(define-module (language python spec)
  #:use-module (parser stis-parser lang python3-parser)
  #:use-module (language python compile)
  #:use-module (language python completer)
  #:use-module (rnrs io ports)
  #:use-module (ice-9 pretty-print)
  #:use-module (ice-9 readline)
  #:use-module (system base compile)
  #:use-module (system base language)
  #:use-module (language scheme compile-tree-il)
  #:use-module (language scheme decompile-tree-il)
  #:use-module (ice-9 rdelim)
  #:export (python))

;;;
;;; Language definition
;;;

(define (pr . x)
  (define port (open-file "/home/stis/src/python-on-guile/log.txt" "a"))
  (with-output-to-port port
    (lambda ()
      (pretty-print x) (car (reverse  x))))
  (close port)
  (car (reverse x)))

(define (c x) (pr (comp (pr (p (pr x))))))
(define (cc port x)
  (if (equal? x "") (read port) (c x)))

(define (e x) (eval (c x) (current-module)))

(set! (@@ (ice-9 readline) *readline-completion-function*) (complete-fkn e))

(define-language python
  #:title	"python"
  #:reader      (lambda (port env)
                  (if (not (fluid-ref (@@ (system base compile) %in-compile)))
                      (cc port (read-line port))
                      (cc port (read-string port))))

  #:compilers   `((tree-il . ,compile-tree-il))
  #:decompilers `((tree-il . ,decompile-tree-il))
  #:evaluator	(lambda (x module) (primitive-eval x))
  #:printer	write
  #:make-default-environment
  (lambda ()
    ;; Ideally we'd duplicate the whole module hierarchy so that `set!',
    ;; `fluid-set!', etc. don't have any effect in the current environment.
    (let ((m (make-fresh-user-module)))                    
      ;; Provide a separate `current-reader' fluid so that
      ;; compile-time changes to `current-reader' are
      ;; limited to the current compilation unit.
      (module-define! m 'current-reader (make-fluid))
      
      ;; Default to `simple-format', as is the case until
      ;; (ice-9 format) is loaded.  This allows
      ;; compile-time warnings to be emitted when using
      ;; unsupported options.
      (module-set! m 'format simple-format)
      
      m)))