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1 ;;; simula.el --- SIMULA 87 code editing commands for Emacs
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2
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3 ;; Copyright (C) 1992 Free Software Foundation, Inc.
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4
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5 ;; Author: Hans Henrik Eriksen <hhe@ifi.uio.no>
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6 ;; Maintainer: simula-mode@ifi.uio.no
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7 ;; Version: 0.992
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8 ;; Adapted-By: ESR
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9 ;; Keywords: languages
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10
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11 ;; This file is part of XEmacs.
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12
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13 ;; XEmacs is free software; you can redistribute it and/or modify it
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14 ;; under the terms of the GNU General Public License as published by
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15 ;; the Free Software Foundation; either version 2, or (at your option)
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16 ;; any later version.
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17
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18 ;; XEmacs is distributed in the hope that it will be useful, but
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19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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21 ;; General Public License for more details.
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22
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23 ;; You should have received a copy of the GNU General Public License
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16
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24 ;; along with XEmacs; see the file COPYING. If not, write to the
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25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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26 ;; Boston, MA 02111-1307, USA.
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27
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28 ;;; Synched up with: FSF 19.30.
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29
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30 ;;; Commentary:
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31
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32 ;; A major mode for editing the Simula language. It knows about Simula
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33 ;; syntax and standard indentation commands. It also provides convenient
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34 ;; abbrevs for Simula keywords.
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35 ;;
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36 ;; Hans Henrik Eriksen (the author) may be reached at:
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37 ;; Institutt for informatikk,
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38 ;; Universitetet i Oslo
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39
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40 ;;; Code:
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41
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42 (provide 'simula-mode)
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43
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189
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44 (defgroup simula nil
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45 "SIMULA 87 code editing commands for Emacs."
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46 :group 'languages)
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47
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48
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49 (defcustom simula-tab-always-indent nil
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0
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50 "*Non-nil means TAB in SIMULA mode should always reindent the current line.
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51 Otherwise TAB indents only when point is within
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189
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52 the run of whitespace at the beginning of the line."
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53 :type 'boolean
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54 :group 'simula)
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0
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55
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189
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56 (defcustom simula-indent-level 3
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57 "*Indentation of SIMULA statements with respect to containing block."
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58 :type 'integer
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59 :group 'simula)
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60
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189
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61 (defcustom simula-substatement-offset 3
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62 "*Extra indentation after DO, THEN, ELSE, WHEN and OTHERWISE."
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63 :type 'integer
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64 :group 'simula)
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65
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66 (defcustom simula-continued-statement-offset 3
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0
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67 "*Extra indentation for lines not starting a statement or substatement.
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68 If value is a list, each line in a multipleline continued statement
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69 will have the car of the list extra indentation with respect to
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189
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70 the previous line of the statement."
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71 :type 'integer
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72 :group 'simula)
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0
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73
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189
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74 (defcustom simula-label-offset -4711
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75 "*Offset of SIMULA label lines relative to usual indentation."
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76 :type 'integer
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77 :group 'simula)
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0
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78
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189
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79 (defcustom simula-if-indent '(0 . 0)
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0
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80 "*Extra indentation of THEN and ELSE with respect to the starting IF.
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81 Value is a cons cell, the car is extra THEN indentation and the cdr
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189
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82 extra ELSE indentation. IF after ELSE is indented as the starting IF."
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83 :type '(cons (integer :tag "THEN")
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84 (integer :tag "ELSE"))
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85 :group 'simula)
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86
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189
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87 (defcustom simula-inspect-indent '(0 . 0)
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88 "*Extra indentation of WHEN and OTHERWISE with respect to the INSPECT.
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89 Value is a cons cell, the car is extra WHEN indentation
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189
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90 and the cdr extra OTHERWISE indentation."
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91 :type '(cons (integer :tag "WHEN")
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92 (integer :tag "OTHERWISE"))
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93 :group 'simula)
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94
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189
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95 (defcustom simula-electric-indent nil
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96 "*Non-nil means `simula-indent-line' function may reindent previous line."
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97 :type 'boolean
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98 :group 'simula)
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99
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189
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100 (defcustom simula-abbrev-keyword 'upcase
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101 "*Specify how to convert case for SIMULA keywords.
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102 Value is one of the symbols `upcase', `downcase', `capitalize',
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189
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103 \(as in) `abbrev-table' or nil if they should not be changed."
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104 :type '(choice (const upcase) (const downcase) (const capitalize)
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105 (const abbrev-table) (const nil))
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106 :group 'simula)
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107
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189
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108 (defcustom simula-abbrev-stdproc 'abbrev-table
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109 "*Specify how to convert case for standard SIMULA procedure and class names.
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110 Value is one of the symbols `upcase', `downcase', `capitalize',
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189
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111 \(as in) `abbrev-table', or nil if they should not be changed."
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112 :type '(choice (const upcase) (const downcase) (const capitalize)
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113 (const abbrev-table) (const nil))
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114 :group 'simula)
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115
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189
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116 (defcustom simula-abbrev-file nil
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117 "*File with extra abbrev definitions for use in SIMULA mode.
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118 These are used together with the standard abbrev definitions for SIMULA.
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119 Please note that the standard definitions are required
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189
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120 for SIMULA mode to function correctly."
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121 :type '(choice (const :tag "None")
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122 file)
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123 :group 'simula)
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124
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125 (defvar simula-mode-syntax-table nil
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126 "Syntax table in SIMULA mode buffers.")
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127
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128 (if simula-mode-syntax-table
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129 ()
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130 (setq simula-mode-syntax-table (copy-syntax-table nil))
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131 (modify-syntax-entry ?! "<" simula-mode-syntax-table)
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132 (modify-syntax-entry ?$ "." simula-mode-syntax-table)
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133 (modify-syntax-entry ?% "." simula-mode-syntax-table)
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134 (modify-syntax-entry ?' "\"" simula-mode-syntax-table)
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135 (modify-syntax-entry ?\( "()" simula-mode-syntax-table)
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136 (modify-syntax-entry ?\) ")(" simula-mode-syntax-table)
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137 (modify-syntax-entry ?\; ">" simula-mode-syntax-table)
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138 (modify-syntax-entry ?\[ "." simula-mode-syntax-table)
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139 (modify-syntax-entry ?\\ "." simula-mode-syntax-table)
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140 (modify-syntax-entry ?\] "." simula-mode-syntax-table)
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141 (modify-syntax-entry ?_ "w" simula-mode-syntax-table)
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142 (modify-syntax-entry ?\| "." simula-mode-syntax-table)
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143 (modify-syntax-entry ?\{ "." simula-mode-syntax-table)
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144 (modify-syntax-entry ?\} "." simula-mode-syntax-table))
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145
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146 (defvar simula-mode-map ()
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147 "Keymap used in SIMULA mode.")
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148
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149 (if simula-mode-map
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150 ()
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151 (setq simula-mode-map (make-sparse-keymap))
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152 (define-key simula-mode-map "\C-c\C-u" 'simula-backward-up-level)
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153 (define-key simula-mode-map "\C-c\C-p" 'simula-previous-statement)
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154 (define-key simula-mode-map "\C-c\C-d" 'simula-forward-down-level)
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155 (define-key simula-mode-map "\C-c\C-n" 'simula-next-statement)
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156 ;(define-key simula-mode-map "\C-c\C-g" 'simula-goto-definition)
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157 ;(define-key simula-mode-map "\C-c\C-h" 'simula-standard-help)
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158 (define-key simula-mode-map ":" 'simula-electric-label)
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159 (define-key simula-mode-map "\t" 'simula-indent-command))
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160
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161 (defvar simula-mode-abbrev-table nil
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162 "Abbrev table in SIMULA mode buffers")
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163
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164
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165 (defun simula-mode ()
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166 "Major mode for editing SIMULA code.
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167 \\{simula-mode-map}
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168 Variables controlling indentation style:
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169 simula-tab-always-indent
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170 Non-nil means TAB in SIMULA mode should always reindent the current line,
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171 regardless of where in the line point is when the TAB command is used.
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172 simula-indent-level
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173 Indentation of SIMULA statements with respect to containing block.
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174 simula-substatement-offset
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175 Extra indentation after DO, THEN, ELSE, WHEN and OTHERWISE.
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176 simula-continued-statement-offset 3
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177 Extra indentation for lines not starting a statement or substatement,
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178 e.g. a nested FOR-loop. If value is a list, each line in a multiple-
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179 line continued statement will have the car of the list extra indentation
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180 with respect to the previous line of the statement.
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181 simula-label-offset -4711
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182 Offset of SIMULA label lines relative to usual indentation.
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183 simula-if-indent '(0 . 0)
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184 Extra indentation of THEN and ELSE with respect to the starting IF.
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185 Value is a cons cell, the car is extra THEN indentation and the cdr
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186 extra ELSE indentation. IF after ELSE is indented as the starting IF.
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187 simula-inspect-indent '(0 . 0)
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188 Extra indentation of WHEN and OTHERWISE with respect to the
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189 corresponding INSPECT. Value is a cons cell, the car is
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190 extra WHEN indentation and the cdr extra OTHERWISE indentation.
