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;; geiser-chez.el -- Chez Scheme's implementation of the geiser protocols
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the Modified BSD License. You should
;; have received a copy of the license along with this program. If
;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
(require 'geiser-connection)
(require 'geiser-syntax)
(require 'geiser-custom)
(require 'geiser-base)
(require 'geiser-eval)
(require 'geiser-edit)
(require 'geiser-log)
(require 'geiser)
(require 'compile)
(require 'info-look)
(eval-when-compile (require 'cl))
;;; Customization:
(defgroup geiser-chez nil
"Customization for Geiser's Chez Scheme flavour."
:group 'geiser)
(geiser-custom--defcustom geiser-chez-binary
"scheme"
"Name to use to call the Chez Scheme executable when starting a REPL."
:type '(choice string (repeat string))
:group 'geiser-chez)
;;; REPL support:
(defun geiser-chez--binary ()
(if (listp geiser-chez-binary)
(car geiser-chez-binary)
geiser-chez-binary))
(defun geiser-chez--parameters ()
"Return a list with all parameters needed to start Chez Scheme.
This function uses `geiser-chez-init-file' if it exists."
`(,(expand-file-name "chez/geiser/geiser.ss" geiser-scheme-dir))
)
(defconst geiser-chez--prompt-regexp "> ")
;;; Evaluation support:
(defun geiser-chez--geiser-procedure (proc &rest args)
(case proc
((eval compile)
(let ((form (mapconcat 'identity (cdr args) " "))
(module (cond ((string-equal "'()" (car args))
"'()")
((and (car args))
(concat "'" (car args)))
(t
"#f"))))
(format "(geiser:eval %s '%s)" module form)))
((load-file compile-file)
(format "(geiser:load-file %s)" (car args)))
((no-values)
"(geiser:no-values)")
(t
(let ((form (mapconcat 'identity args " ")))
(format "(geiser:%s %s)" proc form)))))
(defun geiser-chez--get-module (&optional module)
(cond ((null module)
:f)
((listp module) module)
((stringp module)
(condition-case nil
(car (geiser-syntax--read-from-string module))
(error :f)))
(t :f)))
(defun geiser-chez--symbol-begin (module)
(if module
(max (save-excursion (beginning-of-line) (point))
(save-excursion (skip-syntax-backward "^(>") (1- (point))))
(save-excursion (skip-syntax-backward "^'-()>") (point))))
(defun geiser-chez--import-command (module)
(format "(import %s)" module))
(defun geiser-chez--exit-command () "(exit 0)")
;;
;; ;;; REPL startup
(defconst geiser-chez-minimum-version "9.4")
(defun geiser-chez--version (binary)
(shell-command-to-string
(format "%s --version"
(shell-quote-argument binary))))
(defun geiser-chez--startup (remote)
(let ((geiser-log-verbose-p t))
(compilation-setup t)
(geiser-eval--send/wait "(begin (import (geiser)) (write `((result ) (output . \"\"))) (newline))")))
;;; Implementation definition:
(define-geiser-implementation chez
(binary geiser-chez--binary)
(arglist geiser-chez--parameters)
(version-command geiser-chez--version)
(minimum-version geiser-chez-minimum-version)
(repl-startup geiser-chez--startup)
(prompt-regexp geiser-chez--prompt-regexp)
(debugger-prompt-regexp nil) ;; geiser-chez--debugger-prompt-regexp
;; (enter-debugger geiser-chez--enter-debugger)
(marshall-procedure geiser-chez--geiser-procedure)
(find-module geiser-chez--get-module)
;; (enter-command geiser-chez--enter-command)
(exit-command geiser-chez--exit-command)
(import-command geiser-chez--import-command)
(find-symbol-begin geiser-chez--symbol-begin)
;; (display-error geiser-chez--display-error)
;; (external-help geiser-chez--manual-look-up)
;; (check-buffer geiser-chez--guess)
;; (keywords geiser-chez--keywords)
;; (case-sensitive geiser-chez-case-sensitive-p)
)
(geiser-impl--add-to-alist 'regexp "\\.ss$" 'chez t)
(geiser-impl--add-to-alist 'regexp "\\.def$" 'chez t)
(provide 'geiser-chez)
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