| //===--- Mangle.cpp - Mangle C++ Names --------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implements C++ name mangling according to the Itanium C++ ABI, |
| // which is used in GCC 3.2 and newer (and many compilers that are |
| // ABI-compatible with GCC): |
| // |
| // http://www.codesourcery.com/public/cxx-abi/abi.html |
| // |
| //===----------------------------------------------------------------------===// |
| #include "Mangle.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/DeclCXX.h" |
| #include "clang/AST/DeclObjC.h" |
| #include "clang/AST/DeclTemplate.h" |
| #include "clang/AST/ExprCXX.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "CGVtable.h" |
| using namespace clang; |
| using namespace CodeGen; |
| |
| namespace { |
| |
| static const CXXMethodDecl *getStructor(const CXXMethodDecl *MD) { |
| assert((isa<CXXConstructorDecl>(MD) || isa<CXXDestructorDecl>(MD)) && |
| "Passed in decl is not a ctor or dtor!"); |
| |
| if (const TemplateDecl *TD = MD->getPrimaryTemplate()) { |
| MD = cast<CXXMethodDecl>(TD->getTemplatedDecl()); |
| |
| assert((isa<CXXConstructorDecl>(MD) || isa<CXXDestructorDecl>(MD)) && |
| "Templated decl is not a ctor or dtor!"); |
| } |
| |
| return MD; |
| } |
| |
| /// CXXNameMangler - Manage the mangling of a single name. |
| class CXXNameMangler { |
| MangleContext &Context; |
| llvm::raw_svector_ostream Out; |
| |
| const CXXMethodDecl *Structor; |
| unsigned StructorType; |
| |
| llvm::DenseMap<uintptr_t, unsigned> Substitutions; |
| |
| public: |
| CXXNameMangler(MangleContext &C, llvm::SmallVectorImpl<char> &Res) |
| : Context(C), Out(Res), Structor(0), StructorType(0) { } |
| CXXNameMangler(MangleContext &C, llvm::SmallVectorImpl<char> &Res, |
| const CXXConstructorDecl *D, CXXCtorType Type) |
| : Context(C), Out(Res), Structor(getStructor(D)), StructorType(Type) { } |
| CXXNameMangler(MangleContext &C, llvm::SmallVectorImpl<char> &Res, |
| const CXXDestructorDecl *D, CXXDtorType Type) |
| : Context(C), Out(Res), Structor(getStructor(D)), StructorType(Type) { } |
| |
| llvm::raw_svector_ostream &getStream() { return Out; } |
| |
| void mangle(const NamedDecl *D, llvm::StringRef Prefix = "_Z"); |
| void mangleCallOffset(const ThunkAdjustment &Adjustment); |
| void mangleNumber(int64_t Number); |
| void mangleFunctionEncoding(const FunctionDecl *FD); |
| void mangleName(const NamedDecl *ND); |
| void mangleType(QualType T); |
| |
| private: |
| bool mangleSubstitution(const NamedDecl *ND); |
| bool mangleSubstitution(QualType T); |
| bool mangleSubstitution(uintptr_t Ptr); |
| |
| bool mangleStandardSubstitution(const NamedDecl *ND); |
| |
| void addSubstitution(const NamedDecl *ND) { |
| ND = cast<NamedDecl>(ND->getCanonicalDecl()); |
| |
| addSubstitution(reinterpret_cast<uintptr_t>(ND)); |
| } |
| void addSubstitution(QualType T); |
| void addSubstitution(uintptr_t Ptr); |
| |
| void mangleName(const TemplateDecl *TD, |
| const TemplateArgument *TemplateArgs, |
| unsigned NumTemplateArgs); |
| void mangleUnqualifiedName(const NamedDecl *ND); |
| void mangleUnscopedName(const NamedDecl *ND); |
| void mangleUnscopedTemplateName(const TemplateDecl *ND); |
| void mangleSourceName(const IdentifierInfo *II); |
| void mangleLocalName(const NamedDecl *ND); |
| void mangleNestedName(const NamedDecl *ND, const DeclContext *DC); |
| void mangleNestedName(const TemplateDecl *TD, |
| const TemplateArgument *TemplateArgs, |
| unsigned NumTemplateArgs); |
| void manglePrefix(const DeclContext *DC); |
| void mangleTemplatePrefix(const TemplateDecl *ND); |
| void mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity); |
| void mangleQualifiers(Qualifiers Quals); |
| |
| void mangleObjCMethodName(const ObjCMethodDecl *MD); |
| |
| // Declare manglers for every type class. |
| #define ABSTRACT_TYPE(CLASS, PARENT) |
| #define NON_CANONICAL_TYPE(CLASS, PARENT) |
| #define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T); |
| #include "clang/AST/TypeNodes.def" |
| |
| void mangleType(const TagType*); |
| void mangleBareFunctionType(const FunctionType *T, |
| bool MangleReturnType); |
| |
| void mangleIntegerLiteral(QualType T, const llvm::APSInt &Value); |
| void mangleExpression(const Expr *E); |
| void mangleCXXCtorType(CXXCtorType T); |
| void mangleCXXDtorType(CXXDtorType T); |
| |
| void mangleTemplateArgs(const TemplateArgument *TemplateArgs, |
| unsigned NumTemplateArgs); |
| void mangleTemplateArgs(const TemplateArgumentList &L); |
| void mangleTemplateArg(const TemplateArgument &A); |
| |
| void mangleTemplateParameter(unsigned Index); |
| }; |
| } |
| |
| static bool isInCLinkageSpecification(const Decl *D) { |
| D = D->getCanonicalDecl(); |
| for (const DeclContext *DC = D->getDeclContext(); |
| !DC->isTranslationUnit(); DC = DC->getParent()) { |
| if (const LinkageSpecDecl *Linkage = dyn_cast<LinkageSpecDecl>(DC)) |
| return Linkage->getLanguage() == LinkageSpecDecl::lang_c; |
| } |
| |
| return false; |
| } |
| |
| bool MangleContext::shouldMangleDeclName(const NamedDecl *D) { |
| // In C, functions with no attributes never need to be mangled. Fastpath them. |
| if (!getASTContext().getLangOptions().CPlusPlus && !D->hasAttrs()) |
| return false; |
| |
| // Any decl can be declared with __asm("foo") on it, and this takes precedence |
| // over all other naming in the .o file. |
| if (D->hasAttr<AsmLabelAttr>()) |
| return true; |
| |
| // Clang's "overloadable" attribute extension to C/C++ implies name mangling |
| // (always) as does passing a C++ member function and a function |
| // whose name is not a simple identifier. |
| const FunctionDecl *FD = dyn_cast<FunctionDecl>(D); |
| if (FD && (FD->hasAttr<OverloadableAttr>() || isa<CXXMethodDecl>(FD) || |
| !FD->getDeclName().isIdentifier())) |
| return true; |
| |
| // Otherwise, no mangling is done outside C++ mode. |
| if (!getASTContext().getLangOptions().CPlusPlus) |
| return false; |
| |
| // No mangling in an "implicit extern C" header. |
| if (D->getLocation().isValid() && |
| getASTContext().getSourceManager(). |
| isInExternCSystemHeader(D->getLocation())) |
| return false; |
| |
| // Variables at global scope are not mangled. |
| if (!FD) { |
| const DeclContext *DC = D->getDeclContext(); |
| // Check for extern variable declared locally. |
| if (isa<FunctionDecl>(DC) && D->hasLinkage()) |
| while (!DC->isNamespace() && !DC->isTranslationUnit()) |
| DC = DC->getParent(); |
| if (DC->isTranslationUnit()) |
| return false; |
| } |
| |
| // C functions and "main" are not mangled. |
| if ((FD && FD->isMain()) || isInCLinkageSpecification(D)) |
