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613
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1 ;;; cl-macs.el --- Common Lisp extensions for XEmacs Lisp (part four)
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428
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2
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3 ;; Copyright (C) 1993 Free Software Foundation, Inc.
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800
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4 ;; Copyright (C) 2002 Ben Wing.
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428
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5
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6 ;; Author: Dave Gillespie <daveg@synaptics.com>
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7 ;; Version: 2.02
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8 ;; Keywords: extensions
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9
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10 ;; This file is part of XEmacs.
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11
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12 ;; XEmacs is free software; you can redistribute it and/or modify it
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13 ;; under the terms of the GNU General Public License as published by
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14 ;; the Free Software Foundation; either version 2, or (at your option)
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15 ;; any later version.
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16
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17 ;; XEmacs is distributed in the hope that it will be useful, but
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18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ;; General Public License for more details.
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21
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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24 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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25 ;; 02111-1307, USA.
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26
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27 ;;; Synched up with: FSF 19.34.
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28
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29 ;;; Commentary:
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30
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31 ;; These are extensions to Emacs Lisp that provide a degree of
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32 ;; Common Lisp compatibility, beyond what is already built-in
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33 ;; in Emacs Lisp.
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34 ;;
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35 ;; This package was written by Dave Gillespie; it is a complete
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36 ;; rewrite of Cesar Quiroz's original cl.el package of December 1986.
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37 ;;
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38 ;; This package works with Emacs 18, Emacs 19, and Lucid Emacs 19.
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39 ;;
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40 ;; Bug reports, comments, and suggestions are welcome!
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41
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42 ;; This file contains the portions of the Common Lisp extensions
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43 ;; package which should be autoloaded, but need only be present
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44 ;; if the compiler or interpreter is used---this file is not
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45 ;; necessary for executing compiled code.
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46
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47 ;; See cl.el for Change Log.
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48
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49
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50 ;;; Code:
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51
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52 (or (memq 'cl-19 features)
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53 (error "Tried to load `cl-macs' before `cl'!"))
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54
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55
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56 ;;; We define these here so that this file can compile without having
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57 ;;; loaded the cl.el file already.
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58
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59 (defmacro cl-push (x place) (list 'setq place (list 'cons x place)))
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60 (defmacro cl-pop (place)
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61 (list 'car (list 'prog1 place (list 'setq place (list 'cdr place)))))
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62 (defmacro cl-pop2 (place)
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63 (list 'prog1 (list 'car (list 'cdr place))
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64 (list 'setq place (list 'cdr (list 'cdr place)))))
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65 (put 'cl-push 'edebug-form-spec 'edebug-sexps)
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66 (put 'cl-pop 'edebug-form-spec 'edebug-sexps)
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67 (put 'cl-pop2 'edebug-form-spec 'edebug-sexps)
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68
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69 (defvar cl-emacs-type)
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70 (defvar cl-optimize-safety)
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71 (defvar cl-optimize-speed)
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72
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73
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74 ;;; This kludge allows macros which use cl-transform-function-property
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75 ;;; to be called at compile-time.
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76
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77 (require
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78 (progn
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79 (or (fboundp 'defalias) (fset 'defalias 'fset))
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80 (or (fboundp 'cl-transform-function-property)
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81 (defalias 'cl-transform-function-property
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82 #'(lambda (n p f)
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83 (list 'put (list 'quote n) (list 'quote p)
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84 (list 'function (cons 'lambda f))))))
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442
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85 'xemacs))
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428
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86
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87
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88 ;;; Initialization.
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89
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90 (defvar cl-old-bc-file-form nil)
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91
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92 ;; Patch broken Emacs 18 compiler (re top-level macros).
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93 ;; Emacs 19 compiler doesn't need this patch.
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94 ;; Also, undo broken definition of `eql' that uses same bytecode as `eq'.
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95
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96 ;;;###autoload
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97 (defun cl-compile-time-init ()
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98 (setq cl-old-bc-file-form (symbol-function 'byte-compile-file-form))
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99 (or (fboundp 'byte-compile-flush-pending) ; Emacs 19 compiler?
