DIERef.h revision 309124 
1//===-- DIERef.h ------------------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef SymbolFileDWARF_DIERef_h_
11#define SymbolFileDWARF_DIERef_h_
12
13#include "lldb/Core/dwarf.h"
14#include "lldb/lldb-defines.h"
15
16class DWARFFormValue;
17class SymbolFileDWARF;
18
19struct DIERef
20{
21    DIERef();
22
23    DIERef(dw_offset_t c, dw_offset_t d);
24
25    //----------------------------------------------------------------------
26    // In order to properly decode a lldb::user_id_t back into a DIERef we
27    // need the DWARF file since it knows if DWARF in .o files is being used
28    // (MacOSX) or if DWO files are being used. The encoding of the user ID
29    // differs between the two types of DWARF.
30    //----------------------------------------------------------------------
31    explicit
32    DIERef(lldb::user_id_t uid, SymbolFileDWARF *dwarf);
33
34    explicit
35    DIERef(const DWARFFormValue& form_value);
36
37    //----------------------------------------------------------------------
38    // In order to properly encode a DIERef unto a lldb::user_id_t we need
39    // the DWARF file since it knows if DWARF in .o files is being used
40    // (MacOSX) or if DWO files are being used. The encoding of the user ID
41    // differs between the two types of DWARF.
42    //----------------------------------------------------------------------
43    lldb::user_id_t
44    GetUID(SymbolFileDWARF *dwarf) const;
45
46    bool
47    operator< (const DIERef &ref) const
48    {
49        return die_offset < ref.die_offset;
50    }
51
52    bool
53    operator< (const DIERef &ref)
54    {
55        return die_offset < ref.die_offset;
56    }
57
58    dw_offset_t cu_offset;
59    dw_offset_t die_offset;
60};
61
62typedef std::vector<DIERef> DIEArray;
63
64#endif  // SymbolFileDWARF_DIERef_h_
65