1 //===--- Mangle.cpp - Mangle C++ Names --------------------------*- 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 // Implements generic name mangling support for blocks and Objective-C. 10 // 11 //===----------------------------------------------------------------------===// 12 #include "clang/AST/Attr.h" 13 #include "clang/AST/ASTContext.h" 14 #include "clang/AST/Decl.h" 15 #include "clang/AST/DeclCXX.h" 16 #include "clang/AST/DeclObjC.h" 17 #include "clang/AST/DeclTemplate.h" 18 #include "clang/AST/ExprCXX.h" 19 #include "clang/AST/Mangle.h" 20 #include "clang/AST/VTableBuilder.h" 21 #include "clang/Basic/ABI.h" 22 #include "clang/Basic/SourceManager.h" 23 #include "clang/Basic/TargetInfo.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/IR/DataLayout.h" 26 #include "llvm/IR/Mangler.h" 27 #include "llvm/Support/ErrorHandling.h" 28 #include "llvm/Support/Format.h" 29 #include "llvm/Support/raw_ostream.h" 30 31 using namespace clang; 32 33 // FIXME: For blocks we currently mimic GCC's mangling scheme, which leaves 34 // much to be desired. Come up with a better mangling scheme. 35 36 static void mangleFunctionBlock(MangleContext &Context, 37 StringRef Outer, 38 const BlockDecl *BD, 39 raw_ostream &Out) { 40 unsigned discriminator = Context.getBlockId(BD, true); 41 if (discriminator == 0) 42 Out << "__" << Outer << "_block_invoke"; 43 else 44 Out << "__" << Outer << "_block_invoke_" << discriminator+1; 45 } 46 47 void MangleContext::anchor() { } 48 49 enum CCMangling { 50 CCM_Other, 51 CCM_Fast, 52 CCM_RegCall, 53 CCM_Vector, 54 CCM_Std, 55 CCM_WasmMainArgcArgv 56 }; 57 58 static bool isExternC(const NamedDecl *ND) { 59 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) 60 return FD->isExternC(); 61 if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) 62 return VD->isExternC(); 63 return false; 64 } 65 66 static CCMangling getCallingConvMangling(const ASTContext &Context, 67 const NamedDecl *ND) { 68 const TargetInfo &TI = Context.getTargetInfo(); 69 const llvm::Triple &Triple = TI.getTriple(); 70 71 // On wasm, the argc/argv form of "main" is renamed so that the startup code 72 // can call it with the correct function signature. 73 if (Triple.isWasm()) 74 if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) 75 if (FD->isMain() && FD->getNumParams() == 2) 76 return CCM_WasmMainArgcArgv; 77 78 if (!Triple.isOSWindows() || !Triple.isX86()) 79 return CCM_Other; 80 81 if (Context.getLangOpts().CPlusPlus && !isExternC(ND) && 82 TI.getCXXABI() == TargetCXXABI::Microsoft) 83 return CCM_Other; 84 85 const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND); 86 if (!FD) 87 return CCM_Other; 88 QualType T = FD->getType(); 89 90 const FunctionType *FT = T->castAs<FunctionType>(); 91 92 CallingConv CC = FT->getCallConv(); 93 switch (CC) { 94 default: 95 return CCM_Other; 96 case CC_X86FastCall: 97 return CCM_Fast; 98 case CC_X86StdCall: 99 return CCM_Std; 100 case CC_X86VectorCall: 101 return CCM_Vector; 102 } 103 } 104 105 bool MangleContext::shouldMangleDeclName(const NamedDecl *D) { 106 const ASTContext &ASTContext = getASTContext(); 107 108 CCMangling CC = getCallingConvMangling(ASTContext, D); 109 if (CC != CCM_Other) 110 return true; 111 112 // If the declaration has an owning module for linkage purposes that needs to 113 // be mangled, we must mangle its name. 114 if (!D->hasExternalFormalLinkage() && D->getOwningModuleForLinkage()) 115 return true; 116 117 // C functions with internal linkage have to be mangled with option 118 // -funique-internal-linkage-names. 