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;;;
;;; Copyright 2007 Free Software Foundation, Inc.
;;;
;;; This file is part of GNU Radio
;;;
;;; GNU Radio is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3, or (at your option)
;;; any later version.
;;;
;;; GNU Radio 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License along
;;; with this program; if not, write to the Free Software Foundation, Inc.,
;;; 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
;;;
;;; An implementation of pmt_serialize in scheme.
;;; Currently handles only symbols and pairs. They're all we need for now.
(define-module (gnuradio pmt-serialize)
:export (pmt-serialize))
(load-from-path "gnuradio/pmt-serial-tags")
(define (pmt-serialize obj put-byte)
(define (put-u16 x)
(put-byte (logand (ash x -8) #xff))
(put-byte (logand x #xff)))
(cond ((null? obj)
(put-byte pst-null))
((symbol? obj)
(let* ((sym-as-bytes (map char->integer (string->list (symbol->string obj))))
(len (length sym-as-bytes)))
(put-byte pst-symbol)
(put-u16 len)
(for-each put-byte sym-as-bytes)))
((pair? obj)
(put-byte pst-pair)
(pmt-serialize (car obj) put-byte)
(pmt-serialize (cdr obj) put-byte))
(else
(throw 'not-implemented "pmt-serialize" obj))))
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