1//===-- DWARFASTParserClang.h -----------------------------------*- C++ -*-===//
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#ifndef LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFASTPARSERCLANG_H
10#define LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFASTPARSERCLANG_H
11
12#include "clang/AST/CharUnits.h"
13#include "clang/AST/Type.h"
14#include "llvm/ADT/DenseMap.h"
15#include "llvm/ADT/SmallPtrSet.h"
16#include "llvm/ADT/SmallVector.h"
17
18#include "DWARFASTParser.h"
19#include "DWARFDIE.h"
20#include "DWARFDefines.h"
21#include "DWARFFormValue.h"
22#include "LogChannelDWARF.h"
23#include "lldb/Core/PluginInterface.h"
24
25#include "Plugins/ExpressionParser/Clang/ClangASTImporter.h"
26#include "Plugins/Language/ObjC/ObjCLanguage.h"
27#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
28
29#include <optional>
30#include <vector>
31
32namespace lldb_private {
33class CompileUnit;
34}
35namespace lldb_private::plugin {
36namespace dwarf {
37class DWARFDebugInfoEntry;
38class SymbolFileDWARF;
39} // namespace dwarf
40} // namespace lldb_private::plugin
41
42struct ParsedDWARFTypeAttributes;
43
44class DWARFASTParserClang : public lldb_private::plugin::dwarf::DWARFASTParser {
45public:
46 DWARFASTParserClang(lldb_private::TypeSystemClang &ast);
47
48 ~DWARFASTParserClang() override;
49
50 // DWARFASTParser interface.
51 lldb::TypeSP
52 ParseTypeFromDWARF(const lldb_private::SymbolContext &sc,
53 const lldb_private::plugin::dwarf::DWARFDIE &die,
54 bool *type_is_new_ptr) override;
55
56 lldb_private::ConstString ConstructDemangledNameFromDWARF(
57 const lldb_private::plugin::dwarf::DWARFDIE &die) override;
58
59 lldb_private::Function *
60 ParseFunctionFromDWARF(lldb_private::CompileUnit &comp_unit,
61 const lldb_private::plugin::dwarf::DWARFDIE &die,
62 lldb_private::AddressRanges func_ranges) override;
63
64 bool CompleteTypeFromDWARF(
65 const lldb_private::plugin::dwarf::DWARFDIE &die,
66 lldb_private::Type *type,
67 const lldb_private::CompilerType &compiler_type) override;
68
69 lldb_private::CompilerDecl GetDeclForUIDFromDWARF(
70 const lldb_private::plugin::dwarf::DWARFDIE &die) override;
71
72 void EnsureAllDIEsInDeclContextHaveBeenParsed(
73 lldb_private::CompilerDeclContext decl_context) override;
74
75 lldb_private::CompilerDeclContext GetDeclContextForUIDFromDWARF(
76 const lldb_private::plugin::dwarf::DWARFDIE &die) override;
77
78 lldb_private::CompilerDeclContext GetDeclContextContainingUIDFromDWARF(
79 const lldb_private::plugin::dwarf::DWARFDIE &die) override;
80
81 lldb_private::ClangASTImporter &GetClangASTImporter();
82
83 /// Extracts an value for a given Clang integer type from a DWARFFormValue.
84 ///
85 /// \param int_type The Clang type that defines the bit size and signedness
86 /// of the integer that should be extracted. Has to be either
87 /// an integer type or an enum type. For enum types the
88 /// underlying integer type will be considered as the
89 /// expected integer type that should be extracted.
90 /// \param form_value The DWARFFormValue that contains the integer value.
91 /// \return An APInt containing the same integer value as the given
92 /// DWARFFormValue with the bit width of the given integer type.
93 /// Returns an error if the value in the DWARFFormValue does not fit
94 /// into the given integer type or the integer type isn't supported.
95 llvm::Expected<llvm::APInt> ExtractIntFromFormValue(
96 const lldb_private::CompilerType &int_type,
97 const lldb_private::plugin::dwarf::DWARFFormValue &form_value) const;
98
99 /// Returns the template parameters of a class DWARFDIE as a string.
