Syntax

(CLOS:EQL-SPECIALIZER-OBJECT eql-specializer)

Arguments

eql-specializer

an EQL specializer metaobject.

Value

an object.

Purpose

This function returns the object associated with eql-specializer during initialization. The value is guaranteed to be EQL to the value originally passed to CLOS:INTERN-EQL-SPECIALIZER, but it is not necessarily EQ to that value.

This function SIGNALs an ERROR if eql-specializer is not an EQL specializer.

Syntax

(CLOS:INTERN-EQL-SPECIALIZER object)

Arguments

object

any Lisp object.

Values

The EQL specializer metaobject for object.

Purpose

This function returns the unique EQL specializer metaobject for object, creating one if necessary. Two calls to CLOS:INTERN-EQL-SPECIALIZER with EQL arguments will return the same (i.e., EQ) value.

Syntax

(CLOS:SPECIALIZER-DIRECT-METHODS specializer)

Arguments

specializer

a specializer metaobject.

Value

A possibly empty list of method metaobjects.

Purpose

This generic function returns the possibly empty set of those methods, connected to generic functions, which have specializer as a specializer. The elements of this set are method metaobjects. This value is maintained by the generic functions CLOS:ADD-DIRECT-METHOD and CLOS:REMOVE-DIRECT-METHOD.

Methods

(CLOS:SPECIALIZER-DIRECT-METHODS (specializer CLASS))

No behavior is specified for this method beyond that which is specified for the generic function.

This method cannot be overridden unless the following methods are overridden as well:

• CLOS:ADD-DIRECT-METHOD (CLASS METHOD)
• CLOS:REMOVE-DIRECT-METHOD (CLASS METHOD)
• CLOS:SPECIALIZER-DIRECT-GENERIC-FUNCTIONS (CLASS)

(CLOS:SPECIALIZER-DIRECT-METHODS (specializer CLOS:EQL-SPECIALIZER))

No behavior is specified for this method beyond that which is specified for the generic function.

Syntax

(CLOS:SPECIALIZER-DIRECT-GENERIC-FUNCTIONS specializer)

Arguments

specializer

a specializer metaobject.

Value

A possibly empty list of generic function metaobjects.

Purpose

This generic function returns the possibly empty set of those generic functions which have a method with specializer as a specializer. The elements of this set are generic function metaobjects. This value is maintained by the generic functions CLOS:ADD-DIRECT-METHOD and CLOS:REMOVE-DIRECT-METHOD.

Methods

(CLOS:SPECIALIZER-DIRECT-GENERIC-FUNCTIONS (specializer CLASS))

No behavior is specified for this method beyond that which is specified for the generic function.

This method cannot be overridden unless the following methods are overridden as well:

• CLOS:ADD-DIRECT-METHOD (CLASS METHOD)
• CLOS:REMOVE-DIRECT-METHOD (CLASS METHOD)
• CLOS:SPECIALIZER-DIRECT-METHODS (CLASS)

(CLOS:SPECIALIZER-DIRECT-GENERIC-FUNCTIONS (specializer CLOS:EQL-SPECIALIZER))

No behavior is specified for this method beyond that which is specified for the generic function.

Syntax

(CLOS:ADD-DIRECT-METHOD specializer method)

Arguments

specializer

a specializer metaobject.

method

a method metaobject.

Values

The values returned by this generic function are unspecified.

Purpose

This generic function is called to maintain a set of backpointers from a specializer to the set of methods specialized to it. If method is already in the set, it is not added again (no ERROR is SIGNALed).

This set can be accessed as a list by calling the generic function CLOS:SPECIALIZER-DIRECT-METHODS. Methods are removed from the set by CLOS:REMOVE-DIRECT-METHOD.

The generic function CLOS:ADD-DIRECT-METHOD is called by ADD-METHOD whenever a method is added to a generic function. It is called once for each of the specializers of the method. Note that in cases where a specializer appears more than once in the specializers of a method, this generic function will be called more than once with the same specializer as argument.

The results are undefined if the specializer argument is not one of the specializers of the method argument.

Methods

(CLOS:ADD-DIRECT-METHOD (specializer CLASS) (method METHOD))

This method implements the behavior of the generic function for class specializers.

No behavior is specified for this method beyond that which is specified for the generic function.

This method cannot be overridden unless the following methods are overridden as well:

• CLOS:REMOVE-DIRECT-METHOD (CLASS METHOD)
• CLOS:SPECIALIZER-DIRECT-GENERIC-FUNCTIONS (CLASS)
• CLOS:SPECIALIZER-DIRECT-METHODS (CLASS)

(CLOS:ADD-DIRECT-METHOD (specializer CLOS:EQL-SPECIALIZER) (method METHOD))

This method implements the behavior of the generic function for EQL specializers.

No behavior is specified for this method beyond that which is specified for the generic function.

Syntax

(CLOS:REMOVE-DIRECT-METHOD specializer method)

Arguments

specializer

a specializer metaobject.

method

a method metaobject.

Values

The values returned by this generic function are unspecified.

Purpose

This generic function is called to maintain a set of backpointers from a specializer to the set of methods specialized to it. If method is in the set it is removed. If it is not, no ERROR is SIGNALed.

This set can be accessed as a list by calling the generic function CLOS:SPECIALIZER-DIRECT-METHODS. Methods are added to the set by CLOS:ADD-DIRECT-METHOD.

The generic function CLOS:REMOVE-DIRECT-METHOD is called by REMOVE-METHOD whenever a method is removed from a generic function. It is called once for each of the specializers of the method. Note that in cases where a specializer appears more than once in the specializers of a method, this generic function will be called more than once with the same specializer as argument.

The results are undefined if the specializer argument is not one of the specializers of the method argument.

Methods

(CLOS:REMOVE-DIRECT-METHOD (specializer CLASS) (method METHOD))

This method implements the behavior of the generic function for class specializers.

No behavior is specified for this method beyond that which is specified for the generic function.

This method cannot be overridden unless the following methods are overridden as well:

• CLOS:ADD-DIRECT-METHOD (CLASS METHOD)
• CLOS:SPECIALIZER-DIRECT-GENERIC-FUNCTIONS (CLASS)
• CLOS:SPECIALIZER-DIRECT-METHODS (CLASS)

(CLOS:REMOVE-DIRECT-METHOD (specializer CLOS:EQL-SPECIALIZER) (method METHOD))

This method implements the behavior of the generic function for EQL specializers.

No behavior is specified for this method beyond that which is specified for the generic function.