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-rw-r--r--contrib/llvm/tools/clang/lib/ARCMigrate/ObjCMT.cpp2290
1 files changed, 2290 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/ARCMigrate/ObjCMT.cpp b/contrib/llvm/tools/clang/lib/ARCMigrate/ObjCMT.cpp
new file mode 100644
index 0000000..a43879c
--- /dev/null
+++ b/contrib/llvm/tools/clang/lib/ARCMigrate/ObjCMT.cpp
@@ -0,0 +1,2290 @@
+//===--- 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/ARCMT.h"
+#include "clang/ARCMigrate/ARCMTActions.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Attr.h"
+#include "clang/AST/NSAPI.h"
+#include "clang/AST/ParentMap.h"
+#include "clang/AST/RecursiveASTVisitor.h"
+#include "clang/Analysis/DomainSpecific/CocoaConventions.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/StaticAnalyzer/Checkers/ObjCRetainCount.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringSet.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/YAMLParser.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 migrateObjCContainerDecl(ASTContext &Ctx, ObjCContainerDecl *D);
+ void migrateProtocolConformance(ASTContext &Ctx,
+ const ObjCImplementationDecl *ImpDecl);
+ void CacheObjCNSIntegerTypedefed(const TypedefDecl *TypedefDcl);
+ bool migrateNSEnumDecl(ASTContext &Ctx, const EnumDecl *EnumDcl,
+ const TypedefDecl *TypedefDcl);
+ void migrateAllMethodInstaceType(ASTContext &Ctx, ObjCContainerDecl *CDecl);
+ void migrateMethodInstanceType(ASTContext &Ctx, ObjCContainerDecl *CDecl,
+ ObjCMethodDecl *OM);
+ bool migrateProperty(ASTContext &Ctx, ObjCContainerDecl *D, ObjCMethodDecl *OM);
+ void migrateNsReturnsInnerPointer(ASTContext &Ctx, ObjCMethodDecl *OM);
+ void migratePropertyNsReturnsInnerPointer(ASTContext &Ctx, ObjCPropertyDecl *P);
+ 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);
+
+ void migrateAddMethodAnnotation(ASTContext &Ctx,
+ const ObjCMethodDecl *MethodDecl);
+
+ void inferDesignatedInitializers(ASTContext &Ctx,
+ const ObjCImplementationDecl *ImplD);
+
+ bool InsertFoundation(ASTContext &Ctx, SourceLocation Loc);
+
+public:
+ std::string MigrateDir;
+ unsigned ASTMigrateActions;
+ FileID FileId;
+ const TypedefDecl *NSIntegerTypedefed;
+ const TypedefDecl *NSUIntegerTypedefed;
+ std::unique_ptr<NSAPI> NSAPIObj;
+ std::unique_ptr<edit::EditedSource> Editor;
+ FileRemapper &Remapper;
+ FileManager &FileMgr;
+ const PPConditionalDirectiveRecord *PPRec;
+ Preprocessor &PP;
+ bool IsOutputFile;
+ bool FoundationIncluded;
+ llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ObjCProtocolDecls;
+ llvm::SmallVector<const Decl *, 8> CFFunctionIBCandidates;
+ llvm::StringSet<> WhiteListFilenames;
+
+ ObjCMigrateASTConsumer(StringRef migrateDir,
+ unsigned astMigrateActions,
+ FileRemapper &remapper,
+ FileManager &fileMgr,
+ const PPConditionalDirectiveRecord *PPRec,
+ Preprocessor &PP,
+ bool isOutputFile,
+ ArrayRef<std::string> WhiteList)
+ : MigrateDir(migrateDir),
+ ASTMigrateActions(astMigrateActions),
+ NSIntegerTypedefed(nullptr), NSUIntegerTypedefed(nullptr),
+ Remapper(remapper), FileMgr(fileMgr), PPRec(PPRec), PP(PP),
+ IsOutputFile(isOutputFile),
+ FoundationIncluded(false){
+
+ // FIXME: StringSet should have insert(iter, iter) to use here.
+ for (const std::string &Val : WhiteList)
+ WhiteListFilenames.insert(Val);
+ }
+
+protected:
+ void Initialize(ASTContext &Context) override {
+ NSAPIObj.reset(new NSAPI(Context));
+ Editor.reset(new edit::EditedSource(Context.getSourceManager(),
+ Context.getLangOpts(),
+ PPRec));
+ }
+
+ bool HandleTopLevelDecl(DeclGroupRef DG) override {
+ for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I)
+ migrateDecl(*I);
+ return true;
+ }
+ void HandleInterestingDecl(DeclGroupRef DG) override {
+ // Ignore decls from the PCH.
+ }
+ void HandleTopLevelDeclInObjCContainer(DeclGroupRef DG) override {
+ ObjCMigrateASTConsumer::HandleTopLevelDecl(DG);
+ }
+
+ void HandleTranslationUnit(ASTContext &Ctx) override;
+
+ bool canModifyFile(StringRef Path) {
+ if (WhiteListFilenames.empty())
+ return true;
+ return WhiteListFilenames.find(llvm::sys::path::filename(Path))
+ != WhiteListFilenames.end();
+ }
+ bool canModifyFile(const FileEntry *FE) {
+ if (!FE)
+ return false;
+ return canModifyFile(FE->getName());
+ }
+ bool canModifyFile(FileID FID) {
+ if (FID.isInvalid())
+ return false;
+ return canModifyFile(PP.getSourceManager().getFileEntryForID(FID));
+ }
+
+ bool canModify(const Decl *D) {
+ if (!D)
+ return false;
+ if (const ObjCCategoryImplDecl *CatImpl = dyn_cast<ObjCCategoryImplDecl>(D))
+ return canModify(CatImpl->getCategoryDecl());
+ if (const ObjCImplementationDecl *Impl = dyn_cast<ObjCImplementationDecl>(D))
+ return canModify(Impl->getClassInterface());
+ if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
+ return canModify(cast<Decl>(MD->getDeclContext()));
+
+ FileID FID = PP.getSourceManager().getFileID(D->getLocation());
+ return canModifyFile(FID);
+ }
+};
+
+}
+
+ObjCMigrateAction::ObjCMigrateAction(FrontendAction *WrappedAction,
+ StringRef migrateDir,
+ unsigned migrateAction)
+ : WrapperFrontendAction(WrappedAction), MigrateDir(migrateDir),
+ ObjCMigAction(migrateAction),
+ CompInst(nullptr) {
+ if (MigrateDir.empty())
+ MigrateDir = "."; // user current directory if none is given.
+}
+
+std::unique_ptr<ASTConsumer>
+ObjCMigrateAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
+ PPConditionalDirectiveRecord *
+ PPRec = new PPConditionalDirectiveRecord(CompInst->getSourceManager());
+ CI.getPreprocessor().addPPCallbacks(std::unique_ptr<PPCallbacks>(PPRec));
+ std::vector<std::unique_ptr<ASTConsumer>> Consumers;
+ Consumers.push_back(WrapperFrontendAction::CreateASTConsumer(CI, InFile));
+ Consumers.push_back(llvm::make_unique<ObjCMigrateASTConsumer>(
+ MigrateDir, ObjCMigAction, Remapper, CompInst->getFileManager(), PPRec,
+ CompInst->getPreprocessor(), false, None));
+ return llvm::make_unique<MultiplexConsumer>(std::move(Consumers));
+}
+
+bool ObjCMigrateAction::BeginInvocation(CompilerInstance &CI) {
+ Remapper.initFromDisk(MigrateDir, CI.getDiagnostics(),
+ /*ignoreIfFilesChanges=*/true);
+ CompInst = &CI;
+ CI.getDiagnostics().setIgnoreAllWarnings(true);
+ return true;
+}
+
+namespace {
+ // FIXME. This duplicates one in RewriteObjCFoundationAPI.cpp
+ bool subscriptOperatorNeedsParens(const Expr *FullExpr) {
+ const Expr* Expr = FullExpr->IgnoreImpCasts();
+ if (isa<ArraySubscriptExpr>(Expr) ||
+ isa<CallExpr>(Expr) ||
+ isa<DeclRefExpr>(Expr) ||
+ isa<CXXNamedCastExpr>(Expr) ||
+ isa<CXXConstructExpr>(Expr) ||
+ isa<CXXThisExpr>(Expr) ||
+ isa<CXXTypeidExpr>(Expr) ||
+ isa<CXXUnresolvedConstructExpr>(Expr) ||
+ isa<ObjCMessageExpr>(Expr) ||
+ isa<ObjCPropertyRefExpr>(Expr) ||
+ isa<ObjCProtocolExpr>(Expr) ||
+ isa<MemberExpr>(Expr) ||
+ isa<ObjCIvarRefExpr>(Expr) ||
+ isa<ParenExpr>(FullExpr) ||
+ isa<ParenListExpr>(Expr) ||
+ isa<SizeOfPackExpr>(Expr))
+ return false;
+
+ return true;
+ }
+
+ /// \brief - Rewrite message expression for Objective-C setter and getters into
+ /// property-dot syntax.