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191 simula-electric-indent nil
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192 If this variable is non-nil, `simula-indent-line'
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193 will check the previous line to see if it has to be reindented.
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194 simula-abbrev-keyword 'upcase
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195 Determine how SIMULA keywords will be expanded. Value is one of
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196 the symbols `upcase', `downcase', `capitalize', (as in) `abbrev-table',
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197 or nil if they should not be changed.
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198 simula-abbrev-stdproc 'abbrev-table
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199 Determine how standard SIMULA procedure and class names will be
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200 expanded. Value is one of the symbols `upcase', `downcase', `capitalize',
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201 (as in) `abbrev-table', or nil if they should not be changed.
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202
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203 Turning on SIMULA mode calls the value of the variable simula-mode-hook
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204 with no arguments, if that value is non-nil
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205
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206 Warning: simula-mode-hook should not read in an abbrev file without calling
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207 the function simula-install-standard-abbrevs afterwards, preferably not
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208 at all."
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209 (interactive)
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210 (kill-all-local-variables)
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211 (use-local-map simula-mode-map)
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212 (setq major-mode 'simula-mode)
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213 (setq mode-name "SIMULA")
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214 (make-local-variable 'comment-column)
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215 (setq comment-column 40)
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216 (make-local-variable 'end-comment-column)
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217 (setq end-comment-column 75)
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218 (set-syntax-table simula-mode-syntax-table)
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219 (make-local-variable 'paragraph-start)
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220 (setq paragraph-start "[ \t]*$\\|\\f")
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221 (make-local-variable 'paragraph-separate)
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222 (setq paragraph-separate paragraph-start)
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223 (make-local-variable 'indent-line-function)
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224 (setq indent-line-function 'simula-indent-line)
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225 (make-local-variable 'require-final-newline)
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226 (setq require-final-newline t)
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227 (make-local-variable 'comment-start)
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228 (setq comment-start "! ")
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229 (make-local-variable 'comment-end)
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230 (setq comment-end " ;")
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231 (make-local-variable 'comment-start-skip)
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232 (setq comment-start-skip "!+ *")
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233 (make-local-variable 'parse-sexp-ignore-comments)
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234 (setq parse-sexp-ignore-comments nil)
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235 (make-local-variable 'comment-multi-line)
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236 (setq comment-multi-line t)
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237 (if simula-mode-abbrev-table
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238 ()
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239 (if simula-abbrev-file
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240 (read-abbrev-file simula-abbrev-file)
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241 (define-abbrev-table 'simula-mode-abbrev-table ()))
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242 (let (abbrevs-changed)
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243 (simula-install-standard-abbrevs)))
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244 (setq local-abbrev-table simula-mode-abbrev-table)
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245 (abbrev-mode 1)
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246 (run-hooks 'simula-mode-hook))
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247
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248
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249
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250 (defun simula-indent-line ()
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251 "Indent this line as SIMULA code.
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252 If `simula-electric-indent' is non-nil, indent previous line if necessary."
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253 (let ((origin (- (point-max) (point)))
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254 (indent (simula-calculate-indent))
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255 (case-fold-search t))
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256 (unwind-protect
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257 (progn
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258 ;;
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259 ;; manually expand abbrev on last line, if any
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260 ;;
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261 (end-of-line 0)
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262 (expand-abbrev)
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263 ;; now maybe we should reindent that line
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264 (if simula-electric-indent
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265 (progn
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266 (beginning-of-line)
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267 (skip-chars-forward " \t\f")
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268 (if (and
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269 (looking-at
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270 "\\(end\\|if\\|then\\|else\\|when\\|otherwise\\)\\>")
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271 (not (simula-context)))
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272 ;; yes - reindent
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273 (let ((post-indent (simula-calculate-indent)))
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274 (if (eq (current-indentation) post-indent)
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275 ()
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276 (delete-horizontal-space)
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277 (indent-to post-indent)))))))
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278 (goto-char (- (point-max) origin))
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279 (if (eq (current-indentation) indent)
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280 (back-to-indentation)
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281 (delete-horizontal-space)
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282 (indent-to indent)))))
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283
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284
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285 (defun simula-indent-command (&optional whole-exp)
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286 "Indent current line as SIMULA code, or insert TAB character.
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287 If `simula-tab-always-indent' is non-nil, always indent current line.
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288 Otherwise, indent only if point is before any non-whitespace
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289 character on the line.
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290
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291 A numeric argument, regardless of its value, means indent rigidly
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292 all the lines of the SIMULA statement after point so that this line
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293 becomes properly indented.
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294 The relative indentation among the lines of the statement are preserved."
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295 (interactive "P")
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296 (let ((case-fold-search t))
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297 (if (or whole-exp simula-tab-always-indent
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298 (save-excursion
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299 (skip-chars-backward " \t\f")
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300 (bolp)))
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301 ;; reindent current line
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302 (let ((indent (save-excursion
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303 (beginning-of-line)
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304 (simula-calculate-indent)))
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305 (current (current-indentation))
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306 (origin (- (point-max) (point)))
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307 (bol (save-excursion
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308 (skip-chars-backward " \t\f")
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309 (bolp)))
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310 beg end)
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311 (unwind-protect
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312 (if (eq current indent)
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313 (if (save-excursion
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314 (skip-chars-backward " \t\f")
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315 (bolp))
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316 (back-to-indentation))
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317 (beginning-of-line)
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318 (delete-horizontal-space)
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319 (indent-to indent))
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320 (if (not bol)
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321 (goto-char (- (point-max) origin))))
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322 (setq origin (point))
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323 (if whole-exp
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324 (save-excursion
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325 (beginning-of-line 2)
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326 (setq beg (point))
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327 (goto-char origin)
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328 (simula-next-statement 1)
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329 (setq end (point))
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330 (if (and (> end beg) (not (eq indent current)))
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331 (indent-code-rigidly beg end (- indent current) "%")))))
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332 (insert-tab))))
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333
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334
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335 (defun simula-context ()
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336 "Returns value according to syntactic SIMULA context of point.
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337 0 point inside COMMENT comment
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338 1 point on SIMULA-compiler directive line
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339 2 point inside END comment
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340 3 point inside string
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341 4 point inside character constant
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342 nil otherwise."
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343 ;; first, find out if this is a compiler directive line
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344 (if (save-excursion
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345 (beginning-of-line)
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346 (eq (following-char) ?%))
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347 ;; YES - return 1
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348 1
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349 (save-excursion
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350 ;; The current line is NOT a compiler directive line.
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351 ;; Now, the strategy is to search backward to find a semicolon
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352 ;; that is NOT inside a string. The point after semicolon MUST be
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353 ;; outside a comment, since semicolons are comment-ending and
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354 ;; comments are non-recursive. We take advantage of the fact
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355 ;; that strings MUST end on the same line as they started, so
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356 ;; that we can easily decide whether we are inside a string or not.
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357 (let (return-value (origin (point)))
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358 (skip-chars-backward "^;" (point-min))
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359 ;; found semicolon or beginning of buffer
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360 (let (loopvalue (saved-point origin))
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361 (while (and (not (bobp))
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362 (if (progn
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363 (beginning-of-line)
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364 ;; compiler directive line? If so, cont searching..
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365 (eq (following-char) ?%))
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366 t
|
|
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367 (while (< (point) saved-point)
|
|
|
368 (skip-chars-forward "^;\"'")
|
|
|
369 (forward-char 1)
|
|
|
370 (cond
|
|
|
371 ((eq (preceding-char) ?\;)
|
|
|
372 (setq saved-point (point)))
|
|
|
373 ((eq (preceding-char) ?\")
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|
|
374 (skip-chars-forward "^\";")
|
|
|
375 (if (eq (following-char) ?\;)
|
|
|
376 (setq saved-point (point) loopvalue t)
|
|
|
377 (forward-char 1)))
|
|
|
378 (t
|
|
|
379 (if (eq (following-char) ?')
|
|
|
380 (forward-char 1))
|
|
|
381 (skip-chars-forward "^';")
|
|
|
382 (if (eq (following-char) ?\;)
|
|
|
383 (setq saved-point (point) loopvalue t)
|
|
|
384 (forward-char 1)))))
|
|
|
385 loopvalue))
|
|
|
386 (backward-char 1)
|
|
|
387 (skip-chars-backward "^;")
|
|
|
388 (setq saved-point (point) loopvalue nil)))
|
|
|
389 ;; Now we are CERTAIN that we are outside comments and strings.
|
|
|
390 ;; The job now is to search forward again towards the origin
|
|
|
391 ;; skipping directives, comments and strings correctly,
|
|
|
392 ;; so that we know what context we are in when we find the origin.
