379 lines
14 KiB
EmacsLisp
379 lines
14 KiB
EmacsLisp
;;; inf-ruby.el --- Run a ruby process in a buffer
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;; Copyright (C) 1999-2008 Yukihiro Matsumoto, Nobuyoshi Nakada
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;; Author: Yukihiro Matsumoto, Nobuyoshi Nakada
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;; URL: http://github.com/nonsequitur/inf-ruby
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;; Created: 8 April 1998
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;; Keywords: languages ruby
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;; Version: 2.2.2
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;;; Commentary:
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;;
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;; inf-ruby.el provides a REPL buffer connected to an IRB subprocess.
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;;
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;; If you're installing manually, you'll need to:
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;; * drop the file somewhere on your load path (perhaps ~/.emacs.d)
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;; * Add the following lines to your .emacs file:
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;; (autoload 'inf-ruby "inf-ruby" "Run an inferior Ruby process" t)
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;; (autoload 'inf-ruby-keys "inf-ruby" "" t)
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;; (eval-after-load 'ruby-mode
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;; '(add-hook 'ruby-mode-hook 'inf-ruby-keys))
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;;; TODO:
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;;
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;; inferior-ruby-error-regexp-alist doesn't match this example
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;; SyntaxError: /home/eschulte/united/org/work/arf/arf/lib/cluster.rb:35: syntax error, unexpected '~', expecting kEND
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;; similarity = comparison_cache[m][n] ||= clusters[m] ~ clusters[n]
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;;
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;; M-p skips the first entry in the input ring.
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;;
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(require 'comint)
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(require 'compile)
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(require 'ruby-mode)
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(defvar inf-ruby-default-implementation "ruby"
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"Which ruby implementation to use if none is specified.")
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(defvar inf-ruby-first-prompt-pattern "^irb(.*)[0-9:]+0> *"
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"First prompt regex pattern of ruby interpreter.")
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(defvar inf-ruby-prompt-pattern "^\\(irb(.*)[0-9:]+[>*\"'] *\\)+"
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"Prompt regex pattern of ruby interpreter.")
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(defvar inf-ruby-mode-hook nil
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"*Hook for customising inf-ruby mode.")
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(defvar inf-ruby-mode-map
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(let ((map (copy-keymap comint-mode-map)))
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(define-key map (kbd "C-c C-l") 'inf-ruby-load-file)
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(define-key map (kbd "C-x C-e") 'ruby-send-last-sexp)
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(define-key map (kbd "TAB") 'inf-ruby-complete)
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map)
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"*Mode map for inf-ruby-mode")
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(defvar inf-ruby-implementations
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'(("ruby" . "irb --inf-ruby-mode -r irb/completion")
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("jruby" . "jruby -S irb -r irb/completion")
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("rubinius" . "rbx -r irb/completion")
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("yarv" . "irb1.9 --inf-ruby-mode -r irb/completion")) ;; TODO: ironruby?
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"An alist of ruby implementations to irb executable names.")
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;; TODO: do we need these two defvars?
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(defvar ruby-source-modes '(ruby-mode)
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"*Used to determine if a buffer contains Ruby source code.
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If it's loaded into a buffer that is in one of these major modes, it's
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considered a ruby source file by ruby-load-file.
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Used by these commands to determine defaults.")
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(defvar ruby-prev-l/c-dir/file nil
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"Caches the last (directory . file) pair.
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Caches the last pair used in the last ruby-load-file command.
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Used for determining the default in the
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next one.")
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(defvar inf-ruby-at-top-level-prompt-p t)
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(defconst inf-ruby-error-regexp-alist
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'(("SyntaxError: compile error\n^\\([^\(].*\\):\\([1-9][0-9]*\\):" 1 2)
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("^\tfrom \\([^\(].*\\):\\([1-9][0-9]*\\)\\(:in `.*'\\)?$" 1 2)))
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;;;###autoload
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(defun inf-ruby-keys ()
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"Set local key defs to invoke inf-ruby from ruby-mode."
