error_evaluation.h

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//
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Copyright (C) 2026 by the ryujin authors
//
 
#pragma once
 
#include <ryujin/base/compile_time_options.h>
#include <ryujin/base/mpi_ensemble.h>
#include <ryujin/base/observer_pointer.h>
#include <ryujin/discretization/offline_data.h>
#include <ryujin/interface/hyperbolic_system.h>
#include <ryujin/interface/postprocessor.h>
#include <ryujin/interface/simulation.h>
#include <ryujin/interface/task.h>
 
#include <deal.II/base/parameter_acceptor.h>
 
#include <string>
#include <vector>
 
namespace ryujin
{
  template <int dim, typename Number = double>
  class ErrorEvaluation final : public dealii::ParameterAcceptor,
                                public Interface::Task<Number>
  {
  public:
 
    ErrorEvaluation(const Interface::Simulation<dim, Number> &simulation,
                    const std::string &subsection = "/ErrorEvaluation");
 
 
 
    void initialize(TaskContext<Number> &context) override;
 
    void execute(TaskContext<Number> &context) override;
 
    void finalize(TaskContext<Number> &context) override;
 
 
  private:
 
    std::vector<std::string> error_quantities_;
 
    bool error_normalize_;
 
    std::vector<std::string> error_norms_;
 
 
 
    Trigger<Number> trigger_;
 
    const Interface::Simulation<dim, Number> &simulation_;
    const MPIEnsemble &mpi_ensemble_;
 
    dealii::ObserverPointer<const OfflineData<dim, Number>> offline_data_;
 
    const Interface::Postprocessor<dim, Number> &postprocessor_;
 
    typename Interface::Postprocessor<dim, Number>::Selection selection_;
 
    std::string base_name_;
 
 
 
    std::vector<Number> compute(const StateVector<Number> &state_vector,
                                const StateVector<Number> &analytic) const;
 
    std::string description() const;
 
  };
 
} // namespace ryujin