This class represents a completely empty chunk. More...

#include <EmptyChunk.h>

Inheritance diagram for inet::EmptyChunk:

Public Member Functions
Constructors, destructors and duplication related functions
	EmptyChunk ()

	EmptyChunk (const EmptyChunk &other)

virtual EmptyChunk *	dup () const override

virtual const Ptr< Chunk >	dupShared () const override
	Returns a mutable copy of this chunk in a shared pointer. More...

Public Member Functions inherited from inet::Chunk
	Chunk ()

	Chunk (const Chunk &other)

virtual void	forEachChild (cVisitor *v) override

virtual void	parsimPack (cCommBuffer *buffer) const override

virtual void	parsimUnpack (cCommBuffer *buffer) override

virtual bool	isMutable () const

virtual bool	isImmutable () const

virtual void	markImmutable ()

void	markMutableIfExclusivelyOwned ()

virtual bool	isComplete () const

virtual bool	isIncomplete () const

virtual void	markIncomplete ()

virtual bool	isCorrect () const

virtual bool	isIncorrect () const

virtual void	markIncorrect ()

virtual bool	isProperlyRepresented () const

virtual bool	isImproperlyRepresented () const

virtual void	markImproperlyRepresented ()

virtual void	moveIterator (Iterator &iterator, b length) const

virtual void	seekIterator (Iterator &iterator, b position) const

virtual bool	canInsertAtFront (const Ptr< const Chunk > &chunk) const
	Returns true if this chunk is capable of representing the result. More...

virtual bool	canInsertAtBack (const Ptr< const Chunk > &chunk) const
	Returns true if this chunk is capable of representing the result. More...

virtual bool	canInsertAt (const Ptr< const Chunk > &chunk, b offset) const
	Returns true if this chunk is capable of representing the result. More...

void	insertAtFront (const Ptr< const Chunk > &chunk)
	Inserts the provided chunk at the beginning of this chunk. More...

void	insertAtBack (const Ptr< const Chunk > &chunk)
	Inserts the provided chunk at the end of this chunk. More...

void	insertAt (const Ptr< const Chunk > &chunk, b offset)
	Inserts the provided chunk into this chunk. More...

virtual bool	canRemoveAtFront (b length) const
	Returns true if this chunk is capable of representing the result. More...

virtual bool	canRemoveAtBack (b length) const
	Returns true if this chunk is capable of representing the result. More...

virtual bool	canRemoveAt (b offset, b length) const
	Returns true if this chunk is capable of representing the result. More...

void	removeAtFront (b length)
	Removes the requested part from the beginning of this chunk. More...

void	removeAtBack (b length)
	Removes the requested part from the end of this chunk. More...

void	removeAt (b offset, b length)
	Removes the requested part from this chunk. More...

int	getChunkId () const
	Returns the sequentially assigned id. More...

virtual bool	containsSameData (const Chunk &other) const
	Returns true if the two chunks represent the same binary data. More...

virtual bool	isEmpty () const
	Returns true if this chunk contains no data. More...

const Ptr< Chunk >	simplify () const
	Returns the simplified representation of this chunk eliminating all potential redundancies. More...

const Ptr< Chunk >	peek (const Iterator &iterator, b length=unspecifiedLength, int flags=0) const
	Returns the designated part of the data represented by this chunk in its default representation. More...

template<typename T >
bool	has (const Iterator &iterator, b length=unspecifiedLength) const
	Returns whether if the designated part of the data is available in the requested representation. More...

template<typename T >
const Ptr< T >	peek (const Iterator &iterator, b length=unspecifiedLength, int flags=0) const
	Returns the designated part of the data represented by this chunk in the requested representation. More...

virtual SharingRegionTagSet &	getRegionTags () override
	Returns all region tags. More...

int	getNumTags () const
	Returns the number of chunk tags. More...

const Ptr< const TagBase >	getTag (int index) const
	Returns the chunk tag at the given index. More...

void	clearTags (b offset=b(0), b length=b(-1))
	Clears the set of chunk tags in the given region. More...

void	copyTags (const Chunk &source, b sourceOffset=b(0), b offset=b(0), b length=b(-1))
	Copies the set of chunk tags from the source region to the provided region. More...

template<typename T >
const Ptr< const T >	findTag (b offset=b(0), b length=b(-1)) const
	Returns the chunk tag for the provided type and range, or returns nullptr if no such chunk tag is found. More...

