| //===--- ObjCMT.cpp - ObjC Migrate Tool -----------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "Transforms.h" |
| #include "clang/ARCMigrate/ARCMTActions.h" |
| #include "clang/AST/ASTConsumer.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/NSAPI.h" |
| #include "clang/AST/ParentMap.h" |
| #include "clang/AST/RecursiveASTVisitor.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Edit/Commit.h" |
| #include "clang/Edit/EditedSource.h" |
| #include "clang/Edit/EditsReceiver.h" |
| #include "clang/Edit/Rewriters.h" |
| #include "clang/Frontend/CompilerInstance.h" |
| #include "clang/Frontend/MultiplexConsumer.h" |
| #include "clang/Lex/PPConditionalDirectiveRecord.h" |
| #include "clang/Lex/Preprocessor.h" |
| #include "clang/Rewrite/Core/Rewriter.h" |
| #include "clang/Analysis/DomainSpecific/CocoaConventions.h" |
| #include "clang/StaticAnalyzer/Checkers/ObjCRetainCount.h" |
| #include "clang/AST/Attr.h" |
| #include "llvm/ADT/SmallString.h" |
| |
| using namespace clang; |
| using namespace arcmt; |
| using namespace ento::objc_retain; |
| |
| namespace { |
| |
| class ObjCMigrateASTConsumer : public ASTConsumer { |
| enum CF_BRIDGING_KIND { |
| CF_BRIDGING_NONE, |
| CF_BRIDGING_ENABLE, |
| CF_BRIDGING_MAY_INCLUDE |
| }; |
| |
| void migrateDecl(Decl *D); |
| void migrateObjCInterfaceDecl(ASTContext &Ctx, ObjCInterfaceDecl *D); |
| void migrateProtocolConformance(ASTContext &Ctx, |
| const ObjCImplementationDecl *ImpDecl); |
| void migrateNSEnumDecl(ASTContext &Ctx, const EnumDecl *EnumDcl, |
| const TypedefDecl *TypedefDcl); |
| void migrateInstanceType(ASTContext &Ctx, ObjCContainerDecl *CDecl); |
| void migrateMethodInstanceType(ASTContext &Ctx, ObjCContainerDecl *CDecl, |
| ObjCMethodDecl *OM); |
| void migrateFactoryMethod(ASTContext &Ctx, ObjCContainerDecl *CDecl, |
| ObjCMethodDecl *OM, |
| ObjCInstanceTypeFamily OIT_Family = OIT_None); |
| |
| void migrateCFAnnotation(ASTContext &Ctx, const Decl *Decl); |
| void AddCFAnnotations(ASTContext &Ctx, const CallEffects &CE, |
| const FunctionDecl *FuncDecl, bool ResultAnnotated); |
| void AddCFAnnotations(ASTContext &Ctx, const CallEffects &CE, |
| const ObjCMethodDecl *MethodDecl, bool ResultAnnotated); |
| |
| void AnnotateImplicitBridging(ASTContext &Ctx); |
| |
| CF_BRIDGING_KIND migrateAddFunctionAnnotation(ASTContext &Ctx, |
| const FunctionDecl *FuncDecl); |
| |
| void migrateARCSafeAnnotation(ASTContext &Ctx, ObjCContainerDecl *CDecl); |
| |
| CF_BRIDGING_KIND migrateAddMethodAnnotation(ASTContext &Ctx, |
| const ObjCMethodDecl *MethodDecl); |
| public: |
| std::string MigrateDir; |
| bool MigrateLiterals; |
| bool MigrateSubscripting; |
| bool MigrateProperty; |
| bool MigrateReadonlyProperty; |
| unsigned FileId; |
| OwningPtr<NSAPI> NSAPIObj; |
| OwningPtr<edit::EditedSource> Editor; |
| FileRemapper &Remapper; |
| FileManager &FileMgr; |
| const PPConditionalDirectiveRecord *PPRec; |
| Preprocessor &PP; |
| bool IsOutputFile; |
| llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ObjCProtocolDecls; |
| llvm::SmallVector<const Decl *, 8> CFFunctionIBCandidates; |
| |
| ObjCMigrateASTConsumer(StringRef migrateDir, |
| bool migrateLiterals, |
| bool migrateSubscripting, |
| bool migrateProperty, |
| bool migrateReadonlyProperty, |
| FileRemapper &remapper, |
| FileManager &fileMgr, |
| const PPConditionalDirectiveRecord *PPRec, |
| Preprocessor &PP, |
| bool isOutputFile = false) |
| : MigrateDir(migrateDir), |
| MigrateLiterals(migrateLiterals), |
| MigrateSubscripting(migrateSubscripting), |
| MigrateProperty(migrateProperty), |
| MigrateReadonlyProperty(migrateReadonlyProperty), |
| FileId(0), Remapper(remapper), FileMgr(fileMgr), PPRec(PPRec), PP(PP), |
| IsOutputFile(isOutputFile) { } |
| |
| protected: |
| virtual void Initialize(ASTContext &Context) { |
| NSAPIObj.reset(new NSAPI(Context)); |
| Editor.reset(new edit::EditedSource(Context.getSourceManager(), |
| Context.getLangOpts(), |
| PPRec)); |
| } |
| |
| virtual bool HandleTopLevelDecl(DeclGroupRef DG) { |
| for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I) |
| migrateDecl(*I); |
| return true; |
| } |
| virtual void HandleInterestingDecl(DeclGroupRef DG) { |
| // Ignore decls from the PCH. |
| } |
| virtual void HandleTopLevelDeclInObjCContainer(DeclGroupRef DG) { |
| ObjCMigrateASTConsumer::HandleTopLevelDecl(DG); |
| } |
| |
| virtual void HandleTranslationUnit(ASTContext &Ctx); |
| }; |
| |
| } |
| |
| ObjCMigrateAction::ObjCMigrateAction(FrontendAction *WrappedAction, |
| StringRef migrateDir, |
| bool migrateLiterals, |
| bool migrateSubscripting, |
| bool migrateProperty, |
| bool migrateReadonlyProperty) |
| : WrapperFrontendAction(WrappedAction), MigrateDir(migrateDir), |
| MigrateLiterals(migrateLiterals), MigrateSubscripting(migrateSubscripting), |
| MigrateProperty(migrateProperty), |
| MigrateReadonlyProperty(migrateReadonlyProperty), |
| CompInst(0) { |
| if (MigrateDir.empty()) |
| MigrateDir = "."; // user current directory if none is given. |
| } |
| |
| ASTConsumer *ObjCMigrateAction::CreateASTConsumer(CompilerInstance &CI, |
| StringRef InFile) { |
| PPConditionalDirectiveRecord * |
| PPRec = new PPConditionalDirectiveRecord(CompInst->getSourceManager()); |
| CompInst->getPreprocessor().addPPCallbacks(PPRec); |
| ASTConsumer * |
| WrappedConsumer = WrapperFrontendAction::CreateASTConsumer(CI, InFile); |
| ASTConsumer *MTConsumer = new ObjCMigrateASTConsumer(MigrateDir, |
| MigrateLiterals, |