+ bool rewriteToPropertyDotSyntax(const ObjCMessageExpr *Msg,
+ Preprocessor &PP,
+ const NSAPI &NS, edit::Commit &commit,
+ const ParentMap *PMap) {
+ if (!Msg || Msg->isImplicit() ||
+ (Msg->getReceiverKind() != ObjCMessageExpr::Instance &&
+ Msg->getReceiverKind() != ObjCMessageExpr::SuperInstance))
+ return false;
+ if (const Expr *Receiver = Msg->getInstanceReceiver())
+ if (Receiver->getType()->isObjCBuiltinType())
+ return false;
+
+ const ObjCMethodDecl *Method = Msg->getMethodDecl();
+ if (!Method)
+ return false;
+ if (!Method->isPropertyAccessor())
+ return false;
+
+ const ObjCPropertyDecl *Prop = Method->findPropertyDecl();
+ if (!Prop)
+ return false;
+
+ SourceRange MsgRange = Msg->getSourceRange();
+ bool ReceiverIsSuper =
+ (Msg->getReceiverKind() == ObjCMessageExpr::SuperInstance);
+ // for 'super' receiver is nullptr.
+ const Expr *receiver = Msg->getInstanceReceiver();
+ bool NeedsParen =
+ ReceiverIsSuper ? false : subscriptOperatorNeedsParens(receiver);
+ bool IsGetter = (Msg->getNumArgs() == 0);
+ if (IsGetter) {
+ // Find space location range between receiver expression and getter method.
+ SourceLocation BegLoc =
+ ReceiverIsSuper ? Msg->getSuperLoc() : receiver->getLocEnd();
+ BegLoc = PP.getLocForEndOfToken(BegLoc);
+ SourceLocation EndLoc = Msg->getSelectorLoc(0);
+ SourceRange SpaceRange(BegLoc, EndLoc);
+ std::string PropertyDotString;
+ // rewrite getter method expression into: receiver.property or
+ // (receiver).property
+ if (NeedsParen) {
+ commit.insertBefore(receiver->getLocStart(), "(");
+ PropertyDotString = ").";
+ }
+ else
+ PropertyDotString = ".";
+ PropertyDotString += Prop->getName();
+ commit.replace(SpaceRange, PropertyDotString);
+
+ // remove '[' ']'
+ commit.replace(SourceRange(MsgRange.getBegin(), MsgRange.getBegin()), "");
+ commit.replace(SourceRange(MsgRange.getEnd(), MsgRange.getEnd()), "");
+ } else {
+ if (NeedsParen)
+ commit.insertWrap("(", receiver->getSourceRange(), ")");
+ std::string PropertyDotString = ".";
+ PropertyDotString += Prop->getName();
+ PropertyDotString += " =";
+ const Expr*const* Args = Msg->getArgs();
+ const Expr *RHS = Args[0];
+ if (!RHS)
+ return false;
+ SourceLocation BegLoc =
+ ReceiverIsSuper ? Msg->getSuperLoc() : receiver->getLocEnd();
+ BegLoc = PP.getLocForEndOfToken(BegLoc);
+ SourceLocation EndLoc = RHS->getLocStart();
+ EndLoc = EndLoc.getLocWithOffset(-1);
+ const char *colon = PP.getSourceManager().getCharacterData(EndLoc);
+ // Add a space after '=' if there is no space between RHS and '='
+ if (colon && colon[0] == ':')
+ PropertyDotString += " ";
+ SourceRange Range(BegLoc, EndLoc);
+ commit.replace(Range, PropertyDotString);
+ // remove '[' ']'
+ commit.replace(SourceRange(MsgRange.getBegin(), MsgRange.getBegin()), "");
+ commit.replace(SourceRange(MsgRange.getEnd(), MsgRange.getEnd()), "");
+ }
+ return true;
+ }
+
+
+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.ASTMigrateActions & FrontendOptions::ObjCMT_Literals) {
+ edit::Commit commit(*Consumer.Editor);
+ edit::rewriteToObjCLiteralSyntax(E, *Consumer.NSAPIObj, commit, &PMap);
+ Consumer.Editor->commit(commit);
+ }
+
+ if (Consumer.ASTMigrateActions & FrontendOptions::ObjCMT_Subscripting) {
+ edit::Commit commit(*Consumer.Editor);
+ edit::rewriteToObjCSubscriptSyntax(E, *Consumer.NSAPIObj, commit);
+ Consumer.Editor->commit(commit);
+ }
+
+ if (Consumer.ASTMigrateActions & FrontendOptions::ObjCMT_PropertyDotSyntax) {
+ edit::Commit commit(*Consumer.Editor);
+ rewriteToPropertyDotSyntax(E, Consumer.PP, *Consumer.NSAPIObj,
+ commit, &PMap);
+ 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;
+ std::unique_ptr<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,
+ bool &LParenAdded) {
+ if (!LParenAdded) {
+ PropertyString += "(";
+ LParenAdded = true;
+ }
+ else
+ PropertyString += ", ";
+ PropertyString += attr;
+}
+
+static
+void MigrateBlockOrFunctionPointerTypeVariable(std::string & PropertyString,
+ const std::string& TypeString,
+ const char *name) {
+ const char *argPtr = TypeString.c_str();
+ int paren = 0;
+ while (*argPtr) {
+ switch (*argPtr) {
+ case '(':
+ PropertyString += *argPtr;
+ paren++;
+ break;
+ case ')':
+ PropertyString += *argPtr;
+ paren--;
+ break;
+ case '^':
+ case '*':
+ PropertyString += (*argPtr);
+ if (paren == 1) {
+ PropertyString += name;
+ name = "";
+ }
+ break;
+ default:
+ PropertyString += *argPtr;
+ break;
+ }
+ argPtr++;
+ }
+}
+
+static const char *PropertyMemoryAttribute(ASTContext &Context, QualType ArgType) {
+ Qualifiers::ObjCLifetime propertyLifetime = ArgType.getObjCLifetime();
+ bool RetainableObject = ArgType->isObjCRetainableType();
+ if (RetainableObject &&
+ (propertyLifetime == Qualifiers::OCL_Strong
+ || propertyLifetime == Qualifiers::OCL_None)) {
+ if (const ObjCObjectPointerType *ObjPtrTy =
+ ArgType->getAs<ObjCObjectPointerType>()) {
+ ObjCInterfaceDecl *IDecl = ObjPtrTy->getObjectType()->getInterface();
+ if (IDecl &&
+ IDecl->lookupNestedProtocol(&Context.Idents.get("NSCopying")))
+ return "copy";
+ else
+ return "strong";
+ }
+ else if (ArgType->isBlockPointerType())
+ return "copy";
+ } else if (propertyLifetime == Qualifiers::OCL_Weak)
+ // TODO. More precise determination of 'weak' attribute requires
+ // looking into setter's implementation for backing weak ivar.
+ return "weak";
+ else if (RetainableObject)
+ return ArgType->isBlockPointerType() ? "copy" : "strong";
+ return nullptr;
+}
+
+static void rewriteToObjCProperty(const ObjCMethodDecl *Getter,
+ const ObjCMethodDecl *Setter,
+ const NSAPI &NS, edit::Commit &commit,
+ unsigned LengthOfPrefix,
+ bool Atomic, bool UseNsIosOnlyMacro,
+ bool AvailabilityArgsMatch) {
+ ASTContext &Context = NS.getASTContext();
+ bool LParenAdded = false;
+ std::string PropertyString = "@property ";
+ if (UseNsIosOnlyMacro && NS.isMacroDefined("NS_NONATOMIC_IOSONLY")) {
+ PropertyString += "(NS_NONATOMIC_IOSONLY";
+ LParenAdded = true;
+ } else if (!Atomic) {
+ PropertyString += "(nonatomic";
+ LParenAdded = true;
+ }
+
+ std::string PropertyNameString = Getter->getNameAsString();
+ StringRef PropertyName(PropertyNameString);
+ if (LengthOfPrefix > 0) {
+ if (!LParenAdded) {
+ PropertyString += "(getter=";
+ LParenAdded = true;
+ }
+ else
+ PropertyString += ", getter=";
+ PropertyString += PropertyNameString;
+ }
+ // Property with no setter may be suggested as a 'readonly' property.
+ if (!Setter)
+ append_attr(PropertyString, "readonly", LParenAdded);
+
+
+ // Short circuit 'delegate' properties that contain the name "delegate" or
+ // "dataSource", or have exact name "target" to have 'assign' attribute.
+ if (PropertyName.equals("target") ||
+ (PropertyName.find("delegate") != StringRef::npos) ||
+ (PropertyName.find("dataSource") != StringRef::npos)) {
+ QualType QT = Getter->getReturnType();
+ if (!QT->isRealType())
+ append_attr(PropertyString, "assign", LParenAdded);
+ } else if (!Setter) {
+ QualType ResType = Context.getCanonicalType(Getter->getReturnType());
+ if (const char *MemoryManagementAttr = PropertyMemoryAttribute(Context, ResType))
+ append_attr(PropertyString, MemoryManagementAttr, LParenAdded);
+ } else {
+ const ParmVarDecl *argDecl = *Setter->param_begin();
+ QualType ArgType = Context.getCanonicalType(argDecl->getType());
+ if (const char *MemoryManagementAttr = PropertyMemoryAttribute(Context, ArgType))
+ append_attr(PropertyString, MemoryManagementAttr, LParenAdded);
+ }
+ if (LParenAdded)
+ PropertyString += ')';
+ QualType RT = Getter->getReturnType();
+ 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 += " ";
+ PrintingPolicy SubPolicy(Context.getPrintingPolicy());
+ SubPolicy.SuppressStrongLifetime = true;
+ SubPolicy.SuppressLifetimeQualifiers = true;
+ std::string TypeString = RT.getAsString(SubPolicy);
+ if (LengthOfPrefix > 0) {
+ // 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(LengthOfPrefix);
+ PropertyNameString = PropertyNameStringRef;
+ bool NoLowering = (isUppercase(PropertyNameString[0]) &&
+ PropertyNameString.size() > 1 &&
+ isUppercase(PropertyNameString[1]));
+ if (!NoLowering)
+ PropertyNameString[0] = toLowercase(PropertyNameString[0]);
+ }
+ if (RT->isBlockPointerType() || RT->isFunctionPointerType())
+ MigrateBlockOrFunctionPointerTypeVariable(PropertyString,
+ TypeString,
+ PropertyNameString.c_str());
+ else {
+ char LastChar = TypeString[TypeString.size()-1];
+ PropertyString += TypeString;
+ if (LastChar != '*')
+ PropertyString += ' ';
+ PropertyString += PropertyNameString;
+ }
+ SourceLocation StartGetterSelectorLoc = Getter->getSelectorStartLoc();
+ Selector GetterSelector = Getter->getSelector();
+
+ SourceLocation EndGetterSelectorLoc =
+ StartGetterSelectorLoc.getLocWithOffset(GetterSelector.getNameForSlot(0).size());
+ commit.replace(CharSourceRange::getCharRange(Getter->getLocStart(),
+ EndGetterSelectorLoc),
+ PropertyString);
+ if (Setter && AvailabilityArgsMatch) {
+ SourceLocation EndLoc = Setter->getDeclaratorEndLoc();
+ // Get location past ';'
+ EndLoc = EndLoc.getLocWithOffset(1);
+ SourceLocation BeginOfSetterDclLoc = Setter->getLocStart();
+ // FIXME. This assumes that setter decl; is immediately preceded by eoln.
