[C++11] Replacing EnumDecl iterators enumerator_begin() and enumerator_end() with iterator_range enumerators(). Updating all of the usages of the iterators with range-based for loops.

llvm-svn: 203353

clang/include/clang/AST/Decl.h

@@ -2899,6 +2899,11 @@ public:
   // enumerator_iterator - Iterates through the enumerators of this
   // enumeration.
   typedef specific_decl_iterator<EnumConstantDecl> enumerator_iterator;
+  typedef specific_decl_range<EnumConstantDecl> enumerator_range;
+
+  enumerator_range enumerators() const {
+    return enumerator_range(enumerator_begin(), enumerator_end());
+  }
 
   enumerator_iterator enumerator_begin() const {
     const EnumDecl *E = getDefinition();

clang/include/clang/AST/DeclBase.h

@@ -1396,6 +1396,10 @@ public:
     }
   };
 
+  template <typename SpecificDecl>
+  using specific_decl_range =
+      llvm::iterator_range<specific_decl_iterator<SpecificDecl>>;
+
   /// \brief Iterates over a filtered subrange of declarations stored
   /// in a DeclContext.
   ///

clang/lib/ARCMigrate/ObjCMT.cpp

@@ -667,9 +667,7 @@ static bool UseNSOptionsMacro(Preprocessor &PP, ASTContext &Ctx,
   bool PowerOfTwo = true;
   bool AllHexdecimalEnumerator = true;
   uint64_t MaxPowerOfTwoVal = 0;
-  for (EnumDecl::enumerator_iterator EI = EnumDcl->enumerator_begin(),
-       EE = EnumDcl->enumerator_end(); EI != EE; ++EI) {
-    EnumConstantDecl *Enumerator = (*EI);
+  for (auto Enumerator : EnumDcl->enumerators()) {
     const Expr *InitExpr = Enumerator->getInitExpr();
     if (!InitExpr) {
       PowerOfTwo = false;

clang/lib/CodeGen/CGDebugInfo.cpp

@@ -1917,9 +1917,7 @@ llvm::DIType CGDebugInfo::CreateEnumType(const EnumType *Ty) {
   // Create DIEnumerator elements for each enumerator.
   SmallVector<llvm::Value *, 16> Enumerators;
   ED = ED->getDefinition();
-  for (EnumDecl::enumerator_iterator
-         Enum = ED->enumerator_begin(), EnumEnd = ED->enumerator_end();
-       Enum != EnumEnd; ++Enum) {
+  for (const auto *Enum : ED->enumerators()) {
     Enumerators.push_back(
       DBuilder.createEnumerator(Enum->getName(),
                                 Enum->getInitVal().getSExtValue()));

clang/lib/Frontend/ASTUnit.cpp

@@ -817,10 +817,9 @@ void AddTopLevelDeclarationToHash(Decl *D, unsigned &Hash) {
       // For an unscoped enum include the enumerators in the hash since they
       // enter the top-level namespace.
       if (!EnumD->isScoped()) {
-        for (EnumDecl::enumerator_iterator EI = EnumD->enumerator_begin(),
-               EE = EnumD->enumerator_end(); EI != EE; ++EI) {
-          if ((*EI)->getIdentifier())
-            Hash = llvm::HashString((*EI)->getIdentifier()->getName(), Hash);
+        for (const auto *EI : EnumD->enumerators()) {
+          if (EI->getIdentifier())
+            Hash = llvm::HashString(EI->getIdentifier()->getName(), Hash);
         }
       }
     }

clang/lib/Rewrite/Frontend/RewriteModernObjC.cpp

@@ -3809,8 +3809,7 @@ bool RewriteModernObjC::RewriteObjCFieldDeclType(QualType &Type,
       }
       
       Result += " {\n";
-      for (EnumDecl::enumerator_iterator EC = ED->enumerator_begin(),
-           ECEnd = ED->enumerator_end(); EC != ECEnd; ++EC) {
+      for (const auto *EC : ED->enumerators()) {
         Result += "\t"; Result += EC->getName(); Result += " = ";
         llvm::APSInt Val = EC->getInitVal();
         Result += Val.toString(10);

clang/lib/Sema/SemaCodeComplete.cpp

@@ -3795,13 +3795,11 @@ void Sema::CodeCompleteCase(Scope *S) {
                         CodeCompleter->getCodeCompletionTUInfo(),
                         CodeCompletionContext::CCC_Expression);
   Results.EnterNewScope();
-  for (EnumDecl::enumerator_iterator E = Enum->enumerator_begin(),
-                                  EEnd = Enum->enumerator_end();
-       E != EEnd; ++E) {
-    if (EnumeratorsSeen.count(*E))
+  for (auto *E : Enum->enumerators()) {
+    if (EnumeratorsSeen.count(E))
       continue;
     