119 if (!getASTContext().getLangOpts().CPlusPlus && 120 isUniqueInternalLinkageDecl(D)) 121 return true; 122 123 // In C, functions with no attributes never need to be mangled. Fastpath them. 124 if (!getASTContext().getLangOpts().CPlusPlus && !D->hasAttrs()) 125 return false; 126 127 // Any decl can be declared with __asm("foo") on it, and this takes precedence 128 // over all other naming in the .o file. 129 if (D->hasAttr<AsmLabelAttr>()) 130 return true; 131 132 // Declarations that don't have identifier names always need to be mangled. 133 if (isa<MSGuidDecl>(D)) 134 return true; 135 136 return shouldMangleCXXName(D); 137 } 138 139 void MangleContext::mangleName(GlobalDecl GD, raw_ostream &Out) { 140 const ASTContext &ASTContext = getASTContext(); 141 const NamedDecl *D = cast<NamedDecl>(GD.getDecl()); 142 143 // Any decl can be declared with __asm("foo") on it, and this takes precedence 144 // over all other naming in the .o file. 145 if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) { 146 // If we have an asm name, then we use it as the mangling. 147 148 // If the label isn't literal, or if this is an alias for an LLVM intrinsic, 149 // do not add a "\01" prefix. 150 if (!ALA->getIsLiteralLabel() || ALA->getLabel().starts_with("llvm.")) { 151 Out << ALA->getLabel(); 152 return; 153 } 154 155 // Adding the prefix can cause problems when one file has a "foo" and 156 // another has a "\01foo". That is known to happen on ELF with the 157 // tricks normally used for producing aliases (PR9177). Fortunately the 158 // llvm mangler on ELF is a nop, so we can just avoid adding the \01 159 // marker. 160 StringRef UserLabelPrefix = 161 getASTContext().getTargetInfo().getUserLabelPrefix(); 162 #ifndef NDEBUG 163 char GlobalPrefix = 164 llvm::DataLayout(getASTContext().getTargetInfo().getDataLayoutString()) 165 .getGlobalPrefix(); 166 assert((UserLabelPrefix.empty() && !GlobalPrefix) || 167 (UserLabelPrefix.size() == 1 && UserLabelPrefix[0] == GlobalPrefix)); 168 #endif 169 if (!UserLabelPrefix.empty()) 170 Out << '\01'; // LLVM IR Marker for __asm("foo") 171 172 Out << ALA->getLabel(); 173 return; 174 } 175 176 if (auto *GD = dyn_cast<MSGuidDecl>(D)) 177 return mangleMSGuidDecl(GD, Out); 178 179 CCMangling CC = getCallingConvMangling(ASTContext, D); 180 181 if (CC == CCM_WasmMainArgcArgv) { 182 Out << "__main_argc_argv"; 183 return; 184 } 185 186 bool MCXX = shouldMangleCXXName(D); 187 const TargetInfo &TI = Context.getTargetInfo(); 188 if (CC == CCM_Other || (MCXX && TI.getCXXABI() == TargetCXXABI::Microsoft)) { 189 if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D)) 190 mangleObjCMethodNameAsSourceName(OMD, Out); 191 else 192 mangleCXXName(GD, Out); 193 return; 194 } 195 196 Out << '\01'; 197 if (CC == CCM_Std) 198 Out << '_'; 199 else if (CC == CCM_Fast) 200 Out << '@'; 201 else if (CC == CCM_RegCall) { 202 if (getASTContext().getLangOpts().RegCall4) 203 Out << "__regcall4__"; 204 else 205 Out << "__regcall3__"; 206 } 207 208 if (!MCXX) 209 Out << D->getIdentifier()->getName(); 