|
|
|
393 (while (and
|
|
|
394 (< (point) origin)
|
|
|
395 (re-search-forward
|
|
|
396 "\\<end\\>\\|!\\|\"\\|'\\|^%\\|\\<comment\\>" origin 'move))
|
|
|
397 (cond
|
|
|
398 ((memq (preceding-char) '(?d ?D))
|
|
|
399 (setq return-value 2)
|
|
|
400 (while (and (memq (preceding-char) '(?d ?D)) (not return-value))
|
|
|
401 (while (and (re-search-forward
|
|
|
402 ";\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>\\|^%"
|
|
|
403 origin 'move)
|
|
|
404 (eq (preceding-char) ?%))
|
|
|
405 (beginning-of-line 2)))
|
|
|
406 (if (looking-at "[ \t\n\f]*\\(;\\|\\<end\\>\\|\\<else\\>\\|\\<otherwise\\>\\|\\<when\\>\\)")
|
|
|
407 (setq return-value nil)))
|
|
|
408 ((memq (preceding-char) '(?! ?t ?T))
|
|
|
409 ; skip comment
|
|
|
410 (setq return-value 0)
|
|
|
411 (skip-chars-forward "^%;" origin)
|
|
|
412 (while (and return-value (< (point) origin))
|
|
|
413 (if (eq (following-char) ?\;)
|
|
|
414 (setq return-value nil)
|
|
|
415 (if (bolp)
|
|
|
416 (beginning-of-line 2) ; skip directive inside comment
|
|
|
417 (forward-char 1)) ; or single '%'
|
|
|
418 (skip-chars-forward "^%;" origin))))
|
|
|
419 ((eq (preceding-char) ?\")
|
|
|
420 (if (not (search-forward "\"" origin 'move))
|
|
|
421 (setq return-value 3)))
|
|
|
422 ((eq (preceding-char) ?\')
|
|
|
423 (if (or (eq (point) origin) (eobp))
|
|
|
424 (setq return-value 4)
|
|
|
425 (forward-char 1)
|
|
|
426 (if (not (search-forward "'" origin 'move))
|
|
|
427 (setq return-value 4))))
|
|
|
428 ;; compiler directive line - skip
|
|
|
429 (t (beginning-of-line 2))))
|
|
|
430 return-value)
|
|
|
431 )))
|
|
|
432
|
|
|
433
|
|
|
434 (defun simula-electric-label ()
|
|
|
435 "If this is a label that starts the line, reindent the line."
|
|
|
436 (interactive)
|
|
|
437 (expand-abbrev)
|
|
|
438 (insert ?:)
|
|
|
439 (let ((origin (- (point-max) (point)))
|
|
|
440 (case-fold-search t)
|
|
|
441 ;; don't mix a label with an assignment operator := :-
|
|
|
442 ;; therefore look at next typed character...
|
|
|
443 (next-char (if (fboundp 'next-command-event)
|
|
|
444 (event-to-character (setq unread-command-events
|
|
|
445 (list (next-command-event))))
|
|
|
446 ;; FSFmacs
|
|
|
447 (setq unread-command-events (list (read-event)))))
|
|
|
448 ;(com-char last-command-char) -- unused
|
|
|
449 )
|
|
|
450 (unwind-protect
|
|
|
451 ;; Problem: find out if character just read is a command char
|
|
|
452 ;; that would insert something after ':' making it a label.
|
|
|
453 ;; At least \n, \r (and maybe \t) falls into this category.
|
|
|
454 ;; This is a real crock, it depends on traditional keymap
|
|
|
455 ;; bindings, that is, printing characters doing self-insert,
|
|
|
456 ;; and no other command sequence inserting '-' or '='.
|
|
|
457 ;; simula-electric-label can be easily fooled...
|
|
|
458 (if (and (not (memq next-char '(?= ?-)))
|
|
|
459 (or (memq next-char '(?\n ?\r))
|
|
|
460 (and (eq next-char ?\t)
|
|
|
461 simula-tab-always-indent)
|
|
|
462 (not (memq (following-char) '(?= ?-))))
|
|
|
463 (not (simula-context))
|
|
|
464 ;; label?
|
|
|
465 (progn
|
|
|
466 (backward-char 1)
|
|
|
467 (skip-chars-backward " \t\f")
|
|
|
468 (skip-chars-backward "a-zA-Z0-9_")
|
|
|
469 (if (looking-at "virtual\\>")
|
|
|
470 nil
|
|
|
471 (skip-chars-backward " \t\f")
|
|
|
472 (bolp))))
|
|
|
473 (let ((amount (simula-calculate-indent)))
|
|
|
474 (delete-horizontal-space)
|
|
|
475 (indent-to amount)))
|
|
|
476 (goto-char (- (point-max) origin)))))
|
|
|
477
|
|
|
478
|
|
|
479 (defun simula-backward-up-level (count)
|
|
|
480 "Move backward up COUNT block levels.
|
|
|
481 If COUNT is negative, move forward up block level instead."
|
|
|
482 (interactive "p")
|
|
|
483 (let ((origin (point))
|
|
|
484 (case-fold-search t))
|
|
|
485 (condition-case ()
|
|
|
486 (if (> count 0)
|
|
|
487 (while (> count 0)
|
|
|
488 (re-search-backward "\\<begin\\>\\|\\<end\\>")
|
|
|
489 (if (not (simula-context))
|
|
|
490 (setq count (if (memq (following-char) '(?b ?B))
|
|
|
491 (1- count)
|
|
|
492 (1+ count)))))
|
|
|
493 (while (< count 0)
|
|
|
494 (re-search-forward "\\<begin\\>\\|\\<end\\>")
|
|
|
495 (backward-word 1)
|
|
|
496 (if (not (simula-context))
|
|
|
497 (setq count (if (memq (following-char) '(?e ?E))
|
|
|
498 (1+ count)
|
|
|
499 (1- count))))
|
|
|
500 (backward-word -1)))
|
|
|
501 ;; If block level not found, jump back to origin and signal an error
|
|
|
502 (error (progn
|
|
|
503 (goto-char origin)
|
|
|
504 (error "No higher block level")))
|
|
|
505 (quit (progn
|
|
|
506 (goto-char origin)
|
|
|
507 (signal 'quit nil))))))
|
|
|
508
|
|
|
509
|
|
|
510 (defun simula-forward-down-level (count)
|
|
|
511 "Move forward down COUNT block levels.
|
|
|
512 If COUNT is negative, move backward down block level instead."
|
|
|
513 (interactive "p")
|
|
|
514 ;; When we search for a deeper block level, we must never
|
|
|
515 ;; get out of the block where we started -> count >= start-count
|
|
|
516 (let ((start-count count)
|
|
|
517 (origin (point))
|
|
|
518 (case-fold-search t))
|
|
|
519 (condition-case ()
|
|
|
520 (if (< count 0)
|
|
|
521 (while (< count 0)
|
|
|
522 (re-search-backward "\\<begin\\>\\|\\<end\\>")
|
|
|
523 (if (not (simula-context))
|
|
|
524 (setq count (if (memq (following-char) '(?e ?E))
|
|
|
525 (1+ count)
|
|
|
526 (1- count))))
|
|
|
527 (if (< count start-count) (signal 'error nil)))
|
|
|
528 (while (> count 0)
|
|
|
529 (re-search-forward "\\<begin\\>\\|\\<end\\>")
|
|
|
530 (backward-word 1)
|
|
|
531 (if (not (simula-context))
|
|
|
532 (setq count (if (memq (following-char) '(?b ?B))
|
|
|
533 (1- count)
|
|
|
534 (1+ count))))
|
|
|
535 (backward-word -1)
|
|
|
536 ;; deeper level has to be found within starting block
|
|
|
537 (if (> count start-count) (signal 'error nil))))
|
|
|
538 ;; If block level not found, jump back to origin and signal an error
|
|
|
539 (error (progn
|
|
|
540 (goto-char origin)
|
|
|
541 (error "No containing block level")))
|
|
|
542 (quit (progn
|
|
|
543 (goto-char origin)
|
|
|
544 (signal 'quit nil))))))
|
|
|
545
|
|
|
546
|
|
|
547 (defun simula-previous-statement (count)
|
|
|
548 "Move backward COUNT statements.
|
|
|
549 If COUNT is negative, move forward instead."
|
|
|
550 (interactive "p")
|
|
|
551 (if (< count 0)
|
|
|
552 (simula-next-statement (- count))
|
|
|
553 (let (status
|
|
|
554 (case-fold-search t)
|
|
|
555 (origin (point)))
|
|
|
556 (condition-case ()
|
|
|
557 (progn
|
|
|
558 (simula-skip-comment-backward)
|
|
|
559 (if (memq (preceding-char) '(?n ?N))
|
|
|
560 (progn
|
|
|
561 (backward-word 1)
|
|
|
562 (if (not (looking-at "\\<begin\\>"))
|
|
|
563 (backward-word -1)))
|
|
|
564 (if (eq (preceding-char) ?\;)
|
|
|
565 (backward-char 1)))
|
|
|
566 (while (and (natnump (setq count (1- count)))
|
|
|
567 (setq status (simula-search-backward
|
|
|
568 ";\\|\\<begin\\>" nil 'move))))
|
|
|
569 (if status
|
|
|
570 (progn
|
|
|
571 (if (eq (following-char) ?\;)
|
|
|
572 (forward-char 1)
|
|
|
573 (backward-word -1))))
|
|
|
574 (simula-skip-comment-forward))
|
|
|
575 (error (progn (goto-char origin)
|
|
|
576 (error "Incomplete statement (too many ENDs)")))
|
|
|
577 (quit (progn (goto-char origin) (signal 'quit nil)))))))
|
|
|
578
|
|
|
579
|
|
|
580 (defun simula-next-statement (count)
|
|
|
581 "Move forward COUNT statements.
