SocketEncoding Class Reference

#include <SocketEncoding.hh>

Inheritance diagram for SocketEncoding:

Collaboration diagram for SocketEncoding:

Public Member Functions
	SocketEncoding (const std::string &name, unsigned int encoding, unsigned int extraBits, SlotField &parent)
	SocketEncoding (const ObjectState *state, SlotField &parent)
virtual	~SocketEncoding ()
SlotField *	parent () const
std::string	socketName () const
void	setSocketCodes (SocketCodeTable &codeTable)
void	unsetSocketCodes ()
bool	hasSocketCodes () const
SocketCodeTable &	socketCodes () const
int	socketCodePosition () const
void	setEncoding (unsigned int encoding, unsigned int extraBits)
int	socketIDPosition () const
int	socketIDWidth () const
virtual int	width () const
virtual int	bitPosition () const
virtual ObjectState *	saveState () const
Public Member Functions inherited from Encoding
virtual	~Encoding ()
InstructionField *	parent () const
unsigned int	encoding () const
unsigned int	extraBits () const

Static Public Attributes
static const std::string	OSNAME_SOCKET_ENCODING = "socket_encoding"
	ObjectState name for socket encoding.
static const std::string	OSKEY_SOCKET_NAME = "socket_name"
	ObjectState attribute key for the name of the socket.
static const std::string	OSKEY_SC_TABLE = "sc_table"
	ObjectState attribute key for the name of the socket code table.
Static Public Attributes inherited from Encoding
static const std::string	OSNAME_ENCODING = "encoding"
	ObjectState name for Encoding class.
static const std::string	OSKEY_ENCODING = "encoding"
	ObjectState attribute key for the encoding.
static const std::string	OSKEY_EXTRA_BITS = "extra_bits"
	ObjectState attribute key for the number of extra bits.

Private Member Functions
void	detachFromParent ()

Private Attributes
std::string	name_
	Name of the socket.
SocketCodeTable *	socketCodes_
	Socket code table.

Additional Inherited Members
Protected Member Functions inherited from Encoding
	Encoding (unsigned int encoding, unsigned int extraBits, InstructionField *parent)
	Encoding (const ObjectState *state, InstructionField *parent)
void	setParent (InstructionField *parent)
void	setEncoding (unsigned int encoding, unsigned int extraBits)

Detailed Description

The SocketEncoding class models how socket sources or destinations are mapped to control codes.

Sockets have an independent encoding in each source or destination field they appear in. A socket encoding can be more complex than a fixed control code and encode many destinations or sources all reached from the same socket. In this case, the socket encoding contains SocketCodeTable instance.

Definition at line 51 of file SocketEncoding.hh.

Constructor & Destructor Documentation

SocketEncoding() [1/2]

SocketEncoding::SocketEncoding	(	const std::string &	name,
		unsigned int	encoding,
		unsigned int	extraBits,
		SlotField &	parent
	)

The constructor.

Creates a socket encoding and registers it into the given slot field. The socket is identified by name. The (fixed) part of the socket encoding and the parent slot field are given as parameters.

Parameters

name	Name of the socket.
encoding	Fixed part of the encoding.
extraBits	The number of extra (zero) bits in the encoding.
parent	The parent slot field.

Exceptions

ObjectAlreadyExists

If the parent slot field already has an encoding for the same socket, or if the given encoding is ambiguous with another encoding in the parent slot field.

Definition at line 66 of file SocketEncoding.cc.

    : Encoding(encoding, extraBits, NULL), name_(name), socketCodes_(NULL) {
    parent.addSocketEncoding(*this);
    setParent(&parent);
}

References SlotField::addSocketEncoding(), parent(), and Encoding::setParent().

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SocketEncoding() [2/2]

SocketEncoding::SocketEncoding	(	const ObjectState *	state,
		SlotField &	parent
	)

The constructor.

Loads the state of the object from the given ObjectState instance.

Parameters

state	The ObjectState instance.
parent	The parent slot field.

Exceptions

ObjectStateLoadingException	If an error occurs while loading the state.
ObjectAlreadyExists	If the parent slot field already has an encoding for the same socket, or if the given encoding is ambiguous with another encoding in the parent slot field.

Definition at line 88 of file SocketEncoding.cc.

