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523 lines
18 KiB
523 lines
18 KiB
//===-- SymbolFileDWARF.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 LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H
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#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H
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#include <list>
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#include <map>
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#include <mutex>
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#include <unordered_map>
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#include <vector>
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SetVector.h"
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#include "llvm/Support/Threading.h"
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#include "lldb/Core/UniqueCStringMap.h"
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#include "lldb/Core/dwarf.h"
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#include "lldb/Symbol/DebugMacros.h"
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#include "lldb/Symbol/SymbolContext.h"
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#include "lldb/Symbol/SymbolFile.h"
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#include "lldb/Utility/ConstString.h"
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#include "lldb/Utility/Flags.h"
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#include "lldb/Utility/RangeMap.h"
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#include "lldb/lldb-private.h"
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#include "DWARFContext.h"
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#include "DWARFDataExtractor.h"
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#include "DWARFDefines.h"
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#include "DWARFIndex.h"
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#include "UniqueDWARFASTType.h"
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// Forward Declarations for this DWARF plugin
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class DebugMapModule;
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class DWARFAbbreviationDeclaration;
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class DWARFAbbreviationDeclarationSet;
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class DWARFCompileUnit;
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class DWARFDebugAbbrev;
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class DWARFDebugAranges;
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class DWARFDebugInfo;
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class DWARFDebugInfoEntry;
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class DWARFDebugLine;
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class DWARFDebugRanges;
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class DWARFDeclContext;
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class DWARFFormValue;
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class DWARFTypeUnit;
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class SymbolFileDWARFDebugMap;
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class SymbolFileDWARFDwo;
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class SymbolFileDWARFDwp;
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#define DIE_IS_BEING_PARSED ((lldb_private::Type *)1)
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class SymbolFileDWARF : public lldb_private::SymbolFile,
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public lldb_private::UserID {
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/// LLVM RTTI support.
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static char ID;
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public:
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/// LLVM RTTI support.
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/// \{
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bool isA(const void *ClassID) const override {
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return ClassID == &ID || SymbolFile::isA(ClassID);
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}
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static bool classof(const SymbolFile *obj) { return obj->isA(&ID); }
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/// \}
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friend class SymbolFileDWARFDebugMap;
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friend class SymbolFileDWARFDwo;
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friend class DebugMapModule;
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friend class DWARFCompileUnit;
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friend class DWARFDIE;
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friend class DWARFASTParserClang;
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// Static Functions
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static void Initialize();
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static void Terminate();
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static void DebuggerInitialize(lldb_private::Debugger &debugger);
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static lldb_private::ConstString GetPluginNameStatic();
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static const char *GetPluginDescriptionStatic();
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static lldb_private::SymbolFile *
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CreateInstance(lldb::ObjectFileSP objfile_sp);
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// Constructors and Destructors
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SymbolFileDWARF(lldb::ObjectFileSP objfile_sp,
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lldb_private::SectionList *dwo_section_list);
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~SymbolFileDWARF() override;
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uint32_t CalculateAbilities() override;
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void InitializeObject() override;
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// Compile Unit function calls
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lldb::LanguageType
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ParseLanguage(lldb_private::CompileUnit &comp_unit) override;
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lldb_private::XcodeSDK
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ParseXcodeSDK(lldb_private::CompileUnit &comp_unit) override;
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size_t ParseFunctions(lldb_private::CompileUnit &comp_unit) override;
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bool ParseLineTable(lldb_private::CompileUnit &comp_unit) override;
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bool ParseDebugMacros(lldb_private::CompileUnit &comp_unit) override;
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bool ForEachExternalModule(
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lldb_private::CompileUnit &, llvm::DenseSet<lldb_private::SymbolFile *> &,
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llvm::function_ref<bool(lldb_private::Module &)>) override;
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bool ParseSupportFiles(lldb_private::CompileUnit &comp_unit,
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lldb_private::FileSpecList &support_files) override;
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bool ParseIsOptimized(lldb_private::CompileUnit &comp_unit) override;
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size_t ParseTypes(lldb_private::CompileUnit &comp_unit) override;
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bool ParseImportedModules(
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const lldb_private::SymbolContext &sc,
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std::vector<lldb_private::SourceModule> &imported_modules) override;
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size_t ParseBlocksRecursive(lldb_private::Function &func) override;
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size_t