| MigrateSubscripting, |
| MigrateProperty, |
| MigrateReadonlyProperty, |
| Remapper, |
| CompInst->getFileManager(), |
| PPRec, |
| CompInst->getPreprocessor()); |
| ASTConsumer *Consumers[] = { MTConsumer, WrappedConsumer }; |
| return new MultiplexConsumer(Consumers); |
| } |
| |
| bool ObjCMigrateAction::BeginInvocation(CompilerInstance &CI) { |
| Remapper.initFromDisk(MigrateDir, CI.getDiagnostics(), |
| /*ignoreIfFilesChanges=*/true); |
| CompInst = &CI; |
| CI.getDiagnostics().setIgnoreAllWarnings(true); |
| return true; |
| } |
| |
| namespace { |
| class ObjCMigrator : public RecursiveASTVisitor<ObjCMigrator> { |
| ObjCMigrateASTConsumer &Consumer; |
| ParentMap &PMap; |
| |
| public: |
| ObjCMigrator(ObjCMigrateASTConsumer &consumer, ParentMap &PMap) |
| : Consumer(consumer), PMap(PMap) { } |
| |
| bool shouldVisitTemplateInstantiations() const { return false; } |
| bool shouldWalkTypesOfTypeLocs() const { return false; } |
| |
| bool VisitObjCMessageExpr(ObjCMessageExpr *E) { |
| if (Consumer.MigrateLiterals) { |
| edit::Commit commit(*Consumer.Editor); |
| edit::rewriteToObjCLiteralSyntax(E, *Consumer.NSAPIObj, commit, &PMap); |
| Consumer.Editor->commit(commit); |
| } |
| |
| if (Consumer.MigrateSubscripting) { |
| edit::Commit commit(*Consumer.Editor); |
| edit::rewriteToObjCSubscriptSyntax(E, *Consumer.NSAPIObj, commit); |
| Consumer.Editor->commit(commit); |
| } |
| |
| return true; |
| } |
| |
| bool TraverseObjCMessageExpr(ObjCMessageExpr *E) { |
| // Do depth first; we want to rewrite the subexpressions first so that if |
| // we have to move expressions we will move them already rewritten. |
| for (Stmt::child_range range = E->children(); range; ++range) |
| if (!TraverseStmt(*range)) |
| return false; |
| |
| return WalkUpFromObjCMessageExpr(E); |
| } |
| }; |
| |
| class BodyMigrator : public RecursiveASTVisitor<BodyMigrator> { |
| ObjCMigrateASTConsumer &Consumer; |
| OwningPtr<ParentMap> PMap; |
| |
| public: |
| BodyMigrator(ObjCMigrateASTConsumer &consumer) : Consumer(consumer) { } |
| |
| bool shouldVisitTemplateInstantiations() const { return false; } |
| bool shouldWalkTypesOfTypeLocs() const { return false; } |
| |
| bool TraverseStmt(Stmt *S) { |
| PMap.reset(new ParentMap(S)); |
| ObjCMigrator(Consumer, *PMap).TraverseStmt(S); |
| return true; |
| } |
| }; |
| } |
| |
| void ObjCMigrateASTConsumer::migrateDecl(Decl *D) { |
| if (!D) |
| return; |
| if (isa<ObjCMethodDecl>(D)) |
| return; // Wait for the ObjC container declaration. |
| |
| BodyMigrator(*this).TraverseDecl(D); |
| } |
| |
| static void append_attr(std::string &PropertyString, const char *attr) { |
| PropertyString += ", "; |
| PropertyString += attr; |
| } |
| |
| static bool rewriteToObjCProperty(const ObjCMethodDecl *Getter, |
| const ObjCMethodDecl *Setter, |
| const NSAPI &NS, edit::Commit &commit, |
| bool GetterHasIsPrefix) { |
| ASTContext &Context = NS.getASTContext(); |
| std::string PropertyString = "@property(nonatomic"; |
| std::string PropertyNameString = Getter->getNameAsString(); |
| StringRef PropertyName(PropertyNameString); |
| if (GetterHasIsPrefix) { |
| PropertyString += ", getter="; |
| PropertyString += PropertyNameString; |
| } |
| // Property with no setter may be suggested as a 'readonly' property. |
| if (!Setter) |
| append_attr(PropertyString, "readonly"); |
| |
| // Short circuit properties that contain the name "delegate" or "dataSource", |
| // or have exact name "target" to have unsafe_unretained attribute. |
| if (PropertyName.equals("target") || |
| (PropertyName.find("delegate") != StringRef::npos) || |
| (PropertyName.find("dataSource") != StringRef::npos)) |
| append_attr(PropertyString, "unsafe_unretained"); |
| else if (Setter) { |
| const ParmVarDecl *argDecl = *Setter->param_begin(); |
| QualType ArgType = Context.getCanonicalType(argDecl->getType()); |
| Qualifiers::ObjCLifetime propertyLifetime = ArgType.getObjCLifetime(); |
| bool RetainableObject = ArgType->isObjCRetainableType(); |
| if (RetainableObject && propertyLifetime == Qualifiers::OCL_Strong) { |
| if (const ObjCObjectPointerType *ObjPtrTy = |
| ArgType->getAs<ObjCObjectPointerType>()) { |
| ObjCInterfaceDecl *IDecl = ObjPtrTy->getObjectType()->getInterface(); |
| if (IDecl && |
| IDecl->lookupNestedProtocol(&Context.Idents.get("NSCopying"))) |
| append_attr(PropertyString, "copy"); |
| else |
| append_attr(PropertyString, "retain"); |
| } |
| } else if (propertyLifetime == Qualifiers::OCL_Weak) |
| // TODO. More precise determination of 'weak' attribute requires |
| // looking into setter's implementation for backing weak ivar. |
| append_attr(PropertyString, "weak"); |
| else if (RetainableObject) |
| append_attr(PropertyString, "retain"); |
| } |
| PropertyString += ')'; |
| |
| QualType RT = Getter->getResultType(); |
| if (!isa<TypedefType>(RT)) { |
| // strip off any ARC lifetime qualifier. |
| QualType CanResultTy = Context.getCanonicalType(RT); |
| if (CanResultTy.getQualifiers().hasObjCLifetime()) { |
| Qualifiers Qs = CanResultTy.getQualifiers(); |
| Qs.removeObjCLifetime(); |
| RT = Context.getQualifiedType(CanResultTy.getUnqualifiedType(), Qs); |
| } |
| } |
| PropertyString += " "; |
| PropertyString += RT.getAsString(Context.getPrintingPolicy()); |
| PropertyString += " "; |
| if (GetterHasIsPrefix) { |
| // property name must strip off "is" and lower case the first character |
| // after that; e.g. isContinuous will become continuous. |