    : Encoding(state, &parent), name_(""), socketCodes_(NULL) {
    const string procName = "SocketEncoding::SocketEncoding";
 
    try {
    name_ = state->stringAttribute(OSKEY_SOCKET_NAME);
    if (state->hasAttribute(OSKEY_SC_TABLE)) {
        string tableName = state->stringAttribute(OSKEY_SC_TABLE);
        BinaryEncoding* bem = parent.parent()->parent();
        if (&bem->socketCodeTable(tableName) ==
        &NullSocketCodeTable::instance()) {
        throw ObjectStateLoadingException(
            __FILE__, __LINE__, procName);
        } else {
        setSocketCodes(bem->socketCodeTable(tableName));
        }
    }
 
    } catch (const Exception& exception) {
    throw ObjectStateLoadingException(
        __FILE__, __LINE__, procName, exception.errorMessage());
    }
 
    setParent(NULL);
    parent.addSocketEncoding(*this);
    setParent(&parent);
}

References SlotField::addSocketEncoding(), Exception::errorMessage(), ObjectState::hasAttribute(), NullSocketCodeTable::instance(), name_, OSKEY_SC_TABLE, OSKEY_SOCKET_NAME, MoveSlot::parent(), SlotField::parent(), parent(), Encoding::setParent(), setSocketCodes(), BinaryEncoding::socketCodeTable(), and ObjectState::stringAttribute().

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~SocketEncoding()

SocketEncoding::~SocketEncoding ( )

virtual

The destructor.

Definition at line 119 of file SocketEncoding.cc.

{ detachFromParent(); }

References detachFromParent().

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Member Function Documentation

bitPosition()

int SocketEncoding::bitPosition ( ) const

virtual

Returns always 0.

Returns

The position.

Implements Encoding.

Definition at line 291 of file SocketEncoding.cc.

                                  {
    return 0;
}

detachFromParent()

void SocketEncoding::detachFromParent ( )

private

Removes itself from the parent slot field.

Definition at line 316 of file SocketEncoding.cc.

                                 {
    if (this->parent() == nullptr) {
        return;
    }
    SlotField* parent = this->parent();
    setParent(nullptr);
    parent->removeSocketEncoding(*this);
}

References parent(), SlotField::removeSocketEncoding(), and Encoding::setParent().

Referenced by setEncoding(), and ~SocketEncoding().

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hasSocketCodes()

bool SocketEncoding::hasSocketCodes

(

)

const

Tells whether the socket encoding contains a socket code table.

Returns

True if the socket encoding contains a socket code table, otherwise false.

Definition at line 177 of file SocketEncoding.cc.

                                     {
    return socketCodes_ != NULL;
}

References socketCodes_.

Referenced by BEMValidator::checkDestinationField(), BEMValidator::checkSocketCodeTable(), BEMValidator::checkSourceField(), CodeCompressorPlugin::encodeFUTerminal(), CodeCompressorPlugin::encodeIUTerminal(), CodeCompressorPlugin::encodeRFTerminal(), printSlotFieldEncodings(), saveState(), socketCodes(), width(), DefaultDecoderGenerator::writeControlRulesOfFUInputPort(), DefaultDecoderGenerator::writeControlRulesOfFUOutputPort(), DefaultDecoderGenerator::writeControlRulesOfRFReadPort(), and DefaultDecoderGenerator::writeControlRulesOfRFWritePort().

parent()

SlotField * SocketEncoding::parent

(

)

const

Returns the parent slot field.

Returns

The parent slot field.

Definition at line 127 of file SocketEncoding.cc.

                             {
    InstructionField* parent = Encoding::parent();
    if (parent != NULL) {
        SlotField* sField = dynamic_cast<SlotField*>(parent);
        assert(sField != NULL);
        return sField;
    } else {
        return NULL;
    }
}

References assert, Encoding::parent(), and parent().

Referenced by SlotField::addSocketEncoding(), BEMValidator::checkSocketCodeTable(), detachFromParent(), parent(), DefaultDecoderGenerator::portCodeCondition(), SlotField::removeSocketEncoding(), DefaultDecoderGenerator::rfOpcodeFromSrcOrDstField(), setEncoding(), socketCodePosition(), SocketEncoding(), SocketEncoding(), socketIDPosition(), and DefaultDecoderGenerator::writeControlRulesOfFUInputPort().

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saveState()

ObjectState * SocketEncoding::saveState ( ) const

virtual

Saves the state of the socket encoding to an ObjectState instance.

Returns

The newly created ObjectState instance.

Reimplemented from Encoding.

Definition at line 302 of file SocketEncoding.cc.

