1 files changed, 9 insertions, 2 deletions
diff --git a/lib/Checker/AggExprVisitor.cpp b/lib/Checker/AggExprVisitor.cpp
index 343afec..6d472f4 100644
--- a/lib/Checker/AggExprVisitor.cpp
+++ b/lib/Checker/AggExprVisitor.cpp
@@ -18,6 +18,13 @@
 using namespace clang;
 
 namespace {
+/// AggExprVisitor is designed after AggExprEmitter of the CodeGen module.  It
+/// is used for evaluating exprs of C++ object type. Evaluating such exprs
+/// requires a destination pointer pointing to the object being evaluated
+/// into. Passing such a pointer around would pollute the Visit* interface of
+/// GRExprEngine. AggExprVisitor encapsulates code that goes through various
+/// cast and construct exprs (and others), and at the final point, dispatches
+/// back to the GRExprEngine to let the real evaluation logic happen.
 class AggExprVisitor : public StmtVisitor<AggExprVisitor> {
   SVal DestPtr;
   ExplodedNode *Pred;
@@ -38,8 +45,8 @@ void AggExprVisitor::VisitCastExpr(CastExpr *E) {
   switch (E->getCastKind()) {
   default: 
     assert(0 && "Unhandled cast kind");
-  case CastExpr::CK_NoOp:
-  case CastExpr::CK_ConstructorConversion:
+  case CK_NoOp:
+  case CK_ConstructorConversion:
     Visit(E->getSubExpr());
     break;
   }