| StringRef PropertyNameStringRef(PropertyNameString); |
| PropertyNameStringRef = PropertyNameStringRef.drop_front(2); |
| PropertyNameString = PropertyNameStringRef; |
| std::string NewPropertyNameString = PropertyNameString; |
| NewPropertyNameString[0] = toLowercase(NewPropertyNameString[0]); |
| PropertyString += NewPropertyNameString; |
| } |
| else |
| PropertyString += PropertyNameString; |
| commit.replace(CharSourceRange::getCharRange(Getter->getLocStart(), |
| Getter->getDeclaratorEndLoc()), |
| PropertyString); |
| if (Setter) { |
| SourceLocation EndLoc = Setter->getDeclaratorEndLoc(); |
| // Get location past ';' |
| EndLoc = EndLoc.getLocWithOffset(1); |
| commit.remove(CharSourceRange::getCharRange(Setter->getLocStart(), EndLoc)); |
| } |
| return true; |
| } |
| |
| void ObjCMigrateASTConsumer::migrateObjCInterfaceDecl(ASTContext &Ctx, |
| ObjCInterfaceDecl *D) { |
| for (ObjCContainerDecl::method_iterator M = D->meth_begin(), MEnd = D->meth_end(); |
| M != MEnd; ++M) { |
| ObjCMethodDecl *Method = (*M); |
| if (Method->isPropertyAccessor() || !Method->isInstanceMethod() || |
| Method->param_size() != 0) |
| continue; |
| // Is this method candidate to be a getter? |
| QualType GRT = Method->getResultType(); |
| if (GRT->isVoidType()) |
| continue; |
| // FIXME. Don't know what todo with attributes, skip for now. |
| if (Method->hasAttrs()) |
| continue; |
| |
| Selector GetterSelector = Method->getSelector(); |
| IdentifierInfo *getterName = GetterSelector.getIdentifierInfoForSlot(0); |
| Selector SetterSelector = |
| SelectorTable::constructSetterSelector(PP.getIdentifierTable(), |
| PP.getSelectorTable(), |
| getterName); |
| ObjCMethodDecl *SetterMethod = D->lookupMethod(SetterSelector, true); |
| bool GetterHasIsPrefix = false; |
| if (!SetterMethod) { |
| // try a different naming convention for getter: isXxxxx |
| StringRef getterNameString = getterName->getName(); |
| if (getterNameString.startswith("is") && !GRT->isObjCRetainableType()) { |
| GetterHasIsPrefix = true; |
| const char *CGetterName = getterNameString.data() + 2; |
| if (CGetterName[0] && isUppercase(CGetterName[0])) { |
| getterName = &Ctx.Idents.get(CGetterName); |
| SetterSelector = |
| SelectorTable::constructSetterSelector(PP.getIdentifierTable(), |
| PP.getSelectorTable(), |
| getterName); |
| SetterMethod = D->lookupMethod(SetterSelector, true); |
| } |
| } |
| } |
| if (SetterMethod) { |
| // Is this a valid setter, matching the target getter? |
| QualType SRT = SetterMethod->getResultType(); |
| if (!SRT->isVoidType()) |
| continue; |
| const ParmVarDecl *argDecl = *SetterMethod->param_begin(); |
| QualType ArgType = argDecl->getType(); |
| if (!Ctx.hasSameUnqualifiedType(ArgType, GRT) || |
| SetterMethod->hasAttrs()) |
| continue; |
| edit::Commit commit(*Editor); |
| rewriteToObjCProperty(Method, SetterMethod, *NSAPIObj, commit, |
| GetterHasIsPrefix); |
| Editor->commit(commit); |
| } |
| else if (MigrateReadonlyProperty) { |
| // Try a non-void method with no argument (and no setter or property of same name |
| // as a 'readonly' property. |
| edit::Commit commit(*Editor); |
| rewriteToObjCProperty(Method, 0 /*SetterMethod*/, *NSAPIObj, commit, |
| false /*GetterHasIsPrefix*/); |
| Editor->commit(commit); |
| } |
| } |
| } |
| |
| static bool |
| ClassImplementsAllMethodsAndProperties(ASTContext &Ctx, |
| const ObjCImplementationDecl *ImpDecl, |
| const ObjCInterfaceDecl *IDecl, |
| ObjCProtocolDecl *Protocol) { |
| // In auto-synthesis, protocol properties are not synthesized. So, |
| // a conforming protocol must have its required properties declared |
| // in class interface. |
| bool HasAtleastOneRequiredProperty = false; |
| if (const ObjCProtocolDecl *PDecl = Protocol->getDefinition()) |
| for (ObjCProtocolDecl::prop_iterator P = PDecl->prop_begin(), |
| E = PDecl->prop_end(); P != E; ++P) { |
| ObjCPropertyDecl *Property = *P; |
| if (Property->getPropertyImplementation() == ObjCPropertyDecl::Optional) |
| continue; |
| HasAtleastOneRequiredProperty = true; |
| DeclContext::lookup_const_result R = IDecl->lookup(Property->getDeclName()); |
| if (R.size() == 0) { |
| // Relax the rule and look into class's implementation for a synthesize |
| // or dynamic declaration. Class is implementing a property coming from |
| // another protocol. This still makes the target protocol as conforming. |
| if (!ImpDecl->FindPropertyImplDecl( |
| Property->getDeclName().getAsIdentifierInfo())) |
| return false; |
| } |
| else if (ObjCPropertyDecl *ClassProperty = dyn_cast<ObjCPropertyDecl>(R[0])) { |
| if ((ClassProperty->getPropertyAttributes() |
| != Property->getPropertyAttributes()) || |
| !Ctx.hasSameType(ClassProperty->getType(), Property->getType())) |
| return false; |
| } |
| else |
| return false; |
| } |
| |
| // At this point, all required properties in this protocol conform to those |
| // declared in the class. |
| // Check that class implements the required methods of the protocol too. |
| bool HasAtleastOneRequiredMethod = false; |
| if (const ObjCProtocolDecl *PDecl = Protocol->getDefinition()) { |
| if (PDecl->meth_begin() == PDecl->meth_end()) |
| return HasAtleastOneRequiredProperty; |
| for (ObjCContainerDecl::method_iterator M = PDecl->meth_begin(), |
| MEnd = PDecl->meth_end(); M != MEnd; ++M) { |
| ObjCMethodDecl *MD = (*M); |
| if (MD->isImplicit()) |
| continue; |
| if (MD->getImplementationControl() == ObjCMethodDecl::Optional) |
| continue; |
