[AST] Introduce GenericSelectionExpr::Association

Introduce a new class GenericSelectionExpr::Association which bundle together
an association expression and its TypeSourceInfo.

An iterator GenericSelectionExpr::AssociationIterator is additionally added to
make it possible to iterate over ranges of Associations. This iterator is a
kind of proxy iterator which abstract over how exactly the expressions and the
TypeSourceInfos are stored.

Differential Revision: https://reviews.llvm.org/D57106

Reviewed By: aaron.ballman

Reviewers: aaron.ballman, steveire, dblaikie, mclow.lists
llvm-svn: 352369

1 files changed, 5 insertions, 5 deletions

diff --git a/clang/lib/AST/ASTDumper.cpp b/clang/lib/AST/ASTDumper.cpp
index b91dab5aa38..5c99dab356f 100644
--- a/clang/lib/AST/ASTDumper.cpp
+++ b/clang/lib/AST/ASTDumper.cpp
@@ -1462,21 +1462,21 @@ void ASTDumper::VisitGenericSelectionExpr(const GenericSelectionExpr *E) {
   dumpStmt(E->getControllingExpr());
   dumpTypeAsChild(E->getControllingExpr()->getType()); // FIXME: remove
 
-  for (unsigned I = 0, N = E->getNumAssocs(); I != N; ++I) {
+  for (const auto &Assoc : E->associations()) {
     dumpChild([=] {
-      if (const TypeSourceInfo *TSI = E->getAssocTypeSourceInfo(I)) {
+      if (const TypeSourceInfo *TSI = Assoc.getTypeSourceInfo()) {
         OS << "case ";
         NodeDumper.dumpType(TSI->getType());
       } else {
         OS << "default";
       }
 
-      if (!E->isResultDependent() && E->getResultIndex() == I)
+      if (Assoc.isSelected())
         OS << " selected";
 
-      if (const TypeSourceInfo *TSI = E->getAssocTypeSourceInfo(I))
+      if (const TypeSourceInfo *TSI = Assoc.getTypeSourceInfo())
         dumpTypeAsChild(TSI->getType());
-      dumpStmt(E->getAssocExpr(I));
+      dumpStmt(Assoc.getAssociationExpr());
     });
   }
 }