Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 1 | //===--- ItaniumMangle.cpp - Itanium C++ Name Mangling ----------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // Implements C++ name mangling according to the Itanium C++ ABI, |
| 11 | // which is used in GCC 3.2 and newer (and many compilers that are |
| 12 | // ABI-compatible with GCC): |
| 13 | // |
| 14 | // http://www.codesourcery.com/public/cxx-abi/abi.html |
| 15 | // |
| 16 | //===----------------------------------------------------------------------===// |
| 17 | #include "clang/AST/Mangle.h" |
| 18 | #include "clang/AST/ASTContext.h" |
| 19 | #include "clang/AST/Attr.h" |
| 20 | #include "clang/AST/Decl.h" |
| 21 | #include "clang/AST/DeclCXX.h" |
| 22 | #include "clang/AST/DeclObjC.h" |
| 23 | #include "clang/AST/DeclTemplate.h" |
| 24 | #include "clang/AST/ExprCXX.h" |
| 25 | #include "clang/AST/ExprObjC.h" |
| 26 | #include "clang/AST/TypeLoc.h" |
| 27 | #include "clang/Basic/ABI.h" |
| 28 | #include "clang/Basic/SourceManager.h" |
| 29 | #include "clang/Basic/TargetInfo.h" |
| 30 | #include "llvm/ADT/StringExtras.h" |
| 31 | #include "llvm/Support/ErrorHandling.h" |
| 32 | #include "llvm/Support/raw_ostream.h" |
| 33 | |
| 34 | #define MANGLE_CHECKER 0 |
| 35 | |
| 36 | #if MANGLE_CHECKER |
| 37 | #include <cxxabi.h> |
| 38 | #endif |
| 39 | |
| 40 | using namespace clang; |
| 41 | |
| 42 | namespace { |
| 43 | |
| 44 | /// \brief Retrieve the declaration context that should be used when mangling |
| 45 | /// the given declaration. |
| 46 | static const DeclContext *getEffectiveDeclContext(const Decl *D) { |
| 47 | // The ABI assumes that lambda closure types that occur within |
| 48 | // default arguments live in the context of the function. However, due to |
| 49 | // the way in which Clang parses and creates function declarations, this is |
| 50 | // not the case: the lambda closure type ends up living in the context |
| 51 | // where the function itself resides, because the function declaration itself |
| 52 | // had not yet been created. Fix the context here. |
| 53 | if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) { |
| 54 | if (RD->isLambda()) |
| 55 | if (ParmVarDecl *ContextParam |
| 56 | = dyn_cast_or_null<ParmVarDecl>(RD->getLambdaContextDecl())) |
| 57 | return ContextParam->getDeclContext(); |
| 58 | } |
| 59 | |
| 60 | return D->getDeclContext(); |
| 61 | } |
| 62 | |
| 63 | static const DeclContext *getEffectiveParentContext(const DeclContext *DC) { |
| 64 | return getEffectiveDeclContext(cast<Decl>(DC)); |
| 65 | } |
| 66 | |
| 67 | static const CXXRecordDecl *GetLocalClassDecl(const NamedDecl *ND) { |
| 68 | const DeclContext *DC = dyn_cast<DeclContext>(ND); |
| 69 | if (!DC) |
| 70 | DC = getEffectiveDeclContext(ND); |
| 71 | while (!DC->isNamespace() && !DC->isTranslationUnit()) { |
| 72 | const DeclContext *Parent = getEffectiveDeclContext(cast<Decl>(DC)); |
| 73 | if (isa<FunctionDecl>(Parent)) |
| 74 | return dyn_cast<CXXRecordDecl>(DC); |
| 75 | DC = Parent; |
| 76 | } |
| 77 | return 0; |
| 78 | } |
| 79 | |
| 80 | static const FunctionDecl *getStructor(const FunctionDecl *fn) { |
| 81 | if (const FunctionTemplateDecl *ftd = fn->getPrimaryTemplate()) |
| 82 | return ftd->getTemplatedDecl(); |
| 83 | |
| 84 | return fn; |
| 85 | } |
| 86 | |
| 87 | static const NamedDecl *getStructor(const NamedDecl *decl) { |
| 88 | const FunctionDecl *fn = dyn_cast_or_null<FunctionDecl>(decl); |
| 89 | return (fn ? getStructor(fn) : decl); |
| 90 | } |
| 91 | |
| 92 | static const unsigned UnknownArity = ~0U; |
| 93 | |
| 94 | class ItaniumMangleContext : public MangleContext { |
| 95 | llvm::DenseMap<const TagDecl *, uint64_t> AnonStructIds; |
| 96 | unsigned Discriminator; |
| 97 | llvm::DenseMap<const NamedDecl*, unsigned> Uniquifier; |
| 98 | |
| 99 | public: |
| 100 | explicit ItaniumMangleContext(ASTContext &Context, |
| 101 | DiagnosticsEngine &Diags) |
| 102 | : MangleContext(Context, Diags) { } |
| 103 | |
| 104 | uint64_t getAnonymousStructId(const TagDecl *TD) { |
| 105 | std::pair<llvm::DenseMap<const TagDecl *, |
| 106 | uint64_t>::iterator, bool> Result = |
| 107 | AnonStructIds.insert(std::make_pair(TD, AnonStructIds.size())); |
| 108 | return Result.first->second; |
| 109 | } |
| 110 | |
| 111 | void startNewFunction() { |
| 112 | MangleContext::startNewFunction(); |
| 113 | mangleInitDiscriminator(); |
| 114 | } |
| 115 | |
| 116 | /// @name Mangler Entry Points |
| 117 | /// @{ |
| 118 | |
| 119 | bool shouldMangleDeclName(const NamedDecl *D); |
| 120 | void mangleName(const NamedDecl *D, raw_ostream &); |
| 121 | void mangleThunk(const CXXMethodDecl *MD, |
| 122 | const ThunkInfo &Thunk, |
| 123 | raw_ostream &); |
| 124 | void mangleCXXDtorThunk(const CXXDestructorDecl *DD, CXXDtorType Type, |
| 125 | const ThisAdjustment &ThisAdjustment, |
| 126 | raw_ostream &); |
| 127 | void mangleReferenceTemporary(const VarDecl *D, |
| 128 | raw_ostream &); |
| 129 | void mangleCXXVTable(const CXXRecordDecl *RD, |
| 130 | raw_ostream &); |
| 131 | void mangleCXXVTT(const CXXRecordDecl *RD, |
| 132 | raw_ostream &); |
| 133 | void mangleCXXCtorVTable(const CXXRecordDecl *RD, int64_t Offset, |
| 134 | const CXXRecordDecl *Type, |
| 135 | raw_ostream &); |
| 136 | void mangleCXXRTTI(QualType T, raw_ostream &); |
| 137 | void mangleCXXRTTIName(QualType T, raw_ostream &); |
| 138 | void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type, |
| 139 | raw_ostream &); |
| 140 | void mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type, |
| 141 | raw_ostream &); |
| 142 | |
| 143 | void mangleItaniumGuardVariable(const VarDecl *D, raw_ostream &); |
| 144 | |
| 145 | void mangleInitDiscriminator() { |
| 146 | Discriminator = 0; |
| 147 | } |
| 148 | |
| 149 | bool getNextDiscriminator(const NamedDecl *ND, unsigned &disc) { |
| 150 | // Lambda closure types with external linkage (indicated by a |
| 151 | // non-zero lambda mangling number) have their own numbering scheme, so |
| 152 | // they do not need a discriminator. |
| 153 | if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(ND)) |
| 154 | if (RD->isLambda() && RD->getLambdaManglingNumber() > 0) |
| 155 | return false; |
| 156 | |
| 157 | unsigned &discriminator = Uniquifier[ND]; |
| 158 | if (!discriminator) |
| 159 | discriminator = ++Discriminator; |
| 160 | if (discriminator == 1) |
| 161 | return false; |
| 162 | disc = discriminator-2; |
| 163 | return true; |
| 164 | } |
| 165 | /// @} |
| 166 | }; |
| 167 | |
| 168 | /// CXXNameMangler - Manage the mangling of a single name. |
| 169 | class CXXNameMangler { |
| 170 | ItaniumMangleContext &Context; |
| 171 | raw_ostream &Out; |
| 172 | |
| 173 | /// The "structor" is the top-level declaration being mangled, if |
| 174 | /// that's not a template specialization; otherwise it's the pattern |
| 175 | /// for that specialization. |
| 176 | const NamedDecl *Structor; |
| 177 | unsigned StructorType; |
| 178 | |
| 179 | /// SeqID - The next subsitution sequence number. |
| 180 | unsigned SeqID; |
| 181 | |
| 182 | class FunctionTypeDepthState { |
| 183 | unsigned Bits; |
| 184 | |
| 185 | enum { InResultTypeMask = 1 }; |
| 186 | |
| 187 | public: |
| 188 | FunctionTypeDepthState() : Bits(0) {} |
| 189 | |
| 190 | /// The number of function types we're inside. |
| 191 | unsigned getDepth() const { |
| 192 | return Bits >> 1; |
| 193 | } |
| 194 | |
| 195 | /// True if we're in the return type of the innermost function type. |
| 196 | bool isInResultType() const { |
| 197 | return Bits & InResultTypeMask; |
| 198 | } |
| 199 | |
| 200 | FunctionTypeDepthState push() { |
| 201 | FunctionTypeDepthState tmp = *this; |
| 202 | Bits = (Bits & ~InResultTypeMask) + 2; |
| 203 | return tmp; |
| 204 | } |
| 205 | |
| 206 | void enterResultType() { |
| 207 | Bits |= InResultTypeMask; |
| 208 | } |
| 209 | |
| 210 | void leaveResultType() { |
| 211 | Bits &= ~InResultTypeMask; |
| 212 | } |
| 213 | |
| 214 | void pop(FunctionTypeDepthState saved) { |
| 215 | assert(getDepth() == saved.getDepth() + 1); |
| 216 | Bits = saved.Bits; |
| 217 | } |
| 218 | |
| 219 | } FunctionTypeDepth; |
| 220 | |
| 221 | llvm::DenseMap<uintptr_t, unsigned> Substitutions; |
| 222 | |
| 223 | ASTContext &getASTContext() const { return Context.getASTContext(); } |
| 224 | |
| 225 | public: |
| 226 | CXXNameMangler(ItaniumMangleContext &C, raw_ostream &Out_, |
| 227 | const NamedDecl *D = 0) |
| 228 | : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(0), |
| 229 | SeqID(0) { |
| 230 | // These can't be mangled without a ctor type or dtor type. |
| 231 | assert(!D || (!isa<CXXDestructorDecl>(D) && |
| 232 | !isa<CXXConstructorDecl>(D))); |
| 233 | } |
| 234 | CXXNameMangler(ItaniumMangleContext &C, raw_ostream &Out_, |
| 235 | const CXXConstructorDecl *D, CXXCtorType Type) |
| 236 | : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type), |
| 237 | SeqID(0) { } |
| 238 | CXXNameMangler(ItaniumMangleContext &C, raw_ostream &Out_, |
| 239 | const CXXDestructorDecl *D, CXXDtorType Type) |
| 240 | : Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type), |
| 241 | SeqID(0) { } |
| 242 | |
| 243 | #if MANGLE_CHECKER |
| 244 | ~CXXNameMangler() { |
| 245 | if (Out.str()[0] == '\01') |
| 246 | return; |
| 247 | |
| 248 | int status = 0; |
| 249 | char *result = abi::__cxa_demangle(Out.str().str().c_str(), 0, 0, &status); |
| 250 | assert(status == 0 && "Could not demangle mangled name!"); |
| 251 | free(result); |
| 252 | } |
| 253 | #endif |
| 254 | raw_ostream &getStream() { return Out; } |
| 255 | |
| 256 | void mangle(const NamedDecl *D, StringRef Prefix = "_Z"); |
| 257 | void mangleCallOffset(int64_t NonVirtual, int64_t Virtual); |
| 258 | void mangleNumber(const llvm::APSInt &I); |
| 259 | void mangleNumber(int64_t Number); |
| 260 | void mangleFloat(const llvm::APFloat &F); |
| 261 | void mangleFunctionEncoding(const FunctionDecl *FD); |
| 262 | void mangleName(const NamedDecl *ND); |
| 263 | void mangleType(QualType T); |
| 264 | void mangleNameOrStandardSubstitution(const NamedDecl *ND); |
| 265 | |
| 266 | private: |
| 267 | bool mangleSubstitution(const NamedDecl *ND); |
| 268 | bool mangleSubstitution(QualType T); |
| 269 | bool mangleSubstitution(TemplateName Template); |
| 270 | bool mangleSubstitution(uintptr_t Ptr); |
| 271 | |
| 272 | void mangleExistingSubstitution(QualType type); |
| 273 | void mangleExistingSubstitution(TemplateName name); |
| 274 | |
| 275 | bool mangleStandardSubstitution(const NamedDecl *ND); |
| 276 | |
| 277 | void addSubstitution(const NamedDecl *ND) { |
| 278 | ND = cast<NamedDecl>(ND->getCanonicalDecl()); |
| 279 | |
| 280 | addSubstitution(reinterpret_cast<uintptr_t>(ND)); |
| 281 | } |
| 282 | void addSubstitution(QualType T); |
| 283 | void addSubstitution(TemplateName Template); |
| 284 | void addSubstitution(uintptr_t Ptr); |
| 285 | |
| 286 | void mangleUnresolvedPrefix(NestedNameSpecifier *qualifier, |
| 287 | NamedDecl *firstQualifierLookup, |
| 288 | bool recursive = false); |
| 289 | void mangleUnresolvedName(NestedNameSpecifier *qualifier, |
| 290 | NamedDecl *firstQualifierLookup, |
| 291 | DeclarationName name, |
| 292 | unsigned KnownArity = UnknownArity); |
| 293 | |
| 294 | void mangleName(const TemplateDecl *TD, |
| 295 | const TemplateArgument *TemplateArgs, |
| 296 | unsigned NumTemplateArgs); |
| 297 | void mangleUnqualifiedName(const NamedDecl *ND) { |
| 298 | mangleUnqualifiedName(ND, ND->getDeclName(), UnknownArity); |
| 299 | } |
| 300 | void mangleUnqualifiedName(const NamedDecl *ND, DeclarationName Name, |
| 301 | unsigned KnownArity); |
| 302 | void mangleUnscopedName(const NamedDecl *ND); |
| 303 | void mangleUnscopedTemplateName(const TemplateDecl *ND); |
| 304 | void mangleUnscopedTemplateName(TemplateName); |
| 305 | void mangleSourceName(const IdentifierInfo *II); |
| 306 | void mangleLocalName(const NamedDecl *ND); |
| 307 | void mangleLambda(const CXXRecordDecl *Lambda); |
| 308 | void mangleNestedName(const NamedDecl *ND, const DeclContext *DC, |
| 309 | bool NoFunction=false); |
| 310 | void mangleNestedName(const TemplateDecl *TD, |
| 311 | const TemplateArgument *TemplateArgs, |
| 312 | unsigned NumTemplateArgs); |
| 313 | void manglePrefix(NestedNameSpecifier *qualifier); |
| 314 | void manglePrefix(const DeclContext *DC, bool NoFunction=false); |
| 315 | void manglePrefix(QualType type); |
| 316 | void mangleTemplatePrefix(const TemplateDecl *ND); |
| 317 | void mangleTemplatePrefix(TemplateName Template); |
| 318 | void mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity); |
| 319 | void mangleQualifiers(Qualifiers Quals); |
| 320 | void mangleRefQualifier(RefQualifierKind RefQualifier); |
| 321 | |
| 322 | void mangleObjCMethodName(const ObjCMethodDecl *MD); |
| 323 | |
| 324 | // Declare manglers for every type class. |
| 325 | #define ABSTRACT_TYPE(CLASS, PARENT) |
| 326 | #define NON_CANONICAL_TYPE(CLASS, PARENT) |
| 327 | #define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T); |
| 328 | #include "clang/AST/TypeNodes.def" |
| 329 | |
| 330 | void mangleType(const TagType*); |
| 331 | void mangleType(TemplateName); |
| 332 | void mangleBareFunctionType(const FunctionType *T, |
| 333 | bool MangleReturnType); |
| 334 | void mangleNeonVectorType(const VectorType *T); |
| 335 | |
| 336 | void mangleIntegerLiteral(QualType T, const llvm::APSInt &Value); |
| 337 | void mangleMemberExpr(const Expr *base, bool isArrow, |
| 338 | NestedNameSpecifier *qualifier, |
| 339 | NamedDecl *firstQualifierLookup, |
| 340 | DeclarationName name, |
| 341 | unsigned knownArity); |
| 342 | void mangleExpression(const Expr *E, unsigned Arity = UnknownArity); |
| 343 | void mangleCXXCtorType(CXXCtorType T); |
| 344 | void mangleCXXDtorType(CXXDtorType T); |
| 345 | |
| 346 | void mangleTemplateArgs(const ASTTemplateArgumentListInfo &TemplateArgs); |
| 347 | void mangleTemplateArgs(const TemplateArgument *TemplateArgs, |
| 348 | unsigned NumTemplateArgs); |
| 349 | void mangleTemplateArgs(const TemplateArgumentList &AL); |
| 350 | void mangleTemplateArg(TemplateArgument A); |
| 351 | |
| 352 | void mangleTemplateParameter(unsigned Index); |
| 353 | |
| 354 | void mangleFunctionParam(const ParmVarDecl *parm); |
| 355 | }; |
| 356 | |
| 357 | } |
| 358 | |
Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 359 | bool ItaniumMangleContext::shouldMangleDeclName(const NamedDecl *D) { |
| 360 | // In C, functions with no attributes never need to be mangled. Fastpath them. |
| 361 | if (!getASTContext().getLangOpts().CPlusPlus && !D->hasAttrs()) |
| 362 | return false; |
| 363 | |
| 364 | // Any decl can be declared with __asm("foo") on it, and this takes precedence |
| 365 | // over all other naming in the .o file. |
| 366 | if (D->hasAttr<AsmLabelAttr>()) |
| 367 | return true; |
| 368 | |
Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 369 | const FunctionDecl *FD = dyn_cast<FunctionDecl>(D); |
Rafael Espindola | d2fdd42 | 2013-02-14 01:47:04 +0000 | [diff] [blame] | 370 | if (FD) { |
| 371 | LanguageLinkage L = FD->getLanguageLinkage(); |
| 372 | // Overloadable functions need mangling. |
| 373 | if (FD->hasAttr<OverloadableAttr>()) |
| 374 | return true; |
| 375 | |
| 376 | // C functions and "main" are not mangled. |
| 377 | if (FD->isMain() || L == CLanguageLinkage) |
| 378 | return false; |
| 379 | |
| 380 | // C++ functions and those whose names are not a simple identifier need |
| 381 | // mangling. |
| 382 | if (!FD->getDeclName().isIdentifier() || L == CXXLanguageLinkage) |
| 383 | return true; |
Rafael Espindola | 747836e | 2013-02-14 03:31:26 +0000 | [diff] [blame^] | 384 | |
| 385 | // FIXME: Users assume they know the mangling of static functions |
| 386 | // declared in extern "C" contexts, so we cannot always mangle them. |
| 387 | // As an improvement, maybe we could mangle them only if they are actually |
| 388 | // overloaded. |
| 389 | const DeclContext *DC = FD->getDeclContext(); |
| 390 | if (!DC->isRecord() && |
| 391 | FD->getFirstDeclaration()->getDeclContext()->isExternCContext()) |
| 392 | return false; |
Rafael Espindola | d2fdd42 | 2013-02-14 01:47:04 +0000 | [diff] [blame] | 393 | } |
Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 394 | |
| 395 | // Otherwise, no mangling is done outside C++ mode. |
| 396 | if (!getASTContext().getLangOpts().CPlusPlus) |
| 397 | return false; |
| 398 | |
Rafael Espindola | d2fdd42 | 2013-02-14 01:47:04 +0000 | [diff] [blame] | 399 | const VarDecl *VD = dyn_cast<VarDecl>(D); |
| 400 | if (VD) { |
| 401 | // C variables are not mangled. |
| 402 | if (VD->isExternC()) |
| 403 | return false; |
| 404 | |
| 405 | // Variables at global scope with non-internal linkage are not mangled |
Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 406 | const DeclContext *DC = getEffectiveDeclContext(D); |
| 407 | // Check for extern variable declared locally. |
| 408 | if (DC->isFunctionOrMethod() && D->hasLinkage()) |
| 409 | while (!DC->isNamespace() && !DC->isTranslationUnit()) |
| 410 | DC = getEffectiveParentContext(DC); |
| 411 | if (DC->isTranslationUnit() && D->getLinkage() != InternalLinkage) |
| 412 | return false; |
| 413 | } |
| 414 | |
Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 415 | return true; |
| 416 | } |
| 417 | |
| 418 | void CXXNameMangler::mangle(const NamedDecl *D, StringRef Prefix) { |
| 419 | // Any decl can be declared with __asm("foo") on it, and this takes precedence |
| 420 | // over all other naming in the .o file. |
| 421 | if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) { |
| 422 | // If we have an asm name, then we use it as the mangling. |
| 423 | |
| 424 | // Adding the prefix can cause problems when one file has a "foo" and |
| 425 | // another has a "\01foo". That is known to happen on ELF with the |
| 426 | // tricks normally used for producing aliases (PR9177). Fortunately the |
| 427 | // llvm mangler on ELF is a nop, so we can just avoid adding the \01 |
| 428 | // marker. We also avoid adding the marker if this is an alias for an |
| 429 | // LLVM intrinsic. |
| 430 | StringRef UserLabelPrefix = |
