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;; geiser-guile.el -- guile's implementation of the geiser protocols
;; 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: Sun Mar 08, 2009 23:03
(require 'geiser-syntax)
(require 'geiser-custom)
(require 'geiser-base)
(require 'geiser-eval)
(require 'geiser-edit)
(require 'geiser)
;;; Customization:
(defgroup geiser-guile nil
"Customization for Geiser's Guile flavour."
:group 'geiser)
(geiser-custom--defcustom geiser-guile-binary
(cond ((eq system-type 'windows-nt) "guile.exe")
((eq system-type 'darwin) "guile")
(t "guile"))
"Name to use to call the Guile executable when starting a REPL."
:type '(choice string (repeat string))
:group 'geiser-guile)
(geiser-custom--defcustom geiser-guile-load-path nil
"A list of paths to be added to Guile's load path when it's
started."
:type '(repeat file)
:group 'geiser-guile)
(geiser-custom--defcustom geiser-guile-init-file "~/.guile-geiser"
"Initialization file with user code for the Guile REPL."
:type 'string
:group 'geiser-guile)
;;; REPL support:
(defun geiser-guile--binary ()
(if (listp geiser-guile-binary)
(car geiser-guile-binary)
geiser-guile-binary))
(defun geiser-guile--parameters ()
"Return a list with all parameters needed to start Guile.
This function uses `geiser-guile-init-file' if it exists."
(let ((init-file (and (stringp geiser-guile-init-file)
(expand-file-name geiser-guile-init-file))))
`(,@(and (listp geiser-guile-binary) (cdr geiser-guile-binary))
"-q" "-L" ,(expand-file-name "guile/" geiser-scheme-dir)
,@(apply 'append (mapcar (lambda (p) (list "-L" p)) geiser-guile-load-path))
,@(and init-file (file-readable-p init-file) (list "-l" init-file)))))
(defconst geiser-guile--prompt-regexp "^[^() \n]+@([^)]*?)> ")
(defconst geiser-guile--debugger-prompt-regexp
"^[^() \n]+@([^)]*?) \\[[0-9]+\\]> ")
(defconst geiser-guile--debugger-preamble-regexp
"^Entering a new prompt\\. ")
;;; Evaluation support:
(defun geiser-guile--geiser-procedure (proc)
(let ((proc (intern (format "ge:%s" (if (eq proc 'eval) 'compile proc)))))
`(@ (geiser emacs) ,proc)))
(defconst geiser-guile--module-re
"(define-module +\\(([^)]+)\\)")
(defun geiser-guile--get-module (&optional module)
(cond ((null module)
(save-excursion
(ignore-errors
(while (not (zerop (geiser-syntax--nesting-level)))
(backward-up-list)))
(if (re-search-backward geiser-guile--module-re nil t)
(geiser-guile--get-module (match-string-no-properties 1))
:f)))
((listp module) module)
((stringp module)
(or (ignore-errors
(car (geiser-syntax--read-from-string module))) :f))
(t :f)))
(defun geiser-guile--module-cmd (module fmt &optional def)
(when module
(let* ((module (geiser-guile--get-module module))
(module (cond ((or (null module) (eq module :f)) def)
(t (format "%s" module)))))
(and module (format fmt module)))))
(defun geiser-guile--import-command (module)
(geiser-guile--module-cmd module ",use %s"))
(defun geiser-guile--enter-command (module)
(geiser-guile--module-cmd module ",m %s" "(guile-user)"))
(defun geiser-guile--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))))
;;; Error display
(defvar geiser-guile--file-cache (make-hash-table :test 'equal))
(defun geiser-guile--resolve-file (file)
(when (and (stringp file) (not (string-equal file "unknown file")))
(if (file-name-absolute-p file) file
(or (gethash file geiser-guile--file-cache)
(puthash file
(geiser-eval--send/result `(:eval ((:ge find-file) ,file)))
geiser-guile--file-cache)))))
(defconst geiser-guile--file-rx
"^In \\([^\n:]+\\):\n *\\([[:digit:]]+\\|\\?\\):")
(defun geiser-guile--find-files ()
(with--geiser-implementation 'guile
(save-excursion
(while (re-search-forward geiser-guile--file-rx nil t)
(let ((file (match-string 1))
(beg (match-beginning 1))
(end (match-end 1))
(line (string-to-number (or (match-string 2) "0"))))
(let ((file (geiser-guile--resolve-file file)))
(when file
(geiser-edit--make-link beg end file line 0))))))))
(defun geiser-guile--display-error (module key msg)
(if (eq key 'geiser-debugger)
(progn
(goto-char (point-max))
(comint-send-string nil ",bt\n"))
(when key
(insert "Error: ")
(geiser--insert-with-face (format "%s" key) 'bold)
(newline 2))
(when msg
(let ((p (point)))
(insert msg)
(goto-char p)
(geiser-guile--find-files))))
t)
;;; Trying to ascertain whether a buffer is Guile Scheme:
(defun geiser-guile--guess ()
(save-excursion
(goto-char (point-min))
(re-search-forward geiser-guile--module-re nil t)))
;;; Compilation shell regexps
(defconst geiser-guile--path-rx "^In \\([^:\n ]+\\):\n")
(defconst geiser-guile--rel-path-rx "^In +\\([^/\n :]+\\):\n")
(make-variable-buffer-local
(defvar geiser-guile--load-path nil))
(defun geiser-guile--load-path ()
(geiser-eval--send/result `(:eval (:scm "%load-path"))))
(defun geiser-guile--find-in-load-path (f ps)
(when ps
(let ((c (expand-file-name f (car ps))))
(or (and (file-exists-p c) c)
(geiser-guile--find-in-load-path f (cdr ps))))))
(defun geiser-guile--resolve-file-x ()
(let ((f (match-string-no-properties 1)))
(if (file-name-absolute-p f)
(list f)
(let ((f (geiser-guile--find-in-load-path f geiser-guile--load-path)))
(and f (list f))))))
(defun geiser-guile--startup ()
(set (make-local-variable 'compilation-error-regexp-alist)
`((,geiser-guile--path-rx geiser-guile--resolve-file-x)
("^ *\\([0-9]+\\): +" nil 1)
("at \\(/[^:\n]+\\):\\([[:digit:]]+\\):\\([[:digit:]]+\\)" 1 2 3)))
(setq geiser-guile--load-path (geiser-guile--load-path))
(setq geiser-con--debugging-inhibits-eval nil)
(compilation-setup t)
(font-lock-add-keywords nil
`((,geiser-guile--path-rx 1
compilation-error-face))))
;;; Implementation definition:
(define-geiser-implementation guile
(binary geiser-guile--binary)
(arglist geiser-guile--parameters)
(startup geiser-guile--startup)
(prompt-regexp geiser-guile--prompt-regexp)
(debugger-prompt-regexp geiser-guile--debugger-prompt-regexp)
(debugger-preamble-regexp geiser-guile--debugger-preamble-regexp)
(marshall-procedure geiser-guile--geiser-procedure)
(find-module geiser-guile--get-module)
(enter-command geiser-guile--enter-command)
(import-command geiser-guile--import-command)
(find-symbol-begin geiser-guile--symbol-begin)
(display-error geiser-guile--display-error)
(display-help)
(check-buffer geiser-guile--guess))
(geiser-impl--add-to-alist 'regexp "\\.scm$" 'guile nil)
(provide 'geiser-guile)
;;; geiser-guile.el ends here
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