|
|
|
@ -2,44 +2,24 @@
|
|
|
|
|
(require (for-syntax racket/base))
|
|
|
|
|
(require racket/contract)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(provide define/provide define/provide/contract)
|
|
|
|
|
|
|
|
|
|
;; todo: these won't handle nested forms like (define ((foo x) y))
|
|
|
|
|
|
|
|
|
|
(define-syntax (define/provide stx)
|
|
|
|
|
(syntax-case stx ()
|
|
|
|
|
;; order of cases matters, of course
|
|
|
|
|
;; match more complicated shape first,
|
|
|
|
|
;; otherwise second matcher gives false positives
|
|
|
|
|
[(_ (name arg ... . rest-arg) body ...)
|
|
|
|
|
#'(begin
|
|
|
|
|
(provide name)
|
|
|
|
|
(define (name arg ... . rest-arg) body ...))]
|
|
|
|
|
[(_ (name arg ...) body ...)
|
|
|
|
|
#'(begin
|
|
|
|
|
(provide name)
|
|
|
|
|
(define (name arg ...) body ...))]
|
|
|
|
|
[(_ (proc arg ... . rest-arg) body ...)
|
|
|
|
|
#'(define/provide proc
|
|
|
|
|
(λ(arg ... . rest-arg) body ...))]
|
|
|
|
|
[(_ name body ...)
|
|
|
|
|
#'(begin
|
|
|
|
|
(provide name)
|
|
|
|
|
(define name body ...))]))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(define-syntax (define/provide/contract stx)
|
|
|
|
|
(syntax-case stx ()
|
|
|
|
|
[(_ (name arg ... . rest-arg) contract body ...)
|
|
|
|
|
#'(begin
|
|
|
|
|
(provide (contract-out [name contract]))
|
|
|
|
|
(define (name arg ... . rest-arg) body ...))]
|
|
|
|
|
[(_ (name arg ...) contract body ...)
|
|
|
|
|
#'(begin
|
|
|
|
|
(provide (contract-out [name contract]))
|
|
|
|
|
(define (name arg ...) body ...))]
|
|
|
|
|
[(_ (proc arg ... . rest-arg) contract body ...)
|
|
|
|
|
#'(define/provide/contract proc contract
|
|
|
|
|
(λ(arg ... . rest-arg) body ...))]
|
|
|
|
|
[(_ name contract body ...)
|
|
|
|
|
#'(begin
|
|
|
|
|
(provide (contract-out [name contract]))
|
|
|
|
|
(define name body ...))]))
|
|
|
|
|
|
|
|
|
|
(define/provide (foo x y . z)
|
|
|
|
|
(+ x y z))
|