+ // It is trying to remove the setter method decl. line entirely.
+ BeginOfSetterDclLoc = BeginOfSetterDclLoc.getLocWithOffset(-1);
+ commit.remove(SourceRange(BeginOfSetterDclLoc, EndLoc));
+ }
+}
+
+static bool IsCategoryNameWithDeprecatedSuffix(ObjCContainerDecl *D) {
+ if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(D)) {
+ StringRef Name = CatDecl->getName();
+ return Name.endswith("Deprecated");
+ }
+ return false;
+}
+
+void ObjCMigrateASTConsumer::migrateObjCContainerDecl(ASTContext &Ctx,
+ ObjCContainerDecl *D) {
+ if (D->isDeprecated() || IsCategoryNameWithDeprecatedSuffix(D))
+ return;
+
+ for (auto *Method : D->methods()) {
+ if (Method->isDeprecated())
+ continue;
+ bool PropertyInferred = migrateProperty(Ctx, D, Method);
+ // If a property is inferred, do not attempt to attach NS_RETURNS_INNER_POINTER to
+ // the getter method as it ends up on the property itself which we don't want
+ // to do unless -objcmt-returns-innerpointer-property option is on.
+ if (!PropertyInferred ||
+ (ASTMigrateActions & FrontendOptions::ObjCMT_ReturnsInnerPointerProperty))
+ if (ASTMigrateActions & FrontendOptions::ObjCMT_Annotation)
+ migrateNsReturnsInnerPointer(Ctx, Method);
+ }
+ if (!(ASTMigrateActions & FrontendOptions::ObjCMT_ReturnsInnerPointerProperty))
+ return;
+
+ for (auto *Prop : D->properties()) {
+ if ((ASTMigrateActions & FrontendOptions::ObjCMT_Annotation) &&
+ !Prop->isDeprecated())
+ migratePropertyNsReturnsInnerPointer(Ctx, Prop);
+ }
+}
+
+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 (const auto *Property : PDecl->properties()) {
+ if (Property->getPropertyImplementation() == ObjCPropertyDecl::Optional)
+ continue;
+ HasAtleastOneRequiredProperty = true;
+ DeclContext::lookup_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 (const auto *MD : PDecl->methods()) {
+ if (MD->isImplicit())
+ continue;
+ if (MD->getImplementationControl() == ObjCMethodDecl::Optional)
+ continue;
+ DeclContext::lookup_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 StringRef GetUnsignedName(StringRef NSIntegerName) {
+ StringRef UnsignedName = llvm::StringSwitch<StringRef>(NSIntegerName)
+ .Case("int8_t", "uint8_t")
+ .Case("int16_t", "uint16_t")
+ .Case("int32_t", "uint32_t")
+ .Case("NSInteger", "NSUInteger")
+ .Case("int64_t", "uint64_t")
+ .Default(NSIntegerName);
+ return UnsignedName;
+}
+
+static bool rewriteToNSEnumDecl(const EnumDecl *EnumDcl,
+ const TypedefDecl *TypedefDcl,
+ const NSAPI &NS, edit::Commit &commit,
+ StringRef NSIntegerName,
+ bool NSOptions) {
+ std::string ClassString;
+ if (NSOptions) {
+ ClassString = "typedef NS_OPTIONS(";
+ ClassString += GetUnsignedName(NSIntegerName);
+ }
+ else {
+ ClassString = "typedef NS_ENUM(";
+ ClassString += NSIntegerName;
+ }
+ ClassString += ", ";
+
+ ClassString += TypedefDcl->getIdentifier()->getName();
+ ClassString += ')';
+ SourceRange R(EnumDcl->getLocStart(), EnumDcl->getLocStart());
+ commit.replace(R, ClassString);
+ SourceLocation EndOfEnumDclLoc = EnumDcl->getLocEnd();
+ EndOfEnumDclLoc = trans::findSemiAfterLocation(EndOfEnumDclLoc,
+ NS.getASTContext(), /*IsDecl*/true);
+ if (!EndOfEnumDclLoc.isInvalid()) {
+ SourceRange EnumDclRange(EnumDcl->getLocStart(), EndOfEnumDclLoc);
+ commit.insertFromRange(TypedefDcl->getLocStart(), EnumDclRange);
+ }
+ else
+ return false;
+
+ SourceLocation EndTypedefDclLoc = TypedefDcl->getLocEnd();
+ EndTypedefDclLoc = trans::findSemiAfterLocation(EndTypedefDclLoc,
+ NS.getASTContext(), /*IsDecl*/true);
+ if (!EndTypedefDclLoc.isInvalid()) {
+ SourceRange TDRange(TypedefDcl->getLocStart(), EndTypedefDclLoc);
+ commit.remove(TDRange);
+ }
+ else
+ return false;
+
+ EndOfEnumDclLoc = trans::findLocationAfterSemi(EnumDcl->getLocEnd(), NS.getASTContext(),
+ /*IsDecl*/true);
+ if (!EndOfEnumDclLoc.isInvalid()) {
+ SourceLocation BeginOfEnumDclLoc = EnumDcl->getLocStart();
+ // FIXME. This assumes that enum decl; is immediately preceded by eoln.
+ // It is trying to remove the enum decl. lines entirely.
+ BeginOfEnumDclLoc = BeginOfEnumDclLoc.getLocWithOffset(-1);
+ commit.remove(SourceRange(BeginOfEnumDclLoc, EndOfEnumDclLoc));
+ return true;
+ }
+ return false;
+}
+
+static void rewriteToNSMacroDecl(ASTContext &Ctx,
+ const EnumDecl *EnumDcl,
+ const TypedefDecl *TypedefDcl,
+ const NSAPI &NS, edit::Commit &commit,
+ bool IsNSIntegerType) {
+ QualType DesignatedEnumType = EnumDcl->getIntegerType();
+ assert(!DesignatedEnumType.isNull()
+ && "rewriteToNSMacroDecl - underlying enum type is null");
+
+ PrintingPolicy Policy(Ctx.getPrintingPolicy());
+ std::string TypeString = DesignatedEnumType.getAsString(Policy);
+ std::string ClassString = IsNSIntegerType ? "NS_ENUM(" : "NS_OPTIONS(";
+ ClassString += TypeString;
+ ClassString += ", ";
+
+ ClassString += TypedefDcl->getIdentifier()->getName();
+ ClassString += ')';
+ SourceLocation EndLoc;
+ if (EnumDcl->getIntegerTypeSourceInfo()) {
+ TypeSourceInfo *TSourceInfo = EnumDcl->getIntegerTypeSourceInfo();
+ TypeLoc TLoc = TSourceInfo->getTypeLoc();
+ EndLoc = TLoc.getLocEnd();
+ const char *lbrace = Ctx.getSourceManager().getCharacterData(EndLoc);
+ unsigned count = 0;
+ if (lbrace)
+ while (lbrace[count] != '{')
+ ++count;
+ if (count > 0)
+ EndLoc = EndLoc.getLocWithOffset(count-1);
+ }
+ else
+ EndLoc = EnumDcl->getLocStart();
+ SourceRange R(EnumDcl->getLocStart(), EndLoc);
+ commit.replace(R, ClassString);
+ // This is to remove spaces between '}' and typedef name.
