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40 lines
1.5 KiB
Scheme
40 lines
1.5 KiB
Scheme
;;; Guile Lua --- common lua functionality
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;;; Copyright (C) 2010 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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;;; Code:
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(define-module (language lua common)
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#:use-module (ice-9 format)
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#:export (syntax-error or-eqv?))
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(define (syntax-error src string . args)
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"Throw an error tagged with 'syntax-error, and print detailed source
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code information when available. STRING and ARGS are given to FORMAT."
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(throw 'syntax-error #f (apply format #f string args)
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src #f #f '()))
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;; I was using CASE, but this is more succinct
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;; (or-eqv? 1 #f 1) => (or (eqv? 1 #f) (eqv? 1 1))
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(define-syntax or-eqv?
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(syntax-rules ()
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((_ test '(value ...))
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(or (eqv? test 'value) ...))
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((_ test value ...)
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(or (eqv? test value) ...))))
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