commit 97ed4f68f5dba3e21e7a490ef0f9ffd3bfead7f8
author Ted Kremenek <kremenek@apple.com> Fri Oct 17 00:03:18 2008 +0000
committer Ted Kremenek <kremenek@apple.com> Fri Oct 17 00:03:18 2008 +0000
tree f3a66afc6ddebc3798f677f7934921cc95644c77
parent c6f7345e44e079f373d6bdecaa06c7e06574dc27

Add transfer function support for ObjCIvarRefExpr.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57654 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/BasicStore.cpp

diff --git a/lib/Analysis/BasicStore.cpp b/lib/Analysis/BasicStore.cpp
index f97f8b2..15a20c8 100644
--- a/lib/Analysis/BasicStore.cpp
+++ b/lib/Analysis/BasicStore.cpp
@@ -48,6 +48,7 @@
   }
 
   virtual RVal getLValue(const GRState* St, const Expr* Ex);
+  virtual RVal getLValue(const GRState* St, const ObjCIvarDecl* D, RVal Base);
   
   virtual Store
   RemoveDeadBindings(Store store, Stmt* Loc, const LiveVariables& Live,
@@ -154,6 +155,11 @@
   return UnknownVal();
 }
 
+RVal BasicStoreManager::getLValue(const GRState* St, const ObjCIvarDecl* D,
+                                  RVal Base) {
+  return UnknownVal();  
+}
+  
 Store BasicStoreManager::SetRVal(Store store, LVal LV, RVal V) {    
   switch (LV.getSubKind()) {      
     case lval::MemRegionKind: {

lib/Analysis/GRExprEngine.cpp

diff --git a/lib/Analysis/GRExprEngine.cpp b/lib/Analysis/GRExprEngine.cpp
index 2d24134..f974dfc 100644
--- a/lib/Analysis/GRExprEngine.cpp
+++ b/lib/Analysis/GRExprEngine.cpp
@@ -350,10 +350,13 @@
       break;
     }
       
-    case Stmt::MemberExprClass: {
+    case Stmt::MemberExprClass:
       VisitMemberExpr(cast<MemberExpr>(S), Pred, Dst, false);
       break;
-    }
+      
+    case Stmt::ObjCIvarRefExprClass:
+      VisitObjCIvarRefExpr(cast<ObjCIvarRefExpr>(S), Pred, Dst, false);
+      break;
       
     case Stmt::ObjCMessageExprClass: {
       VisitObjCMessageExpr(cast<ObjCMessageExpr>(S), Pred, Dst);
@@ -417,6 +420,10 @@
       VisitDeclRefExpr(cast<DeclRefExpr>(Ex), Pred, Dst, true);
       return;
       
+    case Stmt::ObjCIvarRefExprClass:
+      VisitObjCIvarRefExpr(cast<ObjCIvarRefExpr>(Ex), Pred, Dst, true);
+      return;
+      
     case Stmt::UnaryOperatorClass:
       VisitUnaryOperator(cast<UnaryOperator>(Ex), Pred, Dst, true);
       return;
@@ -1223,6 +1230,30 @@
 }
 
 //===----------------------------------------------------------------------===//
+// Transfer function: Objective-C ivar references.
+//===----------------------------------------------------------------------===//
+
+void GRExprEngine::VisitObjCIvarRefExpr(ObjCIvarRefExpr* Ex,
+                                            NodeTy* Pred, NodeSet& Dst,
+                                            bool asLValue) {
+  
+  Expr* Base = cast<Expr>(Ex->getBase());
+  NodeSet Tmp;
+  Visit(Base, Pred, Tmp);
+  
+  for (NodeSet::iterator I=Tmp.begin(), E=Tmp.end(); I!=E; ++I) {
+    const GRState* St = GetState(*I);
+    RVal BaseVal = GetRVal(St, Base);
+    RVal location = StateMgr.GetLValue(St, Ex->getDecl(), BaseVal);
+    
+    if (asLValue)
+      MakeNode(Dst, Ex, *I, SetRVal(St, Ex, location));
+    else
+      EvalLoad(Dst, Ex, *I, St, location);
+  }
+}
+
+//===----------------------------------------------------------------------===//
 // Transfer function: Objective-C message expressions.
 //===----------------------------------------------------------------------===//