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100 (defalias 'byte-compile-file-form
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101 #'(lambda (form)
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102 (setq form (macroexpand form byte-compile-macro-environment))
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103 (if (eq (car-safe form) 'progn)
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104 (cons 'progn (mapcar 'byte-compile-file-form (cdr form)))
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105 (funcall cl-old-bc-file-form form)))))
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106 (put 'eql 'byte-compile 'cl-byte-compile-compiler-macro)
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107 (run-hooks 'cl-hack-bytecomp-hook))
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108
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109
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110 ;;; Program structure.
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111
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112 ;;;###autoload
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113 (defmacro defun* (name args &rest body)
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114 "(defun* NAME ARGLIST [DOCSTRING] BODY...): define NAME as a function.
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115 Like normal `defun', except ARGLIST allows full Common Lisp conventions,
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116 and BODY is implicitly surrounded by (block NAME ...).
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117
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118 \"Full Common Lisp conventions\" means that:
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119
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120 -- In addition to &optional and &rest, the lambda-list keywords &key,
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121 &allow-other-keys, and &aux are allowed.
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122
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123 -- The format of the arguments to &optional is expanded: As well as simple
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124 variables, they can be lists of the form (VAR [INITFORM [SVAR]]); when
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125 no argument is available for VAR, INITFORM is evaluated (or nil, if
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126 INITFORM is omitted) and stored as VAR's value, and SVAR is bound to t.
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127 If an arguent is available for VAR, and INITFORM is unused, SVAR is
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128 bound to nil.
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129
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130 -- &key specifies keyword arguments. The format of each argument is
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131 VAR || ( { VAR || (KEYWORD VAR) } [INITFORM [SVAR]]) -- #### document me.
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132
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133 -- &allow-other-keys means that if other keyword arguments are given that are
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134 not specifically list in the arg list, they are allowed, rather than an
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135 error being signalled. They can be retrieved with an &rest form.
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136
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137 -- &aux specifies extra bindings, exactly like a `let*' enclosing the body.
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138 The format of each binding is VAR || (VAR [INITFORM]) -- exactly like the
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139 format of `let'/`let*' bindings.
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140 "
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428
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141 (let* ((res (cl-transform-lambda (cons args body) name))
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142 (form (list* 'defun name (cdr res))))
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143 (if (car res) (list 'progn (car res) form) form)))
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144
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145 ;;;###autoload
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146 (defmacro defmacro* (name args &rest body)
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147 "(defmacro* NAME ARGLIST [DOCSTRING] BODY...): define NAME as a macro.
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148 Like normal `defmacro', except ARGLIST allows full Common Lisp conventions,
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872
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149 and BODY is implicitly surrounded by (block NAME ...).
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150
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151 \"Full Common Lisp conventions\" means that:
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152
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153 -- The lambda-list keywords &optional, &rest, &key, &allow-other-keys, and
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154 &aux are allowed, as in `defun*'.
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155
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156 -- Three additional lambda-list keywords are allowed: &body, &whole, and
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157 &environment. #### Document me.
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158
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159 -- The macro arg list syntax allows for \"destructuring\" -- see also
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160 `destructuring-bind', which destructures exactly like `defmacro*', and
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161 `loop', which does a rather different way of destructuring. Anywhere
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162 that a simple argument may appear, and (if following a lambda-list
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163 keyword) a list may not normally appear, an embedded lambda list can be
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164 substituted. (The format of the embedded lambda list is exactly the
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165 same as for a top-level list except that &environment is not allowed.)
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166 When matching this lambda list against a caller-specified argument, that
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167 argument is treated as a list and normal lambda-list processing occurs,
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168 just as if the entire operation were happening at top level.
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169 Furthermore, any lambda list, embedded or top-level, can be dotted at its
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170 end, and this will cause matching with an appropriate dotted list given
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171 as an argument.
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172
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173 See `loop' for practical examples of destructuring, but
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174 keep in mind that `loop' destructuring is somewhat different from macro
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175 destructuring in that
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176
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177 (a) Macro destructuring has extra features in the various lambda-list
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178 keywords, allowing for special processing of a list other than just
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179 simple matching.
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180 (b) Macro destructuring is strict, in that an error is signalled if the
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181 actual structure does not match the expected structure. On the
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182 other hand, loop destructuring is lax -- extra arguments in a list
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183 are ignored, not enough arguments cause the remaining parameters to
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184 receive a value of nil, etc.