100 ///
101 /// This is mostly useful for -gsimple-template-names which omits template
102 /// parameters from the DIE name and instead always adds template parameter
103 /// children DIEs.
104 ///
105 /// \param die The struct/class DWARFDIE containing template parameters.
106 /// \return A string, including surrounding '<>', of the template parameters.
107 /// If the DIE's name already has '<>', returns an empty string because
108 /// it's assumed that the caller is using the DIE name anyway.
109 std::string
110 GetDIEClassTemplateParams(lldb_private::plugin::dwarf::DWARFDIE die) override;
111
112 void MapDeclDIEToDefDIE(const lldb_private::plugin::dwarf::DWARFDIE &decl_die,
113 const lldb_private::plugin::dwarf::DWARFDIE &def_die);
114
115 /// Get the object parameter DIE if one exists, otherwise returns
116 /// a default DWARFDIE.
117 ///
118 /// \param[in] subprogram DIE of function for which to get the object
119 /// parameter. \param[in] containing_decl_ctx DIE representing declaration
120 /// context of \a subprogram. If this DIE isn't a valid declaration context
121 /// for class methods, assume no object parameter exists.
122 ///
123 /// \returns DIE of object parameter if one exists.
124 ///
125 lldb_private::plugin::dwarf::DWARFDIE
126 GetObjectParameter(const lldb_private::plugin::dwarf::DWARFDIE &subprogram,
127 const lldb_private::plugin::dwarf::DWARFDIE &decl_ctx_die);
128
129protected:
130 /// Protected typedefs and members.
131 /// @{
132 class DelayedAddObjCClassProperty;
133 typedef std::vector<DelayedAddObjCClassProperty> DelayedPropertyList;
134
135 typedef llvm::DenseMap<
136 const lldb_private::plugin::dwarf::DWARFDebugInfoEntry *,
137 clang::DeclContext *>
138 DIEToDeclContextMap;
139 typedef std::multimap<const clang::DeclContext *,
140 const lldb_private::plugin::dwarf::DWARFDIE>
141 DeclContextToDIEMap;
142 typedef llvm::DenseMap<
143 const lldb_private::plugin::dwarf::DWARFDebugInfoEntry *,
144 lldb_private::OptionalClangModuleID>
145 DIEToModuleMap;
146 typedef llvm::DenseMap<
147 const lldb_private::plugin::dwarf::DWARFDebugInfoEntry *, clang::Decl *>
148 DIEToDeclMap;
149
150 lldb_private::TypeSystemClang &m_ast;
151 DIEToDeclMap m_die_to_decl;
152 DIEToDeclContextMap m_die_to_decl_ctx;
153 DeclContextToDIEMap m_decl_ctx_to_die;
154 DIEToModuleMap m_die_to_module;
155 std::unique_ptr<lldb_private::ClangASTImporter> m_clang_ast_importer_up;
156 /// @}
157
158 clang::DeclContext *
159 GetDeclContextForBlock(const lldb_private::plugin::dwarf::DWARFDIE &die);
160
161 clang::BlockDecl *
162 ResolveBlockDIE(const lldb_private::plugin::dwarf::DWARFDIE &die);
163
164 clang::NamespaceDecl *
165 ResolveNamespaceDIE(const lldb_private::plugin::dwarf::DWARFDIE &die);
166
167 /// Returns the namespace decl that a DW_TAG_imported_declaration imports.
168 ///
169 /// \param[in] die The import declaration to resolve. If the DIE is not a
170 /// DW_TAG_imported_declaration the behaviour is undefined.
171 ///
172 /// \returns The decl corresponding to the namespace that the specified
173 /// 'die' imports. If the imported entity is not a namespace
174 /// or another import declaration, returns nullptr. If an error
175 /// occurs, returns nullptr.
