Added method "canReasonAbout" to ConstraintManager. This method returns true if

a ConstraintManager can usefully reason about the given SVal.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66624 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/clang/Analysis/PathSensitive/ConstraintManager.h b/include/clang/Analysis/PathSensitive/ConstraintManager.h
index f526d7819e..32e5bb0cb3 100644
--- a/include/clang/Analysis/PathSensitive/ConstraintManager.h
+++ b/include/clang/Analysis/PathSensitive/ConstraintManager.h
@@ -51,6 +51,13 @@ public:
                      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);