Import Clang, at r72732.

1 files changed, 67 insertions, 0 deletions

diff --git a/include/clang/Analysis/PathSensitive/ConstraintManager.h b/include/clang/Analysis/PathSensitive/ConstraintManager.h
new file mode 100644
index 0000000..c8e5e85
--- /dev/null
+++ b/include/clang/Analysis/PathSensitive/ConstraintManager.h
@@ -0,0 +1,67 @@
+//== ConstraintManager.h - Constraints on symbolic values.-------*- C++ -*--==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defined the interface to manage constraints on symbolic values.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_ANALYSIS_CONSTRAINT_MANAGER_H
+#define LLVM_CLANG_ANALYSIS_CONSTRAINT_MANAGER_H
+
+// FIXME: Typedef LiveSymbolsTy/DeadSymbolsTy at a more appropriate place.
+#include "clang/Analysis/PathSensitive/Store.h"
+
+namespace llvm {
+class APSInt;
+}
+
+namespace clang {
+
+class GRState;
+class GRStateManager;
+class SVal;
+
+class ConstraintManager {
+public:
+  virtual ~ConstraintManager();
+  virtual const GRState* Assume(const GRState* St, SVal Cond, 
+                                bool Assumption, bool& isFeasible) = 0;
+
+  virtual const GRState* AssumeInBound(const GRState* St, SVal Idx, 
+                                       SVal UpperBound, bool Assumption,
+                                       bool& isFeasible) = 0;
+
+  virtual const llvm::APSInt* getSymVal(const GRState* St, SymbolRef sym)
+    const = 0;
+
+  virtual bool isEqual(const GRState* St, SymbolRef sym, 
+                       const llvm::APSInt& V) const = 0;
+
+  virtual const GRState* RemoveDeadBindings(const GRState* St,
+                                            SymbolReaper& SymReaper) = 0;
+
+  virtual void print(const GRState* St, std::ostream& Out, 
+                     const char* nl, const char *sep) = 0;
+
+  virtual void EndPath(const GRState* St) {}
+  
+  /// canReasonAbout - Not all ConstraintManagers can accurately reason about
+  ///  all SVal values.  This method returns true if the ConstraintManager can
+  ///  reasonably handle a given SVal value.  This is typically queried by
+  ///  GRExprEngine to determine if the value should be replaced with a
+  ///  conjured symbolic value in order to recover some precision.
+  virtual bool canReasonAbout(SVal X) const = 0;
+};
+
+ConstraintManager* CreateBasicConstraintManager(GRStateManager& statemgr);
+ConstraintManager* CreateRangeConstraintManager(GRStateManager& statemgr);
+
+} // end clang namespace
+
+#endif