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1 ;;; -*- Mode: Emacs-Lisp -*-
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2
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3 ;;; ilisp-snd.el --
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4
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5 ;;; This file is part of ILISP.
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6 ;;; Version: 5.7
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7 ;;;
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8 ;;; Copyright (C) 1990, 1991, 1992, 1993 Chris McConnell
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9 ;;; 1993, 1994 Ivan Vasquez
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10 ;;; 1994, 1995 Marco Antoniotti and Rick Busdiecker
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11 ;;;
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12 ;;; Other authors' names for which this Copyright notice also holds
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13 ;;; may appear later in this file.
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14 ;;;
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15 ;;; Send mail to 'ilisp-request@lehman.com' to be included in the
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16 ;;; ILISP mailing list. 'ilisp@lehman.com' is the general ILISP
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17 ;;; mailing list were bugs and improvements are discussed.
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18 ;;;
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19 ;;; ILISP is freely redistributable under the terms found in the file
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20 ;;; COPYING.
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21
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22
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23
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24 ;;;
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25 ;;; ILISP send and support.
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26 ;;;
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27
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28
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29 ;;;%% Package / Symbol support
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30 ;;;
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31 (defun lisp-buffer-package ()
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32 "Return the package for this buffer. The package name is a string.
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33 If there is none, return NIL. This caches the package unless
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34 ilisp-dont-cache-package is non-nil, so calling this more than once
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35 is cheap."
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36 (cond ((and (not (eq buffer-package 'not-yet-computed))
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37 (null lisp-dont-cache-package))
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38 buffer-package)
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39 (ilisp-completion-package ilisp-completion-package)
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40 (lisp-dont-cache-package
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41 ;; Refind the package each time.
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42 (let ((package (lisp-buffer-package-internal nil)))
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43 (message "")
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44 (setq buffer-package 'not-yet-computed)
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45 (if package
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46 (setq mode-name
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47 (concat
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48 (or buffer-mode-name
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49 (setq buffer-mode-name mode-name))
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50 ":" package)))
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51 package))
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52 ((or lisp-buffer-package
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53 (memq major-mode ilisp-modes)
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54 (not (memq major-mode lisp-source-modes)))
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55 nil)
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56 (t
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57 (make-local-variable 'buffer-package)
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58 (make-local-variable 'buffer-mode-name)
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59 (let ((package (lisp-buffer-package-internal t)))
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60 (message "")
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61 (setq buffer-package package)
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62 ;; Display package in mode line
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63 (if package
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64 (setq mode-name
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65 (concat (or buffer-mode-name
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66 (setq buffer-mode-name mode-name))
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67 ":" buffer-package)))
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68 buffer-package))))
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69
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70 (defun lisp-buffer-package-internal (search-from-start)
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71 "Returns the package of the buffer. If SEARCH-FROM-START is T then
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72 will search from the beginning of the buffer, otherwise will search
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73 backwards from current point."
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74 (setq mode-line-process 'ilisp-status)
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75 (let* ((lisp-buffer-package t)
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76 (case-fold-search t)
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77 (regexp (ilisp-value 'ilisp-package-regexp t))
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78 (spec
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79 (if regexp
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80 (save-excursion
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81 (if (or (and search-from-start
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82 (goto-char (point-min))
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83 (re-search-forward regexp nil t))
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84 (re-search-backward regexp nil t))
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85 (buffer-substring (match-beginning 0)
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86 (progn
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87 (goto-char (match-beginning 0))
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88 (forward-sexp)
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89 (point)))))))
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90 (str (format (ilisp-value 'ilisp-package-command) spec))
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91 (package
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92 (if spec
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93 (ilisp-send
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94 str
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95 "Finding buffer package"
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96 'pkg))))
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97 (if (ilisp-value 'comint-errorp t)
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98 (progn
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99 (lisp-display-output package)
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100 (error "No package"))
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101 (if (and package
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102 ;; There was a bug here, used to have the second *
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103 ;; outside of the parens.