| return false; |
| |
| return true; |
| } |
| |
| void CXXNameMangler::mangle(const NamedDecl *D, llvm::StringRef Prefix) { |
| // Any decl can be declared with __asm("foo") on it, and this takes precedence |
| // over all other naming in the .o file. |
| if (const AsmLabelAttr *ALA = D->getAttr<AsmLabelAttr>()) { |
| // If we have an asm name, then we use it as the mangling. |
| Out << '\01'; // LLVM IR Marker for __asm("foo") |
| Out << ALA->getLabel(); |
| return; |
| } |
| |
| // <mangled-name> ::= _Z <encoding> |
| // ::= <data name> |
| // ::= <special-name> |
| Out << Prefix; |
| if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) |
| mangleFunctionEncoding(FD); |
| else |
| mangleName(cast<VarDecl>(D)); |
| } |
| |
| void CXXNameMangler::mangleFunctionEncoding(const FunctionDecl *FD) { |
| // <encoding> ::= <function name> <bare-function-type> |
| mangleName(FD); |
| |
| // Don't mangle in the type if this isn't a decl we should typically mangle. |
| if (!Context.shouldMangleDeclName(FD)) |
| return; |
| |
| // Whether the mangling of a function type includes the return type depends on |
| // the context and the nature of the function. The rules for deciding whether |
| // the return type is included are: |
| // |
| // 1. Template functions (names or types) have return types encoded, with |
| // the exceptions listed below. |
| // 2. Function types not appearing as part of a function name mangling, |
| // e.g. parameters, pointer types, etc., have return type encoded, with the |
| // exceptions listed below. |
| // 3. Non-template function names do not have return types encoded. |
| // |
| // The exceptions mentioned in (1) and (2) above, for which the return type is |
| // never included, are |
| // 1. Constructors. |
| // 2. Destructors. |
| // 3. Conversion operator functions, e.g. operator int. |
| bool MangleReturnType = false; |
| if (FunctionTemplateDecl *PrimaryTemplate = FD->getPrimaryTemplate()) { |
| if (!(isa<CXXConstructorDecl>(FD) || isa<CXXDestructorDecl>(FD) || |
| isa<CXXConversionDecl>(FD))) |
| MangleReturnType = true; |
| |
| // Mangle the type of the primary template. |
| FD = PrimaryTemplate->getTemplatedDecl(); |
| } |
| |
| // Do the canonicalization out here because parameter types can |
| // undergo additional canonicalization (e.g. array decay). |
| FunctionType *FT = cast<FunctionType>(Context.getASTContext() |
| .getCanonicalType(FD->getType())); |
| |
| mangleBareFunctionType(FT, MangleReturnType); |
| } |
| |
| /// isStd - Return whether a given namespace is the 'std' namespace. |
| static bool isStd(const NamespaceDecl *NS) { |
| const IdentifierInfo *II = NS->getOriginalNamespace()->getIdentifier(); |
| return II && II->isStr("std"); |
| } |
| |
| static const DeclContext *IgnoreLinkageSpecDecls(const DeclContext *DC) { |
| while (isa<LinkageSpecDecl>(DC)) { |
| assert(cast<LinkageSpecDecl>(DC)->getLanguage() == |
| LinkageSpecDecl::lang_cxx && "Unexpected linkage decl!"); |
| DC = DC->getParent(); |
| } |
| |
| return DC; |
| } |
| |
| // isStdNamespace - Return whether a given decl context is a toplevel 'std' |
| // namespace. |
| static bool isStdNamespace(const DeclContext *DC) { |
| if (!DC->isNamespace()) |
| return false; |
| |
| if (!IgnoreLinkageSpecDecls(DC->getParent())->isTranslationUnit()) |
| return false; |
| |
| return isStd(cast<NamespaceDecl>(DC)); |
| } |
| |
| static const TemplateDecl * |
| isTemplate(const NamedDecl *ND, const TemplateArgumentList *&TemplateArgs) { |
| // Check if we have a function template. |
| if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)){ |
| if (const TemplateDecl *TD = FD->getPrimaryTemplate()) { |
| TemplateArgs = FD->getTemplateSpecializationArgs(); |
| return TD; |
| } |
| } |
| |
| // Check if we have a class template. |
| if (const ClassTemplateSpecializationDecl *Spec = |
| dyn_cast<ClassTemplateSpecializationDecl>(ND)) { |
| TemplateArgs = &Spec->getTemplateArgs(); |
| return Spec->getSpecializedTemplate(); |
| } |
| |
| return 0; |
| } |
| |
| void CXXNameMangler::mangleName(const NamedDecl *ND) { |
| // <name> ::= <nested-name> |
| // ::= <unscoped-name> |
| // ::= <unscoped-template-name> <template-args> |
| // ::= <local-name> |
| // |
| const DeclContext *DC = ND->getDeclContext(); |
| |
| // If this is an extern variable declared locally, the relevant DeclContext |
| // is that of the containing namespace, or the translation unit. |
| if (isa<FunctionDecl>(DC) && ND->hasLinkage()) |
| while (!DC->isNamespace() && !DC->isTranslationUnit()) |
| DC = DC->getParent(); |
| |
| while (isa<LinkageSpecDecl>(DC)) |
| DC = DC->getParent(); |
| |
| if (DC->isTranslationUnit() || isStdNamespace(DC)) { |
| // Check if we have a template. |
| const TemplateArgumentList *TemplateArgs = 0; |
| if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) { |
| mangleUnscopedTemplateName(TD); |
| mangleTemplateArgs(*TemplateArgs); |
| return; |
| } |
| |
| mangleUnscopedName(ND); |
| return; |
| } |
| |
| if (isa<FunctionDecl>(DC) || isa<ObjCMethodDecl>(DC)) { |
| mangleLocalName(ND); |
| return; |
| } |
| |
| mangleNestedName(ND, DC); |
| } |
| void CXXNameMangler::mangleName(const TemplateDecl *TD, |
| const TemplateArgument *TemplateArgs, |
| unsigned NumTemplateArgs) { |
| const DeclContext *DC = IgnoreLinkageSpecDecls(TD->getDeclContext()); |
| |
| if (DC->isTranslationUnit() || isStdNamespace(DC)) { |
| mangleUnscopedTemplateName(TD); |
| mangleTemplateArgs(TemplateArgs, NumTemplateArgs); |
| } else { |
| mangleNestedName(TD, TemplateArgs, NumTemplateArgs); |
| } |
| } |
| |
| void CXXNameMangler::mangleUnscopedName(const NamedDecl *ND) { |
| // <unscoped-name> ::= <unqualified-name> |
| // ::= St <unqualified-name> # ::std:: |
| if (isStdNamespace(ND->getDeclContext())) |
| Out << "St"; |
| |
| mangleUnqualifiedName(ND); |
| } |
| |
| void CXXNameMangler::mangleUnscopedTemplateName(const TemplateDecl *ND) { |
| // <unscoped-template-name> ::= <unscoped-name> |
| // ::= <substitution> |
| if (mangleSubstitution(ND)) |
| return; |
| |
| mangleUnscopedName(ND->getTemplatedDecl()); |
| addSubstitution(ND); |
| } |
| |
| void CXXNameMangler::mangleNumber(int64_t Number) { |
| // <number> ::= [n] <non-negative decimal integer> |
| if (Number < 0) { |
| Out << 'n'; |
| Number = -Number; |
| } |
| |
| Out << Number; |
| } |
| |
| void CXXNameMangler::mangleCallOffset(const ThunkAdjustment &Adjustment) { |
| // <call-offset> ::= h <nv-offset> _ |
| // ::= v <v-offset> _ |
| // <nv-offset> ::= <offset number> # non-virtual base override |
