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1 ;;; inf-lisp.el --- an inferior-lisp mode
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2 ;;; Copyright (C) 1988, 1993, 1994 Free Software Foundation, Inc.
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3
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4 ;; Author: Olin Shivers <shivers@cs.cmu.edu>
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5 ;; Keywords: processes, lisp
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6
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7 ;; This file is part of XEmacs.
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8
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9 ;; XEmacs is free software; you can redistribute it and/or modify it
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10 ;; under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 2, or (at your option)
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12 ;; any later version.
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13
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14 ;; XEmacs is distributed in the hope that it will be useful, but
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15 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 ;; General Public License for more details.
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18
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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21 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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22
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23 ;;; Synched up with: FSF 19.30.
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24
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25 ;;; Commentary:
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26
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27 ;;; Hacked from tea.el by Olin Shivers (shivers@cs.cmu.edu). 8/88
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28
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29 ;;; This file defines a a lisp-in-a-buffer package (inferior-lisp
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30 ;;; mode) built on top of comint mode. This version is more
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31 ;;; featureful, robust, and uniform than the Emacs 18 version. The
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32 ;;; key bindings are also more compatible with the bindings of Hemlock
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33 ;;; and Zwei (the Lisp Machine emacs).
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34
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35 ;;; Since this mode is built on top of the general command-interpreter-in-
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36 ;;; a-buffer mode (comint mode), it shares a common base functionality,
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37 ;;; and a common set of bindings, with all modes derived from comint mode.
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38 ;;; This makes these modes easier to use.
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39
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40 ;;; For documentation on the functionality provided by comint mode, and
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41 ;;; the hooks available for customizing it, see the file comint.el.
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42 ;;; For further information on inferior-lisp mode, see the comments below.
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43
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44 ;;; Needs fixin:
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45 ;;; The load-file/compile-file default mechanism could be smarter -- it
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46 ;;; doesn't know about the relationship between filename extensions and
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47 ;;; whether the file is source or executable. If you compile foo.lisp
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48 ;;; with compile-file, then the next load-file should use foo.bin for
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49 ;;; the default, not foo.lisp. This is tricky to do right, particularly
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50 ;;; because the extension for executable files varies so much (.o, .bin,
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51 ;;; .lbin, .mo, .vo, .ao, ...).
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52 ;;;
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53 ;;; It would be nice if inferior-lisp (and inferior scheme, T, ...) modes
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54 ;;; had a verbose minor mode wherein sending or compiling defuns, etc.
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55 ;;; would be reflected in the transcript with suitable comments, e.g.
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56 ;;; ";;; redefining fact". Several ways to do this. Which is right?
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57 ;;;
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58 ;;; When sending text from a source file to a subprocess, the process-mark can
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59 ;;; move off the window, so you can lose sight of the process interactions.
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60 ;;; Maybe I should ensure the process mark is in the window when I send
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61 ;;; text to the process? Switch selectable?
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62
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63 ;;; Code:
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64
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65 (require 'comint)
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66 (require 'lisp-mode)
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67
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68
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69 ;;;jwz: ilisp is better, don't ###autoload
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70 (defvar inferior-lisp-filter-regexp "\\`\\s *\\(:\\(\\w\\|\\s_\\)\\)?\\s *\\'"
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71 "*What not to save on inferior Lisp's input history.
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72 Input matching this regexp is not saved on the input history in Inferior Lisp
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73 mode. Default is whitespace followed by 0 or 1 single-letter colon-keyword
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74 \(as in :a, :c, etc.)")
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75
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76 (defvar inferior-lisp-mode-map nil)
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77 (cond ((not inferior-lisp-mode-map)
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78 (setq inferior-lisp-mode-map (make-sparse-keymap))
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79 (set-keymap-name inferior-lisp-mode-map 'inferior-lisp-mode-map)
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80 (set-keymap-parents inferior-lisp-mode-map
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81 (list comint-mode-map shared-lisp-mode-map))
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82 (define-key inferior-lisp-mode-map "\C-x\C-e" 'lisp-eval-last-sexp)
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83 (define-key inferior-lisp-mode-map "\C-c\C-l" 'lisp-load-file)
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84 (define-key inferior-lisp-mode-map "\C-c\C-k" 'lisp-compile-file)
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85 (define-key inferior-lisp-mode-map "\C-c\C-a" 'lisp-show-arglist)
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86 (define-key inferior-lisp-mode-map "\C-c\C-d" 'lisp-describe-sym)
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87 (define-key inferior-lisp-mode-map "\C-c\C-f"
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88 'lisp-show-function-documentation)
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89 (define-key inferior-lisp-mode-map "\C-c\C-v"
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90 'lisp-show-variable-documentation)))
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91
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92 ;;; These commands augment Lisp mode, so you can process Lisp code in
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93 ;;; the source files.
