hb-null.hh File Reference

#include "hb.hh"
#include "hb-meta.hh"

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Classes
struct	_hb_null_size< T, typename >
struct	_hb_null_size< T, hb_void_t< decltype(T::min_size)> >
struct	_hb_static_size< T, typename >
struct	_hb_static_size< T, hb_void_t< decltype(T::min_size)> >
struct	_hb_min_size< T, typename >
struct	_hb_min_size< T, hb_void_t< decltype(T::min_size)> >
struct	Null< Type >
struct	NullHelper< QType >
struct	CrapHelper< QType >
struct	CrapOrNullHelper< Type >
struct	CrapOrNullHelper< const Type >
struct	hb_nonnull_ptr_t< P >

Macros
#define	HB_NULL_POOL_SIZE   384
#define	hb_null_size(T)   hb_null_size<T>::value
#define	hb_static_size(T)   hb_static_size<T>::value
#define	hb_min_size(T)   hb_min_size<T>::value
#define	Null(Type)   NullHelper<Type>::get_null ()
#define	DECLARE_NULL_NAMESPACE_BYTES(Namespace, Type)
#define	DEFINE_NULL_NAMESPACE_BYTES(Namespace, Type)    const unsigned char _hb_Null_##Namespace##_##Type[Namespace::Type::null_size]
#define	DECLARE_NULL_INSTANCE(Type)
#define	DEFINE_NULL_INSTANCE(Type)    const Type _hb_Null_##Type
#define	Crap(Type)   CrapHelper<Type>::get_crap ()
#define	CrapOrNull(Type)   CrapOrNullHelper<Type>::get ()

Typedefs
template<typename T >
using	hb_null_size = _hb_null_size< T, void >
template<typename T >
using	hb_static_size = _hb_static_size< T, void >
template<typename T >
using	hb_min_size = _hb_min_size< T, void >

Variables
HB_INTERNAL uint64_t const	_hb_NullPool [(HB_NULL_POOL_SIZE+sizeof(uint64_t) - 1)/sizeof(uint64_t)]
HB_INTERNAL uint64_t	_hb_CrapPool [(HB_NULL_POOL_SIZE+sizeof(uint64_t) - 1)/sizeof(uint64_t)]

Macro Definition Documentation

Crap

#define Crap

(

Type

)

CrapHelper<Type>::get_crap ()

Definition at line 159 of file hb-null.hh.

CrapOrNull

#define CrapOrNull

(

Type

)

CrapOrNullHelper<Type>::get ()

Definition at line 169 of file hb-null.hh.

DECLARE_NULL_INSTANCE

#define DECLARE_NULL_INSTANCE

(

Type

)

Value:

    extern HB_INTERNAL const Type _hb_Null_##Type; \
    template <> \
    struct Null<Type> { \
      static Type const & get_null () { \
        return _hb_Null_##Type; \
      } \
    }; \
    static_assert (true, "") /* Require semicolon after. */

Definition at line 124 of file hb-null.hh.

DECLARE_NULL_NAMESPACE_BYTES

#define DECLARE_NULL_NAMESPACE_BYTES	(		Namespace,
			Type
	)

Value:

    } /* Close namespace. */ \
    extern HB_INTERNAL const unsigned char _hb_Null_##Namespace##_##Type[Namespace::Type::null_size]; \
    template <> \
    struct Null<Namespace::Type> { \
      static Namespace::Type const & get_null () { \
        return *reinterpret_cast<const Namespace::Type *> (_hb_Null_##Namespace##_##Type); \
      } \
    }; \
    namespace Namespace { \
    static_assert (true, "") /* Require semicolon after. */

Definition at line 109 of file hb-null.hh.

DEFINE_NULL_INSTANCE

#define DEFINE_NULL_INSTANCE

(

Type

)

const Type _hb_Null_##Type

Definition at line 133 of file hb-null.hh.

DEFINE_NULL_NAMESPACE_BYTES

#define DEFINE_NULL_NAMESPACE_BYTES	(		Namespace,
			Type
	)		const unsigned char _hb_Null_##Namespace##_##Type[Namespace::Type::null_size]

Definition at line 120 of file hb-null.hh.

hb_min_size

#define hb_min_size

(

T

)

hb_min_size<T>::value

Definition at line 81 of file hb-null.hh.

HB_NULL_POOL_SIZE

#define HB_NULL_POOL_SIZE   384

Definition at line 40 of file hb-null.hh.

hb_null_size

#define hb_null_size

(

T

)

hb_null_size<T>::value

Definition at line 60 of file hb-null.hh.

hb_static_size

#define hb_static_size

(

T

)

hb_static_size<T>::value

Definition at line 73 of file hb-null.hh.

Null

#define Null

(

Type

)

NullHelper<Type>::get_null ()

Definition at line 106 of file hb-null.hh.

Typedef Documentation

hb_min_size

template<typename T >

using hb_min_size = _hb_min_size<T, void>

Definition at line 80 of file hb-null.hh.

hb_null_size

template<typename T >

using hb_null_size = _hb_null_size<T, void>

Definition at line 59 of file hb-null.hh.

hb_static_size

template<typename T >

using hb_static_size = _hb_static_size<T, void>

Definition at line 72 of file hb-null.hh.

Variable Documentation

_hb_CrapPool

HB_INTERNAL uint64_t _hb_CrapPool[(HB_NULL_POOL_SIZE+sizeof(uint64_t) - 1)/sizeof(uint64_t)]

extern

Definition at line 44 of file hb-static.cc.

_hb_NullPool

HB_INTERNAL uint64_t const _hb_NullPool[(HB_NULL_POOL_SIZE+sizeof(uint64_t) - 1)/sizeof(uint64_t)]

extern

Definition at line 43 of file hb-static.cc.