common/variant.hpp File Reference

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Detailed Description

This file defines a simple alternative to boost::variant.

It pulls in fewer headers and has a shorter code path, but also doesn't deal with alignement issues and is not threadsafe.

Values can be stored using operator= . In order to access the value stored in lumiera::Variant, you additionally need to define a "functor"

• with a typedef "Ret" for the return type
• providing a static Ret access(ELM&) function for each of the types used in the Variant

See also:

wrapperptr.hpp usage example

Definition in file variant.hpp.

#include "common/meta/typelistutil.hpp"
#include "common/meta/generator.hpp"
#include <boost/noncopyable.hpp>

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Namespaces
namespace	lumiera
namespace	lumiera::variant
Classes
struct	lumiera::variant::Holder< TYPES >
	internal helper used to build a variant storage wrapper. More...
struct	lumiera::variant::Holder< TYPES >::Buffer
	Storage to hold the actual value. More...
struct	lumiera::variant::Holder< TYPES >::CasePrepare< T, BASE, i >
struct	lumiera::variant::Holder< TYPES >::CaseSelect< FUNCTOR >
	provide a dispatcher table based visitation mechanism More...
struct	lumiera::variant::Holder< TYPES >::Deleter
struct	lumiera::variant::Holder< TYPES >::PlacementAdapter< T, BASE, idx >
class	lumiera::Variant< TYPES, Access >
	A variant wrapper (typesafe union) capable of holding a value of any of a bounded collection of types. More...