registry.h

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//    |  /           |
//    ' /   __| _` | __|  _ \   __|
//    . \  |   (   | |   (   |\__ `
//   _|\_\_|  \__,_|\__|\___/ ____/
//                   Multi-Physics
//
//  License:         BSD License
//                   Kratos default license: kratos/license.txt
//
//  Main authors:    Pooyan Dadvand
//                   Ruben Zorrilla
//
 
#pragma once
 
// System includes
#include <string>
#include <iostream>
 
// External includes
 
// Project includes
#include "includes/registry_item.h"
#include "utilities/parallel_utilities.h"
#include "utilities/string_utilities.h"
 
namespace Kratos
{
 
 
 
class KRATOS_API(KRATOS_CORE) Registry final
{
public:
 
    KRATOS_CLASS_POINTER_DEFINITION(Registry);
 
 
    Registry(){}
 
    ~Registry(){}
 
 
 
 
    template<typename TItemType, class... TArgumentsList >
    static RegistryItem& AddItem(
        std::string const& rItemFullName,
        TArgumentsList&&... Arguments)
    {
        KRATOS_TRY
 
        const std::lock_guard<LockObject> scope_lock(ParallelUtilities::GetGlobalLock());
 
        auto item_path = StringUtilities::SplitStringByDelimiter(rItemFullName, '.');
        KRATOS_ERROR_IF(item_path.empty()) << "The item full name is empty" << std::endl;
 
        RegistryItem* p_current_item = &GetRootRegistryItem();
 
        for(std::size_t i = 0 ; i < item_path.size() - 1 ; i++){
            auto& r_item_name = item_path[i];
            if(p_current_item->HasItem(r_item_name)){
                p_current_item = &p_current_item->GetItem(r_item_name);
            }
            else{
                p_current_item = &p_current_item->AddItem<RegistryItem>(r_item_name);
            }
        }
 
        // I am doing the last one out of the loop to create it with the given type and argument
        auto& r_item_name = item_path.back();
        if(p_current_item->HasItem(r_item_name)){
            KRATOS_ERROR << "The item \"" << rItemFullName << "\" is already registered." << std::endl;
        }
        else{
            p_current_item = &p_current_item->AddItem<TItemType>(r_item_name, std::forward<TArgumentsList>(Arguments)...);
        }
 
        return *p_current_item;
 
        KRATOS_CATCH("")
    }
 
    template<typename... Types>
    static std::string RegistryTemplateToString(Types&&... args) {
        std::string f_name = (... += ("," + std::to_string(args)));
        f_name.erase(0,1);
        return f_name;
    }
 
 
    static auto begin()
    {
        return mspRootRegistryItem->begin();
    }
 
    static auto cbegin()
    {
        return mspRootRegistryItem->cbegin();
    }
 
    static auto end()
    {
        return mspRootRegistryItem->end();
    }
 
    static auto const cend()
    {
        return mspRootRegistryItem->cend();
    }
 
    static RegistryItem& GetItem(std::string const& rItemFullName);
 
    template<typename TDataType>
    static TDataType const& GetValue(std::string const& rItemFullName)
    {
        return GetItem(rItemFullName).GetValue<TDataType>();
    }
 
    template<typename TDataType, typename TCastType>
    static typename std::enable_if<std::is_base_of<TDataType, TCastType>::value, TCastType>::type const GetValueAs(std::string const& rItemFullName)
    {
        return GetItem(rItemFullName).GetValueAs<TDataType, TCastType>();
    }
 
    static void RemoveItem(std::string const& ItemName);
 
 
    static std::size_t size();
 
    static bool HasItem(std::string const& rItemFullName);
 
    static bool HasValue(std::string const& rItemFullName);
 
    static bool HasItems(std::string const& rItemFullName);
 
 
    std::string Info() const;
 
    void PrintInfo(std::ostream& rOStream) const;
 
    void PrintData(std::ostream& rOStream) const;
 
    std::string ToJson(std::string const& Indentation) const;
 
 
 
private:
 
        static RegistryItem* mspRootRegistryItem;
 
 
 
 
 
 
 
 
        static RegistryItem& GetRootRegistryItem();
 
        static std::vector<std::string> SplitFullName(std::string const& FullName);
 
 
 
 
    Registry& operator=(Registry const& rOther);
 
    Registry(Registry const& rOther);
 
}; // Class Registry
 
 
 
 
 
 
inline std::istream& operator >> (
    std::istream& rIStream,
    Registry& rThis);
 
inline std::ostream& operator << (
    std::ostream& rOStream,
    const Registry& rThis)
{
    rThis.PrintInfo(rOStream);
    rOStream << std::endl;
    rThis.PrintData(rOStream);
 
    return rOStream;
}
 
 
}  // namespace Kratos.