| // <v-offset> ::= <offset number> _ <virtual offset number> |
| // # virtual base override, with vcall offset |
| if (!Adjustment.Virtual) { |
| Out << 'h'; |
| mangleNumber(Adjustment.NonVirtual); |
| Out << '_'; |
| return; |
| } |
| |
| Out << 'v'; |
| mangleNumber(Adjustment.NonVirtual); |
| Out << '_'; |
| mangleNumber(Adjustment.Virtual); |
| Out << '_'; |
| } |
| |
| void CXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND) { |
| // <unqualified-name> ::= <operator-name> |
| // ::= <ctor-dtor-name> |
| // ::= <source-name> |
| DeclarationName Name = ND->getDeclName(); |
| switch (Name.getNameKind()) { |
| case DeclarationName::Identifier: { |
| if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) { |
| if (NS->isAnonymousNamespace()) { |
| // This is how gcc mangles these names. It's apparently |
| // always '1', no matter how many different anonymous |
| // namespaces appear in a context. |
| Out << "12_GLOBAL__N_1"; |
| break; |
| } |
| } |
| |
| if (const IdentifierInfo *II = Name.getAsIdentifierInfo()) { |
| mangleSourceName(II); |
| break; |
| } |
| |
| // We must have an anonymous struct. |
| const TagDecl *TD = cast<TagDecl>(ND); |
| if (const TypedefDecl *D = TD->getTypedefForAnonDecl()) { |
| assert(TD->getDeclContext() == D->getDeclContext() && |
| "Typedef should not be in another decl context!"); |
| assert(D->getDeclName().getAsIdentifierInfo() && |
| "Typedef was not named!"); |
| mangleSourceName(D->getDeclName().getAsIdentifierInfo()); |
| break; |
| } |
| |
| // Get a unique id for the anonymous struct. |
| uint64_t AnonStructId = Context.getAnonymousStructId(TD); |
| |
| // Mangle it as a source name in the form |
| // [n] $_<id> |
| // where n is the length of the string. |
| llvm::SmallString<8> Str; |
| Str += "$_"; |
| Str += llvm::utostr(AnonStructId); |
| |
| Out << Str.size(); |
| Out << Str.str(); |
| break; |
| } |
| |
| case DeclarationName::ObjCZeroArgSelector: |
| case DeclarationName::ObjCOneArgSelector: |
| case DeclarationName::ObjCMultiArgSelector: |
| assert(false && "Can't mangle Objective-C selector names here!"); |
| break; |
| |
| case DeclarationName::CXXConstructorName: |
| if (ND == Structor) |
| // If the named decl is the C++ constructor we're mangling, use the type |
| // we were given. |
| mangleCXXCtorType(static_cast<CXXCtorType>(StructorType)); |
| else |
| // Otherwise, use the complete constructor name. This is relevant if a |
| // class with a constructor is declared within a constructor. |
| mangleCXXCtorType(Ctor_Complete); |
| break; |
| |
| case DeclarationName::CXXDestructorName: |
| if (ND == Structor) |
| // If the named decl is the C++ destructor we're mangling, use the type we |
| // were given. |
| mangleCXXDtorType(static_cast<CXXDtorType>(StructorType)); |
| else |
| // Otherwise, use the complete destructor name. This is relevant if a |
| // class with a destructor is declared within a destructor. |
| mangleCXXDtorType(Dtor_Complete); |
| break; |
| |
| case DeclarationName::CXXConversionFunctionName: |
| // <operator-name> ::= cv <type> # (cast) |
| Out << "cv"; |
| mangleType(Context.getASTContext().getCanonicalType(Name.getCXXNameType())); |
| break; |
| |
| case DeclarationName::CXXOperatorName: { |
| unsigned Arity = cast<FunctionDecl>(ND)->getNumParams(); |
| |
| // If we have a C++ member function, we need to include the 'this' pointer. |
| // FIXME: This does not make sense for operators that are static, but their |
| // names stay the same regardless of the arity (operator new for instance). |
| if (isa<CXXMethodDecl>(ND)) |
| Arity++; |
| mangleOperatorName(Name.getCXXOverloadedOperator(), Arity); |
| break; |
| } |
| |
| case DeclarationName::CXXLiteralOperatorName: |
| // FIXME: This mangling is not yet official. |
| Out << "li"; |
| mangleSourceName(Name.getCXXLiteralIdentifier()); |
| break; |
| |
| case DeclarationName::CXXUsingDirective: |
| assert(false && "Can't mangle a using directive name!"); |
| break; |
| } |
| } |
| |
| void CXXNameMangler::mangleSourceName(const IdentifierInfo *II) { |
| // <source-name> ::= <positive length number> <identifier> |
| // <number> ::= [n] <non-negative decimal integer> |
| // <identifier> ::= <unqualified source code identifier> |
| Out << II->getLength() << II->getName(); |
| } |
| |
| void CXXNameMangler::mangleNestedName(const NamedDecl *ND, |
| const DeclContext *DC) { |
| // <nested-name> ::= N [<CV-qualifiers>] <prefix> <unqualified-name> E |
| // ::= N [<CV-qualifiers>] <template-prefix> <template-args> E |
| |
| Out << 'N'; |
| if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(ND)) |
| mangleQualifiers(Qualifiers::fromCVRMask(Method->getTypeQualifiers())); |
| |
| // Check if we have a template. |
| const TemplateArgumentList *TemplateArgs = 0; |
| if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) { |
| mangleTemplatePrefix(TD); |
| mangleTemplateArgs(*TemplateArgs); |
| } else { |
| manglePrefix(DC); |
| mangleUnqualifiedName(ND); |
| } |
| |
| Out << 'E'; |
| } |
| void CXXNameMangler::mangleNestedName(const TemplateDecl *TD, |
| const TemplateArgument *TemplateArgs, |
| unsigned NumTemplateArgs) { |
| // <nested-name> ::= N [<CV-qualifiers>] <template-prefix> <template-args> E |
| |
| Out << 'N'; |
| |
| mangleTemplatePrefix(TD); |
| mangleTemplateArgs(TemplateArgs, NumTemplateArgs); |
| |
| Out << 'E'; |
| } |
| |
| void CXXNameMangler::mangleLocalName(const NamedDecl *ND) { |
| // <local-name> := Z <function encoding> E <entity name> [<discriminator>] |
| // := Z <function encoding> E s [<discriminator>] |
| // <discriminator> := _ <non-negative number> |
| Out << 'Z'; |
| |
| if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(ND->getDeclContext())) |
| mangleObjCMethodName(MD); |
| else |
| mangleFunctionEncoding(cast<FunctionDecl>(ND->getDeclContext())); |
| |
| Out << 'E'; |
| mangleUnqualifiedName(ND); |
| } |
| |
| void CXXNameMangler::manglePrefix(const DeclContext *DC) { |
| // <prefix> ::= <prefix> <unqualified-name> |
| // ::= <template-prefix> <template-args> |
| // ::= <template-param> |
| // ::= # empty |
| // ::= <substitution> |
| |
| while (isa<LinkageSpecDecl>(DC)) |
| DC = DC->getParent(); |
| |
| if (DC->isTranslationUnit()) |
| return; |
| |
| if (mangleSubstitution(cast<NamedDecl>(DC))) |
| return; |
| |
| // Check if we have a template. |
| const TemplateArgumentList *TemplateArgs = 0; |
| if (const TemplateDecl *TD = isTemplate(cast<NamedDecl>(DC), TemplateArgs)) { |
| mangleTemplatePrefix(TD); |
| mangleTemplateArgs(*TemplateArgs); |