                                {
    ObjectState* state = Encoding::saveState();
    state->setName(OSNAME_SOCKET_ENCODING);
    state->setAttribute(OSKEY_SOCKET_NAME, socketName());
    if (hasSocketCodes()) {
        state->setAttribute(OSKEY_SC_TABLE, socketCodes().name());
    }
    return state;
}

References hasSocketCodes(), OSKEY_SC_TABLE, OSKEY_SOCKET_NAME, OSNAME_SOCKET_ENCODING, Encoding::saveState(), ObjectState::setAttribute(), ObjectState::setName(), socketCodes(), and socketName().

Referenced by SlotField::saveState().

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setEncoding()

void SocketEncoding::setEncoding	(	unsigned int	encoding,
		unsigned int	extraBits
	)

Sets new encoding.

Parameters

encoding	The encoding.
extraBits	The extrabits of the encoding.

Exceptions

ObjectAlreadyExists

If the parent slot field already has an encoding for the same socket, or if the given encoding is ambiguous with another encoding in the parent slot field.

Definition at line 223 of file SocketEncoding.cc.

                                                                         {
    SlotField* parent = this->parent();
    unsigned int oldEncoding = this->encoding();
    unsigned int oldExtrabits = this->extraBits();
    detachFromParent();
    Encoding::setEncoding(encoding, extraBits);
    try {
        parent->addSocketEncoding(*this);
    } catch (ObjectAlreadyExists& e) {
        Encoding::setEncoding(oldEncoding, oldExtrabits);
        parent->addSocketEncoding(*this);
    }
    setParent(parent);
}

References SlotField::addSocketEncoding(), detachFromParent(), Encoding::encoding(), Encoding::extraBits(), parent(), Encoding::setEncoding(), and Encoding::setParent().

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setSocketCodes()

void SocketEncoding::setSocketCodes

(

SocketCodeTable &

codeTable

)

Attaches a set of socket codes to the socket encoding.

Parameters

codeTable

The socket code table to be attached.

Definition at line 156 of file SocketEncoding.cc.

                                                         {
    socketCodes_ = &codeTable;
}

References socketCodes_.

Referenced by BEMGenerator::addEncodings(), BEMGenerator::addEncodings(), and SocketEncoding().

socketCodePosition()

int SocketEncoding::socketCodePosition

(

)

const

Returns the position of the socket code within the slot field.

Definition at line 203 of file SocketEncoding.cc.

                                         {
    if (parent()->componentIDPosition() == BinaryEncoding::RIGHT) {
        return parent()->width() - parent()->extraBits() -
               socketCodes().width();
    } else {
        return 0;
    }
}

References InstructionField::extraBits(), parent(), BinaryEncoding::RIGHT, socketCodes(), SlotField::width(), and SocketCodeTable::width().

Referenced by BEMTester::conflictsWithDestinationEncodings(), and BEMTester::conflictsWithSourceEncodings().

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socketCodes()

SocketCodeTable & SocketEncoding::socketCodes

(

)

const

Returns the socket code table.

Returns a NullSocketCodeTable instance if the socket does not have a socket code table set.

Returns

The socket code table.

Definition at line 191 of file SocketEncoding.cc.

                                  {
    if (!hasSocketCodes()) {
    return NullSocketCodeTable::instance();
    } else {
    return *socketCodes_;
    }
}

References hasSocketCodes(), NullSocketCodeTable::instance(), and socketCodes_.

Referenced by BEMValidator::checkSocketCodeTable(), BEMTester::conflictsWithDestinationEncodings(), BEMTester::conflictsWithSourceEncodings(), CodeCompressorPlugin::encodeFUTerminal(), CodeCompressorPlugin::encodeIUTerminal(), CodeCompressorPlugin::encodeRFTerminal(), printSlotFieldEncodings(), SocketCodeTable::removeReferences(), DefaultDecoderGenerator::rfOpcodeFromSrcOrDstField(), saveState(), socketCodePosition(), width(), DefaultDecoderGenerator::writeControlRulesOfFUInputPort(), DefaultDecoderGenerator::writeControlRulesOfFUOutputPort(), DefaultDecoderGenerator::writeControlRulesOfRFReadPort(), and DefaultDecoderGenerator::writeControlRulesOfRFWritePort().

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socketIDPosition()

int SocketEncoding::socketIDPosition

(

)

const

Returns the position of the socket ID within the slot field.

The position is always 0 if socket ID is in the right end of the field. However, if socket code is in the right end of the field, the position of the socket ID depends on the bit width of the socket code.

Returns

The position of the socket ID.

Definition at line 249 of file SocketEncoding.cc.