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104 (string-match "[ \n\t:\"]*\\([^ \n\t\"]*\\)" package))
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105 (setq package
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106 (substring package
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107 (match-beginning 1) (match-end 1)))))
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108 package))
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109
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110 ;;;
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111 (defun package-lisp ()
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112 "Show current inferior LISP package."
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113 (interactive)
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114 (message "Inferior LISP package is %s"
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115 (ilisp-send (ilisp-value 'ilisp-package-name-command)
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116 "Finding inferior LISP package" 'pkg)))
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117
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118 ;;;
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119 (defun set-package-lisp (package)
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120 "Set inferior LISP to package of buffer or a named package with prefix."
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121 (interactive
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122 (let ((default (lisp-buffer-package)))
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123 (if (or current-prefix-arg (null default))
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124 (let ((name
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125 (read-string
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126 (format "Package [%s]: " (lisp-buffer-package)) "")))
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127 (list (if (equal name "") default name)))
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128 (list default))))
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129 (if package
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130 (ilisp-send (format (ilisp-value 'ilisp-in-package-command) package)
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131 (format "Set %s's package to %s"
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132 (buffer-name (ilisp-buffer))
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133 package)
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134 'pkg 'dispatch)
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135 (error "No package")))
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136
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137 ;;;
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138 (defun set-buffer-package-lisp (package)
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139 "Reset the current package of the current buffer. With prefix
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140 specify manually."
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141 (interactive (if current-prefix-arg
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142 (list (read-from-minibuffer "Package: " ))
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143 (list nil)))
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144 (if package
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145 (setq buffer-package package
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146 mode-name (concat (or buffer-mode-name mode-name) ":" package))
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147 (setq buffer-package 'not-yet-computed)
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148 (lisp-buffer-package)))
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149
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150
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151
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152 ;;;%Interface functions
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153 ;;;%%Symbols
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154 (defun lisp-string-to-symbol (string)
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155 "Convert STRING to a symbol, (package delimiter symbol) where the
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156 package is either package:symbol or from the current buffer."
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157 (let* ((start (string-match ":+" string))
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158 (end (if start (match-end 0))))
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159 (if start
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160 (lisp-symbol
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161 (if (= start 0)
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162 ""
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163 (substring string 0 start))
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164 (substring string start end)
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165 (substring string end))
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166 (let ((package (lisp-buffer-package)))
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167 (lisp-symbol package (if package "::") string)))))
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168
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169 ;;;
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170 (defun lisp-symbol-to-string (symbol)
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171 "Convert SYMBOL to a string."
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172 (apply 'concat symbol))
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173
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174 ;;;
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175 (defun lisp-buffer-symbol (symbol)
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176 "Return SYMBOL as a string qualified for the current buffer."
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177 (let ((symbol-name (lisp-symbol-name symbol))
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178 (pkg (lisp-symbol-package symbol))
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179 (delimiter (lisp-symbol-delimiter symbol)))
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180 (cond ((string= pkg (lisp-buffer-package)) symbol-name)
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181 ((string= pkg "") (concat ":" symbol-name))
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182 (pkg (concat pkg delimiter symbol-name))
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183 (t symbol-name))))
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184
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185 ;;;
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186 (defun lisp-previous-symbol (&optional stay)
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187 "Return the immediately preceding symbol as ((package delimiter symbol)
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188 function-p start end). If STAY is T, the end of the symbol will be point."
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189 (save-excursion
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190 (if (or (and (memq major-mode ilisp-modes)
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191 (= (point) (process-mark (get-buffer-process
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192 (current-buffer)))))
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193 (progn
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194 (skip-chars-backward " \t\n")
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195 (or (bobp) (memq (char-after (1- (point))) '(?\) ?\")))))
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196 nil
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197 (let* ((delimiters (ilisp-value 'ilisp-symbol-delimiters))
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198 (end (progn
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199 (if (not stay) (skip-chars-forward delimiters))
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200 (point)))
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201 (start (progn
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202 (skip-chars-backward delimiters)
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203 (point)))
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204 (prefix (if (not (bobp)) (1- start)))
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205 (function-p
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206 (and prefix
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207 (or (eq (char-after prefix) ?\()
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208 (and (eq (char-after prefix) ?')
