::InfoType = 
    requires(BufferContext &context, const BufferContext &constContext,
             size_t blockSize) {
      typename T::value_type;
      requires BufferStateType<InfoBufferType<T, BufferContext>,
                               typename T::value_type>;
 
      { T::fileIndex } -> std::convertible_to<size_t>;
      { T::num } -> std::same_as<const typename BufferContext::StatEntries &>;
      { T::error } -> std::convertible_to<ErrorType>;
      { T::chunkSize } -> std::convertible_to<size_t>;
      { T::removeExistingBeforeWrite } -> std::convertible_to<bool>;
      { T::openWriteMode } -> std::convertible_to<const char *>;
 
      {
        T::getBuffer(context)
      } -> std::same_as<InfoBufferType<T, BufferContext> &>;
      {
        T::getBuffer(constContext)
      } -> std::same_as<const InfoBufferType<T, BufferContext> &>;
 
      T::ensureReverseReadable(context, blockSize);
      {
        T::reverseSeekOffset(constContext, blockSize)
      } -> std::convertible_to<long>;
      T::updateBufferStatsForward(context, blockSize);
      T::updateBufferStatsReverse(context, blockSize);
      T::updateBufferPositionForward(context);
      T::updateBufferPositionReverse(context, blockSize);
      T::prepareForwardPosition(context, blockSize);
    }

Detailed Description

Concept describing the required interface of a tape Info adapter.

Template Parameters

T	The adapter type (e.g. OpInfo<Context, EType>).
BufferContext	The context type that stores buffers, counters, file handles, etc.
ErrorType	The error enum/type used by higher-level code.