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mal/guile/step1_read_print.scm
Joel Martin dd7a4f55f3 Test uncaught throw, catchless try* . Fix 46 impls.
Fixes made to: ada, c, chuck, clojure, coffee, common-lisp, cpp,
crystal, d, dart, elm, erlang, es6, factor, fsharp, gnu-smalltalk,
groovy, guile, haxe, hy, js, livescript, matlab, miniMAL, nasm, nim,
objc, objpascal, ocaml, perl, perl6, php, plsql, ps, python, r,
rpython, ruby, scheme, swift3, tcl, ts, vb, vimscript, wasm, yorick.

Catchless try* test is an optional test. Not all implementations
support catchless try* but a number were fixed so they at least don't
crash on catchless try*.
2018-12-12 14:18:26 -06:00

43 lines
1.3 KiB
Scheme

;; Copyright (C) 2015
;; "Mu Lei" known as "NalaGinrut" <NalaGinrut@gmail.com>
;; This file is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This file 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 General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
(import (readline) (reader) (printer))
(define (READ str)
(read_str str))
(define (EVAL ast env) ast)
(define (PRINT exp)
(and (not (eof-object? exp))
(format #t "~a~%" (pr_str exp #t))))
(define (LOOP continue?)
(and continue? (REPL)))
(define (REPL)
(LOOP
(let ((line (_readline "user> ")))
(cond
((eof-object? line) #f)
((string=? line "") #t)
(else
(catch 'mal-error
(lambda () (PRINT (EVAL (READ line) '())))
(lambda (k . e)
(format #t "Error: ~a~%" (pr_str (car e) #t)))))))))
(REPL)