| 431 | getASTContext().getTargetInfo().getUserLabelPrefix(); |
| 432 | if (!UserLabelPrefix.empty() && !ALA->getLabel().startswith("llvm.")) |
| 433 | Out << '\01'; // LLVM IR Marker for __asm("foo") |
| 434 | |
| 435 | Out << ALA->getLabel(); |
| 436 | return; |
| 437 | } |
| 438 | |
| 439 | // <mangled-name> ::= _Z <encoding> |
| 440 | // ::= <data name> |
| 441 | // ::= <special-name> |
| 442 | Out << Prefix; |
| 443 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) |
| 444 | mangleFunctionEncoding(FD); |
| 445 | else if (const VarDecl *VD = dyn_cast<VarDecl>(D)) |
| 446 | mangleName(VD); |
| 447 | else |
| 448 | mangleName(cast<FieldDecl>(D)); |
| 449 | } |
| 450 | |
| 451 | void CXXNameMangler::mangleFunctionEncoding(const FunctionDecl *FD) { |
| 452 | // <encoding> ::= <function name> <bare-function-type> |
| 453 | mangleName(FD); |
| 454 | |
| 455 | // Don't mangle in the type if this isn't a decl we should typically mangle. |
| 456 | if (!Context.shouldMangleDeclName(FD)) |
| 457 | return; |
| 458 | |
| 459 | // Whether the mangling of a function type includes the return type depends on |
| 460 | // the context and the nature of the function. The rules for deciding whether |
| 461 | // the return type is included are: |
| 462 | // |
| 463 | // 1. Template functions (names or types) have return types encoded, with |
| 464 | // the exceptions listed below. |
| 465 | // 2. Function types not appearing as part of a function name mangling, |
| 466 | // e.g. parameters, pointer types, etc., have return type encoded, with the |
| 467 | // exceptions listed below. |
| 468 | // 3. Non-template function names do not have return types encoded. |
| 469 | // |
| 470 | // The exceptions mentioned in (1) and (2) above, for which the return type is |
| 471 | // never included, are |
| 472 | // 1. Constructors. |
| 473 | // 2. Destructors. |
| 474 | // 3. Conversion operator functions, e.g. operator int. |
| 475 | bool MangleReturnType = false; |
| 476 | if (FunctionTemplateDecl *PrimaryTemplate = FD->getPrimaryTemplate()) { |
| 477 | if (!(isa<CXXConstructorDecl>(FD) || isa<CXXDestructorDecl>(FD) || |
| 478 | isa<CXXConversionDecl>(FD))) |
| 479 | MangleReturnType = true; |
| 480 | |
| 481 | // Mangle the type of the primary template. |
| 482 | FD = PrimaryTemplate->getTemplatedDecl(); |
| 483 | } |
| 484 | |
| 485 | mangleBareFunctionType(FD->getType()->getAs<FunctionType>(), |
| 486 | MangleReturnType); |
| 487 | } |
| 488 | |
| 489 | static const DeclContext *IgnoreLinkageSpecDecls(const DeclContext *DC) { |
| 490 | while (isa<LinkageSpecDecl>(DC)) { |
| 491 | DC = getEffectiveParentContext(DC); |
| 492 | } |
| 493 | |
| 494 | return DC; |
| 495 | } |
| 496 | |
| 497 | /// isStd - Return whether a given namespace is the 'std' namespace. |
| 498 | static bool isStd(const NamespaceDecl *NS) { |
| 499 | if (!IgnoreLinkageSpecDecls(getEffectiveParentContext(NS)) |
| 500 | ->isTranslationUnit()) |
| 501 | return false; |
| 502 | |
| 503 | const IdentifierInfo *II = NS->getOriginalNamespace()->getIdentifier(); |
| 504 | return II && II->isStr("std"); |
| 505 | } |
| 506 | |
| 507 | // isStdNamespace - Return whether a given decl context is a toplevel 'std' |
| 508 | // namespace. |
| 509 | static bool isStdNamespace(const DeclContext *DC) { |
| 510 | if (!DC->isNamespace()) |
| 511 | return false; |
| 512 | |
| 513 | return isStd(cast<NamespaceDecl>(DC)); |
| 514 | } |
| 515 | |
| 516 | static const TemplateDecl * |
| 517 | isTemplate(const NamedDecl *ND, const TemplateArgumentList *&TemplateArgs) { |
| 518 | // Check if we have a function template. |
| 519 | if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)){ |
| 520 | if (const TemplateDecl *TD = FD->getPrimaryTemplate()) { |
| 521 | TemplateArgs = FD->getTemplateSpecializationArgs(); |
| 522 | return TD; |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | // Check if we have a class template. |
| 527 | if (const ClassTemplateSpecializationDecl *Spec = |
| 528 | dyn_cast<ClassTemplateSpecializationDecl>(ND)) { |
| 529 | TemplateArgs = &Spec->getTemplateArgs(); |
| 530 | return Spec->getSpecializedTemplate(); |
| 531 | } |
| 532 | |
| 533 | return 0; |
| 534 | } |
| 535 | |
| 536 | static bool isLambda(const NamedDecl *ND) { |
| 537 | const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(ND); |
| 538 | if (!Record) |
| 539 | return false; |
| 540 | |
| 541 | return Record->isLambda(); |
| 542 | } |
| 543 | |
| 544 | void CXXNameMangler::mangleName(const NamedDecl *ND) { |
| 545 | // <name> ::= <nested-name> |
| 546 | // ::= <unscoped-name> |
| 547 | // ::= <unscoped-template-name> <template-args> |
| 548 | // ::= <local-name> |
| 549 | // |
| 550 | const DeclContext *DC = getEffectiveDeclContext(ND); |
| 551 | |
| 552 | // If this is an extern variable declared locally, the relevant DeclContext |
| 553 | // is that of the containing namespace, or the translation unit. |
| 554 | // FIXME: This is a hack; extern variables declared locally should have |
| 555 | // a proper semantic declaration context! |
| 556 | if (isa<FunctionDecl>(DC) && ND->hasLinkage() && !isLambda(ND)) |
| 557 | while (!DC->isNamespace() && !DC->isTranslationUnit()) |
| 558 | DC = getEffectiveParentContext(DC); |
| 559 | else if (GetLocalClassDecl(ND)) { |
| 560 | mangleLocalName(ND); |
| 561 | return; |
| 562 | } |
| 563 | |
| 564 | DC = IgnoreLinkageSpecDecls(DC); |
| 565 | |
| 566 | if (DC->isTranslationUnit() || isStdNamespace(DC)) { |
| 567 | // Check if we have a template. |
| 568 | const TemplateArgumentList *TemplateArgs = 0; |
| 569 | if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) { |
| 570 | mangleUnscopedTemplateName(TD); |
| 571 | mangleTemplateArgs(*TemplateArgs); |
| 572 | return; |
| 573 | } |
| 574 | |
| 575 | mangleUnscopedName(ND); |
| 576 | return; |
| 577 | } |
| 578 | |
| 579 | if (isa<FunctionDecl>(DC) || isa<ObjCMethodDecl>(DC)) { |
| 580 | mangleLocalName(ND); |
| 581 | return; |
| 582 | } |
| 583 | |
| 584 | mangleNestedName(ND, DC); |
| 585 | } |
| 586 | void CXXNameMangler::mangleName(const TemplateDecl *TD, |
| 587 | const TemplateArgument *TemplateArgs, |
| 588 | unsigned NumTemplateArgs) { |
| 589 | const DeclContext *DC = IgnoreLinkageSpecDecls(getEffectiveDeclContext(TD)); |
| 590 | |
| 591 | if (DC->isTranslationUnit() || isStdNamespace(DC)) { |
| 592 | mangleUnscopedTemplateName(TD); |
| 593 | mangleTemplateArgs(TemplateArgs, NumTemplateArgs); |
| 594 | } else { |
| 595 | mangleNestedName(TD, TemplateArgs, NumTemplateArgs); |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | void CXXNameMangler::mangleUnscopedName(const NamedDecl *ND) { |
| 600 | // <unscoped-name> ::= <unqualified-name> |
| 601 | // ::= St <unqualified-name> # ::std:: |
| 602 | |
| 603 | if (isStdNamespace(IgnoreLinkageSpecDecls(getEffectiveDeclContext(ND)))) |
| 604 | Out << "St"; |
| 605 | |
| 606 | mangleUnqualifiedName(ND); |
| 607 | } |
| 608 | |
| 609 | void CXXNameMangler::mangleUnscopedTemplateName(const TemplateDecl *ND) { |
| 610 | // <unscoped-template-name> ::= <unscoped-name> |
| 611 | // ::= <substitution> |
| 612 | if (mangleSubstitution(ND)) |
| 613 | return; |
| 614 | |
| 615 | // <template-template-param> ::= <template-param> |
| 616 | if (const TemplateTemplateParmDecl *TTP |
| 617 | = dyn_cast<TemplateTemplateParmDecl>(ND)) { |
| 618 | mangleTemplateParameter(TTP->getIndex()); |
| 619 | return; |
| 620 | } |
| 621 | |
| 622 | mangleUnscopedName(ND->getTemplatedDecl()); |
| 623 | addSubstitution(ND); |
| 624 | } |
| 625 | |
| 626 | void CXXNameMangler::mangleUnscopedTemplateName(TemplateName Template) { |
| 627 | // <unscoped-template-name> ::= <unscoped-name> |
| 628 | // ::= <substitution> |
| 629 | if (TemplateDecl *TD = Template.getAsTemplateDecl()) |
| 630 | return mangleUnscopedTemplateName(TD); |
| 631 | |
| 632 | if (mangleSubstitution(Template)) |
| 633 | return; |
| 634 | |
| 635 | DependentTemplateName *Dependent = Template.getAsDependentTemplateName(); |
| 636 | assert(Dependent && "Not a dependent template name?"); |
| 637 | if (const IdentifierInfo *Id = Dependent->getIdentifier()) |
| 638 | mangleSourceName(Id); |
| 639 | else |
| 640 | mangleOperatorName(Dependent->getOperator(), UnknownArity); |
| 641 | |
| 642 | addSubstitution(Template); |
| 643 | } |
| 644 | |
| 645 | void CXXNameMangler::mangleFloat(const llvm::APFloat &f) { |
| 646 | // ABI: |
| 647 | // Floating-point literals are encoded using a fixed-length |
| 648 | // lowercase hexadecimal string corresponding to the internal |
| 649 | // representation (IEEE on Itanium), high-order bytes first, |
| 650 | // without leading zeroes. For example: "Lf bf800000 E" is -1.0f |
| 651 | // on Itanium. |
| 652 | // The 'without leading zeroes' thing seems to be an editorial |
| 653 | // mistake; see the discussion on cxx-abi-dev beginning on |
| 654 | // 2012-01-16. |
| 655 | |
| 656 | // Our requirements here are just barely weird enough to justify |
| 657 | // using a custom algorithm instead of post-processing APInt::toString(). |
| 658 | |
| 659 | llvm::APInt valueBits = f.bitcastToAPInt(); |
| 660 | unsigned numCharacters = (valueBits.getBitWidth() + 3) / 4; |
| 661 | assert(numCharacters != 0); |
| 662 | |
| 663 | // Allocate a buffer of the right number of characters. |
Dmitri Gribenko | cfa88f8 | 2013-01-12 19:30:44 +0000 | [diff] [blame] | 664 | SmallVector<char, 20> buffer; |
Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 665 | buffer.set_size(numCharacters); |
| 666 | |
| 667 | // Fill the buffer left-to-right. |
| 668 | for (unsigned stringIndex = 0; stringIndex != numCharacters; ++stringIndex) { |
| 669 | // The bit-index of the next hex digit. |
| 670 | unsigned digitBitIndex = 4 * (numCharacters - stringIndex - 1); |
| 671 | |
| 672 | // Project out 4 bits starting at 'digitIndex'. |
| 673 | llvm::integerPart hexDigit |
| 674 | = valueBits.getRawData()[digitBitIndex / llvm::integerPartWidth]; |
| 675 | hexDigit >>= (digitBitIndex % llvm::integerPartWidth); |
| 676 | hexDigit &= 0xF; |
| 677 | |
| 678 | // Map that over to a lowercase hex digit. |
| 679 | static const char charForHex[16] = { |
| 680 | '0', '1', '2', '3', '4', '5', '6', '7', |
| 681 | '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' |
| 682 | }; |
| 683 | buffer[stringIndex] = charForHex[hexDigit]; |
| 684 | } |
| 685 | |
| 686 | Out.write(buffer.data(), numCharacters); |
| 687 | } |
| 688 | |
| 689 | void CXXNameMangler::mangleNumber(const llvm::APSInt &Value) { |
| 690 | if (Value.isSigned() && Value.isNegative()) { |
| 691 | Out << 'n'; |
| 692 | Value.abs().print(Out, /*signed*/ false); |
| 693 | } else { |
| 694 | Value.print(Out, /*signed*/ false); |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | void CXXNameMangler::mangleNumber(int64_t Number) { |
| 699 | // <number> ::= [n] <non-negative decimal integer> |
| 700 | if (Number < 0) { |
| 701 | Out << 'n'; |
| 702 | Number = -Number; |
| 703 | } |
| 704 | |
| 705 | Out << Number; |
| 706 | } |
| 707 | |
| 708 | void CXXNameMangler::mangleCallOffset(int64_t NonVirtual, int64_t Virtual) { |
| 709 | // <call-offset> ::= h <nv-offset> _ |
| 710 | // ::= v <v-offset> _ |
| 711 | // <nv-offset> ::= <offset number> # non-virtual base override |
| 712 | // <v-offset> ::= <offset number> _ <virtual offset number> |
| 713 | // # virtual base override, with vcall offset |
| 714 | if (!Virtual) { |
| 715 | Out << 'h'; |
| 716 | mangleNumber(NonVirtual); |
| 717 | Out << '_'; |
| 718 | return; |
| 719 | } |
| 720 | |
| 721 | Out << 'v'; |
| 722 | mangleNumber(NonVirtual); |
| 723 | Out << '_'; |
| 724 | mangleNumber(Virtual); |
| 725 | Out << '_'; |
| 726 | } |
| 727 | |
| 728 | void CXXNameMangler::manglePrefix(QualType type) { |
| 729 | if (const TemplateSpecializationType *TST = |
| 730 | type->getAs<TemplateSpecializationType>()) { |
| 731 | if (!mangleSubstitution(QualType(TST, 0))) { |
| 732 | mangleTemplatePrefix(TST->getTemplateName()); |
| 733 | |
| 734 | // FIXME: GCC does not appear to mangle the template arguments when |
| 735 | // the template in question is a dependent template name. Should we |
| 736 | // emulate that badness? |
| 737 | mangleTemplateArgs(TST->getArgs(), TST->getNumArgs()); |
| 738 | addSubstitution(QualType(TST, 0)); |
| 739 | } |
| 740 | } else if (const DependentTemplateSpecializationType *DTST |
| 741 | = type->getAs<DependentTemplateSpecializationType>()) { |
| 742 | TemplateName Template |
| 743 | = getASTContext().getDependentTemplateName(DTST->getQualifier(), |
| 744 | DTST->getIdentifier()); |
| 745 | mangleTemplatePrefix(Template); |
| 746 | |
| 747 | // FIXME: GCC does not appear to mangle the template arguments when |
| 748 | // the template in question is a dependent template name. Should we |
| 749 | // emulate that badness? |
| 750 | mangleTemplateArgs(DTST->getArgs(), DTST->getNumArgs()); |
| 751 | } else { |
| 752 | // We use the QualType mangle type variant here because it handles |
| 753 | // substitutions. |
| 754 | mangleType(type); |
| 755 | } |
| 756 | } |
| 757 | |
| 758 | /// Mangle everything prior to the base-unresolved-name in an unresolved-name. |
| 759 | /// |
| 760 | /// \param firstQualifierLookup - the entity found by unqualified lookup |
| 761 | /// for the first name in the qualifier, if this is for a member expression |
| 762 | /// \param recursive - true if this is being called recursively, |
| 763 | /// i.e. if there is more prefix "to the right". |
| 764 | void CXXNameMangler::mangleUnresolvedPrefix(NestedNameSpecifier *qualifier, |
| 765 | NamedDecl *firstQualifierLookup, |
| 766 | bool recursive) { |
| 767 | |
| 768 | // x, ::x |
| 769 | // <unresolved-name> ::= [gs] <base-unresolved-name> |
| 770 | |
| 771 | // T::x / decltype(p)::x |
| 772 | // <unresolved-name> ::= sr <unresolved-type> <base-unresolved-name> |
| 773 | |
| 774 | // T::N::x /decltype(p)::N::x |
| 775 | // <unresolved-name> ::= srN <unresolved-type> <unresolved-qualifier-level>+ E |
| 776 | // <base-unresolved-name> |
| 777 | |
| 778 | // A::x, N::y, A<T>::z; "gs" means leading "::" |
| 779 | // <unresolved-name> ::= [gs] sr <unresolved-qualifier-level>+ E |
| 780 | // <base-unresolved-name> |
| 781 | |
| 782 | switch (qualifier->getKind()) { |
| 783 | case NestedNameSpecifier::Global: |
| 784 | Out << "gs"; |
| 785 | |
| 786 | // We want an 'sr' unless this is the entire NNS. |
| 787 | if (recursive) |
| 788 | Out << "sr"; |
| 789 | |
| 790 | // We never want an 'E' here. |
| 791 | return; |
| 792 | |
| 793 | case NestedNameSpecifier::Namespace: |
| 794 | if (qualifier->getPrefix()) |
| 795 | mangleUnresolvedPrefix(qualifier->getPrefix(), firstQualifierLookup, |
| 796 | /*recursive*/ true); |
| 797 | else |
| 798 | Out << "sr"; |
| 799 | mangleSourceName(qualifier->getAsNamespace()->getIdentifier()); |
| 800 | break; |
| 801 | case NestedNameSpecifier::NamespaceAlias: |
| 802 | if (qualifier->getPrefix()) |
| 803 | mangleUnresolvedPrefix(qualifier->getPrefix(), firstQualifierLookup, |
| 804 | /*recursive*/ true); |
| 805 | else |
| 806 | Out << "sr"; |
| 807 | mangleSourceName(qualifier->getAsNamespaceAlias()->getIdentifier()); |
| 808 | break; |
| 809 | |
| 810 | case NestedNameSpecifier::TypeSpec: |
| 811 | case NestedNameSpecifier::TypeSpecWithTemplate: { |
| 812 | const Type *type = qualifier->getAsType(); |
| 813 | |
| 814 | // We only want to use an unresolved-type encoding if this is one of: |
| 815 | // - a decltype |
| 816 | // - a template type parameter |
| 817 | // - a template template parameter with arguments |
| 818 | // In all of these cases, we should have no prefix. |
| 819 | if (qualifier->getPrefix()) { |
| 820 | mangleUnresolvedPrefix(qualifier->getPrefix(), firstQualifierLookup, |
| 821 | /*recursive*/ true); |
| 822 | } else { |
| 823 | // Otherwise, all the cases want this. |
| 824 | Out << "sr"; |
| 825 | } |
| 826 | |
| 827 | // Only certain other types are valid as prefixes; enumerate them. |
| 828 | switch (type->getTypeClass()) { |
| 829 | case Type::Builtin: |
| 830 | case Type::Complex: |
| 831 | case Type::Pointer: |
| 832 | case Type::BlockPointer: |
| 833 | case Type::LValueReference: |
| 834 | case Type::RValueReference: |
| 835 | case Type::MemberPointer: |
| 836 | case Type::ConstantArray: |
| 837 | case Type::IncompleteArray: |
| 838 | case Type::VariableArray: |
| 839 | case Type::DependentSizedArray: |
| 840 | case Type::DependentSizedExtVector: |
| 841 | case Type::Vector: |
| 842 | case Type::ExtVector: |
| 843 | case Type::FunctionProto: |
| 844 | case Type::FunctionNoProto: |
| 845 | case Type::Enum: |
| 846 | case Type::Paren: |
| 847 | case Type::Elaborated: |
| 848 | case Type::Attributed: |
| 849 | case Type::Auto: |
| 850 | case Type::PackExpansion: |
| 851 | case Type::ObjCObject: |
| 852 | case Type::ObjCInterface: |
| 853 | case Type::ObjCObjectPointer: |
| 854 | case Type::Atomic: |
| 855 | llvm_unreachable("type is illegal as a nested name specifier"); |
| 856 | |
| 857 | case Type::SubstTemplateTypeParmPack: |
| 858 | // FIXME: not clear how to mangle this! |
| 859 | // template <class T...> class A { |
| 860 | // template <class U...> void foo(decltype(T::foo(U())) x...); |
| 861 | // }; |
| 862 | Out << "_SUBSTPACK_"; |
| 863 | break; |
| 864 | |
| 865 | // <unresolved-type> ::= <template-param> |
| 866 | // ::= <decltype> |
| 867 | // ::= <template-template-param> <template-args> |
| 868 | // (this last is not official yet) |
| 869 | case Type::TypeOfExpr: |
| 870 | case Type::TypeOf: |
| 871 | case Type::Decltype: |
| 872 | case Type::TemplateTypeParm: |
| 873 | case Type::UnaryTransform: |
| 874 | case Type::SubstTemplateTypeParm: |
| 875 | unresolvedType: |
| 876 | assert(!qualifier->getPrefix()); |
| 877 | |
| 878 | // We only get here recursively if we're followed by identifiers. |
| 879 | if (recursive) Out << 'N'; |
| 880 | |
| 881 | // This seems to do everything we want. It's not really |
| 882 | // sanctioned for a substituted template parameter, though. |
| 883 | mangleType(QualType(type, 0)); |
| 884 | |
| 885 | // We never want to print 'E' directly after an unresolved-type, |
| 886 | // so we return directly. |
