- Argument Conventions
- Bugs and Limitations
- Version history
INSTANCE is a coops-instance.
SLOT is a symbol.
INITFORM is 'SLOT OBJECT.
OBJECT is a Scheme object.
CLASS is a coops class.
GENERIC is a coops generic-procedure.
METHOD is a coops generic-procedure method. Do not apply any but the supplied API to instances of this type!
coops usage extensions.
The slot accessor recursion.
- (slot@ INSTANCE SLOT ...) --> *syntax
Returns the slot value of the N'th named slot from INSTANCE.
- (slot@ INSTANCE SLOT ... = OBJECT)syntax
Sets the slot value of the N'th named slot of INSTANCE to OBJECT.
(import coops coops-extras) ;Needlessly complex for example (define-class <first> () (next)) (define-class <second> (<first>) ()) (define-class <third> (<second>) ()) (define 1st (make <first> 'next (make <second> 'next (make <third> 'next "the end")))) (slot@ 1st next next next) ;=> "the end" (slot@ 1st next next next = "still the end") (slot@ 1st next next next) ;=> "still the end"
(From '@' macro by Dan Muresan.)
- (make-copy INSTANCE [INITFORM ...]) --> coops-instanceprocedure
Returns a copy of the object INSTANCE, except where an INITFORM overrides an existing SLOT value of the INSTANCE. The copy is a shallow copy that shares values with INSTANCE.
coops object internals.
- describe-object INSTANCE #!optional OUT current-output-portprocedure
Prints information about the INSTANCE to the output-port OUT.
describe-object is a generic-procedure specializing the first argument.
A more detailed print-object for use in a REPL.
- (describe-object-slot INSTANCE SLOT [NAME-MAXLEN 32 [OUT (current-output-port)]])procedure
Prints information about the INSTANCE's SLOT to the output-port OUT. Does not append a (newline).
NAME-MAXLEN is the maximum number of single-width characters in a slotname.
coops predicates and read accessors.
Some TinyCLOS inspired property readers.
- instance-of? OBJECT CLASSprocedure
Is OBJECT an instance of the CLASS?
- class? OBJECTprocedure
Is OBJECT an instance of the <standard-class>?
- instance? OBJECTprocedure
Is OBJECT an instance of a basic class. Neither an instance of the <standard-class> or a primitive such as boolean or vector?
- primitive-instance? OBJECTprocedure
Is OBJECT an instance of the <primitive-object> class or #t?
Note #t is the default class, without the coops-primitive-objects module.
- generic? OBJECTprocedure
Synonym for generic-procedure?.
- method? OBJECTprocedure
Is OBJECT a method of a generic-procedure?
Only useful in the context of a generic-*-methods procedure result.
- class-precedence-list CLASSprocedure
Returns the superclasses of CLASS.
- class-slots CLASSprocedure
Returns the slot names of CLASS.
- class-direct-supers CLASSprocedure
Returns the uninherited superclasses of CLASS.
- class-direct-slots CLASSprocedure
Returns the uninherited slot names of CLASS.
- generic-anonymous? GENERICprocedure
Is GENERIC an unnamed generic-procedure.
- generic-name GENERICprocedure
Returns the name of GENERIC. The name is #f for an anonymous generic procedure.
- generic-specialized-arguments GENERICprocedure
The arguments that GENERIC is specialized upon.
- generic-primary-methods GENERICprocedure
Returns the list of #:primary methods for GENERIC.
- generic-before-methods GENERICprocedure
Returns the list of #:before methods for GENERIC.
- generic-after-methods GENERICprocedure
Returns the list of #:after methods for GENERIC.
- generic-around-methods GENERICprocedure
Returns the list of #:around methods for GENERIC.
- method-specializers METHODprocedure
Returns the classes that specialize METHOD.
Throws an assertion error when slot not actually list.
- method-procedure METHODprocedure
Returns the procedure for METHOD.
Throws an assertion error when slot not actually procedure.
(import coops coops-introspection) (define (print-methods generic) (for-each (lambda (m) (print (generic-name generic) " specialized by " (method-specializers m) " as " (method-procedure m))) (generic-primary-methods generic)) )
- The introspection API is brittle, especially the generics portion.
Suggested only for use during REPL development with coops.
- Fix method?, instance? & primitive-instance?.
- make-copy uses fresh slots.
- Bug #1700.
- method-specializers & method-procedure type matches documentation.
- describe in own module.
- CHICKEN 5 release.
- Add make-copy.
- Collect TinyCLOS synonyms in own module: coops-introspection-tinyclos; reexport by coops-utils DEPRECATED.
- Remove test, remove inlines.
- Add test, fix library requirement.
- Fix make/copy for objects with uninitialized slots, thanks to Sandra Snan
- Fix class-direct-supers and class-direct-slots, minor internal optimization.
- Release for coops 1.92
- * UNMAINTAINED *
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