7fa72881d4
Currently dw_tag_t is a typedef for uint16_t. This patch changes makes dw_tag_t a typedef for llvm::dwarf::Tag. This enables us to use the full power of the DWARF utilities in LLVM without having to do the cast every time. With this approach, we only have to do the cast when reading the ULEB value. Differential revision: https://reviews.llvm.org/D68005 llvm-svn: 372891
89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
//===-- DWARFDeclContext.h --------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef SymbolFileDWARF_DWARFDeclContext_h_
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#define SymbolFileDWARF_DWARFDeclContext_h_
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#include <string>
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#include <vector>
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#include "lldb/Utility/ConstString.h"
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#include "DWARFDefines.h"
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// DWARFDeclContext
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//
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// A class that represents a declaration context all the way down to a
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// DIE. This is useful when trying to find a DIE in one DWARF to a DIE
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// in another DWARF file.
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class DWARFDeclContext {
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public:
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struct Entry {
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Entry() : tag(llvm::dwarf::DW_TAG_null), name(nullptr) {}
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Entry(dw_tag_t t, const char *n) : tag(t), name(n) {}
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bool NameMatches(const Entry &rhs) const {
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if (name == rhs.name)
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return true;
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else if (name && rhs.name)
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return strcmp(name, rhs.name) == 0;
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return false;
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}
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// Test operator
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explicit operator bool() const { return tag != 0; }
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dw_tag_t tag;
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const char *name;
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};
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DWARFDeclContext() : m_entries(), m_language(lldb::eLanguageTypeUnknown) {}
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void AppendDeclContext(dw_tag_t tag, const char *name) {
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m_entries.push_back(Entry(tag, name));
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}
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bool operator==(const DWARFDeclContext &rhs) const;
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uint32_t GetSize() const { return m_entries.size(); }
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Entry &operator[](uint32_t idx) {
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// "idx" must be valid
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return m_entries[idx];
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}
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const Entry &operator[](uint32_t idx) const {
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// "idx" must be valid
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return m_entries[idx];
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}
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const char *GetQualifiedName() const;
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// Same as GetQaulifiedName, but the life time of the returned string will
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// be that of the LLDB session.
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lldb_private::ConstString GetQualifiedNameAsConstString() const {
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return lldb_private::ConstString(GetQualifiedName());
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}
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void Clear() {
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m_entries.clear();
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m_qualified_name.clear();
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}
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lldb::LanguageType GetLanguage() const { return m_language; }
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void SetLanguage(lldb::LanguageType language) { m_language = language; }
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protected:
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typedef std::vector<Entry> collection;
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collection m_entries;
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mutable std::string m_qualified_name;
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lldb::LanguageType m_language;
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};
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#endif // SymbolFileDWARF_DWARFDeclContext_h_
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