From d9d05fd0025138383555d5efc69bf461d513b8d8 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Mon, 8 Jun 2009 05:39:52 +0000
Subject: Add klee::createDummySolver, the dummy solver always fails.  - Useful
 as an alternative backend to STP for testing.

git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@73048 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Solver/Solver.cpp | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

(limited to 'lib/Solver')

diff --git a/lib/Solver/Solver.cpp b/lib/Solver/Solver.cpp
index 936f252d..98dcad0b 100644
--- a/lib/Solver/Solver.cpp
+++ b/lib/Solver/Solver.cpp
@@ -375,6 +375,41 @@ Solver *klee::createValidatingSolver(Solver *s, Solver *oracle) {
 
 /***/
 
+class DummySolverImpl : public SolverImpl {
+public: 
+  DummySolverImpl() {}
+  
+  bool computeValidity(const Query&, Solver::Validity &result) { 
+    ++stats::queries;
+    // FIXME: We should have stats::queriesFail;
+    return false; 
+  }
+  bool computeTruth(const Query&, bool &isValid) { 
+    ++stats::queries;
+    // FIXME: We should have stats::queriesFail;
+    return false; 
+  }
+  bool computeValue(const Query&, ref<Expr> &result) { 
+    ++stats::queries;
+    ++stats::queryCounterexamples;
+    return false; 
+  }
+  bool computeInitialValues(const Query&,
+                            const std::vector<const Array*> &objects,
+                            std::vector< std::vector<unsigned char> > &values,
+                            bool &hasSolution) { 
+    ++stats::queries;
+    ++stats::queryCounterexamples;
+    return false; 
+  }
+};
+
+Solver *klee::createDummySolver() {
+  return new Solver(new DummySolverImpl());
+}
+
+/***/
+
 class STPSolverImpl : public SolverImpl {
 private:
   /// The solver we are part of, for access to public information.
-- 
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