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guile/module/language/ghil/spec.scm
Neil Jerram 53befeb700 Change Guile license to LGPLv3+
(Not quite finished, the following will be done tomorrow.
   module/srfi/*.scm
   module/rnrs/*.scm
   module/scripts/*.scm
   testsuite/*.scm
   guile-readline/*
)
2009-06-17 00:22:09 +01:00

62 lines
2.2 KiB
Scheme

;;; Guile High Intermediate Language
;; Copyright (C) 2001 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 ghil spec)
#:use-module (system base language)
#:use-module (language glil)
#:use-module (language ghil)
#:use-module (language ghil compile-glil)
#:export (ghil))
(define (write-ghil exp . port)
(apply write (unparse-ghil exp) port))
(define (parse x)
(call-with-ghil-environment (make-ghil-toplevel-env (current-module)) '()
(lambda (env vars)
(make-ghil-lambda env #f vars #f '() (parse-ghil env x)))))
(define (join exps env)
(if (or-map (lambda (x)
(or (not (ghil-lambda? x))
(ghil-lambda-rest x)
(memq 'argument
(map ghil-var-kind
(ghil-env-variables (ghil-lambda-env x))))))
exps)
(error "GHIL expressions to join must be thunks"))
(let ((env (make-ghil-env env '()
(apply append
(map ghil-env-variables
(map ghil-lambda-env exps))))))
(make-ghil-lambda env #f '() #f '()
(make-ghil-begin env #f
(map ghil-lambda-body exps)))))
(define-language ghil
#:title "Guile High Intermediate Language (GHIL)"
#:version "0.3"
#:reader read
#:printer write-ghil
#:parser parse
#:joiner join
#:compilers `((glil . ,compile-glil))
)