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DWARFDeclContext.cpp
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1//===-- DWARFDeclContext.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 "DWARFDeclContext.h"
10
11using namespace lldb_private::dwarf;
12
14 if (m_qualified_name.empty()) {
15 // The declaration context array for a class named "foo" in namespace
16 // "a::b::c" will be something like:
17 // [0] DW_TAG_class_type "foo"
18 // [1] DW_TAG_namespace "c"
19 // [2] DW_TAG_namespace "b"
20 // [3] DW_TAG_namespace "a"
21 if (!m_entries.empty()) {
22 if (m_entries.size() == 1) {
23 if (m_entries[0].name) {
24 m_qualified_name.append("::");
25 m_qualified_name.append(m_entries[0].name);
26 }
27 } else {
28 collection::const_reverse_iterator pos;
29 collection::const_reverse_iterator begin = m_entries.rbegin();
30 collection::const_reverse_iterator end = m_entries.rend();
31 for (pos = begin; pos != end; ++pos) {
32 if (pos != begin)
33 m_qualified_name.append("::");
34 if (pos->name == nullptr) {
35 if (pos->tag == DW_TAG_namespace)
36 m_qualified_name.append("(anonymous namespace)");
37 else if (pos->tag == DW_TAG_class_type)
38 m_qualified_name.append("(anonymous class)");
39 else if (pos->tag == DW_TAG_structure_type)
40 m_qualified_name.append("(anonymous struct)");
41 else if (pos->tag == DW_TAG_union_type)
42 m_qualified_name.append("(anonymous union)");
43 else
44 m_qualified_name.append("(anonymous)");
45 } else
46 m_qualified_name.append(pos->name);
47 }
48 }
49 }
50 }
51 if (m_qualified_name.empty())
52 return nullptr;
53 return m_qualified_name.c_str();
54}
55
57 if (m_entries.size() != rhs.m_entries.size())
58 return false;
59
60 collection::const_iterator pos;
61 collection::const_iterator begin = m_entries.begin();
62 collection::const_iterator end = m_entries.end();
63
64 collection::const_iterator rhs_pos;
65 collection::const_iterator rhs_begin = rhs.m_entries.begin();
66 // The two entry arrays have the same size
67
68 // First compare the tags before we do expensive name compares
69 for (pos = begin, rhs_pos = rhs_begin; pos != end; ++pos, ++rhs_pos) {
70 if (pos->tag != rhs_pos->tag) {
71 // Check for DW_TAG_structure_type and DW_TAG_class_type as they are
72 // often used interchangeably in GCC
73 if (pos->tag == DW_TAG_structure_type &&
74 rhs_pos->tag == DW_TAG_class_type)
75 continue;
76 if (pos->tag == DW_TAG_class_type &&
77 rhs_pos->tag == DW_TAG_structure_type)
78 continue;
79 return false;
80 }
81 }
82 // The tags all match, now compare the names
83 for (pos = begin, rhs_pos = rhs_begin; pos != end; ++pos, ++rhs_pos) {
84 if (!pos->NameMatches(*rhs_pos))
85 return false;
86 }
87 // All tags and names match
88 return true;
89}
const char * GetQualifiedName() const
collection m_entries
bool operator==(const DWARFDeclContext &rhs) const
std::string m_qualified_name