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ParseVariablesForContext(const lldb_private::SymbolContext &sc) override;
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lldb_private::Type *ResolveTypeUID(lldb::user_id_t type_uid) override;
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llvm::Optional<ArrayInfo> GetDynamicArrayInfoForUID(
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lldb::user_id_t type_uid,
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const lldb_private::ExecutionContext *exe_ctx) override;
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bool CompleteType(lldb_private::CompilerType &compiler_type) override;
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lldb_private::Type *ResolveType(const DWARFDIE &die,
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bool assert_not_being_parsed = true,
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bool resolve_function_context = false);
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lldb_private::CompilerDecl GetDeclForUID(lldb::user_id_t uid) override;
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lldb_private::CompilerDeclContext
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GetDeclContextForUID(lldb::user_id_t uid) override;
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lldb_private::CompilerDeclContext
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GetDeclContextContainingUID(lldb::user_id_t uid) override;
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void
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ParseDeclsForContext(lldb_private::CompilerDeclContext decl_ctx) override;
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uint32_t ResolveSymbolContext(const lldb_private::Address &so_addr,
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lldb::SymbolContextItem resolve_scope,
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lldb_private::SymbolContext &sc) override;
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uint32_t
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ResolveSymbolContext(const lldb_private::FileSpec &file_spec, uint32_t line,
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bool check_inlines,
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lldb::SymbolContextItem resolve_scope,
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lldb_private::SymbolContextList &sc_list) override;
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void
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FindGlobalVariables(lldb_private::ConstString name,
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const lldb_private::CompilerDeclContext &parent_decl_ctx,
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uint32_t max_matches,
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lldb_private::VariableList &variables) override;
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void FindGlobalVariables(const lldb_private::RegularExpression ®ex,
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uint32_t max_matches,
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lldb_private::VariableList &variables) override;
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void FindFunctions(lldb_private::ConstString name,
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const lldb_private::CompilerDeclContext &parent_decl_ctx,
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lldb::FunctionNameType name_type_mask,
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bool include_inlines,
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lldb_private::SymbolContextList &sc_list) override;
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void FindFunctions(const lldb_private::RegularExpression ®ex,
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bool include_inlines,
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lldb_private::SymbolContextList &sc_list) override;
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void GetMangledNamesForFunction(
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const std::string &scope_qualified_name,
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std::vector<lldb_private::ConstString> &mangled_names) override;
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void
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FindTypes(lldb_private::ConstString name,
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const lldb_private::CompilerDeclContext &parent_decl_ctx,
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uint32_t max_matches,
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llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files,
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lldb_private::TypeMap &types) override;
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void FindTypes(llvm::ArrayRef<lldb_private::CompilerContext> pattern,
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lldb_private::LanguageSet languages,
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llvm::DenseSet<SymbolFile *> &searched_symbol_files,
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lldb_private::TypeMap &types) override;
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void GetTypes(lldb_private::SymbolContextScope *sc_scope,
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lldb::TypeClass type_mask,
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lldb_private::TypeList &type_list) override;
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llvm::Expected<lldb_private::TypeSystem &>
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GetTypeSystemForLanguage(lldb::LanguageType language) override;
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lldb_private::CompilerDeclContext FindNamespace(
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lldb_private::ConstString name,
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const lldb_private::CompilerDeclContext &parent_decl_ctx) override;
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void PreloadSymbols() override;
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std::recursive_mutex &GetModuleMutex() const override;
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// PluginInterface protocol
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lldb_private::ConstString GetPluginName() override;
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uint32_t GetPluginVersion() override;
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DWARFDebugAbbrev *DebugAbbrev();
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DWARFDebugInfo &DebugInfo();
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DWARFDebugRanges *GetDebugRanges();
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static bool SupportedVersion(uint16_t version);
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DWARFDIE
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GetDeclContextDIEContainingDIE(const DWARFDIE &die);
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bool
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HasForwardDeclForClangType(const lldb_private::CompilerType &compiler_type);
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lldb_private::CompileUnit *
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GetCompUnitForDWARFCompUnit(DWARFCompileUnit &dwarf_cu);
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virtual void GetObjCMethods(lldb_private::ConstString class_name,
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llvm::function_ref<bool(DWARFDIE die)> callback);
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bool Supports_DW_AT_APPLE_objc_complete_type(DWARFUnit *cu);
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lldb_private::DebugMacrosSP ParseDebugMacros(lldb::offset_t *offset);
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static DWARFDIE GetParentSymbolContextDIE(const DWARFDIE &die);
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lldb::ModuleSP GetExternalModule(lldb_private::ConstString name);
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typedef std::map<lldb_private::ConstString, lldb::ModuleSP>
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ExternalTypeModuleMap;
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/// Return the list of Clang modules imported by this SymbolFile.