| 887 | return; |
| 888 | |
| 889 | case Type::Typedef: |
| 890 | mangleSourceName(cast<TypedefType>(type)->getDecl()->getIdentifier()); |
| 891 | break; |
| 892 | |
| 893 | case Type::UnresolvedUsing: |
| 894 | mangleSourceName(cast<UnresolvedUsingType>(type)->getDecl() |
| 895 | ->getIdentifier()); |
| 896 | break; |
| 897 | |
| 898 | case Type::Record: |
| 899 | mangleSourceName(cast<RecordType>(type)->getDecl()->getIdentifier()); |
| 900 | break; |
| 901 | |
| 902 | case Type::TemplateSpecialization: { |
| 903 | const TemplateSpecializationType *tst |
| 904 | = cast<TemplateSpecializationType>(type); |
| 905 | TemplateName name = tst->getTemplateName(); |
| 906 | switch (name.getKind()) { |
| 907 | case TemplateName::Template: |
| 908 | case TemplateName::QualifiedTemplate: { |
| 909 | TemplateDecl *temp = name.getAsTemplateDecl(); |
| 910 | |
| 911 | // If the base is a template template parameter, this is an |
| 912 | // unresolved type. |
| 913 | assert(temp && "no template for template specialization type"); |
| 914 | if (isa<TemplateTemplateParmDecl>(temp)) goto unresolvedType; |
| 915 | |
| 916 | mangleSourceName(temp->getIdentifier()); |
| 917 | break; |
| 918 | } |
| 919 | |
| 920 | case TemplateName::OverloadedTemplate: |
| 921 | case TemplateName::DependentTemplate: |
| 922 | llvm_unreachable("invalid base for a template specialization type"); |
| 923 | |
| 924 | case TemplateName::SubstTemplateTemplateParm: { |
| 925 | SubstTemplateTemplateParmStorage *subst |
| 926 | = name.getAsSubstTemplateTemplateParm(); |
| 927 | mangleExistingSubstitution(subst->getReplacement()); |
| 928 | break; |
| 929 | } |
| 930 | |
| 931 | case TemplateName::SubstTemplateTemplateParmPack: { |
| 932 | // FIXME: not clear how to mangle this! |
| 933 | // template <template <class U> class T...> class A { |
| 934 | // template <class U...> void foo(decltype(T<U>::foo) x...); |
| 935 | // }; |
| 936 | Out << "_SUBSTPACK_"; |
| 937 | break; |
| 938 | } |
| 939 | } |
| 940 | |
| 941 | mangleTemplateArgs(tst->getArgs(), tst->getNumArgs()); |
| 942 | break; |
| 943 | } |
| 944 | |
| 945 | case Type::InjectedClassName: |
| 946 | mangleSourceName(cast<InjectedClassNameType>(type)->getDecl() |
| 947 | ->getIdentifier()); |
| 948 | break; |
| 949 | |
| 950 | case Type::DependentName: |
| 951 | mangleSourceName(cast<DependentNameType>(type)->getIdentifier()); |
| 952 | break; |
| 953 | |
| 954 | case Type::DependentTemplateSpecialization: { |
| 955 | const DependentTemplateSpecializationType *tst |
| 956 | = cast<DependentTemplateSpecializationType>(type); |
| 957 | mangleSourceName(tst->getIdentifier()); |
| 958 | mangleTemplateArgs(tst->getArgs(), tst->getNumArgs()); |
| 959 | break; |
| 960 | } |
| 961 | } |
| 962 | break; |
| 963 | } |
| 964 | |
| 965 | case NestedNameSpecifier::Identifier: |
| 966 | // Member expressions can have these without prefixes. |
| 967 | if (qualifier->getPrefix()) { |
| 968 | mangleUnresolvedPrefix(qualifier->getPrefix(), firstQualifierLookup, |
| 969 | /*recursive*/ true); |
| 970 | } else if (firstQualifierLookup) { |
| 971 | |
| 972 | // Try to make a proper qualifier out of the lookup result, and |
| 973 | // then just recurse on that. |
| 974 | NestedNameSpecifier *newQualifier; |
| 975 | if (TypeDecl *typeDecl = dyn_cast<TypeDecl>(firstQualifierLookup)) { |
| 976 | QualType type = getASTContext().getTypeDeclType(typeDecl); |
| 977 | |
| 978 | // Pretend we had a different nested name specifier. |
| 979 | newQualifier = NestedNameSpecifier::Create(getASTContext(), |
| 980 | /*prefix*/ 0, |
| 981 | /*template*/ false, |
| 982 | type.getTypePtr()); |
| 983 | } else if (NamespaceDecl *nspace = |
| 984 | dyn_cast<NamespaceDecl>(firstQualifierLookup)) { |
| 985 | newQualifier = NestedNameSpecifier::Create(getASTContext(), |
| 986 | /*prefix*/ 0, |
| 987 | nspace); |
| 988 | } else if (NamespaceAliasDecl *alias = |
| 989 | dyn_cast<NamespaceAliasDecl>(firstQualifierLookup)) { |
| 990 | newQualifier = NestedNameSpecifier::Create(getASTContext(), |
| 991 | /*prefix*/ 0, |
| 992 | alias); |
| 993 | } else { |
| 994 | // No sensible mangling to do here. |
| 995 | newQualifier = 0; |
| 996 | } |
| 997 | |
| 998 | if (newQualifier) |
| 999 | return mangleUnresolvedPrefix(newQualifier, /*lookup*/ 0, recursive); |
| 1000 | |
| 1001 | } else { |
| 1002 | Out << "sr"; |
| 1003 | } |
| 1004 | |
| 1005 | mangleSourceName(qualifier->getAsIdentifier()); |
| 1006 | break; |
| 1007 | } |
| 1008 | |
| 1009 | // If this was the innermost part of the NNS, and we fell out to |
| 1010 | // here, append an 'E'. |
| 1011 | if (!recursive) |
| 1012 | Out << 'E'; |
| 1013 | } |
| 1014 | |
| 1015 | /// Mangle an unresolved-name, which is generally used for names which |
| 1016 | /// weren't resolved to specific entities. |
| 1017 | void CXXNameMangler::mangleUnresolvedName(NestedNameSpecifier *qualifier, |
| 1018 | NamedDecl *firstQualifierLookup, |
| 1019 | DeclarationName name, |
| 1020 | unsigned knownArity) { |
| 1021 | if (qualifier) mangleUnresolvedPrefix(qualifier, firstQualifierLookup); |
| 1022 | mangleUnqualifiedName(0, name, knownArity); |
| 1023 | } |
| 1024 | |
| 1025 | static const FieldDecl *FindFirstNamedDataMember(const RecordDecl *RD) { |
| 1026 | assert(RD->isAnonymousStructOrUnion() && |
| 1027 | "Expected anonymous struct or union!"); |
| 1028 | |
| 1029 | for (RecordDecl::field_iterator I = RD->field_begin(), E = RD->field_end(); |
| 1030 | I != E; ++I) { |
| 1031 | if (I->getIdentifier()) |
| 1032 | return *I; |
| 1033 | |
| 1034 | if (const RecordType *RT = I->getType()->getAs<RecordType>()) |
| 1035 | if (const FieldDecl *NamedDataMember = |
| 1036 | FindFirstNamedDataMember(RT->getDecl())) |
| 1037 | return NamedDataMember; |
| 1038 | } |
| 1039 | |
| 1040 | // We didn't find a named data member. |
| 1041 | return 0; |
| 1042 | } |
| 1043 | |
| 1044 | void CXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND, |
| 1045 | DeclarationName Name, |
| 1046 | unsigned KnownArity) { |
| 1047 | // <unqualified-name> ::= <operator-name> |
| 1048 | // ::= <ctor-dtor-name> |
| 1049 | // ::= <source-name> |
| 1050 | switch (Name.getNameKind()) { |
| 1051 | case DeclarationName::Identifier: { |
| 1052 | if (const IdentifierInfo *II = Name.getAsIdentifierInfo()) { |
| 1053 | // We must avoid conflicts between internally- and externally- |
| 1054 | // linked variable and function declaration names in the same TU: |
| 1055 | // void test() { extern void foo(); } |
| 1056 | // static void foo(); |
| 1057 | // This naming convention is the same as that followed by GCC, |
| 1058 | // though it shouldn't actually matter. |
| 1059 | if (ND && ND->getLinkage() == InternalLinkage && |
| 1060 | getEffectiveDeclContext(ND)->isFileContext()) |
| 1061 | Out << 'L'; |
| 1062 | |
| 1063 | mangleSourceName(II); |
| 1064 | break; |
| 1065 | } |
| 1066 | |
| 1067 | // Otherwise, an anonymous entity. We must have a declaration. |
| 1068 | assert(ND && "mangling empty name without declaration"); |
| 1069 | |
| 1070 | if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) { |
| 1071 | if (NS->isAnonymousNamespace()) { |
| 1072 | // This is how gcc mangles these names. |
| 1073 | Out << "12_GLOBAL__N_1"; |
| 1074 | break; |
| 1075 | } |
| 1076 | } |
| 1077 | |
| 1078 | if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) { |
| 1079 | // We must have an anonymous union or struct declaration. |
| 1080 | const RecordDecl *RD = |
| 1081 | cast<RecordDecl>(VD->getType()->getAs<RecordType>()->getDecl()); |
| 1082 | |
| 1083 | // Itanium C++ ABI 5.1.2: |
| 1084 | // |
| 1085 | // For the purposes of mangling, the name of an anonymous union is |
| 1086 | // considered to be the name of the first named data member found by a |
| 1087 | // pre-order, depth-first, declaration-order walk of the data members of |
| 1088 | // the anonymous union. If there is no such data member (i.e., if all of |
| 1089 | // the data members in the union are unnamed), then there is no way for |
| 1090 | // a program to refer to the anonymous union, and there is therefore no |
| 1091 | // need to mangle its name. |
| 1092 | const FieldDecl *FD = FindFirstNamedDataMember(RD); |
| 1093 | |
| 1094 | // It's actually possible for various reasons for us to get here |
| 1095 | // with an empty anonymous struct / union. Fortunately, it |
| 1096 | // doesn't really matter what name we generate. |
| 1097 | if (!FD) break; |
| 1098 | assert(FD->getIdentifier() && "Data member name isn't an identifier!"); |
| 1099 | |
| 1100 | mangleSourceName(FD->getIdentifier()); |
| 1101 | break; |
| 1102 | } |
| 1103 | |
| 1104 | // We must have an anonymous struct. |
| 1105 | const TagDecl *TD = cast<TagDecl>(ND); |
| 1106 | if (const TypedefNameDecl *D = TD->getTypedefNameForAnonDecl()) { |
| 1107 | assert(TD->getDeclContext() == D->getDeclContext() && |
| 1108 | "Typedef should not be in another decl context!"); |
| 1109 | assert(D->getDeclName().getAsIdentifierInfo() && |
| 1110 | "Typedef was not named!"); |
| 1111 | mangleSourceName(D->getDeclName().getAsIdentifierInfo()); |
| 1112 | break; |
| 1113 | } |
| 1114 | |
| 1115 | // <unnamed-type-name> ::= <closure-type-name> |
| 1116 | // |
| 1117 | // <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _ |
| 1118 | // <lambda-sig> ::= <parameter-type>+ # Parameter types or 'v' for 'void'. |
| 1119 | if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(TD)) { |
| 1120 | if (Record->isLambda() && Record->getLambdaManglingNumber()) { |
| 1121 | mangleLambda(Record); |
| 1122 | break; |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | int UnnamedMangle = Context.getASTContext().getUnnamedTagManglingNumber(TD); |
| 1127 | if (UnnamedMangle != -1) { |
| 1128 | Out << "Ut"; |
| 1129 | if (UnnamedMangle != 0) |
| 1130 | Out << llvm::utostr(UnnamedMangle - 1); |
| 1131 | Out << '_'; |
| 1132 | break; |
| 1133 | } |
| 1134 | |
| 1135 | // Get a unique id for the anonymous struct. |
| 1136 | uint64_t AnonStructId = Context.getAnonymousStructId(TD); |
| 1137 | |
| 1138 | // Mangle it as a source name in the form |
| 1139 | // [n] $_<id> |
| 1140 | // where n is the length of the string. |
| 1141 | SmallString<8> Str; |
| 1142 | Str += "$_"; |
| 1143 | Str += llvm::utostr(AnonStructId); |
| 1144 | |
| 1145 | Out << Str.size(); |
| 1146 | Out << Str.str(); |
| 1147 | break; |
| 1148 | } |
| 1149 | |
| 1150 | case DeclarationName::ObjCZeroArgSelector: |
| 1151 | case DeclarationName::ObjCOneArgSelector: |
| 1152 | case DeclarationName::ObjCMultiArgSelector: |
| 1153 | llvm_unreachable("Can't mangle Objective-C selector names here!"); |
| 1154 | |
| 1155 | case DeclarationName::CXXConstructorName: |
| 1156 | if (ND == Structor) |
| 1157 | // If the named decl is the C++ constructor we're mangling, use the type |
| 1158 | // we were given. |
| 1159 | mangleCXXCtorType(static_cast<CXXCtorType>(StructorType)); |
| 1160 | else |
| 1161 | // Otherwise, use the complete constructor name. This is relevant if a |
| 1162 | // class with a constructor is declared within a constructor. |
| 1163 | mangleCXXCtorType(Ctor_Complete); |
| 1164 | break; |
| 1165 | |
| 1166 | case DeclarationName::CXXDestructorName: |
| 1167 | if (ND == Structor) |
| 1168 | // If the named decl is the C++ destructor we're mangling, use the type we |
| 1169 | // were given. |
| 1170 | mangleCXXDtorType(static_cast<CXXDtorType>(StructorType)); |
| 1171 | else |
| 1172 | // Otherwise, use the complete destructor name. This is relevant if a |
| 1173 | // class with a destructor is declared within a destructor. |
| 1174 | mangleCXXDtorType(Dtor_Complete); |
| 1175 | break; |
| 1176 | |
| 1177 | case DeclarationName::CXXConversionFunctionName: |
| 1178 | // <operator-name> ::= cv <type> # (cast) |
| 1179 | Out << "cv"; |
| 1180 | mangleType(Name.getCXXNameType()); |
| 1181 | break; |
| 1182 | |
| 1183 | case DeclarationName::CXXOperatorName: { |
| 1184 | unsigned Arity; |
| 1185 | if (ND) { |
| 1186 | Arity = cast<FunctionDecl>(ND)->getNumParams(); |
| 1187 | |
| 1188 | // If we have a C++ member function, we need to include the 'this' pointer. |
| 1189 | // FIXME: This does not make sense for operators that are static, but their |
| 1190 | // names stay the same regardless of the arity (operator new for instance). |
| 1191 | if (isa<CXXMethodDecl>(ND)) |
| 1192 | Arity++; |
| 1193 | } else |
| 1194 | Arity = KnownArity; |
| 1195 | |
| 1196 | mangleOperatorName(Name.getCXXOverloadedOperator(), Arity); |
| 1197 | break; |
| 1198 | } |
| 1199 | |
| 1200 | case DeclarationName::CXXLiteralOperatorName: |
| 1201 | // FIXME: This mangling is not yet official. |
| 1202 | Out << "li"; |
| 1203 | mangleSourceName(Name.getCXXLiteralIdentifier()); |
| 1204 | break; |
| 1205 | |
| 1206 | case DeclarationName::CXXUsingDirective: |
| 1207 | llvm_unreachable("Can't mangle a using directive name!"); |
| 1208 | } |
| 1209 | } |
| 1210 | |
| 1211 | void CXXNameMangler::mangleSourceName(const IdentifierInfo *II) { |
| 1212 | // <source-name> ::= <positive length number> <identifier> |
| 1213 | // <number> ::= [n] <non-negative decimal integer> |
| 1214 | // <identifier> ::= <unqualified source code identifier> |
| 1215 | Out << II->getLength() << II->getName(); |
| 1216 | } |
| 1217 | |
| 1218 | void CXXNameMangler::mangleNestedName(const NamedDecl *ND, |
| 1219 | const DeclContext *DC, |
| 1220 | bool NoFunction) { |
| 1221 | // <nested-name> |
| 1222 | // ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E |
| 1223 | // ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix> |
| 1224 | // <template-args> E |
| 1225 | |
| 1226 | Out << 'N'; |
| 1227 | if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(ND)) { |
| 1228 | mangleQualifiers(Qualifiers::fromCVRMask(Method->getTypeQualifiers())); |
| 1229 | mangleRefQualifier(Method->getRefQualifier()); |
| 1230 | } |
| 1231 | |
| 1232 | // Check if we have a template. |
| 1233 | const TemplateArgumentList *TemplateArgs = 0; |
| 1234 | if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) { |
| 1235 | mangleTemplatePrefix(TD); |
| 1236 | mangleTemplateArgs(*TemplateArgs); |
| 1237 | } |
| 1238 | else { |
| 1239 | manglePrefix(DC, NoFunction); |
| 1240 | mangleUnqualifiedName(ND); |
| 1241 | } |
| 1242 | |
| 1243 | Out << 'E'; |
| 1244 | } |
| 1245 | void CXXNameMangler::mangleNestedName(const TemplateDecl *TD, |
| 1246 | const TemplateArgument *TemplateArgs, |
| 1247 | unsigned NumTemplateArgs) { |
| 1248 | // <nested-name> ::= N [<CV-qualifiers>] <template-prefix> <template-args> E |
| 1249 | |
| 1250 | Out << 'N'; |
| 1251 | |
| 1252 | mangleTemplatePrefix(TD); |
| 1253 | mangleTemplateArgs(TemplateArgs, NumTemplateArgs); |
| 1254 | |
| 1255 | Out << 'E'; |
| 1256 | } |
| 1257 | |
| 1258 | void CXXNameMangler::mangleLocalName(const NamedDecl *ND) { |
| 1259 | // <local-name> := Z <function encoding> E <entity name> [<discriminator>] |
| 1260 | // := Z <function encoding> E s [<discriminator>] |
| 1261 | // <local-name> := Z <function encoding> E d [ <parameter number> ] |
| 1262 | // _ <entity name> |
| 1263 | // <discriminator> := _ <non-negative number> |
| 1264 | const DeclContext *DC = getEffectiveDeclContext(ND); |
| 1265 | if (isa<ObjCMethodDecl>(DC) && isa<FunctionDecl>(ND)) { |
| 1266 | // Don't add objc method name mangling to locally declared function |
| 1267 | mangleUnqualifiedName(ND); |
| 1268 | return; |
| 1269 | } |
| 1270 | |
| 1271 | Out << 'Z'; |
| 1272 | |
| 1273 | if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(DC)) { |
| 1274 | mangleObjCMethodName(MD); |
| 1275 | } else if (const CXXRecordDecl *RD = GetLocalClassDecl(ND)) { |
| 1276 | mangleFunctionEncoding(cast<FunctionDecl>(getEffectiveDeclContext(RD))); |
| 1277 | Out << 'E'; |
| 1278 | |
| 1279 | // The parameter number is omitted for the last parameter, 0 for the |
| 1280 | // second-to-last parameter, 1 for the third-to-last parameter, etc. The |
| 1281 | // <entity name> will of course contain a <closure-type-name>: Its |
| 1282 | // numbering will be local to the particular argument in which it appears |
| 1283 | // -- other default arguments do not affect its encoding. |
| 1284 | bool SkipDiscriminator = false; |
| 1285 | if (RD->isLambda()) { |
| 1286 | if (const ParmVarDecl *Parm |
| 1287 | = dyn_cast_or_null<ParmVarDecl>(RD->getLambdaContextDecl())) { |
| 1288 | if (const FunctionDecl *Func |
| 1289 | = dyn_cast<FunctionDecl>(Parm->getDeclContext())) { |
| 1290 | Out << 'd'; |
| 1291 | unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex(); |
| 1292 | if (Num > 1) |
| 1293 | mangleNumber(Num - 2); |
| 1294 | Out << '_'; |
| 1295 | SkipDiscriminator = true; |
| 1296 | } |
| 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | // Mangle the name relative to the closest enclosing function. |
| 1301 | if (ND == RD) // equality ok because RD derived from ND above |
| 1302 | mangleUnqualifiedName(ND); |
| 1303 | else |
| 1304 | mangleNestedName(ND, DC, true /*NoFunction*/); |
| 1305 | |
| 1306 | if (!SkipDiscriminator) { |
| 1307 | unsigned disc; |
| 1308 | if (Context.getNextDiscriminator(RD, disc)) { |
| 1309 | if (disc < 10) |
| 1310 | Out << '_' << disc; |
| 1311 | else |
| 1312 | Out << "__" << disc << '_'; |
| 1313 | } |
| 1314 | } |
| 1315 | |
| 1316 | return; |
| 1317 | } |
| 1318 | else |
| 1319 | mangleFunctionEncoding(cast<FunctionDecl>(DC)); |
| 1320 | |
| 1321 | Out << 'E'; |
| 1322 | mangleUnqualifiedName(ND); |
| 1323 | } |
| 1324 | |
| 1325 | void CXXNameMangler::mangleLambda(const CXXRecordDecl *Lambda) { |
| 1326 | // If the context of a closure type is an initializer for a class member |
| 1327 | // (static or nonstatic), it is encoded in a qualified name with a final |
| 1328 | // <prefix> of the form: |
| 1329 | // |
| 1330 | // <data-member-prefix> := <member source-name> M |
| 1331 | // |
| 1332 | // Technically, the data-member-prefix is part of the <prefix>. However, |
| 1333 | // since a closure type will always be mangled with a prefix, it's easier |
| 1334 | // to emit that last part of the prefix here. |
| 1335 | if (Decl *Context = Lambda->getLambdaContextDecl()) { |