| } else { |
| manglePrefix(DC->getParent()); |
| mangleUnqualifiedName(cast<NamedDecl>(DC)); |
| } |
| |
| addSubstitution(cast<NamedDecl>(DC)); |
| } |
| |
| void CXXNameMangler::mangleTemplatePrefix(const TemplateDecl *ND) { |
| // <template-prefix> ::= <prefix> <template unqualified-name> |
| // ::= <template-param> |
| // ::= <substitution> |
| |
| if (mangleSubstitution(ND)) |
| return; |
| |
| // FIXME: <template-param> |
| |
| manglePrefix(ND->getDeclContext()); |
| mangleUnqualifiedName(ND->getTemplatedDecl()); |
| |
| addSubstitution(ND); |
| } |
| |
| void |
| CXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity) { |
| switch (OO) { |
| // <operator-name> ::= nw # new |
| case OO_New: Out << "nw"; break; |
| // ::= na # new[] |
| case OO_Array_New: Out << "na"; break; |
| // ::= dl # delete |
| case OO_Delete: Out << "dl"; break; |
| // ::= da # delete[] |
| case OO_Array_Delete: Out << "da"; break; |
| // ::= ps # + (unary) |
| // ::= pl # + |
| case OO_Plus: |
| assert((Arity == 1 || Arity == 2) && "Invalid arity!"); |
| Out << (Arity == 1? "ps" : "pl"); break; |
| // ::= ng # - (unary) |
| // ::= mi # - |
| case OO_Minus: |
| assert((Arity == 1 || Arity == 2) && "Invalid arity!"); |
| Out << (Arity == 1? "ng" : "mi"); break; |
| // ::= ad # & (unary) |
| // ::= an # & |
| case OO_Amp: |
| assert((Arity == 1 || Arity == 2) && "Invalid arity!"); |
| Out << (Arity == 1? "ad" : "an"); break; |
| // ::= de # * (unary) |
| // ::= ml # * |
| case OO_Star: |
| assert((Arity == 1 || Arity == 2) && "Invalid arity!"); |
| Out << (Arity == 1? "de" : "ml"); break; |
| // ::= co # ~ |
| case OO_Tilde: Out << "co"; break; |
| // ::= dv # / |
| case OO_Slash: Out << "dv"; break; |
| // ::= rm # % |
| case OO_Percent: Out << "rm"; break; |
| // ::= or # | |
| case OO_Pipe: Out << "or"; break; |
| // ::= eo # ^ |
| case OO_Caret: Out << "eo"; break; |
| // ::= aS # = |
| case OO_Equal: Out << "aS"; break; |
| // ::= pL # += |
| case OO_PlusEqual: Out << "pL"; break; |
| // ::= mI # -= |
| case OO_MinusEqual: Out << "mI"; break; |
| // ::= mL # *= |
| case OO_StarEqual: Out << "mL"; break; |
| // ::= dV # /= |
| case OO_SlashEqual: Out << "dV"; break; |
| // ::= rM # %= |
| case OO_PercentEqual: Out << "rM"; break; |
| // ::= aN # &= |
| case OO_AmpEqual: Out << "aN"; break; |
| // ::= oR # |= |
| case OO_PipeEqual: Out << "oR"; break; |
| // ::= eO # ^= |
| case OO_CaretEqual: Out << "eO"; break; |
| // ::= ls # << |
| case OO_LessLess: Out << "ls"; break; |
| // ::= rs # >> |
| case OO_GreaterGreater: Out << "rs"; break; |
| // ::= lS # <<= |
| case OO_LessLessEqual: Out << "lS"; break; |
| // ::= rS # >>= |
| case OO_GreaterGreaterEqual: Out << "rS"; break; |
| // ::= eq # == |
| case OO_EqualEqual: Out << "eq"; break; |
| // ::= ne # != |
| case OO_ExclaimEqual: Out << "ne"; break; |
| // ::= lt # < |
| case OO_Less: Out << "lt"; break; |
| // ::= gt # > |
| case OO_Greater: Out << "gt"; break; |
| // ::= le # <= |
| case OO_LessEqual: Out << "le"; break; |
| // ::= ge # >= |
| case OO_GreaterEqual: Out << "ge"; break; |
| // ::= nt # ! |
| case OO_Exclaim: Out << "nt"; break; |
| // ::= aa # && |
| case OO_AmpAmp: Out << "aa"; break; |
| // ::= oo # || |
| case OO_PipePipe: Out << "oo"; break; |
| // ::= pp # ++ |
| case OO_PlusPlus: Out << "pp"; break; |
| // ::= mm # -- |
| case OO_MinusMinus: Out << "mm"; break; |
| // ::= cm # , |
| case OO_Comma: Out << "cm"; break; |
| // ::= pm # ->* |
| case OO_ArrowStar: Out << "pm"; break; |
| // ::= pt # -> |
| case OO_Arrow: Out << "pt"; break; |
| // ::= cl # () |
| case OO_Call: Out << "cl"; break; |
| // ::= ix # [] |
| case OO_Subscript: Out << "ix"; break; |
| |
| // ::= qu # ? |
| // The conditional operator can't be overloaded, but we still handle it when |
| // mangling expressions. |
| case OO_Conditional: Out << "qu"; break; |
| |
| case OO_None: |
| case NUM_OVERLOADED_OPERATORS: |
| assert(false && "Not an overloaded operator"); |
| break; |
| } |
| } |
| |
| void CXXNameMangler::mangleQualifiers(Qualifiers Quals) { |
| // <CV-qualifiers> ::= [r] [V] [K] # restrict (C99), volatile, const |
| if (Quals.hasRestrict()) |
| Out << 'r'; |
| if (Quals.hasVolatile()) |
| Out << 'V'; |
| if (Quals.hasConst()) |
| Out << 'K'; |
| |
| // FIXME: For now, just drop all extension qualifiers on the floor. |
| } |
| |
| void CXXNameMangler::mangleObjCMethodName(const ObjCMethodDecl *MD) { |
| llvm::SmallString<64> Name; |
| llvm::raw_svector_ostream OS(Name); |
| |
| const ObjCContainerDecl *CD = |
| dyn_cast<ObjCContainerDecl>(MD->getDeclContext()); |
| assert (CD && "Missing container decl in GetNameForMethod"); |
| OS << (MD->isInstanceMethod() ? '-' : '+') << '[' << CD->getName(); |
| if (const ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(CD)) |
| OS << '(' << CID->getNameAsString() << ')'; |
| OS << ' ' << MD->getSelector().getAsString() << ']'; |
| |
| Out << OS.str().size() << OS.str(); |
| } |
| |
| void CXXNameMangler::mangleType(QualType T) { |
| // Only operate on the canonical type! |
| T = Context.getASTContext().getCanonicalType(T); |
| |
| bool IsSubstitutable = T.hasLocalQualifiers() || !isa<BuiltinType>(T); |
| if (IsSubstitutable && mangleSubstitution(T)) |
| return; |
| |
| if (Qualifiers Quals = T.getLocalQualifiers()) { |
| mangleQualifiers(Quals); |
| // Recurse: even if the qualified type isn't yet substitutable, |
| // the unqualified type might be. |
| mangleType(T.getLocalUnqualifiedType()); |
| } else { |
| switch (T->getTypeClass()) { |
| #define ABSTRACT_TYPE(CLASS, PARENT) |
| #define NON_CANONICAL_TYPE(CLASS, PARENT) \ |
| case Type::CLASS: \ |
| llvm_unreachable("can't mangle non-canonical type " #CLASS "Type"); \ |
| return; |
| #define TYPE(CLASS, PARENT) \ |
| case Type::CLASS: \ |
| mangleType(static_cast<const CLASS##Type*>(T.getTypePtr())); \ |
| break; |
| #include "clang/AST/TypeNodes.def" |
| } |
| } |
| |
| // Add the substitution. |
| if (IsSubstitutable) |
| addSubstitution(T); |
| } |
| |
| void CXXNameMangler::mangleType(const BuiltinType *T) { |
| // <type> ::= <builtin-type> |
| // <builtin-type> ::= v # void |
| // ::= w # wchar_t |
| // ::= b # bool |
| // ::= c # char |
| // ::= a # signed char |
| // ::= h # unsigned char |
| // ::= s # short |
| // ::= t # unsigned short |
| // ::= i # int |
| // ::= j # unsigned int |
| // ::= l # long |
| // ::= m # unsigned long |
| // ::= x # long long, __int64 |
| // ::= y # unsigned long long, __int64 |
| // ::= n # __int128 |
| // UNSUPPORTED: ::= o # unsigned __int128 |