+ SourceLocation StartTypedefLoc = EnumDcl->getLocEnd();
+ StartTypedefLoc = StartTypedefLoc.getLocWithOffset(+1);
+ SourceLocation EndTypedefLoc = TypedefDcl->getLocEnd();
+
+ commit.remove(SourceRange(StartTypedefLoc, EndTypedefLoc));
+}
+
+static bool UseNSOptionsMacro(Preprocessor &PP, ASTContext &Ctx,
+ const EnumDecl *EnumDcl) {
+ bool PowerOfTwo = true;
+ bool AllHexdecimalEnumerator = true;
+ uint64_t MaxPowerOfTwoVal = 0;
+ for (auto Enumerator : EnumDcl->enumerators()) {
+ const Expr *InitExpr = Enumerator->getInitExpr();
+ if (!InitExpr) {
+ PowerOfTwo = false;
+ AllHexdecimalEnumerator = false;
+ continue;
+ }
+ InitExpr = InitExpr->IgnoreParenCasts();
+ 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 (AllHexdecimalEnumerator && EnumVal) {
+ bool FoundHexdecimalEnumerator = false;
+ 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'));
+ }
+ if (!FoundHexdecimalEnumerator)
+ AllHexdecimalEnumerator = false;
+ }
+ }
+ return AllHexdecimalEnumerator || (PowerOfTwo && (MaxPowerOfTwoVal > 2));
+}
+
+void ObjCMigrateASTConsumer::migrateProtocolConformance(ASTContext &Ctx,
+ const ObjCImplementationDecl *ImpDecl) {
+ const ObjCInterfaceDecl *IDecl = ImpDecl->getClassInterface();
+ if (!IDecl || ObjCProtocolDecls.empty() || IDecl->isDeprecated())
+ 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 (ObjCProtocolDecl *ProtDecl : ObjCProtocolDecls)
+ if (!ExplicitProtocols.count(ProtDecl))
+ PotentialImplicitProtocols.push_back(ProtDecl);
+
+ 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);
+ }
+ if (MinimalConformingProtocols.empty())
+ return;
+ edit::Commit commit(*Editor);
+ rewriteToObjCInterfaceDecl(IDecl, MinimalConformingProtocols,
+ *NSAPIObj, commit);
+ Editor->commit(commit);
+}
+
+void ObjCMigrateASTConsumer::CacheObjCNSIntegerTypedefed(
+ const TypedefDecl *TypedefDcl) {
+
+ QualType qt = TypedefDcl->getTypeSourceInfo()->getType();
+ if (NSAPIObj->isObjCNSIntegerType(qt))
+ NSIntegerTypedefed = TypedefDcl;
+ else if (NSAPIObj->isObjCNSUIntegerType(qt))
+ NSUIntegerTypedefed = TypedefDcl;
+}
+
+bool ObjCMigrateASTConsumer::migrateNSEnumDecl(ASTContext &Ctx,
+ const EnumDecl *EnumDcl,
+ const TypedefDecl *TypedefDcl) {
+ if (!EnumDcl->isCompleteDefinition() || EnumDcl->getIdentifier() ||
+ EnumDcl->isDeprecated())
+ return false;
+ if (!TypedefDcl) {
+ if (NSIntegerTypedefed) {
+ TypedefDcl = NSIntegerTypedefed;
+ NSIntegerTypedefed = nullptr;
+ }
+ else if (NSUIntegerTypedefed) {
+ TypedefDcl = NSUIntegerTypedefed;
+ NSUIntegerTypedefed = nullptr;
+ }
+ else
+ return false;
+ FileID FileIdOfTypedefDcl =
+ PP.getSourceManager().getFileID(TypedefDcl->getLocation());
+ FileID FileIdOfEnumDcl =
+ PP.getSourceManager().getFileID(EnumDcl->getLocation());
+ if (FileIdOfTypedefDcl != FileIdOfEnumDcl)
+ return false;
+ }
+ if (TypedefDcl->isDeprecated())
+ return false;
+
+ QualType qt = TypedefDcl->getTypeSourceInfo()->getType();
+ StringRef NSIntegerName = NSAPIObj->GetNSIntegralKind(qt);
+
+ if (NSIntegerName.empty()) {
+ // Also check for typedef enum {...} TD;
+ if (const EnumType *EnumTy = qt->getAs<EnumType>()) {
+ if (EnumTy->getDecl() == EnumDcl) {
+ bool NSOptions = UseNSOptionsMacro(PP, Ctx, EnumDcl);
+ if (!InsertFoundation(Ctx, TypedefDcl->getLocStart()))
+ return false;
+ edit::Commit commit(*Editor);
+ rewriteToNSMacroDecl(Ctx, EnumDcl, TypedefDcl, *NSAPIObj, commit, !NSOptions);
+ Editor->commit(commit);
+ return true;
+ }
+ }
+ return false;
+ }
+
+ // We may still use NS_OPTIONS based on what we find in the enumertor list.
+ bool NSOptions = UseNSOptionsMacro(PP, Ctx, EnumDcl);
+ if (!InsertFoundation(Ctx, TypedefDcl->getLocStart()))
+ return false;
+ edit::Commit commit(*Editor);
+ bool Res = rewriteToNSEnumDecl(EnumDcl, TypedefDcl, *NSAPIObj,
+ commit, NSIntegerName, NSOptions);
+ Editor->commit(commit);
+ return Res;
+}
+
+static void ReplaceWithInstancetype(ASTContext &Ctx,
+ const ObjCMigrateASTConsumer &ASTC,
+ ObjCMethodDecl *OM) {
+ if (OM->getReturnType() == Ctx.getObjCInstanceType())
+ return; // already has instancetype.
+
+ SourceRange R;
+ std::string ClassString;
+ if (TypeSourceInfo *TSInfo = OM->getReturnTypeSourceInfo()) {
+ 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);
+}
+
+static void ReplaceWithClasstype(const ObjCMigrateASTConsumer &ASTC,
+ ObjCMethodDecl *OM) {
+ ObjCInterfaceDecl *IDecl = OM->getClassInterface();
+ SourceRange R;
+ std::string ClassString;
+ if (TypeSourceInfo *TSInfo = OM->getReturnTypeSourceInfo()) {
+ TypeLoc TL = TSInfo->getTypeLoc();
+ R = SourceRange(TL.getBeginLoc(), TL.getEndLoc()); {
+ ClassString = IDecl->getName();
+ ClassString += "*";
+ }
+ }
+ else {
+ R = SourceRange(OM->getLocStart(), OM->getLocStart());
+ ClassString = "+ (";
+ ClassString += IDecl->getName(); ClassString += "*)";
+ }
+ edit::Commit commit(*ASTC.Editor);
+ commit.replace(R, ClassString);
+ ASTC.Editor->commit(commit);
+}
+
+void ObjCMigrateASTConsumer::migrateMethodInstanceType(ASTContext &Ctx,
+ ObjCContainerDecl *CDecl,
+ ObjCMethodDecl *OM) {
+ 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;
+ case OIT_Init:
+ if (OM->getReturnType()->isObjCIdType())
+ ReplaceWithInstancetype(Ctx, *this, OM);
+ return;
+ case OIT_ReturnsSelf:
+ migrateFactoryMethod(Ctx, CDecl, OM, OIT_ReturnsSelf);
+ return;
+ }
+ if (!OM->getReturnType()->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(Ctx, *this, OM);
+}
+
+static bool TypeIsInnerPointer(QualType T) {
+ if (!T->isAnyPointerType())
+ return false;
+ if (T->isObjCObjectPointerType() || T->isObjCBuiltinType() ||
+ T->isBlockPointerType() || T->isFunctionPointerType() ||
+ ento::coreFoundation::isCFObjectRef(T))
+ return false;
+ // Also, typedef-of-pointer-to-incomplete-struct is something that we assume
+ // is not an innter pointer type.
+ QualType OrigT = T;
+ while (const TypedefType *TD = dyn_cast<TypedefType>(T.getTypePtr()))
+ T = TD->getDecl()->getUnderlyingType();
+ if (OrigT == T || !T->isPointerType())
+ return true;
+ const PointerType* PT = T->getAs<PointerType>();
+ QualType UPointeeT = PT->getPointeeType().getUnqualifiedType();
+ if (UPointeeT->isRecordType()) {
+ const RecordType *RecordTy = UPointeeT->getAs<RecordType>();
+ if (!RecordTy->getDecl()->isCompleteDefinition())
+ return false;
+ }
+ return true;
+}
+
+/// \brief Check whether the two versions match.
+static bool versionsMatch(const VersionTuple &X, const VersionTuple &Y) {
+ return (X == Y);
+}
+
+/// AvailabilityAttrsMatch - This routine checks that if comparing two
+/// availability attributes, all their components match. It returns
+/// true, if not dealing with availability or when all components of
+/// availability attributes match. This routine is only called when
+/// the attributes are of the same kind.
+static bool AvailabilityAttrsMatch(Attr *At1, Attr *At2) {
+ const AvailabilityAttr *AA1 = dyn_cast<AvailabilityAttr>(At1);
+ if (!AA1)
+ return true;
+ const AvailabilityAttr *AA2 = dyn_cast<AvailabilityAttr>(At2);
+
+ VersionTuple Introduced1 = AA1->getIntroduced();
+ VersionTuple Deprecated1 = AA1->getDeprecated();
+ VersionTuple Obsoleted1 = AA1->getObsoleted();
+ bool IsUnavailable1 = AA1->getUnavailable();
+ VersionTuple Introduced2 = AA2->getIntroduced();
+ VersionTuple Deprecated2 = AA2->getDeprecated();
+ VersionTuple Obsoleted2 = AA2->getObsoleted();
+ bool IsUnavailable2 = AA2->getUnavailable();
+ return (versionsMatch(Introduced1, Introduced2) &&
+ versionsMatch(Deprecated1, Deprecated2) &&
+ versionsMatch(Obsoleted1, Obsoleted2) &&
+ IsUnavailable1 == IsUnavailable2);
+
+}
+
+static bool MatchTwoAttributeLists(const AttrVec &Attrs1, const AttrVec &Attrs2,
+ bool &AvailabilityArgsMatch) {
+ // This list is very small, so this need not be optimized.
+ for (unsigned i = 0, e = Attrs1.size(); i != e; i++) {
+ bool match = false;
+ for (unsigned j = 0, f = Attrs2.size(); j != f; j++) {
+ // Matching attribute kind only. Except for Availabilty attributes,
+ // we are not getting into details of the attributes. For all practical purposes
+ // this is sufficient.