| 1336 | if ((isa<VarDecl>(Context) || isa<FieldDecl>(Context)) && |
| 1337 | Context->getDeclContext()->isRecord()) { |
| 1338 | if (const IdentifierInfo *Name |
| 1339 | = cast<NamedDecl>(Context)->getIdentifier()) { |
| 1340 | mangleSourceName(Name); |
| 1341 | Out << 'M'; |
| 1342 | } |
| 1343 | } |
| 1344 | } |
| 1345 | |
| 1346 | Out << "Ul"; |
| 1347 | const FunctionProtoType *Proto = Lambda->getLambdaTypeInfo()->getType()-> |
| 1348 | getAs<FunctionProtoType>(); |
| 1349 | mangleBareFunctionType(Proto, /*MangleReturnType=*/false); |
| 1350 | Out << "E"; |
| 1351 | |
| 1352 | // The number is omitted for the first closure type with a given |
| 1353 | // <lambda-sig> in a given context; it is n-2 for the nth closure type |
| 1354 | // (in lexical order) with that same <lambda-sig> and context. |
| 1355 | // |
| 1356 | // The AST keeps track of the number for us. |
| 1357 | unsigned Number = Lambda->getLambdaManglingNumber(); |
| 1358 | assert(Number > 0 && "Lambda should be mangled as an unnamed class"); |
| 1359 | if (Number > 1) |
| 1360 | mangleNumber(Number - 2); |
| 1361 | Out << '_'; |
| 1362 | } |
| 1363 | |
| 1364 | void CXXNameMangler::manglePrefix(NestedNameSpecifier *qualifier) { |
| 1365 | switch (qualifier->getKind()) { |
| 1366 | case NestedNameSpecifier::Global: |
| 1367 | // nothing |
| 1368 | return; |
| 1369 | |
| 1370 | case NestedNameSpecifier::Namespace: |
| 1371 | mangleName(qualifier->getAsNamespace()); |
| 1372 | return; |
| 1373 | |
| 1374 | case NestedNameSpecifier::NamespaceAlias: |
| 1375 | mangleName(qualifier->getAsNamespaceAlias()->getNamespace()); |
| 1376 | return; |
| 1377 | |
| 1378 | case NestedNameSpecifier::TypeSpec: |
| 1379 | case NestedNameSpecifier::TypeSpecWithTemplate: |
| 1380 | manglePrefix(QualType(qualifier->getAsType(), 0)); |
| 1381 | return; |
| 1382 | |
| 1383 | case NestedNameSpecifier::Identifier: |
| 1384 | // Member expressions can have these without prefixes, but that |
| 1385 | // should end up in mangleUnresolvedPrefix instead. |
| 1386 | assert(qualifier->getPrefix()); |
| 1387 | manglePrefix(qualifier->getPrefix()); |
| 1388 | |
| 1389 | mangleSourceName(qualifier->getAsIdentifier()); |
| 1390 | return; |
| 1391 | } |
| 1392 | |
| 1393 | llvm_unreachable("unexpected nested name specifier"); |
| 1394 | } |
| 1395 | |
| 1396 | void CXXNameMangler::manglePrefix(const DeclContext *DC, bool NoFunction) { |
| 1397 | // <prefix> ::= <prefix> <unqualified-name> |
| 1398 | // ::= <template-prefix> <template-args> |
| 1399 | // ::= <template-param> |
| 1400 | // ::= # empty |
| 1401 | // ::= <substitution> |
| 1402 | |
| 1403 | DC = IgnoreLinkageSpecDecls(DC); |
| 1404 | |
| 1405 | if (DC->isTranslationUnit()) |
| 1406 | return; |
| 1407 | |
| 1408 | if (const BlockDecl *Block = dyn_cast<BlockDecl>(DC)) { |
| 1409 | manglePrefix(getEffectiveParentContext(DC), NoFunction); |
| 1410 | SmallString<64> Name; |
| 1411 | llvm::raw_svector_ostream NameStream(Name); |
| 1412 | Context.mangleBlock(Block, NameStream); |
| 1413 | NameStream.flush(); |
| 1414 | Out << Name.size() << Name; |
| 1415 | return; |
| 1416 | } |
| 1417 | |
| 1418 | const NamedDecl *ND = cast<NamedDecl>(DC); |
| 1419 | if (mangleSubstitution(ND)) |
| 1420 | return; |
| 1421 | |
| 1422 | // Check if we have a template. |
| 1423 | const TemplateArgumentList *TemplateArgs = 0; |
| 1424 | if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) { |
| 1425 | mangleTemplatePrefix(TD); |
| 1426 | mangleTemplateArgs(*TemplateArgs); |
| 1427 | } |
| 1428 | else if(NoFunction && (isa<FunctionDecl>(ND) || isa<ObjCMethodDecl>(ND))) |
| 1429 | return; |
| 1430 | else if (const ObjCMethodDecl *Method = dyn_cast<ObjCMethodDecl>(ND)) |
| 1431 | mangleObjCMethodName(Method); |
| 1432 | else { |
| 1433 | manglePrefix(getEffectiveDeclContext(ND), NoFunction); |
| 1434 | mangleUnqualifiedName(ND); |
| 1435 | } |
| 1436 | |
| 1437 | addSubstitution(ND); |
| 1438 | } |
| 1439 | |
| 1440 | void CXXNameMangler::mangleTemplatePrefix(TemplateName Template) { |
| 1441 | // <template-prefix> ::= <prefix> <template unqualified-name> |
| 1442 | // ::= <template-param> |
| 1443 | // ::= <substitution> |
| 1444 | if (TemplateDecl *TD = Template.getAsTemplateDecl()) |
| 1445 | return mangleTemplatePrefix(TD); |
| 1446 | |
| 1447 | if (QualifiedTemplateName *Qualified = Template.getAsQualifiedTemplateName()) |
| 1448 | manglePrefix(Qualified->getQualifier()); |
| 1449 | |
| 1450 | if (OverloadedTemplateStorage *Overloaded |
| 1451 | = Template.getAsOverloadedTemplate()) { |
| 1452 | mangleUnqualifiedName(0, (*Overloaded->begin())->getDeclName(), |
| 1453 | UnknownArity); |
| 1454 | return; |
| 1455 | } |
| 1456 | |
| 1457 | DependentTemplateName *Dependent = Template.getAsDependentTemplateName(); |
| 1458 | assert(Dependent && "Unknown template name kind?"); |
| 1459 | manglePrefix(Dependent->getQualifier()); |
| 1460 | mangleUnscopedTemplateName(Template); |
| 1461 | } |
| 1462 | |
| 1463 | void CXXNameMangler::mangleTemplatePrefix(const TemplateDecl *ND) { |
| 1464 | // <template-prefix> ::= <prefix> <template unqualified-name> |
| 1465 | // ::= <template-param> |
| 1466 | // ::= <substitution> |
| 1467 | // <template-template-param> ::= <template-param> |
| 1468 | // <substitution> |
| 1469 | |
| 1470 | if (mangleSubstitution(ND)) |
| 1471 | return; |
| 1472 | |
| 1473 | // <template-template-param> ::= <template-param> |
| 1474 | if (const TemplateTemplateParmDecl *TTP |
| 1475 | = dyn_cast<TemplateTemplateParmDecl>(ND)) { |
| 1476 | mangleTemplateParameter(TTP->getIndex()); |
| 1477 | return; |
| 1478 | } |
| 1479 | |
| 1480 | manglePrefix(getEffectiveDeclContext(ND)); |
| 1481 | mangleUnqualifiedName(ND->getTemplatedDecl()); |
| 1482 | addSubstitution(ND); |
| 1483 | } |
| 1484 | |
| 1485 | /// Mangles a template name under the production <type>. Required for |
| 1486 | /// template template arguments. |
| 1487 | /// <type> ::= <class-enum-type> |
| 1488 | /// ::= <template-param> |
| 1489 | /// ::= <substitution> |
| 1490 | void CXXNameMangler::mangleType(TemplateName TN) { |
| 1491 | if (mangleSubstitution(TN)) |
| 1492 | return; |
| 1493 | |
| 1494 | TemplateDecl *TD = 0; |
| 1495 | |
| 1496 | switch (TN.getKind()) { |
| 1497 | case TemplateName::QualifiedTemplate: |
| 1498 | TD = TN.getAsQualifiedTemplateName()->getTemplateDecl(); |
| 1499 | goto HaveDecl; |
| 1500 | |
| 1501 | case TemplateName::Template: |
| 1502 | TD = TN.getAsTemplateDecl(); |
| 1503 | goto HaveDecl; |
| 1504 | |
| 1505 | HaveDecl: |
| 1506 | if (isa<TemplateTemplateParmDecl>(TD)) |
| 1507 | mangleTemplateParameter(cast<TemplateTemplateParmDecl>(TD)->getIndex()); |
| 1508 | else |
| 1509 | mangleName(TD); |
| 1510 | break; |
| 1511 | |
| 1512 | case TemplateName::OverloadedTemplate: |
| 1513 | llvm_unreachable("can't mangle an overloaded template name as a <type>"); |
| 1514 | |
| 1515 | case TemplateName::DependentTemplate: { |
| 1516 | const DependentTemplateName *Dependent = TN.getAsDependentTemplateName(); |
| 1517 | assert(Dependent->isIdentifier()); |
| 1518 | |
| 1519 | // <class-enum-type> ::= <name> |
| 1520 | // <name> ::= <nested-name> |
| 1521 | mangleUnresolvedPrefix(Dependent->getQualifier(), 0); |
| 1522 | mangleSourceName(Dependent->getIdentifier()); |
| 1523 | break; |
| 1524 | } |
| 1525 | |
| 1526 | case TemplateName::SubstTemplateTemplateParm: { |
| 1527 | // Substituted template parameters are mangled as the substituted |
| 1528 | // template. This will check for the substitution twice, which is |
| 1529 | // fine, but we have to return early so that we don't try to *add* |
| 1530 | // the substitution twice. |
| 1531 | SubstTemplateTemplateParmStorage *subst |
| 1532 | = TN.getAsSubstTemplateTemplateParm(); |
| 1533 | mangleType(subst->getReplacement()); |
| 1534 | return; |
| 1535 | } |
| 1536 | |
| 1537 | case TemplateName::SubstTemplateTemplateParmPack: { |
| 1538 | // FIXME: not clear how to mangle this! |
| 1539 | // template <template <class> class T...> class A { |
| 1540 | // template <template <class> class U...> void foo(B<T,U> x...); |
| 1541 | // }; |
| 1542 | Out << "_SUBSTPACK_"; |
| 1543 | break; |
| 1544 | } |
| 1545 | } |
| 1546 | |
| 1547 | addSubstitution(TN); |
| 1548 | } |
| 1549 | |
| 1550 | void |
| 1551 | CXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity) { |
| 1552 | switch (OO) { |
| 1553 | // <operator-name> ::= nw # new |
| 1554 | case OO_New: Out << "nw"; break; |
| 1555 | // ::= na # new[] |
| 1556 | case OO_Array_New: Out << "na"; break; |
| 1557 | // ::= dl # delete |
| 1558 | case OO_Delete: Out << "dl"; break; |
| 1559 | // ::= da # delete[] |
| 1560 | case OO_Array_Delete: Out << "da"; break; |
| 1561 | // ::= ps # + (unary) |
| 1562 | // ::= pl # + (binary or unknown) |
| 1563 | case OO_Plus: |
| 1564 | Out << (Arity == 1? "ps" : "pl"); break; |
| 1565 | // ::= ng # - (unary) |
| 1566 | // ::= mi # - (binary or unknown) |
| 1567 | case OO_Minus: |
| 1568 | Out << (Arity == 1? "ng" : "mi"); break; |
| 1569 | // ::= ad # & (unary) |
| 1570 | // ::= an # & (binary or unknown) |
| 1571 | case OO_Amp: |
| 1572 | Out << (Arity == 1? "ad" : "an"); break; |
| 1573 | // ::= de # * (unary) |
| 1574 | // ::= ml # * (binary or unknown) |
| 1575 | case OO_Star: |
| 1576 | // Use binary when unknown. |
| 1577 | Out << (Arity == 1? "de" : "ml"); break; |
| 1578 | // ::= co # ~ |
| 1579 | case OO_Tilde: Out << "co"; break; |
| 1580 | // ::= dv # / |
| 1581 | case OO_Slash: Out << "dv"; break; |
| 1582 | // ::= rm # % |
| 1583 | case OO_Percent: Out << "rm"; break; |
| 1584 | // ::= or # | |
| 1585 | case OO_Pipe: Out << "or"; break; |
| 1586 | // ::= eo # ^ |
| 1587 | case OO_Caret: Out << "eo"; break; |
| 1588 | // ::= aS # = |
| 1589 | case OO_Equal: Out << "aS"; break; |
| 1590 | // ::= pL # += |
| 1591 | case OO_PlusEqual: Out << "pL"; break; |
| 1592 | // ::= mI # -= |
| 1593 | case OO_MinusEqual: Out << "mI"; break; |
| 1594 | // ::= mL # *= |
| 1595 | case OO_StarEqual: Out << "mL"; break; |
| 1596 | // ::= dV # /= |
| 1597 | case OO_SlashEqual: Out << "dV"; break; |
| 1598 | // ::= rM # %= |
| 1599 | case OO_PercentEqual: Out << "rM"; break; |
| 1600 | // ::= aN # &= |
| 1601 | case OO_AmpEqual: Out << "aN"; break; |
| 1602 | // ::= oR # |= |
| 1603 | case OO_PipeEqual: Out << "oR"; break; |
| 1604 | // ::= eO # ^= |
| 1605 | case OO_CaretEqual: Out << "eO"; break; |
| 1606 | // ::= ls # << |
| 1607 | case OO_LessLess: Out << "ls"; break; |
| 1608 | // ::= rs # >> |
| 1609 | case OO_GreaterGreater: Out << "rs"; break; |
| 1610 | // ::= lS # <<= |
| 1611 | case OO_LessLessEqual: Out << "lS"; break; |
| 1612 | // ::= rS # >>= |
| 1613 | case OO_GreaterGreaterEqual: Out << "rS"; break; |
| 1614 | // ::= eq # == |
| 1615 | case OO_EqualEqual: Out << "eq"; break; |
| 1616 | // ::= ne # != |
| 1617 | case OO_ExclaimEqual: Out << "ne"; break; |
| 1618 | // ::= lt # < |
| 1619 | case OO_Less: Out << "lt"; break; |
| 1620 | // ::= gt # > |
| 1621 | case OO_Greater: Out << "gt"; break; |
| 1622 | // ::= le # <= |
| 1623 | case OO_LessEqual: Out << "le"; break; |
| 1624 | // ::= ge # >= |
| 1625 | case OO_GreaterEqual: Out << "ge"; break; |
| 1626 | // ::= nt # ! |
| 1627 | case OO_Exclaim: Out << "nt"; break; |
| 1628 | // ::= aa # && |
| 1629 | case OO_AmpAmp: Out << "aa"; break; |
| 1630 | // ::= oo # || |
| 1631 | case OO_PipePipe: Out << "oo"; break; |
| 1632 | // ::= pp # ++ |
| 1633 | case OO_PlusPlus: Out << "pp"; break; |
| 1634 | // ::= mm # -- |
| 1635 | case OO_MinusMinus: Out << "mm"; break; |
| 1636 | // ::= cm # , |
| 1637 | case OO_Comma: Out << "cm"; break; |
| 1638 | // ::= pm # ->* |
| 1639 | case OO_ArrowStar: Out << "pm"; break; |
| 1640 | // ::= pt # -> |
| 1641 | case OO_Arrow: Out << "pt"; break; |
| 1642 | // ::= cl # () |
| 1643 | case OO_Call: Out << "cl"; break; |
| 1644 | // ::= ix # [] |
| 1645 | case OO_Subscript: Out << "ix"; break; |
| 1646 | |
| 1647 | // ::= qu # ? |
| 1648 | // The conditional operator can't be overloaded, but we still handle it when |
| 1649 | // mangling expressions. |
| 1650 | case OO_Conditional: Out << "qu"; break; |
| 1651 | |
| 1652 | case OO_None: |
| 1653 | case NUM_OVERLOADED_OPERATORS: |
| 1654 | llvm_unreachable("Not an overloaded operator"); |
| 1655 | } |
| 1656 | } |
| 1657 | |
| 1658 | void CXXNameMangler::mangleQualifiers(Qualifiers Quals) { |
| 1659 | // <CV-qualifiers> ::= [r] [V] [K] # restrict (C99), volatile, const |
| 1660 | if (Quals.hasRestrict()) |
| 1661 | Out << 'r'; |
| 1662 | if (Quals.hasVolatile()) |
| 1663 | Out << 'V'; |
| 1664 | if (Quals.hasConst()) |
| 1665 | Out << 'K'; |
| 1666 | |
| 1667 | if (Quals.hasAddressSpace()) { |
| 1668 | // Extension: |
| 1669 | // |
| 1670 | // <type> ::= U <address-space-number> |
| 1671 | // |
| 1672 | // where <address-space-number> is a source name consisting of 'AS' |
| 1673 | // followed by the address space <number>. |
| 1674 | SmallString<64> ASString; |
Tanya Lattner | f21107b | 2013-02-08 01:07:32 +0000 | [diff] [blame] | 1675 | ASString = "AS" + llvm::utostr_32( |
| 1676 | Context.getASTContext().getTargetAddressSpace(Quals.getAddressSpace())); |
Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 1677 | Out << 'U' << ASString.size() << ASString; |
| 1678 | } |
| 1679 | |
| 1680 | StringRef LifetimeName; |
| 1681 | switch (Quals.getObjCLifetime()) { |
| 1682 | // Objective-C ARC Extension: |
| 1683 | // |
| 1684 | // <type> ::= U "__strong" |
| 1685 | // <type> ::= U "__weak" |
| 1686 | // <type> ::= U "__autoreleasing" |
| 1687 | case Qualifiers::OCL_None: |
| 1688 | break; |
| 1689 | |
| 1690 | case Qualifiers::OCL_Weak: |
| 1691 | LifetimeName = "__weak"; |
| 1692 | break; |
| 1693 | |
| 1694 | case Qualifiers::OCL_Strong: |
| 1695 | LifetimeName = "__strong"; |
| 1696 | break; |
| 1697 | |
| 1698 | case Qualifiers::OCL_Autoreleasing: |
| 1699 | LifetimeName = "__autoreleasing"; |
| 1700 | break; |
| 1701 | |
| 1702 | case Qualifiers::OCL_ExplicitNone: |
| 1703 | // The __unsafe_unretained qualifier is *not* mangled, so that |
| 1704 | // __unsafe_unretained types in ARC produce the same manglings as the |
| 1705 | // equivalent (but, naturally, unqualified) types in non-ARC, providing |
| 1706 | // better ABI compatibility. |
| 1707 | // |
| 1708 | // It's safe to do this because unqualified 'id' won't show up |
| 1709 | // in any type signatures that need to be mangled. |
| 1710 | break; |
| 1711 | } |
| 1712 | if (!LifetimeName.empty()) |
| 1713 | Out << 'U' << LifetimeName.size() << LifetimeName; |
| 1714 | } |
| 1715 | |
| 1716 | void CXXNameMangler::mangleRefQualifier(RefQualifierKind RefQualifier) { |
| 1717 | // <ref-qualifier> ::= R # lvalue reference |
| 1718 | // ::= O # rvalue-reference |
| 1719 | // Proposal to Itanium C++ ABI list on 1/26/11 |
| 1720 | switch (RefQualifier) { |
| 1721 | case RQ_None: |
| 1722 | break; |
| 1723 | |
| 1724 | case RQ_LValue: |
| 1725 | Out << 'R'; |
| 1726 | break; |
| 1727 | |
| 1728 | case RQ_RValue: |
| 1729 | Out << 'O'; |
| 1730 | break; |
| 1731 | } |
| 1732 | } |
| 1733 | |
| 1734 | void CXXNameMangler::mangleObjCMethodName(const ObjCMethodDecl *MD) { |
| 1735 | Context.mangleObjCMethodName(MD, Out); |
| 1736 | } |
| 1737 | |
| 1738 | void CXXNameMangler::mangleType(QualType T) { |
| 1739 | // If our type is instantiation-dependent but not dependent, we mangle |
| 1740 | // it as it was written in the source, removing any top-level sugar. |
| 1741 | // Otherwise, use the canonical type. |
| 1742 | // |
| 1743 | // FIXME: This is an approximation of the instantiation-dependent name |
| 1744 | // mangling rules, since we should really be using the type as written and |
| 1745 | // augmented via semantic analysis (i.e., with implicit conversions and |
| 1746 | // default template arguments) for any instantiation-dependent type. |
| 1747 | // Unfortunately, that requires several changes to our AST: |
| 1748 | // - Instantiation-dependent TemplateSpecializationTypes will need to be |
| 1749 | // uniqued, so that we can handle substitutions properly |
| 1750 | // - Default template arguments will need to be represented in the |
| 1751 | // TemplateSpecializationType, since they need to be mangled even though |
| 1752 | // they aren't written. |
| 1753 | // - Conversions on non-type template arguments need to be expressed, since |
| 1754 | // they can affect the mangling of sizeof/alignof. |
| 1755 | if (!T->isInstantiationDependentType() || T->isDependentType()) |
| 1756 | T = T.getCanonicalType(); |
| 1757 | else { |
| 1758 | // Desugar any types that are purely sugar. |
| 1759 | do { |
| 1760 | // Don't desugar through template specialization types that aren't |
| 1761 | // type aliases. We need to mangle the template arguments as written. |
| 1762 | if (const TemplateSpecializationType *TST |
| 1763 | = dyn_cast<TemplateSpecializationType>(T)) |
| 1764 | if (!TST->isTypeAlias()) |
| 1765 | break; |
| 1766 | |
| 1767 | QualType Desugared |
| 1768 | = T.getSingleStepDesugaredType(Context.getASTContext()); |
| 1769 | if (Desugared == T) |
| 1770 | break; |
| 1771 | |
| 1772 | T = Desugared; |
| 1773 | } while (true); |
| 1774 | } |
| 1775 | SplitQualType split = T.split(); |
| 1776 | Qualifiers quals = split.Quals; |
| 1777 | const Type *ty = split.Ty; |
| 1778 | |
| 1779 | bool isSubstitutable = quals || !isa<BuiltinType>(T); |
| 1780 | if (isSubstitutable && mangleSubstitution(T)) |
| 1781 | return; |
| 1782 | |
| 1783 | // If we're mangling a qualified array type, push the qualifiers to |
| 1784 | // the element type. |
| 1785 | if (quals && isa<ArrayType>(T)) { |
| 1786 | ty = Context.getASTContext().getAsArrayType(T); |
| 1787 | quals = Qualifiers(); |
| 1788 | |
| 1789 | // Note that we don't update T: we want to add the |
| 1790 | // substitution at the original type. |
| 1791 | } |
| 1792 | |
| 1793 | if (quals) { |
| 1794 | mangleQualifiers(quals); |
| 1795 | // Recurse: even if the qualified type isn't yet substitutable, |
| 1796 | // the unqualified type might be. |
| 1797 | mangleType(QualType(ty, 0)); |
| 1798 | } else { |
| 1799 | switch (ty->getTypeClass()) { |
| 1800 | #define ABSTRACT_TYPE(CLASS, PARENT) |