|
|
|
582 If COUNT is negative, move backward instead."
|
|
|
583 (interactive "p")
|
|
|
584 (if (< count 0)
|
|
|
585 (simula-previous-statement (- count))
|
|
|
586 (let (status
|
|
|
587 (case-fold-search t)
|
|
|
588 (origin (point)))
|
|
|
589 (condition-case ()
|
|
|
590 (progn
|
|
|
591 (simula-skip-comment-forward)
|
|
|
592 (if (looking-at "\\<end\\>") (forward-word 1))
|
|
|
593 (while (and (natnump (setq count (1- count)))
|
|
|
594 (setq status (simula-search-forward
|
|
|
595 ";\\|\\<end\\>" (point-max) 'move))))
|
|
|
596 (if (and status (/= (preceding-char) ?\;))
|
|
|
597 (progn
|
|
|
598 (backward-word 1)
|
|
|
599 (simula-skip-comment-backward))))
|
|
|
600 (error (progn (goto-char origin)
|
|
|
601 (error "Incomplete statement (too few ENDs)")))
|
|
|
602 (quit (progn (goto-char origin) (signal 'quit nil)))))))
|
|
|
603
|
|
|
604
|
|
|
605 (defun simula-skip-comment-backward ()
|
|
|
606 "Search towards bob to find first char that is outside a comment."
|
|
|
607 (interactive)
|
|
|
608 (catch 'simula-out
|
|
|
609 (let (context)
|
|
|
610 (while t
|
|
|
611 (skip-chars-backward " \t\n\f")
|
|
|
612 (if (eq (preceding-char) ?\;)
|
|
|
613 (save-excursion
|
|
|
614 (backward-char 1)
|
|
|
615 (setq context (simula-context)))
|
|
|
616 (setq context (simula-context)))
|
|
|
617 (cond
|
|
|
618 ((memq context '(nil 3 4))
|
|
|
619 ;; check to see if we found a label
|
|
|
620 (if (and (eq (preceding-char) ?:)
|
|
|
621 (not (memq (following-char) '(?- ?=)))
|
|
|
622 (save-excursion
|
|
|
623 (skip-chars-backward ": \t\fa-zA-Z0-9_")
|
|
|
624 (not (looking-at "virtual\\>"))))
|
|
|
625 (skip-chars-backward ": \t\fa-zA-Z0-9_")
|
|
|
626 (throw 'simula-out nil)))
|
|
|
627 ((eq context 0)
|
|
|
628 ;; since we are inside a comment, it must start somewhere!
|
|
|
629 (while (and (re-search-backward "!\\|\\<comment\\>")
|
|
|
630 (memq (simula-context) '(0 1)))))
|
|
|
631 ((eq context 1)
|
|
|
632 (end-of-line 0)
|
|
|
633 (if (bobp)
|
|
|
634 (throw 'simula-out nil)))
|
|
|
635 ((eq context 2)
|
|
|
636 ;; an END-comment must belong to an END
|
|
|
637 (re-search-backward "\\<end\\>")
|
|
|
638 (forward-word 1)
|
|
|
639 (throw 'simula-out nil))
|
|
|
640 ;; should be impossible to get here..
|
|
|
641 )))))
|
|
|
642
|
|
|
643
|
|
|
644 (defun simula-skip-comment-forward ()
|
|
|
645 "Search towards eob to find first char that is outside a comment."
|
|
|
646 ;; this function assumes we start with point .outside a comment
|
|
|
647 (interactive)
|
|
|
648 (catch 'simula-out
|
|
|
649 (while t
|
|
|
650 (skip-chars-forward " \t\n\f")
|
|
|
651 (cond
|
|
|
652 ((looking-at "!\\|\\<comment\\>")
|
|
|
653 (search-forward ";" nil 'move))
|
|
|
654 ((and (bolp) (eq (following-char) ?%))
|
|
|
655 (beginning-of-line 2))
|
|
|
656 ((and (looking-at "[a-z0-9_]*[ \t\f]*:[^-=]")
|
|
|
657 (not (looking-at "virtual\\>")))
|
|
|
658 (skip-chars-forward "a-zA-Z0-9_ \t\f:"))
|
|
|
659 (t
|
|
|
660 (throw 'simula-out t))))))
|
|
|
661
|
|
|
662
|
|
|
663 (defun simula-forward-up-level ()
|
|
|
664 (let ((continue-loop t)
|
|
|
665 (origin (point))
|
|
|
666 (case-fold-search t)
|
|
|
667 return-value
|
|
|
668 temp)
|
|
|
669 (while continue-loop
|
|
|
670 (if (re-search-backward "\\<begin\\>\\|\\<end\\>" (point-min) 'move)
|
|
|
671 (setq temp (simula-context)
|
|
|
672 return-value (and (memq (preceding-char) '(?d ?D))
|
|
|
673 (memq temp '(nil 2)))
|
|
|
674 continue-loop (and (not return-value)
|
|
|
675 (simula-forward-up-level)))
|
|
|
676 (setq continue-loop nil)))
|
|
|
677 (if return-value
|
|
|
678 t
|
|
|
679 (goto-char origin)
|
|
|
680 nil)))
|
|
|
681
|
|
|
682
|
|
|
683 (defun simula-calculate-indent ()
|
|
|
684 (save-excursion
|
|
|
685 (let ((where (simula-context))
|
|
|
686 (origin (point))
|
|
|
687 (indent 0)
|
|
|
688 continued
|
|
|
689 start-line
|
|
|
690 temp
|
|
|
691 found-end
|
|
|
692 prev-cont)
|
|
|
693 (cond
|
|
|
694 ((eq where 0)
|
|
|
695 ;;
|
|
|
696 ;; Comment.
|
|
|
697 ;; If comment started on previous non-blank line, indent to the
|
|
|
698 ;; column where the comment started, else indent as that line.
|
|
|
699 ;;
|
|
|
700 (skip-chars-backward " \t\n\f")
|
|
|
701 (while (and (not (bolp)) (eq (simula-context) 0))
|
|
|
702 (re-search-backward "^\\|!\\|\\<comment\\>"))
|
|
|
703 (skip-chars-forward " \t\n\f")
|
|
|
704 (prog1
|
|
|
705 (current-column)
|
|
|
706 (goto-char origin)))
|
|
|
707 ;;
|
|
|
708 ;; Detect missing string delimiters
|
|
|
709 ;;
|
|
|
710 ((eq where 3)
|
|
|
711 (error "Inside string"))
|
|
|
712 ((eq where 4)
|
|
|
713 (error "Inside character constant"))
|
|
|
714 ;;
|
|
|
715 ;; check to see if inside ()'s
|
|
|
716 ;;
|
|
|
717 ((setq temp (simula-inside-parens))
|
|
|
718 temp)
|
|
|
719 ;;
|
|
|
720 ;; Calculate non-comment indentation
|
|
|
721 (t
|
|
|
722 ;; first, find out if this line starts with something that needs
|
|
|
723 ;; special indentation (END/IF/THEN/ELSE/WHEN/OTHERWISE or label)
|
|
|
724 ;;
|
|
|
725 (skip-chars-forward " \t\f")
|
|
|
726 (cond
|
|
|
727 ;;
|
|
|
728 ;; END
|
|
|
729 ;;
|
|
|
730 ((looking-at "end\\>")
|
|
|
731 (setq indent (- simula-indent-level)
|
|
|
732 found-end t))
|
|
|
733 ;;
|
|
|
734 ;; IF/THEN/ELSE
|
|
|
735 ;;
|
|
|
736 ((looking-at "if\\>\\|then\\>\\|else\\>")
|
|
|
737 ;; search for the *starting* IF
|
|
|
738 (cond
|
|
|
739 ((memq (following-char) '(?T ?t))
|
|
|
740 (setq indent (car simula-if-indent)))
|
|
|
741 ((memq (following-char) '(?E ?e))
|
|
|
742 (setq indent (cdr simula-if-indent)))
|
|
|
743 (t
|
|
|
744 (forward-word 1)
|
|
|
745 (setq indent 0)))
|
|
|
746 (simula-find-if))
|
|
|
747 ;;
|
|
|
748 ;; WHEN/OTHERWISE
|
|
|
749 ;;
|
|
|
750 ((looking-at "when\\>\\|otherwise\\>")
|
|
|
751 ;; search for corresponding INSPECT
|
|
|
752 (if (memq (following-char) '(?W ?w))
|
|
|
753 (setq indent (car simula-inspect-indent))
|
|
|
754 (setq indent (cdr simula-inspect-indent)))
|
|
|
755 (simula-find-inspect))
|
|
|
756 ;;
|
|
|
757 ;; label:
|
|
|
758 ;;
|
|
|
759 ((and (not (looking-at "virtual\\>"))
|
|
|
760 (looking-at "[a-z0-9_]*[ \t\f]*:[^-=]"))
|
|
|
761 (setq indent simula-label-offset)))
|
|
|
762 ;; find line with non-comment text
|
|
|
763 (simula-skip-comment-backward)
|
|
|
764 (if (and found-end
|
|
|
765 (not (eq (preceding-char) ?\;))
|
|
|
766 (if (memq (preceding-char) '(?N ?n))
|
|
|
767 (save-excursion
|
|
|
768 (backward-word 1)
|
|
|
769 (not (looking-at "begin\\>")))
|
|
|
770 t))
|
|
|
771 (progn
|
|
|
772 (simula-previous-statement 1)
|
|
|
773 (simula-skip-comment-backward)))
|
|
|
774 (setq start-line
|
|
|
775 (save-excursion (beginning-of-line) (point))
|
|
|
776 ;; - perhaps this is a continued statement
|
|
|
777 continued
|
|
|
778 (save-excursion
|
|
|
779 (and (not (bobp))
|
|
|
780 ;; (not found-end)
|
|
|
781 (if (eq (char-syntax (preceding-char)) ?w)
|
|
|
782 (progn
|
|
|
783 (backward-word 1)
|
|
|
784 (not (looking-at
|
|
|
785 "begin\\|then\\|else\\|when\\|otherwise\\|do"
|
|
|
786 )))
|
|
|
787 (not (memq (preceding-char) '(?: ?\;)))))))
|
|
|
788 ;;
|
|
|
789 ;; MAIN calculation loop - count BEGIN/DO etc.
