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Cut over to (lib:import-set/exports->imports)

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Justin Ethier 2016-10-11 00:32:00 -04:00
parent d4486696b2
commit 5b75a48eac
1 changed files with 8 additions and 43 deletions
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51
scheme/cyclone/libraries.sld
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@ -40,7 +40,6 @@
lib:read-imports
lib:import->export-list
lib:import-set/exports->imports
;lib:member:direct-or-car
;lib:resolve-imports
lib:resolve-meta
lib:get-all
@ -244,56 +243,22 @@
(lib (read-all fp))
(exports (lib:exports (car lib))))
(close-input-port fp)
;; TODO: don't even both with below and call this instead:
;;(define (lib:import-set/exports->imports import-set exports)
(cond
;; TODO: how to handle these recursively? IE: import set could be
;; a rename that has a prefix that has a library name
((tagged-list? 'only import)
;; Filter to symbols from "only" that appear in export list
(filter
(lambda (sym)
(member sym exports))
(cddr import)))
((tagged-list? 'except import)
(filter
(lambda (sym)
(not (member sym (cddr import))))
exports))
;; TODO: if prefix or rename, can resolve to original lib identifier.
;; would need another function somewhere to compute the renames though.
;; maybe compute both and return a list of both???
(else
exports))))
;; Determine if given value is a member of the given list, either directly
;; or as the car of a pair in the list
#;(define (lib:member:direct-or-car val lis)
(call/cc
(lambda (return)
(for-each
(lambda (elem)
(if (or (equal? elem val)
(and (pair? elem) (equal? (car elem) val)))
(return #t)))
lis)
(return #f))))
(lib:import-set/exports->imports import exports)))
;; Take an import set and the corresponding list of exports. Process all of the
;; import set directives (only, except, rename, prefix) and return a list of:
;; - identifiers to import
;; - renames: identifiers that will be imported using a different name
;; import set directives (only, except, rename, prefix) and return a list of identifiers to import based on the export list.
;;
;; Any identifiers renamed in the export list will be returned as a pair
;; of the form (renamed-ident . original-ident)
;;
(define (lib:import-set/exports->imports import-set exports)
;; TODO: how to handle if a var is renamed more than once? really just want one mapping from lib-var-name => renamed-var-name
;; TODO: if import-set is not library name, recursively process it, then deal with results here
;; Handle import set that contains another import set
(unless (lib:import-set:library-name? import-set)
(let ((result (lib:import-set/exports->imports
(lib:import-set->import-set import-set)
exports)))
(set! exports result)))
;; Process the current import set
(cond
((tagged-list? 'only import-set)
;; Filter to symbols from "only" that appear in export list