48 lines
1.6 KiB
Scheme
48 lines
1.6 KiB
Scheme
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;;; Copyright (C) 2010, 2011, 2013, 2024 Free Software Foundation, Inc.
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;;;
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;;; This library is free software; you can redistribute it and/or
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;;; modify it under the terms of the GNU Lesser General Public
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;;; License as published by the Free Software Foundation; either
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;;; version 3 of the License, or (at your option) any later version.
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;;;
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;;; This library 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 GNU
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;;; Lesser General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU Lesser General Public
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;;; License along with this library; if not, write to the Free Software
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;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;; Commentary:
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;;;
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;;; This is a convenience module for porting Goblins to Hoot while Guile support
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;;; is incomplete. It simply re-exports some extant Hoot prompt functionality
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;;; and adds call-with-escape-continuation and call/ec.
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;;;
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;;; Code:
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(define-module (ice-9 control)
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#:export (make-prompt-tag
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default-prompt-tag
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call-with-prompt
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abort-to-prompt
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%
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default-prompt-handler
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call-with-escape-continuation
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call/ec))
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(define (call-with-escape-continuation proc)
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"Call PROC with an escape continuation."
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(let ((tag (list 'call/ec)))
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(call-with-prompt tag
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(lambda ()
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(proc (lambda args
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(apply abort-to-prompt tag args))))
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(lambda (_ . args)
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(apply values args)))))
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(define call/ec call-with-escape-continuation)
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