| DeclContext::lookup_const_result R = ImpDecl->lookup(MD->getDeclName()); |
| if (R.size() == 0) |
| return false; |
| bool match = false; |
| HasAtleastOneRequiredMethod = true; |
| for (unsigned I = 0, N = R.size(); I != N; ++I) |
| if (ObjCMethodDecl *ImpMD = dyn_cast<ObjCMethodDecl>(R[0])) |
| if (Ctx.ObjCMethodsAreEqual(MD, ImpMD)) { |
| match = true; |
| break; |
| } |
| if (!match) |
| return false; |
| } |
| } |
| if (HasAtleastOneRequiredProperty || HasAtleastOneRequiredMethod) |
| return true; |
| return false; |
| } |
| |
| static bool rewriteToObjCInterfaceDecl(const ObjCInterfaceDecl *IDecl, |
| llvm::SmallVectorImpl<ObjCProtocolDecl*> &ConformingProtocols, |
| const NSAPI &NS, edit::Commit &commit) { |
| const ObjCList<ObjCProtocolDecl> &Protocols = IDecl->getReferencedProtocols(); |
| std::string ClassString; |
| SourceLocation EndLoc = |
| IDecl->getSuperClass() ? IDecl->getSuperClassLoc() : IDecl->getLocation(); |
| |
| if (Protocols.empty()) { |
| ClassString = '<'; |
| for (unsigned i = 0, e = ConformingProtocols.size(); i != e; i++) { |
| ClassString += ConformingProtocols[i]->getNameAsString(); |
| if (i != (e-1)) |
| ClassString += ", "; |
| } |
| ClassString += "> "; |
| } |
| else { |
| ClassString = ", "; |
| for (unsigned i = 0, e = ConformingProtocols.size(); i != e; i++) { |
| ClassString += ConformingProtocols[i]->getNameAsString(); |
| if (i != (e-1)) |
| ClassString += ", "; |
| } |
| ObjCInterfaceDecl::protocol_loc_iterator PL = IDecl->protocol_loc_end() - 1; |
| EndLoc = *PL; |
| } |
| |
| commit.insertAfterToken(EndLoc, ClassString); |
| return true; |
| } |
| |
| static bool rewriteToNSEnumDecl(const EnumDecl *EnumDcl, |
| const TypedefDecl *TypedefDcl, |
| const NSAPI &NS, edit::Commit &commit, |
| bool IsNSIntegerType) { |
| std::string ClassString = |
| IsNSIntegerType ? "typedef NS_ENUM(NSInteger, " : "typedef NS_OPTIONS(NSUInteger, "; |
| ClassString += TypedefDcl->getIdentifier()->getName(); |
| ClassString += ')'; |
| SourceRange R(EnumDcl->getLocStart(), EnumDcl->getLocStart()); |
| commit.replace(R, ClassString); |
| SourceLocation EndOfTypedefLoc = TypedefDcl->getLocEnd(); |
| EndOfTypedefLoc = trans::findLocationAfterSemi(EndOfTypedefLoc, NS.getASTContext()); |
| if (!EndOfTypedefLoc.isInvalid()) { |
| commit.remove(SourceRange(TypedefDcl->getLocStart(), EndOfTypedefLoc)); |
| return true; |
| } |
| return false; |
| } |
| |
| static bool rewriteToNSMacroDecl(const EnumDecl *EnumDcl, |
| const TypedefDecl *TypedefDcl, |
| const NSAPI &NS, edit::Commit &commit, |
| bool IsNSIntegerType) { |
| std::string ClassString = |
| IsNSIntegerType ? "NS_ENUM(NSInteger, " : "NS_OPTIONS(NSUInteger, "; |
| ClassString += TypedefDcl->getIdentifier()->getName(); |
| ClassString += ')'; |
| SourceRange R(EnumDcl->getLocStart(), EnumDcl->getLocStart()); |
| commit.replace(R, ClassString); |
| SourceLocation TypedefLoc = TypedefDcl->getLocEnd(); |
| commit.remove(SourceRange(TypedefLoc, TypedefLoc)); |
| return true; |
| } |
| |
| static bool UseNSOptionsMacro(Preprocessor &PP, ASTContext &Ctx, |
| const EnumDecl *EnumDcl) { |
| bool PowerOfTwo = true; |
| bool FoundHexdecimalEnumerator = false; |
| uint64_t MaxPowerOfTwoVal = 0; |
| for (EnumDecl::enumerator_iterator EI = EnumDcl->enumerator_begin(), |
| EE = EnumDcl->enumerator_end(); EI != EE; ++EI) { |
| EnumConstantDecl *Enumerator = (*EI); |
| const Expr *InitExpr = Enumerator->getInitExpr(); |
| if (!InitExpr) { |
| PowerOfTwo = false; |
| continue; |
| } |
| InitExpr = InitExpr->IgnoreImpCasts(); |
| if (const BinaryOperator *BO = dyn_cast<BinaryOperator>(InitExpr)) |
| if (BO->isShiftOp() || BO->isBitwiseOp()) |
| return true; |
| |
| uint64_t EnumVal = Enumerator->getInitVal().getZExtValue(); |
| if (PowerOfTwo && EnumVal) { |
| if (!llvm::isPowerOf2_64(EnumVal)) |
| PowerOfTwo = false; |
| else if (EnumVal > MaxPowerOfTwoVal) |
| MaxPowerOfTwoVal = EnumVal; |
| } |
| if (!FoundHexdecimalEnumerator) { |
| SourceLocation EndLoc = Enumerator->getLocEnd(); |
| Token Tok; |
| if (!PP.getRawToken(EndLoc, Tok, /*IgnoreWhiteSpace=*/true)) |
| if (Tok.isLiteral() && Tok.getLength() > 2) { |
| if (const char *StringLit = Tok.getLiteralData()) |
| FoundHexdecimalEnumerator = |
| (StringLit[0] == '0' && (toLowercase(StringLit[1]) == 'x')); |
| } |
| } |
| } |
| return FoundHexdecimalEnumerator || (PowerOfTwo && (MaxPowerOfTwoVal > 2)); |
| } |
| |
| void ObjCMigrateASTConsumer::migrateProtocolConformance(ASTContext &Ctx, |
| const ObjCImplementationDecl *ImpDecl) { |
| const ObjCInterfaceDecl *IDecl = ImpDecl->getClassInterface(); |
| if (!IDecl || ObjCProtocolDecls.empty()) |
| return; |
| // Find all implicit conforming protocols for this class |
| // and make them explicit. |
| llvm::SmallPtrSet<ObjCProtocolDecl *, 8> ExplicitProtocols; |
| Ctx.CollectInheritedProtocols(IDecl, ExplicitProtocols); |
| llvm::SmallVector<ObjCProtocolDecl *, 8> PotentialImplicitProtocols; |
| |
| for (llvm::SmallPtrSet<ObjCProtocolDecl*, 32>::iterator I = |
| ObjCProtocolDecls.begin(), |
| E = ObjCProtocolDecls.end(); I != E; ++I) |
| if (!ExplicitProtocols.count(*I)) |
| PotentialImplicitProtocols.push_back(*I); |
| |
| if (PotentialImplicitProtocols.empty()) |
| return; |
| |
| // go through list of non-optional methods and properties in each protocol |
| // in the PotentialImplicitProtocols list. If class implements every one of the |
| // methods and properties, then this class conforms to this protocol. |
| llvm::SmallVector<ObjCProtocolDecl*, 8> ConformingProtocols; |
