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;;; Guile Lua --- common lua functionality
;;; Copyright (C) 2010 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 lua common)
#:use-module (ice-9 format)
#:export (syntax-error or-eqv?))
(define (syntax-error src string . arguments)
"Throw an error tagged with 'lua-syntax, and print detailed source
code information when available. STRING and ARGUMENTS are given to FORMAT."
(throw 'lua-syntax
(string-append
(if src
(format #f "~a@~a.~a"
(cdr (assq 'filename src))
(cdr (assq 'line src))
(if (assq 'column src)
(cdr (assq 'column src))
"[no column available]"))
"[no source code information given]")
": "
(apply format (cons string arguments)))))
;; I was using CASE, but this is more succinct
;; (or-eqv? 1 #f 1) => (or (eqv? 1 #f) (eqv? 1 1))
(define-syntax or-eqv?
(syntax-rules ()
((_ test '(value ...))
(or (eqv? test 'value) ...))
((_ test value ...)
(or (eqv? test value) ...))))
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