-    CodeCompletionResult R(*E, CCP_EnumInCase, Qualifier);
+    CodeCompletionResult R(E, CCP_EnumInCase, Qualifier);
     Results.AddResult(R, CurContext, 0, false);
   }
   Results.ExitScope();

clang/lib/Sema/SemaDecl.cpp

@@ -9630,10 +9630,9 @@ Decl *Sema::ActOnStartOfFunctionDef(Scope *FnBodyScope, Decl *D) {
 
       // Similarly, dive into enums and fish their constants out, making them
       // accessible in this scope.
-      if (EnumDecl *ED = dyn_cast<EnumDecl>(D)) {
-        for (EnumDecl::enumerator_iterator EI = ED->enumerator_begin(),
-               EE = ED->enumerator_end(); EI != EE; ++EI)
-          PushOnScopeChains(*EI, FnBodyScope, /*AddToContext=*/false);
+      if (auto *ED = dyn_cast<EnumDecl>(D)) {
+        for (auto *EI : ED->enumerators())
+          PushOnScopeChains(EI, FnBodyScope, /*AddToContext=*/false);
       }
     }
   }

clang/lib/Sema/SemaStmt.cpp

@@ -1015,11 +1015,10 @@ Sema::ActOnFinishSwitchStmt(SourceLocation SwitchLoc, Stmt *Switch,
 
       // Gather all enum values, set their type and sort them,
       // allowing easier comparison with CaseVals.
-      for (EnumDecl::enumerator_iterator EDI = ED->enumerator_begin();
-           EDI != ED->enumerator_end(); ++EDI) {
+      for (auto *EDI : ED->enumerators()) {
         llvm::APSInt Val = EDI->getInitVal();
         AdjustAPSInt(Val, CondWidth, CondIsSigned);
-        EnumVals.push_back(std::make_pair(Val, *EDI));
+        EnumVals.push_back(std::make_pair(Val, EDI));
       }
       std::stable_sort(EnumVals.begin(), EnumVals.end(), CmpEnumVals);
       EnumValsTy::iterator EIend =
@@ -1166,11 +1165,10 @@ Sema::DiagnoseAssignmentEnum(QualType DstType, QualType SrcType,
 
         // Gather all enum values, set their type and sort them,
         // allowing easier comparison with rhs constant.
-        for (EnumDecl::enumerator_iterator EDI = ED->enumerator_begin();
-             EDI != ED->enumerator_end(); ++EDI) {
+        for (auto *EDI : ED->enumerators()) {
           llvm::APSInt Val = EDI->getInitVal();
           AdjustAPSInt(Val, DstWidth, DstIsSigned);
-          EnumVals.push_back(std::make_pair(Val, *EDI));
+          EnumVals.push_back(std::make_pair(Val, EDI));
         }
         if (EnumVals.empty())
           return;

clang/lib/Sema/SemaTemplateInstantiateDecl.cpp

@@ -733,9 +733,7 @@ void TemplateDeclInstantiator::InstantiateEnumDefinition(
   SmallVector<Decl*, 4> Enumerators;
 
   EnumConstantDecl *LastEnumConst = 0;
-  for (EnumDecl::enumerator_iterator EC = Pattern->enumerator_begin(),
-         ECEnd = Pattern->enumerator_end();
-       EC != ECEnd; ++EC) {
+  for (auto *EC : Pattern->enumerators()) {
     // The specified value for the enumerator.
     ExprResult Value = SemaRef.Owned((Expr *)0);
     if (Expr *UninstValue = EC->getInitExpr()) {
@@ -765,7 +763,7 @@ void TemplateDeclInstantiator::InstantiateEnumDefinition(
     }
 
     if (EnumConst) {
-      SemaRef.InstantiateAttrs(TemplateArgs, *EC, EnumConst);
+      SemaRef.InstantiateAttrs(TemplateArgs, EC, EnumConst);
 
       EnumConst->setAccess(Enum->getAccess());
       Enum->addDecl(EnumConst);
@@ -776,7 +774,7 @@ void TemplateDeclInstantiator::InstantiateEnumDefinition(
           !Enum->isScoped()) {
         // If the enumeration is within a function or method, record the enum
         // constant as a local.
-        SemaRef.CurrentInstantiationScope->InstantiatedLocal(*EC, EnumConst);
+        SemaRef.CurrentInstantiationScope->InstantiatedLocal(EC, EnumConst);
       }
     }
   }