| for (unsigned i = 0, e = PotentialImplicitProtocols.size(); i != e; i++) |
| if (ClassImplementsAllMethodsAndProperties(Ctx, ImpDecl, IDecl, |
| PotentialImplicitProtocols[i])) |
| ConformingProtocols.push_back(PotentialImplicitProtocols[i]); |
| |
| if (ConformingProtocols.empty()) |
| return; |
| |
| // Further reduce number of conforming protocols. If protocol P1 is in the list |
| // protocol P2 (P2<P1>), No need to include P1. |
| llvm::SmallVector<ObjCProtocolDecl*, 8> MinimalConformingProtocols; |
| for (unsigned i = 0, e = ConformingProtocols.size(); i != e; i++) { |
| bool DropIt = false; |
| ObjCProtocolDecl *TargetPDecl = ConformingProtocols[i]; |
| for (unsigned i1 = 0, e1 = ConformingProtocols.size(); i1 != e1; i1++) { |
| ObjCProtocolDecl *PDecl = ConformingProtocols[i1]; |
| if (PDecl == TargetPDecl) |
| continue; |
| if (PDecl->lookupProtocolNamed( |
| TargetPDecl->getDeclName().getAsIdentifierInfo())) { |
| DropIt = true; |
| break; |
| } |
| } |
| if (!DropIt) |
| MinimalConformingProtocols.push_back(TargetPDecl); |
| } |
| edit::Commit commit(*Editor); |
| rewriteToObjCInterfaceDecl(IDecl, MinimalConformingProtocols, |
| *NSAPIObj, commit); |
| Editor->commit(commit); |
| } |
| |
| void ObjCMigrateASTConsumer::migrateNSEnumDecl(ASTContext &Ctx, |
| const EnumDecl *EnumDcl, |
| const TypedefDecl *TypedefDcl) { |
| if (!EnumDcl->isCompleteDefinition() || EnumDcl->getIdentifier() || |
| !TypedefDcl->getIdentifier()) |
| return; |
| |
| QualType qt = TypedefDcl->getTypeSourceInfo()->getType(); |
| bool IsNSIntegerType = NSAPIObj->isObjCNSIntegerType(qt); |
| bool IsNSUIntegerType = !IsNSIntegerType && NSAPIObj->isObjCNSUIntegerType(qt); |
| |
| if (!IsNSIntegerType && !IsNSUIntegerType) { |
| // Also check for typedef enum {...} TD; |
| if (const EnumType *EnumTy = qt->getAs<EnumType>()) { |
| if (EnumTy->getDecl() == EnumDcl) { |
| bool NSOptions = UseNSOptionsMacro(PP, Ctx, EnumDcl); |
| if (NSOptions) { |
| if (!Ctx.Idents.get("NS_OPTIONS").hasMacroDefinition()) |
| return; |
| } |
| else if (!Ctx.Idents.get("NS_ENUM").hasMacroDefinition()) |
| return; |
| edit::Commit commit(*Editor); |
| rewriteToNSMacroDecl(EnumDcl, TypedefDcl, *NSAPIObj, commit, !NSOptions); |
| Editor->commit(commit); |
| } |
| } |
| return; |
| } |
| if (IsNSIntegerType && UseNSOptionsMacro(PP, Ctx, EnumDcl)) { |
| // We may still use NS_OPTIONS based on what we find in the enumertor list. |
| IsNSIntegerType = false; |
| IsNSUIntegerType = true; |
| } |
| |
| // NS_ENUM must be available. |
| if (IsNSIntegerType && !Ctx.Idents.get("NS_ENUM").hasMacroDefinition()) |
| return; |
| // NS_OPTIONS must be available. |
| if (IsNSUIntegerType && !Ctx.Idents.get("NS_OPTIONS").hasMacroDefinition()) |
| return; |
| edit::Commit commit(*Editor); |
| rewriteToNSEnumDecl(EnumDcl, TypedefDcl, *NSAPIObj, commit, IsNSIntegerType); |
| Editor->commit(commit); |
| } |
| |
| static void ReplaceWithInstancetype(const ObjCMigrateASTConsumer &ASTC, |
| ObjCMethodDecl *OM) { |
| SourceRange R; |
| std::string ClassString; |
| if (TypeSourceInfo *TSInfo = OM->getResultTypeSourceInfo()) { |
| TypeLoc TL = TSInfo->getTypeLoc(); |
| R = SourceRange(TL.getBeginLoc(), TL.getEndLoc()); |
| ClassString = "instancetype"; |
| } |
| else { |
| R = SourceRange(OM->getLocStart(), OM->getLocStart()); |
| ClassString = OM->isInstanceMethod() ? '-' : '+'; |
| ClassString += " (instancetype)"; |
| } |
| edit::Commit commit(*ASTC.Editor); |
| commit.replace(R, ClassString); |
| ASTC.Editor->commit(commit); |
| } |
| |
| void ObjCMigrateASTConsumer::migrateMethodInstanceType(ASTContext &Ctx, |
| ObjCContainerDecl *CDecl, |
| ObjCMethodDecl *OM) { |
| // bail out early and do not suggest 'instancetype' when the method already |
| // has a related result type, |
| if (OM->hasRelatedResultType()) |
| return; |
| |
| ObjCInstanceTypeFamily OIT_Family = |
| Selector::getInstTypeMethodFamily(OM->getSelector()); |
| |
| std::string ClassName; |
| switch (OIT_Family) { |
| case OIT_None: |
| migrateFactoryMethod(Ctx, CDecl, OM); |
| return; |
| case OIT_Array: |
| ClassName = "NSArray"; |
| break; |
| case OIT_Dictionary: |
| ClassName = "NSDictionary"; |
| break; |
| case OIT_Singleton: |
| migrateFactoryMethod(Ctx, CDecl, OM, OIT_Singleton); |
| return; |
| } |
| if (!OM->getResultType()->isObjCIdType()) |
| return; |
| |
| ObjCInterfaceDecl *IDecl = dyn_cast<ObjCInterfaceDecl>(CDecl); |
| if (!IDecl) { |
| if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CDecl)) |
| IDecl = CatDecl->getClassInterface(); |
| else if (ObjCImplDecl *ImpDecl = dyn_cast<ObjCImplDecl>(CDecl)) |
| IDecl = ImpDecl->getClassInterface(); |
| } |
| if (!IDecl || |
| !IDecl->lookupInheritedClass(&Ctx.Idents.get(ClassName))) { |
| migrateFactoryMethod(Ctx, CDecl, OM); |
| return; |
| } |
| ReplaceWithInstancetype(*this, OM); |
| } |
| |
| void ObjCMigrateASTConsumer::migrateInstanceType(ASTContext &Ctx, |
| ObjCContainerDecl *CDecl) { |
| // migrate methods which can have instancetype as their result type. |
| for (ObjCContainerDecl::method_iterator M = CDecl->meth_begin(), |
| MEnd = CDecl->meth_end(); |
| M != MEnd; ++M) { |
| ObjCMethodDecl *Method = (*M); |
| migrateMethodInstanceType(Ctx, CDecl, Method); |
| } |
| } |
| |
| void ObjCMigrateASTConsumer::migrateFactoryMethod(ASTContext &Ctx, |
| ObjCContainerDecl *CDecl, |
| ObjCMethodDecl *OM, |
| ObjCInstanceTypeFamily OIT_Family) { |
| if (OM->isInstanceMethod() || |
