ref: f26c7e3f4f8bcabc0b92fbd042803ef320177b51
dir: /test/utils/InputStream.h/
#ifndef __INPUTSTREAM_H__
#define __INPUTSTREAM_H__
#include <cstddef>
struct InputStream {
  virtual int read (void* ptr, size_t len) = 0;
};
#endif //__INPUTSTREAM_H__