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209 (not (bobp))
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210 (eq (char-after (1- prefix)) ?#)))
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211 (not (looking-at "[^: \t\n]*:*\\*[^ \t\n]")))))
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212 (cons (lisp-string-to-symbol (buffer-substring start end))
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213 (list function-p start end))))))
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214
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215
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216 ;;;
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217 (defun lisp-function-name ()
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218 "Return the previous function symbol. This is either after a #' or
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219 at the start of the current sexp. If there is no current sexp, return
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220 nil."
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221 (save-excursion
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222 (let ((symbol (lisp-previous-symbol)))
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223 (if (car (cdr symbol))
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224 (car symbol)
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225 (condition-case ()
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226 (if (and (memq major-mode ilisp-modes)
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227 (= (point)
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228 (process-mark
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229 (get-buffer-process (current-buffer)))))
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230 nil
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231 (backward-up-list 1)
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232 (down-list 1)
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233 (lisp-string-to-symbol
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234 (buffer-substring (point)
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235 (progn (forward-sexp 1) (point)))))
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236 (error nil))))))
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237
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238
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239 ;;;
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240 (defun lisp-defun-name ()
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241 "Return the name of the current defun."
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242 (save-excursion
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243 (lisp-defun-begin)
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244 (lisp-string-to-symbol (lisp-def-name t))))
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245
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246
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247 ;;;%% ILISP initializations
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248 ;;;
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249 (defun ilisp-initialized ()
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250 "Return T if the current inferior LISP has been initialized."
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251 (memq (buffer-name (ilisp-buffer)) ilisp-initialized))
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252
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253 ;;;
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254 (defun ilisp-load-init (dialect file)
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255 "Add FILE to the files to be loaded into the inferior LISP when
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256 dialect is initialized. If FILE is NIL, the entry will be removed."
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257 (let ((old (assoc dialect ilisp-load-inits)))
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258 (if file
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259 (if old
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260 (rplacd old file)
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261 (setq ilisp-load-inits (nconc ilisp-load-inits
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262 (list (cons dialect file)))))
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263 (if old (setq ilisp-load-inits (delq old ilisp-load-inits))))))
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264
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265 ;;;
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266 (defun ilisp-binary (init var)
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267 "Initialize VAR to the result of INIT if VAR is NIL."
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268 (if (not (ilisp-value var t))
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269 (let ((binary (ilisp-value init t)))
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270 (if binary
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271 (comint-send
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272 (ilisp-process) binary
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273 t nil 'binary nil
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274 (` (lambda (error wait message output last)
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275 (if (or error
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276 (not (string-match "\"[^\"]*\"" output)))
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277 (progn
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278 (lisp-display-output output)
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279 (abort-commands-lisp "No binary"))
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280 (setq (, var)
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281 (substring output
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282 (1+ (match-beginning 0))
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283 (1- (match-end 0))))))))))))
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284
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285 ;;;
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286 (defun ilisp-done-init ()
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287 "Make sure that initialization is done and if not dispatch another check."
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288 (if ilisp-load-files
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289 (comint-send-code (get-buffer-process (current-buffer))
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290 'ilisp-done-init)
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291 (if ilisp-initializing
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292 (progn
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293 (message "Finished initializing %s" (car ilisp-dialect))
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294 (setq ilisp-initializing nil
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295 ilisp-initialized
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296 (cons (buffer-name (current-buffer)) ilisp-initialized))))))
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297
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298 ;;;
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299 (defun ilisp-init-internal (&optional sync)
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300 "Send all of the stuff necessary to initialize."
