NullPortState Class Reference

#include <PortState.hh>

Inheritance diagram for NullPortState:

Collaboration diagram for NullPortState:

Public Member Functions
virtual	~NullPortState ()
virtual void	setValue (const SimValue &value)
virtual const SimValue &	value () const
virtual FUState &	parent () const
Public Member Functions inherited from PortState
	PortState (FUState &parent, int width)
	PortState (FUState &parent, SimValue &sharedRegister)
virtual	~PortState ()
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 NullPortState &	instance ()

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

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

Additional Inherited Members
Protected Attributes inherited from PortState
FUState *	parent_
	Parent of the port. More...
Protected Attributes inherited from RegisterState
SimValue &	value_
	Value of the RegisterState. More...

Detailed Description

Models non-existing PortState.

Definition at line 76 of file PortState.hh.

Constructor & Destructor Documentation

~NullPortState()

NullPortState::~NullPortState ( )

virtual

Destructor.

Definition at line 112 of file PortState.cc.

                              {
}

NullPortState() [1/2]

NullPortState::NullPortState ( )

private

Constructor.

Definition at line 106 of file PortState.cc.

                             : PortState(NullFUState::instance(), 0) {
}

Referenced by instance().

NullPortState() [2/2]

NullPortState::NullPortState ( const NullPortState &  )

private

Copying not allowed.

Member Function Documentation

instance()

NullPortState & NullPortState::instance ( )

static

Returns the instance of NullPortState.

Returns

The instance of NullPortState.

Definition at line 96 of file PortState.cc.

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

References instance_, and NullPortState().

Referenced by MachineStateBuilder::addVirtualOpcodeSettingPortsToFU(), MachineStateBuilder::buildMachineState(), SimulatorFrontend::findPort(), FUTestbenchGenerator::parseFuPorts(), MachineState::portState(), and SimProgramBuilder::processBidirTerminal().

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operator=()

NullPortState& NullPortState::operator= ( const NullPortState &  )

private

Assignment not allowed.

parent()

FUState & NullPortState::parent ( ) const

virtual

Aborts the program with error message.

Returns

Never returns.

Reimplemented from PortState.

Definition at line 140 of file PortState.cc.

                            {
    Application::abortWithError("parent()");
    return NullFUState::instance();
}

References abortWithError, and NullFUState::instance().

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setValue()

void NullPortState::setValue ( const SimValue &  value )

virtual

Aborts the program with error message.

Reimplemented from RegisterState.

Definition at line 119 of file PortState.cc.

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

References abortWithError.

value()

const SimValue & NullPortState::value ( ) const

virtual

Aborts the program with error message.

Returns

Never returns.

Reimplemented from RegisterState.

Definition at line 129 of file PortState.cc.

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

References abortWithError, and NullSimValue::instance().

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Member Data Documentation

instance_

NullPortState * NullPortState::instance_ = NULL

staticprivate

Unique instance of NullPortState class.

Definition at line 94 of file PortState.hh.

Referenced by instance().

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

• PortState.hh
• PortState.cc