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94 (define-key lisp-mode-map "\M-\C-x" 'lisp-eval-defun) ; Gnu convention
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95 (define-key lisp-mode-map "\C-x\C-e" 'lisp-eval-last-sexp) ; Gnu convention
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96 (define-key lisp-mode-map "\C-c\C-e" 'lisp-eval-defun)
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97 (define-key lisp-mode-map "\C-c\C-r" 'lisp-eval-region)
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98 (define-key lisp-mode-map "\C-c\C-c" 'lisp-compile-defun)
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99 (define-key lisp-mode-map "\C-c\C-z" 'switch-to-lisp)
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100 (define-key lisp-mode-map "\C-c\C-l" 'lisp-load-file)
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101 (define-key lisp-mode-map "\C-c\C-k" 'lisp-compile-file) ; "kompile" file
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102 (define-key lisp-mode-map "\C-c\C-a" 'lisp-show-arglist)
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103 (define-key lisp-mode-map "\C-c\C-d" 'lisp-describe-sym)
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104 (define-key lisp-mode-map "\C-c\C-f" 'lisp-show-function-documentation)
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105 (define-key lisp-mode-map "\C-c\C-v" 'lisp-show-variable-documentation)
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106
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107 ;;; This function exists for backwards compatibility.
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108 ;;; Previous versions of this package bound commands to C-c <letter>
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109 ;;; bindings, which is not allowed by the gnumacs standard.
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110
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111 ;;; "This function binds many inferior-lisp commands to C-c <letter> bindings,
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112 ;;;where they are more accessible. C-c <letter> bindings are reserved for the
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113 ;;;user, so these bindings are non-standard. If you want them, you should
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114 ;;;have this function called by the inferior-lisp-load-hook:
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115 ;;; (setq inferior-lisp-load-hook '(inferior-lisp-install-letter-bindings))
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116 ;;;You can modify this function to install just the bindings you want."
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117 (defun inferior-lisp-install-letter-bindings ()
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118 (define-key lisp-mode-map "\C-ce" 'lisp-eval-defun-and-go)
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119 (define-key lisp-mode-map "\C-cr" 'lisp-eval-region-and-go)
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120 (define-key lisp-mode-map "\C-cc" 'lisp-compile-defun-and-go)
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121 (define-key lisp-mode-map "\C-cz" 'switch-to-lisp)
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122 (define-key lisp-mode-map "\C-cl" 'lisp-load-file)
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123 (define-key lisp-mode-map "\C-ck" 'lisp-compile-file)
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124 (define-key lisp-mode-map "\C-ca" 'lisp-show-arglist)
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125 (define-key lisp-mode-map "\C-cd" 'lisp-describe-sym)
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126 (define-key lisp-mode-map "\C-cf" 'lisp-show-function-documentation)
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127 (define-key lisp-mode-map "\C-cv" 'lisp-show-variable-documentation)
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128
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129 (define-key inferior-lisp-mode-map "\C-cl" 'lisp-load-file)
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130 (define-key inferior-lisp-mode-map "\C-ck" 'lisp-compile-file)
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131 (define-key inferior-lisp-mode-map "\C-ca" 'lisp-show-arglist)
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132 (define-key inferior-lisp-mode-map "\C-cd" 'lisp-describe-sym)
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133 (define-key inferior-lisp-mode-map "\C-cf" 'lisp-show-function-documentation)
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134 (define-key inferior-lisp-mode-map "\C-cv"
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135 'lisp-show-variable-documentation))
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136
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137
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138 ;;;jwz: ilisp is better, don't ###autoload
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139 (defvar inferior-lisp-program "lisp"
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140 "*Program name for invoking an inferior Lisp with for Inferior Lisp mode.")