| // ::= f # float |
| // ::= d # double |
| // ::= e # long double, __float80 |
| // UNSUPPORTED: ::= g # __float128 |
| // UNSUPPORTED: ::= Dd # IEEE 754r decimal floating point (64 bits) |
| // UNSUPPORTED: ::= De # IEEE 754r decimal floating point (128 bits) |
| // UNSUPPORTED: ::= Df # IEEE 754r decimal floating point (32 bits) |
| // UNSUPPORTED: ::= Dh # IEEE 754r half-precision floating point (16 bits) |
| // ::= Di # char32_t |
| // ::= Ds # char16_t |
| // ::= u <source-name> # vendor extended type |
| // From our point of view, std::nullptr_t is a builtin, but as far as mangling |
| // is concerned, it's a type called std::nullptr_t. |
| switch (T->getKind()) { |
| case BuiltinType::Void: Out << 'v'; break; |
| case BuiltinType::Bool: Out << 'b'; break; |
| case BuiltinType::Char_U: case BuiltinType::Char_S: Out << 'c'; break; |
| case BuiltinType::UChar: Out << 'h'; break; |
| case BuiltinType::UShort: Out << 't'; break; |
| case BuiltinType::UInt: Out << 'j'; break; |
| case BuiltinType::ULong: Out << 'm'; break; |
| case BuiltinType::ULongLong: Out << 'y'; break; |
| case BuiltinType::UInt128: Out << 'o'; break; |
| case BuiltinType::SChar: Out << 'a'; break; |
| case BuiltinType::WChar: Out << 'w'; break; |
| case BuiltinType::Char16: Out << "Ds"; break; |
| case BuiltinType::Char32: Out << "Di"; break; |
| case BuiltinType::Short: Out << 's'; break; |
| case BuiltinType::Int: Out << 'i'; break; |
| case BuiltinType::Long: Out << 'l'; break; |
| case BuiltinType::LongLong: Out << 'x'; break; |
| case BuiltinType::Int128: Out << 'n'; break; |
| case BuiltinType::Float: Out << 'f'; break; |
| case BuiltinType::Double: Out << 'd'; break; |
| case BuiltinType::LongDouble: Out << 'e'; break; |
| case BuiltinType::NullPtr: Out << "St9nullptr_t"; break; |
| |
| case BuiltinType::Overload: |
| case BuiltinType::Dependent: |
| assert(false && |
| "Overloaded and dependent types shouldn't get to name mangling"); |
| break; |
| case BuiltinType::UndeducedAuto: |
| assert(0 && "Should not see undeduced auto here"); |
| break; |
| case BuiltinType::ObjCId: Out << "11objc_object"; break; |
| case BuiltinType::ObjCClass: Out << "10objc_class"; break; |
| case BuiltinType::ObjCSel: Out << "13objc_selector"; break; |
| } |
| } |
| |
| // <type> ::= <function-type> |
| // <function-type> ::= F [Y] <bare-function-type> E |
| void CXXNameMangler::mangleType(const FunctionProtoType *T) { |
| Out << 'F'; |
| // FIXME: We don't have enough information in the AST to produce the 'Y' |
| // encoding for extern "C" function types. |
| mangleBareFunctionType(T, /*MangleReturnType=*/true); |
| Out << 'E'; |
| } |
| void CXXNameMangler::mangleType(const FunctionNoProtoType *T) { |
| llvm_unreachable("Can't mangle K&R function prototypes"); |
| } |
| void CXXNameMangler::mangleBareFunctionType(const FunctionType *T, |
| bool MangleReturnType) { |
| // We should never be mangling something without a prototype. |
| const FunctionProtoType *Proto = cast<FunctionProtoType>(T); |
| |
| // <bare-function-type> ::= <signature type>+ |
| if (MangleReturnType) |
| mangleType(Proto->getResultType()); |
| |
| if (Proto->getNumArgs() == 0) { |
| Out << 'v'; |
| return; |
| } |
| |
| for (FunctionProtoType::arg_type_iterator Arg = Proto->arg_type_begin(), |
| ArgEnd = Proto->arg_type_end(); |
| Arg != ArgEnd; ++Arg) |
| mangleType(*Arg); |
| |
| // <builtin-type> ::= z # ellipsis |
| if (Proto->isVariadic()) |
| Out << 'z'; |
| } |
| |
| // <type> ::= <class-enum-type> |
| // <class-enum-type> ::= <name> |
| void CXXNameMangler::mangleType(const UnresolvedUsingType *T) { |
| mangleName(T->getDecl()); |
| } |
| |
| // <type> ::= <class-enum-type> |
| // <class-enum-type> ::= <name> |
| void CXXNameMangler::mangleType(const EnumType *T) { |
| mangleType(static_cast<const TagType*>(T)); |
| } |
| void CXXNameMangler::mangleType(const RecordType *T) { |
| mangleType(static_cast<const TagType*>(T)); |
| } |
| void CXXNameMangler::mangleType(const TagType *T) { |
| mangleName(T->getDecl()); |
| } |
| |
| // <type> ::= <array-type> |
| // <array-type> ::= A <positive dimension number> _ <element type> |
| // ::= A [<dimension expression>] _ <element type> |
| void CXXNameMangler::mangleType(const ConstantArrayType *T) { |
| Out << 'A' << T->getSize() << '_'; |
| mangleType(T->getElementType()); |
| } |
| void CXXNameMangler::mangleType(const VariableArrayType *T) { |
| Out << 'A'; |
| mangleExpression(T->getSizeExpr()); |
| Out << '_'; |
| mangleType(T->getElementType()); |
| } |
| void CXXNameMangler::mangleType(const DependentSizedArrayType *T) { |
| Out << 'A'; |
| mangleExpression(T->getSizeExpr()); |
| Out << '_'; |
| mangleType(T->getElementType()); |
| } |
| void CXXNameMangler::mangleType(const IncompleteArrayType *T) { |
| Out << 'A' << '_'; |
| mangleType(T->getElementType()); |
| } |
| |
| // <type> ::= <pointer-to-member-type> |
| // <pointer-to-member-type> ::= M <class type> <member type> |
| void CXXNameMangler::mangleType(const MemberPointerType *T) { |
| Out << 'M'; |
| mangleType(QualType(T->getClass(), 0)); |
| QualType PointeeType = T->getPointeeType(); |
| if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(PointeeType)) { |
| mangleQualifiers(Qualifiers::fromCVRMask(FPT->getTypeQuals())); |
| mangleType(FPT); |
| } else |
| mangleType(PointeeType); |
| } |
| |
| // <type> ::= <template-param> |
| void CXXNameMangler::mangleType(const TemplateTypeParmType *T) { |
| mangleTemplateParameter(T->getIndex()); |
| } |
| |
| // FIXME: <type> ::= <template-template-param> <template-args> |
| |
| // <type> ::= P <type> # pointer-to |
| void CXXNameMangler::mangleType(const PointerType *T) { |
| Out << 'P'; |
| mangleType(T->getPointeeType()); |
| } |
| void CXXNameMangler::mangleType(const ObjCObjectPointerType *T) { |
| Out << 'P'; |
| mangleType(T->getPointeeType()); |
| } |
| |
| // <type> ::= R <type> # reference-to |
| void CXXNameMangler::mangleType(const LValueReferenceType *T) { |
| Out << 'R'; |
| mangleType(T->getPointeeType()); |
| } |
| |
| // <type> ::= O <type> # rvalue reference-to (C++0x) |
| void CXXNameMangler::mangleType(const RValueReferenceType *T) { |
| Out << 'O'; |
| mangleType(T->getPointeeType()); |
| } |
| |
| // <type> ::= C <type> # complex pair (C 2000) |
| void CXXNameMangler::mangleType(const ComplexType *T) { |
| Out << 'C'; |
| mangleType(T->getElementType()); |
| } |
| |
| // GNU extension: vector types |
| void CXXNameMangler::mangleType(const VectorType *T) { |
| Out << "U8__vector"; |
| mangleType(T->getElementType()); |