template<typename T >
const Ptr< const T >	getTag (b offset=b(0), b length=b(-1)) const
	Returns the chunk tag for the provided type and range, or throws an exception if no such chunk tag is found. More...

template<typename T >
void	mapAllTags (b offset, b length, std::function< void(b, b, const Ptr< const T > &)> f) const
	Maps all tags in the provided range to to the function. More...

template<typename T >
void	mapAllTagsForUpdate (b offset, b length, std::function< void(b, b, const Ptr< T > &)> f)
	Maps all tags in the provided range to to the function. More...

template<typename T >
std::vector< SharingRegionTagSet::RegionTag< const T > >	getAllTags (b offset=b(0), b length=b(-1)) const
	Returns all chunk tags for the provided type and range in a detached vector of region tags. More...

template<typename T >
std::vector< SharingRegionTagSet::RegionTag< T > >	getAllTagsForUpdate (b offset=b(0), b length=b(-1))
	Returns all chunk tags for the provided type and range in a detached vector of region tags. More...

template<typename T >
const Ptr< T >	addTag (b offset=b(0), b length=b(-1))
	Returns a newly added chunk tag for the provided type and range, or throws an exception if such a chunk tag is already present. More...

template<typename T >
const Ptr< T >	addTagIfAbsent (b offset=b(0), b length=b(-1))
	Returns a newly added chunk tag for the provided type and range if absent, or returns the chunk tag that is already present. More...

template<typename T >
std::vector< SharingRegionTagSet::RegionTag< T > >	addTagsWhereAbsent (b offset=b(0), b length=b(-1))
	Returns the newly added chunk tags for the provided type and range where the tag is absent. More...

template<typename T >
const Ptr< T >	removeTag (b offset, b length)
	Removes the chunk tag for the provided type and range, or throws an exception if no such chunk tag is found. More...

template<typename T >
const Ptr< T >	removeTagIfPresent (b offset, b length)
	Removes the chunk tag for the provided type and range if present, or returns nullptr if no such chunk tag is found. More...

template<typename T >
std::vector< SharingRegionTagSet::RegionTag< T > >	removeTagsWherePresent (b offset, b length)
	Removes and returns all chunk tags for the provided type and range. More...

virtual std::ostream &	printToStream (std::ostream &stream, int level, int evFlags=0) const override
	Prints an optinally formatted human readable string representation of the data present in this chunk to the given stream. More...

virtual std::string	str () const override
	Returns a human readable string representation of the data present in this chunk. More...

Public Member Functions inherited from inet::IPrintableObject
virtual	~IPrintableObject ()

virtual std::string	printToString () const

virtual std::string	printToString (int level, int evFlags=0) const

virtual std::string	getInfoStringRepresentation (int evFlags=0) const

virtual std::string	getDetailStringRepresentation (int evFlags=0) const

virtual std::string	getDebugStringRepresentation (int evFlags=0) const

virtual std::string	getTraceStringRepresentation (int evFlags=0) const

virtual std::string	getCompleteStringRepresentation (int evFlags=0) const

Static Public Attributes
static const Ptr< EmptyChunk >	singleton = makeShared<EmptyChunk>()

Static Public Attributes inherited from inet::Chunk
static const b	unspecifiedLength = b(-std::numeric_limits<int64_t>::max())

static bool	enableImplicitChunkSerialization = false
	Peeking some part into a chunk that requires automatic serialization will throw an exception when implicit chunk serialization is disabled. More...

static int	nextId = 0

Protected Member Functions
virtual const Ptr< Chunk >	peekUnchecked (PeekPredicate predicate, PeekConverter converter, const Iterator &iterator, b length, int flags) const override

Protected Member Functions inherited from inet::Chunk
int	getBinDumpNumLines () const

int	getHexDumpNumLines () const

const char *	getBinDumpLine (int index)

const char *	getHexDumpLine (int index)

const SharingRegionTagSet::RegionTag< TagBase > &	_getTag (int index) const

void	checkMutable () const

virtual void	handleChange ()

virtual void	doInsertAtFront (const Ptr< const Chunk > &chunk)

virtual void	doInsertAtBack (const Ptr< const Chunk > &chunk)

virtual void	doInsertAt (const Ptr< const Chunk > &chunk, b offset)

virtual void	doRemoveAtFront (b length)

virtual void	doRemoveAtBack (b length)

virtual void	doRemoveAt (b offset, b length)

template<typename T >
const Ptr< T >	peekConverted (const Iterator &iterator, b length, int flags) const

template<typename T >
const Ptr< T >	checkPeekResult (const Ptr< T > &chunk, int flags) const

Static Protected Member Functions
static const Ptr< Chunk >	convertChunk (const std::type_info &typeInfo, const Ptr< Chunk > &chunk, b offset, b length, int flags)

Static Protected Member Functions inherited from inet::Chunk
static const Ptr< Chunk >	convertChunk (const std::type_info &typeInfo, const Ptr< Chunk > &chunk, b offset, b length, int flags)
	Creates a new chunk of the given type that represents the designated part of the provided chunk. More...