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185 "
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428
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186 (let* ((res (cl-transform-lambda (cons args body) name))
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187 (form (list* 'defmacro name (cdr res))))
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188 (if (car res) (list 'progn (car res) form) form)))
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189
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190 ;;;###autoload
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191 (defmacro function* (func)
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192 "(function* SYMBOL-OR-LAMBDA): introduce a function.
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193 Like normal `function', except that if argument is a lambda form, its
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194 ARGLIST allows full Common Lisp conventions."
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195 (if (eq (car-safe func) 'lambda)
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196 (let* ((res (cl-transform-lambda (cdr func) 'cl-none))
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197 (form (list 'function (cons 'lambda (cdr res)))))
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198 (if (car res) (list 'progn (car res) form) form))
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199 (list 'function func)))
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200
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201 (defun cl-transform-function-property (func prop form)
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202 (let ((res (cl-transform-lambda form func)))
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203 (append '(progn) (cdr (cdr (car res)))
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204 (list (list 'put (list 'quote func) (list 'quote prop)
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205 (list 'function (cons 'lambda (cdr res))))))))
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206
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207 (defconst lambda-list-keywords
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208 '(&optional &rest &key &allow-other-keys &aux &whole &body &environment))
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209
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210 (defvar cl-macro-environment nil)
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211 (defvar bind-block) (defvar bind-defs) (defvar bind-enquote)
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212 (defvar bind-inits) (defvar bind-lets) (defvar bind-forms)
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1580
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213 (defvar arglist-visited)
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428
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214
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452
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215 ;; npak@ispras.ru
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216 (defun cl-upcase-arg (arg)
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1580
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217 ;; Changes all non-keyword symbols in `ARG' to symbols
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452
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218 ;; with name in upper case.
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1580
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219 ;; ARG is either symbol or list of symbols or lists
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452
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220 (cond ((symbolp arg)
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1580
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221 ;; Do not upcase &optional, &key etc.
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222 (if (memq arg lambda-list-keywords) arg
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223 (intern (upcase (symbol-name arg)))))
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224 ((listp arg)
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225 (if (memq arg arglist-visited) (error 'circular-list '(arg)))
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226 (cl-push arg arglist-visited)
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227 (let ((arg (copy-list arg)) junk)
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228 ;; Clean the list
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229 (let ((p (last arg))) (if (cdr p) (setcdr p (list '&rest (cdr p)))))
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230 (if (setq junk (cadr (memq '&cl-defs arg)))
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231 (setq arg (delq '&cl-defs (delq junk arg))))
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232 (if (memq '&cl-quote arg)
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233 (setq arg (delq '&cl-quote arg)))
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234 (mapcar 'cl-upcase-arg arg)))
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235 (t arg))) ; Maybe we are in initializer
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452
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236
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237 ;; npak@ispras.ru
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1580
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238 (defun cl-function-arglist (name arglist)
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452
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239 "Returns string with printed representation of arguments list.
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240 Supports Common Lisp lambda lists."