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301 (unwind-protect
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302 (progn
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303 (if sync
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304 (comint-sync
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305 (ilisp-process)
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306 "\"Start sync\"" "[ \t\n]*\"Start sync\""
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307 "\"End sync\"" "\"End sync\""))
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308 (ilisp-binary 'ilisp-binary-command 'ilisp-binary-extension)
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309 (ilisp-binary 'ilisp-init-binary-command
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310 'ilisp-init-binary-extension)
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311 ;; This gets executed in the process buffer
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312 (comint-send-code
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313 (ilisp-process)
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314 (function (lambda ()
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315 (let ((files ilisp-load-inits)
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316 (done nil))
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317 (unwind-protect
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318 (progn
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319 (if (not ilisp-init-binary-extension)
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320 (setq ilisp-init-binary-extension
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321 ilisp-binary-extension))
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322 (while files
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323 (ilisp-load-or-send
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324 (expand-file-name
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325 (cdr (car files)) ilisp-directory))
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326 (setq files (cdr files)))
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327 (comint-send-code (ilisp-process)
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328 'ilisp-done-init)
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329 (setq done t))
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330 (if (not done)
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331 (progn
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332 (setq ilisp-initializing nil)
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333 (abort-commands-lisp))))))))
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334
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335 (set-ilisp-value 'ilisp-initializing t)) ; progn
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336
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337 (if (not (ilisp-value 'ilisp-initializing t))
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338 (abort-commands-lisp))))
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339
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340 ;;;
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341 (defun ilisp-init (&optional waitp forcep sync)
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342 "Initialize the current inferior LISP if necessary by loading the
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343 files in ilisp-load-inits. Optional WAITP waits for initialization to
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344 finish. When called interactively, force reinitialization. With a
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345 prefix, get the binary extensions again."
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346 (interactive
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347 (list (if current-prefix-arg
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348 (progn
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349 (set-ilisp-value 'ilisp-init-binary-extension nil)
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350 (set-ilisp-value 'ilisp-binary-extension nil)
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351 nil))
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352 t))
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353 (if (or forcep (not (ilisp-initialized)))
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354 (progn
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355 (message "Started initializing ILISP")
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356 (if (not ilisp-directory)
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357 (setq ilisp-directory (or (ilisp-directory "ilisp.elc" load-path)
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358 (ilisp-directory "ilisp.el" load-path))))
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359 (if (not (ilisp-value 'ilisp-initializing t))
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360 (ilisp-init-internal sync))
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361 (if waitp
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362 (while (ilisp-value 'ilisp-initializing t)
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363 (accept-process-output)
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364 (sit-for 0))))))
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365
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366 ;;;
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367 (defun ilisp-init-and-sync ()
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368 "Synchronize with the inferior LISP and then initialize."
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369 (ilisp-init nil nil t))
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370
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371
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372
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373 ;;;
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374 (defun call-defun-lisp (arg)
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375 "Put a call of the current defun in the inferior LISP and go there.
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376 If it is a \(def* name form, look up reasonable forms of name in the
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377 input history unless called with prefix ARG. If not found, use \(name
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378 or *name* as the call. If is not a def* form, put the whole form in
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379 the buffer."
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380 (interactive "P")
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381 (if (save-excursion (lisp-defun-begin) (looking-at "(def"))
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382 (let* ((symbol (lisp-defun-name))
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383 (name (lisp-symbol-name symbol))
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384 (package (if (lisp-symbol-package symbol)
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385 (concat "\\("
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386 (lisp-symbol-package symbol) ":+\\)?")))
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387 (variablep (string-match "^\\*" name))
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388 (setfp (string-match "(setf \\([^\)]+\\)" name)))
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389 (switch-to-lisp t t)
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390 (cond (setfp
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391 (setq name
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392 (substring name (match-beginning 1) (match-end 1)))
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393 (lisp-match-ring (if (not arg)
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394 (concat "(setf[ \t\n]*("
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395 package name "[ \t\n]"))
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396 (concat "(setf (" name)))
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397 (variablep (lisp-match-ring (if (not arg)
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398 (concat package name))
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399 name))
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400 (t
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401 (let ((fun (concat "(" name)))
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402 (setq name (regexp-quote name))
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403 (or (lisp-match-ring
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404 (if (not arg) (concat "(" package name "[ \t\n\)]"))
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405 fun
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406 (not arg))
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407 (lisp-match-ring (concat "(" package
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408 "[^ \t\n]*-*" name)
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409 fun))))))
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410 (let ((form
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411 (save-excursion
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412 (buffer-substring (lisp-defun-begin)
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413 (lisp-end-defun-text t)))))
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414 (switch-to-lisp t t)
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415 (comint-kill-input)
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416 (insert form))))
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417
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418
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419
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420 ;;;
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421 (defun ilisp-send (string &optional message status and-go handler)
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422 "Send STRING to the ILISP buffer, print MESSAGE set STATUS and
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423 return the result if AND-GO is NIL, otherwise switch to ilisp if
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424 and-go is T and show message and results. If AND-GO is 'dispatch,
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425 then the command will be executed without waiting for results. If
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426 AND-GO is 'call, then a call will be generated. If this is the first
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427 time an ilisp command has been executed, the lisp will also be
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428 initialized from the files in ilisp-load-inits. If there is an error,
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429 comint-errorp will be T and it will be handled by HANDLER."
