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beautiful-racket/beautiful-racket/br/demo/hdl/expander.rkt

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Racket

#lang br
(provide (all-from-out br) (all-defined-out))
(require "expander0.rkt")
#|
Be your own binding procedure.
Part parser should generate inner `define`.
input-pin-spec parser should generate kw procedure.
chip-name parser should generate outer define/provide form.
(chip Not
(x)
(y))
|#
(define-for-syntax (remove-commas stx-expr)
(filter (λ(i)
(not (equal? "," (syntax->datum i)))) (syntax->list stx-expr)))
(define #'(make-kw-procedure
(pin-spec-in "IN" _pinin-or-comma ... ";")
(pin-spec-out "OUT" _pinout-or-comma ... ";")
_part-spec)
(inject-syntax ([#'(_pinin ...) (remove-commas #'(_pinin-or-comma ...))]
[#'(_pinout ...) (remove-commas #'(_pinout-or-comma ...))])
#'(make-keyword-procedure
(λ (kws kw-args . rest)
(define kw-pairs (map cons kws kw-args))
(let ([_pinin (cdr (assq (string->keyword (format "~a" '_pinin)) kw-pairs))] ...)
#;_part-spec
(define _pinout (list _pinin ...)) ...
(list _pinout ...))))))
;; next: make part-spec work
#;(define #'(part-spec "PARTS:" _part ...))
(define #'(chip-program "CHIP" _topid "{" _pin-spec-in _pin-spec-out _part-spec "}")
#`(begin
(provide _topid)
(define _topid
(make-kw-procedure _pin-spec-in _pin-spec-out _part-spec)
)
(require rackunit)
(check-equal? (_topid #:a 1 #:b 2 #:c 3 #:d 4) '((1 2 3 4)(1 2 3 4)(1 2 3 4)))))
#|
PARTS:
Nand(a=a, b=a, out=x);
|#