| 1801 | #define NON_CANONICAL_TYPE(CLASS, PARENT) \ |
| 1802 | case Type::CLASS: \ |
| 1803 | llvm_unreachable("can't mangle non-canonical type " #CLASS "Type"); \ |
| 1804 | return; |
| 1805 | #define TYPE(CLASS, PARENT) \ |
| 1806 | case Type::CLASS: \ |
| 1807 | mangleType(static_cast<const CLASS##Type*>(ty)); \ |
| 1808 | break; |
| 1809 | #include "clang/AST/TypeNodes.def" |
| 1810 | } |
| 1811 | } |
| 1812 | |
| 1813 | // Add the substitution. |
| 1814 | if (isSubstitutable) |
| 1815 | addSubstitution(T); |
| 1816 | } |
| 1817 | |
| 1818 | void CXXNameMangler::mangleNameOrStandardSubstitution(const NamedDecl *ND) { |
| 1819 | if (!mangleStandardSubstitution(ND)) |
| 1820 | mangleName(ND); |
| 1821 | } |
| 1822 | |
| 1823 | void CXXNameMangler::mangleType(const BuiltinType *T) { |
| 1824 | // <type> ::= <builtin-type> |
| 1825 | // <builtin-type> ::= v # void |
| 1826 | // ::= w # wchar_t |
| 1827 | // ::= b # bool |
| 1828 | // ::= c # char |
| 1829 | // ::= a # signed char |
| 1830 | // ::= h # unsigned char |
| 1831 | // ::= s # short |
| 1832 | // ::= t # unsigned short |
| 1833 | // ::= i # int |
| 1834 | // ::= j # unsigned int |
| 1835 | // ::= l # long |
| 1836 | // ::= m # unsigned long |
| 1837 | // ::= x # long long, __int64 |
| 1838 | // ::= y # unsigned long long, __int64 |
| 1839 | // ::= n # __int128 |
| 1840 | // UNSUPPORTED: ::= o # unsigned __int128 |
| 1841 | // ::= f # float |
| 1842 | // ::= d # double |
| 1843 | // ::= e # long double, __float80 |
| 1844 | // UNSUPPORTED: ::= g # __float128 |
| 1845 | // UNSUPPORTED: ::= Dd # IEEE 754r decimal floating point (64 bits) |
| 1846 | // UNSUPPORTED: ::= De # IEEE 754r decimal floating point (128 bits) |
| 1847 | // UNSUPPORTED: ::= Df # IEEE 754r decimal floating point (32 bits) |
| 1848 | // ::= Dh # IEEE 754r half-precision floating point (16 bits) |
| 1849 | // ::= Di # char32_t |
| 1850 | // ::= Ds # char16_t |
| 1851 | // ::= Dn # std::nullptr_t (i.e., decltype(nullptr)) |
| 1852 | // ::= u <source-name> # vendor extended type |
| 1853 | switch (T->getKind()) { |
| 1854 | case BuiltinType::Void: Out << 'v'; break; |
| 1855 | case BuiltinType::Bool: Out << 'b'; break; |
| 1856 | case BuiltinType::Char_U: case BuiltinType::Char_S: Out << 'c'; break; |
| 1857 | case BuiltinType::UChar: Out << 'h'; break; |
| 1858 | case BuiltinType::UShort: Out << 't'; break; |
| 1859 | case BuiltinType::UInt: Out << 'j'; break; |
| 1860 | case BuiltinType::ULong: Out << 'm'; break; |
| 1861 | case BuiltinType::ULongLong: Out << 'y'; break; |
| 1862 | case BuiltinType::UInt128: Out << 'o'; break; |
| 1863 | case BuiltinType::SChar: Out << 'a'; break; |
| 1864 | case BuiltinType::WChar_S: |
| 1865 | case BuiltinType::WChar_U: Out << 'w'; break; |
| 1866 | case BuiltinType::Char16: Out << "Ds"; break; |
| 1867 | case BuiltinType::Char32: Out << "Di"; break; |
| 1868 | case BuiltinType::Short: Out << 's'; break; |
| 1869 | case BuiltinType::Int: Out << 'i'; break; |
| 1870 | case BuiltinType::Long: Out << 'l'; break; |
| 1871 | case BuiltinType::LongLong: Out << 'x'; break; |
| 1872 | case BuiltinType::Int128: Out << 'n'; break; |
| 1873 | case BuiltinType::Half: Out << "Dh"; break; |
| 1874 | case BuiltinType::Float: Out << 'f'; break; |
| 1875 | case BuiltinType::Double: Out << 'd'; break; |
| 1876 | case BuiltinType::LongDouble: Out << 'e'; break; |
| 1877 | case BuiltinType::NullPtr: Out << "Dn"; break; |
| 1878 | |
| 1879 | #define BUILTIN_TYPE(Id, SingletonId) |
| 1880 | #define PLACEHOLDER_TYPE(Id, SingletonId) \ |
| 1881 | case BuiltinType::Id: |
| 1882 | #include "clang/AST/BuiltinTypes.def" |
| 1883 | case BuiltinType::Dependent: |
| 1884 | llvm_unreachable("mangling a placeholder type"); |
| 1885 | case BuiltinType::ObjCId: Out << "11objc_object"; break; |
| 1886 | case BuiltinType::ObjCClass: Out << "10objc_class"; break; |
| 1887 | case BuiltinType::ObjCSel: Out << "13objc_selector"; break; |
Guy Benyei | b13621d | 2012-12-18 14:38:23 +0000 | [diff] [blame] | 1888 | case BuiltinType::OCLImage1d: Out << "11ocl_image1d"; break; |
| 1889 | case BuiltinType::OCLImage1dArray: Out << "16ocl_image1darray"; break; |
| 1890 | case BuiltinType::OCLImage1dBuffer: Out << "17ocl_image1dbuffer"; break; |
| 1891 | case BuiltinType::OCLImage2d: Out << "11ocl_image2d"; break; |
| 1892 | case BuiltinType::OCLImage2dArray: Out << "16ocl_image2darray"; break; |
| 1893 | case BuiltinType::OCLImage3d: Out << "11ocl_image3d"; break; |
Guy Benyei | 21f18c4 | 2013-02-07 10:55:47 +0000 | [diff] [blame] | 1894 | case BuiltinType::OCLSampler: Out << "11ocl_sampler"; break; |
Guy Benyei | e6b9d80 | 2013-01-20 12:31:11 +0000 | [diff] [blame] | 1895 | case BuiltinType::OCLEvent: Out << "9ocl_event"; break; |
Guy Benyei | 7f92f2d | 2012-12-18 14:30:41 +0000 | [diff] [blame] | 1896 | } |
| 1897 | } |
| 1898 | |
| 1899 | // <type> ::= <function-type> |
| 1900 | // <function-type> ::= [<CV-qualifiers>] F [Y] |
| 1901 | // <bare-function-type> [<ref-qualifier>] E |
| 1902 | // (Proposal to cxx-abi-dev, 2012-05-11) |
| 1903 | void CXXNameMangler::mangleType(const FunctionProtoType *T) { |
| 1904 | // Mangle CV-qualifiers, if present. These are 'this' qualifiers, |
| 1905 | // e.g. "const" in "int (A::*)() const". |
| 1906 | mangleQualifiers(Qualifiers::fromCVRMask(T->getTypeQuals())); |
| 1907 | |
| 1908 | Out << 'F'; |
| 1909 | |
| 1910 | // FIXME: We don't have enough information in the AST to produce the 'Y' |
| 1911 | // encoding for extern "C" function types. |
| 1912 | mangleBareFunctionType(T, /*MangleReturnType=*/true); |
| 1913 | |
| 1914 | // Mangle the ref-qualifier, if present. |
| 1915 | mangleRefQualifier(T->getRefQualifier()); |
| 1916 | |
| 1917 | Out << 'E'; |
| 1918 | } |
| 1919 | void CXXNameMangler::mangleType(const FunctionNoProtoType *T) { |
| 1920 | llvm_unreachable("Can't mangle K&R function prototypes"); |
| 1921 | } |
| 1922 | void CXXNameMangler::mangleBareFunctionType(const FunctionType *T, |
| 1923 | bool MangleReturnType) { |
| 1924 | // We should never be mangling something without a prototype. |
| 1925 | const FunctionProtoType *Proto = cast<FunctionProtoType>(T); |
| 1926 | |
| 1927 | // Record that we're in a function type. See mangleFunctionParam |
| 1928 | // for details on what we're trying to achieve here. |
| 1929 | FunctionTypeDepthState saved = FunctionTypeDepth.push(); |
| 1930 | |
| 1931 | // <bare-function-type> ::= <signature type>+ |
| 1932 | if (MangleReturnType) { |
| 1933 | FunctionTypeDepth.enterResultType(); |
| 1934 | mangleType(Proto->getResultType()); |
| 1935 | FunctionTypeDepth.leaveResultType(); |
| 1936 | } |
| 1937 | |
| 1938 | if (Proto->getNumArgs() == 0 && !Proto->isVariadic()) { |
| 1939 | // <builtin-type> ::= v # void |
| 1940 | Out << 'v'; |
| 1941 | |
| 1942 | FunctionTypeDepth.pop(saved); |
| 1943 | return; |
| 1944 | } |
| 1945 | |
| 1946 | for (FunctionProtoType::arg_type_iterator Arg = Proto->arg_type_begin(), |
| 1947 | ArgEnd = Proto->arg_type_end(); |
| 1948 | Arg != ArgEnd; ++Arg) |
| 1949 | mangleType(Context.getASTContext().getSignatureParameterType(*Arg)); |
| 1950 | |
| 1951 | FunctionTypeDepth.pop(saved); |
| 1952 | |
| 1953 | // <builtin-type> ::= z # ellipsis |
| 1954 | if (Proto->isVariadic()) |
| 1955 | Out << 'z'; |
| 1956 | } |
| 1957 | |
| 1958 | // <type> ::= <class-enum-type> |
| 1959 | // <class-enum-type> ::= <name> |
| 1960 | void CXXNameMangler::mangleType(const UnresolvedUsingType *T) { |
| 1961 | mangleName(T->getDecl()); |
| 1962 | } |
| 1963 | |
| 1964 | // <type> ::= <class-enum-type> |
| 1965 | // <class-enum-type> ::= <name> |
| 1966 | void CXXNameMangler::mangleType(const EnumType *T) { |
| 1967 | mangleType(static_cast<const TagType*>(T)); |
| 1968 | } |
| 1969 | void CXXNameMangler::mangleType(const RecordType *T) { |
| 1970 | mangleType(static_cast<const TagType*>(T)); |
| 1971 | } |
| 1972 | void CXXNameMangler::mangleType(const TagType *T) { |
| 1973 | mangleName(T->getDecl()); |
| 1974 | } |
| 1975 | |
| 1976 | // <type> ::= <array-type> |
| 1977 | // <array-type> ::= A <positive dimension number> _ <element type> |
| 1978 | // ::= A [<dimension expression>] _ <element type> |
| 1979 | void CXXNameMangler::mangleType(const ConstantArrayType *T) { |
| 1980 | Out << 'A' << T->getSize() << '_'; |
| 1981 | mangleType(T->getElementType()); |
| 1982 | } |
| 1983 | void CXXNameMangler::mangleType(const VariableArrayType *T) { |
| 1984 | Out << 'A'; |
| 1985 | // decayed vla types (size 0) will just be skipped. |
| 1986 | if (T->getSizeExpr()) |
| 1987 | mangleExpression(T->getSizeExpr()); |
| 1988 | Out << '_'; |
| 1989 | mangleType(T->getElementType()); |
| 1990 | } |
| 1991 | void CXXNameMangler::mangleType(const DependentSizedArrayType *T) { |
| 1992 | Out << 'A'; |
| 1993 | mangleExpression(T->getSizeExpr()); |
| 1994 | Out << '_'; |
| 1995 | mangleType(T->getElementType()); |
| 1996 | } |
| 1997 | void CXXNameMangler::mangleType(const IncompleteArrayType *T) { |
| 1998 | Out << "A_"; |
| 1999 | mangleType(T->getElementType()); |
| 2000 | } |
| 2001 | |
| 2002 | // <type> ::= <pointer-to-member-type> |
| 2003 | // <pointer-to-member-type> ::= M <class type> <member type> |
| 2004 | void CXXNameMangler::mangleType(const MemberPointerType *T) { |
| 2005 | Out << 'M'; |
| 2006 | mangleType(QualType(T->getClass(), 0)); |
| 2007 | QualType PointeeType = T->getPointeeType(); |
| 2008 | if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(PointeeType)) { |
| 2009 | mangleType(FPT); |
| 2010 | |
| 2011 | // Itanium C++ ABI 5.1.8: |
| 2012 | // |
| 2013 | // The type of a non-static member function is considered to be different, |
| 2014 | // for the purposes of substitution, from the type of a namespace-scope or |
| 2015 | // static member function whose type appears similar. The types of two |
| 2016 | // non-static member functions are considered to be different, for the |
| 2017 | // purposes of substitution, if the functions are members of different |
| 2018 | // classes. In other words, for the purposes of substitution, the class of |
| 2019 | // which the function is a member is considered part of the type of |
| 2020 | // function. |
| 2021 | |
| 2022 | // Given that we already substitute member function pointers as a |
| 2023 | // whole, the net effect of this rule is just to unconditionally |
| 2024 | // suppress substitution on the function type in a member pointer. |
| 2025 | // We increment the SeqID here to emulate adding an entry to the |
| 2026 | // substitution table. |
| 2027 | ++SeqID; |
| 2028 | } else |
| 2029 | mangleType(PointeeType); |
| 2030 | } |
| 2031 | |
| 2032 | // <type> ::= <template-param> |
| 2033 | void CXXNameMangler::mangleType(const TemplateTypeParmType *T) { |
| 2034 | mangleTemplateParameter(T->getIndex()); |
| 2035 | } |
| 2036 | |
| 2037 | // <type> ::= <template-param> |
| 2038 | void CXXNameMangler::mangleType(const SubstTemplateTypeParmPackType *T) { |
| 2039 | // FIXME: not clear how to mangle this! |
| 2040 | // template <class T...> class A { |
| 2041 | // template <class U...> void foo(T(*)(U) x...); |
| 2042 | // }; |
| 2043 | Out << "_SUBSTPACK_"; |
| 2044 | } |
| 2045 | |
| 2046 | // <type> ::= P <type> # pointer-to |
| 2047 | void CXXNameMangler::mangleType(const PointerType *T) { |
| 2048 | Out << 'P'; |
| 2049 | mangleType(T->getPointeeType()); |
| 2050 | } |
| 2051 | void CXXNameMangler::mangleType(const ObjCObjectPointerType *T) { |
| 2052 | Out << 'P'; |
| 2053 | mangleType(T->getPointeeType()); |
| 2054 | } |
| 2055 | |
| 2056 | // <type> ::= R <type> # reference-to |
| 2057 | void CXXNameMangler::mangleType(const LValueReferenceType *T) { |
| 2058 | Out << 'R'; |
| 2059 | mangleType(T->getPointeeType()); |
| 2060 | } |
| 2061 | |
| 2062 | // <type> ::= O <type> # rvalue reference-to (C++0x) |
| 2063 | void CXXNameMangler::mangleType(const RValueReferenceType *T) { |
| 2064 | Out << 'O'; |
| 2065 | mangleType(T->getPointeeType()); |
| 2066 | } |
| 2067 | |
| 2068 | // <type> ::= C <type> # complex pair (C 2000) |
| 2069 | void CXXNameMangler::mangleType(const ComplexType *T) { |
| 2070 | Out << 'C'; |
| 2071 | mangleType(T->getElementType()); |
| 2072 | } |
| 2073 | |
| 2074 | // ARM's ABI for Neon vector types specifies that they should be mangled as |
| 2075 | // if they are structs (to match ARM's initial implementation). The |
| 2076 | // vector type must be one of the special types predefined by ARM. |
| 2077 | void CXXNameMangler::mangleNeonVectorType(const VectorType *T) { |
| 2078 | QualType EltType = T->getElementType(); |
| 2079 | assert(EltType->isBuiltinType() && "Neon vector element not a BuiltinType"); |
| 2080 | const char *EltName = 0; |
| 2081 | if (T->getVectorKind() == VectorType::NeonPolyVector) { |
| 2082 | switch (cast<BuiltinType>(EltType)->getKind()) { |
| 2083 | case BuiltinType::SChar: EltName = "poly8_t"; break; |
| 2084 | case BuiltinType::Short: EltName = "poly16_t"; break; |
| 2085 | default: llvm_unreachable("unexpected Neon polynomial vector element type"); |
| 2086 | } |
| 2087 | } else { |
| 2088 | switch (cast<BuiltinType>(EltType)->getKind()) { |
| 2089 | case BuiltinType::SChar: EltName = "int8_t"; break; |
| 2090 | case BuiltinType::UChar: EltName = "uint8_t"; break; |
| 2091 | case BuiltinType::Short: EltName = "int16_t"; break; |
| 2092 | case BuiltinType::UShort: EltName = "uint16_t"; break; |
| 2093 | case BuiltinType::Int: EltName = "int32_t"; break; |
| 2094 | case BuiltinType::UInt: EltName = "uint32_t"; break; |
| 2095 | case BuiltinType::LongLong: EltName = "int64_t"; break; |
| 2096 | case BuiltinType::ULongLong: EltName = "uint64_t"; break; |
| 2097 | case BuiltinType::Float: EltName = "float32_t"; break; |
| 2098 | default: llvm_unreachable("unexpected Neon vector element type"); |
| 2099 | } |
| 2100 | } |
| 2101 | const char *BaseName = 0; |
| 2102 | unsigned BitSize = (T->getNumElements() * |
| 2103 | getASTContext().getTypeSize(EltType)); |
| 2104 | if (BitSize == 64) |
| 2105 | BaseName = "__simd64_"; |
| 2106 | else { |
| 2107 | assert(BitSize == 128 && "Neon vector type not 64 or 128 bits"); |
| 2108 | BaseName = "__simd128_"; |
| 2109 | } |
| 2110 | Out << strlen(BaseName) + strlen(EltName); |
| 2111 | Out << BaseName << EltName; |
| 2112 | } |
| 2113 | |
| 2114 | // GNU extension: vector types |
| 2115 | // <type> ::= <vector-type> |
| 2116 | // <vector-type> ::= Dv <positive dimension number> _ |
| 2117 | // <extended element type> |
| 2118 | // ::= Dv [<dimension expression>] _ <element type> |
| 2119 | // <extended element type> ::= <element type> |
| 2120 | // ::= p # AltiVec vector pixel |
| 2121 | // ::= b # Altivec vector bool |
| 2122 | void CXXNameMangler::mangleType(const VectorType *T) { |
| 2123 | if ((T->getVectorKind() == VectorType::NeonVector || |
| 2124 | T->getVectorKind() == VectorType::NeonPolyVector)) { |
| 2125 | mangleNeonVectorType(T); |
| 2126 | return; |
| 2127 | } |
| 2128 | Out << "Dv" << T->getNumElements() << '_'; |
| 2129 | if (T->getVectorKind() == VectorType::AltiVecPixel) |
| 2130 | Out << 'p'; |
| 2131 | else if (T->getVectorKind() == VectorType::AltiVecBool) |
| 2132 | Out << 'b'; |
| 2133 | else |
| 2134 | mangleType(T->getElementType()); |
| 2135 | } |
| 2136 | void CXXNameMangler::mangleType(const ExtVectorType *T) { |
| 2137 | mangleType(static_cast<const VectorType*>(T)); |
| 2138 | } |
| 2139 | void CXXNameMangler::mangleType(const DependentSizedExtVectorType *T) { |
| 2140 | Out << "Dv"; |
| 2141 | mangleExpression(T->getSizeExpr()); |
| 2142 | Out << '_'; |
| 2143 | mangleType(T->getElementType()); |
| 2144 | } |
| 2145 | |
| 2146 | void CXXNameMangler::mangleType(const PackExpansionType *T) { |
| 2147 | // <type> ::= Dp <type> # pack expansion (C++0x) |
| 2148 | Out << "Dp"; |
| 2149 | mangleType(T->getPattern()); |
| 2150 | } |
| 2151 | |
| 2152 | void CXXNameMangler::mangleType(const ObjCInterfaceType *T) { |
| 2153 | mangleSourceName(T->getDecl()->getIdentifier()); |
| 2154 | } |
| 2155 | |
| 2156 | void CXXNameMangler::mangleType(const ObjCObjectType *T) { |
| 2157 | // We don't allow overloading by different protocol qualification, |
| 2158 | // so mangling them isn't necessary. |
| 2159 | mangleType(T->getBaseType()); |
| 2160 | } |
| 2161 | |
| 2162 | void CXXNameMangler::mangleType(const BlockPointerType *T) { |
| 2163 | Out << "U13block_pointer"; |
| 2164 | mangleType(T->getPointeeType()); |
| 2165 | } |
| 2166 | |
| 2167 | void CXXNameMangler::mangleType(const InjectedClassNameType *T) { |
| 2168 | // Mangle injected class name types as if the user had written the |
| 2169 | // specialization out fully. It may not actually be possible to see |
| 2170 | // this mangling, though. |
| 2171 | mangleType(T->getInjectedSpecializationType()); |
| 2172 | } |
| 2173 | |
| 2174 | void CXXNameMangler::mangleType(const TemplateSpecializationType *T) { |
| 2175 | if (TemplateDecl *TD = T->getTemplateName().getAsTemplateDecl()) { |
| 2176 | mangleName(TD, T->getArgs(), T->getNumArgs()); |
| 2177 | } else { |
| 2178 | if (mangleSubstitution(QualType(T, 0))) |
| 2179 | return; |
| 2180 | |
| 2181 | mangleTemplatePrefix(T->getTemplateName()); |
| 2182 | |
| 2183 | // FIXME: GCC does not appear to mangle the template arguments when |
| 2184 | // the template in question is a dependent template name. Should we |
| 2185 | // emulate that badness? |
| 2186 | mangleTemplateArgs(T->getArgs(), T->getNumArgs()); |
| 2187 | addSubstitution(QualType(T, 0)); |
| 2188 | } |
| 2189 | } |
| 2190 | |
| 2191 | void CXXNameMangler::mangleType(const DependentNameType *T) { |
| 2192 | // Typename types are always nested |
| 2193 | Out << 'N'; |
| 2194 | manglePrefix(T->getQualifier()); |
| 2195 | mangleSourceName(T->getIdentifier()); |
| 2196 | Out << 'E'; |
| 2197 | } |
| 2198 | |
| 2199 | void CXXNameMangler::mangleType(const DependentTemplateSpecializationType *T) { |
| 2200 | // Dependently-scoped template types are nested if they have a prefix. |
| 2201 | Out << 'N'; |
| 2202 | |
| 2203 | // TODO: avoid making this TemplateName. |
| 2204 | TemplateName Prefix = |
| 2205 | getASTContext().getDependentTemplateName(T->getQualifier(), |