| } |
| void CXXNameMangler::mangleType(const ExtVectorType *T) { |
| mangleType(static_cast<const VectorType*>(T)); |
| } |
| void CXXNameMangler::mangleType(const DependentSizedExtVectorType *T) { |
| Out << "U8__vector"; |
| mangleType(T->getElementType()); |
| } |
| |
| void CXXNameMangler::mangleType(const ObjCInterfaceType *T) { |
| mangleSourceName(T->getDecl()->getIdentifier()); |
| } |
| |
| void CXXNameMangler::mangleType(const BlockPointerType *T) { |
| Out << "U13block_pointer"; |
| mangleType(T->getPointeeType()); |
| } |
| |
| void CXXNameMangler::mangleType(const TemplateSpecializationType *T) { |
| TemplateDecl *TD = T->getTemplateName().getAsTemplateDecl(); |
| assert(TD && "FIXME: Support dependent template names!"); |
| |
| mangleName(TD, T->getArgs(), T->getNumArgs()); |
| } |
| |
| void CXXNameMangler::mangleType(const TypenameType *T) { |
| // Typename types are always nested |
| Out << 'N'; |
| |
| const Type *QTy = T->getQualifier()->getAsType(); |
| if (const TemplateSpecializationType *TST = |
| dyn_cast<TemplateSpecializationType>(QTy)) { |
| if (!mangleSubstitution(QualType(TST, 0))) { |
| TemplateDecl *TD = TST->getTemplateName().getAsTemplateDecl(); |
| |
| mangleTemplatePrefix(TD); |
| mangleTemplateArgs(TST->getArgs(), TST->getNumArgs()); |
| addSubstitution(QualType(TST, 0)); |
| } |
| } else if (const TemplateTypeParmType *TTPT = |
| dyn_cast<TemplateTypeParmType>(QTy)) { |
| // We use the QualType mangle type variant here because it handles |
| // substitutions. |
| mangleType(QualType(TTPT, 0)); |
| } else |
| assert(false && "Unhandled type!"); |
| |
| mangleSourceName(T->getIdentifier()); |
| |
| Out << 'E'; |
| } |
| |
| void CXXNameMangler::mangleIntegerLiteral(QualType T, |
| const llvm::APSInt &Value) { |
| // <expr-primary> ::= L <type> <value number> E # integer literal |
| Out << 'L'; |
| |
| mangleType(T); |
| if (T->isBooleanType()) { |
| // Boolean values are encoded as 0/1. |
| Out << (Value.getBoolValue() ? '1' : '0'); |
| } else { |
| if (Value.isNegative()) |
| Out << 'n'; |
| Value.abs().print(Out, false); |
| } |
| Out << 'E'; |
| |
| } |
| |
| void CXXNameMangler::mangleExpression(const Expr *E) { |
| // <expression> ::= <unary operator-name> <expression> |
| // ::= <binary operator-name> <expression> <expression> |
| // ::= <trinary operator-name> <expression> <expression> <expression> |
| // ::= cl <expression>* E # call |
| // ::= cv <type> expression # conversion with one argument |
| // ::= cv <type> _ <expression>* E # conversion with a different number of arguments |
| // ::= st <type> # sizeof (a type) |
| // ::= at <type> # alignof (a type) |
| // ::= <template-param> |
| // ::= <function-param> |
| // ::= sr <type> <unqualified-name> # dependent name |
| // ::= sr <type> <unqualified-name> <template-args> # dependent template-id |
| // ::= sZ <template-param> # size of a parameter pack |
| // ::= <expr-primary> |
| switch (E->getStmtClass()) { |
| default: assert(false && "Unhandled expression kind!"); |
| |
| case Expr::UnaryOperatorClass: { |
| const UnaryOperator *UO = cast<UnaryOperator>(E); |
| mangleOperatorName(UnaryOperator::getOverloadedOperator(UO->getOpcode()), |
| /*Arity=*/1); |
| mangleExpression(UO->getSubExpr()); |
| break; |
| } |
| |
| case Expr::BinaryOperatorClass: { |
| const BinaryOperator *BO = cast<BinaryOperator>(E); |
| mangleOperatorName(BinaryOperator::getOverloadedOperator(BO->getOpcode()), |
| /*Arity=*/2); |
| mangleExpression(BO->getLHS()); |
| mangleExpression(BO->getRHS()); |
| break; |
| } |
| |
| case Expr::ConditionalOperatorClass: { |
| const ConditionalOperator *CO = cast<ConditionalOperator>(E); |
| mangleOperatorName(OO_Conditional, /*Arity=*/3); |
| mangleExpression(CO->getCond()); |
| mangleExpression(CO->getLHS()); |
| mangleExpression(CO->getRHS()); |
| break; |
| } |
| |
| case Expr::CXXOperatorCallExprClass: { |
| const CXXOperatorCallExpr *CE = cast<CXXOperatorCallExpr>(E); |
| unsigned NumArgs = CE->getNumArgs(); |
| mangleOperatorName(CE->getOperator(), /*Arity=*/NumArgs); |
| // Mangle the arguments. |
| for (unsigned i = 0; i != NumArgs; ++i) |
| mangleExpression(CE->getArg(i)); |
| break; |
| } |
| |
| case Expr::ParenExprClass: |
| mangleExpression(cast<ParenExpr>(E)->getSubExpr()); |
| break; |
| |
| case Expr::DeclRefExprClass: { |
| const Decl *D = cast<DeclRefExpr>(E)->getDecl(); |
| |
| switch (D->getKind()) { |
| default: assert(false && "Unhandled decl kind!"); |
| case Decl::NonTypeTemplateParm: { |
| const NonTypeTemplateParmDecl *PD = cast<NonTypeTemplateParmDecl>(D); |
| mangleTemplateParameter(PD->getIndex()); |
| break; |
| } |
| |
| } |
| |
| break; |
| } |
| |
| case Expr::DependentScopeDeclRefExprClass: { |
| const DependentScopeDeclRefExpr *DRE = cast<DependentScopeDeclRefExpr>(E); |
| const Type *QTy = DRE->getQualifier()->getAsType(); |
| assert(QTy && "Qualifier was not type!"); |
| |
| // ::= sr <type> <unqualified-name> # dependent name |
| Out << "sr"; |
| mangleType(QualType(QTy, 0)); |
| |
| assert(DRE->getDeclName().getNameKind() == DeclarationName::Identifier && |
| "Unhandled decl name kind!"); |
| mangleSourceName(DRE->getDeclName().getAsIdentifierInfo()); |
| |
| break; |
| } |
| |
| case Expr::IntegerLiteralClass: |
| mangleIntegerLiteral(E->getType(), |
| llvm::APSInt(cast<IntegerLiteral>(E)->getValue())); |
| break; |
| |
| } |
| } |
| |
| // FIXME: <type> ::= G <type> # imaginary (C 2000) |
| // FIXME: <type> ::= U <source-name> <type> # vendor extended type qualifier |
| |
| void CXXNameMangler::mangleCXXCtorType(CXXCtorType T) { |
| // <ctor-dtor-name> ::= C1 # complete object constructor |
| // ::= C2 # base object constructor |
| // ::= C3 # complete object allocating constructor |
| // |
| switch (T) { |
| case Ctor_Complete: |
| Out << "C1"; |
| break; |
| case Ctor_Base: |
| Out << "C2"; |
| break; |
| case Ctor_CompleteAllocating: |
| Out << "C3"; |
| break; |
| } |
| } |
| |
| void CXXNameMangler::mangleCXXDtorType(CXXDtorType T) { |
| // <ctor-dtor-name> ::= D0 # deleting destructor |
| // ::= D1 # complete object destructor |
| // ::= D2 # base object destructor |
| // |
| switch (T) { |
| case Dtor_Deleting: |
| Out << "D0"; |
| break; |
| case Dtor_Complete: |
| Out << "D1"; |
| break; |
| case Dtor_Base: |
| Out << "D2"; |
| break; |
| } |
| } |
| |
| void CXXNameMangler::mangleTemplateArgs(const TemplateArgumentList &L) { |
| // <template-args> ::= I <template-arg>+ E |
| Out << "I"; |
| for (unsigned i = 0, e = L.size(); i != e; ++i) |
| mangleTemplateArg(L[i]); |
