File size: 1,875 Bytes
3dcad1f |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 |
;;; Continuation-passing style (CPS) intermediate language (IL)
;; Copyright (C) 2015 Free Software Foundation, Inc.
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;;; Code:
(define-module (language cps spec)
#:use-module (ice-9 match)
#:use-module (system base language)
#:use-module (language cps)
#:use-module (language cps intmap)
#:use-module (language cps optimize)
#:use-module (language cps compile-bytecode)
#:export (cps))
(define (read-cps port env)
(let lp ((out empty-intmap))
(match (read port)
((k exp) (lp (intmap-add! out k (parse-cps exp))))
((? eof-object?)
(if (eq? out empty-intmap)
the-eof-object
(persistent-intmap out))))))
(define* (write-cps exp #:optional (port (current-output-port)))
(intmap-fold (lambda (k cps port)
(write (list k (unparse-cps cps)) port)
(newline port)
port)
exp port))
(define-language cps
#:title "CPS Intermediate Language"
#:reader read-cps
#:printer write-cps
#:compilers `((bytecode . ,compile-bytecode))
#:for-humans? #f
#:lowerer make-cps-lowerer)
|