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1580
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241 (if (not (or (listp arglist) (symbolp arglist)))
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242 "Not available"
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243 (setq arglist-visited nil)
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244 (condition-case nil
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245 (prin1-to-string
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246 (cons (if (eq name 'cl-none) 'lambda name)
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247 (cond ((null arglist) nil)
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248 ((listp arglist) (cl-upcase-arg arglist))
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249 ((symbolp arglist)
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250 (cl-upcase-arg (list '&rest arglist)))
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251 (t (wrong-type-argument 'listp arglist)))))
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252 (t "Not available"))))
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253
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452
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254
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428
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255 (defun cl-transform-lambda (form bind-block)
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256 (let* ((args (car form)) (body (cdr form))
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257 (bind-defs nil) (bind-enquote nil)
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258 (bind-inits nil) (bind-lets nil) (bind-forms nil)
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452
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259 (header nil) (simple-args nil)
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260 (doc ""))
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261 ;; Add CL lambda list to documentation. npak@ispras.ru
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1580
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262 (if (and (stringp (car body))
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263 (cdr body))
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452
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264 (setq doc (cl-pop body)))
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1580
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265 (cl-push (concat doc
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266 "\nCommon Lisp lambda list:\n"
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452
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267 " " (cl-function-arglist bind-block args)
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1580
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268 "\n\n")
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452
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269 header)
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270
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428
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271 (while (or (stringp (car body)) (eq (car-safe (car body)) 'interactive))
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272 (cl-push (cl-pop body) header))
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273 (setq args (if (listp args) (copy-list args) (list '&rest args)))
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274 (let ((p (last args))) (if (cdr p) (setcdr p (list '&rest (cdr p)))))
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275 (if (setq bind-defs (cadr (memq '&cl-defs args)))
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276 (setq args (delq '&cl-defs (delq bind-defs args))
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277 bind-defs (cadr bind-defs)))
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278 (if (setq bind-enquote (memq '&cl-quote args))
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279 (setq args (delq '&cl-quote args)))
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280 (if (memq '&whole args) (error "&whole not currently implemented"))
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281 (let* ((p (memq '&environment args)) (v (cadr p)))
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282 (if p (setq args (nconc (delq (car p) (delq v args))
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283 (list '&aux (list v 'cl-macro-environment))))))
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284 (while (and args (symbolp (car args))
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285 (not (memq (car args) '(nil &rest &body &key &aux)))
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286 (not (and (eq (car args) '&optional)
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287 (or bind-defs (consp (cadr args))))))
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288 (cl-push (cl-pop args) simple-args))
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289 (or (eq bind-block 'cl-none)
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290 (setq body (list (list* 'block bind-block body))))
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291 (if (null args)
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292 (list* nil (nreverse simple-args) (nconc (nreverse header) body))
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293 (if (memq '&optional simple-args) (cl-push '&optional args))
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294 (cl-do-arglist args nil (- (length simple-args)
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295 (if (memq '&optional simple-args) 1 0)))
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296 (setq bind-lets (nreverse bind-lets))
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297 (list* (and bind-inits (list* 'eval-when '(compile load eval)
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298 (nreverse bind-inits)))
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299 (nconc (nreverse simple-args)
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300 (list '&rest (car (cl-pop bind-lets))))
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301 (nconc (nreverse header)
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302 (list (nconc (list 'let* bind-lets)
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303 (nreverse bind-forms) body)))))))
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304
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305 (defun cl-do-arglist (args expr &optional num) ; uses bind-*
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306 (if (nlistp args)
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307 (if (or (memq args lambda-list-keywords) (not (symbolp args)))
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308 (error "Invalid argument name: %s" args)
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309 (cl-push (list args expr) bind-lets))
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310 (setq args (copy-list args))
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311 (let ((p (last args))) (if (cdr p) (setcdr p (list '&rest (cdr p)))))
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312 (let ((p (memq '&body args))) (if p (setcar p '&rest)))
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313 (if (memq '&environment args) (error "&environment used incorrectly"))
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314 (let ((save-args args)
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315 (restarg (memq '&rest args))
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316 (safety (if (cl-compiling-file) cl-optimize-safety 3))
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317 (keys nil)
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318 (laterarg nil) (exactarg nil) minarg)
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319 (or num (setq num 0))
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320 (if (listp (cadr restarg))
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321 (setq restarg (gensym "--rest--"))
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322 (setq restarg (cadr restarg)))
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323 (cl-push (list restarg expr) bind-lets)
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324 (if (eq (car args) '&whole)
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325 (cl-push (list (cl-pop2 args) restarg) bind-lets))
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326 (let ((p args))
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327 (setq minarg restarg)
