[gardening] Remove redundant repetition of type names (DRY): RepeatedTypeName foo = dyn_cast<RepeatedTypeName>(bar)

Author: practicalswift

Diff for: lib/AST/TypeRepr.cpp

@@ -336,7 +336,7 @@ static void printGenericArgs(ASTPrinter &Printer, const PrintOptions &Opts,
 
 void ComponentIdentTypeRepr::printImpl(ASTPrinter &Printer,
                                        const PrintOptions &Opts) const {
-  if (TypeDecl *TD = dyn_cast_or_null<TypeDecl>(getBoundDecl())) {
+  if (auto *TD = dyn_cast_or_null<TypeDecl>(getBoundDecl())) {
     if (auto MD = dyn_cast<ModuleDecl>(TD))
       Printer.printModuleRef(MD, getIdentifier());
     else

Diff for: lib/ClangImporter/ImportDecl.cpp

@@ -5423,7 +5423,7 @@ SwiftDeclConverter::getImplicitProperty(ImportedName importedName,
                                  FinalAttr(/*IsImplicit=*/true));
 
   // Import the getter.
-  FuncDecl *swiftGetter = dyn_cast_or_null<FuncDecl>(
+  auto *swiftGetter = dyn_cast_or_null<FuncDecl>(
       importFunctionDecl(getter, getterName, None, property));
   if (!swiftGetter)
     return nullptr;

Diff for: lib/IDE/Formatting.cpp

@@ -200,7 +200,7 @@ class FormatContext {
 
       if (ParentLineAndColumn.first != LineAndColumn.first) {
         // The start line is not the same, see if this is at the 'else' clause.
-        if (IfStmt *If = dyn_cast_or_null<IfStmt>(Cursor->getAsStmt())) {
+        if (auto *If = dyn_cast_or_null<IfStmt>(Cursor->getAsStmt())) {
           SourceLoc ElseLoc = If->getElseLoc();
           // If we're at 'else', take the indent of 'if' and continue.
           if (ElseLoc.isValid() &&
@@ -268,7 +268,7 @@ class FormatContext {
     }
 
     // Handle switch / case, indent unless at a case label.
-    if (CaseStmt *Case = dyn_cast_or_null<CaseStmt>(Cursor->getAsStmt())) {
+    if (auto *Case = dyn_cast_or_null<CaseStmt>(Cursor->getAsStmt())) {
       auto LabelItems = Case->getCaseLabelItems();
       SourceLoc Loc;
       if (!LabelItems.empty())

Diff for: lib/Index/Index.cpp

@@ -726,7 +726,7 @@ bool IndexSwiftASTWalker::reportInheritedTypeRefs(ArrayRef<TypeLoc> Inherited, D
 
 bool IndexSwiftASTWalker::reportRelatedTypeRef(const TypeLoc &Ty, SymbolRoleSet Relations, Decl *Related) {
 
-  if (IdentTypeRepr *T = dyn_cast_or_null<IdentTypeRepr>(Ty.getTypeRepr())) {
+  if (auto *T = dyn_cast_or_null<IdentTypeRepr>(Ty.getTypeRepr())) {
     auto Comps = T->getComponentRange();
     SourceLoc IdLoc = Comps.back()->getIdLoc();
     NominalTypeDecl *NTD = nullptr;
@@ -845,7 +845,7 @@ NominalTypeDecl *
 IndexSwiftASTWalker::getTypeLocAsNominalTypeDecl(const TypeLoc &Ty) {
   if (Type T = Ty.getType())
     return T->getAnyNominal();
-  if (IdentTypeRepr *T = dyn_cast_or_null<IdentTypeRepr>(Ty.getTypeRepr())) {
+  if (auto *T = dyn_cast_or_null<IdentTypeRepr>(Ty.getTypeRepr())) {
     auto Comp = T->getComponentRange().back();
     if (auto NTD = dyn_cast_or_null<NominalTypeDecl>(Comp->getBoundDecl()))
       return NTD;

Diff for: lib/SILGen/RValue.cpp

@@ -29,7 +29,7 @@ using namespace Lowering;
 
 
 static unsigned getTupleSize(CanType t) {
-  if (TupleType *tt = dyn_cast<TupleType>(t))
+  if (auto tt = dyn_cast<TupleType>(t))
     return tt->getNumElements();
   return 1;
 }

