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;; geiser-racket.el -- geiser support for Racket scheme
;; Copyright (C) 2009, 2010 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-racket nil
"Customization for Geiser's Racket flavour."
:group 'geiser)
(geiser-custom--defcustom geiser-racket-binary
(cond ((eq system-type 'windows-nt) "Racket.exe")
((eq system-type 'darwin) "racket")
(t "racket"))
"Name to use to call the racket executable when starting a REPL."
:type '(choice string (repeat string))
:group 'geiser-racket)
(geiser-custom--defcustom geiser-racket-collects nil
"A list of paths to be added to racket's collection directories."
:type '(repeat file)
:group 'geiser-racket)
(geiser-custom--defcustom geiser-racket-init-file "~/.racket-geiser"
"Initialization file with user code for the racket REPL."
:type 'string
:group 'geiser-racket)
;;; REPL support:
(defun geiser-racket--binary ()
(if (listp geiser-racket-binary)
(car geiser-racket-binary)
geiser-racket-binary))
(defun geiser-racket--parameters ()
"Return a list with all parameters needed to start racket.
This function uses `geiser-racket-init-file' if it exists."
(let ((init-file (and (stringp geiser-racket-init-file)
(expand-file-name geiser-racket-init-file))))
`("-i" "-q"
"-S" ,(expand-file-name "racket/" geiser-scheme-dir)
,@(apply 'append (mapcar (lambda (p) (list "-S" p)) geiser-racket-collects))
,@(and (listp geiser-racket-binary) (cdr geiser-racket-binary))
,@(and init-file (file-readable-p init-file) (list "-f" init-file))
"-f" ,(expand-file-name "racket/geiser.rkt" geiser-scheme-dir))))
(defconst geiser-racket--prompt-regexp "^=?\\(mzscheme\\|racket\\)@[^ ]*?> ")
;;; Evaluation support:
(defun geiser-racket--language ()
(save-excursion
(goto-char (point-min))
(if (re-search-forward
"^\\(?:#lang\\|(module +[^ ]+?\\) +\\([^ ]+?\\|([^)]+)\\) *$" nil t)
(car (geiser-syntax--read-from-string (match-string-no-properties 1)))
:f)))
(defun geiser-racket--geiser-procedure (proc)
(if (memq proc '(eval compile))
`((dynamic-require 'geiser 'geiser:eval) ',(geiser-racket--language))
`(dynamic-require 'geiser ',(intern (format "geiser:%s" proc)))))
(defconst geiser-racket--module-re
"^(module +\\([^ ]+\\)")
(defun geiser-racket--explicit-module ()
(save-excursion
(goto-char (point-min))
(and (re-search-forward geiser-racket--module-re nil t)
(ignore-errors
(car (geiser-syntax--read-from-string
(match-string-no-properties 1)))))))
(defsubst geiser-racket--implicit-module ()
(save-excursion
(goto-char (point-min))
(if (re-search-forward "^#lang " nil t)
(buffer-file-name)
:f)))
(defun geiser-racket--get-module (&optional module)
(cond ((and (null module) (buffer-file-name)))
;; (geiser-racket--explicit-module)
((null module) (geiser-racket--implicit-module))
((symbolp module) module)
((and (stringp module) (file-name-absolute-p module)) module)
((stringp module) (intern module))
(t nil)))
(defun geiser-racket--symbol-begin (module)
(save-excursion (skip-syntax-backward "^-()>") (point)))
(defun geiser-racket--enter-command (module)
(when (stringp module)
(cond ((zerop (length module)) "(enter! #f)")
((file-name-absolute-p module) (format "(enter! (file %S))" module))
(t (format "(enter! %s)" module)))))
(defun geiser-racket--import-command (module)
(and (stringp module)
(not (zerop (length module)))
(format "(require %s)" module)))
(defun geiser-racket--exit-command ()
(not (geiser-eval--send/result '(:eval (exit) geiser/emacs))))
(defconst geiser-racket--binding-forms
'(for for/list for/hash for/hasheq for/and for/or
for/lists for/first for/last for/fold
for: for/list: for/hash: for/hasheq: for/and: for/or:
for/lists: for/first: for/last: for/fold:))
(defconst geiser-racket--binding-forms*
'(for* for*/list for*/lists for*/hash for*/hasheq for*/and
for*/or for*/first for*/last for*/fold
for*: for*/list: for*/lists: for*/hash: for*/hasheq: for*/and:
for*/or: for*/first: for*/last: for*/fold:))
;;; External help
(defsubst geiser-racket--get-help (symbol module)
(geiser-eval--send/wait
`(:eval (get-help ',symbol (:module ,module)) geiser/autodoc)))
(defun geiser-racket--external-help (id module)
(message "Requesting help for '%s'..." id)
(let ((out (geiser-eval--retort-output
(geiser-racket--get-help id module))))
(when (and out (string-match " but provided by:\n +\\(.+\\)\n" out))
(geiser-racket--get-help id (match-string 1 out))))
(minibuffer-message "%s done" (current-message))
t)
;;; Error display
(defconst geiser-racket--file-rxs
'(nil
"path:\"?\\([^>\"\n]+\\)\"?>"
"module: \"\\([^>\"\n]+\\)\""))
(defconst geiser-racket--geiser-file-rx
"^/[^:\n\"]*/geiser/[^:\n\"]*:")
(defun geiser-racket--purge-trace ()
(save-excursion
(while (re-search-forward geiser-racket--geiser-file-rx nil t)
(kill-whole-line))))
(defun geiser-racket--display-error (module key msg)
(when key
(insert "Error: ")
(geiser-doc--insert-button key nil 'racket)
(newline 2))
(when msg
(let ((p (point)))
(insert msg)
(when key
(let ((end (point)))
(goto-char p)
(geiser-racket--purge-trace)
(mapc 'geiser-edit--buttonize-files geiser-racket--file-rxs)
(goto-char end)
(newline)))))
(or key (not (zerop (length msg)))))
;;; Trying to ascertain whether a buffer is mzscheme scheme:
(defun geiser-racket--guess ()
(or (save-excursion
(goto-char (point-min))
(re-search-forward "#lang " nil t))
(geiser-racket--explicit-module)))
;;; Implementation definition:
(define-geiser-implementation racket
(unsupported-procedures '(callers callees generic-methods))
(binary geiser-racket--binary)
(arglist geiser-racket--parameters)
(startup)
(prompt-regexp geiser-racket--prompt-regexp)
(marshall-procedure geiser-racket--geiser-procedure)
(find-module geiser-racket--get-module)
(enter-command geiser-racket--enter-command)
(import-command geiser-racket--import-command)
(exit-command geiser-racket--exit-command)
(find-symbol-begin geiser-racket--symbol-begin)
(display-error geiser-racket--display-error)
(display-help geiser-racket--external-help)
(check-buffer geiser-racket--guess)
(binding-forms geiser-racket--binding-forms)
(binding-forms* geiser-racket--binding-forms*))
(geiser-impl--add-to-alist 'regexp "\\.ss$" 'racket t)
(geiser-impl--add-to-alist 'regexp "\\.rkt$" 'racket t)
(provide 'geiser-racket)
;;; geiser-racket.el ends here
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