Proxy around an arbitrary container, which implements basic functionality and iteration.

The purpose of this implementation is to shield any generated dictionary implementation from the underlying streamer/proxy implementation and only expose the creation functions.

In particular this is used to implement splitting and abstract element access of any container. Access to compiled code is necessary to implement the abstract iteration sequence and functionality like size(), clear(), resize(). resize() may be a void operation.

Definition at line 34 of file TGenCollectionProxy.h.

Classes
class	Method
	Small helper to execute (compiler) generated function for the access to STL or other containers. More...

class	Method0

class	StreamHelper
	Helper class to facilitate I/O. More...

class	TStaging
	Small helper to stage the content of an associative container when reading and before inserting it in the actual collection. More...

class	Value
	Small helper to describe the Value_type or the key_type of an STL container. More...

Public Types
enum	{ kBIT_ISSTRING = 0x20000000, kBIT_ISTSTRING = 0x40000000 }

typedef const std::type_info &	Info_t

Public Types inherited from TVirtualCollectionProxy
enum	EProperty { kIsAssociative = BIT(2), kIsEmulated = BIT(3), kNeedDelete = BIT(4) }

typedef void(*	CreateIterators_t) (void collection, void begin_arena, void end_arena, TVirtualCollectionProxy proxy)

typedef void (	CopyIterator_t) (void dest, const void source)

typedef void (	Next_t) (void iter, const void end)

typedef void(*	DeleteIterator_t) (void *iter)

typedef void(*	DeleteTwoIterators_t) (void begin, void end)

Public Member Functions
virtual TVirtualCollectionProxy *	Generate () const
	Virtual copy constructor. More...

	TGenCollectionProxy (const TGenCollectionProxy &copy)
	Build a proxy for an emulated container. More...

	TGenCollectionProxy (Info_t typ, size_t iter_size)
	Build a proxy for a collection whose type is described by 'collectionClass'. More...

	TGenCollectionProxy (const ROOT::Detail::TCollectionProxyInfo &info, TClass *cl)
	Build a proxy for a collection whose type is described by 'collectionClass'. More...

virtual	~TGenCollectionProxy ()
	Standard destructor. More...

virtual TClass *	GetCollectionClass () const
	Return a pointer to the TClass representing the container. More...

virtual Int_t	GetCollectionType () const
	Return the type of collection see TClassEdit::ESTLType. More...

virtual ULong_t	GetIncrement () const
	Return the offset between two consecutive value_types (memory layout). More...

virtual UInt_t	Sizeof () const
	Return the sizeof the collection object. More...

virtual void	PushProxy (void *objstart)
	Add an object. More...

virtual void	PopProxy ()
	Remove the last object. More...

virtual Bool_t	HasPointers () const
	Return true if the content is of type 'pointer to'. More...

virtual TClass *	GetValueClass () const
	Return a pointer to the TClass representing the content. More...

virtual EDataType	GetType () const
	If the content is a simple numerical value, return its type (see TDataType) More...

virtual void *	At (UInt_t idx)
	Return the address of the value at index 'idx'. More...

virtual void	Clear (const char *opt="")
	Clear the emulated collection. More...

virtual void	Resize (UInt_t n, Bool_t force_delete)
	Resize the container. More...

virtual UInt_t	Size () const
	Return the current size of the container. More...

virtual void *	Allocate (UInt_t n, Bool_t forceDelete)
	Allocate the needed space. More...

virtual void	Insert (const void data, void container, size_t size)
	Insert data into the container where data is a C-style array of the actual type contained in the collection of the given size. More...

virtual void	Commit (void *env)
	Commit the change. More...

virtual void	Streamer (TBuffer &refBuffer)
	Streamer Function. More...

virtual void	Streamer (TBuffer &refBuffer, void *pObject, int siz)
	Streamer I/O overload. More...

virtual void	operator() (TBuffer &refBuffer, void *pObject)
	TClassStreamer IO overload. More...

virtual void	ReadBuffer (TBuffer &b, void *obj)

virtual void	ReadBuffer (TBuffer &b, void obj, const TClass onfileClass)

virtual void	SetOnFileClass (TClass *cl)

virtual TClass *	GetOnFileClass () const

virtual TStreamerInfoActions::TActionSequence *	GetConversionReadMemberWiseActions (TClass *oldClass, Int_t version)
	Return the set of action necessary to stream in this collection member-wise coming from the old value class layout refered to by 'version'. More...

virtual TStreamerInfoActions::TActionSequence *	GetReadMemberWiseActions (Int_t version)
	Return the set of action necessary to stream in this collection member-wise coming from the old value class layout refered to by 'version'. More...

