ref: b9de87ea5dd00c691d9c7a56d2d5bd63afe734d2
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__