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141
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142 ;;;jwz: ilisp is better, don't ###autoload
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143 (defvar inferior-lisp-load-command "(load \"%s\")\n"
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144 "*Format-string for building a Lisp expression to load a file.
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145 This format string should use `%s' to substitute a file name
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146 and should result in a Lisp expression that will command the inferior Lisp
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147 to load that file. The default works acceptably on most Lisps.
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148 The string \"(progn (load \\\"%s\\\" :verbose nil :print t) (values))\\n\"
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149 produces cosmetically superior output for this application,
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150 but it works only in Common Lisp.")
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151
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152 ;;;jwz: ilisp is better, don't ###autoload
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153 (defvar inferior-lisp-prompt "^[^> \n]*>+:? *"
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154 "Regexp to recognise prompts in the Inferior Lisp mode.
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155 Defaults to \"^[^> \\n]*>+:? *\", which works pretty good for Lucid, kcl,
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156 and franz. This variable is used to initialize `comint-prompt-regexp' in the
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157 Inferior Lisp buffer.
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158
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159 More precise choices:
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160 Lucid Common Lisp: \"^\\\\(>\\\\|\\\\(->\\\\)+\\\\) *\"
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161 franz: \"^\\\\(->\\\\|<[0-9]*>:\\\\) *\"
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162 kcl: \"^>+ *\"
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163
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164 This is a fine thing to set in your .emacs file.")
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165
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166 (defvar inferior-lisp-buffer nil "*The current inferior-lisp process buffer.
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167
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168 MULTIPLE PROCESS SUPPORT
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169 ===========================================================================
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170 To run multiple Lisp processes, you start the first up
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171 with \\[inferior-lisp]. It will be in a buffer named `*inferior-lisp*'.
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172 Rename this buffer with \\[rename-buffer]. You may now start up a new
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173 process with another \\[inferior-lisp]. It will be in a new buffer,
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174 named `*inferior-lisp*'. You can switch between the different process
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175 buffers with \\[switch-to-buffer].
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176
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177 Commands that send text from source buffers to Lisp processes --
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178 like `lisp-eval-defun' or `lisp-show-arglist' -- have to choose a process
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179 to send to, when you have more than one Lisp process around. This
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180 is determined by the global variable `inferior-lisp-buffer'. Suppose you
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181 have three inferior Lisps running:
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182 Buffer Process
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183 foo inferior-lisp
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184 bar inferior-lisp<2>
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185 *inferior-lisp* inferior-lisp<3>
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186 If you do a \\[lisp-eval-defun] command on some Lisp source code,
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187 what process do you send it to?
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188
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189 - If you're in a process buffer (foo, bar, or *inferior-lisp*),
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190 you send it to that process.
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191 - If you're in some other buffer (e.g., a source file), you
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192 send it to the process attached to buffer `inferior-lisp-buffer'.
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193 This process selection is performed by function `inferior-lisp-proc'.
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194
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195 Whenever \\[inferior-lisp] fires up a new process, it resets
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196 `inferior-lisp-buffer' to be the new process's buffer. If you only run
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197 one process, this does the right thing. If you run multiple
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198 processes, you can change `inferior-lisp-buffer' to another process
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199 buffer with \\[set-variable].")
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200
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201 ;;;jwz: ilisp is better, don't ###autoload
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202 (defvar inferior-lisp-mode-hook '()
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203 "*Hook for customizing Inferior Lisp mode.")
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204
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205 (defun inferior-lisp-mode ()
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206 "Major mode for interacting with an inferior Lisp process.
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207 Runs a Lisp interpreter as a subprocess of Emacs, with Lisp I/O through an
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208 Emacs buffer. Variable `inferior-lisp-program' controls which Lisp interpreter
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209 is run. Variables `inferior-lisp-prompt', `inferior-lisp-filter-regexp' and
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210 `inferior-lisp-load-command' can customize this mode for different Lisp
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211 interpreters.
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212
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213 For information on running multiple processes in multiple buffers, see
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214 documentation for variable `inferior-lisp-buffer'.
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215
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216 \\{inferior-lisp-mode-map}
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217
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218 Customization: Entry to this mode runs the hooks on `comint-mode-hook' and
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219 `inferior-lisp-mode-hook' (in that order).