| 2206 | T->getIdentifier()); |
| 2207 | mangleTemplatePrefix(Prefix); |
| 2208 | |
| 2209 | // FIXME: GCC does not appear to mangle the template arguments when |
| 2210 | // the template in question is a dependent template name. Should we |
| 2211 | // emulate that badness? |
| 2212 | mangleTemplateArgs(T->getArgs(), T->getNumArgs()); |
| 2213 | Out << 'E'; |
| 2214 | } |
| 2215 | |
| 2216 | void CXXNameMangler::mangleType(const TypeOfType *T) { |
| 2217 | // FIXME: this is pretty unsatisfactory, but there isn't an obvious |
| 2218 | // "extension with parameters" mangling. |
| 2219 | Out << "u6typeof"; |
| 2220 | } |
| 2221 | |
| 2222 | void CXXNameMangler::mangleType(const TypeOfExprType *T) { |
| 2223 | // FIXME: this is pretty unsatisfactory, but there isn't an obvious |
| 2224 | // "extension with parameters" mangling. |
| 2225 | Out << "u6typeof"; |
| 2226 | } |
| 2227 | |
| 2228 | void CXXNameMangler::mangleType(const DecltypeType *T) { |
| 2229 | Expr *E = T->getUnderlyingExpr(); |
| 2230 | |
| 2231 | // type ::= Dt <expression> E # decltype of an id-expression |
| 2232 | // # or class member access |
| 2233 | // ::= DT <expression> E # decltype of an expression |
| 2234 | |
| 2235 | // This purports to be an exhaustive list of id-expressions and |
| 2236 | // class member accesses. Note that we do not ignore parentheses; |
| 2237 | // parentheses change the semantics of decltype for these |
| 2238 | // expressions (and cause the mangler to use the other form). |
| 2239 | if (isa<DeclRefExpr>(E) || |
| 2240 | isa<MemberExpr>(E) || |
| 2241 | isa<UnresolvedLookupExpr>(E) || |
| 2242 | isa<DependentScopeDeclRefExpr>(E) || |
| 2243 | isa<CXXDependentScopeMemberExpr>(E) || |
| 2244 | isa<UnresolvedMemberExpr>(E)) |
| 2245 | Out << "Dt"; |
| 2246 | else |
| 2247 | Out << "DT"; |
| 2248 | mangleExpression(E); |
| 2249 | Out << 'E'; |
| 2250 | } |
| 2251 | |
| 2252 | void CXXNameMangler::mangleType(const UnaryTransformType *T) { |
| 2253 | // If this is dependent, we need to record that. If not, we simply |
| 2254 | // mangle it as the underlying type since they are equivalent. |
| 2255 | if (T->isDependentType()) { |
| 2256 | Out << 'U'; |
| 2257 | |
| 2258 | switch (T->getUTTKind()) { |
| 2259 | case UnaryTransformType::EnumUnderlyingType: |
| 2260 | Out << "3eut"; |
| 2261 | break; |
| 2262 | } |
| 2263 | } |
| 2264 | |
| 2265 | mangleType(T->getUnderlyingType()); |
| 2266 | } |
| 2267 | |
| 2268 | void CXXNameMangler::mangleType(const AutoType *T) { |
| 2269 | QualType D = T->getDeducedType(); |
| 2270 | // <builtin-type> ::= Da # dependent auto |
| 2271 | if (D.isNull()) |
| 2272 | Out << "Da"; |
| 2273 | else |
| 2274 | mangleType(D); |
| 2275 | } |
| 2276 | |
| 2277 | void CXXNameMangler::mangleType(const AtomicType *T) { |
| 2278 | // <type> ::= U <source-name> <type> # vendor extended type qualifier |
| 2279 | // (Until there's a standardized mangling...) |
| 2280 | Out << "U7_Atomic"; |
| 2281 | mangleType(T->getValueType()); |
| 2282 | } |
| 2283 | |
| 2284 | void CXXNameMangler::mangleIntegerLiteral(QualType T, |
| 2285 | const llvm::APSInt &Value) { |
| 2286 | // <expr-primary> ::= L <type> <value number> E # integer literal |
| 2287 | Out << 'L'; |
| 2288 | |
| 2289 | mangleType(T); |
| 2290 | if (T->isBooleanType()) { |
| 2291 | // Boolean values are encoded as 0/1. |
| 2292 | Out << (Value.getBoolValue() ? '1' : '0'); |
| 2293 | } else { |
| 2294 | mangleNumber(Value); |
| 2295 | } |
| 2296 | Out << 'E'; |
| 2297 | |
| 2298 | } |
| 2299 | |
| 2300 | /// Mangles a member expression. |
| 2301 | void CXXNameMangler::mangleMemberExpr(const Expr *base, |
| 2302 | bool isArrow, |
| 2303 | NestedNameSpecifier *qualifier, |
| 2304 | NamedDecl *firstQualifierLookup, |
| 2305 | DeclarationName member, |
| 2306 | unsigned arity) { |
| 2307 | // <expression> ::= dt <expression> <unresolved-name> |
| 2308 | // ::= pt <expression> <unresolved-name> |
| 2309 | if (base) { |
| 2310 | if (base->isImplicitCXXThis()) { |
| 2311 | // Note: GCC mangles member expressions to the implicit 'this' as |
| 2312 | // *this., whereas we represent them as this->. The Itanium C++ ABI |
| 2313 | // does not specify anything here, so we follow GCC. |
| 2314 | Out << "dtdefpT"; |
| 2315 | } else { |
| 2316 | Out << (isArrow ? "pt" : "dt"); |
| 2317 | mangleExpression(base); |
| 2318 | } |
| 2319 | } |
| 2320 | mangleUnresolvedName(qualifier, firstQualifierLookup, member, arity); |
| 2321 | } |
| 2322 | |
| 2323 | /// Look at the callee of the given call expression and determine if |
| 2324 | /// it's a parenthesized id-expression which would have triggered ADL |
| 2325 | /// otherwise. |
| 2326 | static bool isParenthesizedADLCallee(const CallExpr *call) { |
| 2327 | const Expr *callee = call->getCallee(); |
| 2328 | const Expr *fn = callee->IgnoreParens(); |
| 2329 | |
| 2330 | // Must be parenthesized. IgnoreParens() skips __extension__ nodes, |
| 2331 | // too, but for those to appear in the callee, it would have to be |
| 2332 | // parenthesized. |
| 2333 | if (callee == fn) return false; |
| 2334 | |
| 2335 | // Must be an unresolved lookup. |
| 2336 | const UnresolvedLookupExpr *lookup = dyn_cast<UnresolvedLookupExpr>(fn); |
| 2337 | if (!lookup) return false; |
| 2338 | |
| 2339 | assert(!lookup->requiresADL()); |
| 2340 | |
| 2341 | // Must be an unqualified lookup. |
| 2342 | if (lookup->getQualifier()) return false; |
| 2343 | |
| 2344 | // Must not have found a class member. Note that if one is a class |
| 2345 | // member, they're all class members. |
| 2346 | if (lookup->getNumDecls() > 0 && |
| 2347 | (*lookup->decls_begin())->isCXXClassMember()) |
| 2348 | return false; |
| 2349 | |
| 2350 | // Otherwise, ADL would have been triggered. |
| 2351 | return true; |
| 2352 | } |
| 2353 | |
| 2354 | void CXXNameMangler::mangleExpression(const Expr *E, unsigned Arity) { |
| 2355 | // <expression> ::= <unary operator-name> <expression> |
| 2356 | // ::= <binary operator-name> <expression> <expression> |
| 2357 | // ::= <trinary operator-name> <expression> <expression> <expression> |
| 2358 | // ::= cv <type> expression # conversion with one argument |
| 2359 | // ::= cv <type> _ <expression>* E # conversion with a different number of arguments |
| 2360 | // ::= st <type> # sizeof (a type) |
| 2361 | // ::= at <type> # alignof (a type) |
| 2362 | // ::= <template-param> |
| 2363 | // ::= <function-param> |
| 2364 | // ::= sr <type> <unqualified-name> # dependent name |
| 2365 | // ::= sr <type> <unqualified-name> <template-args> # dependent template-id |
| 2366 | // ::= ds <expression> <expression> # expr.*expr |
| 2367 | // ::= sZ <template-param> # size of a parameter pack |
| 2368 | // ::= sZ <function-param> # size of a function parameter pack |
| 2369 | // ::= <expr-primary> |
| 2370 | // <expr-primary> ::= L <type> <value number> E # integer literal |
| 2371 | // ::= L <type <value float> E # floating literal |
| 2372 | // ::= L <mangled-name> E # external name |
| 2373 | // ::= fpT # 'this' expression |
| 2374 | QualType ImplicitlyConvertedToType; |
| 2375 | |
| 2376 | recurse: |
| 2377 | switch (E->getStmtClass()) { |
| 2378 | case Expr::NoStmtClass: |
| 2379 | #define ABSTRACT_STMT(Type) |
| 2380 | #define EXPR(Type, Base) |
| 2381 | #define STMT(Type, Base) \ |
| 2382 | case Expr::Type##Class: |
| 2383 | #include "clang/AST/StmtNodes.inc" |
| 2384 | // fallthrough |
| 2385 | |
| 2386 | // These all can only appear in local or variable-initialization |
| 2387 | // contexts and so should never appear in a mangling. |
| 2388 | case Expr::AddrLabelExprClass: |
| 2389 | case Expr::DesignatedInitExprClass: |
| 2390 | case Expr::ImplicitValueInitExprClass: |
| 2391 | case Expr::ParenListExprClass: |
| 2392 | case Expr::LambdaExprClass: |
| 2393 | llvm_unreachable("unexpected statement kind"); |
| 2394 | |
| 2395 | // FIXME: invent manglings for all these. |
| 2396 | case Expr::BlockExprClass: |
| 2397 | case Expr::CXXPseudoDestructorExprClass: |
| 2398 | case Expr::ChooseExprClass: |
| 2399 | case Expr::CompoundLiteralExprClass: |
| 2400 | case Expr::ExtVectorElementExprClass: |
| 2401 | case Expr::GenericSelectionExprClass: |
| 2402 | case Expr::ObjCEncodeExprClass: |
| 2403 | case Expr::ObjCIsaExprClass: |
| 2404 | case Expr::ObjCIvarRefExprClass: |
| 2405 | case Expr::ObjCMessageExprClass: |
| 2406 | case Expr::ObjCPropertyRefExprClass: |
| 2407 | case Expr::ObjCProtocolExprClass: |
| 2408 | case Expr::ObjCSelectorExprClass: |
| 2409 | case Expr::ObjCStringLiteralClass: |
| 2410 | case Expr::ObjCBoxedExprClass: |
| 2411 | case Expr::ObjCArrayLiteralClass: |
| 2412 | case Expr::ObjCDictionaryLiteralClass: |
| 2413 | case Expr::ObjCSubscriptRefExprClass: |
| 2414 | case Expr::ObjCIndirectCopyRestoreExprClass: |
| 2415 | case Expr::OffsetOfExprClass: |
| 2416 | case Expr::PredefinedExprClass: |
| 2417 | case Expr::ShuffleVectorExprClass: |
| 2418 | case Expr::StmtExprClass: |
| 2419 | case Expr::UnaryTypeTraitExprClass: |
| 2420 | case Expr::BinaryTypeTraitExprClass: |
| 2421 | case Expr::TypeTraitExprClass: |
| 2422 | case Expr::ArrayTypeTraitExprClass: |
| 2423 | case Expr::ExpressionTraitExprClass: |
| 2424 | case Expr::VAArgExprClass: |
| 2425 | case Expr::CXXUuidofExprClass: |
| 2426 | case Expr::CUDAKernelCallExprClass: |
| 2427 | case Expr::AsTypeExprClass: |
| 2428 | case Expr::PseudoObjectExprClass: |
| 2429 | case Expr::AtomicExprClass: |
| 2430 | { |
| 2431 | // As bad as this diagnostic is, it's better than crashing. |
| 2432 | DiagnosticsEngine &Diags = Context.getDiags(); |
| 2433 | unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, |
| 2434 | "cannot yet mangle expression type %0"); |
| 2435 | Diags.Report(E->getExprLoc(), DiagID) |
| 2436 | << E->getStmtClassName() << E->getSourceRange(); |
| 2437 | break; |
| 2438 | } |
| 2439 | |
| 2440 | // Even gcc-4.5 doesn't mangle this. |
| 2441 | case Expr::BinaryConditionalOperatorClass: { |
| 2442 | DiagnosticsEngine &Diags = Context.getDiags(); |
| 2443 | unsigned DiagID = |
| 2444 | Diags.getCustomDiagID(DiagnosticsEngine::Error, |
| 2445 | "?: operator with omitted middle operand cannot be mangled"); |
| 2446 | Diags.Report(E->getExprLoc(), DiagID) |
| 2447 | << E->getStmtClassName() << E->getSourceRange(); |
| 2448 | break; |
| 2449 | } |
| 2450 | |
| 2451 | // These are used for internal purposes and cannot be meaningfully mangled. |
| 2452 | case Expr::OpaqueValueExprClass: |
| 2453 | llvm_unreachable("cannot mangle opaque value; mangling wrong thing?"); |
| 2454 | |
| 2455 | case Expr::InitListExprClass: { |
| 2456 | // Proposal by Jason Merrill, 2012-01-03 |
| 2457 | Out << "il"; |
| 2458 | const InitListExpr *InitList = cast<InitListExpr>(E); |
| 2459 | for (unsigned i = 0, e = InitList->getNumInits(); i != e; ++i) |
| 2460 | mangleExpression(InitList->getInit(i)); |
| 2461 | Out << "E"; |
| 2462 | break; |
| 2463 | } |
| 2464 | |
| 2465 | case Expr::CXXDefaultArgExprClass: |
| 2466 | mangleExpression(cast<CXXDefaultArgExpr>(E)->getExpr(), Arity); |
| 2467 | break; |
| 2468 | |
| 2469 | case Expr::SubstNonTypeTemplateParmExprClass: |
| 2470 | mangleExpression(cast<SubstNonTypeTemplateParmExpr>(E)->getReplacement(), |
| 2471 | Arity); |
| 2472 | break; |
| 2473 | |
| 2474 | case Expr::UserDefinedLiteralClass: |
| 2475 | // We follow g++'s approach of mangling a UDL as a call to the literal |
| 2476 | // operator. |
| 2477 | case Expr::CXXMemberCallExprClass: // fallthrough |
| 2478 | case Expr::CallExprClass: { |
| 2479 | const CallExpr *CE = cast<CallExpr>(E); |
| 2480 | |
| 2481 | // <expression> ::= cp <simple-id> <expression>* E |
| 2482 | // We use this mangling only when the call would use ADL except |
| 2483 | // for being parenthesized. Per discussion with David |
| 2484 | // Vandervoorde, 2011.04.25. |
| 2485 | if (isParenthesizedADLCallee(CE)) { |
| 2486 | Out << "cp"; |
| 2487 | // The callee here is a parenthesized UnresolvedLookupExpr with |
| 2488 | // no qualifier and should always get mangled as a <simple-id> |
| 2489 | // anyway. |
| 2490 | |
| 2491 | // <expression> ::= cl <expression>* E |
| 2492 | } else { |
| 2493 | Out << "cl"; |
| 2494 | } |
| 2495 | |
| 2496 | mangleExpression(CE->getCallee(), CE->getNumArgs()); |
| 2497 | for (unsigned I = 0, N = CE->getNumArgs(); I != N; ++I) |
| 2498 | mangleExpression(CE->getArg(I)); |
| 2499 | Out << 'E'; |
| 2500 | break; |
| 2501 | } |
| 2502 | |
| 2503 | case Expr::CXXNewExprClass: { |
| 2504 | const CXXNewExpr *New = cast<CXXNewExpr>(E); |
| 2505 | if (New->isGlobalNew()) Out << "gs"; |
| 2506 | Out << (New->isArray() ? "na" : "nw"); |
| 2507 | for (CXXNewExpr::const_arg_iterator I = New->placement_arg_begin(), |
| 2508 | E = New->placement_arg_end(); I != E; ++I) |
| 2509 | mangleExpression(*I); |
| 2510 | Out << '_'; |
| 2511 | mangleType(New->getAllocatedType()); |
| 2512 | if (New->hasInitializer()) { |
| 2513 | // Proposal by Jason Merrill, 2012-01-03 |
| 2514 | if (New->getInitializationStyle() == CXXNewExpr::ListInit) |
| 2515 | Out << "il"; |
| 2516 | else |
| 2517 | Out << "pi"; |
| 2518 | const Expr *Init = New->getInitializer(); |
| 2519 | if (const CXXConstructExpr *CCE = dyn_cast<CXXConstructExpr>(Init)) { |
| 2520 | // Directly inline the initializers. |
| 2521 | for (CXXConstructExpr::const_arg_iterator I = CCE->arg_begin(), |
| 2522 | E = CCE->arg_end(); |
| 2523 | I != E; ++I) |
| 2524 | mangleExpression(*I); |
| 2525 | } else if (const ParenListExpr *PLE = dyn_cast<ParenListExpr>(Init)) { |
| 2526 | for (unsigned i = 0, e = PLE->getNumExprs(); i != e; ++i) |
| 2527 | mangleExpression(PLE->getExpr(i)); |
| 2528 | } else if (New->getInitializationStyle() == CXXNewExpr::ListInit && |
| 2529 | isa<InitListExpr>(Init)) { |
| 2530 | // Only take InitListExprs apart for list-initialization. |
| 2531 | const InitListExpr *InitList = cast<InitListExpr>(Init); |
| 2532 | for (unsigned i = 0, e = InitList->getNumInits(); i != e; ++i) |
| 2533 | mangleExpression(InitList->getInit(i)); |
| 2534 | } else |
| 2535 | mangleExpression(Init); |
| 2536 | } |
| 2537 | Out << 'E'; |
| 2538 | break; |
| 2539 | } |
| 2540 | |
| 2541 | case Expr::MemberExprClass: { |
| 2542 | const MemberExpr *ME = cast<MemberExpr>(E); |
| 2543 | mangleMemberExpr(ME->getBase(), ME->isArrow(), |
| 2544 | ME->getQualifier(), 0, ME->getMemberDecl()->getDeclName(), |
| 2545 | Arity); |
| 2546 | break; |
| 2547 | } |
| 2548 | |
| 2549 | case Expr::UnresolvedMemberExprClass: { |
| 2550 | const UnresolvedMemberExpr *ME = cast<UnresolvedMemberExpr>(E); |
| 2551 | mangleMemberExpr(ME->getBase(), ME->isArrow(), |
| 2552 | ME->getQualifier(), 0, ME->getMemberName(), |
| 2553 | Arity); |
| 2554 | if (ME->hasExplicitTemplateArgs()) |
| 2555 | mangleTemplateArgs(ME->getExplicitTemplateArgs()); |
| 2556 | break; |
| 2557 | } |
| 2558 | |
| 2559 | case Expr::CXXDependentScopeMemberExprClass: { |
| 2560 | const CXXDependentScopeMemberExpr *ME |
| 2561 | = cast<CXXDependentScopeMemberExpr>(E); |
| 2562 | mangleMemberExpr(ME->getBase(), ME->isArrow(), |
| 2563 | ME->getQualifier(), ME->getFirstQualifierFoundInScope(), |
| 2564 | ME->getMember(), Arity); |
| 2565 | if (ME->hasExplicitTemplateArgs()) |
| 2566 | mangleTemplateArgs(ME->getExplicitTemplateArgs()); |
| 2567 | break; |
| 2568 | } |
| 2569 | |
| 2570 | case Expr::UnresolvedLookupExprClass: { |
| 2571 | const UnresolvedLookupExpr *ULE = cast<UnresolvedLookupExpr>(E); |
| 2572 | mangleUnresolvedName(ULE->getQualifier(), 0, ULE->getName(), Arity); |
| 2573 | |
| 2574 | // All the <unresolved-name> productions end in a |
| 2575 | // base-unresolved-name, where <template-args> are just tacked |
| 2576 | // onto the end. |
| 2577 | if (ULE->hasExplicitTemplateArgs()) |
| 2578 | mangleTemplateArgs(ULE->getExplicitTemplateArgs()); |
| 2579 | break; |
| 2580 | } |
| 2581 | |
| 2582 | case Expr::CXXUnresolvedConstructExprClass: { |
| 2583 | const CXXUnresolvedConstructExpr *CE = cast<CXXUnresolvedConstructExpr>(E); |
| 2584 | unsigned N = CE->arg_size(); |
| 2585 | |
| 2586 | Out << "cv"; |
| 2587 | mangleType(CE->getType()); |
| 2588 | if (N != 1) Out << '_'; |
| 2589 | for (unsigned I = 0; I != N; ++I) mangleExpression(CE->getArg(I)); |
| 2590 | if (N != 1) Out << 'E'; |
| 2591 | break; |
| 2592 | } |
| 2593 | |
| 2594 | case Expr::CXXTemporaryObjectExprClass: |
| 2595 | case Expr::CXXConstructExprClass: { |
| 2596 | const CXXConstructExpr *CE = cast<CXXConstructExpr>(E); |
| 2597 | unsigned N = CE->getNumArgs(); |
| 2598 | |
| 2599 | // Proposal by Jason Merrill, 2012-01-03 |
| 2600 | if (CE->isListInitialization()) |
| 2601 | Out << "tl"; |
| 2602 | else |
| 2603 | Out << "cv"; |
| 2604 | mangleType(CE->getType()); |
| 2605 | if (N != 1) Out << '_'; |
| 2606 | for (unsigned I = 0; I != N; ++I) mangleExpression(CE->getArg(I)); |
| 2607 | if (N != 1) Out << 'E'; |
| 2608 | break; |
| 2609 | } |
| 2610 | |
| 2611 | case Expr::CXXScalarValueInitExprClass: |
| 2612 | Out <<"cv"; |
| 2613 | mangleType(E->getType()); |
| 2614 | Out <<"_E"; |
| 2615 | break; |
| 2616 | |
| 2617 | case Expr::CXXNoexceptExprClass: |
| 2618 | Out << "nx"; |
| 2619 | mangleExpression(cast<CXXNoexceptExpr>(E)->getOperand()); |
| 2620 | break; |
| 2621 | |
| 2622 | case Expr::UnaryExprOrTypeTraitExprClass: { |
| 2623 | const UnaryExprOrTypeTraitExpr *SAE = cast<UnaryExprOrTypeTraitExpr>(E); |
| 2624 | |
| 2625 | if (!SAE->isInstantiationDependent()) { |
| 2626 | // Itanium C++ ABI: |
| 2627 | // If the operand of a sizeof or alignof operator is not |
| 2628 | // instantiation-dependent it is encoded as an integer literal |
| 2629 | // reflecting the result of the operator. |
| 2630 | // |
| 2631 | // If the result of the operator is implicitly converted to a known |
| 2632 | // integer type, that type is used for the literal; otherwise, the type |
| 2633 | // of std::size_t or std::ptrdiff_t is used. |
| 2634 | QualType T = (ImplicitlyConvertedToType.isNull() || |
| 2635 | !ImplicitlyConvertedToType->isIntegerType())? SAE->getType() |
| 2636 | : ImplicitlyConvertedToType; |
| 2637 | llvm::APSInt V = SAE->EvaluateKnownConstInt(Context.getASTContext()); |