210 else if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(D)) 211 mangleObjCMethodNameAsSourceName(OMD, Out); 212 else 213 mangleCXXName(GD, Out); 214 215 const FunctionDecl *FD = cast<FunctionDecl>(D); 216 const FunctionType *FT = FD->getType()->castAs<FunctionType>(); 217 const FunctionProtoType *Proto = dyn_cast<FunctionProtoType>(FT); 218 if (CC == CCM_Vector) 219 Out << '@'; 220 Out << '@'; 221 if (!Proto) { 222 Out << '0'; 223 return; 224 } 225 assert(!Proto->isVariadic()); 226 unsigned ArgWords = 0; 227 if (const CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(FD)) 228 if (MD->isImplicitObjectMemberFunction()) 229 ++ArgWords; 230 uint64_t DefaultPtrWidth = TI.getPointerWidth(LangAS::Default); 231 for (const auto &AT : Proto->param_types()) { 232 // If an argument type is incomplete there is no way to get its size to 233 // correctly encode into the mangling scheme. 234 // Follow GCCs behaviour by simply breaking out of the loop. 235 if (AT->isIncompleteType()) 236 break; 237 // Size should be aligned to pointer size. 238 ArgWords += llvm::alignTo(ASTContext.getTypeSize(AT), DefaultPtrWidth) / 239 DefaultPtrWidth; 240 } 241 Out << ((DefaultPtrWidth / 8) * ArgWords); 242 } 243 244 void MangleContext::mangleMSGuidDecl(const MSGuidDecl *GD, raw_ostream &Out) { 245 // For now, follow the MSVC naming convention for GUID objects on all 246 // targets. 247 MSGuidDecl::Parts P = GD->getParts(); 248 Out << llvm::format("_GUID_%08" PRIx32 "_%04" PRIx32 "_%04" PRIx32 "_", 249 P.Part1, P.Part2, P.Part3); 250 unsigned I = 0; 251 for (uint8_t C : P.Part4And5) { 252 Out << llvm::format("%02" PRIx8, C); 253 if (++I == 2) 254 Out << "_"; 255 } 256 } 257 258 void MangleContext::mangleGlobalBlock(const BlockDecl *BD, 259 const NamedDecl *ID, 260 raw_ostream &Out) { 261 unsigned discriminator = getBlockId(BD, false); 262 if (ID) { 263 if (shouldMangleDeclName(ID)) 264 mangleName(ID, Out); 265 else { 266 Out << ID->getIdentifier()->getName(); 267 } 268 } 269 if (discriminator == 0) 270 Out << "_block_invoke"; 271 else 272 Out << "_block_invoke_" << discriminator+1; 273 } 274 275 void MangleContext::mangleCtorBlock(const CXXConstructorDecl *CD, 276 CXXCtorType CT, const BlockDecl *BD, 277 raw_ostream &ResStream) { 278 SmallString<64> Buffer; 279 llvm::raw_svector_ostream Out(Buffer); 280 mangleName(GlobalDecl(CD, CT), Out); 281 mangleFunctionBlock(*this, Buffer, BD, ResStream); 282 } 283 284 void MangleContext::mangleDtorBlock(const CXXDestructorDecl *DD, 285 CXXDtorType DT, const BlockDecl *BD, 286 raw_ostream &ResStream) { 287 SmallString<64> Buffer; 288 llvm::raw_svector_ostream Out(Buffer); 289 mangleName(GlobalDecl(DD, DT), Out); 290 mangleFunctionBlock(*this, Buffer, BD, ResStream); 291 } 292 293 void MangleContext::mangleBlock(const DeclContext *DC, const BlockDecl *BD, 294 raw_ostream &Out) { 295 assert(!isa<CXXConstructorDecl>(DC) && !isa<CXXDestructorDecl>(DC)); 296 297 SmallString<64> Buffer; 298 llvm::raw_svector_ostream Stream(Buffer); 299 if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(DC)) { 300 mangleObjCMethodNameAsSourceName(Method, Stream); 301 } else { 302 assert((isa<NamedDecl>(DC) || isa<BlockDecl>(DC)) && 303 "expected a NamedDecl or BlockDecl"); 304 if (isa<BlockDecl>(DC)) 305 for (; DC && isa<BlockDecl>(DC); DC = DC->getParent()) 306 (void) getBlockId(cast<BlockDecl>(DC), true); 307 assert((isa<TranslationUnitDecl>(DC) || isa<NamedDecl>(DC)) && 308 "expected a TranslationUnitDecl or a NamedDecl"); 309 if (const auto *CD = dyn_cast<CXXConstructorDecl>(DC)) 310 mangleCtorBlock(CD, /*CT*/ Ctor_Complete, BD, Out); 311 else if (const auto *DD = dyn_cast<CXXDestructorDecl>(DC)) 312 mangleDtorBlock(DD, /*DT*/ Dtor_Complete, BD, Out); 313 else if (auto ND = dyn_cast<NamedDecl>(DC)) { 314 if (!shouldMangleDeclName(ND) && ND->getIdentifier()) 315 Stream << ND->getIdentifier()->getName(); 316 else { 317 // FIXME: We were doing a mangleUnqualifiedName() before, but that's 318 // a private member of a class that will soon itself be private to the 319 // Itanium C++ ABI object. What should we do now? Right now, I'm just 320 // calling the mangleName() method on the MangleContext; is there a 321 // better way? 322 mangleName(ND, Stream); 323 } 324 } 325 } 326 mangleFunctionBlock(*this, Buffer, BD, Out); 327 } 328 329 void MangleContext::mangleObjCMethodName(const ObjCMethodDecl *MD, 330 raw_ostream &OS, 331 bool includePrefixByte, 332 bool includeCategoryNamespace) { 333 if (getASTContext().getLangOpts().ObjCRuntime.isGNUFamily()) { 334 // This is the mangling we've always used on the GNU runtimes, but it 335 // has obvious collisions in the face of underscores within class 336 // names, category names, and selectors; maybe we should improve it. 337 338 OS << (MD->isClassMethod() ? "_c_" : "_i_") 339 << MD->getClassInterface()->getName() << '_'; 340 341 if (includeCategoryNamespace) { 342 if (auto category = MD->getCategory()) 343 OS << category->getName(); 344 } 345 OS << '_'; 346 347 auto selector = MD->getSelector(); 348 for (unsigned slotIndex = 0, 349 numArgs = selector.getNumArgs(), 350 slotEnd = std::max(numArgs, 1U); 351 slotIndex != slotEnd; ++slotIndex) { 352 if (auto name = selector.getIdentifierInfoForSlot(slotIndex)) 353 OS << name->getName(); 354 355 // Replace all the positions that would've been ':' with '_'. 356 // That's after each slot except that a unary selector doesn't 357 // end in ':'. 358 if (numArgs) 359 OS << '_'; 360 } 361 362 return; 363 } 364 365 // \01+[ContainerName(CategoryName) SelectorName] 366 if (includePrefixByte) { 367 OS << '\01'; 368 } 369 OS << (MD->isInstanceMethod() ? '-' : '+') << '['; 370 if (const auto *CID = MD->getCategory()) { 371 OS << CID->getClassInterface()->getName(); 372 if (includeCategoryNamespace) { 373 OS << '(' << *CID << ')'; 374 } 375 } else if (const auto *CD = 376 dyn_cast<ObjCContainerDecl>(MD->getDeclContext())) { 377 OS << CD->getName(); 378 } else { 379 llvm_unreachable("Unexpected ObjC method decl context"); 380 } 381 OS << ' '; 382 MD->getSelector().print(OS); 383 OS << ']'; 384 } 385 386 void MangleContext::mangleObjCMethodNameAsSourceName(const ObjCMethodDecl *MD, 387 raw_ostream &Out) { 388 SmallString<64> Name; 389 llvm::raw_svector_ostream OS(Name); 390 391 mangleObjCMethodName(MD, OS, /*includePrefixByte=*/false, 392 /*includeCategoryNamespace=*/true); 393 Out << OS.str().size() << OS.str(); 394 } 395 396 class ASTNameGenerator::Implementation { 397 std::unique_ptr<MangleContext> MC; 398 llvm::DataLayout DL; 399 400 public: 401 explicit Implementation(ASTContext &Ctx) 402 : MC(Ctx.createMangleContext()), 403 DL(Ctx.getTargetInfo().getDataLayoutString()) {} 404 405 bool writeName(const Decl *D, raw_ostream &OS) { 406 // First apply frontend mangling. 