176 clang::NamespaceDecl *ResolveImportedDeclarationDIE(
177 const lldb_private::plugin::dwarf::DWARFDIE &die);
178
179 bool ParseTemplateDIE(const lldb_private::plugin::dwarf::DWARFDIE &die,
180 lldb_private::TypeSystemClang::TemplateParameterInfos
181 &template_param_infos);
182
183 bool ParseTemplateParameterInfos(
184 const lldb_private::plugin::dwarf::DWARFDIE &parent_die,
185 lldb_private::TypeSystemClang::TemplateParameterInfos
186 &template_param_infos);
187
188 void GetUniqueTypeNameAndDeclaration(
189 const lldb_private::plugin::dwarf::DWARFDIE &die,
190 lldb::LanguageType language, lldb_private::ConstString &unique_typename,
191 lldb_private::Declaration &decl_declaration);
192
193 bool ParseChildMembers(
194 const lldb_private::plugin::dwarf::DWARFDIE &die,
195 const lldb_private::CompilerType &class_compiler_type,
196 std::vector<std::unique_ptr<clang::CXXBaseSpecifier>> &base_classes,
197 std::vector<lldb_private::plugin::dwarf::DWARFDIE> &member_function_dies,
198 std::vector<lldb_private::plugin::dwarf::DWARFDIE> &contained_type_dies,
199 DelayedPropertyList &delayed_properties,
200 const lldb::AccessType default_accessibility,
201 lldb_private::ClangASTImporter::LayoutInfo &layout_info);
202
203 void ParseChildParameters(
204 clang::DeclContext *containing_decl_ctx,
205 const lldb_private::plugin::dwarf::DWARFDIE &parent_die,
206 bool &is_variadic, bool &has_template_params,
207 std::vector<lldb_private::CompilerType> &function_param_types,
208 llvm::SmallVectorImpl<llvm::StringRef> &function_param_names);
209
210 size_t ParseChildEnumerators(
211 const lldb_private::CompilerType &compiler_type, bool is_signed,
212 uint32_t enumerator_byte_size,
213 const lldb_private::plugin::dwarf::DWARFDIE &parent_die);
214
215 /// Parse a structure, class, or union type DIE.
216 lldb::TypeSP
217 ParseStructureLikeDIE(const lldb_private::SymbolContext &sc,
218 const lldb_private::plugin::dwarf::DWARFDIE &die,
219 ParsedDWARFTypeAttributes &attrs);
220
221 clang::Decl *
222 GetClangDeclForDIE(const lldb_private::plugin::dwarf::DWARFDIE &die);
223
224 clang::DeclContext *
225 GetClangDeclContextForDIE(const lldb_private::plugin::dwarf::DWARFDIE &die);
226
227 clang::DeclContext *GetClangDeclContextContainingDIE(
228 const lldb_private::plugin::dwarf::DWARFDIE &die,
229 lldb_private::plugin::dwarf::DWARFDIE *decl_ctx_die);
230 lldb_private::OptionalClangModuleID
231 GetOwningClangModule(const lldb_private::plugin::dwarf::DWARFDIE &die);
232
233 bool CopyUniqueClassMethodTypes(
234 const lldb_private::plugin::dwarf::DWARFDIE &src_class_die,
235 const lldb_private::plugin::dwarf::DWARFDIE &dst_class_die,
236 lldb_private::Type *class_type,
237 std::vector<lldb_private::plugin::dwarf::DWARFDIE> &failures);
238
239 clang::DeclContext *GetCachedClangDeclContextForDIE(
240 const lldb_private::plugin::dwarf::DWARFDIE &die);
241
242 void LinkDeclContextToDIE(clang::DeclContext *decl_ctx,
243 const lldb_private::plugin::dwarf::DWARFDIE &die);
244
245 void LinkDeclToDIE(clang::Decl *decl,
246 const lldb_private::plugin::dwarf::DWARFDIE &die);
247
248 /// If \p type_sp is valid, calculate and set its symbol context scope, and
249 /// update the type list for its backing symbol file.
250 ///
251 /// Returns \p type_sp.
252 lldb::TypeSP UpdateSymbolContextScopeForType(
253 const lldb_private::SymbolContext &sc,
254 const lldb_private::plugin::dwarf::DWARFDIE &die, lldb::TypeSP type_sp);
255
256 /// Follow Clang Module Skeleton CU references to find a type definition.