| OM->getResultType() == Ctx.getObjCInstanceType() || |
| !OM->getResultType()->isObjCIdType()) |
| return; |
| |
| // Candidate factory methods are + (id) NaMeXXX : ... which belong to a class |
| // NSYYYNamE with matching names be at least 3 characters long. |
| ObjCInterfaceDecl *IDecl = dyn_cast<ObjCInterfaceDecl>(CDecl); |
| if (!IDecl) { |
| if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CDecl)) |
| IDecl = CatDecl->getClassInterface(); |
| else if (ObjCImplDecl *ImpDecl = dyn_cast<ObjCImplDecl>(CDecl)) |
| IDecl = ImpDecl->getClassInterface(); |
| } |
| if (!IDecl) |
| return; |
| |
| std::string StringClassName = IDecl->getName(); |
| StringRef LoweredClassName(StringClassName); |
| std::string StringLoweredClassName = LoweredClassName.lower(); |
| LoweredClassName = StringLoweredClassName; |
| |
| IdentifierInfo *MethodIdName = OM->getSelector().getIdentifierInfoForSlot(0); |
| // Handle method with no name at its first selector slot; e.g. + (id):(int)x. |
| if (!MethodIdName) |
| return; |
| |
| std::string MethodName = MethodIdName->getName(); |
| if (OIT_Family == OIT_Singleton) { |
| StringRef STRefMethodName(MethodName); |
| size_t len = 0; |
| if (STRefMethodName.startswith("standard")) |
| len = strlen("standard"); |
| else if (STRefMethodName.startswith("shared")) |
| len = strlen("shared"); |
| else if (STRefMethodName.startswith("default")) |
| len = strlen("default"); |
| else |
| return; |
| MethodName = STRefMethodName.substr(len); |
| } |
| std::string MethodNameSubStr = MethodName.substr(0, 3); |
| StringRef MethodNamePrefix(MethodNameSubStr); |
| std::string StringLoweredMethodNamePrefix = MethodNamePrefix.lower(); |
| MethodNamePrefix = StringLoweredMethodNamePrefix; |
| size_t Ix = LoweredClassName.rfind(MethodNamePrefix); |
| if (Ix == StringRef::npos) |
| return; |
| std::string ClassNamePostfix = LoweredClassName.substr(Ix); |
| StringRef LoweredMethodName(MethodName); |
| std::string StringLoweredMethodName = LoweredMethodName.lower(); |
| LoweredMethodName = StringLoweredMethodName; |
| if (!LoweredMethodName.startswith(ClassNamePostfix)) |
| return; |
| ReplaceWithInstancetype(*this, OM); |
| } |
| |
| static bool IsVoidStarType(QualType Ty) { |
| if (!Ty->isPointerType()) |
| return false; |
| |
| while (const TypedefType *TD = dyn_cast<TypedefType>(Ty.getTypePtr())) |
| Ty = TD->getDecl()->getUnderlyingType(); |
| |
| // Is the type void*? |
| const PointerType* PT = Ty->getAs<PointerType>(); |
| if (PT->getPointeeType().getUnqualifiedType()->isVoidType()) |
| return true; |
| return IsVoidStarType(PT->getPointeeType()); |
| } |
| |
| /// AuditedType - This routine audits the type AT and returns false if it is one of known |
| /// CF object types or of the "void *" variety. It returns true if we don't care about the type |
| /// such as a non-pointer or pointers which have no ownership issues (such as "int *"). |
| static bool AuditedType (QualType AT) { |
| if (!AT->isAnyPointerType() && !AT->isBlockPointerType()) |
| return true; |
| // FIXME. There isn't much we can say about CF pointer type; or is there? |
| if (ento::coreFoundation::isCFObjectRef(AT) || |
| IsVoidStarType(AT) || |
| // If an ObjC object is type, assuming that it is not a CF function and |
| // that it is an un-audited function. |
| AT->isObjCObjectPointerType() || AT->isObjCBuiltinType()) |
| return false; |
| // All other pointers are assumed audited as harmless. |
| return true; |
| } |
| |
| void ObjCMigrateASTConsumer::AnnotateImplicitBridging(ASTContext &Ctx) { |
| if (CFFunctionIBCandidates.empty()) |
| return; |
| if (!Ctx.Idents.get("CF_IMPLICIT_BRIDGING_ENABLED").hasMacroDefinition()) { |
| CFFunctionIBCandidates.clear(); |
| FileId = 0; |
| return; |
| } |
| // Insert CF_IMPLICIT_BRIDGING_ENABLE/CF_IMPLICIT_BRIDGING_DISABLED |
| const Decl *FirstFD = CFFunctionIBCandidates[0]; |
| const Decl *LastFD = |
| CFFunctionIBCandidates[CFFunctionIBCandidates.size()-1]; |
| const char *PragmaString = "\nCF_IMPLICIT_BRIDGING_ENABLED\n\n"; |
| edit::Commit commit(*Editor); |
| commit.insertBefore(FirstFD->getLocStart(), PragmaString); |
| PragmaString = "\n\nCF_IMPLICIT_BRIDGING_DISABLED\n"; |
| SourceLocation EndLoc = LastFD->getLocEnd(); |
| // get location just past end of function location. |
| EndLoc = PP.getLocForEndOfToken(EndLoc); |
| if (isa<FunctionDecl>(LastFD)) { |
| // For Methods, EndLoc points to the ending semcolon. So, |
| // not of these extra work is needed. |
| Token Tok; |
| // get locaiton of token that comes after end of function. |
| bool Failed = PP.getRawToken(EndLoc, Tok, /*IgnoreWhiteSpace=*/true); |
| if (!Failed) |
| EndLoc = Tok.getLocation(); |
| } |
| commit.insertAfterToken(EndLoc, PragmaString); |
| Editor->commit(commit); |
| FileId = 0; |
| CFFunctionIBCandidates.clear(); |
| } |
| |
| void ObjCMigrateASTConsumer::migrateCFAnnotation(ASTContext &Ctx, const Decl *Decl) { |
| if (Decl->hasAttr<CFAuditedTransferAttr>()) { |
| assert(CFFunctionIBCandidates.empty() && |
| "Cannot have audited functions/methods inside user " |
| "provided CF_IMPLICIT_BRIDGING_ENABLE"); |
| return; |
| } |
| |
| // Finction must be annotated first. |
| CF_BRIDGING_KIND AuditKind; |
| if (const FunctionDecl *FuncDecl = dyn_cast<FunctionDecl>(Decl)) |
| AuditKind = migrateAddFunctionAnnotation(Ctx, FuncDecl); |
| else |
| AuditKind = migrateAddMethodAnnotation(Ctx, cast<ObjCMethodDecl>(Decl)); |
| if (AuditKind == CF_BRIDGING_ENABLE) { |
