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1e018f6c67
* module/language/elisp/README: Document changes. * module/language/elisp/compile-tree-il.scm: Bug fixes to fluid-creation. * module/language/elisp/runtime.scm: Some helping definitions for built-ins. * module/language/elisp/runtime/function-slot.scm: Defined artihmetic built-ins.
54 lines
1.4 KiB
Scheme
54 lines
1.4 KiB
Scheme
;;; Guile Emac Lisp
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;; Copyright (C) 2001 Free Software Foundation, Inc.
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; see the file COPYING. If not, write to
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;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(define-module (language elisp runtime)
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#:export (void nil-value t-value elisp-bool)
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#:export-syntax (built-in-func))
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; This module provides runtime support for the Elisp front-end.
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; The reserved value to mean (when eq?) void.
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(define void (list 42))
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; Values for t and nil.
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; FIXME: Use real nil.
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(define nil-value #f)
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(define t-value #t)
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; Convert a scheme boolean to Elisp.
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(define (elisp-bool b)
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(if b
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t-value
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nil-value))
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; Define a predefined function; convenient macro for this task.
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(define-macro (built-in-func name value)
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`(begin
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(define-public ,name (make-fluid))
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(fluid-set! ,name ,value)))
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