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- ;;; cmuscheme.el -- Scheme process in a buffer. Adapted from tea.el.
- ;;; Copyright Olin Shivers (1988)
- ;;; Please imagine a long, tedious, legalistic 5-page gnu-style copyright
- ;;; notice appearing here to the effect that you may use this code any
- ;;; way you like, as long as you don't charge money for it, remove this
- ;;; notice, or hold me liable for its results.
- ;;;
- ;;; This is a customisation of comint-mode (see comint.el)
- ;;;
- ;;; Written by Olin Shivers (olin.shivers@cs.cmu.edu). With bits and pieces
- ;;; lifted from scheme.el, shell.el, clisp.el, newclisp.el, cobol.el, et al..
- ;;; 8/88
- ;;;
- ;;; Please send me bug reports, bug fixes, and extensions, so that I can
- ;;; merge them into the master source.
- ;;;
- ;;; Fix log:
- ;;; Removed -emacs flag from process invocation. It's only useful for
- ;;; cscheme, and makes cscheme assume it's running under xscheme.el,
- ;;; which messes things up royally. A bug. 2/15/89 Olin
- ;;;
- ;;; NOTE: MIT cscheme, when invoked with the -emacs flag, has a special
- ;;; user interface that communicates process state back to the superior emacs
- ;;; by outputing special control sequences. The gnumacs package, xscheme.el,
- ;;; has lots and lots of special purpose code to read these control sequences,
- ;;; and so is very tightly integrated with the cscheme process. Cmuscheme mode
- ;;; does *not* provide this functionality. If you are a cscheme user, you
- ;;; may prefer to use the xscheme.el/cscheme -emacs interaction. Interested
- ;;; parties are invited to port xscheme functionality on top of comint mode...
-
- ;; YOUR .EMACS FILE
- ;;=============================================================================
- ;; Some suggestions for your .emacs file.
- ;;
- ;; ; If cmuscheme lives in some non-standard directory, you must tell emacs
- ;; ; where to get it. This may or may not be necessary.
- ;; (setq load-path (cons (expand-file-name "~jones/lib/emacs") load-path))
- ;;
- ;; ; Autoload run-scheme from file cmuscheme.el
- ;; (autoload 'run-scheme "cmuscheme"
- ;; "Run an inferior Scheme process."
- ;; t)
- ;;
- ;; ; Files ending in ".scm" are Scheme source,
- ;; ; so put their buffers in scheme-mode.
- ;; (setq auto-mode-alist
- ;; (cons '("\\.scm$" . scheme-mode)
- ;; auto-mode-alist))
- ;;
- ;; ; Define C-c C-t to run my favorite command in inferior scheme mode:
- ;; (setq cmuscheme-load-hook
- ;; '((lambda () (define-key inferior-scheme-mode-map "\C-c\C-t"
- ;; 'favorite-cmd))))
- ;;;
- ;;; Unfortunately, scheme.el defines run-scheme to autoload from xscheme.el.
- ;;; This will womp your declaration to autoload run-scheme from cmuscheme.el
- ;;; if you haven't loaded cmuscheme in before scheme. Two fixes:
- ;;; - load cmuscheme.el in your .emacs: (load-library 'cmuscheme)
- ;;; - change autoload declaration in scheme.el to point to cmuscheme.el:
- ;;; (autoload 'run-scheme "cmuscheme" "Run an inferior Scheme" t)
- ;;; *or* just delete the autoload declaration from scheme.el altogether,
- ;;; which will allow the autoload in your .emacs to have its say.
-
- (provide 'cmuscheme)
- (require 'scheme)
- (require 'comint)
-
- ;;; INFERIOR SCHEME MODE STUFF
- ;;;============================================================================
-
- (defvar inferior-scheme-mode-hook nil
- "*Hook for customising inferior-scheme mode.")
- (defvar inferior-scheme-mode-map nil)
-
- (cond ((not inferior-scheme-mode-map)
- (setq inferior-scheme-mode-map
- (full-copy-sparse-keymap comint-mode-map))
- (define-key scheme-mode-map "\M-\C-x" ;gnu convention
- 'scheme-send-definition)
- (define-key inferior-scheme-mode-map "\C-cl" 'scheme-load-file)
- (define-key inferior-scheme-mode-map "\C-ck" 'scheme-compile-file)
- (scheme-mode-commands inferior-scheme-mode-map)))
-
- ;; Install the process communication commands in the scheme-mode keymap.