Friends
class	Chunk

Overridden chunk functions
virtual ChunkType	getChunkType () const override
	Returns the type of this chunk as an enum member. More...

virtual b	getChunkLength () const override
	Returns the length of data represented by this chunk. More...

virtual std::ostream &	printFieldsToStream (std::ostream &stream, int level, int evFlags=0) const override
	Prints an optinally formatted human readable string representation of the feilds of this chunk to the given stream. More...

static const Ptr< Chunk >	getEmptyChunk (int flags)

Additional Inherited Members
Public Types inherited from inet::Chunk
enum	ChunkType { CT_EMPTY, CT_BITCOUNT, CT_BITS, CT_BYTECOUNT, CT_BYTES, CT_SLICE, CT_ENCRYPTED, CT_CPACKET, CT_SEQUENCE, CT_FIELDS }
	This enum is used to avoid std::dynamic_cast and dynamicPtrCast. More...

enum	PeekFlag { PF_ALLOW_NULLPTR = (1 << 0), PF_ALLOW_EMPTY = (1 << 1), PF_ALLOW_INCOMPLETE = (1 << 2), PF_ALLOW_INCORRECT = (1 << 3), PF_ALLOW_IMPROPERLY_REPRESENTED = (1 << 4), PF_ALLOW_SERIALIZATION = (1 << 5), PF_ALLOW_ALL = -1 }
	This enum specifies bitmasks for the flags argument of various peek functions. More...

Public Types inherited from inet::IPrintableObject
enum	PrintLevel { PRINT_LEVEL_TRACE, PRINT_LEVEL_DEBUG, PRINT_LEVEL_DETAIL, PRINT_LEVEL_INFO, PRINT_LEVEL_COMPLETE = INT_MIN }

enum	PrintFlag { PRINT_FLAG_FORMATTED = (1 << 0), PRINT_FLAG_MULTILINE = (1 << 1) }

Static Public Member Functions inherited from inet::Chunk
static void	serialize (MemoryOutputStream &stream, const Ptr< const Chunk > &chunk, b offset=b(0), b length=b(-1))
	Serializes a chunk into the given stream. More...

static const Ptr< Chunk >	deserialize (MemoryInputStream &stream, const std::type_info &typeInfo)
	Deserializes a chunk from the given stream. More...

Protected Types inherited from inet::Chunk
enum	ChunkFlag { CF_IMMUTABLE = (1 << 0), CF_INCOMPLETE = (1 << 1), CF_INCORRECT = (1 << 2), CF_IMPROPERLY_REPRESENTED = (1 << 3) }
	This enum specifies bitmasks for the flags field of Chunk. More...

typedef bool(*	PeekPredicate) (const Ptr< Chunk > &)

Protected Attributes inherited from inet::Chunk
int	id
	The id is automatically assigned sequentially during construction. More...

int	flags
	The boolean chunk flags are merged into a single integer. More...

SharingRegionTagSet	regionTags
	The set of region tags attached to the data represented by this chunk. More...

const typedef Ptr< Chunk >(*	PeekConverter )(const Ptr< Chunk > &chunk, const Chunk::Iterator &iterator, b length, int flags)

Detailed Description

This class represents a completely empty chunk.

Constructor & Destructor Documentation

◆ EmptyChunk() [1/2]

inet::EmptyChunk::EmptyChunk ( )

                        :
     Chunk()
 {
     markImmutable();
 }

◆ EmptyChunk() [2/2]

inet::EmptyChunk::EmptyChunk ( const EmptyChunk & other )

                                               :
     Chunk(other)
 {
     markImmutable();
 }

Member Function Documentation

◆ convertChunk()

const Ptr< Chunk > inet::EmptyChunk::convertChunk	(	const std::type_info &	typeInfo,
		const Ptr< Chunk > &	chunk,
		b	offset,
		b	length,
		int	flags
	)

staticprotected

 {
     CHUNK_CHECK_IMPLEMENTATION(offset == b(0));
     CHUNK_CHECK_IMPLEMENTATION(length == b(0));
     return makeShared<EmptyChunk>();
 }

◆ dup()

virtual EmptyChunk* inet::EmptyChunk::dup ( ) const

inlineoverridevirtual

36 { return new EmptyChunk(*this); }

◆ dupShared()

virtual const Ptr<Chunk> inet::EmptyChunk::dupShared ( ) const

inlineoverridevirtual

Returns a mutable copy of this chunk in a shared pointer.