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(define-key ruby-mode-map "\M-\C-x" 'ruby-send-definition)
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(define-key ruby-mode-map "\C-x\C-e" 'ruby-send-last-sexp)
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(define-key ruby-mode-map "\C-c\C-b" 'ruby-send-block)
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(define-key ruby-mode-map "\C-c\M-b" 'ruby-send-block-and-go)
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(define-key ruby-mode-map "\C-c\C-x" 'ruby-send-definition)
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(define-key ruby-mode-map "\C-c\M-x" 'ruby-send-definition-and-go)
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(define-key ruby-mode-map "\C-c\C-r" 'ruby-send-region)
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(define-key ruby-mode-map "\C-c\M-r" 'ruby-send-region-and-go)
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(define-key ruby-mode-map "\C-c\C-z" 'ruby-switch-to-inf)
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(define-key ruby-mode-map "\C-c\C-l" 'ruby-load-file)
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(define-key ruby-mode-map "\C-c\C-s" 'inf-ruby))
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(defvar inf-ruby-buffer nil "Current irb process buffer.")
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(defun inf-ruby-mode ()
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"Major mode for interacting with an inferior ruby (irb) process.
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The following commands are available:
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\\{inf-ruby-mode-map}
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A ruby process can be fired up with M-x inf-ruby.
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Customisation: Entry to this mode runs the hooks on comint-mode-hook and
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inf-ruby-mode-hook (in that order).
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You can send text to the inferior ruby process from other buffers containing
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Ruby source.
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ruby-switch-to-inf switches the current buffer to the ruby process buffer.
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ruby-send-definition sends the current definition to the ruby process.
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ruby-send-region sends the current region to the ruby process.
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ruby-send-definition-and-go, ruby-send-region-and-go,
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switch to the ruby process buffer after sending their text.
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Commands:
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Return after the end of the process' output sends the text from the
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end of process to point.
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Return before the end of the process' output copies the sexp ending at point
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to the end of the process' output, and sends it.
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Delete converts tabs to spaces as it moves back.
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Tab indents for ruby; with arugment, shifts rest
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of expression rigidly with the current line.
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C-M-q does Tab on each line starting within following expression.
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Paragraphs are separated only by blank lines. # start comments.
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If you accidentally suspend your process, use \\[comint-continue-subjob]
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to continue it."
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(interactive)
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(comint-mode)
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(setq comint-prompt-regexp inf-ruby-prompt-pattern)
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(ruby-mode-variables)
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(setq major-mode 'inf-ruby-mode)
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(setq mode-name "Inf-Ruby")
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(setq mode-line-process '(":%s"))
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(use-local-map inf-ruby-mode-map)
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(setq comint-input-filter (function inf-ruby-input-filter))
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(add-to-list 'comint-output-filter-functions 'inf-ruby-output-filter)
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(setq comint-get-old-input (function inf-ruby-get-old-input))
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(make-local-variable 'compilation-error-regexp-alist)
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(setq compilation-error-regexp-alist inf-ruby-error-regexp-alist)
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(compilation-shell-minor-mode t)
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(run-hooks 'inf-ruby-mode-hook))
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(defvar inf-ruby-filter-regexp "\\`\\s *\\S ?\\S ?\\s *\\'"
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"*Input matching this regexp are not saved on the history list.
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Defaults to a regexp ignoring all inputs of 0, 1, or 2 letters.")
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(defun inf-ruby-input-filter (str)
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"Don't save anything matching inf-ruby-filter-regexp"
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(not (string-match inf-ruby-filter-regexp str)))
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(defun inf-ruby-output-filter (output)
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"Check if the current prompt is a top-level prompt"
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(setq inf-ruby-at-top-level-prompt-p
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(string-match inf-ruby-prompt-pattern
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(car (last (split-string output "\n"))))))
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;; adapted from replace-in-string in XEmacs (subr.el)
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(defun inf-ruby-remove-in-string (str regexp)
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"Remove all matches in STR for REGEXP and returns the new string."