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const ExternalTypeModuleMap& getExternalTypeModules() const {
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return m_external_type_modules;
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}
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virtual DWARFDIE GetDIE(const DIERef &die_ref);
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DWARFDIE GetDIE(lldb::user_id_t uid);
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lldb::user_id_t GetUID(const DWARFBaseDIE &die) {
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return GetUID(die.GetDIERef());
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}
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lldb::user_id_t GetUID(const llvm::Optional<DIERef> &ref) {
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return ref ? GetUID(*ref) : LLDB_INVALID_UID;
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}
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lldb::user_id_t GetUID(DIERef ref);
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std::shared_ptr<SymbolFileDWARFDwo>
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GetDwoSymbolFileForCompileUnit(DWARFUnit &dwarf_cu,
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const DWARFDebugInfoEntry &cu_die);
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virtual llvm::Optional<uint32_t> GetDwoNum() { return llvm::None; }
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/// If this is a DWARF object with a single CU, return its DW_AT_dwo_id.
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llvm::Optional<uint64_t> GetDWOId();
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static bool
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DIEInDeclContext(const lldb_private::CompilerDeclContext &parent_decl_ctx,
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const DWARFDIE &die);
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std::vector<std::unique_ptr<lldb_private::CallEdge>>
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ParseCallEdgesInFunction(UserID func_id) override;
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void Dump(lldb_private::Stream &s) override;
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void DumpClangAST(lldb_private::Stream &s) override;
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lldb_private::DWARFContext &GetDWARFContext() { return m_context; }
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const std::shared_ptr<SymbolFileDWARFDwo> &GetDwpSymbolFile();
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lldb_private::FileSpec GetFile(DWARFUnit &unit, size_t file_idx);
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static llvm::Expected<lldb_private::TypeSystem &>
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GetTypeSystem(DWARFUnit &unit);
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static DWARFASTParser *GetDWARFParser(DWARFUnit &unit);
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// CompilerDecl related functions
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static lldb_private::CompilerDecl GetDecl(const DWARFDIE &die);
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static lldb_private::CompilerDeclContext GetDeclContext(const DWARFDIE &die);
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static lldb_private::CompilerDeclContext
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GetContainingDeclContext(const DWARFDIE &die);
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static DWARFDeclContext GetDWARFDeclContext(const DWARFDIE &die);
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static lldb::LanguageType LanguageTypeFromDWARF(uint64_t val);
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static lldb::LanguageType GetLanguage(DWARFUnit &unit);
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protected:
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb_private::Type *>
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DIEToTypePtr;
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *, lldb::VariableSP>
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DIEToVariableSP;
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typedef llvm::DenseMap<const DWARFDebugInfoEntry *,
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lldb::opaque_compiler_type_t>
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DIEToClangType;
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typedef llvm::DenseMap<lldb::opaque_compiler_type_t, DIERef> ClangTypeToDIE;
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SymbolFileDWARF(const SymbolFileDWARF &) = delete;
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const SymbolFileDWARF &operator=(const SymbolFileDWARF &) = delete;
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virtual void LoadSectionData(lldb::SectionType sect_type,
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lldb_private::DWARFDataExtractor &data);
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bool DeclContextMatchesThisSymbolFile(
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const lldb_private::CompilerDeclContext &decl_ctx);
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uint32_t CalculateNumCompileUnits() override;
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lldb::CompUnitSP ParseCompileUnitAtIndex(uint32_t index) override;
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lldb_private::TypeList &GetTypeList() override;
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lldb::CompUnitSP ParseCompileUnit(DWARFCompileUnit &dwarf_cu);
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virtual DWARFCompileUnit *
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GetDWARFCompileUnit(lldb_private::CompileUnit *comp_unit);