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220
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221 You can send text to the inferior Lisp process from other buffers containing
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222 Lisp source.
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223 switch-to-lisp switches the current buffer to the Lisp process buffer.
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224 lisp-eval-defun sends the current defun to the Lisp process.
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225 lisp-compile-defun compiles the current defun.
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226 lisp-eval-region sends the current region to the Lisp process.
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227 lisp-compile-region compiles the current region.
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228
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229 Prefixing the lisp-eval/compile-defun/region commands with
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230 a \\[universal-argument] causes a switch to the Lisp process buffer after sending
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231 the text.
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232
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233 Commands:
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234 Return after the end of the process' output sends the text from the
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235 end of process to point.
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236 Return before the end of the process' output copies the sexp ending at point
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237 to the end of the process' output, and sends it.
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238 Delete converts tabs to spaces as it moves back.
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239 Tab indents for Lisp; with argument, shifts rest
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240 of expression rigidly with the current line.
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241 C-M-q does Tab on each line starting within following expression.
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242 Paragraphs are separated only by blank lines. Semicolons start comments.
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243 If you accidentally suspend your process, use \\[comint-continue-subjob]
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244 to continue it."
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245 (interactive)
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246 (comint-mode)
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247 (setq comint-prompt-regexp inferior-lisp-prompt)
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248 (setq major-mode 'inferior-lisp-mode)
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249 (setq mode-name "Inferior Lisp")
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250 (setq mode-line-process '(":%s"))
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251 (lisp-mode-variables t)
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252 (use-local-map inferior-lisp-mode-map) ;c-c c-k for "kompile" file
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253 (setq comint-get-old-input (function lisp-get-old-input))
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254 (setq comint-input-filter (function lisp-input-filter))
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255 (setq comint-input-sentinel 'ignore)
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256 (run-hooks 'inferior-lisp-mode-hook))
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257
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258 (defun lisp-get-old-input ()
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259 "Return a string containing the sexp ending at point."
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260 (save-excursion
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261 (let ((end (point)))
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262 (backward-sexp)
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263 (buffer-substring (point) end))))
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264
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265 (defun lisp-input-filter (str)
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266 "t if STR does not match `inferior-lisp-filter-regexp'."
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267 (not (string-match inferior-lisp-filter-regexp str)))
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268
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269 ;;;jwz: ilisp is better, don't ###autoload
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270 (defun inferior-lisp (cmd)
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271 "Run an inferior Lisp process, input and output via buffer `*inferior-lisp*'.
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272 If there is a process already running in `*inferior-lisp*', just switch
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273 to that buffer.
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274 With argument, allows you to edit the command line (default is value
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275 of `inferior-lisp-program'). Runs the hooks from
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276 `inferior-lisp-mode-hook' (after the `comint-mode-hook' is run).
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277 \(Type \\[describe-mode] in the process buffer for a list of commands.)"
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278 (interactive (list (if current-prefix-arg
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279 (read-string "Run lisp: " inferior-lisp-program)
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280 inferior-lisp-program)))
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281 (if (not (comint-check-proc "*inferior-lisp*"))
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282 (let ((cmdlist (inferior-lisp-args-to-list cmd)))
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283 (set-buffer (apply (function make-comint)
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284 "inferior-lisp" (car cmdlist) nil (cdr cmdlist)))
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285 (inferior-lisp-mode)))
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286 (setq inferior-lisp-buffer "*inferior-lisp*")
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287 (pop-to-buffer "*inferior-lisp*"))
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288 ;;;###autoload (add-hook 'same-window-buffer-names "*inferior-lisp*")
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289
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290 ;;;jwz: ilisp is better, don't ###autoload
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291 (define-function 'run-lisp 'inferior-lisp)
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292
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293 ;;; Break a string up into a list of arguments.
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294 ;;; This will break if you have an argument with whitespace, as in
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295 ;;; string = "-ab +c -x 'you lose'".
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296 (defun inferior-lisp-args-to-list (string)
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297 (let ((where (string-match "[ \t]" string)))
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298 (cond ((null where) (list string))
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299 ((not (= where 0))
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300 (cons (substring string 0 where)
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301 (inferior-lisp-args-to-list (substring string (+ 1 where)
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302 (length string)))))
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303 (t (let ((pos (string-match "[^ \t]" string)))
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304 (if (null pos)
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305 nil
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306 (inferior-lisp-args-to-list (substring string pos
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307 (length string)))))))))
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308
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309 (defun lisp-eval-region (start end &optional and-go)
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310 "Send the current region to the inferior Lisp process.
