1 //===-- ClangASTSource.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 "ClangASTSource.h" 10 11 #include "ClangDeclVendor.h" 12 #include "ClangModulesDeclVendor.h" 13 14 #include "lldb/Core/Module.h" 15 #include "lldb/Core/ModuleList.h" 16 #include "lldb/Symbol/CompilerDeclContext.h" 17 #include "lldb/Symbol/Function.h" 18 #include "lldb/Symbol/SymbolFile.h" 19 #include "lldb/Symbol/TaggedASTType.h" 20 #include "lldb/Target/Target.h" 21 #include "lldb/Utility/LLDBLog.h" 22 #include "lldb/Utility/Log.h" 23 #include "clang/AST/ASTContext.h" 24 #include "clang/Basic/SourceManager.h" 25 26 #include "Plugins/ExpressionParser/Clang/ClangUtil.h" 27 #include "Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.h" 28 #include "Plugins/TypeSystem/Clang/TypeSystemClang.h" 29 30 #include <memory> 31 #include <vector> 32 33 using namespace clang; 34 using namespace lldb_private; 35 36 // Scoped class that will remove an active lexical decl from the set when it 37 // goes out of scope. 38 namespace { 39 class ScopedLexicalDeclEraser { 40 public: 41 ScopedLexicalDeclEraser(std::set<const clang::Decl *> &decls, 42 const clang::Decl *decl) 43 : m_active_lexical_decls(decls), m_decl(decl) {} 44 45 ~ScopedLexicalDeclEraser() { m_active_lexical_decls.erase(m_decl); } 46 47 private: 48 std::set<const clang::Decl *> &m_active_lexical_decls; 49 const clang::Decl *m_decl; 50 }; 51 } 52 53 ClangASTSource::ClangASTSource( 54 const lldb::TargetSP &target, 55 const std::shared_ptr<ClangASTImporter> &importer) 56 : m_lookups_enabled(false), m_target(target), m_ast_context(nullptr), 57 m_ast_importer_sp(importer), m_active_lexical_decls(), 58 m_active_lookups() { 59 assert(m_ast_importer_sp && "No ClangASTImporter passed to ClangASTSource?"); 60 } 61 62 void ClangASTSource::InstallASTContext(TypeSystemClang &clang_ast_context) { 63 m_ast_context = &clang_ast_context.getASTContext(); 64 m_clang_ast_context = &clang_ast_context; 65 m_file_manager = &m_ast_context->getSourceManager().getFileManager(); 66 m_ast_importer_sp->InstallMapCompleter(m_ast_context, *this); 67 } 68 69 ClangASTSource::~ClangASTSource() { 70 m_ast_importer_sp->ForgetDestination(m_ast_context); 71 72 if (!m_target) 73 return; 74 75 // Unregister the current ASTContext as a source for all scratch 76 // ASTContexts in the ClangASTImporter. Without this the scratch AST might 77 // query the deleted ASTContext for additional type information. 78 // We unregister from *all* scratch ASTContexts in case a type got exported 79 // to a scratch AST that isn't the best fitting scratch ASTContext. 80 lldb::TypeSystemClangSP scratch_ts_sp = ScratchTypeSystemClang::GetForTarget( 81 *m_target, ScratchTypeSystemClang::DefaultAST, false); 82 83 if (!scratch_ts_sp) 84 return; 85 86 ScratchTypeSystemClang *default_scratch_ast = 87 llvm::cast<ScratchTypeSystemClang>(scratch_ts_sp.get()); 88 // Unregister from the default scratch AST (and all sub-ASTs). 89 default_scratch_ast->ForgetSource(m_ast_context, *m_ast_importer_sp); 90 } 91 92 void ClangASTSource::StartTranslationUnit(ASTConsumer *Consumer) { 93 if (!m_ast_context) 94 return; 95 96 m_ast_context->getTranslationUnitDecl()->setHasExternalVisibleStorage(); 97 m_ast_context->getTranslationUnitDecl()->setHasExternalLexicalStorage(); 98 } 99 100 // The core lookup interface. 101 bool ClangASTSource::FindExternalVisibleDeclsByName( 102 const DeclContext *decl_ctx, DeclarationName clang_decl_name, 103 const clang::DeclContext *original_dc) { 104 if (!m_ast_context) { 105 SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); 106 return false; 107 } 108 109 std::string decl_name(clang_decl_name.getAsString()); 110 111 switch (clang_decl_name.getNameKind()) { 112 // Normal identifiers. 113 case DeclarationName::Identifier: { 114 clang::IdentifierInfo *identifier_info = 115 clang_decl_name.getAsIdentifierInfo(); 116 117 if (!identifier_info || identifier_info->getBuiltinID() != 0) { 118 SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); 119 return false; 120 } 121 } break; 122 123 // Operator names. 124 case DeclarationName::CXXOperatorName: 125 case DeclarationName::CXXLiteralOperatorName: 126 break; 127 128 // Using directives found in this context. 129 // Tell Sema we didn't find any or we'll end up getting asked a *lot*. 130 case DeclarationName::CXXUsingDirective: 131 SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); 132 return false; 133 134 case DeclarationName::ObjCZeroArgSelector: 135 case DeclarationName::ObjCOneArgSelector: 136 case DeclarationName::ObjCMultiArgSelector: { 137 llvm::SmallVector<NamedDecl *, 1> method_decls; 138 139 NameSearchContext method_search_context(*m_clang_ast_context, method_decls, 140 clang_decl_name, decl_ctx); 141 142 FindObjCMethodDecls(method_search_context); 143 144 SetExternalVisibleDeclsForName(decl_ctx, clang_decl_name, method_decls); 145 return (method_decls.size() > 0); 146 } 147 // These aren't possible in the global context. 148 case DeclarationName::CXXConstructorName: 149 case DeclarationName::CXXDestructorName: 150 case DeclarationName::CXXConversionFunctionName: 151 case DeclarationName::CXXDeductionGuideName: 152 SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); 153 return false; 154 } 155 156 if (!GetLookupsEnabled()) { 157 // Wait until we see a '$' at the start of a name before we start doing any 158 // lookups so we can avoid lookup up all of the builtin types. 