| 2638 | mangleIntegerLiteral(T, V); |
| 2639 | break; |
| 2640 | } |
| 2641 | |
| 2642 | switch(SAE->getKind()) { |
| 2643 | case UETT_SizeOf: |
| 2644 | Out << 's'; |
| 2645 | break; |
| 2646 | case UETT_AlignOf: |
| 2647 | Out << 'a'; |
| 2648 | break; |
| 2649 | case UETT_VecStep: |
| 2650 | DiagnosticsEngine &Diags = Context.getDiags(); |
| 2651 | unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error, |
| 2652 | "cannot yet mangle vec_step expression"); |
| 2653 | Diags.Report(DiagID); |
| 2654 | return; |
| 2655 | } |
| 2656 | if (SAE->isArgumentType()) { |
| 2657 | Out << 't'; |
| 2658 | mangleType(SAE->getArgumentType()); |
| 2659 | } else { |
| 2660 | Out << 'z'; |
| 2661 | mangleExpression(SAE->getArgumentExpr()); |
| 2662 | } |
| 2663 | break; |
| 2664 | } |
| 2665 | |
| 2666 | case Expr::CXXThrowExprClass: { |
| 2667 | const CXXThrowExpr *TE = cast<CXXThrowExpr>(E); |
| 2668 | |
| 2669 | // Proposal from David Vandervoorde, 2010.06.30 |
| 2670 | if (TE->getSubExpr()) { |
| 2671 | Out << "tw"; |
| 2672 | mangleExpression(TE->getSubExpr()); |
| 2673 | } else { |
| 2674 | Out << "tr"; |
| 2675 | } |
| 2676 | break; |
| 2677 | } |
| 2678 | |
| 2679 | case Expr::CXXTypeidExprClass: { |
| 2680 | const CXXTypeidExpr *TIE = cast<CXXTypeidExpr>(E); |
| 2681 | |
| 2682 | // Proposal from David Vandervoorde, 2010.06.30 |
| 2683 | if (TIE->isTypeOperand()) { |
| 2684 | Out << "ti"; |
| 2685 | mangleType(TIE->getTypeOperand()); |
| 2686 | } else { |
| 2687 | Out << "te"; |
| 2688 | mangleExpression(TIE->getExprOperand()); |
| 2689 | } |
| 2690 | break; |
| 2691 | } |
| 2692 | |
| 2693 | case Expr::CXXDeleteExprClass: { |
| 2694 | const CXXDeleteExpr *DE = cast<CXXDeleteExpr>(E); |
| 2695 | |
| 2696 | // Proposal from David Vandervoorde, 2010.06.30 |
| 2697 | if (DE->isGlobalDelete()) Out << "gs"; |
| 2698 | Out << (DE->isArrayForm() ? "da" : "dl"); |
| 2699 | mangleExpression(DE->getArgument()); |
| 2700 | break; |
| 2701 | } |
| 2702 | |
| 2703 | case Expr::UnaryOperatorClass: { |
| 2704 | const UnaryOperator *UO = cast<UnaryOperator>(E); |
| 2705 | mangleOperatorName(UnaryOperator::getOverloadedOperator(UO->getOpcode()), |
| 2706 | /*Arity=*/1); |
| 2707 | mangleExpression(UO->getSubExpr()); |
| 2708 | break; |
| 2709 | } |
| 2710 | |
| 2711 | case Expr::ArraySubscriptExprClass: { |
| 2712 | const ArraySubscriptExpr *AE = cast<ArraySubscriptExpr>(E); |
| 2713 | |
| 2714 | // Array subscript is treated as a syntactically weird form of |
| 2715 | // binary operator. |
| 2716 | Out << "ix"; |
| 2717 | mangleExpression(AE->getLHS()); |
| 2718 | mangleExpression(AE->getRHS()); |
| 2719 | break; |
| 2720 | } |
| 2721 | |
| 2722 | case Expr::CompoundAssignOperatorClass: // fallthrough |
| 2723 | case Expr::BinaryOperatorClass: { |
| 2724 | const BinaryOperator *BO = cast<BinaryOperator>(E); |
| 2725 | if (BO->getOpcode() == BO_PtrMemD) |
| 2726 | Out << "ds"; |
| 2727 | else |
| 2728 | mangleOperatorName(BinaryOperator::getOverloadedOperator(BO->getOpcode()), |
| 2729 | /*Arity=*/2); |
| 2730 | mangleExpression(BO->getLHS()); |
| 2731 | mangleExpression(BO->getRHS()); |
| 2732 | break; |
| 2733 | } |
| 2734 | |
| 2735 | case Expr::ConditionalOperatorClass: { |
| 2736 | const ConditionalOperator *CO = cast<ConditionalOperator>(E); |
| 2737 | mangleOperatorName(OO_Conditional, /*Arity=*/3); |
| 2738 | mangleExpression(CO->getCond()); |
| 2739 | mangleExpression(CO->getLHS(), Arity); |
| 2740 | mangleExpression(CO->getRHS(), Arity); |
| 2741 | break; |
| 2742 | } |
| 2743 | |
| 2744 | case Expr::ImplicitCastExprClass: { |
| 2745 | ImplicitlyConvertedToType = E->getType(); |
| 2746 | E = cast<ImplicitCastExpr>(E)->getSubExpr(); |
| 2747 | goto recurse; |
| 2748 | } |
| 2749 | |
| 2750 | case Expr::ObjCBridgedCastExprClass: { |
| 2751 | // Mangle ownership casts as a vendor extended operator __bridge, |
| 2752 | // __bridge_transfer, or __bridge_retain. |
| 2753 | StringRef Kind = cast<ObjCBridgedCastExpr>(E)->getBridgeKindName(); |
| 2754 | Out << "v1U" << Kind.size() << Kind; |
| 2755 | } |
| 2756 | // Fall through to mangle the cast itself. |
| 2757 | |
| 2758 | case Expr::CStyleCastExprClass: |
| 2759 | case Expr::CXXStaticCastExprClass: |
| 2760 | case Expr::CXXDynamicCastExprClass: |
| 2761 | case Expr::CXXReinterpretCastExprClass: |
| 2762 | case Expr::CXXConstCastExprClass: |
| 2763 | case Expr::CXXFunctionalCastExprClass: { |
| 2764 | const ExplicitCastExpr *ECE = cast<ExplicitCastExpr>(E); |
| 2765 | Out << "cv"; |
| 2766 | mangleType(ECE->getType()); |
| 2767 | mangleExpression(ECE->getSubExpr()); |
| 2768 | break; |
| 2769 | } |
| 2770 | |
| 2771 | case Expr::CXXOperatorCallExprClass: { |
| 2772 | const CXXOperatorCallExpr *CE = cast<CXXOperatorCallExpr>(E); |
| 2773 | unsigned NumArgs = CE->getNumArgs(); |
| 2774 | mangleOperatorName(CE->getOperator(), /*Arity=*/NumArgs); |
| 2775 | // Mangle the arguments. |
| 2776 | for (unsigned i = 0; i != NumArgs; ++i) |
| 2777 | mangleExpression(CE->getArg(i)); |
| 2778 | break; |
| 2779 | } |
| 2780 | |
| 2781 | case Expr::ParenExprClass: |
| 2782 | mangleExpression(cast<ParenExpr>(E)->getSubExpr(), Arity); |
| 2783 | break; |
| 2784 | |
| 2785 | case Expr::DeclRefExprClass: { |
| 2786 | const NamedDecl *D = cast<DeclRefExpr>(E)->getDecl(); |
| 2787 | |
| 2788 | switch (D->getKind()) { |
| 2789 | default: |
| 2790 | // <expr-primary> ::= L <mangled-name> E # external name |
| 2791 | Out << 'L'; |
| 2792 | mangle(D, "_Z"); |
| 2793 | Out << 'E'; |
| 2794 | break; |
| 2795 | |
| 2796 | case Decl::ParmVar: |
| 2797 | mangleFunctionParam(cast<ParmVarDecl>(D)); |
| 2798 | break; |
| 2799 | |
| 2800 | case Decl::EnumConstant: { |
| 2801 | const EnumConstantDecl *ED = cast<EnumConstantDecl>(D); |
| 2802 | mangleIntegerLiteral(ED->getType(), ED->getInitVal()); |
| 2803 | break; |
| 2804 | } |
| 2805 | |
| 2806 | case Decl::NonTypeTemplateParm: { |
| 2807 | const NonTypeTemplateParmDecl *PD = cast<NonTypeTemplateParmDecl>(D); |
| 2808 | mangleTemplateParameter(PD->getIndex()); |
| 2809 | break; |
| 2810 | } |
| 2811 | |
| 2812 | } |
| 2813 | |
| 2814 | break; |
| 2815 | } |
| 2816 | |
| 2817 | case Expr::SubstNonTypeTemplateParmPackExprClass: |
| 2818 | // FIXME: not clear how to mangle this! |
| 2819 | // template <unsigned N...> class A { |
| 2820 | // template <class U...> void foo(U (&x)[N]...); |
| 2821 | // }; |
| 2822 | Out << "_SUBSTPACK_"; |
| 2823 | break; |
| 2824 | |
| 2825 | case Expr::FunctionParmPackExprClass: { |
| 2826 | // FIXME: not clear how to mangle this! |
| 2827 | const FunctionParmPackExpr *FPPE = cast<FunctionParmPackExpr>(E); |
| 2828 | Out << "v110_SUBSTPACK"; |
| 2829 | mangleFunctionParam(FPPE->getParameterPack()); |
| 2830 | break; |
| 2831 | } |
| 2832 | |
| 2833 | case Expr::DependentScopeDeclRefExprClass: { |
| 2834 | const DependentScopeDeclRefExpr *DRE = cast<DependentScopeDeclRefExpr>(E); |
| 2835 | mangleUnresolvedName(DRE->getQualifier(), 0, DRE->getDeclName(), Arity); |
| 2836 | |
| 2837 | // All the <unresolved-name> productions end in a |
| 2838 | // base-unresolved-name, where <template-args> are just tacked |
| 2839 | // onto the end. |
| 2840 | if (DRE->hasExplicitTemplateArgs()) |
| 2841 | mangleTemplateArgs(DRE->getExplicitTemplateArgs()); |
| 2842 | break; |
| 2843 | } |
| 2844 | |
| 2845 | case Expr::CXXBindTemporaryExprClass: |
| 2846 | mangleExpression(cast<CXXBindTemporaryExpr>(E)->getSubExpr()); |
| 2847 | break; |
| 2848 | |
| 2849 | case Expr::ExprWithCleanupsClass: |
| 2850 | mangleExpression(cast<ExprWithCleanups>(E)->getSubExpr(), Arity); |
| 2851 | break; |
| 2852 | |
| 2853 | case Expr::FloatingLiteralClass: { |
| 2854 | const FloatingLiteral *FL = cast<FloatingLiteral>(E); |
| 2855 | Out << 'L'; |
| 2856 | mangleType(FL->getType()); |
| 2857 | mangleFloat(FL->getValue()); |
| 2858 | Out << 'E'; |
| 2859 | break; |
| 2860 | } |
| 2861 | |
| 2862 | case Expr::CharacterLiteralClass: |
| 2863 | Out << 'L'; |
| 2864 | mangleType(E->getType()); |
| 2865 | Out << cast<CharacterLiteral>(E)->getValue(); |
| 2866 | Out << 'E'; |
| 2867 | break; |
| 2868 | |
| 2869 | // FIXME. __objc_yes/__objc_no are mangled same as true/false |
| 2870 | case Expr::ObjCBoolLiteralExprClass: |
| 2871 | Out << "Lb"; |
| 2872 | Out << (cast<ObjCBoolLiteralExpr>(E)->getValue() ? '1' : '0'); |
| 2873 | Out << 'E'; |
| 2874 | break; |
| 2875 | |
| 2876 | case Expr::CXXBoolLiteralExprClass: |
| 2877 | Out << "Lb"; |
| 2878 | Out << (cast<CXXBoolLiteralExpr>(E)->getValue() ? '1' : '0'); |
| 2879 | Out << 'E'; |
| 2880 | break; |
| 2881 | |
| 2882 | case Expr::IntegerLiteralClass: { |
| 2883 | llvm::APSInt Value(cast<IntegerLiteral>(E)->getValue()); |
| 2884 | if (E->getType()->isSignedIntegerType()) |
| 2885 | Value.setIsSigned(true); |
| 2886 | mangleIntegerLiteral(E->getType(), Value); |
| 2887 | break; |
| 2888 | } |
| 2889 | |
| 2890 | case Expr::ImaginaryLiteralClass: { |
| 2891 | const ImaginaryLiteral *IE = cast<ImaginaryLiteral>(E); |
| 2892 | // Mangle as if a complex literal. |
| 2893 | // Proposal from David Vandevoorde, 2010.06.30. |
| 2894 | Out << 'L'; |
| 2895 | mangleType(E->getType()); |
| 2896 | if (const FloatingLiteral *Imag = |
| 2897 | dyn_cast<FloatingLiteral>(IE->getSubExpr())) { |
| 2898 | // Mangle a floating-point zero of the appropriate type. |
| 2899 | mangleFloat(llvm::APFloat(Imag->getValue().getSemantics())); |
| 2900 | Out << '_'; |
| 2901 | mangleFloat(Imag->getValue()); |
| 2902 | } else { |
| 2903 | Out << "0_"; |
| 2904 | llvm::APSInt Value(cast<IntegerLiteral>(IE->getSubExpr())->getValue()); |
| 2905 | if (IE->getSubExpr()->getType()->isSignedIntegerType()) |
| 2906 | Value.setIsSigned(true); |
| 2907 | mangleNumber(Value); |
| 2908 | } |
| 2909 | Out << 'E'; |
| 2910 | break; |
| 2911 | } |
| 2912 | |
| 2913 | case Expr::StringLiteralClass: { |
| 2914 | // Revised proposal from David Vandervoorde, 2010.07.15. |
| 2915 | Out << 'L'; |
| 2916 | assert(isa<ConstantArrayType>(E->getType())); |
| 2917 | mangleType(E->getType()); |
| 2918 | Out << 'E'; |
| 2919 | break; |
| 2920 | } |
| 2921 | |
| 2922 | case Expr::GNUNullExprClass: |
| 2923 | // FIXME: should this really be mangled the same as nullptr? |
| 2924 | // fallthrough |
| 2925 | |
| 2926 | case Expr::CXXNullPtrLiteralExprClass: { |
| 2927 | // Proposal from David Vandervoorde, 2010.06.30, as |
| 2928 | // modified by ABI list discussion. |
| 2929 | Out << "LDnE"; |
| 2930 | break; |
| 2931 | } |
| 2932 | |
| 2933 | case Expr::PackExpansionExprClass: |
| 2934 | Out << "sp"; |
| 2935 | mangleExpression(cast<PackExpansionExpr>(E)->getPattern()); |
| 2936 | break; |
| 2937 | |
| 2938 | case Expr::SizeOfPackExprClass: { |
| 2939 | Out << "sZ"; |
| 2940 | const NamedDecl *Pack = cast<SizeOfPackExpr>(E)->getPack(); |
| 2941 | if (const TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(Pack)) |
| 2942 | mangleTemplateParameter(TTP->getIndex()); |
| 2943 | else if (const NonTypeTemplateParmDecl *NTTP |
| 2944 | = dyn_cast<NonTypeTemplateParmDecl>(Pack)) |
| 2945 | mangleTemplateParameter(NTTP->getIndex()); |
| 2946 | else if (const TemplateTemplateParmDecl *TempTP |
| 2947 | = dyn_cast<TemplateTemplateParmDecl>(Pack)) |
| 2948 | mangleTemplateParameter(TempTP->getIndex()); |
| 2949 | else |
| 2950 | mangleFunctionParam(cast<ParmVarDecl>(Pack)); |
| 2951 | break; |
| 2952 | } |
| 2953 | |
| 2954 | case Expr::MaterializeTemporaryExprClass: { |
| 2955 | mangleExpression(cast<MaterializeTemporaryExpr>(E)->GetTemporaryExpr()); |
| 2956 | break; |
| 2957 | } |
| 2958 | |
| 2959 | case Expr::CXXThisExprClass: |
| 2960 | Out << "fpT"; |
| 2961 | break; |
| 2962 | } |
| 2963 | } |
| 2964 | |
| 2965 | /// Mangle an expression which refers to a parameter variable. |
| 2966 | /// |
| 2967 | /// <expression> ::= <function-param> |
| 2968 | /// <function-param> ::= fp <top-level CV-qualifiers> _ # L == 0, I == 0 |
| 2969 | /// <function-param> ::= fp <top-level CV-qualifiers> |
| 2970 | /// <parameter-2 non-negative number> _ # L == 0, I > 0 |
| 2971 | /// <function-param> ::= fL <L-1 non-negative number> |
| 2972 | /// p <top-level CV-qualifiers> _ # L > 0, I == 0 |
| 2973 | /// <function-param> ::= fL <L-1 non-negative number> |
| 2974 | /// p <top-level CV-qualifiers> |
| 2975 | /// <I-1 non-negative number> _ # L > 0, I > 0 |
| 2976 | /// |
| 2977 | /// L is the nesting depth of the parameter, defined as 1 if the |
| 2978 | /// parameter comes from the innermost function prototype scope |
| 2979 | /// enclosing the current context, 2 if from the next enclosing |
| 2980 | /// function prototype scope, and so on, with one special case: if |
| 2981 | /// we've processed the full parameter clause for the innermost |
| 2982 | /// function type, then L is one less. This definition conveniently |
| 2983 | /// makes it irrelevant whether a function's result type was written |
| 2984 | /// trailing or leading, but is otherwise overly complicated; the |
| 2985 | /// numbering was first designed without considering references to |
| 2986 | /// parameter in locations other than return types, and then the |
| 2987 | /// mangling had to be generalized without changing the existing |
| 2988 | /// manglings. |
| 2989 | /// |
| 2990 | /// I is the zero-based index of the parameter within its parameter |
| 2991 | /// declaration clause. Note that the original ABI document describes |
| 2992 | /// this using 1-based ordinals. |
| 2993 | void CXXNameMangler::mangleFunctionParam(const ParmVarDecl *parm) { |
| 2994 | unsigned parmDepth = parm->getFunctionScopeDepth(); |
| 2995 | unsigned parmIndex = parm->getFunctionScopeIndex(); |
| 2996 | |
| 2997 | // Compute 'L'. |
| 2998 | // parmDepth does not include the declaring function prototype. |
| 2999 | // FunctionTypeDepth does account for that. |
| 3000 | assert(parmDepth < FunctionTypeDepth.getDepth()); |
| 3001 | unsigned nestingDepth = FunctionTypeDepth.getDepth() - parmDepth; |
| 3002 | if (FunctionTypeDepth.isInResultType()) |
| 3003 | nestingDepth--; |
| 3004 | |
| 3005 | if (nestingDepth == 0) { |
| 3006 | Out << "fp"; |
| 3007 | } else { |
| 3008 | Out << "fL" << (nestingDepth - 1) << 'p'; |
| 3009 | } |
| 3010 | |
| 3011 | // Top-level qualifiers. We don't have to worry about arrays here, |
| 3012 | // because parameters declared as arrays should already have been |
| 3013 | // transformed to have pointer type. FIXME: apparently these don't |
| 3014 | // get mangled if used as an rvalue of a known non-class type? |
| 3015 | assert(!parm->getType()->isArrayType() |
| 3016 | && "parameter's type is still an array type?"); |
| 3017 | mangleQualifiers(parm->getType().getQualifiers()); |
| 3018 | |
| 3019 | // Parameter index. |
| 3020 | if (parmIndex != 0) { |
| 3021 | Out << (parmIndex - 1); |
| 3022 | } |
| 3023 | Out << '_'; |
| 3024 | } |
| 3025 | |
| 3026 | void CXXNameMangler::mangleCXXCtorType(CXXCtorType T) { |
| 3027 | // <ctor-dtor-name> ::= C1 # complete object constructor |
| 3028 | // ::= C2 # base object constructor |
| 3029 | // ::= C3 # complete object allocating constructor |
| 3030 | // |
| 3031 | switch (T) { |
| 3032 | case Ctor_Complete: |
| 3033 | Out << "C1"; |
| 3034 | break; |
| 3035 | case Ctor_Base: |
| 3036 | Out << "C2"; |
| 3037 | break; |
| 3038 | case Ctor_CompleteAllocating: |
| 3039 | Out << "C3"; |
| 3040 | break; |
| 3041 | } |
| 3042 | } |
| 3043 | |
| 3044 | void CXXNameMangler::mangleCXXDtorType(CXXDtorType T) { |
| 3045 | // <ctor-dtor-name> ::= D0 # deleting destructor |
| 3046 | // ::= D1 # complete object destructor |
| 3047 | // ::= D2 # base object destructor |
| 3048 | // |
| 3049 | switch (T) { |
| 3050 | case Dtor_Deleting: |
| 3051 | Out << "D0"; |
| 3052 | break; |
| 3053 | case Dtor_Complete: |
| 3054 | Out << "D1"; |
| 3055 | break; |
| 3056 | case Dtor_Base: |
| 3057 | Out << "D2"; |
| 3058 | break; |
| 3059 | } |
| 3060 | } |
| 3061 | |
| 3062 | void CXXNameMangler::mangleTemplateArgs( |
| 3063 | const ASTTemplateArgumentListInfo &TemplateArgs) { |
| 3064 | // <template-args> ::= I <template-arg>+ E |
| 3065 | Out << 'I'; |
| 3066 | for (unsigned i = 0, e = TemplateArgs.NumTemplateArgs; i != e; ++i) |
| 3067 | mangleTemplateArg(TemplateArgs.getTemplateArgs()[i].getArgument()); |
| 3068 | Out << 'E'; |
| 3069 | } |
| 3070 | |
| 3071 | void CXXNameMangler::mangleTemplateArgs(const TemplateArgumentList &AL) { |
| 3072 | // <template-args> ::= I <template-arg>+ E |
| 3073 | Out << 'I'; |
| 3074 | for (unsigned i = 0, e = AL.size(); i != e; ++i) |
| 3075 | mangleTemplateArg(AL[i]); |
| 3076 | Out << 'E'; |
| 3077 | } |
| 3078 | |
| 3079 | void CXXNameMangler::mangleTemplateArgs(const TemplateArgument *TemplateArgs, |
| 3080 | unsigned NumTemplateArgs) { |
| 3081 | // <template-args> ::= I <template-arg>+ E |
| 3082 | Out << 'I'; |
| 3083 | for (unsigned i = 0; i != NumTemplateArgs; ++i) |
| 3084 | mangleTemplateArg(TemplateArgs[i]); |
| 3085 | Out << 'E'; |
| 3086 | } |
| 3087 | |
| 3088 | void CXXNameMangler::mangleTemplateArg(TemplateArgument A) { |
| 3089 | // <template-arg> ::= <type> # type or template |
| 3090 | // ::= X <expression> E # expression |
| 3091 | // ::= <expr-primary> # simple expressions |
| 3092 | // ::= J <template-arg>* E # argument pack |
| 3093 | // ::= sp <expression> # pack expansion of (C++0x) |
| 3094 | if (!A.isInstantiationDependent() || A.isDependent()) |
| 3095 | A = Context.getASTContext().getCanonicalTemplateArgument(A); |
| 3096 | |
| 3097 | switch (A.getKind()) { |
| 3098 | case TemplateArgument::Null: |
| 3099 | llvm_unreachable("Cannot mangle NULL template argument"); |
| 3100 | |
| 3101 | case TemplateArgument::Type: |
| 3102 | mangleType(A.getAsType()); |
| 3103 | break; |
| 3104 | case TemplateArgument::Template: |
| 3105 | // This is mangled as <type>. |
| 3106 | mangleType(A.getAsTemplate()); |
| 3107 | break; |
| 3108 | case TemplateArgument::TemplateExpansion: |
| 3109 | // <type> ::= Dp <type> # pack expansion (C++0x) |
| 3110 | Out << "Dp"; |
| 3111 | mangleType(A.getAsTemplateOrTemplatePattern()); |
| 3112 | break; |
| 3113 | case TemplateArgument::Expression: { |
| 3114 | // It's possible to end up with a DeclRefExpr here in certain |
