1//===-- DWARFBaseDIE.cpp --------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "DWARFBaseDIE.h"
10
11#include "DWARFUnit.h"
12#include "DWARFDebugInfoEntry.h"
13#include "SymbolFileDWARF.h"
14
15#include "lldb/Core/Module.h"
16#include "lldb/Symbol/ObjectFile.h"
17#include "lldb/Utility/Log.h"
18#include <optional>
19
20using namespace lldb_private;
21using namespace lldb_private::plugin::dwarf;
22
23std::optional<DIERef> DWARFBaseDIE::GetDIERef() const {
24 if (!IsValid())
25 return std::nullopt;
26
27 return DIERef(m_cu->GetSymbolFileDWARF().GetFileIndex(),
28 m_cu->GetDebugSection(), m_die->GetOffset());
29}
30
31dw_tag_t DWARFBaseDIE::Tag() const {
32 if (m_die)
33 return m_die->Tag();
34 else
35 return llvm::dwarf::DW_TAG_null;
36}
37
38const char *DWARFBaseDIE::GetTagAsCString() const {
39 return DW_TAG_value_to_name(val: Tag());
40}
41
42const char *DWARFBaseDIE::GetAttributeValueAsString(const dw_attr_t attr,
43 const char *fail_value) const {
44 if (IsValid())
45 return m_die->GetAttributeValueAsString(cu: GetCU(), attr, fail_value);
46 else
47 return fail_value;
48}
49
50uint64_t DWARFBaseDIE::GetAttributeValueAsUnsigned(const dw_attr_t attr,
51 uint64_t fail_value) const {
52 if (IsValid())
53 return m_die->GetAttributeValueAsUnsigned(cu: GetCU(), attr, fail_value);
54 else
55 return fail_value;
56}
57
58std::optional<uint64_t>
59DWARFBaseDIE::GetAttributeValueAsOptionalUnsigned(const dw_attr_t attr) const {
60 if (IsValid())
61 return m_die->GetAttributeValueAsOptionalUnsigned(cu: GetCU(), attr);
62 return std::nullopt;
63}
64
65uint64_t DWARFBaseDIE::GetAttributeValueAsAddress(const dw_attr_t attr,
66 uint64_t fail_value) const {
67 if (IsValid())
68 return m_die->GetAttributeValueAsAddress(cu: GetCU(), attr, fail_value);
69 else
70 return fail_value;
71}
72
73lldb::user_id_t DWARFBaseDIE::GetID() const {
74 const std::optional<DIERef> &ref = this->GetDIERef();
75 if (ref)
76 return ref->get_id();
77
78 return LLDB_INVALID_UID;
79}
80
81const char *DWARFBaseDIE::GetName() const {
82 if (IsValid())
83 return m_die->GetName(cu: m_cu);
84 else
85 return nullptr;
86}
87
88lldb::ModuleSP DWARFBaseDIE::GetModule() const {
89 SymbolFileDWARF *dwarf = GetDWARF();
90 if (dwarf)
91 return dwarf->GetObjectFile()->GetModule();
92 else
93 return lldb::ModuleSP();
94}
95
96dw_offset_t DWARFBaseDIE::GetOffset() const {
97 if (IsValid())
98 return m_die->GetOffset();
99 else
100 return DW_INVALID_OFFSET;
101}
102
103SymbolFileDWARF *DWARFBaseDIE::GetDWARF() const {
104 if (m_cu)
105 return &m_cu->GetSymbolFileDWARF();
106 else
107 return nullptr;
108}
109
110bool DWARFBaseDIE::HasChildren() const {
111 return m_die && m_die->HasChildren();
112}
113
114bool DWARFBaseDIE::Supports_DW_AT_APPLE_objc_complete_type() const {
115 return IsValid() && GetDWARF()->Supports_DW_AT_APPLE_objc_complete_type(cu: m_cu);
116}
117
118DWARFAttributes DWARFBaseDIE::GetAttributes(Recurse recurse) const {
119 if (IsValid())
120 return m_die->GetAttributes(cu: m_cu, recurse);
121 return DWARFAttributes();
122}
123
124namespace lldb_private::plugin {
125namespace dwarf {
126bool operator==(const DWARFBaseDIE &lhs, const DWARFBaseDIE &rhs) {
127 return lhs.GetDIE() == rhs.GetDIE() && lhs.GetCU() == rhs.GetCU();
128}
129
130bool operator!=(const DWARFBaseDIE &lhs, const DWARFBaseDIE &rhs) {
131 return !(lhs == rhs);
132}
133} // namespace dwarf
134} // namespace lldb_private::plugin
135
136const DWARFDataExtractor &DWARFBaseDIE::GetData() const {
137 // Clients must check if this DIE is valid before calling this function.
138 assert(IsValid());
139 return m_cu->GetData();
140}
141

source code of lldb/source/Plugins/SymbolFile/DWARF/DWARFBaseDIE.cpp