257 lldb::TypeSP
258 ParseTypeFromClangModule(const lldb_private::SymbolContext &sc,
259 const lldb_private::plugin::dwarf::DWARFDIE &die,
260 lldb_private::Log *log);
261
262 // Return true if this type is a declaration to a type in an external
263 // module.
264 lldb::ModuleSP
265 GetModuleForType(const lldb_private::plugin::dwarf::DWARFDIE &die);
266
267 static bool classof(const DWARFASTParser *Parser) {
268 return Parser->GetKind() == Kind::DWARFASTParserClang;
269 }
270
271private:
272 struct FieldInfo {
273 /// Size in bits that this field occupies. Can but
274 /// need not be the DW_AT_bit_size of the field.
275 uint64_t bit_size = 0;
276
277 /// Offset of this field in bits from the beginning
278 /// of the containing struct. Can but need not
279 /// be the DW_AT_data_bit_offset of the field.
280 uint64_t bit_offset = 0;
281
282 /// In case this field is folded into the storage
283 /// of a previous member's storage (for example
284 /// with [[no_unique_address]]), the effective field
285 /// end is the offset in bits from the beginning of
286 /// the containing struct where the field we were
287 /// folded into ended.
288 std::optional<uint64_t> effective_field_end;
289
290 /// Set to 'true' if this field is a bit-field.
291 bool is_bitfield = false;
292
293 /// Set to 'true' if this field is DW_AT_artificial.
294 bool is_artificial = false;
295
296 FieldInfo() = default;
297
298 void SetIsBitfield(bool flag) { is_bitfield = flag; }
299 bool IsBitfield() const { return is_bitfield; }
300
301 void SetIsArtificial(bool flag) { is_artificial = flag; }
302 bool IsArtificial() const { return is_artificial; }
303
304 bool NextBitfieldOffsetIsValid(const uint64_t next_bit_offset) const {
305 // Any subsequent bitfields must not overlap and must be at a higher
306 // bit offset than any previous bitfield + size.
307 return (bit_size + bit_offset) <= next_bit_offset;
308 }
309
310 /// Returns the offset in bits of where the storage this field
311 /// occupies ends.
312 uint64_t GetFieldEnd() const { return bit_size + bit_offset; }
313
314 void SetEffectiveFieldEnd(uint64_t val) { effective_field_end = val; }
315
316 /// If this field was folded into storage of a previous field,
317 /// returns the offset in bits of where that storage ends. Otherwise,
318 /// returns the regular field end (see \ref GetFieldEnd).
319 uint64_t GetEffectiveFieldEnd() const {
320 return effective_field_end.value_or(u: GetFieldEnd());
321 }
322 };
323
324 /// Parsed form of all attributes that are relevant for parsing type members.
325 struct MemberAttributes {
326 explicit MemberAttributes(
327 const lldb_private::plugin::dwarf::DWARFDIE &die,
328 const lldb_private::plugin::dwarf::DWARFDIE &parent_die,
329 lldb::ModuleSP module_sp);
330 const char *name = nullptr;
331 /// Indicates how many bits into the word (according to the host endianness)
332 /// the low-order bit of the field starts. Can be negative.
333 int64_t bit_offset = 0;
334 /// Indicates the size of the field in bits.
335 size_t bit_size = 0;
336 uint64_t data_bit_offset = UINT64_MAX;
337 lldb::AccessType accessibility = lldb::eAccessNone;
338 std::optional<uint64_t> byte_size;
339 std::optional<lldb_private::plugin::dwarf::DWARFFormValue> const_value_form;
340 lldb_private::plugin::dwarf::DWARFFormValue encoding_form;
341 /// Indicates the byte offset of the word from the base address of the
342 /// structure.
343 uint32_t member_byte_offset = UINT32_MAX;
344 bool is_artificial = false;
345 bool is_declaration = false;
346 };
347
348 /// Returns 'true' if we should create an unnamed bitfield
349 /// and add it to the parser's current AST.
350 ///
351 /// \param[in] last_field_info FieldInfo of the previous DW_TAG_member
352 /// we parsed.