|
|
|
790 ;;
|
|
|
791 (while (not (bolp))
|
|
|
792 (if (re-search-backward
|
|
|
793 ";\\|\\<\\(begin\\|end\\|if\\|else\\|then\\|when\\|otherwise\\|do\\)\\>"
|
|
|
794 start-line 'move)
|
|
|
795 (if (simula-context)
|
|
|
796 ();; found something in a comment/string - ignore
|
|
|
797 (setq temp (following-char))
|
|
|
798 (cond
|
|
|
799 ((eq temp ?\;)
|
|
|
800 (simula-previous-statement 1))
|
|
|
801 ((looking-at "begin\\>")
|
|
|
802 (setq indent (+ indent simula-indent-level)))
|
|
|
803 ((looking-at "end\\>")
|
|
|
804 (forward-word 1)
|
|
|
805 (simula-previous-statement 1))
|
|
|
806 ((looking-at "do\\>")
|
|
|
807 (setq indent (+ indent simula-substatement-offset))
|
|
|
808 (simula-find-do-match))
|
|
|
809 ((looking-at "\\(if\\|then\\|else\\)\\>")
|
|
|
810 (if (memq temp '(?I ?i))
|
|
|
811 (forward-word 1)
|
|
|
812 (setq indent (+ indent
|
|
|
813 simula-substatement-offset
|
|
|
814 (if (memq temp '(?T ?t))
|
|
|
815 (car simula-if-indent)
|
|
|
816 (cdr simula-if-indent)))))
|
|
|
817 (simula-find-if))
|
|
|
818 ((looking-at "\\<when\\>\\|\\<otherwise\\>")
|
|
|
819 (setq indent (+ indent
|
|
|
820 simula-substatement-offset
|
|
|
821 (if (memq temp '(?W ?w))
|
|
|
822 (car simula-if-indent)
|
|
|
823 (cdr simula-if-indent))))
|
|
|
824 (simula-find-inspect)))
|
|
|
825 ;; found the start of a [sub]statement
|
|
|
826 ;; add indentation for continued statement
|
|
|
827 (if continued
|
|
|
828 (setq indent
|
|
|
829 (+ indent
|
|
|
830 (if (listp simula-continued-statement-offset)
|
|
|
831 (car simula-continued-statement-offset)
|
|
|
832 simula-continued-statement-offset))))
|
|
|
833 (setq start-line
|
|
|
834 (save-excursion (beginning-of-line) (point))
|
|
|
835 continued nil))
|
|
|
836 ;; search failed .. point is at beginning of line
|
|
|
837 ;; determine if we should continue searching
|
|
|
838 ;; (at or before comment or label)
|
|
|
839 ;; temp = t means finished
|
|
|
840 (setq temp
|
|
|
841 (and (not (simula-context))
|
|
|
842 (save-excursion
|
|
|
843 (skip-chars-forward " \t\f")
|
|
|
844 (or (looking-at "virtual")
|
|
|
845 (not
|
|
|
846 (looking-at
|
|
|
847 "!\\|comment\\>\\|[a-z0-9_]*[ \t\f]*:[^-=]")))))
|
|
|
848 prev-cont continued)
|
|
|
849 ;; if we are finished, find current line's indentation
|
|
|
850 (if temp
|
|
|
851 (setq indent (+ indent (current-indentation))))
|
|
|
852 ;; find next line with non-comment SIMULA text
|
|
|
853 ;; maybe indent extra if statement continues
|
|
|
854 (simula-skip-comment-backward)
|
|
|
855 (setq continued
|
|
|
856 (and (not (bobp))
|
|
|
857 (if (eq (char-syntax (preceding-char)) ?w)
|
|
|
858 (save-excursion
|
|
|
859 (backward-word 1)
|
|
|
860 (not (looking-at
|
|
|
861 "begin\\|then\\|else\\|when\\|otherwise\\|do")))
|
|
|
862 (not (memq (preceding-char) '(?: ?\;))))))
|
|
|
863 ;; if we the state of the continued-variable
|
|
|
864 ;; changed, add indentation for continued statement
|
|
|
865 (if (or (and prev-cont (not continued))
|
|
|
866 (and continued
|
|
|
867 (listp simula-continued-statement-offset)))
|
|
|
868 (setq indent
|
|
|
869 (+ indent
|
|
|
870 (if (listp simula-continued-statement-offset)
|
|
|
871 (car simula-continued-statement-offset)
|
|
|
872 simula-continued-statement-offset))))
|
|
|
873 ;; while ends if point is at beginning of line at loop test
|
|
|
874 (if (not temp)
|
|
|
875 (setq start-line (save-excursion (beginning-of-line) (point)))
|
|
|
876 (beginning-of-line))))
|
|
|
877 ;;
|
|
|
878 ;; return indentation
|
|
|
879 ;;
|
|
|
880 indent)))))
|
|
|
881
|
|
|
882
|
|
|
883 (defun simula-find-if ()
|
|
|
884 "Find starting IF of a IF-THEN[-ELSE[-IF-THEN...]] statement."
|
|
|
885 (catch 'simula-out
|
|
|
886 (while t
|
|
|
887 (if (and (simula-search-backward "\\<if\\>\\|;\\|\\<begin\\>"nil t)
|
|
|
888 (memq (following-char) '(?I ?i)))
|
|
|
889 (save-excursion
|
|
|
890 ;;
|
|
|
891 ;; find out if this IF was really the start of the IF statement
|
|
|
892 ;;
|
|
|
893 (simula-skip-comment-backward)
|
|
|
894 (if (and (eq (char-syntax (preceding-char)) ?w)
|
|
|
895 (progn
|
|
|
896 (backward-word 1)
|
|
|
897 (looking-at "else\\>")))
|
|
|
898 ()
|
|
|
899 (throw 'simula-out t)))
|
|
|
900 (if (not (looking-at "\\<if\\>"))
|
|
|
901 (error "Missing IF or misplaced BEGIN or ';' (can't find IF)")
|
|
|
902 ;;
|
|
|
903 ;; we were at the starting IF in the first place..
|
|
|
904 ;;
|
|
|
905 (throw 'simula-out t))))))
|
|
|
906
|
|
|
907
|
|
|
908 (defun simula-find-inspect ()
|
|
|
909 "Find INSPECT matching WHEN or OTHERWISE."
|
|
|
910 (catch 'simula-out
|
|
|
911 (let ((level 0))
|
|
|
912 ;;
|
|
|
913 ;; INSPECTs can be nested, have to find the corresponding one
|
|
|
914 ;;
|
|
|
915 (while t
|
|
|
916 (if (and (simula-search-backward "\\<inspect\\>\\|\\<otherwise\\>\\|;"
|
|
|
917 nil t)
|
|
|
918 (/= (following-char) ?\;))
|
|
|
919 (if (memq (following-char) '(?O ?o))
|
|
|
920 (setq level (1+ level))
|
|
|
921 (if (zerop level)
|
|
|
922 (throw 'simula-out t)
|
|
|
923 (setq level (1- level))))
|
|
|
924 (error "Missing INSPECT or misplaced ';' (can't find INSPECT)"))))))
|
|
|
925
|
|
|
926
|
|
|
927 (defun simula-find-do-match ()
|
|
|
928 "Find keyword matching DO: FOR, WHILE, INSPECT or WHEN"
|
|
|
929 (while (and (re-search-backward
|
|
|
930 "\\<\\(do\\|for\\|while\\|inspect\\|when\\|end\\|begin\\)\\>\\|;"
|
|
|
931 nil 'move)
|
|
|
932 (simula-context)))
|
|
|
933 (if (and (looking-at "\\<\\(for\\|while\\|inspect\\|when\\)\\>")
|
|
|
934 (not (simula-context)))
|
|
|
935 () ;; found match
|
|
|
936 (error "No matching FOR, WHILE or INSPECT for DO, or misplaced ';'")))
|
|
|
937
|
|
|
938
|
|
|
939 (defun simula-inside-parens ()
|
|
|
940 "Return position after `(' on line if inside parentheses, nil otherwise."