| Out << "E"; |
| } |
| |
| void CXXNameMangler::mangleTemplateArgs(const TemplateArgument *TemplateArgs, |
| unsigned NumTemplateArgs) { |
| // <template-args> ::= I <template-arg>+ E |
| Out << "I"; |
| for (unsigned i = 0; i != NumTemplateArgs; ++i) |
| mangleTemplateArg(TemplateArgs[i]); |
| Out << "E"; |
| } |
| |
| void CXXNameMangler::mangleTemplateArg(const TemplateArgument &A) { |
| // <template-arg> ::= <type> # type or template |
| // ::= X <expression> E # expression |
| // ::= <expr-primary> # simple expressions |
| // ::= I <template-arg>* E # argument pack |
| // ::= sp <expression> # pack expansion of (C++0x) |
| switch (A.getKind()) { |
| default: |
| assert(0 && "Unknown template argument kind!"); |
| case TemplateArgument::Type: |
| mangleType(A.getAsType()); |
| break; |
| case TemplateArgument::Template: |
| mangleName(A.getAsTemplate().getAsTemplateDecl()); |
| break; |
| case TemplateArgument::Expression: |
| Out << 'X'; |
| mangleExpression(A.getAsExpr()); |
| Out << 'E'; |
| break; |
| case TemplateArgument::Integral: |
| mangleIntegerLiteral(A.getIntegralType(), *A.getAsIntegral()); |
| break; |
| case TemplateArgument::Declaration: { |
| // <expr-primary> ::= L <mangled-name> E # external name |
| |
| // FIXME: Clang produces AST's where pointer-to-member-function expressions |
| // and pointer-to-function expressions are represented as a declaration not |
| // an expression; this is not how gcc represents them and this changes the |
| // mangling. |
| Out << 'L'; |
| // References to external entities use the mangled name; if the name would |
| // not normally be manged then mangle it as unqualified. |
| // |
| // FIXME: The ABI specifies that external names here should have _Z, but |
| // gcc leaves this off. |
| mangle(cast<NamedDecl>(A.getAsDecl()), "Z"); |
| Out << 'E'; |
| break; |
| } |
| } |
| } |
| |
| void CXXNameMangler::mangleTemplateParameter(unsigned Index) { |
| // <template-param> ::= T_ # first template parameter |
| // ::= T <parameter-2 non-negative number> _ |
| if (Index == 0) |
| Out << "T_"; |
| else |
| Out << 'T' << (Index - 1) << '_'; |
| } |
| |
| // <substitution> ::= S <seq-id> _ |
| // ::= S_ |
| bool CXXNameMangler::mangleSubstitution(const NamedDecl *ND) { |
| // Try one of the standard substitutions first. |
| if (mangleStandardSubstitution(ND)) |
| return true; |
| |
| ND = cast<NamedDecl>(ND->getCanonicalDecl()); |
| return mangleSubstitution(reinterpret_cast<uintptr_t>(ND)); |
| } |
| |
| bool CXXNameMangler::mangleSubstitution(QualType T) { |
| if (!T.getCVRQualifiers()) { |
| if (const RecordType *RT = T->getAs<RecordType>()) |
| return mangleSubstitution(RT->getDecl()); |
| } |
| |
| uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr()); |
| |
| return mangleSubstitution(TypePtr); |
| } |
| |
| bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) { |
| llvm::DenseMap<uintptr_t, unsigned>::iterator I = |
| Substitutions.find(Ptr); |
| if (I == Substitutions.end()) |
| return false; |
| |
| unsigned SeqID = I->second; |
| if (SeqID == 0) |
| Out << "S_"; |
| else { |
| SeqID--; |
| |
| // <seq-id> is encoded in base-36, using digits and upper case letters. |
| char Buffer[10]; |
| char *BufferPtr = Buffer + 9; |
| |
| *BufferPtr = 0; |
| if (SeqID == 0) *--BufferPtr = '0'; |
| |
| while (SeqID) { |
| assert(BufferPtr > Buffer && "Buffer overflow!"); |
| |
| unsigned char c = static_cast<unsigned char>(SeqID) % 36; |
| |
| *--BufferPtr = (c < 10 ? '0' + c : 'A' + c - 10); |
| SeqID /= 36; |
| } |
| |
| Out << 'S' << BufferPtr << '_'; |
| } |
| |
| return true; |
| } |
| |
| static bool isCharType(QualType T) { |
| if (T.isNull()) |
| return false; |
| |
| return T->isSpecificBuiltinType(BuiltinType::Char_S) || |
| T->isSpecificBuiltinType(BuiltinType::Char_U); |
| } |
| |
| /// isCharSpecialization - Returns whether a given type is a template |
| /// specialization of a given name with a single argument of type char. |
| static bool isCharSpecialization(QualType T, const char *Name) { |
| if (T.isNull()) |
| return false; |
| |
| const RecordType *RT = T->getAs<RecordType>(); |
| if (!RT) |
| return false; |
| |
| const ClassTemplateSpecializationDecl *SD = |
| dyn_cast<ClassTemplateSpecializationDecl>(RT->getDecl()); |
| if (!SD) |
| return false; |
| |
| if (!isStdNamespace(SD->getDeclContext())) |
| return false; |
| |
| const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); |
| if (TemplateArgs.size() != 1) |
| return false; |
| |
| if (!isCharType(TemplateArgs[0].getAsType())) |
| return false; |
| |
| return SD->getIdentifier()->getName() == Name; |
| } |
| |
| template <std::size_t StrLen> |
| bool isStreamCharSpecialization(const ClassTemplateSpecializationDecl *SD, |
| const char (&Str)[StrLen]) { |
| if (!SD->getIdentifier()->isStr(Str)) |
| return false; |
| |
| const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); |
| if (TemplateArgs.size() != 2) |
| return false; |
| |
| if (!isCharType(TemplateArgs[0].getAsType())) |
| return false; |
| |
| if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits")) |
| return false; |
| |
| return true; |
| } |
| |
| bool CXXNameMangler::mangleStandardSubstitution(const NamedDecl *ND) { |
| // <substitution> ::= St # ::std:: |
| if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) { |
| if (isStd(NS)) { |
| Out << "St"; |
| return true; |
| } |
| } |
| |
| if (const ClassTemplateDecl *TD = dyn_cast<ClassTemplateDecl>(ND)) { |
| if (!isStdNamespace(TD->getDeclContext())) |
| return false; |
| |
| // <substitution> ::= Sa # ::std::allocator |
| if (TD->getIdentifier()->isStr("allocator")) { |
| Out << "Sa"; |
| return true; |
| } |
| |
| // <<substitution> ::= Sb # ::std::basic_string |
| if (TD->getIdentifier()->isStr("basic_string")) { |
| Out << "Sb"; |
| return true; |
| } |
| } |
| |
| if (const ClassTemplateSpecializationDecl *SD = |
| dyn_cast<ClassTemplateSpecializationDecl>(ND)) { |
| // <substitution> ::= Ss # ::std::basic_string<char, |
| // ::std::char_traits<char>, |
| // ::std::allocator<char> > |
| if (SD->getIdentifier()->isStr("basic_string")) { |
| const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs(); |
| |
| if (TemplateArgs.size() != 3) |
| return false; |
| |
| if (!isCharType(TemplateArgs[0].getAsType())) |
| return false; |
| |
| if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits")) |
| return false; |
| |
| if (!isCharSpecialization(TemplateArgs[2].getAsType(), "allocator")) |
| return false; |
| |
| Out << "Ss"; |
| return true; |
| } |
| |