353 /// \param[in] last_field_end Offset (in bits) where the last parsed field
354 /// ended.
355 /// \param[in] this_field_info FieldInfo of the current DW_TAG_member
356 /// being parsed.
357 /// \param[in] layout_info Layout information of all decls parsed by the
358 /// current parser.
359 bool ShouldCreateUnnamedBitfield(
360 FieldInfo const &last_field_info, uint64_t last_field_end,
361 FieldInfo const &this_field_info,
362 lldb_private::ClangASTImporter::LayoutInfo const &layout_info) const;
363
364 /// Tries to detect whether \ref class_clang_type contained an unnamed
365 /// bit-field between \ref previous_field and \ref current_field, and if
366 /// so, adds a clang::FieldDecl representing that bit-field to
367 /// \ref class_clang_type.
368 ///
369 /// This is necessary because Clang (and GCC) doesn't emit a DW_TAG_member
370 /// entry for unnamed bit-fields. So we derive it (with some exceptions),
371 /// by checking whether there is a gap between where the storage of a
372 /// DW_TAG_member ended and the subsequent DW_TAG_member began.
373 ///
374 /// \param[in,out] layout_info Layout information of all decls parsed by the
375 /// current parser. Will contain an entry for
376 /// the unnamed bit-field if this function created
377 /// one.
378 ///
379 /// \param[in] class_clang_type The RecordType to which the unnamed bit-field
380 /// will be added (if any).
381 ///
382 /// \param[in] previous_field FieldInfo of the previous DW_TAG_member
383 /// we parsed.
384 ///
385 /// \param[in] current_field FieldInfo of the current DW_TAG_member
386 /// being parsed.
387 ///
388 void AddUnnamedBitfieldToRecordTypeIfNeeded(
389 lldb_private::ClangASTImporter::LayoutInfo &class_layout_info,
390 const lldb_private::CompilerType &class_clang_type,
391 const FieldInfo &previous_field, const FieldInfo &current_field);
392
393 /// Parses a DW_TAG_APPLE_property DIE and appends the parsed data to the
394 /// list of delayed Objective-C properties.
395 ///
396 /// Note: The delayed property needs to be finalized to actually create the
397 /// property declarations in the module AST.
398 ///
399 /// \param die The DW_TAG_APPLE_property DIE that will be parsed.
400 /// \param parent_die The parent DIE.
401 /// \param class_clang_type The Objective-C class that will contain the
402 /// created property.
403 /// \param delayed_properties The list of delayed properties that the result
404 /// will be appended to.
405 void
406 ParseObjCProperty(const lldb_private::plugin::dwarf::DWARFDIE &die,
407 const lldb_private::plugin::dwarf::DWARFDIE &parent_die,
408 const lldb_private::CompilerType &class_clang_type,
409 DelayedPropertyList &delayed_properties);
410
411 void
412 ParseSingleMember(const lldb_private::plugin::dwarf::DWARFDIE &die,
413 const lldb_private::plugin::dwarf::DWARFDIE &parent_die,
414 const lldb_private::CompilerType &class_clang_type,
415 lldb::AccessType default_accessibility,
416 lldb_private::ClangASTImporter::LayoutInfo &layout_info,
417 FieldInfo &last_field_info);
418
419 /// If the specified 'die' represents a static data member, creates
420 /// a 'clang::VarDecl' for it and attaches it to specified parent
421 /// 'class_clang_type'.
422 ///
423 /// \param[in] die The member declaration we want to create a
424 /// clang::VarDecl for.
425 ///
426 /// \param[in] attrs The parsed attributes for the specified 'die'.
427 ///
428 /// \param[in] class_clang_type The parent RecordType of the static
429 /// member this function will create.
