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(define-module (language python spec)
#:use-module (language python parser)
#:use-module (language python compile)
#:use-module (rnrs io ports)
#:use-module (ice-9 pretty-print)
#: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) (pretty-print x) (car (reverse x)))
(define (c x) (pr (comp (pr (p (pr x))))))
(define (cc port x)
(if (equal? x "") (read port) (c x)))
(define-language python
#:title "python"
#:reader (lambda (port env)
(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)))
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