Initialize theory rewriters in theories (#4197)

Until now, the `Rewriter` was responsible for creating `TheoryRewriter`
instances. This commit adds a method `mkTheoryRewriter()` that theories
override to create an instance of their corresponding theory rewriter.
The advantage is that the theories can pass additional information to
their theory rewriter (e.g. a statistics object).

1 files changed, 6 insertions, 1 deletions

diff --git a/test/unit/theory/theory_white.h b/test/unit/theory/theory_white.h
index 0dd52be8c..eb43e00cb 100644
--- a/test/unit/theory/theory_white.h
+++ b/test/unit/theory/theory_white.h
@@ -93,7 +93,7 @@ class TestOutputChannel : public OutputChannel {
 };
 
 class DummyTheory : public Theory {
-public:
+ public:
   set<Node> d_registered;
   vector<Node> d_getSequence;
 
@@ -102,6 +102,11 @@ public:
       : Theory(theory::THEORY_BUILTIN, ctxt, uctxt, out, valuation, logicInfo)
   {}
 
+  std::unique_ptr<TheoryRewriter> mkTheoryRewriter()
+  {
+    return std::unique_ptr<TheoryRewriter>();
+  }
+
   void registerTerm(TNode n) {
     // check that we registerTerm() a term only once
     TS_ASSERT(d_registered.find(n) == d_registered.end());