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511dc44 initial import
Laurent Sansonetti authored Feb 25, 2008
1 (require 'gud)
2 (provide 'rubydb)
3
4 ;; ======================================================================
5 ;; rubydb functions
6
7 ;;; History of argument lists passed to rubydb.
8 (defvar gud-rubydb-history nil)
9
10 (if (fboundp 'gud-overload-functions)
11 (defun gud-rubydb-massage-args (file args)
12 (cons "-r" (cons "debug" (cons file args))))
13 (defun gud-rubydb-massage-args (file args)
14 (cons "-r" (cons "debug" args))))
15
16 ;; There's no guarantee that Emacs will hand the filter the entire
17 ;; marker at once; it could be broken up across several strings. We
18 ;; might even receive a big chunk with several markers in it. If we
19 ;; receive a chunk of text which looks like it might contain the
20 ;; beginning of a marker, we save it here between calls to the
21 ;; filter.
22 (defvar gud-rubydb-marker-acc "")
23 (make-variable-buffer-local 'gud-rubydb-marker-acc)
24
25 (defun gud-rubydb-marker-filter (string)
26 (setq gud-rubydb-marker-acc (concat gud-rubydb-marker-acc string))
27 (let ((output ""))
28
29 ;; Process all the complete markers in this chunk.
30 (while (string-match "\032\032\\([^:\n]*\\):\\([0-9]*\\):.*\n"
31 gud-rubydb-marker-acc)
32 (setq
33
34 ;; Extract the frame position from the marker.
35 gud-last-frame
36 (cons (substring gud-rubydb-marker-acc (match-beginning 1) (match-end 1))
37 (string-to-int (substring gud-rubydb-marker-acc
38 (match-beginning 2)
39 (match-end 2))))
40
41 ;; Append any text before the marker to the output we're going
42 ;; to return - we don't include the marker in this text.
43 output (concat output
44 (substring gud-rubydb-marker-acc 0 (match-beginning 0)))
45
46 ;; Set the accumulator to the remaining text.
47 gud-rubydb-marker-acc (substring gud-rubydb-marker-acc (match-end 0))))
48
49 ;; Does the remaining text look like it might end with the
50 ;; beginning of another marker? If it does, then keep it in
51 ;; gud-rubydb-marker-acc until we receive the rest of it. Since we
52 ;; know the full marker regexp above failed, it's pretty simple to
53 ;; test for marker starts.
54 (if (string-match "\032.*\\'" gud-rubydb-marker-acc)
55 (progn
56 ;; Everything before the potential marker start can be output.
57 (setq output (concat output (substring gud-rubydb-marker-acc
58 0 (match-beginning 0))))
59
60 ;; Everything after, we save, to combine with later input.
61 (setq gud-rubydb-marker-acc
62 (substring gud-rubydb-marker-acc (match-beginning 0))))
63
64 (setq output (concat output gud-rubydb-marker-acc)
65 gud-rubydb-marker-acc ""))
66
67 output))
68
69 (defun gud-rubydb-find-file (f)
70 (save-excursion
71 (let ((buf (find-file-noselect f)))
72 (set-buffer buf)
73 ;; (gud-make-debug-menu)
74 buf)))
75
76 (defvar rubydb-command-name "ruby"
77 "File name for executing ruby.")
78
79 ;;;###autoload
80 (defun rubydb (command-line)
81 "Run rubydb on program FILE in buffer *gud-FILE*.
82 The directory containing FILE becomes the initial working directory
83 and source-file directory for your debugger."
84 (interactive
85 (list (read-from-minibuffer "Run rubydb (like this): "
86 (if (consp gud-rubydb-history)
87 (car gud-rubydb-history)
88 (concat rubydb-command-name " "))
89 nil nil
90 '(gud-rubydb-history . 1))))
91
92 (if (not (fboundp 'gud-overload-functions))
93 (gud-common-init command-line 'gud-rubydb-massage-args
94 'gud-rubydb-marker-filter 'gud-rubydb-find-file)
95 (gud-overload-functions '((gud-massage-args . gud-rubydb-massage-args)
96 (gud-marker-filter . gud-rubydb-marker-filter)
97 (gud-find-file . gud-rubydb-find-file)))
98 (gud-common-init command-line rubydb-command-name))
99
100 (gud-def gud-break "b %l" "\C-b" "Set breakpoint at current line.")
101 ; (gud-def gud-remove "clear %l" "\C-d" "Remove breakpoint at current line")
102 (gud-def gud-step "s" "\C-s" "Step one source line with display.")
103 (gud-def gud-next "n" "\C-n" "Step one line (skip functions).")
104 (gud-def gud-cont "c" "\C-r" "Continue with display.")
105 (gud-def gud-finish "finish" "\C-f" "Finish executing current function.")
106 (gud-def gud-up "up %p" "<" "Up N stack frames (numeric arg).")
107 (gud-def gud-down "down %p" ">" "Down N stack frames (numeric arg).")
108 (gud-def gud-print "p %e" "\C-p" "Evaluate ruby expression at point.")
109
110 (setq comint-prompt-regexp "^(rdb:-) ")
111 (if (boundp 'comint-last-output-start)
112 (set-marker comint-last-output-start (point)))
113 (set (make-local-variable 'paragraph-start) comint-prompt-regexp)
114 (run-hooks 'rubydb-mode-hook)
115 )
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