Added some comments to GRExprEngine.  Reorder some of the method definitions
to start logically organizing them.

Added initial plug-in transfer function support for Objective-C message expressions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49752 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/GRSimpleVals.h b/lib/Analysis/GRSimpleVals.h
index cd6016b..5adf895 100644
--- a/lib/Analysis/GRSimpleVals.h
+++ b/lib/Analysis/GRSimpleVals.h
@@ -63,6 +63,14 @@
                         CallExpr* CE, LVal L,
                         ExplodedNode<ValueState>* Pred);
   
+  virtual void EvalObjCMessageExpr(ExplodedNodeSet<ValueState>& Dst,
+                                   GRExprEngine& Engine,
+                                   GRStmtNodeBuilder<ValueState>& Builder,
+                                   ObjCMessageExpr* ME,
+                                   ExplodedNode<ValueState>* Pred);
+  
+  
+  
   static void GeneratePathDiagnostic(PathDiagnostic& PD, ASTContext& Ctx,
                                      ExplodedNode<ValueState>* N);