8c9ef2c3a2
* guix/monad-repl.scm (store-monad-language): Add 'store' parameter and use it. Remove call to 'open-connection'. (enter-store-monad): Use 'with-store' and pass the store to 'store-monad-language.
93 lines
3.5 KiB
Scheme
93 lines
3.5 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
|
|
;;;
|
|
;;; This file is part of GNU Guix.
|
|
;;;
|
|
;;; GNU Guix 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.
|
|
;;;
|
|
;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
(define-module (guix monad-repl)
|
|
#:use-module (guix store)
|
|
#:use-module (guix monads)
|
|
#:use-module (guix utils)
|
|
#:use-module (guix packages)
|
|
#:use-module (ice-9 pretty-print)
|
|
#:use-module (system repl repl)
|
|
#:use-module (system repl common)
|
|
#:use-module (system repl command)
|
|
#:use-module (system base language)
|
|
#:use-module (system base compile)
|
|
#:use-module (srfi srfi-26)
|
|
#:export (run-in-store
|
|
enter-store-monad))
|
|
|
|
;;; Comment:
|
|
;;;
|
|
;;; This modules provides a couple of REPL meta-commands that make it easier
|
|
;;; to work with monadic procedures in the store monad.
|
|
;;;
|
|
;;; Code:
|
|
|
|
(define* (monad-language monad run #:optional (name 'monad))
|
|
"Return a language with a special evaluator that causes monadic values
|
|
to be \"run\" in MONAD using procedure RUN."
|
|
(let ((scheme (lookup-language 'scheme)))
|
|
(define (evaluate-monadic-expression exp env)
|
|
(let ((mvalue (compile exp #:to 'value #:env env)))
|
|
(run mvalue)))
|
|
|
|
(make-language #:name name
|
|
#:title "Monad"
|
|
#:reader (language-reader scheme)
|
|
#:compilers (language-compilers scheme)
|
|
#:decompilers (language-decompilers scheme)
|
|
#:evaluator evaluate-monadic-expression
|
|
#:printer (language-printer scheme)
|
|
#:make-default-environment
|
|
(language-make-default-environment scheme))))
|
|
|
|
(define* (default-guile-derivation store #:optional (system (%current-system)))
|
|
"Return the derivation of the default "
|
|
(package-derivation store (default-guile) system))
|
|
|
|
(define (store-monad-language store)
|
|
"Return a compiler language for the store monad using STORE."
|
|
(let ((guile (or (%guile-for-build)
|
|
(default-guile-derivation store))))
|
|
(monad-language %store-monad
|
|
(cut run-with-store store <>
|
|
#:guile-for-build guile)
|
|
'store-monad)))
|
|
|
|
(define-meta-command ((run-in-store guix) repl (form))
|
|
"run-in-store EXP
|
|
Run EXP through the store monad."
|
|
(with-store store
|
|
(let* ((guile (or (%guile-for-build)
|
|
(default-guile-derivation store)))
|
|
(value (run-with-store store (repl-eval repl form)
|
|
#:guile-for-build guile)))
|
|
(run-hook before-print-hook value)
|
|
(pretty-print value))))
|
|
|
|
(define-meta-command ((enter-store-monad guix) repl)
|
|
"enter-store-monad
|
|
Enter a REPL for values in the store monad."
|
|
(with-store store
|
|
(let ((new (make-repl (store-monad-language store))))
|
|
;; Force interpretation so that our specially-crafted language evaluator
|
|
;; is actually used.
|
|
(repl-option-set! new 'interp #t)
|
|
(run-repl new))))
|
|
|
|
;;; monad-repl.scm ends here
|