|
|
|
941 (save-excursion
|
|
|
942 (let ((parlevel 0))
|
|
|
943 (catch 'simula-out
|
|
|
944 (while t
|
|
|
945 (if (re-search-backward "(\\|)\\|;" nil t)
|
|
|
946 (if (eq (simula-context) nil)
|
|
|
947 ;; found something - check it out
|
|
|
948 (cond
|
|
|
949 ((eq (following-char) ?\;)
|
|
|
950 (if (zerop parlevel)
|
|
|
951 (throw 'simula-out nil)
|
|
|
952 (error "Parenthesis mismatch or misplaced ';'")))
|
|
|
953 ((eq (following-char) ?\()
|
|
|
954 (if (zerop parlevel)
|
|
|
955 (throw 'simula-out (1+ (current-column)))
|
|
|
956 (setq parlevel (1- parlevel))))
|
|
|
957 (t (setq parlevel (1+ parlevel))))
|
|
|
958 );; nothing - inside comment or string
|
|
|
959 ;; search failed
|
|
|
960 (throw 'simula-out nil)))))))
|
|
|
961
|
|
|
962
|
|
|
963 (defun simula-goto-definition ()
|
|
|
964 "Goto point of definition of variable, procedure or class."
|
|
|
965 (interactive))
|
|
|
966
|
|
|
967
|
|
|
968 (defun simula-expand-stdproc ()
|
|
|
969 (if (or (not simula-abbrev-stdproc) (simula-context))
|
|
|
970 (unexpand-abbrev)
|
|
|
971 (cond
|
|
|
972 ((eq simula-abbrev-stdproc 'upcase) (upcase-word -1))
|
|
|
973 ((eq simula-abbrev-stdproc 'downcase) (downcase-word -1))
|
|
|
974 ((eq simula-abbrev-stdproc 'capitalize) (capitalize-word -1)))))
|
|
|
975
|
|
|
976
|
|
|
977 (defun simula-expand-keyword ()
|
|
|
978 (if (or (not simula-abbrev-keyword) (simula-context))
|
|
|
979 (unexpand-abbrev)
|
|
|
980 (cond
|
|
|
981 ((eq simula-abbrev-keyword 'upcase) (upcase-word -1))
|
|
|
982 ((eq simula-abbrev-keyword 'downcase) (downcase-word -1))
|
|
|
983 ((eq simula-abbrev-keyword 'capitalize) (capitalize-word -1)))))
|
|
|
984
|
|
|
985
|
|
|
986 (defun simula-electric-keyword ()
|
|
|
987 "Expand SIMULA keyword. If it starts the line, reindent."
|
|
|
988 ;; redisplay
|
|
|
989 (let ((show-char (eq this-command 'self-insert-command)))
|
|
|
990 ;; If the abbrev expansion results in reindentation, the user may have
|
|
|
991 ;; to wait some time before the character he typed is displayed
|
|
|
992 ;; (the char causing the expansion is inserted AFTER the hook function
|
|
|
993 ;; is called). This is annoying in case of normal characters.
|
|
|
994 ;; However, if the user pressed a key bound to newline, it is better
|
|
|
995 ;; to have the line inserted after the begin-end match.
|
|
|
996 (if show-char
|
|
|
997 (progn
|
|
|
998 (insert-char last-command-char 1)
|
|
|
999 (sit-for 0)
|
|
|
1000 (backward-char 1)))
|
|
|
1001 (if (let ((where (simula-context))
|
|
|
1002 (case-fold-search t))
|
|
|
1003 (if where
|
|
|
1004 (if (and (eq where 2) (eq (char-syntax (preceding-char)) ?w))
|
|
|
1005 (save-excursion
|
|
|
1006 (backward-word 1)
|
|
|
1007 (not (looking-at "end\\>"))))))
|
|
|
1008 (unexpand-abbrev)
|
|
|
1009 (cond
|
|
|
1010 ((not simula-abbrev-keyword) (unexpand-abbrev))
|
|
|
1011 ((eq simula-abbrev-keyword 'upcase) (upcase-word -1))
|
|
|
1012 ((eq simula-abbrev-keyword 'downcase) (downcase-word -1))
|
|
|
1013 ((eq simula-abbrev-keyword 'capitalize) (capitalize-word -1)))
|
|
|
1014 (let ((pos (- (point-max) (point)))
|
|
|
1015 (case-fold-search t)
|
|
|
1016 )
|
|
|
1017 (condition-case nil
|
|
|
1018 (progn
|
|
|
1019 ;; check if the expanded word is on the beginning of the line.
|
|
|
1020 (if (and (eq (char-syntax (preceding-char)) ?w)
|
|
|
1021 (progn
|
|
|
1022 (backward-word 1)
|
|
|
1023 (if (looking-at "end\\>")
|
|
|
1024 (save-excursion
|
|
|
1025 (simula-backward-up-level 1)
|
|
|
1026 (if (pos-visible-in-window-p)
|
|
|
1027 (sit-for 1)
|
|
|
1028 (message
|
|
|
1029 (concat "Matches "
|
|
|
1030 (buffer-substring
|
|
|
1031 (point)
|
|
|
1032 (+ (point) (window-width))))))))
|
|
|
1033 (skip-chars-backward " \t\f")
|
|
|
1034 (bolp)))
|
|
|
1035 (let ((indent (simula-calculate-indent)))
|
|
|
1036 (if (eq indent (current-indentation))
|
|
|
1037 ()
|
|
|
1038 (delete-horizontal-space)
|
|
|
1039 (indent-to indent)))
|
|
|
1040 (skip-chars-forward " \t\f"))
|
|
|
1041 ;; check for END - blow whistles and ring bells
|
|
|
1042
|
|
|
1043 (goto-char (- (point-max) pos))
|
|
|
1044 (if show-char
|
|
|
1045 (delete-char 1)))
|
|
|
1046 (quit (goto-char (- (point-max) pos))))))))
|
|
|
1047
|
|
|
1048
|
|
|
1049 (defun simula-search-backward (string &optional limit move)
|
|
|
1050 (setq string (concat string "\\|\\<end\\>"))
|
|
|
1051 (let (level)
|
|
|
1052 (catch 'simula-out
|
|
|
1053 (while (re-search-backward string limit move)
|
|
|
1054 (if (simula-context)
|
|
|
1055 ()
|
|
|
1056 (if (looking-at "\\<end\\>")
|
|
|
1057 (progn
|
|
|
1058 (setq level 0)
|
|
|
1059 (while (natnump level)
|
|
|
1060 (re-search-backward "\\<begin\\>\\|\\<end\\>")
|
|
|
1061 (if (simula-context)
|
|
|
1062 ()
|
|
|
1063 (setq level (if (memq (following-char) '(?b ?B))
|
|
|
1064 (1- level)
|
|
|
1065 (1+ level))))))
|
|
|
1066 (throw 'simula-out t)))))))
|
|
|
1067
|
|
|
1068
|
|
|
1069 (defun simula-search-forward (string &optional limit move)
|
|
|
1070 (setq string (concat string "\\|\\<begin\\>"))
|
|
|
1071 (let (level)
|
|
|
1072 (catch 'exit
|
|
|
1073 (while (re-search-forward string limit move)
|
|
|
1074 (goto-char (match-beginning 0))
|
|
|
1075 (if (simula-context)
|
|
|
1076 (goto-char (1- (match-end 0)))
|
|
|
1077 (if (looking-at "\\<begin\\>")
|
|
|
1078 (progn
|
|
|
1079 (goto-char (1- (match-end 0)))
|
|
|
1080 (setq level 0)
|
|
|
1081 (while (natnump level)
|
|
|
1082 (re-search-forward "\\<begin\\>\\|\\<end\\>")
|
|
|
1083 (backward-word 1)
|
|
|
1084 (if (not (simula-context))
|
|
|
1085 (setq level (if (memq (following-char) '(?e ?E))
|
|
|
1086 (1- level)
|
|
|
1087 (1+ level))))
|
|
|
1088 (backward-word -1)))
|
|
|
1089 (goto-char (1- (match-end 0)))
|
|
|
1090 (throw 'exit t)))))))
|
|
|
1091
|
|
|
1092
|
|
|
1093 (defun simula-install-standard-abbrevs ()
|
|
|
1094 "Define Simula keywords, procedures and classes in local abbrev table."
|
|
|
1095 ;; procedure and class names are as of the SIMULA 87 standard.
