137 lines
4.9 KiB
EmacsLisp
137 lines
4.9 KiB
EmacsLisp
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;; This file adds support for ruby-debug (rdebug) in Emacs.
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;; Copyright (C) 2007 Martin Nordholts <enselic@gmail.com>
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;;
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;; This file is based on 'rubydb3x.el' that comes with Ruby which is
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;; Copyright (C) Yukihiro Matsumoto aka Matz
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;;
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;; Installation:
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;; -------------
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;;
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;; 1. Make sure you have ruby-debug on your system (test by running
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;; the commmand 'rdebug -v' in a shell).
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;;
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;; 2. Copy this file into e.g. ~/.elisp and make sure this is in
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;; your ~/.emacs:
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;;
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;; (add-to-list 'load-path "~/.elisp")
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;; (load-library "rdebug")
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;;
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;; you can then start the debugger with M-x rdebug
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;;
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;; 3. Setup convenient keybindings etc. This is what I have:
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;;
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;; (global-set-key [f9] 'gud-step)
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;; (global-set-key [f10] 'gud-next)
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;; (global-set-key [f11] 'gud-cont)
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;;
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;; (global-set-key "\C-c\C-d" 'rdebug)
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;;
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;; 4. Debug like crazy!
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;;
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;; Bugs:
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;; -----
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;;
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;; Basic functionality works fine, though there might be a bug hiding somewhere.
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(require 'gud)
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(provide 'rdebug)
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;; ======================================================================
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;; rdebug functions
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;;; History of argument lists passed to rdebug.
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(defvar gud-rdebug-history nil)
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(if (fboundp 'gud-overload-functions)
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(defun gud-rdebug-massage-args (file args)
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(cons file args))
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(defun gud-rdebug-massage-args (file args)
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args))
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;; There's no guarantee that Emacs will hand the filter the entire
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;; marker at once; it could be broken up across several strings. We
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;; might even receive a big chunk with several markers in it. If we
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;; receive a chunk of text which looks like it might contain the
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;; beginning of a marker, we save it here between calls to the
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;; filter.
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(defvar gud-rdebug-marker-acc "")
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(make-variable-buffer-local 'gud-rdebug-marker-acc)
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(defun gud-rdebug-marker-filter (string)
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(setq gud-rdebug-marker-acc (concat gud-rdebug-marker-acc string))
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(let ((output ""))
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;; Process all the complete markers in this chunk.
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(while (string-match "\\([^:\n]*\\):\\([0-9]+\\):.*\n"
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gud-rdebug-marker-acc)
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(setq
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;; Extract the frame position from the marker.
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gud-last-frame
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(cons (substring gud-rdebug-marker-acc (match-beginning 1) (match-end 1))
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(string-to-int (substring gud-rdebug-marker-acc
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(match-beginning 2)
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(match-end 2))))
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;; Append any text before the marker to the output we're going
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;; to return - we don't include the marker in this text.
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output (concat output
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(substring gud-rdebug-marker-acc 0 (match-beginning 0)))
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;; Set the accumulator to the remaining text.
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gud-rdebug-marker-acc (substring gud-rdebug-marker-acc (match-end 0))))
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(setq output (concat output gud-rdebug-marker-acc)
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gud-rdebug-marker-acc "")
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output))
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(defun gud-rdebug-find-file (f)
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(save-excursion
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(let ((buf (find-file-noselect f)))
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(set-buffer buf)
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;; (gud-make-debug-menu)
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buf)))
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(defvar rdebug-command-name "rdebug"
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"File name for executing rdebug.")
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;;;###autoload
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(defun rdebug (command-line)
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"Run rdebug on program FILE in buffer *gud-FILE*.
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The directory containing FILE becomes the initial working directory
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and source-file directory for your debugger."
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(interactive
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(list (read-from-minibuffer "Run rdebug (like this): "
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(if (consp gud-rdebug-history)
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(car gud-rdebug-history)
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(concat rdebug-command-name " "))
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nil nil
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'(gud-rdebug-history . 1))))
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(if (not (fboundp 'gud-overload-functions))
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(gud-common-init command-line 'gud-rdebug-massage-args
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'gud-rdebug-marker-filter 'gud-rdebug-find-file)
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(gud-overload-functions '((gud-massage-args . gud-rdebug-massage-args)
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(gud-marker-filter . gud-rdebug-marker-filter)
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(gud-find-file . gud-rdebug-find-file)))
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(gud-common-init command-line rdebug-command-name))
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(gud-def gud-break "break %d%f:%l" "\C-b" "Set breakpoint at current line in current file.")
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; (gud-def gud-remove "delete %d%f:%l" "\C-d" "Remove breakpoint at current line in current file.")
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(gud-def gud-step "step" "\C-s" "Step one source line with display.")
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(gud-def gud-next "next" "\C-n" "Step one line (skip functions).")
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(gud-def gud-cont "cont" "\C-r" "Continue with display.")
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(gud-def gud-finish "finish" "\C-f" "Finish executing current function.")
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(gud-def gud-up "up %p" "<" "Up N stack frames (numeric arg).")
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(gud-def gud-down "down %p" ">" "Down N stack frames (numeric arg).")
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(gud-def gud-print "p %e" "\C-p" "Evaluate ruby expression at point.")
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(setq comint-prompt-regexp "^(rdb:-) ")
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(if (boundp 'comint-last-output-start)
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(set-marker comint-last-output-start (point)))
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(set (make-local-variable 'paragraph-start) comint-prompt-regexp)
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(run-hooks 'rdebug-mode-hook)
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)
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