| CFFunctionIBCandidates.push_back(Decl); |
| if (!FileId) |
| FileId = PP.getSourceManager().getFileID(Decl->getLocation()).getHashValue(); |
| } |
| else if (AuditKind == CF_BRIDGING_MAY_INCLUDE) { |
| if (!CFFunctionIBCandidates.empty()) { |
| CFFunctionIBCandidates.push_back(Decl); |
| if (!FileId) |
| FileId = PP.getSourceManager().getFileID(Decl->getLocation()).getHashValue(); |
| } |
| } |
| else |
| AnnotateImplicitBridging(Ctx); |
| } |
| |
| void ObjCMigrateASTConsumer::AddCFAnnotations(ASTContext &Ctx, |
| const CallEffects &CE, |
| const FunctionDecl *FuncDecl, |
| bool ResultAnnotated) { |
| // Annotate function. |
| if (!ResultAnnotated) { |
| RetEffect Ret = CE.getReturnValue(); |
| const char *AnnotationString = 0; |
| if (Ret.getObjKind() == RetEffect::CF && Ret.isOwned()) { |
| if (Ctx.Idents.get("CF_RETURNS_RETAINED").hasMacroDefinition()) |
| AnnotationString = " CF_RETURNS_RETAINED"; |
| } |
| else if (Ret.getObjKind() == RetEffect::CF && !Ret.isOwned()) { |
| if (Ctx.Idents.get("CF_RETURNS_NOT_RETAINED").hasMacroDefinition()) |
| AnnotationString = " CF_RETURNS_NOT_RETAINED"; |
| } |
| if (AnnotationString) { |
| edit::Commit commit(*Editor); |
| commit.insertAfterToken(FuncDecl->getLocEnd(), AnnotationString); |
| Editor->commit(commit); |
| } |
| } |
| llvm::ArrayRef<ArgEffect> AEArgs = CE.getArgs(); |
| unsigned i = 0; |
| for (FunctionDecl::param_const_iterator pi = FuncDecl->param_begin(), |
| pe = FuncDecl->param_end(); pi != pe; ++pi, ++i) { |
| const ParmVarDecl *pd = *pi; |
| ArgEffect AE = AEArgs[i]; |
| if (AE == DecRef && !pd->getAttr<CFConsumedAttr>() && |
| Ctx.Idents.get("CF_CONSUMED").hasMacroDefinition()) { |
| edit::Commit commit(*Editor); |
| commit.insertBefore(pd->getLocation(), "CF_CONSUMED "); |
| Editor->commit(commit); |
| } |
| } |
| } |
| |
| |
| ObjCMigrateASTConsumer::CF_BRIDGING_KIND |
| ObjCMigrateASTConsumer::migrateAddFunctionAnnotation( |
| ASTContext &Ctx, |
| const FunctionDecl *FuncDecl) { |
| if (FuncDecl->hasBody()) |
| return CF_BRIDGING_NONE; |
| |
| CallEffects CE = CallEffects::getEffect(FuncDecl); |
| bool FuncIsReturnAnnotated = (FuncDecl->getAttr<CFReturnsRetainedAttr>() || |
| FuncDecl->getAttr<CFReturnsNotRetainedAttr>()); |
| |
| // Trivial case of when funciton is annotated and has no argument. |
| if (FuncIsReturnAnnotated && FuncDecl->getNumParams() == 0) |
| return CF_BRIDGING_NONE; |
| |
| bool ReturnCFAudited = false; |
| if (!FuncIsReturnAnnotated) { |
| RetEffect Ret = CE.getReturnValue(); |
| if (Ret.getObjKind() == RetEffect::CF && |
| (Ret.isOwned() || !Ret.isOwned())) |
| ReturnCFAudited = true; |
| else if (!AuditedType(FuncDecl->getResultType())) |
| return CF_BRIDGING_NONE; |
| } |
| |
| // At this point result type is audited for potential inclusion. |
| // Now, how about argument types. |
| llvm::ArrayRef<ArgEffect> AEArgs = CE.getArgs(); |
| unsigned i = 0; |
| bool ArgCFAudited = false; |
| for (FunctionDecl::param_const_iterator pi = FuncDecl->param_begin(), |
| pe = FuncDecl->param_end(); pi != pe; ++pi, ++i) { |
| const ParmVarDecl *pd = *pi; |
| ArgEffect AE = AEArgs[i]; |
| if (AE == DecRef /*CFConsumed annotated*/ || AE == IncRef) { |
| if (AE == DecRef && !pd->getAttr<CFConsumedAttr>()) |
| ArgCFAudited = true; |
| else if (AE == IncRef) |
| ArgCFAudited = true; |
| } |
| else { |
| QualType AT = pd->getType(); |
| if (!AuditedType(AT)) { |
| AddCFAnnotations(Ctx, CE, FuncDecl, FuncIsReturnAnnotated); |
| return CF_BRIDGING_NONE; |
| } |
| } |
| } |
| if (ReturnCFAudited || ArgCFAudited) |
| return CF_BRIDGING_ENABLE; |
| |
| return CF_BRIDGING_MAY_INCLUDE; |
| } |
| |
| void ObjCMigrateASTConsumer::migrateARCSafeAnnotation(ASTContext &Ctx, |
| ObjCContainerDecl *CDecl) { |
| if (!isa<ObjCInterfaceDecl>(CDecl)) |
| return; |
| |
| // migrate methods which can have instancetype as their result type. |
| for (ObjCContainerDecl::method_iterator M = CDecl->meth_begin(), |
| MEnd = CDecl->meth_end(); |
| M != MEnd; ++M) { |
| ObjCMethodDecl *Method = (*M); |
| migrateCFAnnotation(Ctx, Method); |
| } |
| } |
| |
| void ObjCMigrateASTConsumer::AddCFAnnotations(ASTContext &Ctx, |
| const CallEffects &CE, |
| const ObjCMethodDecl *MethodDecl, |
| bool ResultAnnotated) { |
| // Annotate function. |
| if (!ResultAnnotated) { |
| RetEffect Ret = CE.getReturnValue(); |
| const char *AnnotationString = 0; |
| if (Ret.getObjKind() == RetEffect::CF && Ret.isOwned()) { |
| if (Ctx.Idents.get("CF_RETURNS_RETAINED").hasMacroDefinition()) |
| AnnotationString = " CF_RETURNS_RETAINED"; |
| } |
| else if (Ret.getObjKind() == RetEffect::CF && !Ret.isOwned()) { |
| if (Ctx.Idents.get("CF_RETURNS_NOT_RETAINED").hasMacroDefinition()) |
| AnnotationString = " CF_RETURNS_NOT_RETAINED"; |
| } |
| if (AnnotationString) { |
| edit::Commit commit(*Editor); |
| commit.insertBefore(MethodDecl->getLocEnd(), AnnotationString); |
| Editor->commit(commit); |
| } |
| } |
| llvm::ArrayRef<ArgEffect> AEArgs = CE.getArgs(); |
| unsigned i = 0; |
| for (ObjCMethodDecl::param_const_iterator pi = MethodDecl->param_begin(), |
| pe = MethodDecl->param_end(); pi != pe; ++pi, ++i) { |
| const ParmVarDecl *pd = *pi; |
| ArgEffect AE = AEArgs[i]; |
| if (AE == DecRef && !pd->getAttr<CFConsumedAttr>() && |
| Ctx.Idents.get("CF_CONSUMED").hasMacroDefinition()) { |
| edit::Commit commit(*Editor); |
| commit.insertBefore(pd->getLocation(), "CF_CONSUMED "); |
| Editor->commit(commit); |
| } |
| } |
| } |
| |
| ObjCMigrateASTConsumer::CF_BRIDGING_KIND |