407 SmallString<128> FrontendBuf; 408 llvm::raw_svector_ostream FrontendBufOS(FrontendBuf); 409 if (auto *FD = dyn_cast<FunctionDecl>(D)) { 410 if (FD->isDependentContext()) 411 return true; 412 if (writeFuncOrVarName(FD, FrontendBufOS)) 413 return true; 414 } else if (auto *VD = dyn_cast<VarDecl>(D)) { 415 if (writeFuncOrVarName(VD, FrontendBufOS)) 416 return true; 417 } else if (auto *MD = dyn_cast<ObjCMethodDecl>(D)) { 418 MC->mangleObjCMethodName(MD, OS, /*includePrefixByte=*/false, 419 /*includeCategoryNamespace=*/true); 420 return false; 421 } else if (auto *ID = dyn_cast<ObjCInterfaceDecl>(D)) { 422 writeObjCClassName(ID, FrontendBufOS); 423 } else { 424 return true; 425 } 426 427 // Now apply backend mangling. 428 llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL); 429 return false; 430 } 431 432 std::string getName(const Decl *D) { 433 std::string Name; 434 { 435 llvm::raw_string_ostream OS(Name); 436 writeName(D, OS); 437 } 438 return Name; 439 } 440 441 enum ObjCKind { 442 ObjCClass, 443 ObjCMetaclass, 444 }; 445 446 static StringRef getClassSymbolPrefix(ObjCKind Kind, 447 const ASTContext &Context) { 448 if (Context.getLangOpts().ObjCRuntime.isGNUFamily()) 449 return Kind == ObjCMetaclass ? "_OBJC_METACLASS_" : "_OBJC_CLASS_"; 450 return Kind == ObjCMetaclass ? "OBJC_METACLASS_$_" : "OBJC_CLASS_$_"; 451 } 452 453 std::vector<std::string> getAllManglings(const ObjCContainerDecl *OCD) { 454 StringRef ClassName; 455 if (const auto *OID = dyn_cast<ObjCInterfaceDecl>(OCD)) 456 ClassName = OID->getObjCRuntimeNameAsString(); 457 else if (const auto *OID = dyn_cast<ObjCImplementationDecl>(OCD)) 458 ClassName = OID->getObjCRuntimeNameAsString(); 459 460 if (ClassName.empty()) 461 return {}; 462 463 auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string { 464 SmallString<40> Mangled; 465 auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext()); 466 llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL); 467 return std::string(Mangled); 468 }; 469 470 return { 471 Mangle(ObjCClass, ClassName), 472 Mangle(ObjCMetaclass, ClassName), 473 }; 474 } 475 476 std::vector<std::string> getAllManglings(const Decl *D) { 477 if (const auto *OCD = dyn_cast<ObjCContainerDecl>(D)) 478 return getAllManglings(OCD); 479 480 if (!(isa<CXXRecordDecl>(D) || isa<CXXMethodDecl>(D))) 481 return {}; 482 483 const NamedDecl *ND = cast<NamedDecl>(D); 484 485 ASTContext &Ctx = ND->getASTContext(); 486 std::unique_ptr<MangleContext> M(Ctx.createMangleContext()); 487 488 std::vector<std::string> Manglings; 489 490 auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) { 491 auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false, 492 /*IsCXXMethod=*/true); 493 auto CC = MD->getType()->castAs<FunctionProtoType>()->getCallConv(); 494 return CC == DefaultCC; 495 }; 496 497 if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) { 498 Manglings.emplace_back(getMangledStructor(CD, Ctor_Base)); 499 500 if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) 501 if (!CD->getParent()->isAbstract()) 502 Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete)); 