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(let ((rtn-str "") (start 0) match prev-start)
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(while (setq match (string-match regexp str start))
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(setq prev-start start
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start (match-end 0)
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rtn-str (concat rtn-str (substring str prev-start match))))
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(concat rtn-str (substring str start))))
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(defun inf-ruby-get-old-input ()
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"Snarf the sexp ending at point"
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(save-excursion
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(let ((end (point)))
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(re-search-backward inf-ruby-first-prompt-pattern)
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(inf-ruby-remove-in-string (buffer-substring (point) end)
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inf-ruby-prompt-pattern))))
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;;;###autoload
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(defun inf-ruby (&optional impl)
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"Run an inferior Ruby process in a buffer.
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With prefix argument, prompts for which Ruby implementation
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\(from the list `inf-ruby-implementations') to use. Runs the
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hooks `inf-ruby-mode-hook' \(after the `comint-mode-hook' is
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run)."
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(interactive (list (if current-prefix-arg
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(completing-read "Ruby Implementation: "
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(mapc #'car inf-ruby-implementations))
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inf-ruby-default-implementation)))
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(setq impl (or impl "ruby"))
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(let ((command (cdr (assoc impl inf-ruby-implementations))))
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(run-ruby command impl)))
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;;;###autoload
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(defun run-ruby (&optional command name)
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"Run an inferior Ruby process, input and output via buffer *ruby*.
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If there is a process already running in `*ruby*', switch to that buffer.
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With argument, allows you to edit the command line (default is value
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of `ruby-program-name'). Runs the hooks `inferior-ruby-mode-hook'
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\(after the `comint-mode-hook' is run).
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\(Type \\[describe-mode] in the process buffer for a list of commands.)"
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(interactive)
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(setq command (or command (cdr (assoc inf-ruby-default-implementation
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inf-ruby-implementations))))
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(setq name (or name "ruby"))
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(if (not (comint-check-proc inf-ruby-buffer))
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(let ((commandlist (split-string command)))
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(set-buffer (apply 'make-comint name (car commandlist)
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nil (cdr commandlist)))
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(inf-ruby-mode)))
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(pop-to-buffer (setq inf-ruby-buffer (format "*%s*" name))))
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(defun inf-ruby-proc ()
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"Returns the current IRB process. See variable inf-ruby-buffer."
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(or (get-buffer-process (if (eq major-mode 'inf-ruby-mode)
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(current-buffer)
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inf-ruby-buffer))
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(error "No current process. See variable inf-ruby-buffer")))
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;; These commands are added to the ruby-mode keymap:
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(defconst ruby-send-terminator "--inf-ruby-%x-%d-%d-%d--"
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"Template for irb here document terminator.
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Must not contain ruby meta characters.")
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(defconst inf-ruby-eval-binding "IRB.conf[:MAIN_CONTEXT].workspace.binding")
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(defconst ruby-eval-separator "")
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(defun ruby-send-region (start end)
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"Send the current region to the inferior Ruby process."
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(interactive "r")
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(let (term (file (or buffer-file-name (buffer-name))) line)
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(save-excursion
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(save-restriction
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(widen)
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(goto-char start)
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(setq line (+ start (forward-line (- start)) 1))
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(goto-char start)
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(while (progn
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(setq term (apply 'format ruby-send-terminator (random) (current-time)))
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(re-search-forward (concat "^" (regexp-quote term) "$") end t)))))
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;; compilation-parse-errors parses from second line.
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(save-excursion
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(let ((m (process-mark (inf-ruby-proc))))
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(set-buffer (marker-buffer m))
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(goto-char m)
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(insert ruby-eval-separator "\n")
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(set-marker m (point))))
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(comint-send-string (inf-ruby-proc) (format "eval <<'%s', %s, %S, %d\n"
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term inf-ruby-eval-binding
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file line))
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(comint-send-region (inf-ruby-proc) start end)
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(comint-send-string (inf-ruby-proc) (concat "\n" term "\n"))))
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(defun ruby-send-definition ()
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"Send the current definition to the inferior Ruby process."
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(interactive)
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(save-excursion
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(ruby-end-of-defun)
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(let ((end (point)))
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(ruby-beginning-of-defun)
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(ruby-send-region (point) end))))
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(defun ruby-send-last-sexp ()
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"Send the previous sexp to the inferior Ruby process."
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(interactive)
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(ruby-send-region (save-excursion (backward-sexp) (point)) (point)))
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(defun ruby-send-block ()
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"Send the current block to the inferior Ruby process."