| 3115 | // dependent cases, in which case we should mangle as a |
| 3116 | // declaration. |
| 3117 | const Expr *E = A.getAsExpr()->IgnoreParens(); |
| 3118 | if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { |
| 3119 | const ValueDecl *D = DRE->getDecl(); |
| 3120 | if (isa<VarDecl>(D) || isa<FunctionDecl>(D)) { |
| 3121 | Out << "L"; |
| 3122 | mangle(D, "_Z"); |
| 3123 | Out << 'E'; |
| 3124 | break; |
| 3125 | } |
| 3126 | } |
| 3127 | |
| 3128 | Out << 'X'; |
| 3129 | mangleExpression(E); |
| 3130 | Out << 'E'; |
| 3131 | break; |
| 3132 | } |
| 3133 | case TemplateArgument::Integral: |
| 3134 | mangleIntegerLiteral(A.getIntegralType(), A.getAsIntegral()); |
| 3135 | break; |
| 3136 | case TemplateArgument::Declaration: { |
| 3137 | // <expr-primary> ::= L <mangled-name> E # external name |
| 3138 | // Clang produces AST's where pointer-to-member-function expressions |
| 3139 | // and pointer-to-function expressions are represented as a declaration not |
| 3140 | // an expression. We compensate for it here to produce the correct mangling. |
| 3141 | ValueDecl *D = A.getAsDecl(); |
| 3142 | bool compensateMangling = !A.isDeclForReferenceParam(); |
| 3143 | if (compensateMangling) { |
| 3144 | Out << 'X'; |
| 3145 | mangleOperatorName(OO_Amp, 1); |
| 3146 | } |
| 3147 | |
| 3148 | Out << 'L'; |
| 3149 | // References to external entities use the mangled name; if the name would |
| 3150 | // not normally be manged then mangle it as unqualified. |
| 3151 | // |
| 3152 | // FIXME: The ABI specifies that external names here should have _Z, but |
| 3153 | // gcc leaves this off. |
| 3154 | if (compensateMangling) |
| 3155 | mangle(D, "_Z"); |
| 3156 | else |
| 3157 | mangle(D, "Z"); |
| 3158 | Out << 'E'; |
| 3159 | |
| 3160 | if (compensateMangling) |
| 3161 | Out << 'E'; |
| 3162 | |
| 3163 | break; |
| 3164 | } |
| 3165 | case TemplateArgument::NullPtr: { |
| 3166 | // <expr-primary> ::= L <type> 0 E |
| 3167 | Out << 'L'; |
| 3168 | mangleType(A.getNullPtrType()); |
| 3169 | Out << "0E"; |
| 3170 | break; |
| 3171 | } |
| 3172 | case TemplateArgument::Pack: { |
| 3173 | // Note: proposal by Mike Herrick on 12/20/10 |
| 3174 | Out << 'J'; |
| 3175 | for (TemplateArgument::pack_iterator PA = A.pack_begin(), |
| 3176 | PAEnd = A.pack_end(); |
| 3177 | PA != PAEnd; ++PA) |
| 3178 | mangleTemplateArg(*PA); |
| 3179 | Out << 'E'; |
| 3180 | } |
| 3181 | } |
| 3182 | } |
| 3183 | |
| 3184 | void CXXNameMangler::mangleTemplateParameter(unsigned Index) { |
| 3185 | // <template-param> ::= T_ # first template parameter |
| 3186 | // ::= T <parameter-2 non-negative number> _ |
| 3187 | if (Index == 0) |
| 3188 | Out << "T_"; |
| 3189 | else |
| 3190 | Out << 'T' << (Index - 1) << '_'; |
| 3191 | } |
| 3192 | |
| 3193 | void CXXNameMangler::mangleExistingSubstitution(QualType type) { |
| 3194 | bool result = mangleSubstitution(type); |
| 3195 | assert(result && "no existing substitution for type"); |
| 3196 | (void) result; |
| 3197 | } |
| 3198 | |
| 3199 | void CXXNameMangler::mangleExistingSubstitution(TemplateName tname) { |
| 3200 | bool result = mangleSubstitution(tname); |
| 3201 | assert(result && "no existing substitution for template name"); |
| 3202 | (void) result; |
| 3203 | } |
| 3204 | |
| 3205 | // <substitution> ::= S <seq-id> _ |
| 3206 | // ::= S_ |
| 3207 | bool CXXNameMangler::mangleSubstitution(const NamedDecl *ND) { |
| 3208 | // Try one of the standard substitutions first. |
| 3209 | if (mangleStandardSubstitution(ND)) |
| 3210 | return true; |
| 3211 | |
| 3212 | ND = cast<NamedDecl>(ND->getCanonicalDecl()); |
| 3213 | return mangleSubstitution(reinterpret_cast<uintptr_t>(ND)); |
| 3214 | } |
| 3215 | |
| 3216 | /// \brief Determine whether the given type has any qualifiers that are |
| 3217 | /// relevant for substitutions. |
| 3218 | static bool hasMangledSubstitutionQualifiers(QualType T) { |
| 3219 | Qualifiers Qs = T.getQualifiers(); |
| 3220 | return Qs.getCVRQualifiers() || Qs.hasAddressSpace(); |
| 3221 | } |
| 3222 | |
| 3223 | bool CXXNameMangler::mangleSubstitution(QualType T) { |
| 3224 | if (!hasMangledSubstitutionQualifiers(T)) { |
| 3225 | if (const RecordType *RT = T->getAs<RecordType>()) |
| 3226 | return mangleSubstitution(RT->getDecl()); |
| 3227 | } |
| 3228 | |
| 3229 | uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr()); |
| 3230 | |
| 3231 | return mangleSubstitution(TypePtr); |
| 3232 | } |
| 3233 | |
| 3234 | bool CXXNameMangler::mangleSubstitution(TemplateName Template) { |
| 3235 | if (TemplateDecl *TD = Template.getAsTemplateDecl()) |
| 3236 | return mangleSubstitution(TD); |
| 3237 | |
| 3238 | Template = Context.getASTContext().getCanonicalTemplateName(Template); |
| 3239 | return mangleSubstitution( |
| 3240 | reinterpret_cast<uintptr_t>(Template.getAsVoidPointer())); |
| 3241 | } |
| 3242 | |
| 3243 | bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) { |
| 3244 | llvm::DenseMap<uintptr_t, unsigned>::iterator I = Substitutions.find(Ptr); |
| 3245 | if (I == Substitutions.end()) |
| 3246 | return false; |
| 3247 | |
| 3248 | unsigned SeqID = I->second; |
| 3249 | if (SeqID == 0) |
| 3250 | Out << "S_"; |
| 3251 | else { |
| 3252 | SeqID--; |
| 3253 | |
| 3254 | // <seq-id> is encoded in base-36, using digits and upper case letters. |
| 3255 | char Buffer[10]; |
| 3256 | char *BufferPtr = llvm::array_endof(Buffer); |
| 3257 | |
| 3258 | if (SeqID == 0) *--BufferPtr = '0'; |
| 3259 | |
| 3260 | while (SeqID) { |
| 3261 | assert(BufferPtr > Buffer && "Buffer overflow!"); |
| 3262 | |
| 3263 | char c = static_cast<char>(SeqID % 36); |
| 3264 | |
| 3265 | *--BufferPtr = (c < 10 ? '0' + c : 'A' + c - 10); |
| 3266 | SeqID /= 36; |
| 3267 | } |
| 3268 | |
| 3269 | Out << 'S' |
| 3270 | << StringRef(BufferPtr, llvm::array_endof(Buffer)-BufferPtr) |
| 3271 | << '_'; |
| 3272 | } |
| 3273 | |
| 3274 | return true; |
| 3275 | } |
| 3276 | |
| 3277 | static bool isCharType(QualType T) { |
| 3278 | if (T.isNull()) |
| 3279 | return false; |
| 3280 | |
| 3281 | return T->isSpecificBuiltinType(BuiltinType::Char_S) || |
| 3282 | T->isSpecificBuiltinType(BuiltinType::Char_U); |
| 3283 | } |
| 3284 | |
| 3285 | /// isCharSpecialization - Returns whether a given type is a template |
| 3286 | /// specialization of a given name with a single argument of type char. |
| 3287 | static bool isCharSpecialization(QualType T, const char *Name) { |
| 3288 | if (T.isNull()) |
| 3289 | return false; |
| 3290 | |
| 3291 | const RecordType *RT = T->getAs<RecordType>(); |
| 3292 | if (!RT) |
| 3293 | return false; |
| 3294 | |
| 3295 | const ClassTemplateSpecializationDecl *SD = |
| 3296 | dyn_cast<ClassTemplateSpecializationDecl>(RT->getDecl()); |
| 3297 | if (!SD) |
| 3298 | return false; |
| 3299 | |
| 3300 | if (!isStdNamespace(getEffectiveDeclContext(SD))) |
| 3301 | return false; |
| 3302 | |
| 3303 | const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); |
| 3304 | if (TemplateArgs.size() != 1) |
| 3305 | return false; |
| 3306 | |
| 3307 | if (!isCharType(TemplateArgs[0].getAsType())) |
| 3308 | return false; |
| 3309 | |
| 3310 | return SD->getIdentifier()->getName() == Name; |
| 3311 | } |
| 3312 | |
| 3313 | template <std::size_t StrLen> |
| 3314 | static bool isStreamCharSpecialization(const ClassTemplateSpecializationDecl*SD, |
| 3315 | const char (&Str)[StrLen]) { |
| 3316 | if (!SD->getIdentifier()->isStr(Str)) |
| 3317 | return false; |
| 3318 | |
| 3319 | const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); |
| 3320 | if (TemplateArgs.size() != 2) |
| 3321 | return false; |
| 3322 | |
| 3323 | if (!isCharType(TemplateArgs[0].getAsType())) |
| 3324 | return false; |
| 3325 | |
| 3326 | if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits")) |
| 3327 | return false; |
| 3328 | |
| 3329 | return true; |
| 3330 | } |
| 3331 | |
| 3332 | bool CXXNameMangler::mangleStandardSubstitution(const NamedDecl *ND) { |
| 3333 | // <substitution> ::= St # ::std:: |
| 3334 | if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) { |
| 3335 | if (isStd(NS)) { |
| 3336 | Out << "St"; |
| 3337 | return true; |
| 3338 | } |
| 3339 | } |
| 3340 | |
| 3341 | if (const ClassTemplateDecl *TD = dyn_cast<ClassTemplateDecl>(ND)) { |
| 3342 | if (!isStdNamespace(getEffectiveDeclContext(TD))) |
| 3343 | return false; |
| 3344 | |
| 3345 | // <substitution> ::= Sa # ::std::allocator |
| 3346 | if (TD->getIdentifier()->isStr("allocator")) { |
| 3347 | Out << "Sa"; |
| 3348 | return true; |
| 3349 | } |
| 3350 | |
| 3351 | // <<substitution> ::= Sb # ::std::basic_string |
| 3352 | if (TD->getIdentifier()->isStr("basic_string")) { |
| 3353 | Out << "Sb"; |
| 3354 | return true; |
| 3355 | } |
| 3356 | } |
| 3357 | |
| 3358 | if (const ClassTemplateSpecializationDecl *SD = |
| 3359 | dyn_cast<ClassTemplateSpecializationDecl>(ND)) { |
| 3360 | if (!isStdNamespace(getEffectiveDeclContext(SD))) |
| 3361 | return false; |
| 3362 | |
| 3363 | // <substitution> ::= Ss # ::std::basic_string<char, |
| 3364 | // ::std::char_traits<char>, |
| 3365 | // ::std::allocator<char> > |
| 3366 | if (SD->getIdentifier()->isStr("basic_string")) { |
| 3367 | const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); |
| 3368 | |
| 3369 | if (TemplateArgs.size() != 3) |
| 3370 | return false; |
| 3371 | |
| 3372 | if (!isCharType(TemplateArgs[0].getAsType())) |
| 3373 | return false; |
| 3374 | |
| 3375 | if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits")) |
| 3376 | return false; |
| 3377 | |
| 3378 | if (!isCharSpecialization(TemplateArgs[2].getAsType(), "allocator")) |
| 3379 | return false; |
| 3380 | |
| 3381 | Out << "Ss"; |
| 3382 | return true; |
| 3383 | } |
| 3384 | |
| 3385 | // <substitution> ::= Si # ::std::basic_istream<char, |
| 3386 | // ::std::char_traits<char> > |
| 3387 | if (isStreamCharSpecialization(SD, "basic_istream")) { |
| 3388 | Out << "Si"; |
| 3389 | return true; |
| 3390 | } |
| 3391 | |
| 3392 | // <substitution> ::= So # ::std::basic_ostream<char, |
| 3393 | // ::std::char_traits<char> > |
| 3394 | if (isStreamCharSpecialization(SD, "basic_ostream")) { |
| 3395 | Out << "So"; |
| 3396 | return true; |
| 3397 | } |
| 3398 | |
| 3399 | // <substitution> ::= Sd # ::std::basic_iostream<char, |
| 3400 | // ::std::char_traits<char> > |
| 3401 | if (isStreamCharSpecialization(SD, "basic_iostream")) { |
| 3402 | Out << "Sd"; |
| 3403 | return true; |
| 3404 | } |
| 3405 | } |
| 3406 | return false; |
| 3407 | } |
| 3408 | |
| 3409 | void CXXNameMangler::addSubstitution(QualType T) { |
| 3410 | if (!hasMangledSubstitutionQualifiers(T)) { |
| 3411 | if (const RecordType *RT = T->getAs<RecordType>()) { |
| 3412 | addSubstitution(RT->getDecl()); |
| 3413 | return; |
| 3414 | } |
| 3415 | } |
| 3416 | |
| 3417 | uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr()); |
| 3418 | addSubstitution(TypePtr); |
| 3419 | } |
| 3420 | |
| 3421 | void CXXNameMangler::addSubstitution(TemplateName Template) { |
| 3422 | if (TemplateDecl *TD = Template.getAsTemplateDecl()) |
| 3423 | return addSubstitution(TD); |
| 3424 | |
| 3425 | Template = Context.getASTContext().getCanonicalTemplateName(Template); |
| 3426 | addSubstitution(reinterpret_cast<uintptr_t>(Template.getAsVoidPointer())); |
| 3427 | } |
| 3428 | |
| 3429 | void CXXNameMangler::addSubstitution(uintptr_t Ptr) { |
| 3430 | assert(!Substitutions.count(Ptr) && "Substitution already exists!"); |
| 3431 | Substitutions[Ptr] = SeqID++; |
| 3432 | } |
| 3433 | |
| 3434 | // |
| 3435 | |
| 3436 | /// \brief Mangles the name of the declaration D and emits that name to the |
| 3437 | /// given output stream. |
| 3438 | /// |
| 3439 | /// If the declaration D requires a mangled name, this routine will emit that |
| 3440 | /// mangled name to \p os and return true. Otherwise, \p os will be unchanged |
| 3441 | /// and this routine will return false. In this case, the caller should just |
| 3442 | /// emit the identifier of the declaration (\c D->getIdentifier()) as its |
| 3443 | /// name. |
| 3444 | void ItaniumMangleContext::mangleName(const NamedDecl *D, |
| 3445 | raw_ostream &Out) { |
| 3446 | assert((isa<FunctionDecl>(D) || isa<VarDecl>(D)) && |
| 3447 | "Invalid mangleName() call, argument is not a variable or function!"); |
| 3448 | assert(!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) && |
| 3449 | "Invalid mangleName() call on 'structor decl!"); |
| 3450 | |
| 3451 | PrettyStackTraceDecl CrashInfo(D, SourceLocation(), |
| 3452 | getASTContext().getSourceManager(), |
| 3453 | "Mangling declaration"); |
| 3454 | |
| 3455 | CXXNameMangler Mangler(*this, Out, D); |
| 3456 | return Mangler.mangle(D); |
| 3457 | } |
| 3458 | |
| 3459 | void ItaniumMangleContext::mangleCXXCtor(const CXXConstructorDecl *D, |
| 3460 | CXXCtorType Type, |
| 3461 | raw_ostream &Out) { |
| 3462 | CXXNameMangler Mangler(*this, Out, D, Type); |
| 3463 | Mangler.mangle(D); |
| 3464 | } |
| 3465 | |
| 3466 | void ItaniumMangleContext::mangleCXXDtor(const CXXDestructorDecl *D, |
| 3467 | CXXDtorType Type, |
| 3468 | raw_ostream &Out) { |
| 3469 | CXXNameMangler Mangler(*this, Out, D, Type); |
| 3470 | Mangler.mangle(D); |
| 3471 | } |
| 3472 | |
| 3473 | void ItaniumMangleContext::mangleThunk(const CXXMethodDecl *MD, |
| 3474 | const ThunkInfo &Thunk, |
| 3475 | raw_ostream &Out) { |
| 3476 | // <special-name> ::= T <call-offset> <base encoding> |
| 3477 | // # base is the nominal target function of thunk |
| 3478 | // <special-name> ::= Tc <call-offset> <call-offset> <base encoding> |
| 3479 | // # base is the nominal target function of thunk |
| 3480 | // # first call-offset is 'this' adjustment |
| 3481 | // # second call-offset is result adjustment |
| 3482 | |
| 3483 | assert(!isa<CXXDestructorDecl>(MD) && |
| 3484 | "Use mangleCXXDtor for destructor decls!"); |
| 3485 | CXXNameMangler Mangler(*this, Out); |
| 3486 | Mangler.getStream() << "_ZT"; |
| 3487 | if (!Thunk.Return.isEmpty()) |
| 3488 | Mangler.getStream() << 'c'; |
| 3489 | |
| 3490 | // Mangle the 'this' pointer adjustment. |
| 3491 | Mangler.mangleCallOffset(Thunk.This.NonVirtual, Thunk.This.VCallOffsetOffset); |
| 3492 | |
| 3493 | // Mangle the return pointer adjustment if there is one. |
| 3494 | if (!Thunk.Return.isEmpty()) |
| 3495 | Mangler.mangleCallOffset(Thunk.Return.NonVirtual, |
| 3496 | Thunk.Return.VBaseOffsetOffset); |
| 3497 | |
| 3498 | Mangler.mangleFunctionEncoding(MD); |
| 3499 | } |
| 3500 | |
| 3501 | void |
| 3502 | ItaniumMangleContext::mangleCXXDtorThunk(const CXXDestructorDecl *DD, |
| 3503 | CXXDtorType Type, |
| 3504 | const ThisAdjustment &ThisAdjustment, |
| 3505 | raw_ostream &Out) { |
| 3506 | // <special-name> ::= T <call-offset> <base encoding> |
| 3507 | // # base is the nominal target function of thunk |
| 3508 | CXXNameMangler Mangler(*this, Out, DD, Type); |
| 3509 | Mangler.getStream() << "_ZT"; |
| 3510 | |
| 3511 | // Mangle the 'this' pointer adjustment. |
| 3512 | Mangler.mangleCallOffset(ThisAdjustment.NonVirtual, |
| 3513 | ThisAdjustment.VCallOffsetOffset); |
| 3514 | |
| 3515 | Mangler.mangleFunctionEncoding(DD); |
| 3516 | } |
| 3517 | |
| 3518 | /// mangleGuardVariable - Returns the mangled name for a guard variable |
| 3519 | /// for the passed in VarDecl. |
| 3520 | void ItaniumMangleContext::mangleItaniumGuardVariable(const VarDecl *D, |
| 3521 | raw_ostream &Out) { |
| 3522 | // <special-name> ::= GV <object name> # Guard variable for one-time |
| 3523 | // # initialization |
| 3524 | CXXNameMangler Mangler(*this, Out); |
| 3525 | Mangler.getStream() << "_ZGV"; |
| 3526 | Mangler.mangleName(D); |
| 3527 | } |
| 3528 | |
| 3529 | void ItaniumMangleContext::mangleReferenceTemporary(const VarDecl *D, |
| 3530 | raw_ostream &Out) { |
| 3531 | // We match the GCC mangling here. |
| 3532 | // <special-name> ::= GR <object name> |
| 3533 | CXXNameMangler Mangler(*this, Out); |
| 3534 | Mangler.getStream() << "_ZGR"; |
| 3535 | Mangler.mangleName(D); |
| 3536 | } |
| 3537 | |
| 3538 | void ItaniumMangleContext::mangleCXXVTable(const CXXRecordDecl *RD, |
| 3539 | raw_ostream &Out) { |
| 3540 | // <special-name> ::= TV <type> # virtual table |
| 3541 | CXXNameMangler Mangler(*this, Out); |
| 3542 | Mangler.getStream() << "_ZTV"; |
| 3543 | Mangler.mangleNameOrStandardSubstitution(RD); |
| 3544 | } |
| 3545 | |
| 3546 | void ItaniumMangleContext::mangleCXXVTT(const CXXRecordDecl *RD, |
| 3547 | raw_ostream &Out) { |
| 3548 | // <special-name> ::= TT <type> # VTT structure |
| 3549 | CXXNameMangler Mangler(*this, Out); |
| 3550 | Mangler.getStream() << "_ZTT"; |
| 3551 | Mangler.mangleNameOrStandardSubstitution(RD); |
| 3552 | } |
| 3553 | |
| 3554 | void ItaniumMangleContext::mangleCXXCtorVTable(const CXXRecordDecl *RD, |
| 3555 | int64_t Offset, |
| 3556 | const CXXRecordDecl *Type, |
| 3557 | raw_ostream &Out) { |
| 3558 | // <special-name> ::= TC <type> <offset number> _ <base type> |
| 3559 | CXXNameMangler Mangler(*this, Out); |
| 3560 | Mangler.getStream() << "_ZTC"; |
| 3561 | Mangler.mangleNameOrStandardSubstitution(RD); |
| 3562 | Mangler.getStream() << Offset; |
| 3563 | Mangler.getStream() << '_'; |
| 3564 | Mangler.mangleNameOrStandardSubstitution(Type); |
| 3565 | } |
| 3566 | |
| 3567 | void ItaniumMangleContext::mangleCXXRTTI(QualType Ty, |
| 3568 | raw_ostream &Out) { |
| 3569 | // <special-name> ::= TI <type> # typeinfo structure |
| 3570 | assert(!Ty.hasQualifiers() && "RTTI info cannot have top-level qualifiers"); |
| 3571 | CXXNameMangler Mangler(*this, Out); |
| 3572 | Mangler.getStream() << "_ZTI"; |
| 3573 | Mangler.mangleType(Ty); |
| 3574 | } |
| 3575 | |
| 3576 | void ItaniumMangleContext::mangleCXXRTTIName(QualType Ty, |
| 3577 | raw_ostream &Out) { |
| 3578 | // <special-name> ::= TS <type> # typeinfo name (null terminated byte string) |
| 3579 | CXXNameMangler Mangler(*this, Out); |
| 3580 | Mangler.getStream() << "_ZTS"; |
| 3581 | Mangler.mangleType(Ty); |
| 3582 | } |
| 3583 | |
| 3584 | MangleContext *clang::createItaniumMangleContext(ASTContext &Context, |
| 3585 | DiagnosticsEngine &Diags) { |
| 3586 | return new ItaniumMangleContext(Context, Diags); |
| 3587 | } |