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311 Prefix argument means switch to the Lisp buffer afterwards."
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312 (interactive "r\nP")
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313 (comint-send-region (inferior-lisp-proc) start end)
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314 (comint-send-string (inferior-lisp-proc) "\n")
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315 (if and-go (switch-to-lisp t)))
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316
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317 (defun lisp-eval-defun (&optional and-go)
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318 "Send the current defun to the inferior Lisp process.
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319 Prefix argument means switch to the Lisp buffer afterwards."
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320 (interactive "P")
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321 (save-excursion
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322 (end-of-defun)
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323 (skip-chars-backward " \t\n\r\f") ; Makes allegro happy
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324 (let ((end (point)))
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325 (beginning-of-defun)
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326 (lisp-eval-region (point) end)))
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327 (if and-go (switch-to-lisp t)))
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328
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329 (defun lisp-eval-last-sexp (&optional and-go)
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330 "Send the previous sexp to the inferior Lisp process.
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331 Prefix argument means switch to the Lisp buffer afterwards."
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332 (interactive "P")
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333 (lisp-eval-region (save-excursion (backward-sexp) (point)) (point) and-go))
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334
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335 ;;; Common Lisp COMPILE sux.
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336 (defun lisp-compile-region (start end &optional and-go)
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337 "Compile the current region in the inferior Lisp process.
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338 Prefix argument means switch to the Lisp buffer afterwards."
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339 (interactive "r\nP")
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340 (comint-send-string
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341 (inferior-lisp-proc)
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342 (format "(funcall (compile nil `(lambda () (progn 'compile %s))))\n"
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343 (buffer-substring start end)))
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344 (if and-go (switch-to-lisp t)))
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345
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346 (defun lisp-compile-defun (&optional and-go)
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347 "Compile the current defun in the inferior Lisp process.
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348 Prefix argument means switch to the Lisp buffer afterwards."
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349 (interactive "P")
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350 (save-excursion
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351 (end-of-defun)
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352 (skip-chars-backward " \t\n\r\f") ; Makes allegro happy
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353 (let ((e (point)))
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354 (beginning-of-defun)
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355 (lisp-compile-region (point) e)))
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356 (if and-go (switch-to-lisp t)))
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357
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358 (defun switch-to-lisp (eob-p)
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359 "Switch to the inferior Lisp process buffer.
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360 With argument, positions cursor at end of buffer."
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361 (interactive "P")
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362 (if (get-buffer inferior-lisp-buffer)
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363 (pop-to-buffer inferior-lisp-buffer)
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364 (error "No current inferior Lisp buffer"))
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365 (cond (eob-p
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366 (push-mark)
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367 (goto-char (point-max)))))
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368
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369
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370 ;;; Now that lisp-compile/eval-defun/region takes an optional prefix arg,
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371 ;;; these commands are redundant. But they are kept around for the user
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372 ;;; to bind if he wishes, for backwards functionality, and because it's
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373 ;;; easier to type C-c e than C-u C-c C-e.
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374
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375 (defun lisp-eval-region-and-go (start end)
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376 "Send the current region to the inferior Lisp, and switch to its buffer."
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377 (interactive "r")
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378 (lisp-eval-region start end t))
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379
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380 (defun lisp-eval-defun-and-go ()
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381 "Send the current defun to the inferior Lisp, and switch to its buffer."
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382 (interactive)
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383 (lisp-eval-defun t))
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384
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385 (defun lisp-compile-region-and-go (start end)
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386 "Compile the current region in the inferior Lisp, and switch to its buffer."
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387 (interactive "r")
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388 (lisp-compile-region start end t))
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389
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390 (defun lisp-compile-defun-and-go ()
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391 "Compile the current defun in the inferior Lisp, and switch to its buffer."
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392 (interactive)
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393 (lisp-compile-defun t))
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394
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395 ;;; A version of the form in H. Shevis' soar-mode.el package. Less robust.
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396 ;;; (defun lisp-compile-sexp (start end)
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397 ;;; "Compile the s-expression bounded by START and END in the inferior lisp.
