diff options
Diffstat (limited to 'recobj.scm')
| -rw-r--r-- | recobj.scm | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/recobj.scm b/recobj.scm deleted file mode 100644 index caf55a6..0000000 --- a/recobj.scm +++ /dev/null @@ -1,54 +0,0 @@ -;;; "recobj.scm" Records implemented as objects. -;;;From: whumeniu@datap.ca (Wade Humeniuk) - -(require 'object) - -(define record-type-name (make-generic-method)) -(define record-accessor (make-generic-method)) -(define record-modifier (make-generic-method)) -(define record? (make-generic-predicate)) -(define record-constructor (make-generic-method)) - -(define (make-record-type type-name field-names) - (define self (make-object)) - - (make-method! self record-type-name - (lambda (self) - type-name)) - (make-method! self record-accessor - (lambda (self field-name) - (let ((index (comlist:position field-name field-names))) - (if (not index) - (slib:error "record-accessor: invalid field-name argument." - field-name)) - (lambda (obj) - (record-accessor obj index))))) - - (make-method! self record-modifier - (lambda (self field) - (let ((index (comlist:position field field-names))) - (if (not index) - (slib:error "record-accessor: invalid field-name argument." - field-name)) - (lambda (obj newval) - (record-modifier obj index newval))))) - - (make-method! self record? (lambda (self) #t)) - - (make-method! self record-constructor - (lambda (class . field-values) - (let ((values (apply vector field-values))) - (define self (make-object)) - (make-method! self record-accessor - (lambda (self index) - (vector-ref values index))) - (make-method! self record-modifier - (lambda (self index newval) - (vector-set! values index newval))) - (make-method! self record-type-name - (lambda (self) (record-type-name class))) - self))) - self) - -(provide 'record-object) -(provide 'record)
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