virtual TStreamerInfoActions::TActionSequence *	GetWriteMemberWiseActions ()
	Return the set of action necessary to stream out this collection member-wise. More...

virtual CreateIterators_t	GetFunctionCreateIterators (Bool_t read=kTRUE)
	See typedef void (CreateIterators_t)(void collection, void &begin_arena, void &end_arena); begin_arena and end_arena should contain the location of memory arena of size fgIteratorSize. More...

virtual CopyIterator_t	GetFunctionCopyIterator (Bool_t read=kTRUE)
	See typedef void (CopyIterator_t)(void &dest, const void *source); Copy the iterator source, into dest. More...

virtual Next_t	GetFunctionNext (Bool_t read=kTRUE)
	See typedef void* (Next_t)(void iter, void *end); iter and end should be pointer to respectively an iterator to be incremented and the result of colleciton.end() 'Next' will increment the iterator 'iter' and return 0 if the iterator reached the end. More...

virtual DeleteIterator_t	GetFunctionDeleteIterator (Bool_t read=kTRUE)
	See typedef void (DeleteIterator_t)(void iter); If the sizeof iterator is greater than fgIteratorArenaSize, call delete on the addresses, Otherwise just call the iterator's destructor. More...

virtual DeleteTwoIterators_t	GetFunctionDeleteTwoIterators (Bool_t read=kTRUE)
	See typedef void (DeleteTwoIterators_t)(void begin, void *end); If the sizeof iterator is greater than fgIteratorArenaSize, call delete on the addresses, Otherwise just call the iterator's destructor. More...

Public Member Functions inherited from TVirtualCollectionProxy
	TVirtualCollectionProxy ()

	TVirtualCollectionProxy (TClass *cl)

virtual	~TVirtualCollectionProxy ()

virtual Int_t	GetProperties () const

virtual void *	New () const

virtual void *	New (void *arena) const

virtual void *	NewArray (Int_t nElements) const

virtual void *	NewArray (Int_t nElements, void *arena) const

virtual void	Destructor (void *p, Bool_t dtorOnly=kFALSE) const

virtual void	DeleteArray (void *p, Bool_t dtorOnly=kFALSE) const

char *	operator[] (UInt_t idx) const

Protected Types
typedef ROOT::Detail::TCollectionProxyInfo::Environ< char[64]>	Env_t

typedef ROOT::Detail::TCollectionProxyInfo::EnvironBase	EnvironBase_t

typedef std::vector< TStaging * >	Staged_t
	Collection of pre-allocated staged array for associative containers. More...

typedef std::vector< EnvironBase_t * >	Proxies_t

typedef void(*	Sizing_t) (void *obj, size_t size)

typedef void (	Feedfunc_t) (void from, void to, size_t size)

typedef void (	Collectfunc_t) (void from, void to)

typedef void (	ArrIterfunc_t) (void *from, size_t size)

Protected Member Functions
TGenCollectionProxy *	Initialize (Bool_t silent) const
	Proxy initializer. More...

virtual TGenCollectionProxy *	InitializeEx (Bool_t silent)
	Proxy initializer. More...

virtual void	DeleteItem (Bool_t force, void *ptr) const
	Call to delete/destruct individual item. More...

void	CheckFunctions () const
	Check existence of function pointers. More...

virtual void	UpdateValueClass (const TClass oldcl, TClass newcl)
	Update the internal ValueClass when a TClass constructor need to replace an emulated TClass by the real TClass. More...

Protected Attributes
TObjArray *	fReadMemberWise
	Array of bundle of TStreamerInfoActions to stream out (read) More...

std::map< std::string, TObjArray * > *	fConversionReadMemberWise
	Array of bundle of TStreamerInfoActions to stream out (read) derived from another class. More...

TStreamerInfoActions::TActionSequence *	fWriteMemberWise

std::string	fName
	Name of the class being proxied. More...

Bool_t	fPointers
	Flag to indicate if containee has pointers (key or value) More...

Method	fClear
	Method cache for container accessors: clear container. More...

Method	fSize
	Container accessors: size of container. More...

Sizing_t	fResize
	Container accessors: resize container. More...

Method	fFirst
	Container accessors: generic iteration: first. More...

Method	fNext
	Container accessors: generic iteration: next. More...

ArrIterfunc_t	fConstruct
	Container accessors: block construct. More...

Sizing_t	fDestruct
	Container accessors: block destruct. More...

Feedfunc_t	fFeed
	Container accessors: block feed. More...

Collectfunc_t	fCollect
	Method to collect objects from container. More...

Method0	fCreateEnv
	Method to allocate an Environment holder. More...

std::atomic< Value * >	fValue
	Descriptor of the container value type. More...