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398 ;;; If the sexp isn't a DEFUN form, it is evaluated instead."
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399 ;;; (cond ((looking-at "(defun\\s +")
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400 ;;; (goto-char (match-end 0))
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401 ;;; (let ((name-start (point)))
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402 ;;; (forward-sexp 1)
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403 ;;; (process-send-string "inferior-lisp"
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404 ;;; (format "(compile '%s #'(lambda "
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405 ;;; (buffer-substring name-start
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406 ;;; (point)))))
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407 ;;; (let ((body-start (point)))
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408 ;;; (goto-char start) (forward-sexp 1) ; Can't use end-of-defun.
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409 ;;; (process-send-region "inferior-lisp"
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410 ;;; (buffer-substring body-start (point))))
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411 ;;; (process-send-string "inferior-lisp" ")\n"))
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412 ;;; (t (lisp-eval-region start end)))))
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413 ;;;
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414 ;;; (defun lisp-compile-region (start end)
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415 ;;; "Each s-expression in the current region is compiled (if a DEFUN)
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416 ;;; or evaluated (if not) in the inferior lisp."
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417 ;;; (interactive "r")
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418 ;;; (save-excursion
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419 ;;; (goto-char start) (end-of-defun) (beginning-of-defun) ; error check
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420 ;;; (if (< (point) start) (error "region begins in middle of defun"))
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421 ;;; (goto-char start)
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422 ;;; (let ((s start))
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423 ;;; (end-of-defun)
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424 ;;; (while (<= (point) end) ; Zip through
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425 ;;; (lisp-compile-sexp s (point)) ; compiling up defun-sized chunks.
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426 ;;; (setq s (point))
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427 ;;; (end-of-defun))
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428 ;;; (if (< s end) (lisp-compile-sexp s end)))))
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429 ;;;
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430 ;;; End of HS-style code
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431
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432
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433 (defvar lisp-prev-l/c-dir/file nil
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434 "Record last directory and file used in loading or compiling.
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435 This holds a cons cell of the form `(DIRECTORY . FILE)'
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436 describing the last `lisp-load-file' or `lisp-compile-file' command.")
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437
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438 (defvar lisp-source-modes '(lisp-mode)
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439 "*Used to determine if a buffer contains Lisp source code.
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440 If it's loaded into a buffer that is in one of these major modes, it's
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441 considered a Lisp source file by `lisp-load-file' and `lisp-compile-file'.
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442 Used by these commands to determine defaults.")
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443
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444 (defun lisp-load-file (file-name)
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445 "Load a Lisp file into the inferior Lisp process."
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446 (interactive (comint-get-source "Load Lisp file: " lisp-prev-l/c-dir/file
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447 lisp-source-modes nil)) ; NIL because LOAD
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448 ; doesn't need an exact name
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449 (comint-check-source file-name) ; Check to see if buffer needs saved.
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450 (setq lisp-prev-l/c-dir/file (cons (file-name-directory file-name)
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451 (file-name-nondirectory file-name)))
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452 (comint-send-string (inferior-lisp-proc)
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453 (format inferior-lisp-load-command file-name))
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454 (switch-to-lisp t))
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455
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456 (defun lisp-compile-file (file-name)
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457 "Compile a Lisp file in the inferior Lisp process."
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458 (interactive (comint-get-source "Compile Lisp file: " lisp-prev-l/c-dir/file
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459 lisp-source-modes nil)) ; NIL = don't need
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460 ; suffix .lisp
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461 (comint-check-source file-name) ; Check to see if buffer needs saved.
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462 (setq lisp-prev-l/c-dir/file (cons (file-name-directory file-name)
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463 (file-name-nondirectory file-name)))
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464 (comint-send-string (inferior-lisp-proc) (concat "(compile-file \""
|
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465 file-name
|
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466 "\"\)\n"))
|
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467 (switch-to-lisp t))
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468
|
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469
|
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470
|
|
471 ;;; Documentation functions: function doc, var doc, arglist, and
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472 ;;; describe symbol.
