1//===- NullFragment.h -----------------------------------------------------===//
2//
3//                     The MCLinker Project
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9#ifndef MCLD_FRAGMENT_NULLFRAGMENT_H
10#define MCLD_FRAGMENT_NULLFRAGMENT_H
11
12#include <mcld/Fragment/Fragment.h>
13
14namespace mcld {
15
16class SectionData;
17
18/** \class NullFragment
19 *  \brief NullFragment is a kind of MCFragment that presents the "end fragment"
20 *         referenced by some special symbols
21 */
22class NullFragment : public Fragment
23{
24public:
25  NullFragment(SectionData* pSD = NULL);
26
27  /// size -
28  size_t size() const { return 0x0; }
29
30  static bool classof(const Fragment *F)
31  { return F->getKind() == Fragment::Null; }
32
33  static bool classof(const NullFragment *)
34  { return true; }
35};
36
37} // namespace of mcld
38
39#endif
40
41