Add `AssignmentValidatingSolver`. It's purpose is to check any computed

assignments against the corresponding `Query` object and check the
assignment evaluates correctly.

This can be switched on using `-debug-assignment-validating-solver`
on the command line.

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/Expr/Assigment.cpp b/lib/Expr/Assigment.cpp
index 635362d4..d788785a 100644
--- a/lib/Expr/Assigment.cpp
+++ b/lib/Expr/Assigment.cpp
@@ -22,4 +22,21 @@ void Assignment::dump() {
     llvm::errs() << "]\n";
   }
 }
+
+void Assignment::createConstraintsFromAssignment(
+    std::vector<ref<Expr> > &out) const {
+  assert(out.size() == 0 && "out should be empty");
+  for (bindings_ty::const_iterator it = bindings.begin(), ie = bindings.end();
+       it != ie; ++it) {
+    const Array *array = it->first;
+    const std::vector<unsigned char> &values = it->second;
+    for (unsigned arrayIndex = 0; arrayIndex < array->size; ++arrayIndex) {
+      unsigned char value = values[arrayIndex];
+      out.push_back(EqExpr::create(
+          ReadExpr::create(UpdateList(array, 0),
+                           ConstantExpr::alloc(arrayIndex, array->getDomain())),
+          ConstantExpr::alloc(value, array->getRange())));
+    }
+  }
+}
 }