| ObjCMigrateASTConsumer::migrateAddMethodAnnotation( |
| ASTContext &Ctx, |
| const ObjCMethodDecl *MethodDecl) { |
| if (MethodDecl->hasBody()) |
| return CF_BRIDGING_NONE; |
| |
| CallEffects CE = CallEffects::getEffect(MethodDecl); |
| bool MethodIsReturnAnnotated = (MethodDecl->getAttr<CFReturnsRetainedAttr>() || |
| MethodDecl->getAttr<CFReturnsNotRetainedAttr>()); |
| |
| // Trivial case of when funciton is annotated and has no argument. |
| if (MethodIsReturnAnnotated && |
| (MethodDecl->param_begin() == MethodDecl->param_end())) |
| return CF_BRIDGING_NONE; |
| |
| bool ReturnCFAudited = false; |
| if (!MethodIsReturnAnnotated) { |
| RetEffect Ret = CE.getReturnValue(); |
| if (Ret.getObjKind() == RetEffect::CF && (Ret.isOwned() || !Ret.isOwned())) |
| ReturnCFAudited = true; |
| else if (!AuditedType(MethodDecl->getResultType())) |
| return CF_BRIDGING_NONE; |
| } |
| |
| // At this point result type is either annotated or audited. |
| // Now, how about argument types. |
| llvm::ArrayRef<ArgEffect> AEArgs = CE.getArgs(); |
| unsigned i = 0; |
| bool ArgCFAudited = false; |
| for (ObjCMethodDecl::param_const_iterator pi = MethodDecl->param_begin(), |
| pe = MethodDecl->param_end(); pi != pe; ++pi, ++i) { |
| const ParmVarDecl *pd = *pi; |
| ArgEffect AE = AEArgs[i]; |
| if (AE == DecRef /*CFConsumed annotated*/ || AE == IncRef) { |
| if (AE == DecRef && !pd->getAttr<CFConsumedAttr>()) |
| ArgCFAudited = true; |
| else if (AE == IncRef) |
| ArgCFAudited = true; |
| } |
| else { |
| QualType AT = pd->getType(); |
| if (!AuditedType(AT)) { |
| AddCFAnnotations(Ctx, CE, MethodDecl, MethodIsReturnAnnotated); |
| return CF_BRIDGING_NONE; |
| } |
| } |
| } |
| if (ReturnCFAudited || ArgCFAudited) |
| return CF_BRIDGING_ENABLE; |
| |
| return CF_BRIDGING_MAY_INCLUDE; |
| } |
| |
| namespace { |
| |
| class RewritesReceiver : public edit::EditsReceiver { |
| Rewriter &Rewrite; |
| |
| public: |
| RewritesReceiver(Rewriter &Rewrite) : Rewrite(Rewrite) { } |
| |
| virtual void insert(SourceLocation loc, StringRef text) { |
| Rewrite.InsertText(loc, text); |
| } |
| virtual void replace(CharSourceRange range, StringRef text) { |
| Rewrite.ReplaceText(range.getBegin(), Rewrite.getRangeSize(range), text); |
| } |
| }; |
| |
| } |
| |
| void ObjCMigrateASTConsumer::HandleTranslationUnit(ASTContext &Ctx) { |
| |
| TranslationUnitDecl *TU = Ctx.getTranslationUnitDecl(); |
| if (MigrateProperty) { |
| for (DeclContext::decl_iterator D = TU->decls_begin(), DEnd = TU->decls_end(); |
| D != DEnd; ++D) { |
| if (unsigned FID = |
| PP.getSourceManager().getFileID((*D)->getLocation()).getHashValue()) |
| if (FileId && FileId != FID) { |
| assert(!CFFunctionIBCandidates.empty()); |
| AnnotateImplicitBridging(Ctx); |
| } |
| |
| if (ObjCInterfaceDecl *CDecl = dyn_cast<ObjCInterfaceDecl>(*D)) |
| migrateObjCInterfaceDecl(Ctx, CDecl); |
| else if (ObjCProtocolDecl *PDecl = dyn_cast<ObjCProtocolDecl>(*D)) |
| ObjCProtocolDecls.insert(PDecl); |
| else if (const ObjCImplementationDecl *ImpDecl = |
| dyn_cast<ObjCImplementationDecl>(*D)) |
| migrateProtocolConformance(Ctx, ImpDecl); |
| else if (const EnumDecl *ED = dyn_cast<EnumDecl>(*D)) { |
| DeclContext::decl_iterator N = D; |
| ++N; |
| if (N != DEnd) |
| if (const TypedefDecl *TD = dyn_cast<TypedefDecl>(*N)) |
| migrateNSEnumDecl(Ctx, ED, TD); |
| } |
| else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*D)) |
| migrateCFAnnotation(Ctx, FD); |
| |
| if (ObjCContainerDecl *CDecl = dyn_cast<ObjCContainerDecl>(*D)) { |
| // migrate methods which can have instancetype as their result type. |
| migrateInstanceType(Ctx, CDecl); |
| // annotate methods with CF annotations. |
| migrateARCSafeAnnotation(Ctx, CDecl); |
| } |
| } |
| AnnotateImplicitBridging(Ctx); |
| } |
| |
| Rewriter rewriter(Ctx.getSourceManager(), Ctx.getLangOpts()); |
| RewritesReceiver Rec(rewriter); |
| Editor->applyRewrites(Rec); |
| |
| for (Rewriter::buffer_iterator |
| I = rewriter.buffer_begin(), E = rewriter.buffer_end(); I != E; ++I) { |
| FileID FID = I->first; |
| RewriteBuffer &buf = I->second; |
| const FileEntry *file = Ctx.getSourceManager().getFileEntryForID(FID); |
| assert(file); |
| SmallString<512> newText; |
| llvm::raw_svector_ostream vecOS(newText); |
| buf.write(vecOS); |
| vecOS.flush(); |
| llvm::MemoryBuffer *memBuf = llvm::MemoryBuffer::getMemBufferCopy( |
| StringRef(newText.data(), newText.size()), file->getName()); |
| SmallString<64> filePath(file->getName()); |
| FileMgr.FixupRelativePath(filePath); |
| Remapper.remap(filePath.str(), memBuf); |
| } |
| |
| if (IsOutputFile) { |
| Remapper.flushToFile(MigrateDir, Ctx.getDiagnostics()); |
| } else { |
| Remapper.flushToDisk(MigrateDir, Ctx.getDiagnostics()); |
| } |
| } |
| |
| bool MigrateSourceAction::BeginInvocation(CompilerInstance &CI) { |
| CI.getDiagnostics().setIgnoreAllWarnings(true); |
| return true; |
| } |
| |
| ASTConsumer *MigrateSourceAction::CreateASTConsumer(CompilerInstance &CI, |
| StringRef InFile) { |
| PPConditionalDirectiveRecord * |
| PPRec = new PPConditionalDirectiveRecord(CI.getSourceManager()); |
| CI.getPreprocessor().addPPCallbacks(PPRec); |
| return new ObjCMigrateASTConsumer(CI.getFrontendOpts().OutputFile, |
| /*MigrateLiterals=*/true, |
| /*MigrateSubscripting=*/true, |
| /*MigrateProperty*/true, |
| /*MigrateReadonlyProperty*/true, |
| Remapper, |
| CI.getFileManager(), |
| PPRec, |
| CI.getPreprocessor(), |
| /*isOutputFile=*/true); |
| } |