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DWARFUnit *GetNextUnparsedDWARFCompileUnit(DWARFUnit *prev_cu);
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bool GetFunction(const DWARFDIE &die, lldb_private::SymbolContext &sc);
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lldb_private::Function *ParseFunction(lldb_private::CompileUnit &comp_unit,
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const DWARFDIE &die);
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size_t ParseBlocksRecursive(lldb_private::CompileUnit &comp_unit,
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lldb_private::Block *parent_block,
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const DWARFDIE &die,
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lldb::addr_t subprogram_low_pc, uint32_t depth);
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size_t ParseTypes(const lldb_private::SymbolContext &sc, const DWARFDIE &die,
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bool parse_siblings, bool parse_children);
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lldb::TypeSP ParseType(const lldb_private::SymbolContext &sc,
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const DWARFDIE &die, bool *type_is_new);
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lldb_private::Type *ResolveTypeUID(const DWARFDIE &die,
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bool assert_not_being_parsed);
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lldb_private::Type *ResolveTypeUID(const DIERef &die_ref);
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lldb::VariableSP ParseVariableDIE(const lldb_private::SymbolContext &sc,
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const DWARFDIE &die,
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const lldb::addr_t func_low_pc);
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size_t ParseVariables(const lldb_private::SymbolContext &sc,
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const DWARFDIE &orig_die,
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const lldb::addr_t func_low_pc, bool parse_siblings,
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bool parse_children,
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lldb_private::VariableList *cc_variable_list = nullptr);
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bool ClassOrStructIsVirtual(const DWARFDIE &die);
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// Given a die_offset, figure out the symbol context representing that die.
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bool ResolveFunction(const DWARFDIE &die, bool include_inlines,
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lldb_private::SymbolContextList &sc_list);
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/// Resolve functions and (possibly) blocks for the given file address and a
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/// compile unit. The compile unit comes from the sc argument and it must be
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/// set. The results of the lookup (if any) are written back to the symbol
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/// context.
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void ResolveFunctionAndBlock(lldb::addr_t file_vm_addr, bool lookup_block,
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lldb_private::SymbolContext &sc);
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virtual lldb::TypeSP
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FindDefinitionTypeForDWARFDeclContext(const DWARFDeclContext &die_decl_ctx);
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virtual lldb::TypeSP FindCompleteObjCDefinitionTypeForDIE(
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const DWARFDIE &die, lldb_private::ConstString type_name,
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bool must_be_implementation);
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lldb_private::Symbol *
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GetObjCClassSymbol(lldb_private::ConstString objc_class_name);
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lldb::TypeSP GetTypeForDIE(const DWARFDIE &die,
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bool resolve_function_context = false);
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void SetDebugMapModule(const lldb::ModuleSP &module_sp) {
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m_debug_map_module_wp = module_sp;
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}
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SymbolFileDWARFDebugMap *GetDebugMapSymfile();
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DWARFDIE
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FindBlockContainingSpecification(const DIERef &func_die_ref,
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dw_offset_t spec_block_die_offset);
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DWARFDIE
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FindBlockContainingSpecification(const DWARFDIE &die,
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dw_offset_t spec_block_die_offset);
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virtual UniqueDWARFASTTypeMap &GetUniqueDWARFASTTypeMap();
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bool DIEDeclContextsMatch(const DWARFDIE &die1, const DWARFDIE &die2);
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bool ClassContainsSelector(const DWARFDIE &class_die,
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lldb_private::ConstString selector);
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/// Parse call site entries (DW_TAG_call_site), including any nested call site
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/// parameters (DW_TAG_call_site_parameter).