                                       {
    if (parent()->componentIDPosition() == BinaryEncoding::RIGHT) {
        return 0;
    } else {
        return parent()->width() - parent()->extraBits() - socketIDWidth();
    }
}

References InstructionField::extraBits(), parent(), BinaryEncoding::RIGHT, socketIDWidth(), and SlotField::width().

Referenced by BEMTester::conflictsWithDestinationEncodings(), BEMTester::conflictsWithSourceEncodings(), DefaultDecoderGenerator::socketEncodingCondition(), and BEMTester::splitEncodingTo().

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socketIDWidth()

int SocketEncoding::socketIDWidth

(

)

const

Returns the bit width of the fixed part of the socket encoding.

Returns

The bit width.

Definition at line 264 of file SocketEncoding.cc.

                                    {
    return MathTools::bitLength(encoding()) + extraBits();
}

References MathTools::bitLength(), Encoding::encoding(), and Encoding::extraBits().

Referenced by BEMTester::canAddComponentEncoding(), BEMTester::conflictsWithDestinationEncodings(), BEMTester::conflictsWithSourceEncodings(), CodeCompressorPlugin::encodeFUTerminal(), CodeCompressorPlugin::encodeIUTerminal(), CodeCompressorPlugin::encodeRFTerminal(), DefaultDecoderGenerator::portCodeCondition(), printSlotFieldEncodings(), DefaultDecoderGenerator::socketEncodingCondition(), socketIDPosition(), BEMTester::splitEncodingTo(), width(), and DefaultDecoderGenerator::writeControlRulesOfFUInputPort().

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socketName()

std::string SocketEncoding::socketName

(

)

const

Returns the name of the socket.

Returns

The name of the socket.

Definition at line 145 of file SocketEncoding.cc.

                                 {
    return name_;
}

References name_.

Referenced by SlotField::addSocketEncoding(), BEMValidator::checkSocketCodeTable(), SlotField::hasSocketEncoding(), BEMValidator::needsSocketCodeTable(), printSlotFieldEncodings(), saveState(), and SlotField::socketEncoding().

unsetSocketCodes()

void SocketEncoding::unsetSocketCodes

(

)

Removes the socket codes from the socket encoding.

Definition at line 165 of file SocketEncoding.cc.

                                 {
    socketCodes_ = NULL;
}

References socketCodes_.

Referenced by SocketCodeTable::removeReferences().

width()

int SocketEncoding::width ( ) const

virtual

Returns the number of bits required to encode all the destinations of this socket.

Returns

The number of bits.

Reimplemented from Encoding.

Definition at line 276 of file SocketEncoding.cc.

                            {
    int width = socketIDWidth();
    if (hasSocketCodes()) {
    width += socketCodes().width();
    }
    return width;
}

References hasSocketCodes(), socketCodes(), socketIDWidth(), SocketCodeTable::width(), and width().

Referenced by printSlotFieldEncodings(), SlotField::width(), and width().

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Member Data Documentation

name_

std::string SocketEncoding::name_

private

Name of the socket.

Definition at line 90 of file SocketEncoding.hh.

Referenced by SocketEncoding(), and socketName().

OSKEY_SC_TABLE

const std::string SocketEncoding::OSKEY_SC_TABLE = "sc_table"

static

ObjectState attribute key for the name of the socket code table.

Definition at line 83 of file SocketEncoding.hh.

Referenced by saveState(), BEMSerializer::slotFieldToFile(), BEMSerializer::slotFieldToOM(), and SocketEncoding().

OSKEY_SOCKET_NAME

const std::string SocketEncoding::OSKEY_SOCKET_NAME = "socket_name"

static

ObjectState attribute key for the name of the socket.

Definition at line 81 of file SocketEncoding.hh.

Referenced by saveState(), BEMSerializer::slotFieldToFile(), BEMSerializer::slotFieldToOM(), and SocketEncoding().

OSNAME_SOCKET_ENCODING

const std::string SocketEncoding::OSNAME_SOCKET_ENCODING = "socket_encoding"

static

ObjectState name for socket encoding.

Definition at line 79 of file SocketEncoding.hh.

Referenced by SlotField::loadState(), saveState(), BEMSerializer::slotFieldToFile(), and BEMSerializer::slotFieldToOM().

socketCodes_

SocketCodeTable* SocketEncoding::socketCodes_

private

Socket code table.

Definition at line 92 of file SocketEncoding.hh.

Referenced by hasSocketCodes(), setSocketCodes(), socketCodes(), and unsetSocketCodes().

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

• SocketEncoding.hh
• SocketEncoding.cc