/*
  *  MoMEMta: a modular implementation of the Matrix Element Method
  *  Copyright (C) 2016  Universite catholique de Louvain (UCL), Belgium
  *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation, either version 3 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <momemta/Module.h>
 
 #include <momemta/ParameterSet.h>
 #include <momemta/Types.h>
 
 template<typename T>
 class LooperSummer: public Module {
     public:
 
         LooperSummer(PoolPtr pool, const ParameterSet& parameters): Module(pool, parameters.getModuleName()) {
             input = pool->get<T>(parameters.get<InputTag>("input"));
         };
 
         virtual void beginPoint() override {
             *result = 0;
         }
 
         virtual Status work() override {
             *result += *input;
 
             return Status::OK;
         }
 
     private:
 
         // Inputs
         Value<T> input;
 
         // Outputs
         std::shared_ptr<T> result = produce<T>("sum");
 
 };
 
 template<>
 void LooperSummer<LorentzVector>::beginPoint() {
   result->SetXYZT(0, 0, 0, 0);
 }
 
 REGISTER_MODULE_NAME("IntLooperSummer", LooperSummer<int64_t>)
         .Input("input")
         .Output("sum");
 
 REGISTER_MODULE_NAME("DoubleLooperSummer", LooperSummer<double>)
         .Input("input")
         .Output("sum");
 
 REGISTER_MODULE_NAME("P4LooperSummer", LooperSummer<LorentzVector>)
         .Input("input")
         .Output("sum");