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std::vector<std::unique_ptr<lldb_private::CallEdge>>
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CollectCallEdges(lldb::ModuleSP module, DWARFDIE function_die);
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/// If this symbol file is linked to by a debug map (see
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/// SymbolFileDWARFDebugMap), and \p file_addr is a file address relative to
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/// an object file, adjust \p file_addr so that it is relative to the main
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/// binary. Returns the adjusted address, or \p file_addr if no adjustment is
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/// needed, on success and LLDB_INVALID_ADDRESS otherwise.
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lldb::addr_t FixupAddress(lldb::addr_t file_addr);
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bool FixupAddress(lldb_private::Address &addr);
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typedef llvm::SetVector<lldb_private::Type *> TypeSet;
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void GetTypes(const DWARFDIE &die, dw_offset_t min_die_offset,
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dw_offset_t max_die_offset, uint32_t type_mask,
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TypeSet &type_set);
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typedef lldb_private::RangeDataVector<lldb::addr_t, lldb::addr_t,
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lldb_private::Variable *>
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GlobalVariableMap;
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GlobalVariableMap &GetGlobalAranges();
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void UpdateExternalModuleListIfNeeded();
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virtual DIEToTypePtr &GetDIEToType() { return m_die_to_type; }
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virtual DIEToVariableSP &GetDIEToVariable() { return m_die_to_variable_sp; }
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virtual DIEToClangType &GetForwardDeclDieToClangType() {
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return m_forward_decl_die_to_clang_type;
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}
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virtual ClangTypeToDIE &GetForwardDeclClangTypeToDie() {
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return m_forward_decl_clang_type_to_die;
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}
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void BuildCuTranslationTable();
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llvm::Optional<uint32_t> GetDWARFUnitIndex(uint32_t cu_idx);
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struct DecodedUID {
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SymbolFileDWARF &dwarf;
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DIERef ref;
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};
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llvm::Optional<DecodedUID> DecodeUID(lldb::user_id_t uid);
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void FindDwpSymbolFile();
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const lldb_private::FileSpecList &GetTypeUnitSupportFiles(DWARFTypeUnit &tu);
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lldb::ModuleWP m_debug_map_module_wp;
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SymbolFileDWARFDebugMap *m_debug_map_symfile;
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llvm::once_flag m_dwp_symfile_once_flag;
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std::shared_ptr<SymbolFileDWARFDwo> m_dwp_symfile;
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lldb_private::DWARFContext m_context;
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llvm::once_flag m_info_once_flag;
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std::unique_ptr<DWARFDebugInfo> m_info;
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std::unique_ptr<DWARFDebugAbbrev> m_abbr;
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std::unique_ptr<GlobalVariableMap> m_global_aranges_up;
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typedef std::unordered_map<lldb::offset_t, lldb_private::DebugMacrosSP>
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DebugMacrosMap;
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DebugMacrosMap m_debug_macros_map;
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ExternalTypeModuleMap m_external_type_modules;
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std::unique_ptr<lldb_private::DWARFIndex> m_index;
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bool m_fetched_external_modules : 1;
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lldb_private::LazyBool m_supports_DW_AT_APPLE_objc_complete_type;
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typedef std::set<DIERef> DIERefSet;
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typedef llvm::StringMap<DIERefSet> NameToOffsetMap;
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NameToOffsetMap m_function_scope_qualified_name_map;
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std::unique_ptr<DWARFDebugRanges> m_ranges;
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UniqueDWARFASTTypeMap m_unique_ast_type_map;
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DIEToTypePtr m_die_to_type;
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DIEToVariableSP m_die_to_variable_sp;
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DIEToClangType m_forward_decl_die_to_clang_type;
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ClangTypeToDIE m_forward_decl_clang_type_to_die;
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llvm::DenseMap<dw_offset_t, lldb_private::FileSpecList>
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m_type_unit_support_files;
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std::vector<uint32_t> m_lldb_cu_to_dwarf_unit;
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};
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#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_SYMBOLFILEDWARF_H
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