Use None rather than Optional<T>() where possible.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175705 91177308-0d34-0410-b5e6-96231b3b80d8

5 files changed, 15 insertions, 15 deletions

diff --git a/lib/AST/ASTImporter.cpp b/lib/AST/ASTImporter.cpp
index 98ef2378ab..bdf2bbc7e5 100644
--- a/lib/AST/ASTImporter.cpp
+++ b/lib/AST/ASTImporter.cpp
@@ -908,7 +908,7 @@ static Optional<unsigned> findAnonymousStructOrUnionIndex(RecordDecl *Anon) {
 
   RecordDecl *Owner = dyn_cast<RecordDecl>(Anon->getDeclContext());
   if (!Owner)
-    return Optional<unsigned>();
+    return None;
 
   unsigned Index = 0;
   for (DeclContext::decl_iterator D = Owner->noload_decls_begin(),
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 3ce2f44d2f..312426134f 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -180,7 +180,7 @@ static Optional<Visibility> getVisibilityOf(const NamedDecl *D,
         return DefaultVisibility;
   }
 
-  return Optional<Visibility>();
+  return None;
 }
 
 static LinkageInfo getLVForType(QualType T) {
@@ -893,7 +893,7 @@ NamedDecl::getExplicitVisibility(ExplicitVisibilityKind kind) const {
         return getVisibilityOf(InstantiatedFrom, kind);
     }
 
-    return Optional<Visibility>();
+    return None;
   }
   // Use the most recent declaration of a function, and also handle
   // function template specializations.
@@ -914,7 +914,7 @@ NamedDecl::getExplicitVisibility(ExplicitVisibilityKind kind) const {
     if (InstantiatedFrom)
       return getVisibilityOf(InstantiatedFrom, kind);
 
-    return Optional<Visibility>();
+    return None;
   }
 
   // Otherwise, just check the declaration itself first.
@@ -941,7 +941,7 @@ NamedDecl::getExplicitVisibility(ExplicitVisibilityKind kind) const {
       return getVisibilityOf(InstantiatedFrom, kind);
   }
 
-  return Optional<Visibility>();
+  return None;
 }
 
 static LinkageInfo getLVForLocalDecl(const NamedDecl *D,
diff --git a/lib/AST/DeclTemplate.cpp b/lib/AST/DeclTemplate.cpp
index 49ef5a39a6..5e25536134 100644
--- a/lib/AST/DeclTemplate.cpp
+++ b/lib/AST/DeclTemplate.cpp
@@ -184,7 +184,7 @@ static void GenerateInjectedTemplateArgs(ASTContext &Context,
     if (TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(*Param)) {
       QualType ArgType = Context.getTypeDeclType(TTP);
       if (TTP->isParameterPack())
-        ArgType = Context.getPackExpansionType(ArgType, Optional<unsigned>());
+        ArgType = Context.getPackExpansionType(ArgType, None);
 
       Arg = TemplateArgument(ArgType);
     } else if (NonTypeTemplateParmDecl *NTTP =
@@ -195,8 +195,8 @@ static void GenerateInjectedTemplateArgs(ASTContext &Context,
                                           NTTP->getLocation());
       
       if (NTTP->isParameterPack())
-        E = new (Context) PackExpansionExpr(
-            Context.DependentTy, E, NTTP->getLocation(), Optional<unsigned>());
+        E = new (Context) PackExpansionExpr(Context.DependentTy, E,
+                                            NTTP->getLocation(), None);
       Arg = TemplateArgument(E);
     } else {
       TemplateTemplateParmDecl *TTP = cast<TemplateTemplateParmDecl>(*Param);
diff --git a/lib/AST/NSAPI.cpp b/lib/AST/NSAPI.cpp
index b06769e43c..a862630bbf 100644
--- a/lib/AST/NSAPI.cpp
+++ b/lib/AST/NSAPI.cpp
@@ -75,7 +75,7 @@ NSAPI::getNSStringMethodKind(Selector Sel) const {
       return MK;
   }
 
-  return Optional<NSStringMethodKind>();
+  return None;
 }
 
 Selector NSAPI::getNSArraySelector(NSArrayMethodKind MK) const {
@@ -133,7 +133,7 @@ Optional<NSAPI::NSArrayMethodKind> NSAPI::getNSArrayMethodKind(Selector Sel) {
       return MK;
   }
 
-  return Optional<NSArrayMethodKind>();
+  return None;
 }
 
 Selector NSAPI::getNSDictionarySelector(
@@ -219,7 +219,7 @@ NSAPI::getNSDictionaryMethodKind(Selector Sel) {
       return MK;
   }
 
-  return Optional<NSDictionaryMethodKind>();
+  return None;
 }
 
 Selector NSAPI::getNSNumberLiteralSelector(NSNumberLiteralMethodKind MK,
@@ -282,14 +282,14 @@ NSAPI::getNSNumberLiteralMethodKind(Selector Sel) const {
       return MK;
   }
 
-  return Optional<NSNumberLiteralMethodKind>();
+  return None;
 }
 
 Optional<NSAPI::NSNumberLiteralMethodKind>
 NSAPI::getNSNumberFactoryMethodKind(QualType T) const {
   const BuiltinType *BT = T->getAs<BuiltinType>();
   if (!BT)
-    return Optional<NSAPI::NSNumberLiteralMethodKind>();
+    return None;
 
   const TypedefType *TDT = T->getAs<TypedefType>();
   if (TDT) {
@@ -363,7 +363,7 @@ NSAPI::getNSNumberFactoryMethodKind(QualType T) const {
     break;
   }
   
-  return Optional<NSAPI::NSNumberLiteralMethodKind>();
+  return None;
 }
 
 /// \brief Returns true if \param T is a typedef of "BOOL" in objective-c.
diff --git a/lib/AST/TemplateBase.cpp b/lib/AST/TemplateBase.cpp
index 520ca2587d..2b50681345 100644
--- a/lib/AST/TemplateBase.cpp
+++ b/lib/AST/TemplateBase.cpp
@@ -229,7 +229,7 @@ Optional<unsigned> TemplateArgument::getNumTemplateExpansions() const {
   if (TemplateArg.NumExpansions)
     return TemplateArg.NumExpansions - 1;
   
-  return Optional<unsigned>();
+  return None; 
 }
 
 void TemplateArgument::Profile(llvm::FoldingSetNodeID &ID,