Diff for: lib/SILOptimizer/IPO/GlobalPropertyOpt.cpp

@@ -122,7 +122,7 @@ class GlobalPropertyOpt {
   /// Returns true if the type is a tuple which contains at least one array
   /// (we don't check for arrays in nested tuples).
   bool isTupleWithArray(CanType type) {
-    if (TupleType *tuple = dyn_cast<TupleType>(type)) {
+    if (auto tuple = dyn_cast<TupleType>(type)) {
       for (Type subType : tuple->getElementTypes()) {
         if (CanType(subType).getNominalOrBoundGenericNominal() == ArrayType)
           return true;

Diff for: lib/SILOptimizer/Transforms/SILMem2Reg.cpp

@@ -537,7 +537,7 @@ StackAllocationPromoter::getLiveOutValue(BlockSet &PhiBlocks,
     // If there is a store (that must come after the phi), use its value.
     BlockToInstMap::iterator it = LastStoreInBlock.find(BB);
     if (it != LastStoreInBlock.end())
-      if (StoreInst *St = dyn_cast_or_null<StoreInst>(it->second)) {
+      if (auto *St = dyn_cast_or_null<StoreInst>(it->second)) {
         DEBUG(llvm::dbgs() << "*** Found Store def " << *St->getSrc());
         return St->getSrc();
       }

Diff for: lib/Sema/PCMacro.cpp

@@ -270,7 +270,7 @@ class Instrumenter : InstrumenterBase {
   }
 
   DoStmt *transformDoStmt(DoStmt *DS) {
-    if (BraceStmt *B = dyn_cast_or_null<BraceStmt>(DS->getBody())) {
+    if (auto *B = dyn_cast_or_null<BraceStmt>(DS->getBody())) {
       BraceStmt *NB = transformBraceStmt(B);
       if (NB != B) {
         DS->setBody(NB);
@@ -280,14 +280,14 @@ class Instrumenter : InstrumenterBase {
   }
 
   DoCatchStmt *transformDoCatchStmt(DoCatchStmt *DCS) {
-    if (BraceStmt *B = dyn_cast_or_null<BraceStmt>(DCS->getBody())) {
+    if (auto *B = dyn_cast_or_null<BraceStmt>(DCS->getBody())) {
       BraceStmt *NB = transformBraceStmt(B);
       if (NB != B) {
         DCS->setBody(NB);
       }
     }
     for (CatchStmt *C : DCS->getCatches()) {
-      if (BraceStmt *CB = dyn_cast_or_null<BraceStmt>(C->getBody())) {
+      if (auto *CB = dyn_cast_or_null<BraceStmt>(C->getBody())) {
         BraceStmt *NCB = transformBraceStmt(CB);
         if (NCB != CB) {
           C->setBody(NCB);

Diff for: lib/Sema/PlaygroundTransform.cpp

@@ -243,7 +243,7 @@ class Instrumenter : InstrumenterBase {
   }
 
   DoStmt *transformDoStmt(DoStmt *DS) {
-    if (BraceStmt *B = dyn_cast_or_null<BraceStmt>(DS->getBody())) {
+    if (auto *B = dyn_cast_or_null<BraceStmt>(DS->getBody())) {
       BraceStmt *NB = transformBraceStmt(B);
       if (NB != B) {
         DS->setBody(NB);
@@ -253,14 +253,14 @@ class Instrumenter : InstrumenterBase {
   }
 
   DoCatchStmt *transformDoCatchStmt(DoCatchStmt *DCS) {
-    if (BraceStmt *B = dyn_cast_or_null<BraceStmt>(DCS->getBody())) {
+    if (auto *B = dyn_cast_or_null<BraceStmt>(DCS->getBody())) {
       BraceStmt *NB = transformBraceStmt(B);
       if (NB != B) {
         DCS->setBody(NB);
       }
     }
     for (CatchStmt *C : DCS->getCatches()) {
-      if (BraceStmt *CB = dyn_cast_or_null<BraceStmt>(C->getBody())) {
+      if (auto *CB = dyn_cast_or_null<BraceStmt>(C->getBody())) {
         BraceStmt *NCB = transformBraceStmt(CB);
         if (NCB != CB) {
           C->setBody(NCB);