NullInstructionField Class Reference

#include <NullInstructionField.hh>

Inheritance diagram for NullInstructionField:

Collaboration diagram for NullInstructionField:

Public Member Functions
virtual int	childFieldCount () const
virtual InstructionField &	childField (int position) const
virtual int	width () const
Public Member Functions inherited from InstructionField
virtual	~InstructionField ()
InstructionField *	parent () const
int	bitPosition () const
int	relativePosition () const
virtual void	setRelativePosition (int position)
void	setExtraBits (int bits)
int	extraBits () const
virtual void	loadState (const ObjectState *state)
virtual ObjectState *	saveState () const
Public Member Functions inherited from Serializable
virtual	~Serializable ()

Static Public Member Functions
static NullInstructionField &	instance ()

Private Member Functions
	NullInstructionField ()
virtual	~NullInstructionField ()

Static Private Attributes
static NullInstructionField	instance_
	The only instance.

Additional Inherited Members
Static Public Attributes inherited from InstructionField
static const std::string	OSNAME_INSTRUCTION_FIELD = "instr_field"
	ObjectState name for instruction field.
static const std::string	OSKEY_EXTRA_BITS = "extra_bits"
	ObjectState attribute key for the number of extra bits.
static const std::string	OSKEY_POSITION = "position"
	ObjectState attribute key for the relative position of the field.
Protected Member Functions inherited from InstructionField
	InstructionField (InstructionField *parent)
	InstructionField (const ObjectState *state, InstructionField *parent)
void	setParent (InstructionField *parent)
Static Protected Member Functions inherited from InstructionField
static void	reorderSubfields (ObjectState *state)

Detailed Description

A null version of instruction field.

Definition at line 41 of file NullInstructionField.hh.

Constructor & Destructor Documentation

NullInstructionField()

NullInstructionField::NullInstructionField ( )

private

The constructor.

Definition at line 45 of file NullInstructionField.cc.

                                           : InstructionField(NULL) {
}

~NullInstructionField()

NullInstructionField::~NullInstructionField ( )

privatevirtual

The destructor.

Definition at line 52 of file NullInstructionField.cc.

                                            {
}

Member Function Documentation

childField()

InstructionField & NullInstructionField::childField ( int  position ) const

virtual

Always throws OutOfRange exception.

Returns

Never returns.

Exceptions

OutOfRange

Always thrown.

Reimplemented from InstructionField.

Definition at line 85 of file NullInstructionField.cc.

                                          {
    const string procName = "NullInstructionField::childField";
    throw OutOfRange(__FILE__, __LINE__, procName);
}

childFieldCount()

int NullInstructionField::childFieldCount ( ) const

virtual

Always returns 0.

Returns

0.

Implements InstructionField.

Definition at line 73 of file NullInstructionField.cc.

                                            {
    return 0;
}

instance()

NullInstructionField & NullInstructionField::instance ( )

static

Returns the only instance of NullInstructionField.

Returns

The only instance of NullInstructionField.

Definition at line 62 of file NullInstructionField.cc.

                               {
    return instance_;
}

References instance_.

Referenced by BinaryEncoding::childField(), InstructionField::childField(), MoveSlot::childField(), and InstructionField::setRelativePosition().

width()

int NullInstructionField::width ( ) const

virtual

Always returns 0.

Returns

0.

Implements InstructionField.

Definition at line 96 of file NullInstructionField.cc.

                                  {
    return 0;
}

Member Data Documentation

instance_

NullInstructionField NullInstructionField::instance_

staticprivate

The only instance.

Definition at line 54 of file NullInstructionField.hh.

Referenced by instance().

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

• NullInstructionField.hh
• NullInstructionField.cc