|
|
473 ;;; ===========================================================================
|
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474
|
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475 ;;; Command strings
|
|
476 ;;; ===============
|
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477
|
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478 (defvar lisp-function-doc-command
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479 "(let ((fn '%s))
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480 (format t \"Documentation for ~a:~&~a\"
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481 fn (documentation fn 'function))
|
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482 (values))\n"
|
|
483 "Command to query inferior Lisp for a function's documentation.")
|
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484
|
|
485 (defvar lisp-var-doc-command
|
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486 "(let ((v '%s))
|
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487 (format t \"Documentation for ~a:~&~a\"
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488 v (documentation v 'variable))
|
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489 (values))\n"
|
|
490 "Command to query inferior Lisp for a variable's documentation.")
|
|
491
|
|
492 (defvar lisp-arglist-command
|
|
493 "(let ((fn '%s))
|
|
494 (format t \"Arglist for ~a: ~a\" fn (arglist fn))
|
|
495 (values))\n"
|
|
496 "Command to query inferior Lisp for a function's arglist.")
|
|
497
|
|
498 (defvar lisp-describe-sym-command
|
|
499 "(describe '%s)\n"
|
|
500 "Command to query inferior Lisp for a variable's documentation.")
|
|
501
|
|
502
|
|
503 ;;; Ancillary functions
|
|
504 ;;; ===================
|
|
505
|
|
506 ;;; Reads a string from the user.
|
|
507 (defun lisp-symprompt (prompt default)
|
|
508 (list (let* ((prompt (if default
|
|
509 (format "%s (default %s): " prompt default)
|
|
510 (concat prompt ": ")))
|
|
511 (ans (read-string prompt)))
|
|
512 (if (zerop (length ans)) default ans))))
|
|
513
|
|
514
|
|
515 ;;; Adapted from function-called-at-point in help.el.
|
|
516 (defun lisp-fn-called-at-pt ()
|
|
517 "Returns the name of the function called in the current call.
|
|
518 The value is nil if it can't find one."
|
|
519 (condition-case nil
|
|
520 (save-excursion
|
|
521 (save-restriction
|
|
522 (narrow-to-region (max (point-min) (- (point) 1000)) (point-max))
|
|
523 (backward-up-list 1)
|
|
524 (forward-char 1)
|
|
525 (let ((obj (read (current-buffer))))
|
|
526 (and (symbolp obj) obj))))
|
|
527 (error nil)))
|
|
528
|
|
529
|
|
530 ;;; Adapted from variable-at-point in help.el.
|
|
531 (defun lisp-var-at-pt ()
|
|
532 (condition-case ()
|
|
533 (save-excursion
|
|
534 (forward-sexp -1)
|
|
535 (skip-chars-forward "'")
|
|
536 (let ((obj (read (current-buffer))))
|
|
537 (and (symbolp obj) obj)))
|
|
538 (error nil)))
|
|
539
|
|
540
|
|
541 ;;; Documentation functions: fn and var doc, arglist, and symbol describe.
|
|
542 ;;; ======================================================================
|
|
543
|
|
544 (defun lisp-show-function-documentation (fn)
|
|
545 "Send a command to the inferior Lisp to give documentation for function FN.
|
|
546 See variable `lisp-function-doc-command'."
|
|
547 (interactive (lisp-symprompt "Function doc" (lisp-fn-called-at-pt)))
|
|
548 (comint-proc-query (inferior-lisp-proc)
|
|
549 (format lisp-function-doc-command fn)))
|
|
550
|
|
551 (defun lisp-show-variable-documentation (var)
|
|
552 "Send a command to the inferior Lisp to give documentation for function FN.
|
|
553 See variable `lisp-var-doc-command'."
|
|
554 (interactive (lisp-symprompt "Variable doc" (lisp-var-at-pt)))
|
|
555 (comint-proc-query (inferior-lisp-proc) (format lisp-var-doc-command var)))
|
|
556
|
|
557 (defun lisp-show-arglist (fn)
|
|
558 "Send a query to the inferior Lisp for the arglist for function FN.
|
|
559 See variable `lisp-arglist-command'."
|
|
560 (interactive (lisp-symprompt "Arglist" (lisp-fn-called-at-pt)))
|
|
561 (comint-proc-query (inferior-lisp-proc) (format lisp-arglist-command fn)))
|
|
562
|
|
563 (defun lisp-describe-sym (sym)
|
|
564 "Send a command to the inferior Lisp to describe symbol SYM.
