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;; geiser-plt.el -- geiser support for PLT scheme
;; Copyright (C) 2009 Jose Antonio Ortega Ruiz
;; 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>.
;; Start date: Sat Apr 25, 2009 21:13
(require 'geiser-edit)
(require 'geiser-doc)
(require 'geiser-eval)
(require 'geiser-syntax)
(require 'geiser-custom)
(require 'geiser-base)
;;; Customization:
(defgroup geiser-plt nil
"Customization for Geiser's PLT flavour."
:group 'geiser)
(defcustom geiser-plt-binary
(cond ((eq system-type 'windows-nt) "MzScheme.exe")
((eq system-type 'darwin) "mzscheme")
(t "mzscheme"))
"Name to use to call the mzscheme executable when starting a REPL."
:type '(choice string (repeat string))
:group 'geiser-plt)
(defcustom geiser-plt-collects nil
"A list of paths to be added to mzscheme's collection directories."
:type '(repeat file)
:group 'geiser-plt)
(defcustom geiser-plt-init-file "~/.plt-geiser"
"Initialization file with user code for the mzscheme REPL."
:type 'string
:group 'geiser-plt)
;;; REPL support:
(defun geiser-plt-binary ()
(if (listp geiser-plt-binary) (car geiser-plt-binary) geiser-plt-binary))
(defun geiser-plt-parameters ()
"Return a list with all parameters needed to start mzscheme.
This function uses `geiser-plt-init-file' if it exists."
(let ((init-file (and (stringp geiser-plt-init-file)
(expand-file-name geiser-plt-init-file))))
`("-i" "-q"
"-S" ,(expand-file-name "plt/" geiser-scheme-dir)
,@(apply 'append (mapcar (lambda (p) (list "-S" p)) geiser-plt-collects))
,@(and (listp geiser-plt-binary) (cdr geiser-plt-binary))
,@(and init-file (file-readable-p init-file) (list "-f" init-file))
"-f" ,(expand-file-name "plt/geiser.ss" geiser-scheme-dir))))
(defconst geiser-plt-prompt-regexp "^mzscheme@[^ ]*?> ")
(defun switch-to-plt (&optional ask)
(interactive "P")
(switch-to-geiser ask 'plt))
(defun run-plt ()
"Run Geiser using mzscheme."
(interactive)
(run-geiser 'plt))
;;; Evaluation support:
(defun geiser-plt-geiser-procedure (proc)
(let ((proc (intern (format "geiser:%s" proc))))
`(dynamic-require ''geiser ',proc)))
(defconst geiser-plt--module-re
"^(module +\\([^ ]+\\)")
(defun geiser-plt--explicit-module ()
(save-excursion
(goto-char (point-min))
(and (re-search-forward geiser-plt--module-re nil t)
(ignore-errors
(car (read-from-string (match-string-no-properties 1)))))))
(defsubst geiser-plt--implicit-module ()
(save-excursion
(goto-char (point-min))
(if (re-search-forward "^#lang " nil t)
(buffer-file-name)
:f)))
(defun geiser-plt-get-module (&optional module)
(cond ((and (null module) (buffer-file-name))) ;; (geiser-plt--explicit-module)
((null module) (geiser-plt--implicit-module))
((symbolp module) module)
((and (stringp module) (file-name-absolute-p module)) module)
((stringp module) (intern module))
(t nil)))
(defun geiser-plt-symbol-begin (module)
(save-excursion (skip-syntax-backward "^-()>") (point)))
;;; External help
(defun geiser-plt-external-help (symbol module)
(message "Requesting help for '%s'..." symbol)
(geiser-eval--send/wait
`(:eval (get-help ',symbol (:module ,module)) geiser/autodoc))
(minibuffer-message "%s done" (current-message))
t)
;;; Error display
(defconst geiser-plt--file-rxs '("^\\([^:\n\"]+\\):\\([0-9]+\\):\\([0-9]+\\)"
"path:\"?\\([^>\"\n]+\\)\"?>"
"module: \"\\([^>\"\n]+\\)\""))
(defun geiser-plt--find-files (rx)
(save-excursion
(while (re-search-forward rx nil t)
(geiser-edit--make-link (match-beginning 1)
(match-end 1)
(match-string 1)
(match-string 2)
(match-string 3)))))
(defun geiser-plt-display-error (module key msg)
(when key
(insert "Error: ")
(geiser-doc--insert-button key nil 'plt)
(newline 2))
(when msg
(let ((p (point)))
(insert msg)
(let ((end (point)))
(goto-char p)
(mapc 'geiser-plt--find-files geiser-plt--file-rxs)
(goto-char end)
(fill-region p end)
(newline))))
t)
;;; Trying to ascertain whether a buffer is mzscheme scheme:
(defun geiser-plt-guess ()
(or (save-excursion
(goto-char (point-min))
(re-search-forward "#lang " nil t))
(geiser-plt--explicit-module)
(string-equal (file-name-extension (or (buffer-file-name) "")) "ss")))
(provide 'geiser-plt)
;;; geiser-plt.el ends here
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