1 files changed, 123 insertions, 0 deletions
diff --git a/include/clang/Analysis/PathSensitive/GRTransferFuncs.h b/include/clang/Analysis/PathSensitive/GRTransferFuncs.h
new file mode 100644
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+++ b/include/clang/Analysis/PathSensitive/GRTransferFuncs.h
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+//== GRTransferFuncs.h - Path-Sens. Transfer Functions Interface -*- C++ -*--=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines GRTransferFuncs, which provides a base-class that
+//  defines an interface for transfer functions used by GRExprEngine.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_ANALYSIS_GRTF
+#define LLVM_CLANG_ANALYSIS_GRTF
+
+#include "clang/Analysis/PathSensitive/SVals.h"
+#include "clang/Analysis/PathSensitive/GRCoreEngine.h"
+#include "clang/Analysis/PathSensitive/GRState.h"
+#include <vector>
+
+namespace clang {
+  
+  class GRExprEngine;
+  class BugReporter;
+  class ObjCMessageExpr;
+  class GRStmtNodeBuilderRef;
+  
+class GRTransferFuncs {
+  friend class GRExprEngine;  
+protected:
+  virtual SVal DetermEvalBinOpNN(GRExprEngine& Eng,
+                                 BinaryOperator::Opcode Op,
+                                 NonLoc L, NonLoc R, QualType T) {
+    return UnknownVal();
+  }
+  
+public:
+  GRTransferFuncs() {}
+  virtual ~GRTransferFuncs() {}
+  
+  virtual void RegisterPrinters(std::vector<GRState::Printer*>& Printers) {}
+  virtual void RegisterChecks(BugReporter& BR) {}
+  
+  // Casts.
+  
+  virtual SVal EvalCast(GRExprEngine& Engine, NonLoc V, QualType CastT) =0;  
+  virtual SVal EvalCast(GRExprEngine& Engine, Loc V, QualType CastT) = 0;
+
+  // Unary Operators.
+  
+  virtual SVal EvalMinus(GRExprEngine& Engine, UnaryOperator* U, NonLoc X) = 0;
+
+  virtual SVal EvalComplement(GRExprEngine& Engine, NonLoc X) = 0;
+
+  // Binary Operators.
+  // FIXME: We're moving back towards using GREXprEngine directly.  No need
+  // for OStates
+  virtual void EvalBinOpNN(GRStateSet& OStates, GRExprEngine& Eng,
+                           const GRState* St, Expr* Ex,
+                           BinaryOperator::Opcode Op, NonLoc L, NonLoc R,
+                           QualType T);
+  
+  virtual SVal EvalBinOp(GRExprEngine& Engine, BinaryOperator::Opcode Op,
+                         Loc L, Loc R) = 0;
+  
+  // Pointer arithmetic.
+  
+  virtual SVal EvalBinOp(GRExprEngine& Engine, const GRState *state,
+                         BinaryOperator::Opcode Op, Loc L, NonLoc R) = 0;
+  
+  // Calls.
+  
+  virtual void EvalCall(ExplodedNodeSet<GRState>& Dst,
+                        GRExprEngine& Engine,
+                        GRStmtNodeBuilder<GRState>& Builder,
+                        CallExpr* CE, SVal L,
+                        ExplodedNode<GRState>* Pred) {}
+  
+  virtual void EvalObjCMessageExpr(ExplodedNodeSet<GRState>& Dst,
+                                   GRExprEngine& Engine,
+                                   GRStmtNodeBuilder<GRState>& Builder,
+                                   ObjCMessageExpr* ME,
+                                   ExplodedNode<GRState>* Pred) {}
+  
+  // Stores.
+  
+  virtual void EvalBind(GRStmtNodeBuilderRef& B, SVal location, SVal val) {}
+  
+  // End-of-path and dead symbol notification.
+  
+  virtual void EvalEndPath(GRExprEngine& Engine,
+                           GREndPathNodeBuilder<GRState>& Builder) {}
+  
+  
+  virtual void EvalDeadSymbols(ExplodedNodeSet<GRState>& Dst,
+                               GRExprEngine& Engine,
+                               GRStmtNodeBuilder<GRState>& Builder,
+                               ExplodedNode<GRState>* Pred,
+                               Stmt* S, const GRState* state,
+                               SymbolReaper& SymReaper) {}
+  
+  // Return statements.  
+  virtual void EvalReturn(ExplodedNodeSet<GRState>& Dst,
+                          GRExprEngine& Engine,
+                          GRStmtNodeBuilder<GRState>& Builder,
+                          ReturnStmt* S,
+                          ExplodedNode<GRState>* Pred) {}
+
+  // Assumptions.
+  
+  virtual const GRState* EvalAssume(GRStateManager& VMgr,
+                                       const GRState* St,
+                                       SVal Cond, bool Assumption,
+                                       bool& isFeasible) {
+    return St;
+  }
+};
+  
+} // end clang namespace
+
+#endif