430 void CreateStaticMemberVariable(
431 const lldb_private::plugin::dwarf::DWARFDIE &die,
432 const MemberAttributes &attrs,
433 const lldb_private::CompilerType &class_clang_type);
434
435 bool CompleteRecordType(const lldb_private::plugin::dwarf::DWARFDIE &die,
436 const lldb_private::CompilerType &clang_type);
437 bool CompleteEnumType(const lldb_private::plugin::dwarf::DWARFDIE &die,
438 lldb_private::Type *type,
439 const lldb_private::CompilerType &clang_type);
440
441 lldb::TypeSP
442 ParseTypeModifier(const lldb_private::SymbolContext &sc,
443 const lldb_private::plugin::dwarf::DWARFDIE &die,
444 ParsedDWARFTypeAttributes &attrs);
445 lldb::TypeSP ParseEnum(const lldb_private::SymbolContext &sc,
446 const lldb_private::plugin::dwarf::DWARFDIE &die,
447 ParsedDWARFTypeAttributes &attrs);
448 lldb::TypeSP ParseSubroutine(const lldb_private::plugin::dwarf::DWARFDIE &die,
449 const ParsedDWARFTypeAttributes &attrs);
450
451 /// Helper function called by \ref ParseSubroutine when parsing ObjC-methods.
452 ///
453 /// \param[in] objc_method Name of the ObjC method being parsed.
454 ///
455 /// \param[in] die The DIE that represents the ObjC method being parsed.
456 ///
457 /// \param[in] clang_type The CompilerType representing the function prototype
458 /// of the ObjC method being parsed.
459 ///
460 /// \param[in] attrs DWARF attributes for \ref die.
461 ///
462 /// \param[in] is_variadic Is true iff we're parsing a variadic method.
463 ///
464 /// \returns true on success
465 bool
466 ParseObjCMethod(const lldb_private::ObjCLanguage::ObjCMethodName &objc_method,
467 const lldb_private::plugin::dwarf::DWARFDIE &die,
468 lldb_private::CompilerType clang_type,
469 const ParsedDWARFTypeAttributes &attrs, bool is_variadic);
470
471 /// Helper function called by \ref ParseSubroutine when parsing C++ methods.
472 ///
473 /// \param[in] die The DIE that represents the C++ method being parsed.
474 ///
475 /// \param[in] clang_type The CompilerType representing the function prototype
476 /// of the C++ method being parsed.
477 ///
478 /// \param[in] attrs DWARF attributes for \ref die.
479 ///
480 /// \param[in] decl_ctx_die The DIE representing the DeclContext of the C++
481 /// method being parsed.
482 ///
483 /// \param[in] object_parameter The DIE of this subprogram's object parameter.
484 /// May be an invalid DIE for C++ static methods.
485 ///
486 /// \param[out] ignore_containing_context Will get set to true if the caller
487 /// should treat this C++ method as-if it was not a C++ method.
488 /// Currently used as a hack to work around templated C++ methods
489 /// causing class definitions to mismatch between CUs.
490 ///
491 /// \returns A pair of <bool, TypeSP>. The first element is 'true' on success.
492 /// The second element is non-null if we have previously parsed this
493 /// method (a null TypeSP does not indicate failure).
494 std::pair<bool, lldb::TypeSP>
495 ParseCXXMethod(const lldb_private::plugin::dwarf::DWARFDIE &die,
496 lldb_private::CompilerType clang_type,
497 const ParsedDWARFTypeAttributes &attrs,
498 const lldb_private::plugin::dwarf::DWARFDIE &decl_ctx_die,
499 const lldb_private::plugin::dwarf::DWARFDIE &object_parameter,
500 bool &ignore_containing_context);
501
502 lldb::TypeSP ParseArrayType(const lldb_private::plugin::dwarf::DWARFDIE &die,
503 const ParsedDWARFTypeAttributes &attrs);
504 lldb::TypeSP
505 ParsePointerToMemberType(const lldb_private::plugin::dwarf::DWARFDIE &die,
506 const ParsedDWARFTypeAttributes &attrs);
507
508 /// Parses a DW_TAG_inheritance DIE into a base/super class.
509 ///
510 /// \param die The DW_TAG_inheritance DIE to parse.
511 /// \param parent_die The parent DIE of the given DIE.
512 /// \param class_clang_type The C++/Objective-C class representing parent_die.
513 /// For an Objective-C class this method sets the super class on success. For
514 /// a C++ class this will *not* add the result as a base class.