Reimplemented from inet::Chunk.

37 { return makeShared<EmptyChunk>(*this); }

◆ getChunkLength()

virtual b inet::EmptyChunk::getChunkLength ( ) const

inlineoverridevirtual

Returns the length of data represented by this chunk.

Implements inet::Chunk.

43 { return b(0); }

◆ getChunkType()

virtual ChunkType inet::EmptyChunk::getChunkType ( ) const

inlineoverridevirtual

Returns the type of this chunk as an enum member.

This can be used to avoid expensive std::dynamic_cast and dynamicPtrCast operators.

Implements inet::Chunk.

42 { return CT_EMPTY; }

◆ getEmptyChunk()

static const Ptr<Chunk> inet::EmptyChunk::getEmptyChunk ( int flags )

inlinestatic

                                                      {
         if (flags & PF_ALLOW_NULLPTR)
             return nullptr;
         else if (flags & PF_ALLOW_EMPTY)
             return EmptyChunk::singleton;
         else
             throw cRuntimeError("Returning an empty chunk is not allowed according to the flags: %x", flags);
     }

Referenced by peekUnchecked(), inet::cPacketChunk::peekUnchecked(), inet::BitCountChunk::peekUnchecked(), inet::BytesChunk::peekUnchecked(), inet::BitsChunk::peekUnchecked(), inet::ByteCountChunk::peekUnchecked(), inet::EncryptedChunk::peekUnchecked(), inet::FieldsChunk::peekUnchecked(), inet::SliceChunk::peekUnchecked(), and inet::SequenceChunk::peekUnchecked().

◆ peekUnchecked()

const Ptr< Chunk > inet::EmptyChunk::peekUnchecked	(	PeekPredicate	predicate,
		PeekConverter	converter,
		const Iterator &	iterator,
		b	length,
		int	flags
	)		const

overrideprotectedvirtual

Implements inet::Chunk.

 {
     CHUNK_CHECK_USAGE(iterator.getPosition() == b(0), "iterator is out of range");
     CHUNK_CHECK_USAGE(length <= b(0), "length is invalid");
     // 1. peeking returns nullptr
     if (predicate == nullptr || predicate(nullptr))
         return EmptyChunk::getEmptyChunk(flags);
     // 2. peeking returns this chunk
     auto result = const_cast<EmptyChunk *>(this)->shared_from_this();
     if (predicate == nullptr || predicate(result))
         return result;
     // 3. peeking with conversion
     return converter(const_cast<EmptyChunk *>(this)->shared_from_this(), iterator, length, flags);
 }

◆ printFieldsToStream()

virtual std::ostream& inet::EmptyChunk::printFieldsToStream	(	std::ostream &	stream,
		int	level,
		int	evFlags = `0`
	)		const

inlineoverridevirtual

Prints an optinally formatted human readable string representation of the feilds of this chunk to the given stream.

Reimplemented from inet::Chunk.

45 { return stream; }

Friends And Related Function Documentation

◆ Chunk

friend class Chunk

friend

Member Data Documentation

◆ singleton

const Ptr< EmptyChunk > inet::EmptyChunk::singleton = makeShared<EmptyChunk>()

static

Referenced by inet::ChunkQueue::clear(), inet::Packet::eraseAt(), getEmptyChunk(), inet::Packet::insertAt(), inet::ChunkQueue::push(), inet::ChunkQueue::remove(), and inet::Packet::replaceAt().

The documentation for this class was generated from the following files:

Public Member Functions

Static Public Attributes

Protected Member Functions

Static Protected Member Functions

Friends

Overridden chunk functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ EmptyChunk() [1/2]

◆ EmptyChunk() [2/2]

Member Function Documentation

◆ convertChunk()

◆ dup()

◆ dupShared()

◆ getChunkLength()

◆ getChunkType()

◆ getEmptyChunk()

◆ peekUnchecked()

◆ printFieldsToStream()

Friends And Related Function Documentation

◆ Chunk

Member Data Documentation

◆ singleton