master
Matthew Butterick 5 years ago
parent 023d056bc8
commit 64e54f2f63

@ -1,23 +1,25 @@
#lang br
(require racket/file rackunit)
#lang br/quicklang
(require (for-syntax racket/string racket/sequence) racket/file rackunit)
(define ore? number?)
(define (make-reactor reax-output proc-or-ore [t (current-thread)])
(let ([r (thread (λ ()
(let* ([ch (make-channel)]
[r (thread (λ ()
(define reax 0)
(define reax-formula (match proc-or-ore
[(? ore? ore) ore]
[proc proc]))
(let loop ([supply 0])
(match (thread-receive)
(match (channel-get ch)
['ore
(thread-send t (match reax-formula
(channel-put ch (match reax-formula
[(? ore? ore) (* ore reax)]
[_ 0]))
(loop supply)]
['reset
(set! reax 0)
(channel-put ch always-evt)
(loop 0)]
[amt (let inner ([supply supply])
(cond
@ -26,36 +28,47 @@
(unless (ore? reax-formula)
(reax-formula))
(inner (+ supply reax-output))]
[else (loop (- supply amt))]))]))))])
[else
(channel-put ch always-evt)
(loop (- supply amt))]))]))))])
(λ (arg)
(thread-send r arg)
(when (eq? arg 'ore)
(thread-receive)))))
(channel-put ch arg)
(channel-get ch))))
(define-syntax (handle stx)
(syntax-case stx (ORE)
[(_) #'(begin)]
[(_ X ORE => Q ID) #'(define ID (make-reactor Q X))]
[(_ ARG ... => Q ID)
(with-syntax ([(PR ...)
(for/list ([duo (in-slice 2 (reverse (syntax->datum #'(ARG ...))))])
(list (datum->syntax stx (car duo))
(cadr duo)))]
[ID (datum->syntax stx (syntax->datum #'ID))])
#'(define ID (make-reactor Q (λ () (sync PR ...)))))]))
(define A (make-reactor 10 10))
#|(A 7)
(A 7)
(A 7)
(A 7)
(check-eq? (A 'ore) 30)
(A 'reset)
|#
(define-syntax (total stx)
(syntax-case stx ()
[(_ ID ...)
(with-syntax ([(ID ...) (for/list ([idstx (in-list (syntax->list #'(ID ...)))])
(datum->syntax stx (syntax->datum idstx)))])
#'(+ (ID 'ore) ...))]))
(provide handle quote total void)
(define B (make-reactor 1 1))
#|(B 7)
(B 7)
(B 7)
(B 7)
(check-eq? (B 'ore) 28)
(B 'reset)
|#
(module+ reader
(provide read-syntax)
(define (read-syntax name ip)
(define lns (for/list ([ln (in-list (port->lines ip))]
#:when (positive? (string-length ln)))
(string-replace ln "," "")))
(define src-datums (format-datums '(handle ~a) lns))
(datum->syntax #f `(module _ "14.rkt"
,@src-datums
(void (FUEL 1))
(total ,@(map last src-datums))))))
(define C (make-reactor 1 (λ () (A 7) (B 1))))
(define D (make-reactor 1 (λ () (A 7) (C 1))))
(define E (make-reactor 1 (λ () (A 7) (D 1))))
(define FUEL (make-reactor 1 (λ () (A 7) (E 1))))
(FUEL 1)
(A 'ore)
(A 'ore)
(A 'ore)
(define-macro (mb ARG ...)
(with-syntax ([FUEL (datum->syntax caller-stx 'FUEL)])
#'(#%module-begin
ARG ...)))
(provide (rename-out [mb #%module-begin]))

@ -1,3 +1,4 @@
#lang reader (submod "14.rkt" reader)
1 FVBHS, 29 HWPND => 4 CPXDX
5 TNWDG, 69 VZMS, 1 GXSD, 48 NCLZ, 3 RSRZ, 15 HWPND, 25 SGPK, 2 SVCQ => 1 FUEL
1 PQRLB, 1 TWPMQ => 4 QBXC

@ -0,0 +1,7 @@
#lang reader (submod "14.rkt" reader)
10 ORE => 10 A
1 ORE => 1 B
7 A, 1 B => 1 C
7 A, 1 C => 1 D
7 A, 1 D => 1 E
7 A, 1 E => 1 FUEL