Value *	fVal
	Descriptor of the Value_type. More...

Value *	fKey
	Descriptor of the key_type. More...

EnvironBase_t *	fEnv
	Address of the currently proxied object. More...

int	fValOffset
	Offset from key to value (in maps) More...

int	fValDiff
	Offset between two consecutive value_types (memory layout). More...

Proxies_t	fProxyList
	Stack of recursive proxies. More...

Proxies_t	fProxyKept
	Optimization: Keep proxies once they were created. More...

Staged_t	fStaged
	Optimization: Keep staged array once they were created. More...

int	fSTL_type
	STL container type. More...

Info_t	fTypeinfo
	Type information. More...

TClass *	fOnFileClass
	On file class. More...

CreateIterators_t	fFunctionCreateIterators

CopyIterator_t	fFunctionCopyIterator

Next_t	fFunctionNextIterator

DeleteIterator_t	fFunctionDeleteIterator

DeleteTwoIterators_t	fFunctionDeleteTwoIterators

Protected Attributes inherited from TVirtualCollectionProxy
TClassRef	fClass

UInt_t	fProperties

Private Member Functions
	TGenCollectionProxy ()

TGenCollectionProxy &	operator= (const TGenCollectionProxy &)

Friends
class	TCollectionProxyFactory

Additional Inherited Members
Static Public Attributes inherited from TVirtualCollectionProxy
static const Int_t	fgIteratorArenaSize = 16

#include <TGenCollectionProxy.h>

Inheritance diagram for TGenCollectionProxy:

Collaboration diagram for TGenCollectionProxy:

Member Typedef Documentation

typedef void*(* TGenCollectionProxy::ArrIterfunc_t) (void *from, size_t size)

protected

Definition at line 302 of file TGenCollectionProxy.h.

typedef void*(* TGenCollectionProxy::Collectfunc_t) (void *from, void *to)

protected

Definition at line 301 of file TGenCollectionProxy.h.

typedef ROOT::Detail::TCollectionProxyInfo::Environ<char[64]> TGenCollectionProxy::Env_t

protected

Definition at line 292 of file TGenCollectionProxy.h.

typedef ROOT::Detail::TCollectionProxyInfo::EnvironBase TGenCollectionProxy::EnvironBase_t

protected

Definition at line 293 of file TGenCollectionProxy.h.

typedef void*(* TGenCollectionProxy::Feedfunc_t) (void *from, void *to, size_t size)

protected

Definition at line 300 of file TGenCollectionProxy.h.

typedef const std::type_info& TGenCollectionProxy::Info_t

Definition at line 46 of file TGenCollectionProxy.h.

typedef std::vector<EnvironBase_t*> TGenCollectionProxy::Proxies_t

protected

Definition at line 295 of file TGenCollectionProxy.h.

typedef void(* TGenCollectionProxy::Sizing_t) (void *obj, size_t size)

protected

Definition at line 299 of file TGenCollectionProxy.h.

typedef std::vector<TStaging*> TGenCollectionProxy::Staged_t

protected

Collection of pre-allocated staged array for associative containers.

Definition at line 294 of file TGenCollectionProxy.h.

Member Enumeration Documentation

anonymous enum

Enumerator
kBIT_ISSTRING
kBIT_ISTSTRING

Definition at line 49 of file TGenCollectionProxy.h.

Constructor & Destructor Documentation

TGenCollectionProxy::TGenCollectionProxy ( )

private

Referenced by Generate().

TGenCollectionProxy::TGenCollectionProxy ( const TGenCollectionProxy & copy )

Build a proxy for an emulated container.

Definition at line 544 of file TGenCollectionProxy.cxx.

TGenCollectionProxy::TGenCollectionProxy	(	Info_t	typ,
		size_t	iter_size
	)

Build a proxy for a collection whose type is described by 'collectionClass'.

Definition at line 582 of file TGenCollectionProxy.cxx.

TGenCollectionProxy::TGenCollectionProxy	(	const ROOT::Detail::TCollectionProxyInfo &	info,
		TClass *	cl
	)

Build a proxy for a collection whose type is described by 'collectionClass'.

Definition at line 627 of file TGenCollectionProxy.cxx.

TGenCollectionProxy::~TGenCollectionProxy ( )

virtual

Standard destructor.

Definition at line 693 of file TGenCollectionProxy.cxx.

Member Function Documentation

void * TGenCollectionProxy::Allocate	(	UInt_t	n,
		Bool_t	forceDelete
	)

virtual

Allocate the needed space.

For associative collection, this returns a TStaging object that need to be deleted manually or returned by calling Commit(TStaging*)

Classes

Public Types

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Private Member Functions

Friends

Additional Inherited Members

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation