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linux-packaging-mono/external/llvm-project/lldb/source/Plugins/SymbolFile/DWARF/DWARFDeclContext.cpp

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//===-- DWARFDeclContext.cpp ------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DWARFDeclContext.h"
const char *DWARFDeclContext::GetQualifiedName() const {
if (m_qualified_name.empty()) {
// The declaration context array for a class named "foo" in namespace
// "a::b::c" will be something like:
// [0] DW_TAG_class_type "foo"
// [1] DW_TAG_namespace "c"
// [2] DW_TAG_namespace "b"
// [3] DW_TAG_namespace "a"
if (!m_entries.empty()) {
if (m_entries.size() == 1) {
if (m_entries[0].name) {
m_qualified_name.append("::");
m_qualified_name.append(m_entries[0].name);
}
} else {
collection::const_reverse_iterator pos;
collection::const_reverse_iterator begin = m_entries.rbegin();
collection::const_reverse_iterator end = m_entries.rend();
for (pos = begin; pos != end; ++pos) {
if (pos != begin)
m_qualified_name.append("::");
if (pos->name == NULL) {
if (pos->tag == DW_TAG_namespace)
m_qualified_name.append("(anonymous namespace)");
else if (pos->tag == DW_TAG_class_type)
m_qualified_name.append("(anonymous class)");
else if (pos->tag == DW_TAG_structure_type)
m_qualified_name.append("(anonymous struct)");
else if (pos->tag == DW_TAG_union_type)
m_qualified_name.append("(anonymous union)");
else
m_qualified_name.append("(anonymous)");
} else
m_qualified_name.append(pos->name);
}
}
}
}
if (m_qualified_name.empty())
return NULL;
return m_qualified_name.c_str();
}
bool DWARFDeclContext::operator==(const DWARFDeclContext &rhs) const {
if (m_entries.size() != rhs.m_entries.size())
return false;
collection::const_iterator pos;
collection::const_iterator begin = m_entries.begin();
collection::const_iterator end = m_entries.end();
collection::const_iterator rhs_pos;
collection::const_iterator rhs_begin = rhs.m_entries.begin();
// The two entry arrays have the same size
// First compare the tags before we do expensive name compares
for (pos = begin, rhs_pos = rhs_begin; pos != end; ++pos, ++rhs_pos) {
if (pos->tag != rhs_pos->tag) {
// Check for DW_TAG_structure_type and DW_TAG_class_type as they are often
// used interchangeably in GCC
if (pos->tag == DW_TAG_structure_type &&
rhs_pos->tag == DW_TAG_class_type)
continue;
if (pos->tag == DW_TAG_class_type &&
rhs_pos->tag == DW_TAG_structure_type)
continue;
return false;
}
}
// The tags all match, now compare the names
for (pos = begin, rhs_pos = rhs_begin; pos != end; ++pos, ++rhs_pos) {
if (!pos->NameMatches(*rhs_pos))
return false;
}
// All tags and names match
return true;
}