+ if (Attrs1[i]->getKind() == Attrs2[j]->getKind()) {
+ if (AvailabilityArgsMatch)
+ AvailabilityArgsMatch = AvailabilityAttrsMatch(Attrs1[i], Attrs2[j]);
+ match = true;
+ break;
+ }
+ }
+ if (!match)
+ return false;
+ }
+ return true;
+}
+
+/// AttributesMatch - This routine checks list of attributes for two
+/// decls. It returns false, if there is a mismatch in kind of
+/// attributes seen in the decls. It returns true if the two decls
+/// have list of same kind of attributes. Furthermore, when there
+/// are availability attributes in the two decls, it sets the
+/// AvailabilityArgsMatch to false if availability attributes have
+/// different versions, etc.
+static bool AttributesMatch(const Decl *Decl1, const Decl *Decl2,
+ bool &AvailabilityArgsMatch) {
+ if (!Decl1->hasAttrs() || !Decl2->hasAttrs()) {
+ AvailabilityArgsMatch = (Decl1->hasAttrs() == Decl2->hasAttrs());
+ return true;
+ }
+ AvailabilityArgsMatch = true;
+ const AttrVec &Attrs1 = Decl1->getAttrs();
+ const AttrVec &Attrs2 = Decl2->getAttrs();
+ bool match = MatchTwoAttributeLists(Attrs1, Attrs2, AvailabilityArgsMatch);
+ if (match && (Attrs2.size() > Attrs1.size()))
+ return MatchTwoAttributeLists(Attrs2, Attrs1, AvailabilityArgsMatch);
+ return match;
+}
+
+static bool IsValidIdentifier(ASTContext &Ctx,
+ const char *Name) {
+ if (!isIdentifierHead(Name[0]))
+ return false;
+ std::string NameString = Name;
+ NameString[0] = toLowercase(NameString[0]);
+ IdentifierInfo *II = &Ctx.Idents.get(NameString);
+ return II->getTokenID() == tok::identifier;
+}
+
+bool ObjCMigrateASTConsumer::migrateProperty(ASTContext &Ctx,
+ ObjCContainerDecl *D,
+ ObjCMethodDecl *Method) {
+ if (Method->isPropertyAccessor() || !Method->isInstanceMethod() ||
+ Method->param_size() != 0)
+ return false;
+ // Is this method candidate to be a getter?
+ QualType GRT = Method->getReturnType();
+ if (GRT->isVoidType())
+ return false;
+
+ Selector GetterSelector = Method->getSelector();
+ ObjCInstanceTypeFamily OIT_Family =
+ Selector::getInstTypeMethodFamily(GetterSelector);
+
+ if (OIT_Family != OIT_None)
+ return false;
+
+ IdentifierInfo *getterName = GetterSelector.getIdentifierInfoForSlot(0);
+ Selector SetterSelector =
+ SelectorTable::constructSetterSelector(PP.getIdentifierTable(),
+ PP.getSelectorTable(),
+ getterName);
+ ObjCMethodDecl *SetterMethod = D->getInstanceMethod(SetterSelector);
+ unsigned LengthOfPrefix = 0;
+ if (!SetterMethod) {
+ // try a different naming convention for getter: isXxxxx
+ StringRef getterNameString = getterName->getName();
+ bool IsPrefix = getterNameString.startswith("is");
+ // Note that we don't want to change an isXXX method of retainable object
+ // type to property (readonly or otherwise).
+ if (IsPrefix && GRT->isObjCRetainableType())
+ return false;
+ if (IsPrefix || getterNameString.startswith("get")) {
+ LengthOfPrefix = (IsPrefix ? 2 : 3);
+ const char *CGetterName = getterNameString.data() + LengthOfPrefix;
+ // Make sure that first character after "is" or "get" prefix can
+ // start an identifier.
+ if (!IsValidIdentifier(Ctx, CGetterName))
+ return false;
+ if (CGetterName[0] && isUppercase(CGetterName[0])) {
+ getterName = &Ctx.Idents.get(CGetterName);
+ SetterSelector =
+ SelectorTable::constructSetterSelector(PP.getIdentifierTable(),
+ PP.getSelectorTable(),
+ getterName);
+ SetterMethod = D->getInstanceMethod(SetterSelector);
+ }
+ }
+ }
+
+ if (SetterMethod) {
+ if ((ASTMigrateActions & FrontendOptions::ObjCMT_ReadwriteProperty) == 0)
+ return false;
+ bool AvailabilityArgsMatch;
+ if (SetterMethod->isDeprecated() ||
+ !AttributesMatch(Method, SetterMethod, AvailabilityArgsMatch))
+ return false;
+
+ // Is this a valid setter, matching the target getter?
+ QualType SRT = SetterMethod->getReturnType();
+ if (!SRT->isVoidType())
+ return false;
+ const ParmVarDecl *argDecl = *SetterMethod->param_begin();
+ QualType ArgType = argDecl->getType();
+ if (!Ctx.hasSameUnqualifiedType(ArgType, GRT))
+ return false;
+ edit::Commit commit(*Editor);
+ rewriteToObjCProperty(Method, SetterMethod, *NSAPIObj, commit,
+ LengthOfPrefix,
+ (ASTMigrateActions &
+ FrontendOptions::ObjCMT_AtomicProperty) != 0,
+ (ASTMigrateActions &
+ FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty) != 0,
+ AvailabilityArgsMatch);
+ Editor->commit(commit);
+ return true;
+ }
+ else if (ASTMigrateActions & FrontendOptions::ObjCMT_ReadonlyProperty) {
+ // 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, nullptr /*SetterMethod*/, *NSAPIObj, commit,
+ LengthOfPrefix,
+ (ASTMigrateActions &
+ FrontendOptions::ObjCMT_AtomicProperty) != 0,
+ (ASTMigrateActions &
+ FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty) != 0,
+ /*AvailabilityArgsMatch*/false);
+ Editor->commit(commit);
+ return true;
+ }
+ return false;
+}
+
+void ObjCMigrateASTConsumer::migrateNsReturnsInnerPointer(ASTContext &Ctx,
+ ObjCMethodDecl *OM) {
+ if (OM->isImplicit() ||
+ !OM->isInstanceMethod() ||
+ OM->hasAttr<ObjCReturnsInnerPointerAttr>())
+ return;
+
+ QualType RT = OM->getReturnType();
+ if (!TypeIsInnerPointer(RT) ||
+ !NSAPIObj->isMacroDefined("NS_RETURNS_INNER_POINTER"))
+ return;
+
+ edit::Commit commit(*Editor);
+ commit.insertBefore(OM->getLocEnd(), " NS_RETURNS_INNER_POINTER");
+ Editor->commit(commit);
+}
+
+void ObjCMigrateASTConsumer::migratePropertyNsReturnsInnerPointer(ASTContext &Ctx,
+ ObjCPropertyDecl *P) {
+ QualType T = P->getType();
+
+ if (!TypeIsInnerPointer(T) ||
+ !NSAPIObj->isMacroDefined("NS_RETURNS_INNER_POINTER"))
+ return;
+ edit::Commit commit(*Editor);
+ commit.insertBefore(P->getLocEnd(), " NS_RETURNS_INNER_POINTER ");
+ Editor->commit(commit);
+}
+
+void ObjCMigrateASTConsumer::migrateAllMethodInstaceType(ASTContext &Ctx,
+ ObjCContainerDecl *CDecl) {
+ if (CDecl->isDeprecated() || IsCategoryNameWithDeprecatedSuffix(CDecl))
+ return;
+
+ // migrate methods which can have instancetype as their result type.
+ for (auto *Method : CDecl->methods()) {
+ if (Method->isDeprecated())
+ continue;
+ migrateMethodInstanceType(Ctx, CDecl, Method);
+ }
+}
+
+void ObjCMigrateASTConsumer::migrateFactoryMethod(ASTContext &Ctx,
+ ObjCContainerDecl *CDecl,
+ ObjCMethodDecl *OM,
+ ObjCInstanceTypeFamily OIT_Family) {
+ if (OM->isInstanceMethod() ||
+ OM->getReturnType() == Ctx.getObjCInstanceType() ||
+ !OM->getReturnType()->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 || OIT_Family == OIT_ReturnsSelf) {
+ 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;
+ if (OIT_Family == OIT_ReturnsSelf)
+ ReplaceWithClasstype(*this, OM);
+ else
+ ReplaceWithInstancetype(Ctx, *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 (!NSAPIObj->isMacroDefined("CF_IMPLICIT_BRIDGING_ENABLED")) {
+ CFFunctionIBCandidates.clear();
+ FileId = FileID();
+ 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 = FileID();
+ CFFunctionIBCandidates.clear();
+}
+
+void ObjCMigrateASTConsumer::migrateCFAnnotation(ASTContext &Ctx, const Decl *Decl) {
+ if (Decl->isDeprecated())
+ return;
+
+ 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.
