DataMap Class Reference

#include "DataMap.h"

Classes
class	Base

Public Member Functions
template<class T >
T *	Get (std::string const &k) const
template<class T , typename std::enable_if< std::is_default_constructible< T >::value, int >::type = 0>
T *	GetDefault (std::string const &k)
void	Set (std::string const &k, Base *v)
bool	Erase (std::string const &k)

Private Attributes
std::unordered_map< std::string, std::unique_ptr< Base > >	Container

Detailed Description

Member Function Documentation

Erase()

bool DataMap::Erase ( std::string const &  k )

inline

Removes objects with given key and returns true if one was removed, false otherwise

{ return Container.erase(k) != 0; }

References Container.

Get()

template<class T >

T * DataMap::Get ( std::string const &  k ) const

inline

Returns a pointer to object of requested type stored with given key or nullptr

    {
        static_assert(std::is_base_of<Base, T>::value, "T must derive from Base");
        if (Container.empty())
        {
            return nullptr;
        }
 
        auto it = Container.find(k);
        if (it != Container.end())
        {
            return dynamic_cast<T*>(it->second.get());
        }
        return nullptr;
    }

References Container.

GetDefault()

template<class T , typename std::enable_if< std::is_default_constructible< T >::value, int >::type = 0>

T * DataMap::GetDefault ( std::string const &  k )

inline

Returns a pointer to object of requested type stored with given key or default constructs one and returns that one

    {
        static_assert(std::is_base_of<Base, T>::value, "T must derive from Base");
        if (T* v = Get<T>(k))
        {
            return v;
        }
        T* v = new T();
        Container.emplace(k, std::unique_ptr<T>(v));
        return v;
    }

References Container.

Set()

void DataMap::Set ( std::string const &  k, Base *  v  )

inline

Stores a new object that inherits the Base class with the given key

{ Container[k] = std::unique_ptr<Base>(v); }

References Container.

Member Data Documentation

Container

std::unordered_map<std::string, std::unique_ptr<Base> > DataMap::Container

private

Referenced by Erase(), Get(), GetDefault(), and Set().