159 if (!decl_name.empty() && decl_name[0] == '$') { 160 SetLookupsEnabled(true); 161 } else { 162 SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); 163 return false; 164 } 165 } 166 167 ConstString const_decl_name(decl_name.c_str()); 168 169 const char *uniqued_const_decl_name = const_decl_name.GetCString(); 170 if (m_active_lookups.find(uniqued_const_decl_name) != 171 m_active_lookups.end()) { 172 // We are currently looking up this name... 173 SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); 174 return false; 175 } 176 m_active_lookups.insert(uniqued_const_decl_name); 177 llvm::SmallVector<NamedDecl *, 4> name_decls; 178 NameSearchContext name_search_context(*m_clang_ast_context, name_decls, 179 clang_decl_name, decl_ctx); 180 FindExternalVisibleDecls(name_search_context); 181 SetExternalVisibleDeclsForName(decl_ctx, clang_decl_name, name_decls); 182 m_active_lookups.erase(uniqued_const_decl_name); 183 return (name_decls.size() != 0); 184 } 185 186 TagDecl *ClangASTSource::FindCompleteType(const TagDecl *decl) { 187 Log *log = GetLog(LLDBLog::Expressions); 188 189 if (const NamespaceDecl *namespace_context = 190 dyn_cast<NamespaceDecl>(decl->getDeclContext())) { 191 ClangASTImporter::NamespaceMapSP namespace_map = 192 m_ast_importer_sp->GetNamespaceMap(namespace_context); 193 194 if (!namespace_map) 195 return nullptr; 196 197 LLDB_LOGV(log, " CTD Inspecting namespace map{0:x} ({1} entries)", 198 namespace_map.get(), namespace_map->size()); 199 200 for (const ClangASTImporter::NamespaceMapItem &item : *namespace_map) { 201 LLDB_LOG(log, " CTD Searching namespace {0} in module {1}", 202 item.second.GetName(), item.first->GetFileSpec().GetFilename()); 203 204 ConstString name(decl->getName()); 205 206 // Create a type matcher using the CompilerDeclContext for the namespace 207 // as the context (item.second) and search for the name inside of this 208 // context. 209 TypeQuery query(item.second, name); 210 TypeResults results; 211 item.first->FindTypes(query, results); 212 213 for (const lldb::TypeSP &type_sp : results.GetTypeMap().Types()) { 214 CompilerType clang_type(type_sp->GetFullCompilerType()); 215 216 if (!ClangUtil::IsClangType(clang_type)) 217 continue; 218 219 const TagType *tag_type = 220 ClangUtil::GetQualType(clang_type)->getAs<TagType>(); 221 222 if (!tag_type) 223 continue; 224 225 TagDecl *candidate_tag_decl = 226 const_cast<TagDecl *>(tag_type->getDecl()); 227 228 if (TypeSystemClang::GetCompleteDecl( 229 &candidate_tag_decl->getASTContext(), candidate_tag_decl)) 230 return candidate_tag_decl; 231 } 232 } 233 } else { 234 const ModuleList &module_list = m_target->GetImages(); 235 // Create a type matcher using a CompilerDecl. Each TypeSystem class knows 236 // how to fill out a CompilerContext array using a CompilerDecl. 237 TypeQuery query(CompilerDecl(m_clang_ast_context, (void *)decl)); 238 TypeResults results; 239 module_list.FindTypes(nullptr, query, results); 240 for (const lldb::TypeSP &type_sp : results.GetTypeMap().Types()) { 241 242 CompilerType clang_type(type_sp->GetFullCompilerType()); 243 244 if (!ClangUtil::IsClangType(clang_type)) 245 continue; 246 247 const TagType *tag_type = 248 ClangUtil::GetQualType(clang_type)->getAs<TagType>(); 249 250 if (!tag_type) 251 continue; 252 253 TagDecl *candidate_tag_decl = const_cast<TagDecl *>(tag_type->getDecl()); 254 255 if (TypeSystemClang::GetCompleteDecl(&candidate_tag_decl->getASTContext(), 256 candidate_tag_decl)) 257 return candidate_tag_decl; 258 } 259 } 260 return nullptr; 261 } 262 263 void ClangASTSource::CompleteType(TagDecl *tag_decl) { 264 Log *log = GetLog(LLDBLog::Expressions); 265 266 if (log) { 267 LLDB_LOG(log, 268 " CompleteTagDecl on (ASTContext*){0} Completing " 269 "(TagDecl*){1:x} named {2}", 270 m_clang_ast_context->getDisplayName(), tag_decl, 271 tag_decl->getName()); 272 273 LLDB_LOG(log, " CTD Before:\n{0}", ClangUtil::DumpDecl(tag_decl)); 274 } 275 276 auto iter = m_active_lexical_decls.find(tag_decl); 277 if (iter != m_active_lexical_decls.end()) 278 return; 279 m_active_lexical_decls.insert(tag_decl); 280 ScopedLexicalDeclEraser eraser(m_active_lexical_decls, tag_decl); 281 282 if (!m_ast_importer_sp->CompleteTagDecl(tag_decl)) { 283 // We couldn't complete the type. Maybe there's a definition somewhere 284 // else that can be completed. 285 if (TagDecl *alternate = FindCompleteType(tag_decl)) 286 m_ast_importer_sp->CompleteTagDeclWithOrigin(tag_decl, alternate); 287 } 288 289 LLDB_LOG(log, " [CTD] After:\n{0}", ClangUtil::DumpDecl(tag_decl)); 290 } 291 292 void ClangASTSource::CompleteType(clang::ObjCInterfaceDecl *interface_decl) { 293 Log *log = GetLog(LLDBLog::Expressions); 294 295 LLDB_LOG(log, 296 " [CompleteObjCInterfaceDecl] on (ASTContext*){0:x} '{1}' " 297 "Completing an ObjCInterfaceDecl named {2}", 298 m_ast_context, m_clang_ast_context->getDisplayName(), 299 interface_decl->getName()); 300 LLDB_LOG(log, " [COID] Before:\n{0}", 301 ClangUtil::DumpDecl(interface_decl)); 302 303 ClangASTImporter::DeclOrigin original = m_ast_importer_sp->GetDeclOrigin(interface_decl); 304 305 if (original.Valid()) { 306 if (ObjCInterfaceDecl *original_iface_decl = 307 dyn_cast<ObjCInterfaceDecl>(original.decl)) { 308 ObjCInterfaceDecl *complete_iface_decl = 309 GetCompleteObjCInterface(original_iface_decl); 310 311 if (complete_iface_decl && (complete_iface_decl != original_iface_decl)) { 312 m_ast_importer_sp->SetDeclOrigin(interface_decl, complete_iface_decl); 313 } 314 } 315 } 316 317 m_ast_importer_sp->CompleteObjCInterfaceDecl(interface_decl); 318 319 if (interface_decl->getSuperClass() && 320 interface_decl->getSuperClass() != interface_decl) 321 CompleteType(interface_decl->getSuperClass()); 322 323 LLDB_LOG(log, " [COID] After:"); 324 LLDB_LOG(log, " [COID] {0}", ClangUtil::DumpDecl(interface_decl)); 325 } 326 327 clang::ObjCInterfaceDecl *ClangASTSource::GetCompleteObjCInterface( 328 const clang::ObjCInterfaceDecl *interface_decl) { 329 lldb::ProcessSP process(m_target->GetProcessSP()); 330 331 if (!process) 332 return nullptr; 333 334 ObjCLanguageRuntime *language_runtime(ObjCLanguageRuntime::Get(*process)); 335 336 if (!language_runtime) 337 return nullptr; 338 339 ConstString class_name(interface_decl->getNameAsString().c_str()); 340 341 lldb::TypeSP complete_type_sp( 342 language_runtime->LookupInCompleteClassCache(class_name)); 343 344 if (!complete_type_sp) 345 return nullptr; 346 347 TypeFromUser complete_type = 348 TypeFromUser(complete_type_sp->GetFullCompilerType()); 349 lldb::opaque_compiler_type_t complete_opaque_type = 350 complete_type.GetOpaqueQualType(); 351 352 if (!complete_opaque_type) 353 return nullptr; 354 355 const clang::Type *complete_clang_type = 356 