- (define-key scheme-mode-map "\M-\C-x" 'scheme-send-definition);gnu convention
- (define-key scheme-mode-map "\C-ce" 'scheme-send-definition)
- (define-key scheme-mode-map "\C-c\C-e" 'scheme-send-definition-and-go)
- (define-key scheme-mode-map "\C-cr" 'scheme-send-region)
- (define-key scheme-mode-map "\C-c\C-r" 'scheme-send-region-and-go)
- (define-key scheme-mode-map "\C-cc" 'scheme-compile-definition)
- (define-key scheme-mode-map "\C-c\C-c" 'scheme-compile-definition-and-go)
- (define-key scheme-mode-map "\C-cz" 'switch-to-scheme)
- (define-key scheme-mode-map "\C-cl" 'scheme-load-file)
- (define-key scheme-mode-map "\C-ck" 'scheme-compile-file) ;k for "kompile"
-
- (defun inferior-scheme-mode ()
- "Major mode for interacting with an inferior Scheme process.
-
- The following commands are available:
- \\{inferior-scheme-mode-map}
-
- A Scheme process can be fired up with M-x run-scheme.
-
- Customisation: Entry to this mode runs the hooks on comint-mode-hook and
- inferior-scheme-mode-hook (in that order).
-
- You can send text to the inferior Scheme process from other buffers containing
- Scheme source.
- switch-to-scheme switches the current buffer to the Scheme process buffer.
- scheme-send-definition sends the current definition to the Scheme process.
- scheme-compile-definition compiles the current definition.
- scheme-send-region sends the current region to the Scheme process.
- scheme-compile-region compiles the current region.
-
- scheme-send-definition-and-go, scheme-compile-definition-and-go,
- scheme-send-region-and-go, and scheme-compile-region-and-go
- switch to the Scheme process buffer after sending their text.
-
- Commands:
- Return after the end of the process' output sends the text from the
- end of process to point.
- Return before the end of the process' output copies the sexp ending at point
- to the end of the process' output, and sends it.
- Delete converts tabs to spaces as it moves back.
- Tab indents for Scheme; with argument, shifts rest
- of expression rigidly with the current line.
- C-M-q does Tab on each line starting within following expression.
- Paragraphs are separated only by blank lines. Semicolons start comments.
- If you accidentally suspend your process, use \\[comint-continue-subjob]
- to continue it."
- (interactive)
- (comint-mode)
- ;; Customise in inferior-scheme-mode-hook
- (setq comint-prompt-regexp "^[^>]*>+ *") ; OK for cscheme, oaklisp, T,...
- (scheme-mode-variables)
- (setq major-mode 'inferior-scheme-mode)
- (setq mode-name "Inferior Scheme")
- (setq mode-line-process '(": %s"))
- (use-local-map inferior-scheme-mode-map)
- (setq comint-input-filter (function scheme-input-filter))
- (setq comint-input-sentinel (function ignore))
- (setq comint-get-old-input (function scheme-get-old-input))
- (run-hooks 'inferior-scheme-mode-hook))
-
- (defun scheme-input-filter (str)
- "Don't save anything matching inferior-scheme-filter-regexp"
- (not (string-match inferior-scheme-filter-regexp str)))
-
- (defvar inferior-scheme-filter-regexp "\\`\\s *\\S ?\\S ?\\s *\\'"
- "*Input matching this regexp are not saved on the history list.
- Defaults to a regexp ignoring all inputs of 0, 1, or 2 letters.")
-
- (defun scheme-get-old-input ()
- "Snarf the sexp ending at point"
- (save-excursion
- (let ((end (point)))
- (backward-sexp)
- (buffer-substring (point) end))))
-
- (defun scheme-args-to-list (string)
- (if (equal string "") ;added by tm@cs.tut.fi Feb 92.
- '()
- (let ((where (string-match "[ \t]" string)))
- (cond ((null where) (list string))
- ((not (= where 0))
- (cons (substring string 0 where)
- (scheme-args-to-list (substring string (+ 1 where)
- (length string)))))
- (t (let ((pos (string-match "[^ \t]" string)))
- (if (null pos)
- nil
- (scheme-args-to-list (substring string pos
- (length string))))))))))
-
- (defvar scheme-program-name "scheme"
- "*Program invoked by the scheme and run-scheme commands")
-
- (defun scheme (arg)
- "Like run-scheme, except prompts for a command line."
- (interactive "sExtra arguments to Scheme: ")
- (switch-to-buffer
- (apply 'make-comint (append (list "scheme" scheme-program-name nil)
- (scheme-args-to-list arg))))
- (inferior-scheme-mode))
-
- (defun run-scheme (arg)
- "Run an inferior Scheme process, input and output via buffer *scheme*.
