template out the copy

Author: zingale

integration/integrator.H

@@ -7,22 +7,40 @@
 #include <actual_integrator.H>
 #endif
 
-template <typename BurnT>
+template <typename BurnT, bool enable_retry>
 AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE
-void integrator (BurnT& state, Real dt)
+void integrator_wrapper (BurnT& state, Real dt)
 {
 
-    burn_t old_state;
-    if (use_burn_retry) {
-        old_state = state;
+    if constexpr (enable_retry) {
+        burn_t old_state{state};
+
+        actual_integrator(state, dt);
+
+        if (!state.success) {
+            state = old_state;
+            const bool is_retry = true;
+            actual_integrator(state, dt, is_retry);
+        }
+    } else {
+        actual_integrator(state, dt);
     }
 
-    actual_integrator(state, dt);
+}
+
+
+template <typename BurnT>
+AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE
+void integrator (BurnT& state, Real dt)
+{
+
+    if (integrator_rp::use_burn_retry) {
+        constexpr bool enable_retry{true};
+        integrator_wrapper<BurnT, enable_retry>(state, dt);
+    } else {
+        constexpr bool enable_retry{false};
+        integrator_wrapper<BurnT, enable_retry>(state, dt);
 
-    if (!state.success && use_burn_retry) {
-        state = old_state;
-        const bool is_retry = true;
-        actual_integrator(state, dt, is_retry);
     }
 }