|
|
|
1096 (interactive)
|
|
|
1097 (mapcar (function (lambda (args)
|
|
|
1098 (apply 'define-abbrev simula-mode-abbrev-table args)))
|
|
|
1099 '(("abs" "Abs" simula-expand-stdproc)
|
|
|
1100 ("accum" "Accum" simula-expand-stdproc)
|
|
|
1101 ("activate" "ACTIVATE" simula-expand-keyword)
|
|
|
1102 ("addepsilon" "AddEpsilon" simula-expand-stdproc)
|
|
|
1103 ("after" "AFTER" simula-expand-keyword)
|
|
|
1104 ("and" "AND" simula-expand-keyword)
|
|
|
1105 ("arccos" "ArcCos" simula-expand-stdproc)
|
|
|
1106 ("arcsin" "ArcSin" simula-expand-stdproc)
|
|
|
1107 ("arctan" "ArcTan" simula-expand-stdproc)
|
|
|
1108 ("arctan2" "ArcTan2" simula-expand-stdproc)
|
|
|
1109 ("array" "ARRAY" simula-expand-keyword)
|
|
|
1110 ("at" "AT" simula-expand-keyword)
|
|
|
1111 ("before" "BEFORE" simula-expand-keyword)
|
|
|
1112 ("begin" "BEGIN" simula-expand-keyword)
|
|
|
1113 ("blanks" "Blanks" simula-expand-stdproc)
|
|
|
1114 ("boolean" "BOOLEAN" simula-expand-keyword)
|
|
|
1115 ("breakoutimage" "BreakOutImage" simula-expand-stdproc)
|
|
|
1116 ("bytefile" "ByteFile" simula-expand-stdproc)
|
|
|
1117 ("call" "Call" simula-expand-stdproc)
|
|
|
1118 ("cancel" "Cancel" simula-expand-stdproc)
|
|
|
1119 ("cardinal" "Cardinal" simula-expand-stdproc)
|
|
|
1120 ("char" "Char" simula-expand-stdproc)
|
|
|
1121 ("character" "CHARACTER" simula-expand-keyword)
|
|
|
1122 ("checkpoint" "CheckPoint" simula-expand-stdproc)
|
|
|
1123 ("class" "CLASS" simula-expand-keyword)
|
|
|
1124 ("clear" "Clear" simula-expand-stdproc)
|
|
|
1125 ("clocktime" "ClockTime" simula-expand-stdproc)
|
|
|
1126 ("close" "Close" simula-expand-stdproc)
|
|
|
1127 ("comment" "COMMENT" simula-expand-keyword)
|
|
|
1128 ("constant" "Constant" simula-expand-stdproc)
|
|
|
1129 ("copy" "Copy" simula-expand-stdproc)
|
|
|
1130 ("cos" "Cos" simula-expand-stdproc)
|
|
|
1131 ("cosh" "CosH" simula-expand-stdproc)
|
|
|
1132 ("cotan" "CoTan" simula-expand-stdproc)
|
|
|
1133 ("cputime" "CpuTime" simula-expand-stdproc)
|
|
|
1134 ("current" "Current" simula-expand-stdproc)
|
|
|
1135 ("datetime" "DateTime" simula-expand-stdproc)
|
|
|
1136 ("decimalmark" "DecimalMark" simula-expand-stdproc)
|
|
|
1137 ("delay" "DELAY" simula-expand-keyword)
|
|
|
1138 ("deleteimage" "DeleteImage" simula-expand-stdproc)
|
|
|
1139 ("detach" "Detach" simula-expand-stdproc)
|
|
|
1140 ("digit" "Digit" simula-expand-stdproc)
|
|
|
1141 ("directbytefile" "DirectByteFile" simula-expand-stdproc)
|
|
|
1142 ("directfile" "DirectFile" simula-expand-stdproc)
|
|
|
1143 ("discrete" "Discrete" simula-expand-stdproc)
|
|
|
1144 ("do" "DO" simula-expand-keyword)
|
|
|
1145 ("downcase" "Downcase" simula-expand-stdproc)
|
|
|
1146 ("draw" "Draw" simula-expand-stdproc)
|
|
|
1147 ("eject" "Eject" simula-expand-stdproc)
|
|
|
1148 ("else" "ELSE" simula-electric-keyword)
|
|
|
1149 ("empty" "Empty" simula-expand-stdproc)
|
|
|
1150 ("end" "END" simula-electric-keyword)
|
|
|
1151 ("endfile" "Endfile" simula-expand-stdproc)
|
|
|
1152 ("entier" "Entier" simula-expand-stdproc)
|
|
|
1153 ("eq" "EQ" simula-expand-keyword)
|
|
|
1154 ("eqv" "EQV" simula-expand-keyword)
|
|
|
1155 ("erlang" "Erlang" simula-expand-stdproc)
|
|
|
1156 ("error" "Error" simula-expand-stdproc)
|
|
|
1157 ("evtime" "EvTime" simula-expand-stdproc)
|
|
|
1158 ("exp" "Exp" simula-expand-stdproc)
|
|
|
1159 ("external" "EXTERNAL" simula-expand-keyword)
|
|
|
1160 ("false" "FALSE" simula-expand-keyword)
|
|
|
1161 ("field" "Field" simula-expand-stdproc)
|
|
|
1162 ("file" "File" simula-expand-stdproc)
|
|
|
1163 ("first" "First" simula-expand-stdproc)
|
|
|
1164 ("follow" "Follow" simula-expand-stdproc)
|
|
|
1165 ("for" "FOR" simula-expand-keyword)
|
|
|
1166 ("ge" "GE" simula-expand-keyword)
|
|
|
1167 ("getchar" "GetChar" simula-expand-stdproc)
|
|
|
1168 ("getfrac" "GetFrac" simula-expand-stdproc)
|
|
|
1169 ("getint" "GetInt" simula-expand-stdproc)
|
|
|
1170 ("getreal" "GetReal" simula-expand-stdproc)
|
|
|
1171 ("go" "GO" simula-expand-keyword)
|
|
|
1172 ("goto" "GOTO" simula-expand-keyword)
|
|
|
1173 ("gt" "GT" simula-expand-keyword)
|
|
|
1174 ("head" "Head" simula-expand-stdproc)
|
|
|
1175 ("hidden" "HIDDEN" simula-expand-keyword)
|
|
|
1176 ("histd" "HistD" simula-expand-stdproc)
|
|
|
1177 ("histo" "Histo" simula-expand-stdproc)
|
|
|
1178 ("hold" "Hold" simula-expand-stdproc)
|
|
|
1179 ("idle" "Idle" simula-expand-stdproc)
|
|
|
1180 ("if" "IF" simula-expand-keyword)
|
|
|
1181 ("image" "Image" simula-expand-stdproc)
|
|
|
1182 ("imagefile" "ImageFile" simula-expand-stdproc)
|
|
|
1183 ("imp" "IMP" simula-expand-keyword)
|
|
|
1184 ("in" "IN" simula-expand-keyword)
|
|
|
1185 ("inbyte" "InByte" simula-expand-stdproc)
|
|
|
1186 ("inbytefile" "InByteFile" simula-expand-stdproc)
|
|
|
1187 ("inchar" "InChar" simula-expand-stdproc)
|
|
|
1188 ("infile" "InFile" simula-expand-stdproc)
|
|
|
1189 ("infrac" "InFrac" simula-expand-stdproc)
|
|
|
1190 ("inimage" "InImage" simula-expand-stdproc)
|
|
|
1191 ("inint" "InInt" simula-expand-stdproc)
|
|
|
1192 ("inner" "INNER" simula-expand-keyword)
|
|
|
1193 ("inreal" "InReal" simula-expand-stdproc)
|
|
|
1194 ("inrecord" "InRecord" simula-expand-stdproc)
|
|
|
1195 ("inspect" "INSPECT" simula-expand-keyword)
|
|
|
1196 ("integer" "INTEGER" simula-expand-keyword)
|
|
|
1197 ("intext" "InText" simula-expand-stdproc)
|
|
|
1198 ("into" "Into" simula-expand-stdproc)
|
|
|
1199 ("is" "IS" simula-expand-keyword)
|
|
|
1200 ("isochar" "ISOChar" simula-expand-stdproc)
|
|
|
1201 ("isopen" "IsOpen" simula-expand-stdproc)
|
|
|
1202 ("isorank" "ISORank" simula-expand-stdproc)
|
|
|
1203 ("label" "LABEL" simula-expand-keyword)
|
|
|
1204 ("last" "Last" simula-expand-stdproc)
|
|
|
1205 ("lastitem" "LastItem" simula-expand-stdproc)
|
|
|
1206 ("lastloc" "LastLoc" simula-expand-stdproc)
|
|
|
1207 ("le" "LE" simula-expand-keyword)
|
|
|
1208 ("length" "Length" simula-expand-stdproc)
|
|
|
1209 ("letter" "Letter" simula-expand-stdproc)
|
|
|
1210 ("line" "Line" simula-expand-stdproc)
|
|
|
1211 ("linear" "Linear" simula-expand-stdproc)
|
|
|
1212 ("linesperpage" "LinesPerPage" simula-expand-stdproc)
|
|
|