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430 (ilisp-init t)
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431 (let ((process (ilisp-process))
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432 (dispatch (eq and-go 'dispatch)))
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433 (if message
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434 (message "%s" (if dispatch
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435 (concat "Started " message)
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436 message)))
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437 ;; No completion table
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438 (setq ilisp-original nil)
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439 (if (memq and-go '(t call))
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440 (progn (comint-send process string nil nil status message handler)
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441 (if (eq and-go 'call)
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442 (call-defun-lisp nil)
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443 (switch-to-lisp t t))
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444 nil)
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445 (let* ((save (ilisp-value 'ilisp-save-command t))
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446 (result
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447 (comint-send
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448 process
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449 (if save (format save string) string)
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450 ;; Interrupt without waiting
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451 t (if (not dispatch) 'wait) status message handler)))
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452 (if save
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453 (comint-send
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454 process
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455 (ilisp-value 'ilisp-restore-command t)
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456 t nil 'restore "Restore" t t))
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457 (if (not dispatch)
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458 (progn
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459 (while (not (cdr result))
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460 (sit-for 0)
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461 (accept-process-output))
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462 (comint-remove-whitespace (car result))))))))
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463
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464
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465
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466 ;;;
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467 (defun ilisp-load-or-send (file)
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468 "Try to load FILE into the inferior LISP. If the file is not
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469 accessible in the inferior LISP as determined by
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470 ilisp-load-or-send-command, then visit the file and send the file over
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471 the process interface."
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472 (let* ((command
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473 (format (ilisp-value 'ilisp-load-or-send-command)
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474 (lisp-file-extension
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475 file
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476 (ilisp-value 'ilisp-init-binary-extension t))
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477 file)))
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478 (set-ilisp-value 'ilisp-load-files
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479 (nconc (ilisp-value 'ilisp-load-files t) (list file)))
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480 (comint-send
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481 (ilisp-process) command t nil 'load
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482 (format "Loading %s" file)
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483 (function (lambda (error wait message output last)
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484 (let* ((file (lisp-last ilisp-load-files))
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485 (process (get-buffer-process (current-buffer)))
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486 (case-fold-search t))
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487 (if (and output
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488 (string-match "nil" (car (lisp-last-line output))))
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489 (let* ((old-buffer (get-file-buffer file))
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490 (buffer (find-file-noselect file))
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491 (string (save-excursion
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492 (set-buffer buffer)
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493 (buffer-string))))
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494 (if (not old-buffer) (kill-buffer buffer))
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495 (if (string= "" string)
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496 (abort-commands-lisp (format "Can't find file %s" file))
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497 (comint-send
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498 process
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499 (format ilisp-block-command string)
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500 t nil 'send (format "Sending %s" file)
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501 (function (lambda (error wait message output last)
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502 (if error
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503 (progn
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504 (comint-display-error output)
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505 (abort-commands-lisp
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506 (format "Error sending %s"
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507 (lisp-last ilisp-load-files))))
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508 (setq ilisp-load-files
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509 (delq (lisp-last ilisp-load-files)
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510 ilisp-load-files))))))))
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511 (if error (ilisp-handler error wait message output last))
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512 (setq ilisp-load-files (delq file ilisp-load-files)))))))))
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