ActionWarehouse.h

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//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

#include <string>
#include <set>
#include <map>
#include <vector>
#include <list>
#include <ostream>

// MOOSE includes
#include "Action.h"
#include "ConsoleStreamInterface.h"

using ActionIterator = std::list<Action *>::iterator;

class MooseMesh;
class Syntax;
class ActionFactory;
class FEProblem;

class ActionWarehouse : public ConsoleStreamInterface
{
public:
  ActionWarehouse(MooseApp & app, Syntax & syntax, ActionFactory & factory);
  ~ActionWarehouse();

  void build();

  void clear();

  bool empty() const { return _action_blocks.empty(); }

  void addActionBlock(std::shared_ptr<Action> blk);

  void checkUnsatisfiedActions() const;

  void printActionDependencySets() const;

  void printInputFile(std::ostream & out);


  ActionIterator actionBlocksWithActionBegin(const std::string & task);
  ActionIterator actionBlocksWithActionEnd(const std::string & task);

  const std::vector<std::shared_ptr<Action>> & allActionBlocks() const;

  const std::list<Action *> & getActionListByName(const std::string & task) const;

  template <class T>
  const T & getAction(const std::string & name)
  {
    typename std::shared_ptr<T> p;
    for (auto act_ptr : _all_ptrs)
    {
      if (act_ptr->name() == name)
      {
        p = std::dynamic_pointer_cast<T>(act_ptr);
        if (p)
          break;
      }
    }
    if (!p)
      mooseError("Action with name being ", name, " does not exist");
    return *p;
  }

  template <class T>
  std::vector<const T *> getActions()
  {
    // we need to create the map first to ensure that all actions in the map are unique
    // and the actions are sorted by their names
    typename std::map<std::string, const std::shared_ptr<T>> actions;
    for (auto act_ptr : _all_ptrs)
    {
      auto p = std::dynamic_pointer_cast<T>(act_ptr);
      if (p)
        actions.insert(std::make_pair(act_ptr->name(), p));
    }
    // construct the vector from the map entries
    std::vector<const T *> action_vector;
    for (auto & pair : actions)
      action_vector.push_back(pair.second.get());
    return action_vector;
  }

  template <class T>
  const T * getActionByTask(const std::string & task)
  {
    const auto it = _action_blocks.find(task);
    if (it == _action_blocks.end())
      return nullptr;

    T * p = nullptr;
    for (const auto & action : it->second)
    {
      T * tp = dynamic_cast<T *>(action);
      if (tp)
      {
        if (p)
          mooseError("More than one actions have been detected in getActionByTask");
        else
          p = tp;
      }
    }
    return p;
  }

  void setFinalTask(const std::string & task);

  bool hasActions(const std::string & task) const;

  void executeAllActions();

  void executeActionsWithAction(const std::string & name);

  void showActions(bool state = true) { _show_actions = state; }

  void showParser(bool state = true) { _show_parser = state; }

  Syntax & syntax() { return _syntax; }

  // We are not really using the reference counting capabilities of
  // shared pointers here, just their memory management capability.
  // Therefore, _mesh is actually being used more like a unique_ptr in
  // this context.  Since full support for unique_ptr is not quite
  // available yet, we've implemented it as a std::shared_ptr.
  std::shared_ptr<MooseMesh> & mesh() { return _mesh; }
  const std::shared_ptr<MooseMesh> & getMesh() const { return _mesh; }

  std::shared_ptr<MooseMesh> & displacedMesh() { return _displaced_mesh; }
  const std::shared_ptr<MooseMesh> & getDisplacedMesh() const { return _displaced_mesh; }

  std::shared_ptr<FEProblemBase> & problemBase() { return _problem; }
  std::shared_ptr<FEProblem> problem();
  MooseApp & mooseApp() { return _app; }
  const std::string & getCurrentTaskName() const { return _current_task; }

  std::string getCurrentActionName() const;

protected:
  void buildBuildableActions(const std::string & task);

  std::vector<std::shared_ptr<Action>> _all_ptrs;

  MooseApp & _app;
  Syntax & _syntax;
  ActionFactory & _action_factory;
  std::map<std::string, std::list<Action *>> _action_blocks;
  std::map<std::string, std::vector<Action *>> _requested_action_blocks;
  std::vector<std::string> _ordered_names;
  std::set<std::string> _unsatisfied_dependencies;

  bool _generator_valid;

  // DEBUGGING
  bool _show_actions;
  bool _show_parser;

  // When executing the actions in the warehouse, this string will always contain
  // the current task name
  std::string _current_task;

  //
  // data created by actions
  //

  std::shared_ptr<MooseMesh> _mesh;

  std::shared_ptr<MooseMesh> _displaced_mesh;

  std::shared_ptr<FEProblemBase> _problem;

private:
  std::string _final_task;

  ActionIterator _act_iter;

  const std::list<Action *> _empty_action_list;
};