|
|
565 See variable `lisp-describe-sym-command'."
|
|
566 (interactive (lisp-symprompt "Describe" (lisp-var-at-pt)))
|
|
567 (comint-proc-query (inferior-lisp-proc)
|
|
568 (format lisp-describe-sym-command sym)))
|
|
569
|
|
570
|
|
571 ;; "Returns the current inferior Lisp process.
|
|
572 ;; See variable `inferior-lisp-buffer'."
|
|
573 (defun inferior-lisp-proc ()
|
|
574 (let ((proc (get-buffer-process (if (eq major-mode 'inferior-lisp-mode)
|
|
575 (current-buffer)
|
|
576 inferior-lisp-buffer))))
|
|
577 (or proc
|
|
578 (error "No Lisp subprocess; see variable `inferior-lisp-buffer'"))))
|
|
579
|
|
580
|
|
581 ;;; Do the user's customization...
|
|
582 ;;;===============================
|
|
583 (defvar inferior-lisp-load-hook nil
|
|
584 "This hook is run when the library `inf-lisp' is loaded.
|
|
585 This is a good place to put keybindings.")
|
|
586
|
|
587 (run-hooks 'inferior-lisp-load-hook)
|
|
588
|
|
589 ;;; CHANGE LOG
|
|
590 ;;; ===========================================================================
|
|
591 ;;; 7/21/92 Jim Blandy
|
|
592 ;;; - Changed all uses of the cmulisp name or prefix to inferior-lisp;
|
|
593 ;;; this is now the official inferior lisp package. Use the global
|
|
594 ;;; ChangeLog from now on.
|
|
595 ;;; 5/24/90 Olin
|
|
596 ;;; - Split cmulisp and cmushell modes into separate files.
|
|
597 ;;; Not only is this a good idea, it's apparently the way it'll be rel 19.
|
|
598 ;;; - Upgraded process sends to use comint-send-string instead of
|
|
599 ;;; process-send-string.
|
|
600 ;;; - Explicit references to process "cmulisp" have been replaced with
|
|
601 ;;; (cmulisp-proc). This allows better handling of multiple process bufs.
|
|
602 ;;; - Added process query and var/function/symbol documentation
|
|
603 ;;; commands. Based on code written by Douglas Roberts.
|
|
604 ;;; - Added lisp-eval-last-sexp, bound to C-x C-e.
|
|
605 ;;;
|
|
606 ;;; 9/20/90 Olin
|
|
607 ;;; Added a save-restriction to lisp-fn-called-at-pt. This bug and fix
|
|
608 ;;; reported by Lennart Staflin.
|
|
609 ;;;
|
|
610 ;;; 3/12/90 Olin
|
|
611 ;;; - lisp-load-file and lisp-compile-file no longer switch-to-lisp.
|
|
612 ;;; Tale suggested this.
|
|
613 ;;; - Reversed this decision 7/15/91. You need the visual feedback.
|
|
614 ;;;
|
|
615 ;;; 7/25/91 Olin
|
|
616 ;;; Changed all keybindings of the form C-c <letter>. These are
|
|
617 ;;; supposed to be reserved for the user to bind. This affected
|
|
618 ;;; mainly the compile/eval-defun/region[-and-go] commands.
|
|
619 ;;; This was painful, but necessary to adhere to the gnumacs standard.
|
|
620 ;;; For some backwards compatibility, see the
|
|
621 ;;; cmulisp-install-letter-bindings
|
|
622 ;;; function.
|
|
623 ;;;
|
|
624 ;;; 8/2/91 Olin
|
|
625 ;;; - The lisp-compile/eval-defun/region commands now take a prefix arg,
|
|
626 ;;; which means switch-to-lisp after sending the text to the Lisp process.
|
|
627 ;;; This obsoletes all the -and-go commands. The -and-go commands are
|
|
628 ;;; kept around for historical reasons, and because the user can bind
|
|
629 ;;; them to key sequences shorter than C-u C-c C-<letter>.
|
|
630 ;;; - If M-x cmulisp is invoked with a prefix arg, it allows you to
|
|
631 ;;; edit the command line.
|
|
632
|
|
633 (provide 'inf-lisp)
|
|
634
|
|
635 ;;; inf-lisp.el ends here
|