+ if (const FunctionDecl *FuncDecl = dyn_cast<FunctionDecl>(Decl)) {
+ CF_BRIDGING_KIND AuditKind = migrateAddFunctionAnnotation(Ctx, FuncDecl);
+ if (AuditKind == CF_BRIDGING_ENABLE) {
+ CFFunctionIBCandidates.push_back(Decl);
+ if (FileId.isInvalid())
+ FileId = PP.getSourceManager().getFileID(Decl->getLocation());
+ }
+ else if (AuditKind == CF_BRIDGING_MAY_INCLUDE) {
+ if (!CFFunctionIBCandidates.empty()) {
+ CFFunctionIBCandidates.push_back(Decl);
+ if (FileId.isInvalid())
+ FileId = PP.getSourceManager().getFileID(Decl->getLocation());
+ }
+ }
+ else
+ AnnotateImplicitBridging(Ctx);
+ }
+ else {
+ migrateAddMethodAnnotation(Ctx, cast<ObjCMethodDecl>(Decl));
+ 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 = nullptr;
+ if (Ret.getObjKind() == RetEffect::CF) {
+ if (Ret.isOwned() && NSAPIObj->isMacroDefined("CF_RETURNS_RETAINED"))
+ AnnotationString = " CF_RETURNS_RETAINED";
+ else if (Ret.notOwned() &&
+ NSAPIObj->isMacroDefined("CF_RETURNS_NOT_RETAINED"))
+ AnnotationString = " CF_RETURNS_NOT_RETAINED";
+ }
+ else if (Ret.getObjKind() == RetEffect::ObjC) {
+ if (Ret.isOwned() && NSAPIObj->isMacroDefined("NS_RETURNS_RETAINED"))
+ AnnotationString = " NS_RETURNS_RETAINED";
+ }
+
+ if (AnnotationString) {
+ edit::Commit commit(*Editor);
+ commit.insertAfterToken(FuncDecl->getLocEnd(), AnnotationString);
+ Editor->commit(commit);
+ }
+ }
+ 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->hasAttr<CFConsumedAttr>() &&
+ NSAPIObj->isMacroDefined("CF_CONSUMED")) {
+ edit::Commit commit(*Editor);
+ commit.insertBefore(pd->getLocation(), "CF_CONSUMED ");
+ Editor->commit(commit);
+ }
+ else if (AE == DecRefMsg && !pd->hasAttr<NSConsumedAttr>() &&
+ NSAPIObj->isMacroDefined("NS_CONSUMED")) {
+ edit::Commit commit(*Editor);
+ commit.insertBefore(pd->getLocation(), "NS_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->hasAttr<CFReturnsRetainedAttr>() ||
+ FuncDecl->hasAttr<CFReturnsNotRetainedAttr>() ||
+ FuncDecl->hasAttr<NSReturnsRetainedAttr>() ||
+ FuncDecl->hasAttr<NSReturnsNotRetainedAttr>() ||
+ FuncDecl->hasAttr<NSReturnsAutoreleasedAttr>());
+
+ // 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.notOwned()))
+ ReturnCFAudited = true;
+ else if (!AuditedType(FuncDecl->getReturnType()))
+ return CF_BRIDGING_NONE;
+ }
+
+ // At this point result type is audited for potential inclusion.
+ // Now, how about argument types.
+ 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->hasAttr<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) || CDecl->isDeprecated())
+ return;
+
+ // migrate methods which can have instancetype as their result type.
+ for (const auto *Method : CDecl->methods())
+ 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 = nullptr;
+ if (Ret.getObjKind() == RetEffect::CF) {
+ if (Ret.isOwned() && NSAPIObj->isMacroDefined("CF_RETURNS_RETAINED"))
+ AnnotationString = " CF_RETURNS_RETAINED";
+ else if (Ret.notOwned() &&
+ NSAPIObj->isMacroDefined("CF_RETURNS_NOT_RETAINED"))
+ AnnotationString = " CF_RETURNS_NOT_RETAINED";
+ }
+ else if (Ret.getObjKind() == RetEffect::ObjC) {
+ ObjCMethodFamily OMF = MethodDecl->getMethodFamily();
+ switch (OMF) {
+ case clang::OMF_alloc:
+ case clang::OMF_new:
+ case clang::OMF_copy:
+ case clang::OMF_init:
+ case clang::OMF_mutableCopy:
+ break;
+
+ default:
+ if (Ret.isOwned() && NSAPIObj->isMacroDefined("NS_RETURNS_RETAINED"))
+ AnnotationString = " NS_RETURNS_RETAINED";
+ break;
+ }
+ }
+
+ if (AnnotationString) {
+ edit::Commit commit(*Editor);
+ commit.insertBefore(MethodDecl->getLocEnd(), AnnotationString);
+ Editor->commit(commit);
+ }
+ }
+ 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->hasAttr<CFConsumedAttr>() &&
+ NSAPIObj->isMacroDefined("CF_CONSUMED")) {
+ edit::Commit commit(*Editor);
+ commit.insertBefore(pd->getLocation(), "CF_CONSUMED ");
+ Editor->commit(commit);
+ }
+ }
+}
+
+void ObjCMigrateASTConsumer::migrateAddMethodAnnotation(
+ ASTContext &Ctx,
+ const ObjCMethodDecl *MethodDecl) {
+ if (MethodDecl->hasBody() || MethodDecl->isImplicit())
+ return;
+
+ CallEffects CE = CallEffects::getEffect(MethodDecl);
+ bool MethodIsReturnAnnotated = (MethodDecl->hasAttr<CFReturnsRetainedAttr>() ||
+ MethodDecl->hasAttr<CFReturnsNotRetainedAttr>() ||
+ MethodDecl->hasAttr<NSReturnsRetainedAttr>() ||
+ MethodDecl->hasAttr<NSReturnsNotRetainedAttr>() ||
+ MethodDecl->hasAttr<NSReturnsAutoreleasedAttr>());
+
+ if (CE.getReceiver() == DecRefMsg &&
+ !MethodDecl->hasAttr<NSConsumesSelfAttr>() &&
+ MethodDecl->getMethodFamily() != OMF_init &&
+ MethodDecl->getMethodFamily() != OMF_release &&
+ NSAPIObj->isMacroDefined("NS_CONSUMES_SELF")) {
+ edit::Commit commit(*Editor);
+ commit.insertBefore(MethodDecl->getLocEnd(), " NS_CONSUMES_SELF");
+ Editor->commit(commit);
+ }
+
+ // Trivial case of when funciton is annotated and has no argument.
+ if (MethodIsReturnAnnotated &&
+ (MethodDecl->param_begin() == MethodDecl->param_end()))
+ return;
+
+ if (!MethodIsReturnAnnotated) {
+ RetEffect Ret = CE.getReturnValue();
+ if ((Ret.getObjKind() == RetEffect::CF ||
+ Ret.getObjKind() == RetEffect::ObjC) &&
+ (Ret.isOwned() || Ret.notOwned())) {
+ AddCFAnnotations(Ctx, CE, MethodDecl, false);
+ return;
+ } else if (!AuditedType(MethodDecl->getReturnType()))
+ return;
+ }
+
+ // At this point result type is either annotated or audited.
+ // Now, how about argument types.
+ 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->hasAttr<CFConsumedAttr>()) || AE == IncRef ||
+ !AuditedType(pd->getType())) {
+ AddCFAnnotations(Ctx, CE, MethodDecl, MethodIsReturnAnnotated);
+ return;
+ }
+ }
+ return;
+}
+
+namespace {
+class SuperInitChecker : public RecursiveASTVisitor<SuperInitChecker> {
+public:
+ bool shouldVisitTemplateInstantiations() const { return false; }
+ bool shouldWalkTypesOfTypeLocs() const { return false; }
+
+ bool VisitObjCMessageExpr(ObjCMessageExpr *E) {
+ if (E->getReceiverKind() == ObjCMessageExpr::SuperInstance) {
+ if (E->getMethodFamily() == OMF_init)
+ return false;
+ }
+ return true;
+ }
+};
+} // anonymous namespace
+
+static bool hasSuperInitCall(const ObjCMethodDecl *MD) {
+ return !SuperInitChecker().TraverseStmt(MD->getBody());
+}
+
+void ObjCMigrateASTConsumer::inferDesignatedInitializers(
+ ASTContext &Ctx,
+ const ObjCImplementationDecl *ImplD) {
+
+ const ObjCInterfaceDecl *IFace = ImplD->getClassInterface();
+ if (!IFace || IFace->hasDesignatedInitializers())
+ return;
+ if (!NSAPIObj->isMacroDefined("NS_DESIGNATED_INITIALIZER"))
+ return;
+
+ for (const auto *MD : ImplD->instance_methods()) {
+ if (MD->isDeprecated() ||
+ MD->getMethodFamily() != OMF_init ||
+ MD->isDesignatedInitializerForTheInterface())
+ continue;
+ const ObjCMethodDecl *IFaceM = IFace->getMethod(MD->getSelector(),
+ /*isInstance=*/true);
+ if (!IFaceM)
+ continue;
+ if (hasSuperInitCall(MD)) {
+ edit::Commit commit(*Editor);
+ commit.insert(IFaceM->getLocEnd(), " NS_DESIGNATED_INITIALIZER");
+ Editor->commit(commit);
+ }
+ }
+}
+
+bool ObjCMigrateASTConsumer::InsertFoundation(ASTContext &Ctx,
+ SourceLocation Loc) {
+ if (FoundationIncluded)
+ return true;
+ if (Loc.isInvalid())
+ return false;
+ edit::Commit commit(*Editor);
+ if (Ctx.getLangOpts().Modules)
+ commit.insert(Loc, "#ifndef NS_ENUM\n@import Foundation;\n#endif\n");
+ else
