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c8df99730a
* module/ice-9/control.scm (%): Fix to allow tagged and default-tagged prompts. (abort): Re-export.
38 lines
1.2 KiB
Scheme
38 lines
1.2 KiB
Scheme
;;; Beyond call/cc
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;; Copyright (C) 2010 Free Software Foundation, Inc.
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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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;;; Code:
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(define-module (ice-9 control)
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#:re-export (prompt abort)
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#:export (% control))
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;; the same as abort.
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(define (control tag . args)
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(apply abort tag args))
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(define-syntax %
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(syntax-rules ()
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((_ expr handler)
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(prompt (fluid-ref %default-prompt-tag)
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(lambda () expr)
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handler))
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((_ tag expr handler)
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(prompt tag
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(lambda () expr)
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handler))))
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