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(interactive)
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(save-excursion
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(ruby-end-of-block)
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(end-of-line)
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(let ((end (point)))
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(ruby-beginning-of-block)
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(ruby-send-region (point) end))))
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(defun ruby-switch-to-inf (eob-p)
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"Switch to the ruby process buffer.
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With argument, positions cursor at end of buffer."
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(interactive "P")
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(if (get-buffer inf-ruby-buffer)
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(pop-to-buffer inf-ruby-buffer)
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(error "No current process buffer. See variable inf-ruby-buffer."))
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(cond (eob-p
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(push-mark)
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(goto-char (point-max)))))
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(defun ruby-send-region-and-go (start end)
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"Send the current region to the inferior Ruby process.
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Then switch to the process buffer."
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(interactive "r")
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(ruby-send-region start end)
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(ruby-switch-to-inf t))
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(defun ruby-send-definition-and-go ()
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"Send the current definition to the inferior Ruby.
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Then switch to the process buffer."
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(interactive)
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(ruby-send-definition)
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(ruby-switch-to-inf t))
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(defun ruby-send-block-and-go ()
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"Send the current block to the inferior Ruby.
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Then switch to the process buffer."
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(interactive)
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(ruby-send-block)
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(ruby-switch-to-inf t))
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(defun ruby-load-file (file-name)
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"Load a Ruby file into the inferior Ruby process."
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(interactive (comint-get-source "Load Ruby file: " ruby-prev-l/c-dir/file
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ruby-source-modes t)) ;; T because LOAD needs an exact name
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(comint-check-source file-name) ; Check to see if buffer needs saved.
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(setq ruby-prev-l/c-dir/file (cons (file-name-directory file-name)
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(file-name-nondirectory file-name)))
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(comint-send-string (inf-ruby-proc) (concat "(load \""
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file-name
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"\"\)\n")))
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(defun ruby-escape-single-quoted (str)
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(replace-regexp-in-string "'" "\\\\'"
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(replace-regexp-in-string "\n" "\\\\n"
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(replace-regexp-in-string "\\\\" "\\\\\\\\" str))))
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(defun inf-ruby-completions (seed)
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"Return a list of completions for the line of ruby code starting with SEED."
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(let* ((proc (get-buffer-process inf-ruby-buffer))
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(comint-filt (process-filter proc))
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(kept "") completions)
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(set-process-filter proc (lambda (proc string) (setq kept (concat kept string))))
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(process-send-string proc (format "puts IRB::InputCompletor::CompletionProc.call('%s').compact\n"
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(ruby-escape-single-quoted seed)))
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(while (and (not (string-match inf-ruby-prompt-pattern kept))
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(accept-process-output proc 2)))
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(setq completions (cdr (butlast (split-string kept "\r?\n") 2)))
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(set-process-filter proc comint-filt)
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completions))
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(defun inf-ruby-completion-at-point ()
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(if inf-ruby-at-top-level-prompt-p
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(let* ((curr (replace-regexp-in-string "\n$" "" (thing-at-point 'line)))
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(completions (inf-ruby-completions curr)))
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(if completions
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(if (= (length completions) 1)
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(car completions)
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(completing-read "possible completions: "
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completions nil t curr))))
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(message "Completion aborted: Not at a top-level prompt")
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nil))
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(defun inf-ruby-complete (command)
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"Complete the ruby code at point. Relies on the irb/completion
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Module used by readline when running irb through a terminal"
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(interactive (list (inf-ruby-completion-at-point)))
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(when command
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(kill-whole-line 0)
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(insert command)))
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(defun inf-ruby-complete-or-tab (&optional command)
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"Either complete the ruby code at point or call
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`indent-for-tab-command' if no completion is available."
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(interactive (list (inf-ruby-completion-at-point)))
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(if (not command)
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(call-interactively 'indent-for-tab-command)
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(inf-ruby-complete command)))
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;;;###autoload
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(eval-after-load 'ruby-mode
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'(add-hook 'ruby-mode-hook 'inf-ruby-keys))
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(provide 'inf-ruby)
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;;; inf-ruby.el ends here
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