+ commit.insert(Loc, "#ifndef NS_ENUM\n#import <Foundation/Foundation.h>\n#endif\n");
+ Editor->commit(commit);
+ FoundationIncluded = true;
+ return true;
+}
+
+namespace {
+
+class RewritesReceiver : public edit::EditsReceiver {
+ Rewriter &Rewrite;
+
+public:
+ RewritesReceiver(Rewriter &Rewrite) : Rewrite(Rewrite) { }
+
+ void insert(SourceLocation loc, StringRef text) override {
+ Rewrite.InsertText(loc, text);
+ }
+ void replace(CharSourceRange range, StringRef text) override {
+ Rewrite.ReplaceText(range.getBegin(), Rewrite.getRangeSize(range), text);
+ }
+};
+
+class JSONEditWriter : public edit::EditsReceiver {
+ SourceManager &SourceMgr;
+ llvm::raw_ostream &OS;
+
+public:
+ JSONEditWriter(SourceManager &SM, llvm::raw_ostream &OS)
+ : SourceMgr(SM), OS(OS) {
+ OS << "[\n";
+ }
+ ~JSONEditWriter() override { OS << "]\n"; }
+
+private:
+ struct EntryWriter {
+ SourceManager &SourceMgr;
+ llvm::raw_ostream &OS;
+
+ EntryWriter(SourceManager &SM, llvm::raw_ostream &OS)
+ : SourceMgr(SM), OS(OS) {
+ OS << " {\n";
+ }
+ ~EntryWriter() {
+ OS << " },\n";
+ }
+
+ void writeLoc(SourceLocation Loc) {
+ FileID FID;
+ unsigned Offset;
+ std::tie(FID, Offset) = SourceMgr.getDecomposedLoc(Loc);
+ assert(!FID.isInvalid());
+ SmallString<200> Path =
+ StringRef(SourceMgr.getFileEntryForID(FID)->getName());
+ llvm::sys::fs::make_absolute(Path);
+ OS << " \"file\": \"";
+ OS.write_escaped(Path.str()) << "\",\n";
+ OS << " \"offset\": " << Offset << ",\n";
+ }
+
+ void writeRemove(CharSourceRange Range) {
+ assert(Range.isCharRange());
+ std::pair<FileID, unsigned> Begin =
+ SourceMgr.getDecomposedLoc(Range.getBegin());
+ std::pair<FileID, unsigned> End =
+ SourceMgr.getDecomposedLoc(Range.getEnd());
+ assert(Begin.first == End.first);
+ assert(Begin.second <= End.second);
+ unsigned Length = End.second - Begin.second;
+
+ OS << " \"remove\": " << Length << ",\n";
+ }
+
+ void writeText(StringRef Text) {
+ OS << " \"text\": \"";
+ OS.write_escaped(Text) << "\",\n";
+ }
+ };
+
+ void insert(SourceLocation Loc, StringRef Text) override {
+ EntryWriter Writer(SourceMgr, OS);
+ Writer.writeLoc(Loc);
+ Writer.writeText(Text);
+ }
+
+ void replace(CharSourceRange Range, StringRef Text) override {
+ EntryWriter Writer(SourceMgr, OS);
+ Writer.writeLoc(Range.getBegin());
+ Writer.writeRemove(Range);
+ Writer.writeText(Text);
+ }
+
+ void remove(CharSourceRange Range) override {
+ EntryWriter Writer(SourceMgr, OS);
+ Writer.writeLoc(Range.getBegin());
+ Writer.writeRemove(Range);
+ }
+};
+
+}
+
+void ObjCMigrateASTConsumer::HandleTranslationUnit(ASTContext &Ctx) {
+
+ TranslationUnitDecl *TU = Ctx.getTranslationUnitDecl();
+ if (ASTMigrateActions & FrontendOptions::ObjCMT_MigrateDecls) {
+ for (DeclContext::decl_iterator D = TU->decls_begin(), DEnd = TU->decls_end();
+ D != DEnd; ++D) {
+ FileID FID = PP.getSourceManager().getFileID((*D)->getLocation());
+ if (!FID.isInvalid())
+ if (!FileId.isInvalid() && FileId != FID) {
+ if (ASTMigrateActions & FrontendOptions::ObjCMT_Annotation)
+ AnnotateImplicitBridging(Ctx);
+ }
+
+ if (ObjCInterfaceDecl *CDecl = dyn_cast<ObjCInterfaceDecl>(*D))
+ if (canModify(CDecl))
+ migrateObjCContainerDecl(Ctx, CDecl);
+ if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(*D)) {
+ if (canModify(CatDecl))
+ migrateObjCContainerDecl(Ctx, CatDecl);
+ }
+ else if (ObjCProtocolDecl *PDecl = dyn_cast<ObjCProtocolDecl>(*D)) {
+ ObjCProtocolDecls.insert(PDecl->getCanonicalDecl());
+ if (canModify(PDecl))
+ migrateObjCContainerDecl(Ctx, PDecl);
+ }
+ else if (const ObjCImplementationDecl *ImpDecl =
+ dyn_cast<ObjCImplementationDecl>(*D)) {
+ if ((ASTMigrateActions & FrontendOptions::ObjCMT_ProtocolConformance) &&
+ canModify(ImpDecl))
+ migrateProtocolConformance(Ctx, ImpDecl);
+ }
+ else if (const EnumDecl *ED = dyn_cast<EnumDecl>(*D)) {
+ if (!(ASTMigrateActions & FrontendOptions::ObjCMT_NsMacros))
+ continue;
+ if (!canModify(ED))
+ continue;
+ DeclContext::decl_iterator N = D;
+ if (++N != DEnd) {
+ const TypedefDecl *TD = dyn_cast<TypedefDecl>(*N);
+ if (migrateNSEnumDecl(Ctx, ED, TD) && TD)
+ D++;
+ }
+ else
+ migrateNSEnumDecl(Ctx, ED, /*TypedefDecl */nullptr);
+ }
+ else if (const TypedefDecl *TD = dyn_cast<TypedefDecl>(*D)) {
+ if (!(ASTMigrateActions & FrontendOptions::ObjCMT_NsMacros))
+ continue;
+ if (!canModify(TD))
+ continue;
+ DeclContext::decl_iterator N = D;
+ if (++N == DEnd)
+ continue;
+ if (const EnumDecl *ED = dyn_cast<EnumDecl>(*N)) {
+ if (++N != DEnd)
+ if (const TypedefDecl *TDF = dyn_cast<TypedefDecl>(*N)) {
+ // prefer typedef-follows-enum to enum-follows-typedef pattern.
+ if (migrateNSEnumDecl(Ctx, ED, TDF)) {
+ ++D; ++D;
+ CacheObjCNSIntegerTypedefed(TD);
+ continue;
+ }
+ }
+ if (migrateNSEnumDecl(Ctx, ED, TD)) {
+ ++D;
+ continue;
+ }
+ }
+ CacheObjCNSIntegerTypedefed(TD);
+ }
+ else if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(*D)) {
+ if ((ASTMigrateActions & FrontendOptions::ObjCMT_Annotation) &&
+ canModify(FD))
+ migrateCFAnnotation(Ctx, FD);
+ }
+
+ if (ObjCContainerDecl *CDecl = dyn_cast<ObjCContainerDecl>(*D)) {
+ bool CanModify = canModify(CDecl);
+ // migrate methods which can have instancetype as their result type.
+ if ((ASTMigrateActions & FrontendOptions::ObjCMT_Instancetype) &&
+ CanModify)
+ migrateAllMethodInstaceType(Ctx, CDecl);
+ // annotate methods with CF annotations.
+ if ((ASTMigrateActions & FrontendOptions::ObjCMT_Annotation) &&
+ CanModify)
+ migrateARCSafeAnnotation(Ctx, CDecl);
+ }
+
+ if (const ObjCImplementationDecl *
+ ImplD = dyn_cast<ObjCImplementationDecl>(*D)) {
+ if ((ASTMigrateActions & FrontendOptions::ObjCMT_DesignatedInitializer) &&
+ canModify(ImplD))
+ inferDesignatedInitializers(Ctx, ImplD);
+ }
+ }
+ if (ASTMigrateActions & FrontendOptions::ObjCMT_Annotation)
+ AnnotateImplicitBridging(Ctx);
+ }
+
+ if (IsOutputFile) {
+ std::error_code EC;
+ llvm::raw_fd_ostream OS(MigrateDir, EC, llvm::sys::fs::F_None);
+ if (EC) {
+ DiagnosticsEngine &Diags = Ctx.getDiagnostics();
+ Diags.Report(Diags.getCustomDiagID(DiagnosticsEngine::Error, "%0"))
+ << EC.message();
+ return;
+ }
+
+ JSONEditWriter Writer(Ctx.getSourceManager(), OS);
+ Editor->applyRewrites(Writer);
+ return;
+ }
+
+ 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();
+ std::unique_ptr<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(), std::move(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;
+}
+
+static std::vector<std::string> getWhiteListFilenames(StringRef DirPath) {
+ using namespace llvm::sys::fs;
+ using namespace llvm::sys::path;
+
+ std::vector<std::string> Filenames;
+ if (DirPath.empty() || !is_directory(DirPath))
+ return Filenames;
+
+ std::error_code EC;
+ directory_iterator DI = directory_iterator(DirPath, EC);
+ directory_iterator DE;
+ for (; !EC && DI != DE; DI = DI.increment(EC)) {
+ if (is_regular_file(DI->path()))
+ Filenames.push_back(filename(DI->path()));
+ }
+
+ return Filenames;
+}
+
+std::unique_ptr<ASTConsumer>
+MigrateSourceAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
+ PPConditionalDirectiveRecord *
+ PPRec = new PPConditionalDirectiveRecord(CI.getSourceManager());
+ unsigned ObjCMTAction = CI.getFrontendOpts().ObjCMTAction;
+ unsigned ObjCMTOpts = ObjCMTAction;
+ // These are companion flags, they do not enable transformations.
