41 lines
1.3 KiB
Scheme
41 lines
1.3 KiB
Scheme
;;; Gash -- Guile As SHell
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;;; Copyright © 2017, 2018 Timothy Sample <samplet@ngyro.com>
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;;;
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;;; This file is part of Gash.
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;;;
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;;; Gash is free software: you can redistribute it and/or modify
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;;; it under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation, either version 3 of the License, or
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;;; (at your option) any later version.
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;;;
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;;; Gash 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
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with Gash. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gash repl)
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#:use-module (gash environment)
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#:use-module (gash eval)
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#:use-module (gash parser)
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#:use-module (ice-9 match)
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#:use-module (ice-9 rdelim)
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#:export (run-repl))
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;;; Commentary:
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;;;
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;;; The read-eval-print loop (REPL) of the shell.
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;;;
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;;; Code:
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(define* (run-repl #:optional (port (current-input-port)) parse?)
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(let loop ((exp (read-sh port)))
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(match exp
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((? eof-object?) (sh:exit))
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(_ (if parse? (format #t "~a\n" exp)
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(eval-sh exp))
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(reap-child-processes!)
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(loop (read-sh port))))))
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