- With argument, it asks for a command line. Take the program name from the
- variable scheme-program-name. Runs the hooks from inferior-scheme-mode-hook
- \(after the comint-mode-hook is run).
- \(Type \\[describe-mode] in the process buffer for a list of commands.)"
- (interactive "P")
- (if arg (call-interactively 'scheme)
- (scheme "")))
-
- (defun scheme-send-region (start end)
- "Send the current region to the inferior Scheme process."
- (interactive "r")
- (send-region "scheme" start end)
- (send-string "scheme" "\n"))
-
- (defun scheme-send-definition ()
- "Send the current definition to the inferior Scheme process."
- (interactive)
- (save-excursion
- (end-of-defun)
- (let ((end (point)))
- (beginning-of-defun)
- (scheme-send-region (point) end))))
-
- (defvar scheme-compile-exp-command "(compile '%s)"
- "*Template for issuing commands to compile arbitrary Scheme expressions.")
-
- (defun scheme-compile-region (start end)
- "Compile the current region in the inferior Scheme process
- \(A BEGIN is wrapped around the region: (BEGIN <region>))"
- (interactive "r")
- (send-string "scheme" (format scheme-compile-exp-command
- (format "(begin %s)"
- (buffer-substring start end))))
- (send-string "scheme" "\n"))
-
- (defun scheme-compile-definition ()
- "Compile the current definition in the inferior Scheme process."
- (interactive)
- (save-excursion
- (end-of-defun)
- (let ((end (point)))
- (beginning-of-defun)
- (scheme-compile-region (point) end))))
-
- (defun switch-to-scheme (eob-p)
- "Switch to the *scheme* buffer.
- With argument, positions cursor at end of buffer."
- (interactive "P")
- (pop-to-buffer "*scheme*")
- (cond (eob-p
- (push-mark)
- (goto-char (point-max)))))
-
- (defun scheme-send-region-and-go (start end)
- "Send the current region to the inferior Scheme process,
- and switch to the process buffer."
- (interactive "r")
- (scheme-send-region start end)
- (switch-to-scheme t))
-
- (defun scheme-send-definition-and-go ()
- "Send the current definition to the inferior Scheme,
- and switch to the process buffer."
- (interactive)
- (scheme-send-definition)
- (switch-to-scheme t))
-
- (defun scheme-compile-definition-and-go ()
- "Compile the current definition in the inferior Scheme,
- and switch to the process buffer."
- (interactive)
- (scheme-compile-definition)
- (switch-to-scheme t))
-
- (defun scheme-compile-region-and-go (start end)
- "Compile the current region in the inferior Scheme,
- and switch to the process buffer."
- (interactive "r")
- (scheme-compile-region start end)
- (switch-to-scheme t))
-
- (defvar scheme-source-modes '(scheme-mode)
- "*Used to determine if a buffer contains Scheme source code.
- If it's loaded into a buffer that is in one of these major modes, it's
- considered a scheme source file by scheme-load-file and scheme-compile-file.
- Used by these commands to determine defaults.")
-
- (defvar scheme-prev-l/c-dir/file nil
- "Caches the (directory . file) pair used in the last scheme-load-file or
- scheme-compile-file command. Used for determining the default in the
- next one.")
-
- (defun scheme-load-file (file-name)
- "Load a Scheme file into the inferior Scheme process."
- (interactive (comint-get-source "Load Scheme file: " scheme-prev-l/c-dir/file
- scheme-source-modes t)) ; T because LOAD
- ; needs an exact name
- (comint-check-source file-name) ; Check to see if buffer needs saved.
- (setq scheme-prev-l/c-dir/file (cons (file-name-directory file-name)
- (file-name-nondirectory file-name)))
- p end-string "scheme" (concat "(load \""
- file-name
- "\"\)\n"))
- (switch-to-scheme t))
-
- (defun scheme-compile-file (file-name)
- "Compile a Scheme file in the inferior Scheme process."
- (interactive (comint-get-source "Compile Scheme file: "
- scheme-prev-l/c-dir/file
- scheme-source-modes
- nil)) ; NIL because COMPILE doesn't
- ; need an exact name.
- (comint-check-source file-name) ; Check to see if buffer needs saved.
- (setq scheme-prev-l/c-dir/file (cons (file-name-directory file-name)
- (file-name-nondirectory file-name)))
- (send-string "scheme" (concat "(compile-file \""
- file-name
- "\"\)\n"))
- (switch-to-scheme t))
-
-
- ;;; Do the user's customisation...
-
- (defvar cmuscheme-load-hook nil
- "This hook is run when cmuscheme is loaded in.
- This is a good place to put keybindings.")
-
- (run-hooks 'cmuscheme-load-hook)
-