return alists; refactor structure

1 files changed, 0 insertions, 136 deletions

diff --git a/srfi/externals.scm b/srfi/externals.scm
deleted file mode 100644
index f1045e5..0000000
--- a/srfi/externals.scm
+++ /dev/null
@@ -1,136 +0,0 @@
-;; procedure definitions that don't rely on concrete implementations
-
-(define-record-type <dto>
-  (make-dto-private procvec)
-  dto?
-  (procvec procvec))
-
-(define-record-type <dto-err>
-  (make-dictionary-error message irritants)
-  dictionary-error?
-  (message dictionary-message)
-  (irritants dictionary-irritants))
-
-;; shorthand access to dto procedure by index
-(define-syntax dto-ref-stx
-  (syntax-rules ()
-    ((_ dto index)
-     (begin
-       (vector-ref (procvec dto) index)))))
-
-;; shorthand to define proc with using proc index
-(define-syntax define/dict-proc
-  (syntax-rules ()
-    ((_ proc index)
-     (define (proc dto . args)
-       (assume (dto? dto))
-       (apply (dto-ref-stx dto index) dto args)))))
-
-(define/dict-proc dictionary? dictionary?-id)
-(define/dict-proc dict-empty? dict-empty?-id)
-(define/dict-proc dict-contains? dict-contains?-id)
-(define/dict-proc dict-pure? dict-pure?-id)
-(define/dict-proc dict=? dict=?-id)
-
-(define dict-ref
-  (case-lambda
-    ((dto dict key)
-     (dict-ref dto dict key
-               (lambda () (error "Key not found in dictionary" dict key))
-               values))
-
-    ((dto dict key failure)
-     (dict-ref dto dict key failure values))
-
-    ((dto dict key failure success)
-     (assume (dto? dto))
-     ((dto-ref-stx dto dict-ref-id) dto dict key failure success))))
-
-(define/dict-proc dict-ref/default dict-ref/default-id)
-(define/dict-proc dict-set dict-set-id)
-(define/dict-proc dict-adjoin dict-adjoin-id)
-(define/dict-proc dict-delete dict-delete-id)
-(define/dict-proc dict-delete-all dict-delete-all-id)
-(define/dict-proc dict-replace dict-replace-id)
-(define/dict-proc dict-intern dict-intern-id)
-
-(define dict-update
-  (case-lambda
-    ((dto dict key updater)
-     (dict-update dto dict key updater
-                  (lambda () (error "Key not found in dictionary" dict key))
-                  values))
-
-    ((dto dict key updater failure)
-     (dict-update dto dict key  updater failure values))
-
-    ((dto dict key updater failure success)
-     (assume (dto? dto))
-     ((dto-ref-stx dto dict-update-id) dto dict key updater failure success))))
-
-(define/dict-proc dict-update/default dict-update/default-id)
-(define/dict-proc dict-pop dict-pop-id)
-(define/dict-proc dict-map dict-map-id)
-(define/dict-proc dict-filter dict-filter-id)
-(define/dict-proc dict-remove dict-remove-id)
-(define/dict-proc dict-find-update dict-find-update-id)
-(define/dict-proc dict-size dict-size-id)
-(define/dict-proc dict-count dict-count-id)
-(define/dict-proc dict-any dict-any-id)
-(define/dict-proc dict-every dict-every-id)
-(define/dict-proc dict-keys dict-keys-id)
-(define/dict-proc dict-values dict-values-id)
-(define/dict-proc dict-entries dict-entries-id)
-(define/dict-proc dict-fold dict-fold-id)
-(define/dict-proc dict-map->list dict-map->list-id)
-(define/dict-proc dict->alist dict->alist-id)
-(define/dict-proc dict-comparator dict-comparator-id)
-
-(define dict-for-each
-  (case-lambda
-    ((dto proc dict) (dict-for-each dto proc dict #f #f))
-    ((dto proc dict start) (dict-for-each dto proc dict start #f))
-    ((dto proc dict start end) ((dto-ref-stx dto dict-for-each-id) dto proc dict start end))))
-
-(define dict->generator
-  (case-lambda
-    ((dto dict) (dict->generator dto dict #f #f))
-    ((dto dict start) (dict->generator dto dict start #f))
-    ((dto dict start end) ((dto-ref-stx dto dict->generator-id) dto dict start end))))
-
-(define/dict-proc dict-set-accumulator dict-set-accumulator-id)
-(define/dict-proc dict-adjoin-accumulator dict-adjoin-accumulator-id)
-
-(define (dto-ref dto procindex)
-  (dto-ref-stx dto procindex))
-
-(define (make-modified-dto dto . lst)
-  (define vec (vector-copy (procvec dto)))
-  (do ((lst lst (cddr lst)))
-      ((null? lst))
-    (when (null? (cdr lst))
-      (error "Uneven amount of arguments" lst))
-    (let ((proc-id (car lst))
-          (proc (cadr lst)))
-      (unless (procedure? proc)
-        (error "Not a procedure" proc))
-      (vector-set! vec proc-id proc)))
-  (make-dto-private vec))
-
-(define (make-dto . lst)
-  (apply make-modified-dto default-dto lst))
-
-(define-syntax dto-helper
-  (syntax-rules ()
-    ((_ (arg ...) (index proc) rest ...)
-     (dto-helper (arg ... index proc) rest ...))
-    ((_ (arg ...))
-     (make-dto arg ...))))
-
-(define-syntax dto
-  (syntax-rules ()
-    ((_ (index proc) ...)
-     (dto-helper () (index proc) ...))))
-
-(define (dictionary-error message . irritants)
-  (make-dictionary-error message irritants))