NullBusState Class Reference

#include <BusState.hh>

Inheritance diagram for NullBusState:

Collaboration diagram for NullBusState:

Public Member Functions
virtual	~NullBusState ()
virtual void	setValue (const SimValue &value)
virtual const SimValue &	value () const
Public Member Functions inherited from BusState
	BusState (int width)
virtual	~BusState ()
void	setValueInlined (const SimValue &value)
void	clear ()
void	setSquashed (bool isSquashed)
bool	isSquashed () const
int	width () const
Public Member Functions inherited from RegisterState
	RegisterState (int width, bool constantZero=false)
	RegisterState (SimValue &sharedRegister)
virtual	~RegisterState ()
Public Member Functions inherited from StateData
	StateData ()
virtual	~StateData ()
Public Member Functions inherited from WritableState
	WritableState ()
virtual	~WritableState ()
Public Member Functions inherited from ReadableState
	ReadableState ()
virtual	~ReadableState ()

Static Public Member Functions
static NullBusState &	instance ()

Private Member Functions
	NullBusState ()
	NullBusState (const NullBusState &)
	Copying not allowed. More...
NullBusState &	operator= (const NullBusState &)
	Assignment not allowed. More...

Static Private Attributes
static NullBusState *	instance_ = NULL
	Unique instance of NullBusState. More...

Additional Inherited Members
Protected Attributes inherited from RegisterState
SimValue &	value_
	Value of the RegisterState. More...

Detailed Description

Models null BusState object.

Definition at line 85 of file BusState.hh.

Constructor & Destructor Documentation

~NullBusState()

NullBusState::~NullBusState ( )

virtual

Destructor.

Definition at line 128 of file BusState.cc.

                            {
}

NullBusState() [1/2]

NullBusState::NullBusState ( )

private

Constructor.

Definition at line 122 of file BusState.cc.

                           : BusState(0) {
}

Referenced by instance().

NullBusState() [2/2]

NullBusState::NullBusState ( const NullBusState &  )

private

Copying not allowed.

Member Function Documentation

instance()

NullBusState & NullBusState::instance ( )

static

Returns the instance of NullBusState.

Returns

The instance of NullBusState.

Definition at line 112 of file BusState.cc.

                       {
    if (instance_ == NULL) {
        instance_ = new NullBusState();
    }
    return *instance_;
}

References instance_, and NullBusState().

Referenced by MachineState::busState(), and SimProgramBuilder::processMove().

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operator=()

NullBusState& NullBusState::operator= ( const NullBusState &  )

private

Assignment not allowed.

setValue()

void NullBusState::setValue ( const SimValue &  value )

virtual

Aborts the program with error message.

Reimplemented from BusState.

Definition at line 135 of file BusState.cc.

                                      {
    Application::abortWithError("setValue()");
}

References abortWithError.

value()

const SimValue & NullBusState::value ( ) const

virtual

Aborts the program with error message.

Returns

Never returns.

Reimplemented from RegisterState.

Definition at line 145 of file BusState.cc.

                          {
    Application::abortWithError("value()");
    return NullSimValue::instance();
}

References abortWithError, and NullSimValue::instance().

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Member Data Documentation

instance_

NullBusState * NullBusState::instance_ = NULL

staticprivate

Unique instance of NullBusState.

Definition at line 102 of file BusState.hh.

Referenced by instance().

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

• BusState.hh
• BusState.cc