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;; geiser-mit.el -- MIT/GNU 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-mit nil
"Customization for Geiser's MIT/GNU Scheme flavour."
:group 'geiser)
(geiser-custom--defcustom geiser-mit-binary
"mit-scheme"
"Name to use to call the MIT/GNU Scheme executable when starting a REPL."
:type '(choice string (repeat string))
:group 'geiser-mit)
(geiser-custom--defcustom geiser-mit-source-directory
""
"The path to the MIT/GNU Scheme sources' src/ directory."
:type 'filename
:group 'geiser-mit)
;;; REPL support:
(defun geiser-mit--binary ()
(if (listp geiser-mit-binary)
(car geiser-mit-binary)
geiser-mit-binary))
(defun geiser-mit--parameters ()
"Return a list with all parameters needed to start MIT/GNU Scheme.
This function uses `geiser-mit-init-file' if it exists."
`("--load" ,(expand-file-name "mit/geiser/load.scm" geiser-scheme-dir))
)
(defconst geiser-mit--prompt-regexp "[0-9]+ ([^)]+) => ") ;; *not* ]=>, that confuses syntax-ppss
(defconst geiser-mit--debugger-prompt-regexp "[0-9]+ error> ")
;;; Evaluation support:
(defun geiser-mit--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)))))
(defconst geiser-mit--module-re
".*;; package: +\\(([^)]*)\\)")
(defun geiser-mit--get-module (&optional module)
(cond ((null module)
(save-excursion
(geiser-syntax--pop-to-top)
(if (or (re-search-backward geiser-mit--module-re nil t)
(re-search-forward geiser-mit--module-re nil t))
(geiser-mit--get-module (match-string-no-properties 1))
:f)))
((listp module) module)
((stringp module)
(condition-case nil
(car (geiser-syntax--read-from-string module))
(error :f)))
(t :f)))
(defun geiser-mit--module-cmd (module fmt &optional def)
(when module
(let* ((module (geiser-mit--get-module module))
(module (cond ((or (null module) (eq module :f)) def)
(t (format "%s" module)))))
(and module (format fmt module)))))
(defun geiser-mit--enter-command (module)
(geiser-mit--module-cmd module "(geiser:ge '%s)" "()"))
(defun geiser-mit--exit-command () "(%exit 0)")
(defun geiser-mit--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))))
;;
;; ;;; REPL startup
(defconst geiser-mit-minimum-version "9.2.1")
(defun geiser-mit--version (binary)
(shell-command-to-string
(format "%s --quiet --no-init-file --eval %s"
(shell-quote-argument binary)
"'(begin (display (get-subsystem-version-string \"Release\")) (%exit 0))'")))
(defconst geiser-mit--path-rx "^In \\([^:\n ]+\\):\n")
(defun geiser-mit--startup (remote)
(let ((geiser-log-verbose-p t))
(compilation-setup t)
(when (and (stringp geiser-mit-source-directory)
(not (string-empty-p geiser-mit-source-directory)))
(geiser-eval--send/wait (format "(geiser:set-mit-scheme-source-directory %S)" geiser-mit-source-directory)))))
;;; Implementation definition:
(define-geiser-implementation mit
(binary geiser-mit--binary)
(arglist geiser-mit--parameters)
(version-command geiser-mit--version)
(minimum-version geiser-mit-minimum-version)
(repl-startup geiser-mit--startup)
(prompt-regexp geiser-mit--prompt-regexp)
(debugger-prompt-regexp geiser-mit--debugger-prompt-regexp)
;; (enter-debugger geiser-mit--enter-debugger)
(marshall-procedure geiser-mit--geiser-procedure)
(find-module geiser-mit--get-module)
(enter-command geiser-mit--enter-command)
(exit-command geiser-mit--exit-command)
;; (import-command geiser-mit--import-command)
(find-symbol-begin geiser-mit--symbol-begin)
;; (display-error geiser-mit--display-error)
;; (external-help geiser-mit--manual-look-up)
;; (check-buffer geiser-mit--guess)
;; (keywords geiser-mit--keywords)
;; (case-sensitive geiser-mit-case-sensitive-p)
)
(geiser-impl--add-to-alist 'regexp "\\.scm$" 'mit t)
(geiser-impl--add-to-alist 'regexp "\\.pkg$" 'mit t)
(provide 'geiser-mit)
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