(load "shared/util")
;(load "shared/ch5-regsim")
;(load "shared/ch5-compiler")
;(load "shared/ch5-eceval-support")
;
;(display "\nex-5.50 - compile-metacircular-evaluator\n")
;
;(define mceval-code
;  (let ((port (open-input-file "shared/ch4-mceval.scm")))
;    (read port)))
;
;(define mceval-compiled
;  (append
;    (list '(assign env (op get-global-environment)))
;    (statements (compile mceval-code 'val 'next))))
;
;;; write assembly to file for debug purposes
;; (let ((port (open-output-file "f-mceval-compiled.scm")))
;;   (define (write-list-to-port xs port)
;;     (if (null? xs) '()
;;       (begin (display (car xs) port) (display "\n" port)
;;              (write-list-to-port (cdr xs) port))))
;;   (write-list-to-port mceval-compiled port)
;;   (close-output-port port))
;
;(define eceval-operations (list
;   (list 'list list)
;   (list 'cons cons)
;
;   (list 'true? true?)
;   (list 'false? false?)    ;for compiled code
;   (list 'make-procedure make-procedure)
;   (list 'compound-procedure? compound-procedure?)
;   (list 'procedure-parameters procedure-parameters)
;   (list 'procedure-body procedure-body)
;   (list 'procedure-environment procedure-environment)
;   (list 'extend-environment extend-environment)
;   (list 'lookup-variable-value lookup-variable-value)
;   (list 'set-variable-value! set-variable-value!)
;   (list 'define-variable! define-variable!)
;   (list 'primitive-procedure? primitive-procedure?)
;   (list 'apply-primitive-procedure apply-primitive-procedure)
;   (list 'prompt-for-input prompt-for-input)
;   (list 'announce-output announce-output)
;   (list 'user-print user-print)
;   (list 'empty-arglist empty-arglist)
;   (list 'adjoin-arg adjoin-arg)
;   (list 'last-operand? last-operand?)
;   (list 'no-more-exps? no-more-exps?)  ;for non-tail-recursive machine
;   (list 'get-global-environment get-global-environment)
;
;   ;;for compiled code (also in eceval-support.scm)
;   (list 'make-compiled-procedure make-compiled-procedure)
;   (list 'compiled-procedure? compiled-procedure?)
;   (list 'compiled-procedure-entry compiled-procedure-entry)
;   (list 'compiled-procedure-env compiled-procedure-env)
;  ))
;
;(define the-global-environment (setup-environment))
;(define mceval-machine
;  (make-machine
;    '(exp env val proc argl continue unev)
;    eceval-operations
;    mceval-compiled))
;
;(start mceval-machine)
;;; (factorial 5) computed by compiled mceval executed by register simulator
;(assert (get-register-contents mceval-machine 'val) 120)

;; Uncomment driver loop within shared/ch4-mceval.scm and load in mit-scheme
;; for REPL:

; λ symposium sicp → λ git master* → mit-scheme
; 1 ]=> (load "ex-5_50-52")
; ;;; M-Eval input:
; (define (f n) (if (= n 1) 1 (* n (f (- n 1)))))
; ;;; M-Eval value:
; ok
; ;;; M-Eval input:
; (f 10)
; ;;; M-Eval value:
; 3628800
; #magic

(display "\nex-5.51 - Scheme Interpreter in Rust\n")

; I have implemented a crude Scheme interpreter in Rust:
; https://git.felixm.de/felixm/schemers

(display "[ok]\n")

(display "\nex-5.52 - Scheme to C Translator\n")

(load "shared/scm2c/translator")

; My goal is to create proof of concept. Not to compile the metacircular
; evaluator.

(define c-preamble '(
  "#include <stdio.h>"
  "#include <stdint.h>"
  "#include <stdlib.h>"
  ""
  "#include \"datum.h\""
  ""
  "int main() {"
  "    datum *val;"
  "    datum *argl[10];"
  "    datum *proc;"
  "    void *cont, *entry, *env;"
  ""
  ))

(define c-epilog '(
  "    printf(\"%u\\n\", val->value);"
  "}"
  ))

(define (compile-to-file file-name code)
  (define (write-list-to-line xs port)
    (cond
      ((null? xs) '())
      ((pair? xs) (display (car xs) port)
                  (write-list-to-line (cdr xs) port))
      (else (display xs port))))
  (define (write-list-to-port xs port)
    (if (null? xs) '()
      (begin (write-list-to-line (car xs) port)
             (display "\n" port)
             (write-list-to-port (cdr xs) port))))
  (let ((port (open-output-file file-name))
        (stmts (statements (compile code 'val 'next))))
     (write-list-to-port c-preamble port)
     (write-list-to-port stmts port)
     (write-list-to-port c-epilog port)
     (display "[cc ") (display file-name)
     (display "]") (newline)
     (close-output-port port)))

(compile-to-file "shared/scm2c/main.c" '(+ 42 3))

; write assembly to file for debug purposes