515 /// \param default_accessibility The default accessibility that is given to
516 /// base classes if they don't have an explicit accessibility set.
517 /// \param module_sp The current Module.
518 /// \param base_classes The list of C++ base classes that will be appended
519 /// with the parsed base class on success.
520 /// \param layout_info The layout information that will be updated for C++
521 /// base classes with the base offset.
522 void ParseInheritance(
523 const lldb_private::plugin::dwarf::DWARFDIE &die,
524 const lldb_private::plugin::dwarf::DWARFDIE &parent_die,
525 const lldb_private::CompilerType class_clang_type,
526 const lldb::AccessType default_accessibility,
527 const lldb::ModuleSP &module_sp,
528 std::vector<std::unique_ptr<clang::CXXBaseSpecifier>> &base_classes,
529 lldb_private::ClangASTImporter::LayoutInfo &layout_info);
530
531 /// Parses DW_TAG_variant_part DIE into a structure that encodes all variants
532 /// Note that this is currently being emitted by rustc and not Clang
533 /// \param die DW_TAG_variant_part DIE to parse
534 /// \param parent_die The parent DW_TAG_structure_type to parse
535 /// \param class_clang_type The Rust struct representing parent_die.
536 /// \param default_accesibility The default accessibility that is given to
537 /// base classes if they don't have an explicit accessibility set
538 /// \param layout_info The layout information that will be updated for
539 // base classes with the base offset
540 void
541 ParseRustVariantPart(lldb_private::plugin::dwarf::DWARFDIE &die,
542 const lldb_private::plugin::dwarf::DWARFDIE &parent_die,
543 const lldb_private::CompilerType &class_clang_type,
544 const lldb::AccessType default_accesibility,
545 lldb_private::ClangASTImporter::LayoutInfo &layout_info);
546};
547
548/// Parsed form of all attributes that are relevant for type reconstruction.
549/// Some attributes are relevant for all kinds of types (declaration), while
550/// others are only meaningful to a specific type (is_virtual)
551struct ParsedDWARFTypeAttributes {
552 explicit ParsedDWARFTypeAttributes(
553 const lldb_private::plugin::dwarf::DWARFDIE &die);
554
555 lldb::AccessType accessibility = lldb::eAccessNone;
556 bool is_artificial = false;
557 bool is_complete_objc_class = false;
558 bool is_explicit = false;
559 bool is_forward_declaration = false;
560 bool is_inline = false;
561 bool is_scoped_enum = false;
562 bool is_vector = false;
563 bool is_virtual = false;
564 bool is_objc_direct_call = false;
565 bool exports_symbols = false;
566 clang::StorageClass storage = clang::SC_None;
567 const char *mangled_name = nullptr;
568 lldb_private::ConstString name;
569 lldb_private::Declaration decl;
570 lldb_private::plugin::dwarf::DWARFFormValue abstract_origin;
571 lldb_private::plugin::dwarf::DWARFFormValue containing_type;
572 lldb_private::plugin::dwarf::DWARFFormValue signature;
573 lldb_private::plugin::dwarf::DWARFFormValue specification;
574 lldb_private::plugin::dwarf::DWARFFormValue type;
575 lldb::LanguageType class_language = lldb::eLanguageTypeUnknown;
576 std::optional<uint64_t> byte_size;
577 std::optional<uint64_t> alignment;
578 size_t calling_convention = llvm::dwarf::DW_CC_normal;
579 uint32_t bit_stride = 0;
580 uint32_t byte_stride = 0;
581 uint32_t encoding = 0;
582
583 ///< Indicates ref-qualifier of C++ member function if present.
584 ///< Is RQ_None otherwise.
585 clang::RefQualifierKind ref_qual = clang::RQ_None;
586
587 ///< Has a value if this DIE represents an enum that was declared
588 ///< with enum_extensibility.
589 std::optional<clang::EnumExtensibilityAttr::Kind> enum_kind;
590};
591
592#endif // LLDB_SOURCE_PLUGINS_SYMBOLFILE_DWARF_DWARFASTPARSERCLANG_H
593

source code of lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.h