InvalidObject Class Reference

This Object represents an invalid object. More...

Inheritance diagram for InvalidObject:

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Collaboration diagram for InvalidObject:

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List of all members.

Public Member Functions
	InvalidObject ()
	Construct a new InvalidObject.
InvalidObject *	copy () const
	Returns a copy of this Object.
const ObjectType *	type () const
	Returns the lowermost ObjectType that this object is an instantiation of.
bool	equals (const Object &rhs) const
	Returns true if this Object is equal to rhs.
Static Public Member Functions
static const ObjectType *	stype ()
	Returns the ObjectType representing the InvalidObject type.

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Detailed Description

This Object represents an invalid object.

If a calculation fails, then often an InvalidObject is returned, indicating that the generated object is invalid.

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Member Function Documentation

InvalidObject* InvalidObject::copy

(

)

const [virtual]

Returns a copy of this Object.

The copy is an exact copy. Changes to the copy don't affect the original.

Implements Object.

const ObjectType* InvalidObject::type

(

)

const [virtual]

Returns the lowermost ObjectType that this object is an instantiation of.

E.g. if you want to get a string containing the internal name of the type of an object, you can do:

 tn = object.type().internalName()

Implements Object.

bool InvalidObject::equals

(

const Object &

rhs

)

const [virtual]

Returns true if this Object is equal to rhs.

This function checks whether rhs is of the same Object type, and whether it contains the same data as this Object.

Implements Object.