mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-02 13:00:26 +02:00
a30c18c22a
What is missing:
+ Functions: module, getfenv, setfenv, math.modf, table.sort
+ Parser: needs to be more flexible
+ Compiler: needs more extensive work to properly handle all possible
cases of variable arguments, multiple returns, and loops
+ Language: Variable arguments and unpacking of multiple returns. (For
example we need to be able to handle something as complex as
print(unpack({...})), which is easy with Lua's explicit stack but will
require lots of tree-il gymnastics, or perhaps modifications to better
allow different calling conventions. (For instance -- how would we
support Python or Ruby, where keyword arguments are gathered into a
hashtable and passed as a single argument?)
What is there:
A fair shot at supporting Lua 5.1, not quite a drop-in replacement, but
not far from that goal either.
50 lines
1.8 KiB
Scheme
50 lines
1.8 KiB
Scheme
;;; 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) ...))))
|