1213 ("link" "Link" simula-expand-stdproc)
|
|
|
1214 ("linkage" "Linkage" simula-expand-stdproc)
|
|
|
1215 ("ln" "Ln" simula-expand-stdproc)
|
|
|
1216 ("locate" "Locate" simula-expand-stdproc)
|
|
|
1217 ("location" "Location" simula-expand-stdproc)
|
|
|
1218 ("lock" "Lock" simula-expand-stdproc)
|
|
|
1219 ("locked" "Locked" simula-expand-stdproc)
|
|
|
1220 ("log10" "Log10" simula-expand-stdproc)
|
|
|
1221 ("long" "LONG" simula-expand-keyword)
|
|
|
1222 ("lowcase" "LowCase" simula-expand-stdproc)
|
|
|
1223 ("lowerbound" "LowerBound" simula-expand-stdproc)
|
|
|
1224 ("lowten" "LowTen" simula-expand-stdproc)
|
|
|
1225 ("lt" "LT" simula-expand-keyword)
|
|
|
1226 ("main" "Main" simula-expand-stdproc)
|
|
|
1227 ("max" "Max" simula-expand-stdproc)
|
|
|
1228 ("maxint" "MaxInt" simula-expand-stdproc)
|
|
|
1229 ("maxlongreal" "MaxLongReal" simula-expand-stdproc)
|
|
|
1230 ("maxloc" "MaxLoc" simula-expand-stdproc)
|
|
|
1231 ("maxrank" "MaxRank" simula-expand-stdproc)
|
|
|
1232 ("maxreal" "MaxReal" simula-expand-stdproc)
|
|
|
1233 ("min" "Min" simula-expand-stdproc)
|
|
|
1234 ("minint" "MinInt" simula-expand-stdproc)
|
|
|
1235 ("minlongreal" "MinLongReal" simula-expand-stdproc)
|
|
|
1236 ("minrank" "MinRank" simula-expand-stdproc)
|
|
|
1237 ("minreal" "MinReal" simula-expand-stdproc)
|
|
|
1238 ("mod" "Mod" simula-expand-stdproc)
|
|
|
1239 ("more" "More" simula-expand-stdproc)
|
|
|
1240 ("name" "NAME" simula-expand-keyword)
|
|
|
1241 ("ne" "NE" simula-expand-keyword)
|
|
|
1242 ("negexp" "NegExp" simula-expand-stdproc)
|
|
|
1243 ("new" "NEW" simula-expand-keyword)
|
|
|
1244 ("nextev" "NextEv" simula-expand-stdproc)
|
|
|
1245 ("none" "NONE" simula-expand-keyword)
|
|
|
1246 ("normal" "Normal" simula-expand-stdproc)
|
|
|
1247 ("not" "NOT" simula-expand-keyword)
|
|
|
1248 ("notext" "NOTEXT" simula-expand-keyword)
|
|
|
1249 ("open" "Open" simula-expand-stdproc)
|
|
|
1250 ("or" "OR" simula-expand-keyword)
|
|
|
1251 ("otherwise" "OTHERWISE" simula-electric-keyword)
|
|
|
1252 ("out" "Out" simula-expand-stdproc)
|
|
|
1253 ("outbyte" "OutByte" simula-expand-stdproc)
|
|
|
1254 ("outbytefile" "OutByteFile" simula-expand-stdproc)
|
|
|
1255 ("outchar" "OutChar" simula-expand-stdproc)
|
|
|
1256 ("outfile" "OutFile" simula-expand-stdproc)
|
|
|
1257 ("outfix" "OutFix" simula-expand-stdproc)
|
|
|
1258 ("outfrac" "OutFrac" simula-expand-stdproc)
|
|
|
1259 ("outimage" "OutImage" simula-expand-stdproc)
|
|
|
1260 ("outint" "OutInt" simula-expand-stdproc)
|
|
|
1261 ("outreal" "OutReal" simula-expand-stdproc)
|
|
|
1262 ("outrecord" "OutRecord" simula-expand-stdproc)
|
|
|
1263 ("outtext" "OutText" simula-expand-stdproc)
|
|
|
1264 ("page" "Page" simula-expand-stdproc)
|
|
|
1265 ("passivate" "Passivate" simula-expand-stdproc)
|
|
|
1266 ("poisson" "Poisson" simula-expand-stdproc)
|
|
|
1267 ("pos" "Pos" simula-expand-stdproc)
|
|
|
1268 ("precede" "Precede" simula-expand-stdproc)
|
|
|
1269 ("pred" "Pred" simula-expand-stdproc)
|
|
|
1270 ("prev" "Prev" simula-expand-stdproc)
|
|
|
1271 ("printfile" "PrintFile" simula-expand-stdproc)
|
|
|
1272 ("prior" "PRIOR" simula-expand-keyword)
|
|
|
1273 ("procedure" "PROCEDURE" simula-expand-keyword)
|
|
|
1274 ("process" "Process" simula-expand-stdproc)
|
|
|
1275 ("protected" "PROTECTED" simula-expand-keyword)
|
|
|
1276 ("putchar" "PutChar" simula-expand-stdproc)
|
|
|
1277 ("putfix" "PutFix" simula-expand-stdproc)
|
|
|
1278 ("putfrac" "PutFrac" simula-expand-stdproc)
|
|
|
1279 ("putint" "PutInt" simula-expand-stdproc)
|
|
|
1280 ("putreal" "PutReal" simula-expand-stdproc)
|
|
|
1281 ("qua" "QUA" simula-expand-keyword)
|
|
|
1282 ("randint" "RandInt" simula-expand-stdproc)
|
|
|
1283 ("rank" "Rank" simula-expand-stdproc)
|
|
|
1284 ("reactivate" "REACTIVATE" simula-expand-keyword)
|
|
|
1285 ("real" "REAL" simula-expand-keyword)
|
|
|
1286 ("ref" "REF" simula-expand-keyword)
|
|
|
1287 ("resume" "Resume" simula-expand-stdproc)
|
|
|
1288 ("setaccess" "SetAccess" simula-expand-stdproc)
|
|
|
1289 ("setpos" "SetPos" simula-expand-stdproc)
|
|
|
1290 ("short" "SHORT" simula-expand-keyword)
|
|
|
1291 ("sign" "Sign" simula-expand-stdproc)
|
|
|
1292 ("simset" "SimSet" simula-expand-stdproc)
|
|
|
1293 ("simulaid" "SimulaId" simula-expand-stdproc)
|
|
|
1294 ("simulation" "Simulation" simula-expand-stdproc)
|
|
|
1295 ("sin" "Sin" simula-expand-stdproc)
|
|
|
1296 ("sinh" "SinH" simula-expand-stdproc)
|
|
|
1297 ("sourceline" "SourceLine" simula-expand-stdproc)
|
|
|
1298 ("spacing" "Spacing" simula-expand-stdproc)
|
|
|
1299 ("sqrt" "Sqrt" simula-expand-stdproc)
|
|
|
1300 ("start" "Start" simula-expand-stdproc)
|
|
|
1301 ("step" "STEP" simula-expand-keyword)
|
|
|
1302 ("strip" "Strip" simula-expand-stdproc)
|
|
|
1303 ("sub" "Sub" simula-expand-stdproc)
|
|
|
1304 ("subepsilon" "SubEpsilon" simula-expand-stdproc)
|
|
|
1305 ("suc" "Suc" simula-expand-stdproc)
|
|
|
1306 ("switch" "SWITCH" simula-expand-keyword)
|
|
|
1307 ("sysin" "SysIn" simula-expand-stdproc)
|
|
|
1308 ("sysout" "SysOut" simula-expand-stdproc)
|
|
|
1309 ("tan" "Tan" simula-expand-stdproc)
|
|
|
1310 ("tanh" "TanH" simula-expand-stdproc)
|
|
|
1311 ("terminate_program" "Terminate_Program" simula-expand-stdproc)
|
|
|
1312 ("terminated" "Terminated" simula-expand-stdproc)
|
|
|
1313 ("text" "TEXT" simula-expand-keyword)
|
|
|
1314 ("then" "THEN" simula-electric-keyword)
|
|
|
1315 ("this" "THIS" simula-expand-keyword)
|
|
|
1316 ("time" "Time" simula-expand-stdproc)
|
|
|
1317 ("to" "TO" simula-expand-keyword)
|
|
|
1318 ("true" "TRUE" simula-expand-keyword)
|
|
|
1319 ("uniform" "Uniform" simula-expand-stdproc)
|
|
|
1320 ("unlock" "Unlock" simula-expand-stdproc)
|
|
|
1321 ("until" "UNTIL" simula-expand-keyword)
|
|
|
1322 ("upcase" "Upcase" simula-expand-stdproc)
|
|
|
1323 ("upperbound" "UpperBound" simula-expand-stdproc)
|
|
|
1324 ("value" "VALUE" simula-expand-keyword)
|
|
|
1325 ("virtual" "VIRTUAL" simula-expand-keyword)
|
|
|
1326 ("wait" "Wait" simula-expand-stdproc)
|
|
|
1327 ("when" "WHEN" simula-electric-keyword)
|
|
|
1328 ("while" "WHILE" simula-expand-keyword))))
|
|
|
1329
|
|
|
1330 ;;; simula.el ends here
|