+ ObjCMTOpts &= ~(FrontendOptions::ObjCMT_AtomicProperty |
+ FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty);
+ if (ObjCMTOpts == FrontendOptions::ObjCMT_None) {
+ // If no specific option was given, enable literals+subscripting transforms
+ // by default.
+ ObjCMTAction |= FrontendOptions::ObjCMT_Literals |
+ FrontendOptions::ObjCMT_Subscripting;
+ }
+ CI.getPreprocessor().addPPCallbacks(std::unique_ptr<PPCallbacks>(PPRec));
+ std::vector<std::string> WhiteList =
+ getWhiteListFilenames(CI.getFrontendOpts().ObjCMTWhiteListPath);
+ return llvm::make_unique<ObjCMigrateASTConsumer>(
+ CI.getFrontendOpts().OutputFile, ObjCMTAction, Remapper,
+ CI.getFileManager(), PPRec, CI.getPreprocessor(),
+ /*isOutputFile=*/true, WhiteList);
+}
+
+namespace {
+struct EditEntry {
+ const FileEntry *File;
+ unsigned Offset;
+ unsigned RemoveLen;
+ std::string Text;
+
+ EditEntry() : File(), Offset(), RemoveLen() {}
+};
+}
+
+namespace llvm {
+template<> struct DenseMapInfo<EditEntry> {
+ static inline EditEntry getEmptyKey() {
+ EditEntry Entry;
+ Entry.Offset = unsigned(-1);
+ return Entry;
+ }
+ static inline EditEntry getTombstoneKey() {
+ EditEntry Entry;
+ Entry.Offset = unsigned(-2);
+ return Entry;
+ }
+ static unsigned getHashValue(const EditEntry& Val) {
+ llvm::FoldingSetNodeID ID;
+ ID.AddPointer(Val.File);
+ ID.AddInteger(Val.Offset);
+ ID.AddInteger(Val.RemoveLen);
+ ID.AddString(Val.Text);
+ return ID.ComputeHash();
+ }
+ static bool isEqual(const EditEntry &LHS, const EditEntry &RHS) {
+ return LHS.File == RHS.File &&
+ LHS.Offset == RHS.Offset &&
+ LHS.RemoveLen == RHS.RemoveLen &&
+ LHS.Text == RHS.Text;
+ }
+};
+}
+
+namespace {
+class RemapFileParser {
+ FileManager &FileMgr;
+
+public:
+ RemapFileParser(FileManager &FileMgr) : FileMgr(FileMgr) { }
+
+ bool parse(StringRef File, SmallVectorImpl<EditEntry> &Entries) {
+ using namespace llvm::yaml;
+
+ llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> FileBufOrErr =
+ llvm::MemoryBuffer::getFile(File);
+ if (!FileBufOrErr)
+ return true;
+
+ llvm::SourceMgr SM;
+ Stream YAMLStream(FileBufOrErr.get()->getMemBufferRef(), SM);
+ document_iterator I = YAMLStream.begin();
+ if (I == YAMLStream.end())
+ return true;
+ Node *Root = I->getRoot();
+ if (!Root)
+ return true;
+
+ SequenceNode *SeqNode = dyn_cast<SequenceNode>(Root);
+ if (!SeqNode)
+ return true;
+
+ for (SequenceNode::iterator
+ AI = SeqNode->begin(), AE = SeqNode->end(); AI != AE; ++AI) {
+ MappingNode *MapNode = dyn_cast<MappingNode>(&*AI);
+ if (!MapNode)
+ continue;
+ parseEdit(MapNode, Entries);
+ }
+
+ return false;
+ }
+
+private:
+ void parseEdit(llvm::yaml::MappingNode *Node,
+ SmallVectorImpl<EditEntry> &Entries) {
+ using namespace llvm::yaml;
+ EditEntry Entry;
+ bool Ignore = false;
+
+ for (MappingNode::iterator
+ KVI = Node->begin(), KVE = Node->end(); KVI != KVE; ++KVI) {
+ ScalarNode *KeyString = dyn_cast<ScalarNode>((*KVI).getKey());
+ if (!KeyString)
+ continue;
+ SmallString<10> KeyStorage;
+ StringRef Key = KeyString->getValue(KeyStorage);
+
+ ScalarNode *ValueString = dyn_cast<ScalarNode>((*KVI).getValue());
+ if (!ValueString)
+ continue;
+ SmallString<64> ValueStorage;
+ StringRef Val = ValueString->getValue(ValueStorage);
+
+ if (Key == "file") {
+ const FileEntry *FE = FileMgr.getFile(Val);
+ if (!FE)
+ Ignore = true;
+ Entry.File = FE;
+ } else if (Key == "offset") {
+ if (Val.getAsInteger(10, Entry.Offset))
+ Ignore = true;
+ } else if (Key == "remove") {
+ if (Val.getAsInteger(10, Entry.RemoveLen))
+ Ignore = true;
+ } else if (Key == "text") {
+ Entry.Text = Val;
+ }
+ }
+
+ if (!Ignore)
+ Entries.push_back(Entry);
+ }
+};
+}
+
+static bool reportDiag(const Twine &Err, DiagnosticsEngine &Diag) {
+ Diag.Report(Diag.getCustomDiagID(DiagnosticsEngine::Error, "%0"))
+ << Err.str();
+ return true;
+}
+
+static std::string applyEditsToTemp(const FileEntry *FE,
+ ArrayRef<EditEntry> Edits,
+ FileManager &FileMgr,
+ DiagnosticsEngine &Diag) {
+ using namespace llvm::sys;
+
+ SourceManager SM(Diag, FileMgr);
+ FileID FID = SM.createFileID(FE, SourceLocation(), SrcMgr::C_User);
+ LangOptions LangOpts;
+ edit::EditedSource Editor(SM, LangOpts);
+ for (ArrayRef<EditEntry>::iterator
+ I = Edits.begin(), E = Edits.end(); I != E; ++I) {
+ const EditEntry &Entry = *I;
+ assert(Entry.File == FE);
+ SourceLocation Loc =
+ SM.getLocForStartOfFile(FID).getLocWithOffset(Entry.Offset);
+ CharSourceRange Range;
+ if (Entry.RemoveLen != 0) {
+ Range = CharSourceRange::getCharRange(Loc,
+ Loc.getLocWithOffset(Entry.RemoveLen));
+ }
+
+ edit::Commit commit(Editor);
+ if (Range.isInvalid()) {
+ commit.insert(Loc, Entry.Text);
+ } else if (Entry.Text.empty()) {
+ commit.remove(Range);
+ } else {
+ commit.replace(Range, Entry.Text);
+ }
+ Editor.commit(commit);
+ }
+
+ Rewriter rewriter(SM, LangOpts);
+ RewritesReceiver Rec(rewriter);
+ Editor.applyRewrites(Rec);
+
+ const RewriteBuffer *Buf = rewriter.getRewriteBufferFor(FID);
+ SmallString<512> NewText;
+ llvm::raw_svector_ostream OS(NewText);
+ Buf->write(OS);
+ OS.flush();
+
+ SmallString<64> TempPath;
+ int FD;
+ if (fs::createTemporaryFile(path::filename(FE->getName()),
+ path::extension(FE->getName()), FD,
+ TempPath)) {
+ reportDiag("Could not create file: " + TempPath.str(), Diag);
+ return std::string();
+ }
+
+ llvm::raw_fd_ostream TmpOut(FD, /*shouldClose=*/true);
+ TmpOut.write(NewText.data(), NewText.size());
+ TmpOut.close();
+
+ return TempPath.str();
+}
+
+bool arcmt::getFileRemappingsFromFileList(
+ std::vector<std::pair<std::string,std::string> > &remap,
+ ArrayRef<StringRef> remapFiles,
+ DiagnosticConsumer *DiagClient) {
+ bool hasErrorOccurred = false;
+
+ FileSystemOptions FSOpts;
+ FileManager FileMgr(FSOpts);
+ RemapFileParser Parser(FileMgr);
+
+ IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+ IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
+ new DiagnosticsEngine(DiagID, new DiagnosticOptions,
+ DiagClient, /*ShouldOwnClient=*/false));
+
+ typedef llvm::DenseMap<const FileEntry *, std::vector<EditEntry> >
+ FileEditEntriesTy;
+ FileEditEntriesTy FileEditEntries;
+
+ llvm::DenseSet<EditEntry> EntriesSet;
+
+ for (ArrayRef<StringRef>::iterator
+ I = remapFiles.begin(), E = remapFiles.end(); I != E; ++I) {
+ SmallVector<EditEntry, 16> Entries;
+ if (Parser.parse(*I, Entries))
+ continue;
+
+ for (SmallVectorImpl<EditEntry>::iterator
+ EI = Entries.begin(), EE = Entries.end(); EI != EE; ++EI) {
+ EditEntry &Entry = *EI;
+ if (!Entry.File)
+ continue;
+ std::pair<llvm::DenseSet<EditEntry>::iterator, bool>
+ Insert = EntriesSet.insert(Entry);
+ if (!Insert.second)
+ continue;
+
+ FileEditEntries[Entry.File].push_back(Entry);
+ }
+ }
+
+ for (FileEditEntriesTy::iterator
+ I = FileEditEntries.begin(), E = FileEditEntries.end(); I != E; ++I) {
+ std::string TempFile = applyEditsToTemp(I->first, I->second,
+ FileMgr, *Diags);
+ if (TempFile.empty()) {
+ hasErrorOccurred = true;
+ continue;
+ }
+
+ remap.push_back(std::make_pair(I->first->getName(), TempFile));
+ }
+
+ return hasErrorOccurred;
+}
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