vcsn::rat::variant< S > Struct Template Reference

A char[S] buffer to store and retrieve objects. More...

#include <parse.hh>

Inheritance diagram for vcsn::rat::variant< S >:

Collaboration diagram for vcsn::rat::variant< S >:

Public Types
typedef variant< S >	self_type
	Type of *this. More...

Public Member Functions
	variant ()
	Empty construction. More...
template<typename T >
	variant (const T &t)
	Construct and fill. More...
	~variant ()
	Destruction, allowed only if empty. More...
template<typename T >
T &	build ()
	Instantiate an empty T in here. More...
template<typename T >
T &	build (const T &t)
	Instantiate a T in here from t. More...
template<typename T >
T &	as ()
	Accessor to a built T. More...
template<typename T >
const T &	as () const
	Const accessor to a built T (for printer). More...
template<typename T >
void	swap (self_type &other)
	Swap the content with other, of same type. More...
template<typename T >
void	move (self_type &other)
	Move the content of other to this. More...
template<typename T >
void	copy (const self_type &other)
	Copy the content of other to this. More...
template<typename T >
void	destroy ()
	Destroy the stored T. More...

Private Member Functions
self_type &	operator= (const self_type &)
	Prohibit blind copies. More...
	variant (const self_type &)
template<typename T >
T *	yyas_ ()
	Accessor to raw memory as T. More...
template<typename T >
const T *	yyas_ () const
	Const accessor to raw memory as T. More...

Private Attributes
union {
long double   yyalign_me
	Strongest alignment constraints. More...
char   yyraw [S]
	A buffer large enough to store any of the semantic values. More...
}	yybuffer_

Detailed Description

template<size_t S>
struct vcsn::rat::variant< S >

A char[S] buffer to store and retrieve objects.

Sort of a variant, but does not keep track of the nature of the stored data, since that knowledge is available via the current state.

Definition at line 169 of file parse.hh.

Member Typedef Documentation

template<size_t S>

typedef variant<S> vcsn::rat::variant< S >::self_type

Type of *this.

Definition at line 172 of file parse.hh.

Constructor & Destructor Documentation

template<size_t S>

vcsn::rat::variant< S >::variant ( )

inline

Empty construction.

Definition at line 175 of file parse.hh.

template<size_t S>

template<typename T >

vcsn::rat::variant< S >::variant ( const T &  t )

inline

Construct and fill.

Definition at line 180 of file parse.hh.

template<size_t S>

vcsn::rat::variant< S >::~variant ( )

inline

Destruction, allowed only if empty.

Definition at line 187 of file parse.hh.

template<size_t S>

vcsn::rat::variant< S >::variant ( const self_type &  )

private

Member Function Documentation

template<size_t S>

template<typename T >

T& vcsn::rat::variant< S >::as ( )

inline

Accessor to a built T.

Definition at line 209 of file parse.hh.

Referenced by vcsn::rat::parser::parse().

template<size_t S>

template<typename T >

const T& vcsn::rat::variant< S >::as ( ) const

inline

Const accessor to a built T (for printer).

Definition at line 217 of file parse.hh.

template<size_t S>

template<typename T >

T& vcsn::rat::variant< S >::build ( )

inline

Instantiate an empty T in here.

Definition at line 193 of file parse.hh.

Referenced by vcsn::rat::parser::parse().

template<size_t S>

template<typename T >

T& vcsn::rat::variant< S >::build ( const T &  t )

inline

Instantiate a T in here from t.

Definition at line 201 of file parse.hh.

template<size_t S>

template<typename T >

void vcsn::rat::variant< S >::copy ( const self_type &  other )

inline

Copy the content of other to this.

Definition at line 252 of file parse.hh.

Referenced by vcsn::rat::parser::basic_symbol< Base >::basic_symbol().

template<size_t S>

template<typename T >

void vcsn::rat::variant< S >::destroy ( )

inline

Destroy the stored T.

Definition at line 260 of file parse.hh.

template<size_t S>

template<typename T >

void vcsn::rat::variant< S >::move ( self_type &  other )

inline

Move the content of other to this.

Destroys other.

Definition at line 242 of file parse.hh.

template<size_t S>

self_type& vcsn::rat::variant< S >::operator= ( const self_type &  )

private

Prohibit blind copies.

template<size_t S>

template<typename T >

void vcsn::rat::variant< S >::swap ( self_type &  other )

inline

Swap the content with other, of same type.

Both variants must be built beforehand, because swapping the actual data requires reading it (with as()), and this is not possible on unconstructed variants: it would require some dynamic testing, which should not be the variant's responsability. Swapping between built and (possibly) non-built is done with variant::move ().

Definition at line 232 of file parse.hh.

template<size_t S>

template<typename T >

T* vcsn::rat::variant< S >::yyas_ ( )

inlineprivate

Accessor to raw memory as T.

Definition at line 273 of file parse.hh.

template<size_t S>

template<typename T >

const T* vcsn::rat::variant< S >::yyas_ ( ) const

inlineprivate

Const accessor to raw memory as T.

Definition at line 282 of file parse.hh.

Member Data Documentation

template<size_t S>

long double vcsn::rat::variant< S >::yyalign_me

Strongest alignment constraints.

Definition at line 291 of file parse.hh.

union { ... } vcsn::rat::variant< S >::yybuffer_

Referenced by vcsn::rat::variant< sizeof(union_type)>::yyas_().

template<size_t S>

char vcsn::rat::variant< S >::yyraw[S]

A buffer large enough to store any of the semantic values.

Definition at line 293 of file parse.hh.

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The documentation for this struct was generated from the following file:

• lib/vcsn/rat/parse.hh