add stubs for arithmetic

src/sat/smt/arith_solver.cpp

@@ -0,0 +1,40 @@
+/*++
+Copyright (c) 2020 Microsoft Corporation
+
+Module Name:
+
+    arith_solver.cpp
+
+Abstract:
+
+    Theory plugin for arithmetic
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2020-09-08
+
+--*/
+#pragma once
+
+#include "sat/smt/euf_solver.h"
+#include "sat/smt/arith_solver.h"
+
+
+namespace arith {
+
+    solver::solver(euf::solver& ctx, theory_id id):
+        th_euf_solver(ctx, symbol("arith"), id),
+        a(m)
+    {}
+
+    solver::~solver() {}
+
+    void solver::asserted(literal l) {}
+    sat::check_result solver::check() { return sat::check_result::CR_DONE; }
+    
+    euf::th_solver* solver::clone(sat::solver* s, euf::solver& ctx) { return nullptr;}
+    void solver::new_eq_eh(euf::th_eq const& eq) {}
+    bool solver::unit_propagate() { return false; }
+    void solver::add_value(euf::enode* n, model& mdl, expr_ref_vector& values) {}
+    void solver::add_dep(euf::enode* n, top_sort<euf::enode>& dep) {}
+}