QualType::getFromOpaquePtr(complete_opaque_type).getTypePtr(); 357 const ObjCInterfaceType *complete_interface_type = 358 dyn_cast<ObjCInterfaceType>(complete_clang_type); 359 360 if (!complete_interface_type) 361 return nullptr; 362 363 ObjCInterfaceDecl *complete_iface_decl(complete_interface_type->getDecl()); 364 365 return complete_iface_decl; 366 } 367 368 void ClangASTSource::FindExternalLexicalDecls( 369 const DeclContext *decl_context, 370 llvm::function_ref<bool(Decl::Kind)> predicate, 371 llvm::SmallVectorImpl<Decl *> &decls) { 372 373 Log *log = GetLog(LLDBLog::Expressions); 374 375 const Decl *context_decl = dyn_cast<Decl>(decl_context); 376 377 if (!context_decl) 378 return; 379 380 auto iter = m_active_lexical_decls.find(context_decl); 381 if (iter != m_active_lexical_decls.end()) 382 return; 383 m_active_lexical_decls.insert(context_decl); 384 ScopedLexicalDeclEraser eraser(m_active_lexical_decls, context_decl); 385 386 if (log) { 387 if (const NamedDecl *context_named_decl = dyn_cast<NamedDecl>(context_decl)) 388 LLDB_LOG(log, 389 "FindExternalLexicalDecls on (ASTContext*){0:x} '{1}' in " 390 "'{2}' ({3}Decl*){4}", 391 m_ast_context, m_clang_ast_context->getDisplayName(), 392 context_named_decl->getNameAsString().c_str(), 393 context_decl->getDeclKindName(), 394 static_cast<const void *>(context_decl)); 395 else if (context_decl) 396 LLDB_LOG(log, 397 "FindExternalLexicalDecls on (ASTContext*){0:x} '{1}' in " 398 "({2}Decl*){3}", 399 m_ast_context, m_clang_ast_context->getDisplayName(), 400 context_decl->getDeclKindName(), 401 static_cast<const void *>(context_decl)); 402 else 403 LLDB_LOG(log, 404 "FindExternalLexicalDecls on (ASTContext*){0:x} '{1}' in a " 405 "NULL context", 406 m_ast_context, m_clang_ast_context->getDisplayName()); 407 } 408 409 ClangASTImporter::DeclOrigin original = m_ast_importer_sp->GetDeclOrigin(context_decl); 410 411 if (!original.Valid()) 412 return; 413 414 LLDB_LOG(log, " FELD Original decl (ASTContext*){0:x} (Decl*){1:x}:\n{2}", 415 static_cast<void *>(original.ctx), 416 static_cast<void *>(original.decl), 417 ClangUtil::DumpDecl(original.decl)); 418 419 if (ObjCInterfaceDecl *original_iface_decl = 420 dyn_cast<ObjCInterfaceDecl>(original.decl)) { 421 ObjCInterfaceDecl *complete_iface_decl = 422 GetCompleteObjCInterface(original_iface_decl); 423 424 if (complete_iface_decl && (complete_iface_decl != original_iface_decl)) { 425 original.decl = complete_iface_decl; 426 original.ctx = &complete_iface_decl->getASTContext(); 427 428 m_ast_importer_sp->SetDeclOrigin(context_decl, complete_iface_decl); 429 } 430 } 431 432 if (TagDecl *original_tag_decl = dyn_cast<TagDecl>(original.decl)) { 433 ExternalASTSource *external_source = original.ctx->getExternalSource(); 434 435 if (external_source) 436 external_source->CompleteType(original_tag_decl); 437 } 438 439 const DeclContext *original_decl_context = 440 dyn_cast<DeclContext>(original.decl); 441 442 if (!original_decl_context) 443 return; 444 445 // Indicates whether we skipped any Decls of the original DeclContext. 446 bool SkippedDecls = false; 447 for (Decl *decl : original_decl_context->decls()) { 448 // The predicate function returns true if the passed declaration kind is 449 // the one we are looking for. 450 // See clang::ExternalASTSource::FindExternalLexicalDecls() 451 if (predicate(decl->getKind())) { 452 if (log) { 453 std::string ast_dump = ClangUtil::DumpDecl(decl); 454 if (const NamedDecl *context_named_decl = 455 dyn_cast<NamedDecl>(context_decl)) 456 LLDB_LOG(log, " FELD Adding [to {0}Decl {1}] lexical {2}Decl {3}", 457 context_named_decl->getDeclKindName(), 458 context_named_decl->getName(), decl->getDeclKindName(), 459 ast_dump); 460 else 461 LLDB_LOG(log, " FELD Adding lexical {0}Decl {1}", 462 decl->getDeclKindName(), ast_dump); 463 } 464 465 Decl *copied_decl = CopyDecl(decl); 466 467 if (!copied_decl) 468 continue; 469 470 // FIXME: We should add the copied decl to the 'decls' list. This would 471 // add the copied Decl into the DeclContext and make sure that we 472 // correctly propagate that we added some Decls back to Clang. 473 // By leaving 'decls' empty we incorrectly return false from 474 // DeclContext::LoadLexicalDeclsFromExternalStorage which might cause 475 // lookup issues later on. 476 // We can't just add them for now as the ASTImporter already added the 477 // decl into the DeclContext and this would add it twice. 478 479 if (FieldDecl *copied_field = dyn_cast<FieldDecl>(copied_decl)) { 480 QualType copied_field_type = copied_field->getType(); 481 482 m_ast_importer_sp->RequireCompleteType(copied_field_type); 483 } 484 } else { 485 SkippedDecls = true; 486 } 487 } 488 489 // CopyDecl may build a lookup table which may set up ExternalLexicalStorage 490 // to false. However, since we skipped some of the external Decls we must 491 // set it back! 492 if (SkippedDecls) { 493 decl_context->setHasExternalLexicalStorage(true); 494 // This sets HasLazyExternalLexicalLookups to true. By setting this bit we 495 // ensure that the lookup table is rebuilt, which means the external source 496 // is consulted again when a clang::DeclContext::lookup is called. 497 const_cast<DeclContext *>(decl_context)->setMustBuildLookupTable(); 498 } 499 } 500 501 void ClangASTSource::FindExternalVisibleDecls(NameSearchContext &context) { 502 assert(m_ast_context); 503 504 const ConstString name(context.m_decl_name.getAsString().c_str()); 505 506 Log *log = GetLog(LLDBLog::Expressions); 507 508 if (log) { 509 if (!context.m_decl_context) 510 LLDB_LOG(log, 511 "ClangASTSource::FindExternalVisibleDecls on " 512 "(ASTContext*){0:x} '{1}' for '{2}' in a NULL DeclContext", 513 m_ast_context, m_clang_ast_context->getDisplayName(), name); 514 else if (const NamedDecl *context_named_decl = 515 dyn_cast<NamedDecl>(context.m_decl_context)) 516 LLDB_LOG(log, 517 "ClangASTSource::FindExternalVisibleDecls on " 518 "(ASTContext*){0:x} '{1}' for '{2}' in '{3}'", 519 m_ast_context, m_clang_ast_context->getDisplayName(), name, 520 context_named_decl->getName()); 521 else 522 LLDB_LOG(log, 523 "ClangASTSource::FindExternalVisibleDecls on " 524 "(ASTContext*){0:x} '{1}' for '{2}' in a '{3}'", 525 m_ast_context, m_clang_ast_context->getDisplayName(), name, 526 context.m_decl_context->getDeclKindName()); 527 } 528 529 if (isa<NamespaceDecl>(context.m_decl_context)) { 530 LookupInNamespace(context); 531 } else if (isa<ObjCInterfaceDecl>(context.m_decl_context)) { 532 FindObjCPropertyAndIvarDecls(context); 533 } else if (!isa<TranslationUnitDecl>(context.m_decl_context)) { 534 // we shouldn't be getting FindExternalVisibleDecls calls for these 535 return; 536 } else { 537 CompilerDeclContext namespace_decl; 538 539 LLDB_LOG(log, " CAS::FEVD Searching the root namespace"); 540 541 FindExternalVisibleDecls(context, lldb::ModuleSP(), namespace_decl); 542 } 543 544 if (!context.m_namespace_map->empty()) { 545 if (log && log->GetVerbose()) 546 LLDB_LOG(log, " CAS::FEVD Registering namespace map {0:x} ({1} entries)", 547 context.m_namespace_map.get(), context.m_namespace_map->size()); 548 549 NamespaceDecl *clang_namespace_decl = 550 AddNamespace(context, context.m_namespace_map); 551 552 if (clang_namespace_decl) 553 clang_namespace_decl->setHasExternalVisibleStorage(); 554 } 555 } 556 557 clang::Sema *ClangASTSource::getSema() { 558 return m_clang_ast_context->getSema(); 559 } 560 561 bool ClangASTSource::IgnoreName(const ConstString name, 562 bool ignore_all_dollar_names) { 563 static const ConstString id_name("id"); 564 static const ConstString Class_name("Class"); 565 566 if (m_ast_context->getLangOpts().ObjC) 567 if (name == id_name || name == Class_name) 568 return true; 569 570 StringRef name_string_ref = name.GetStringRef(); 571 572 // The ClangASTSource is not responsible for finding $-names. 573 return name_string_ref.empty() || 574 (ignore_all_dollar_names && name_string_ref.starts_with("$")) || 575 name_string_ref.starts_with("_$"); 576 } 577 578 void ClangASTSource::FindExternalVisibleDecls( 579 NameSearchContext &context, lldb::ModuleSP module_sp, 580 CompilerDeclContext &namespace_decl) { 581 assert(m_ast_context); 582 583 Log *log = GetLog(LLDBLog::Expressions); 584 585 SymbolContextList sc_list; 586 587 const ConstString name(context.m_decl_name.getAsString().c_str()); 588 if (IgnoreName(name, true)) 589 return; 590 591 if (!m_target) 592 return; 593 594 FillNamespaceMap(context, module_sp, namespace_decl); 595 596 if (context.m_found_type) 597 return; 598 599 lldb::TypeSP type_sp; 600 TypeResults results; 601 if (module_sp && namespace_decl) { 602 // Match the name in the specified decl context. 603 TypeQuery query(namespace_decl, name, TypeQueryOptions::e_find_one); 604 module_sp->FindTypes(query, results); 605 type_sp = results.GetFirstType(); 606 } else { 607 // Match the exact name of the type at the root level. 608 TypeQuery query(name.GetStringRef(), TypeQueryOptions::e_exact_match | 609 TypeQueryOptions::e_find_one); 610 m_target->GetImages().FindTypes(nullptr, query, results); 611 type_sp = results.GetFirstType(); 612 } 613 614 if (type_sp) { 615 if (log) { 616 const char *name_string = type_sp->GetName().GetCString(); 617 618 LLDB_LOG(log, " CAS::FEVD Matching type found for \"{0}\": {1}", name, 619 (name_string ? name_string : "<anonymous>")); 620 } 621 622 CompilerType full_type = type_sp->GetFullCompilerType(); 623 624 CompilerType copied_clang_type(GuardedCopyType(full_type)); 625 626 if (!copied_clang_type) { 627 LLDB_LOG(log, " CAS::FEVD - Couldn't export a type"); 628 } else { 629 630 context.AddTypeDecl(copied_clang_type); 631 632 context.m_found_type = true; 633 } 634 } 635 636 if (!context.m_found_type) { 637 // Try the modules next. 638 FindDeclInModules(context, name); 639 } 640 641 if (!context.m_found_type && m_ast_context->getLangOpts().ObjC) { 642 FindDeclInObjCRuntime(context, name); 643 } 644 } 645 646 void ClangASTSource::FillNamespaceMap( 647 NameSearchContext &context, lldb::ModuleSP module_sp, 648 const CompilerDeclContext &namespace_decl) { 649 const ConstString name(context.m_decl_name.getAsString().c_str()); 650 if (IgnoreName(name, true)) 651 return; 652 653 Log *log = GetLog(LLDBLog::Expressions); 654 655 if (module_sp && namespace_decl) { 656 CompilerDeclContext found_namespace_decl; 657 658 if (SymbolFile *symbol_file = module_sp->GetSymbolFile()) { 659 found_namespace_decl = symbol_file->FindNamespace(name, namespace_decl); 660 661 if (found_namespace_decl) { 662 context.m_namespace_map->push_back( 663 std::pair<lldb::ModuleSP, CompilerDeclContext>( 664 module_sp, found_namespace_decl)); 665 666 LLDB_LOG(log, " CAS::FEVD Found namespace {0} in module {1}", name, 667 module_sp->GetFileSpec().GetFilename()); 668 } 669 } 670 return; 671 } 672 673 for (lldb::ModuleSP image : m_target->GetImages().Modules()) { 674 if (!image) 675 continue; 676 677 CompilerDeclContext found_namespace_decl; 678 679 SymbolFile *symbol_file = image->GetSymbolFile(); 680 681 if (!symbol_file) 682 continue; 683 684 // If namespace_decl is not valid, 'FindNamespace' would look for 685 // any namespace called 'name' (ignoring parent contexts) and return 686 // the first one it finds. Thus if we're doing a qualified lookup only 687 // consider root namespaces. E.g., in an expression ::A::B::Foo, the 688 // lookup of ::A will result in a qualified lookup. Note, namespace 689 // disambiguation for function calls are handled separately in 690 // SearchFunctionsInSymbolContexts. 