[C++11] Replacing DeclContext iterators using_directives_begin() and using_directives_end() with iterator_range using_directives(). Updating all of the usages of the iterators with range-based for loops, and removing the no-longer-needed iterator versions. Also used as an opportunity to normalize the name from getUsingDirectives() to using_directives().

llvm-svn: 204061

3 files changed, 13 insertions, 27 deletions

diff --git a/clang/include/clang/AST/DeclBase.h b/clang/include/clang/AST/DeclBase.h
index 6dc5598a857..a08f1c50a02 100644
--- a/clang/include/clang/AST/DeclBase.h
+++ b/clang/include/clang/AST/DeclBase.h
@@ -1592,21 +1592,9 @@ public:
   all_lookups_iterator noload_lookups_begin() const;
   all_lookups_iterator noload_lookups_end() const;
 
-  /// udir_iterator - Iterates through the using-directives stored
-  /// within this context.
-  typedef UsingDirectiveDecl * const * udir_iterator;
-
-  typedef llvm::iterator_range<udir_iterator> udir_range;
-
-  udir_range getUsingDirectives() const;
+  typedef llvm::iterator_range<UsingDirectiveDecl * const *> udir_range;
 
-  udir_iterator using_directives_begin() const {
-    return getUsingDirectives().begin();
-  }
-
-  udir_iterator using_directives_end() const {
-    return getUsingDirectives().end();
-  }
+  udir_range using_directives() const;
 
   // These are all defined in DependentDiagnostic.h.
   class ddiag_iterator;
diff --git a/clang/lib/AST/DeclBase.cpp b/clang/lib/AST/DeclBase.cpp
index c95a64aa2e9..d4c8235f8a8 100644
--- a/clang/lib/AST/DeclBase.cpp
+++ b/clang/lib/AST/DeclBase.cpp
@@ -1523,13 +1523,13 @@ void DeclContext::makeDeclVisibleInContextImpl(NamedDecl *D, bool Internal) {
 
 /// Returns iterator range [First, Last) of UsingDirectiveDecls stored within
 /// this context.
-DeclContext::udir_range
-DeclContext::getUsingDirectives() const {
+DeclContext::udir_range DeclContext::using_directives() const {
   // FIXME: Use something more efficient than normal lookup for using
   // directives. In C++, using directives are looked up more than anything else.
   lookup_const_result Result = lookup(UsingDirectiveDecl::getName());
-  return udir_range(reinterpret_cast<udir_iterator>(Result.begin()),
-                             reinterpret_cast<udir_iterator>(Result.end()));
+  return udir_range(
+      reinterpret_cast<UsingDirectiveDecl *const *>(Result.begin()),
+      reinterpret_cast<UsingDirectiveDecl *const *>(Result.end()));
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/clang/lib/Sema/SemaLookup.cpp b/clang/lib/Sema/SemaLookup.cpp
index 29671aa65d4..42c9acbdd80 100644
--- a/clang/lib/Sema/SemaLookup.cpp
+++ b/clang/lib/Sema/SemaLookup.cpp
@@ -151,7 +151,7 @@ namespace {
     void addUsingDirectives(DeclContext *DC, DeclContext *EffectiveDC) {
       SmallVector<DeclContext*,4> queue;
       while (true) {
-        for (auto UD : DC->getUsingDirectives()) {
+        for (auto UD : DC->using_directives()) {
           DeclContext *NS = UD->getNominatedNamespace();
           if (visited.insert(NS)) {
             addUsingDirective(UD, EffectiveDC);
@@ -1448,10 +1448,8 @@ static bool LookupQualifiedNameInUsingDirectives(Sema &S, LookupResult &R,
                                                  DeclContext *StartDC) {
   assert(StartDC->isFileContext() && "start context is not a file context");
 
-  DeclContext::udir_iterator I = StartDC->using_directives_begin();
-  DeclContext::udir_iterator E = StartDC->using_directives_end();
-
-  if (I == E) return false;
+  DeclContext::udir_range UsingDirectives = StartDC->using_directives();
+  if (UsingDirectives.begin() == UsingDirectives.end()) return false;
 
   // We have at least added all these contexts to the queue.
   llvm::SmallPtrSet<DeclContext*, 8> Visited;
@@ -1463,8 +1461,8 @@ static bool LookupQualifiedNameInUsingDirectives(Sema &S, LookupResult &R,
 
   // We have already looked into the initial namespace; seed the queue
   // with its using-children.
-  for (; I != E; ++I) {
-    NamespaceDecl *ND = (*I)->getNominatedNamespace()->getOriginalNamespace();
+  for (auto *I : UsingDirectives) {
+    NamespaceDecl *ND = I->getNominatedNamespace()->getOriginalNamespace();
     if (Visited.insert(ND))
       Queue.push_back(ND);
   }
@@ -1511,7 +1509,7 @@ static bool LookupQualifiedNameInUsingDirectives(Sema &S, LookupResult &R,
       continue;
     }
 
-    for (auto I : ND->getUsingDirectives()) {
+    for (auto I : ND->using_directives()) {
       NamespaceDecl *Nom = I->getNominatedNamespace();
       if (Visited.insert(Nom))
         Queue.push_back(Nom);
@@ -3074,7 +3072,7 @@ static void LookupVisibleDecls(DeclContext *Ctx, LookupResult &Result,
   // Traverse using directives for qualified name lookup.
   if (QualifiedNameLookup) {
     ShadowContextRAII Shadow(Visited);
-    for (auto I : Ctx->getUsingDirectives()) {
+    for (auto I : Ctx->using_directives()) {
       LookupVisibleDecls(I->getNominatedNamespace(), Result,
                          QualifiedNameLookup, InBaseClass, Consumer, Visited);
     }