| ;;; 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) | |