| // <substitution> ::= Si # ::std::basic_istream<char, |
| // ::std::char_traits<char> > |
| if (isStreamCharSpecialization(SD, "basic_istream")) { |
| Out << "Si"; |
| return true; |
| } |
| |
| // <substitution> ::= So # ::std::basic_ostream<char, |
| // ::std::char_traits<char> > |
| if (isStreamCharSpecialization(SD, "basic_ostream")) { |
| Out << "So"; |
| return true; |
| } |
| |
| // <substitution> ::= Sd # ::std::basic_iostream<char, |
| // ::std::char_traits<char> > |
| if (isStreamCharSpecialization(SD, "basic_iostream")) { |
| Out << "Sd"; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void CXXNameMangler::addSubstitution(QualType T) { |
| if (!T.getCVRQualifiers()) { |
| if (const RecordType *RT = T->getAs<RecordType>()) { |
| addSubstitution(RT->getDecl()); |
| return; |
| } |
| } |
| |
| uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr()); |
| addSubstitution(TypePtr); |
| } |
| |
| void CXXNameMangler::addSubstitution(uintptr_t Ptr) { |
| unsigned SeqID = Substitutions.size(); |
| |
| assert(!Substitutions.count(Ptr) && "Substitution already exists!"); |
| Substitutions[Ptr] = SeqID; |
| } |
| |
| // |
| |
| /// \brief Mangles the name of the declaration D and emits that name to the |
| /// given output stream. |
| /// |
| /// If the declaration D requires a mangled name, this routine will emit that |
| /// mangled name to \p os and return true. Otherwise, \p os will be unchanged |
| /// and this routine will return false. In this case, the caller should just |
| /// emit the identifier of the declaration (\c D->getIdentifier()) as its |
| /// name. |
| void MangleContext::mangleName(const NamedDecl *D, |
| llvm::SmallVectorImpl<char> &Res) { |
| assert((isa<FunctionDecl>(D) || isa<VarDecl>(D)) && |
| "Invalid mangleName() call, argument is not a variable or function!"); |
| assert(!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) && |
| "Invalid mangleName() call on 'structor decl!"); |
| |
| PrettyStackTraceDecl CrashInfo(D, SourceLocation(), |
| getASTContext().getSourceManager(), |
| "Mangling declaration"); |
| |
| CXXNameMangler Mangler(*this, Res); |
| return Mangler.mangle(D); |
| } |
| |
| void MangleContext::mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type, |
| llvm::SmallVectorImpl<char> &Res) { |
| CXXNameMangler Mangler(*this, Res, D, Type); |
| Mangler.mangle(D); |
| } |
| |
| void MangleContext::mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type, |
| llvm::SmallVectorImpl<char> &Res) { |
| CXXNameMangler Mangler(*this, Res, D, Type); |
| Mangler.mangle(D); |
| } |
| |
| /// \brief Mangles the a thunk with the offset n for the declaration D and |
| /// emits that name to the given output stream. |
| void MangleContext::mangleThunk(const FunctionDecl *FD, |
| const ThunkAdjustment &ThisAdjustment, |
| llvm::SmallVectorImpl<char> &Res) { |
| assert(!isa<CXXDestructorDecl>(FD) && |
| "Use mangleCXXDtor for destructor decls!"); |
| |
| // <special-name> ::= T <call-offset> <base encoding> |
| // # base is the nominal target function of thunk |
| CXXNameMangler Mangler(*this, Res); |
| Mangler.getStream() << "_ZT"; |
| Mangler.mangleCallOffset(ThisAdjustment); |
| Mangler.mangleFunctionEncoding(FD); |
| } |
| |
| void MangleContext::mangleCXXDtorThunk(const CXXDestructorDecl *D, |
| CXXDtorType Type, |
| const ThunkAdjustment &ThisAdjustment, |
| llvm::SmallVectorImpl<char> &Res) { |
| // <special-name> ::= T <call-offset> <base encoding> |
| // # base is the nominal target function of thunk |
| CXXNameMangler Mangler(*this, Res, D, Type); |
| Mangler.getStream() << "_ZT"; |
| Mangler.mangleCallOffset(ThisAdjustment); |
| Mangler.mangleFunctionEncoding(D); |
| } |
| |
| /// \brief Mangles the a covariant thunk for the declaration D and emits that |
| /// name to the given output stream. |
| void |
| MangleContext::mangleCovariantThunk(const FunctionDecl *FD, |
| const CovariantThunkAdjustment& Adjustment, |
| llvm::SmallVectorImpl<char> &Res) { |
| assert(!isa<CXXDestructorDecl>(FD) && |
| "No such thing as a covariant thunk for a destructor!"); |
| |
| // <special-name> ::= Tc <call-offset> <call-offset> <base encoding> |
| // # base is the nominal target function of thunk |
| // # first call-offset is 'this' adjustment |
| // # second call-offset is result adjustment |
| CXXNameMangler Mangler(*this, Res); |
| Mangler.getStream() << "_ZTc"; |
| Mangler.mangleCallOffset(Adjustment.ThisAdjustment); |
| Mangler.mangleCallOffset(Adjustment.ReturnAdjustment); |
| Mangler.mangleFunctionEncoding(FD); |
| } |
| |
| /// mangleGuardVariable - Returns the mangled name for a guard variable |
| /// for the passed in VarDecl. |
| void MangleContext::mangleGuardVariable(const VarDecl *D, |
| llvm::SmallVectorImpl<char> &Res) { |
| // <special-name> ::= GV <object name> # Guard variable for one-time |
| // # initialization |
| CXXNameMangler Mangler(*this, Res); |
| Mangler.getStream() << "_ZGV"; |
| Mangler.mangleName(D); |
| } |
| |
| void MangleContext::mangleCXXVtable(const CXXRecordDecl *RD, |
| llvm::SmallVectorImpl<char> &Res) { |
| // <special-name> ::= TV <type> # virtual table |
| CXXNameMangler Mangler(*this, Res); |
| Mangler.getStream() << "_ZTV"; |
| Mangler.mangleName(RD); |
| } |
| |
| void MangleContext::mangleCXXVTT(const CXXRecordDecl *RD, |
| llvm::SmallVectorImpl<char> &Res) { |
| // <special-name> ::= TT <type> # VTT structure |
| CXXNameMangler Mangler(*this, Res); |
| Mangler.getStream() << "_ZTT"; |
| Mangler.mangleName(RD); |
| } |
| |
| void MangleContext::mangleCXXCtorVtable(const CXXRecordDecl *RD, int64_t Offset, |
| const CXXRecordDecl *Type, |
| llvm::SmallVectorImpl<char> &Res) { |
| // <special-name> ::= TC <type> <offset number> _ <base type> |
| CXXNameMangler Mangler(*this, Res); |
| Mangler.getStream() << "_ZTC"; |
| Mangler.mangleName(RD); |
| Mangler.getStream() << Offset; |
| Mangler.getStream() << "_"; |
| Mangler.mangleName(Type); |
| } |
| |
| void MangleContext::mangleCXXRTTI(QualType Ty, |
| llvm::SmallVectorImpl<char> &Res) { |
| // <special-name> ::= TI <type> # typeinfo structure |
| assert(!Ty.hasQualifiers() && "RTTI info cannot have top-level qualifiers"); |
| CXXNameMangler Mangler(*this, Res); |
| Mangler.getStream() << "_ZTI"; |
| Mangler.mangleType(Ty); |
| } |
| |
| void MangleContext::mangleCXXRTTIName(QualType Ty, |
| llvm::SmallVectorImpl<char> &Res) { |
| // <special-name> ::= TS <type> # typeinfo name (null terminated byte string) |
| CXXNameMangler Mangler(*this, Res); |
| Mangler.getStream() << "_ZTS"; |
| Mangler.mangleType(Ty); |
| } |