503 504 if (Ctx.getTargetInfo().getCXXABI().isMicrosoft()) 505 if (CD->hasAttr<DLLExportAttr>() && CD->isDefaultConstructor()) 506 if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0)) 507 Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure)); 508 } else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) { 509 Manglings.emplace_back(getMangledStructor(DD, Dtor_Base)); 510 if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) { 511 Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete)); 512 if (DD->isVirtual()) 513 Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting)); 514 } 515 } else if (const auto *MD = dyn_cast_or_null<CXXMethodDecl>(ND)) { 516 Manglings.emplace_back(getName(ND)); 517 if (MD->isVirtual()) 518 if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD)) 519 for (const auto &T : *TIV) 520 Manglings.emplace_back(getMangledThunk(MD, T)); 521 } 522 523 return Manglings; 524 } 525 526 private: 527 bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) { 528 if (MC->shouldMangleDeclName(D)) { 529 GlobalDecl GD; 530 if (const auto *CtorD = dyn_cast<CXXConstructorDecl>(D)) 531 GD = GlobalDecl(CtorD, Ctor_Complete); 532 else if (const auto *DtorD = dyn_cast<CXXDestructorDecl>(D)) 533 GD = GlobalDecl(DtorD, Dtor_Complete); 534 else if (D->hasAttr<CUDAGlobalAttr>()) 535 GD = GlobalDecl(cast<FunctionDecl>(D)); 536 else 537 GD = GlobalDecl(D); 538 MC->mangleName(GD, OS); 539 return false; 540 } else { 541 IdentifierInfo *II = D->getIdentifier(); 542 if (!II) 543 return true; 544 OS << II->getName(); 545 return false; 546 } 547 } 548 549 void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS) { 550 OS << getClassSymbolPrefix(ObjCClass, D->getASTContext()); 551 OS << D->getObjCRuntimeNameAsString(); 552 } 553 554 std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType) { 555 std::string FrontendBuf; 556 llvm::raw_string_ostream FOS(FrontendBuf); 557 558 GlobalDecl GD; 559 if (const auto *CD = dyn_cast_or_null<CXXConstructorDecl>(ND)) 560 GD = GlobalDecl(CD, static_cast<CXXCtorType>(StructorType)); 561 else if (const auto *DD = dyn_cast_or_null<CXXDestructorDecl>(ND)) 562 GD = GlobalDecl(DD, static_cast<CXXDtorType>(StructorType)); 563 MC->mangleName(GD, FOS); 564 565 std::string BackendBuf; 566 llvm::raw_string_ostream BOS(BackendBuf); 567 568 llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL); 569 570 return BOS.str(); 571 } 572 573 std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T) { 574 std::string FrontendBuf; 575 llvm::raw_string_ostream FOS(FrontendBuf); 576 577 MC->mangleThunk(MD, T, FOS); 578 579 std::string BackendBuf; 580 llvm::raw_string_ostream BOS(BackendBuf); 581 582 llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL); 583 584 return BOS.str(); 585 } 586 }; 587 588 ASTNameGenerator::ASTNameGenerator(ASTContext &Ctx) 589 : Impl(std::make_unique<Implementation>(Ctx)) {} 590 591 ASTNameGenerator::~ASTNameGenerator() {} 592 593 bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) { 594 return Impl->writeName(D, OS); 595 } 596 597 std::string ASTNameGenerator::getName(const Decl *D) { 598 return Impl->getName(D); 599 } 600 601 std::vector<std::string> ASTNameGenerator::getAllManglings(const Decl *D) { 602 return Impl->getAllManglings(D); 603 } 604