691 const bool find_root_namespaces = 692 context.m_decl_context && 693 context.m_decl_context->shouldUseQualifiedLookup(); 694 found_namespace_decl = symbol_file->FindNamespace( 695 name, namespace_decl, /* only root namespaces */ find_root_namespaces); 696 697 if (found_namespace_decl) { 698 context.m_namespace_map->push_back( 699 std::pair<lldb::ModuleSP, CompilerDeclContext>(image, 700 found_namespace_decl)); 701 702 LLDB_LOG(log, " CAS::FEVD Found namespace {0} in module {1}", name, 703 image->GetFileSpec().GetFilename()); 704 } 705 } 706 } 707 708 bool ClangASTSource::FindObjCMethodDeclsWithOrigin( 709 NameSearchContext &context, ObjCInterfaceDecl *original_interface_decl, 710 const char *log_info) { 711 const DeclarationName &decl_name(context.m_decl_name); 712 clang::ASTContext *original_ctx = &original_interface_decl->getASTContext(); 713 714 Selector original_selector; 715 716 if (decl_name.isObjCZeroArgSelector()) { 717 const IdentifierInfo *ident = 718 &original_ctx->Idents.get(decl_name.getAsString()); 719 original_selector = original_ctx->Selectors.getSelector(0, &ident); 720 } else if (decl_name.isObjCOneArgSelector()) { 721 const std::string &decl_name_string = decl_name.getAsString(); 722 std::string decl_name_string_without_colon(decl_name_string.c_str(), 723 decl_name_string.length() - 1); 724 const IdentifierInfo *ident = 725 &original_ctx->Idents.get(decl_name_string_without_colon); 726 original_selector = original_ctx->Selectors.getSelector(1, &ident); 727 } else { 728 SmallVector<const IdentifierInfo *, 4> idents; 729 730 clang::Selector sel = decl_name.getObjCSelector(); 731 732 unsigned num_args = sel.getNumArgs(); 733 734 for (unsigned i = 0; i != num_args; ++i) { 735 idents.push_back(&original_ctx->Idents.get(sel.getNameForSlot(i))); 736 } 737 738 original_selector = 739 original_ctx->Selectors.getSelector(num_args, idents.data()); 740 } 741 742 DeclarationName original_decl_name(original_selector); 743 744 llvm::SmallVector<NamedDecl *, 1> methods; 745 746 TypeSystemClang::GetCompleteDecl(original_ctx, original_interface_decl); 747 748 if (ObjCMethodDecl *instance_method_decl = 749 original_interface_decl->lookupInstanceMethod(original_selector)) { 750 methods.push_back(instance_method_decl); 751 } else if (ObjCMethodDecl *class_method_decl = 752 original_interface_decl->lookupClassMethod( 753 original_selector)) { 754 methods.push_back(class_method_decl); 755 } 756 757 if (methods.empty()) { 758 return false; 759 } 760 761 for (NamedDecl *named_decl : methods) { 762 if (!named_decl) 763 continue; 764 765 ObjCMethodDecl *result_method = dyn_cast<ObjCMethodDecl>(named_decl); 766 767 if (!result_method) 768 continue; 769 770 Decl *copied_decl = CopyDecl(result_method); 771 772 if (!copied_decl) 773 continue; 774 775 ObjCMethodDecl *copied_method_decl = dyn_cast<ObjCMethodDecl>(copied_decl); 776 777 if (!copied_method_decl) 778 continue; 779 780 Log *log = GetLog(LLDBLog::Expressions); 781 782 LLDB_LOG(log, " CAS::FOMD found ({0}) {1}", log_info, 783 ClangUtil::DumpDecl(copied_method_decl)); 784 785 context.AddNamedDecl(copied_method_decl); 786 } 787 788 return true; 789 } 790 791 void ClangASTSource::FindDeclInModules(NameSearchContext &context, 792 ConstString name) { 793 Log *log = GetLog(LLDBLog::Expressions); 794 795 std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor = 796 GetClangModulesDeclVendor(); 797 if (!modules_decl_vendor) 798 return; 799 800 bool append = false; 801 uint32_t max_matches = 1; 802 std::vector<clang::NamedDecl *> decls; 803 804 if (!modules_decl_vendor->FindDecls(name, append, max_matches, decls)) 805 return; 806 807 LLDB_LOG(log, " CAS::FEVD Matching entity found for \"{0}\" in the modules", 808 name); 809 810 clang::NamedDecl *const decl_from_modules = decls[0]; 811 812 if (llvm::isa<clang::TypeDecl>(decl_from_modules) || 813 llvm::isa<clang::ObjCContainerDecl>(decl_from_modules) || 814 llvm::isa<clang::EnumConstantDecl>(decl_from_modules)) { 815 clang::Decl *copied_decl = CopyDecl(decl_from_modules); 816 clang::NamedDecl *copied_named_decl = 817 copied_decl ? dyn_cast<clang::NamedDecl>(copied_decl) : nullptr; 818 819 if (!copied_named_decl) { 820 LLDB_LOG(log, " CAS::FEVD - Couldn't export a type from the modules"); 821 822 return; 823 } 824 825 context.AddNamedDecl(copied_named_decl); 826 827 context.m_found_type = true; 828 } 829 } 830 831 void ClangASTSource::FindDeclInObjCRuntime(NameSearchContext &context, 832 ConstString name) { 833 Log *log = GetLog(LLDBLog::Expressions); 834 835 lldb::ProcessSP process(m_target->GetProcessSP()); 836 837 if (!process) 838 return; 839 840 ObjCLanguageRuntime *language_runtime(ObjCLanguageRuntime::Get(*process)); 841 842 if (!language_runtime) 843 return; 844 845 DeclVendor *decl_vendor = language_runtime->GetDeclVendor(); 846 847 if (!decl_vendor) 848 return; 849 850 bool append = false; 851 uint32_t max_matches = 1; 852 std::vector<clang::NamedDecl *> decls; 853 854 auto *clang_decl_vendor = llvm::cast<ClangDeclVendor>(decl_vendor); 855 if (!clang_decl_vendor->FindDecls(name, append, max_matches, decls)) 856 return; 857 858 LLDB_LOG(log, " CAS::FEVD Matching type found for \"{0}\" in the runtime", 859 name); 860 861 clang::Decl *copied_decl = CopyDecl(decls[0]); 862 clang::NamedDecl *copied_named_decl = 863 copied_decl ? dyn_cast<clang::NamedDecl>(copied_decl) : nullptr; 864 865 if (!copied_named_decl) { 866 LLDB_LOG(log, " CAS::FEVD - Couldn't export a type from the runtime"); 867 868 return; 869 } 870 871 context.AddNamedDecl(copied_named_decl); 872 } 873 874 void ClangASTSource::FindObjCMethodDecls(NameSearchContext &context) { 875 Log *log = GetLog(LLDBLog::Expressions); 876 877 const DeclarationName &decl_name(context.m_decl_name); 878 const DeclContext *decl_ctx(context.m_decl_context); 879 880 const ObjCInterfaceDecl *interface_decl = 881 dyn_cast<ObjCInterfaceDecl>(decl_ctx); 882 883 if (!interface_decl) 884 return; 885 886 do { 887 ClangASTImporter::DeclOrigin original = m_ast_importer_sp->GetDeclOrigin(interface_decl); 888 889 if (!original.Valid()) 890 break; 891 892 ObjCInterfaceDecl *original_interface_decl = 893 dyn_cast<ObjCInterfaceDecl>(original.decl); 894 895 if (FindObjCMethodDeclsWithOrigin(context, original_interface_decl, 896 "at origin")) 897 return; // found it, no need to look any further 898 } while (false); 899 900 StreamString ss; 901 902 if (decl_name.isObjCZeroArgSelector()) { 903 ss.Printf("%s", decl_name.getAsString().c_str()); 904 } else if (decl_name.isObjCOneArgSelector()) { 905 ss.Printf("%s", decl_name.getAsString().c_str()); 906 } else { 907 clang::Selector sel = decl_name.getObjCSelector(); 908 909 for (unsigned i = 0, e = sel.getNumArgs(); i != e; ++i) { 910 llvm::StringRef r = sel.getNameForSlot(i); 911 ss.Printf("%s:", r.str().c_str()); 912 } 913 } 914 ss.Flush(); 915 916 if (ss.GetString().contains("$__lldb")) 917 return; // we don't need any results 918 919 ConstString selector_name(ss.GetString()); 920 921 LLDB_LOG(log, 922 "ClangASTSource::FindObjCMethodDecls on (ASTContext*){0:x} '{1}' " 923 "for selector [{2} {3}]", 924 m_ast_context, m_clang_ast_context->getDisplayName(), 925 interface_decl->getName(), selector_name); 926 SymbolContextList sc_list; 927 928 ModuleFunctionSearchOptions function_options; 929 function_options.include_symbols = false; 930 function_options.include_inlines = false; 931 932 std::string interface_name = interface_decl->getNameAsString(); 933 934 do { 935 StreamString ms; 936 ms.Printf("-[%s %s]", interface_name.c_str(), selector_name.AsCString()); 937 ms.Flush(); 938 ConstString instance_method_name(ms.GetString()); 939 940 sc_list.Clear(); 941 m_target->GetImages().FindFunctions(instance_method_name, 942 lldb::eFunctionNameTypeFull, 943 function_options, sc_list); 944 945 if (sc_list.GetSize()) 946 break; 947 948 ms.Clear(); 949 ms.Printf("+[%s %s]", interface_name.c_str(), selector_name.AsCString()); 950 ms.Flush(); 951 ConstString class_method_name(ms.GetString()); 952 953 sc_list.Clear(); 954 m_target->GetImages().FindFunctions(class_method_name, 955 lldb::eFunctionNameTypeFull, 956 function_options, sc_list); 957 958 if (sc_list.GetSize()) 959 break; 960 961 // Fall back and check for methods in categories. If we find methods this 962 // way, we need to check that they're actually in categories on the desired 963 // class. 964 965 SymbolContextList candidate_sc_list; 966 967 m_target->GetImages().FindFunctions(selector_name, 968 lldb::eFunctionNameTypeSelector, 969 function_options, candidate_sc_list); 970 971 for (const SymbolContext &candidate_sc : candidate_sc_list) { 972 if (!candidate_sc.function) 973 continue; 974 975 const char *candidate_name = candidate_sc.function->GetName().AsCString(); 976 977 const char *cursor = candidate_name; 978 979 if (*cursor != '+' && *cursor != '-') 980 continue; 981 982 ++cursor; 983 984 if (*cursor != '[') 985 continue; 986 987 ++cursor; 988 989 size_t interface_len = interface_name.length(); 990 991 if (strncmp(cursor, interface_name.c_str(), interface_len)) 992 continue; 993 994 cursor += interface_len; 995 996 if (*cursor == ' ' || *cursor == '(') 997 sc_list.Append(candidate_sc); 998 } 999 } while (false); 1000 1001 if (sc_list.GetSize()) { 1002 // We found a good function symbol. Use that. 1003 1004 for (const SymbolContext &sc : sc_list) { 1005 if (!sc.function) 1006 continue; 1007 1008 CompilerDeclContext function_decl_ctx = sc.function->GetDeclContext(); 1009 if (!function_decl_ctx) 1010 continue; 1011 1012 ObjCMethodDecl *method_decl = 1013 TypeSystemClang::DeclContextGetAsObjCMethodDecl(function_decl_ctx); 1014 1015 if (!method_decl) 1016 continue; 1017 1018 ObjCInterfaceDecl *found_interface_decl = 1019 method_decl->getClassInterface(); 1020 1021 if (!found_interface_decl) 1022 continue; 1023 1024 if (found_interface_decl->getName() == interface_decl->getName()) { 1025 Decl *copied_decl = CopyDecl(method_decl); 1026 1027 if (!copied_decl) 1028 continue; 1029 1030 ObjCMethodDecl *copied_method_decl = 1031 dyn_cast<ObjCMethodDecl>(copied_decl); 1032 1033 if (!copied_method_decl) 1034 continue; 1035 1036 LLDB_LOG(log, " CAS::FOMD found (in symbols)\n{0}", 1037 ClangUtil::DumpDecl(copied_method_decl)); 1038 1039 context.AddNamedDecl(copied_method_decl); 1040 } 1041 } 1042 1043 return; 1044 } 1045 1046 // Try the debug information. 1047 1048 do { 1049 ObjCInterfaceDecl *complete_interface_decl = GetCompleteObjCInterface( 1050 const_cast<ObjCInterfaceDecl *>(interface_decl)); 1051 1052 if (!complete_interface_decl) 1053 break; 1054 1055 // We found the complete interface. The runtime never needs to be queried 1056 // in this scenario. 1057 1058 DeclFromUser<const ObjCInterfaceDecl> complete_iface_decl( 1059 complete_interface_decl); 1060 1061 if (complete_interface_decl == interface_decl) 1062 break; // already checked this one 1063 1064 LLDB_LOG(log, 1065 "CAS::FOPD trying origin " 1066 "(ObjCInterfaceDecl*){0:x}/(ASTContext*){1:x}...", 1067 complete_interface_decl, &complete_iface_decl->getASTContext()); 1068 1069 FindObjCMethodDeclsWithOrigin(context, complete_interface_decl, 1070 "in debug info"); 1071 1072 return; 1073 } while (false); 1074 1075 do { 1076 // Check the modules only if the debug information didn't have a complete 1077 // interface. 1078 1079 if (std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor = 1080 GetClangModulesDeclVendor()) { 1081 ConstString interface_name(interface_decl->getNameAsString().c_str()); 1082 bool append = false; 1083 uint32_t max_matches = 1; 1084 std::vector<clang::NamedDecl *> decls; 1085 1086 if (!modules_decl_vendor->FindDecls(interface_name, append, max_matches, 1087 decls)) 1088 break; 1089 1090 ObjCInterfaceDecl *interface_decl_from_modules = 1091 dyn_cast<ObjCInterfaceDecl>(decls[0]); 1092 1093 if (!interface_decl_from_modules) 1094 break; 1095 1096 if (FindObjCMethodDeclsWithOrigin(context, interface_decl_from_modules, 1097 "in modules")) 1098 return; 1099 } 1100 } while (false); 1101 1102 do { 1103 // Check the runtime only if the debug information didn't have a complete 1104 // interface and the modules don't get us anywhere. 