You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
30 lines
868 B
Racket
30 lines
868 B
Racket
#lang br/quicklang
|
|
|
|
(define (read-syntax src-path in-port)
|
|
(define stack-args (port->list read in-port))
|
|
(strip-context (with-pattern ([(STACK-ARG ...) stack-args])
|
|
#'(module stacker-mod br/demo/stacker
|
|
(push STACK-ARG) ...))))
|
|
(provide read-syntax)
|
|
|
|
(define-macro (stacker-module-begin PUSH-STACK-ARG ...)
|
|
#'(#%module-begin
|
|
PUSH-STACK-ARG ...
|
|
(display (first stack))))
|
|
(provide (rename-out [stacker-module-begin #%module-begin]))
|
|
|
|
(define stack empty)
|
|
|
|
(define (push arg)
|
|
(cond
|
|
[(number? arg) (set! stack (cons arg stack))]
|
|
[else
|
|
(define result (arg (first stack) (second stack)))
|
|
(set! stack (cons result (drop stack 2)))]))
|
|
(provide push)
|
|
|
|
(provide + *)
|
|
|
|
#;(module+ test
|
|
(require rackunit)
|
|
(check-equal? (with-output-to-string (λ () (dynamic-require "stacker-test.rkt" #f))) "36")) |