1105 1106 lldb::ProcessSP process(m_target->GetProcessSP()); 1107 1108 if (!process) 1109 break; 1110 1111 ObjCLanguageRuntime *language_runtime(ObjCLanguageRuntime::Get(*process)); 1112 1113 if (!language_runtime) 1114 break; 1115 1116 DeclVendor *decl_vendor = language_runtime->GetDeclVendor(); 1117 1118 if (!decl_vendor) 1119 break; 1120 1121 ConstString interface_name(interface_decl->getNameAsString().c_str()); 1122 bool append = false; 1123 uint32_t max_matches = 1; 1124 std::vector<clang::NamedDecl *> decls; 1125 1126 auto *clang_decl_vendor = llvm::cast<ClangDeclVendor>(decl_vendor); 1127 if (!clang_decl_vendor->FindDecls(interface_name, append, max_matches, 1128 decls)) 1129 break; 1130 1131 ObjCInterfaceDecl *runtime_interface_decl = 1132 dyn_cast<ObjCInterfaceDecl>(decls[0]); 1133 1134 if (!runtime_interface_decl) 1135 break; 1136 1137 FindObjCMethodDeclsWithOrigin(context, runtime_interface_decl, 1138 "in runtime"); 1139 } while (false); 1140 } 1141 1142 bool ClangASTSource::FindObjCPropertyAndIvarDeclsWithOrigin( 1143 NameSearchContext &context, 1144 DeclFromUser<const ObjCInterfaceDecl> &origin_iface_decl) { 1145 Log *log = GetLog(LLDBLog::Expressions); 1146 1147 if (origin_iface_decl.IsInvalid()) 1148 return false; 1149 1150 std::string name_str = context.m_decl_name.getAsString(); 1151 StringRef name(name_str); 1152 IdentifierInfo &name_identifier( 1153 origin_iface_decl->getASTContext().Idents.get(name)); 1154 1155 DeclFromUser<ObjCPropertyDecl> origin_property_decl( 1156 origin_iface_decl->FindPropertyDeclaration( 1157 &name_identifier, ObjCPropertyQueryKind::OBJC_PR_query_instance)); 1158 1159 bool found = false; 1160 1161 if (origin_property_decl.IsValid()) { 1162 DeclFromParser<ObjCPropertyDecl> parser_property_decl( 1163 origin_property_decl.Import(m_ast_context, *m_ast_importer_sp)); 1164 if (parser_property_decl.IsValid()) { 1165 LLDB_LOG(log, " CAS::FOPD found\n{0}", 1166 ClangUtil::DumpDecl(parser_property_decl.decl)); 1167 1168 context.AddNamedDecl(parser_property_decl.decl); 1169 found = true; 1170 } 1171 } 1172 1173 DeclFromUser<ObjCIvarDecl> origin_ivar_decl( 1174 origin_iface_decl->getIvarDecl(&name_identifier)); 1175 1176 if (origin_ivar_decl.IsValid()) { 1177 DeclFromParser<ObjCIvarDecl> parser_ivar_decl( 1178 origin_ivar_decl.Import(m_ast_context, *m_ast_importer_sp)); 1179 if (parser_ivar_decl.IsValid()) { 1180 LLDB_LOG(log, " CAS::FOPD found\n{0}", 1181 ClangUtil::DumpDecl(parser_ivar_decl.decl)); 1182 1183 context.AddNamedDecl(parser_ivar_decl.decl); 1184 found = true; 1185 } 1186 } 1187 1188 return found; 1189 } 1190 1191 void ClangASTSource::FindObjCPropertyAndIvarDecls(NameSearchContext &context) { 1192 Log *log = GetLog(LLDBLog::Expressions); 1193 1194 DeclFromParser<const ObjCInterfaceDecl> parser_iface_decl( 1195 cast<ObjCInterfaceDecl>(context.m_decl_context)); 1196 DeclFromUser<const ObjCInterfaceDecl> origin_iface_decl( 1197 parser_iface_decl.GetOrigin(*m_ast_importer_sp)); 1198 1199 ConstString class_name(parser_iface_decl->getNameAsString().c_str()); 1200 1201 LLDB_LOG(log, 1202 "ClangASTSource::FindObjCPropertyAndIvarDecls on " 1203 "(ASTContext*){0:x} '{1}' for '{2}.{3}'", 1204 m_ast_context, m_clang_ast_context->getDisplayName(), 1205 parser_iface_decl->getName(), context.m_decl_name.getAsString()); 1206 1207 if (FindObjCPropertyAndIvarDeclsWithOrigin(context, origin_iface_decl)) 1208 return; 1209 1210 LLDB_LOG(log, 1211 "CAS::FOPD couldn't find the property on origin " 1212 "(ObjCInterfaceDecl*){0:x}/(ASTContext*){1:x}, searching " 1213 "elsewhere...", 1214 origin_iface_decl.decl, &origin_iface_decl->getASTContext()); 1215 1216 SymbolContext null_sc; 1217 TypeList type_list; 1218 1219 do { 1220 ObjCInterfaceDecl *complete_interface_decl = GetCompleteObjCInterface( 1221 const_cast<ObjCInterfaceDecl *>(parser_iface_decl.decl)); 1222 1223 if (!complete_interface_decl) 1224 break; 1225 1226 // We found the complete interface. The runtime never needs to be queried 1227 // in this scenario. 1228 1229 DeclFromUser<const ObjCInterfaceDecl> complete_iface_decl( 1230 complete_interface_decl); 1231 1232 if (complete_iface_decl.decl == origin_iface_decl.decl) 1233 break; // already checked this one 1234 1235 LLDB_LOG(log, 1236 "CAS::FOPD trying origin " 1237 "(ObjCInterfaceDecl*){0:x}/(ASTContext*){1:x}...", 1238 complete_iface_decl.decl, &complete_iface_decl->getASTContext()); 1239 1240 FindObjCPropertyAndIvarDeclsWithOrigin(context, complete_iface_decl); 1241 1242 return; 1243 } while (false); 1244 1245 do { 1246 // Check the modules only if the debug information didn't have a complete 1247 // interface. 1248 1249 std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor = 1250 GetClangModulesDeclVendor(); 1251 1252 if (!modules_decl_vendor) 1253 break; 1254 1255 bool append = false; 1256 uint32_t max_matches = 1; 1257 std::vector<clang::NamedDecl *> decls; 1258 1259 if (!modules_decl_vendor->FindDecls(class_name, append, max_matches, decls)) 1260 break; 1261 1262 DeclFromUser<const ObjCInterfaceDecl> interface_decl_from_modules( 1263 dyn_cast<ObjCInterfaceDecl>(decls[0])); 1264 1265 if (!interface_decl_from_modules.IsValid()) 1266 break; 1267 1268 LLDB_LOG(log, 1269 "CAS::FOPD[{0:x}] trying module " 1270 "(ObjCInterfaceDecl*){0:x}/(ASTContext*){1:x}...", 1271 interface_decl_from_modules.decl, 1272 &interface_decl_from_modules->getASTContext()); 1273 1274 if (FindObjCPropertyAndIvarDeclsWithOrigin(context, 1275 interface_decl_from_modules)) 1276 return; 1277 } while (false); 1278 1279 do { 1280 // Check the runtime only if the debug information didn't have a complete 1281 // interface and nothing was in the modules. 1282 1283 lldb::ProcessSP process(m_target->GetProcessSP()); 1284 1285 if (!process) 1286 return; 1287 1288 ObjCLanguageRuntime *language_runtime(ObjCLanguageRuntime::Get(*process)); 1289 1290 if (!language_runtime) 1291 return; 1292 1293 DeclVendor *decl_vendor = language_runtime->GetDeclVendor(); 1294 1295 if (!decl_vendor) 1296 break; 1297 1298 bool append = false; 1299 uint32_t max_matches = 1; 1300 std::vector<clang::NamedDecl *> decls; 1301 1302 auto *clang_decl_vendor = llvm::cast<ClangDeclVendor>(decl_vendor); 1303 if (!clang_decl_vendor->FindDecls(class_name, append, max_matches, decls)) 1304 break; 1305 1306 DeclFromUser<const ObjCInterfaceDecl> interface_decl_from_runtime( 1307 dyn_cast<ObjCInterfaceDecl>(decls[0])); 1308 1309 if (!interface_decl_from_runtime.IsValid()) 1310 break; 1311 1312 LLDB_LOG(log, 1313 "CAS::FOPD[{0:x}] trying runtime " 1314 "(ObjCInterfaceDecl*){0:x}/(ASTContext*){1:x}...", 1315 interface_decl_from_runtime.decl, 1316 &interface_decl_from_runtime->getASTContext()); 1317 1318 if (FindObjCPropertyAndIvarDeclsWithOrigin(context, 1319 interface_decl_from_runtime)) 1320 return; 1321 } while (false); 1322 } 1323 1324 void ClangASTSource::LookupInNamespace(NameSearchContext &context) { 1325 const NamespaceDecl *namespace_context = 1326 dyn_cast<NamespaceDecl>(context.m_decl_context); 1327 1328 Log *log = GetLog(LLDBLog::Expressions); 1329 1330 ClangASTImporter::NamespaceMapSP namespace_map = 1331 m_ast_importer_sp->GetNamespaceMap(namespace_context); 1332 1333 LLDB_LOGV(log, " CAS::FEVD Inspecting namespace map {0:x} ({1} entries)", 1334 namespace_map.get(), namespace_map->size()); 1335 1336 if (!namespace_map) 1337 return; 1338 1339 for (ClangASTImporter::NamespaceMap::iterator i = namespace_map->begin(), 1340 e = namespace_map->end(); 1341 i != e; ++i) { 1342 LLDB_LOG(log, " CAS::FEVD Searching namespace {0} in module {1}", 1343 i->second.GetName(), i->first->GetFileSpec().GetFilename()); 1344 1345 FindExternalVisibleDecls(context, i->first, i->second); 1346 } 1347 } 1348 1349 bool ClangASTSource::layoutRecordType( 1350 const RecordDecl *record, uint64_t &size, uint64_t &alignment, 1351 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &field_offsets, 1352 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> 1353 &base_offsets, 1354 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> 1355 &virtual_base_offsets) { 1356 return m_ast_importer_sp->importRecordLayoutFromOrigin( 1357 record, size, alignment, field_offsets, base_offsets, 1358 virtual_base_offsets); 1359 } 1360 1361 void ClangASTSource::CompleteNamespaceMap( 1362 ClangASTImporter::NamespaceMapSP &namespace_map, ConstString name, 1363 ClangASTImporter::NamespaceMapSP &parent_map) const { 1364 1365 Log *log = GetLog(LLDBLog::Expressions); 1366 1367 if (log) { 1368 if (parent_map && parent_map->size()) 1369 LLDB_LOG(log, 1370 "CompleteNamespaceMap on (ASTContext*){0:x} '{1}' Searching " 1371 "for namespace {2} in namespace {3}", 1372 m_ast_context, m_clang_ast_context->getDisplayName(), name, 1373 parent_map->begin()->second.GetName()); 1374 else 1375 LLDB_LOG(log, 1376 "CompleteNamespaceMap on (ASTContext*){0} '{1}' Searching " 1377 "for namespace {2}", 1378 m_ast_context, m_clang_ast_context->getDisplayName(), name); 1379 } 1380 1381 if (parent_map) { 1382 for (ClangASTImporter::NamespaceMap::iterator i = parent_map->begin(), 1383 e = parent_map->end(); 1384 i != e; ++i) { 1385 CompilerDeclContext found_namespace_decl; 1386 1387 lldb::ModuleSP module_sp = i->first; 1388 CompilerDeclContext module_parent_namespace_decl = i->second; 1389 1390 SymbolFile *symbol_file = module_sp->GetSymbolFile(); 1391 1392 if (!symbol_file) 1393 continue; 1394 1395 found_namespace_decl = 1396 symbol_file->FindNamespace(name, module_parent_namespace_decl); 1397 1398 if (!found_namespace_decl) 1399 continue; 1400 1401 namespace_map->push_back(std::pair<lldb::ModuleSP, CompilerDeclContext>( 1402 module_sp, found_namespace_decl)); 1403 1404 LLDB_LOG(log, " CMN Found namespace {0} in module {1}", name, 1405 module_sp->GetFileSpec().GetFilename()); 1406 } 1407 } else { 1408 CompilerDeclContext null_namespace_decl; 1409 for (lldb::ModuleSP image : m_target->GetImages().Modules()) { 1410 if (!image) 1411 continue; 1412 1413 CompilerDeclContext found_namespace_decl; 1414 1415 SymbolFile *symbol_file = image->GetSymbolFile(); 1416 1417 if (!symbol_file) 1418 continue; 1419 1420 found_namespace_decl = 1421 symbol_file->FindNamespace(name, null_namespace_decl); 1422 1423 if (!found_namespace_decl) 1424 continue; 1425 1426 namespace_map->push_back(std::pair<lldb::ModuleSP, CompilerDeclContext>( 1427 image, found_namespace_decl)); 1428 1429 LLDB_LOG(log, " CMN[{0}] Found namespace {0} in module {1}", name, 1430 image->GetFileSpec().GetFilename()); 1431 } 1432 } 1433 } 1434 1435 NamespaceDecl *ClangASTSource::AddNamespace( 1436 NameSearchContext &context, 1437 ClangASTImporter::NamespaceMapSP &namespace_decls) { 1438 if (!namespace_decls) 1439 return nullptr; 1440 1441 const CompilerDeclContext &namespace_decl = namespace_decls->begin()->second; 1442 1443 clang::ASTContext *src_ast = 1444 TypeSystemClang::DeclContextGetTypeSystemClang(namespace_decl); 1445 if (!src_ast) 1446 return nullptr; 1447 clang::NamespaceDecl *src_namespace_decl = 1448 TypeSystemClang::DeclContextGetAsNamespaceDecl(namespace_decl); 1449 1450 if (!src_namespace_decl) 1451 return nullptr; 1452 1453 Decl *copied_decl = CopyDecl(src_namespace_decl); 1454 1455 if (!copied_decl) 1456 return nullptr; 1457 1458 NamespaceDecl *copied_namespace_decl = dyn_cast<NamespaceDecl>(copied_decl); 1459 1460 if (!copied_namespace_decl) 1461 return nullptr; 1462 1463 context.m_decls.push_back(copied_namespace_decl); 1464 1465 m_ast_importer_sp->RegisterNamespaceMap(copied_namespace_decl, 1466 namespace_decls); 1467 1468 return dyn_cast<NamespaceDecl>(copied_decl); 1469 } 1470 1471 clang::Decl *ClangASTSource::CopyDecl(Decl *src_decl) { 1472 return m_ast_importer_sp->CopyDecl(m_ast_context, src_decl); 1473 } 1474 1475 ClangASTImporter::DeclOrigin ClangASTSource::GetDeclOrigin(const clang::Decl *decl) { 1476 return m_ast_importer_sp->GetDeclOrigin(decl); 1477 } 1478 1479 CompilerType ClangASTSource::GuardedCopyType(const CompilerType &src_type) { 1480 auto ts = src_type.GetTypeSystem(); 1481 auto src_ast = ts.dyn_cast_or_null<TypeSystemClang>(); 1482 if (!src_ast) 1483 return {}; 1484 1485 QualType copied_qual_type = ClangUtil::GetQualType( 1486 m_ast_importer_sp->CopyType(*m_clang_ast_context, src_type)); 1487 1488 if (copied_qual_type.getAsOpaquePtr() && 1489 copied_qual_type->getCanonicalTypeInternal().isNull()) 1490 // this shouldn't happen, but we're hardening because the AST importer 1491 // seems to be generating bad types on occasion. 1492 return {}; 1493 1494 return m_clang_ast_context->GetType(copied_qual_type); 1495 } 1496 1497 std::shared_ptr<ClangModulesDeclVendor> 1498 ClangASTSource::GetClangModulesDeclVendor() { 1499 auto persistent_vars = llvm::cast<ClangPersistentVariables>( 1500 m_target->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC)); 1501 return persistent_vars->GetClangModulesDeclVendor(); 1502 } 1503