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328 (while (and p (not (memq (car p) lambda-list-keywords)))
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329 (or (eq p args) (setq minarg (list 'cdr minarg)))
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330 (setq p (cdr p)))
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331 (if (memq (car p) '(nil &aux))
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332 (setq minarg (list '= (list 'length restarg)
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333 (length (ldiff args p)))
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334 exactarg (not (eq args p)))))
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335 (while (and args (not (memq (car args) lambda-list-keywords)))
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336 (let ((poparg (list (if (or (cdr args) (not exactarg)) 'pop 'car)
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337 restarg)))
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338 (cl-do-arglist
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339 (cl-pop args)
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340 (if (or laterarg (= safety 0)) poparg
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341 (list 'if minarg poparg
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342 (list 'signal '(quote wrong-number-of-arguments)
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343 (list 'list (and (not (eq bind-block 'cl-none))
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344 (list 'quote bind-block))
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345 (list 'length restarg)))))))
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346 (setq num (1+ num) laterarg t))
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347 (while (and (eq (car args) '&optional) (cl-pop args))
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348 (while (and args (not (memq (car args) lambda-list-keywords)))
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349 (let ((arg (cl-pop args)))
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350 (or (consp arg) (setq arg (list arg)))
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351 (if (cddr arg) (cl-do-arglist (nth 2 arg) (list 'and restarg t)))
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352 (let ((def (if (cdr arg) (nth 1 arg)
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353 (or (car bind-defs)
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354 (nth 1 (assq (car arg) bind-defs)))))
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355 (poparg (list 'pop restarg)))
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356 (and def bind-enquote (setq def (list 'quote def)))
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357 (cl-do-arglist (car arg)
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358 (if def (list 'if restarg poparg def) poparg))
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359 (setq num (1+ num))))))
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360 (if (eq (car args) '&rest)
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361 (let ((arg (cl-pop2 args)))
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362 (if (consp arg) (cl-do-arglist arg restarg)))
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363 (or (eq (car args) '&key) (= safety 0) exactarg
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364 (cl-push (list 'if restarg
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365 (list 'signal '(quote wrong-number-of-arguments)
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366 (list 'list
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367 (and (not (eq bind-block 'cl-none))
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368 (list 'quote bind-block))
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369 (list '+ num (list 'length restarg)))))
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370 bind-forms)))
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371 (while (and (eq (car args) '&key) (cl-pop args))
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372 (while (and args (not (memq (car args) lambda-list-keywords)))
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373 (let ((arg (cl-pop args)))
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374 (or (consp arg) (setq arg (list arg)))
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375 (let* ((karg (if (consp (car arg)) (caar arg)
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376 (intern (format ":%s" (car arg)))))
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377 (varg (if (consp (car arg)) (cadar arg) (car arg)))
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378 (def (if (cdr arg) (cadr arg)
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379 (or (car bind-defs) (cadr (assq varg bind-defs)))))
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380 (look (list 'memq (list 'quote karg) restarg)))
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381 (and def bind-enquote (setq def (list 'quote def)))
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382 (if (cddr arg)
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383 (let* ((temp (or (nth 2 arg) (gensym)))
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384 (val (list 'car (list 'cdr temp))))
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385 (cl-do-arglist temp look)
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386 (cl-do-arglist varg
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387 (list 'if temp
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388 (list 'prog1 val (list 'setq temp t))
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389 def)))
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390 (cl-do-arglist
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391 varg
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392 (list 'car
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393 (list 'cdr
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394 (if (null def)
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395 look
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396 (list 'or look
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397 (if (eq (cl-const-expr-p def) t)
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398 (list
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399 'quote
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400 (list nil (cl-const-expr-val def)))
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401 (list 'list nil def))))))))
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402 (cl-push karg keys)
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403 (if (= (aref (symbol-name karg) 0) ?:)
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404 (progn (set karg karg)
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405 (cl-push (list 'setq karg (list 'quote karg))
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406 bind-inits)))))))
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407 (setq keys (nreverse keys))
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408 (or (and (eq (car args) '&allow-other-keys) (cl-pop args))
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409 (null keys) (= safety 0)
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410 (let* ((var (gensym "--keys--"))
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411 (allow '(:allow-other-keys))
|
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412 (check (list
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413 'while var
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414 (list
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415 'cond
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416 (list (list 'memq (list 'car var)
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417 (list 'quote (append keys allow)))
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418 (list 'setq var (list 'cdr (list 'cdr var))))
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419 (list (list 'car
|
|
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420 (list 'cdr
|
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421 (list 'memq (cons 'quote allow)
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422 restarg)))
|
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423 (list 'setq var nil))
|
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|
424 (list t
|
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|
425 (list
|
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|
426 'error
|
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427 (format "Keyword argument %%s not one of %s"
|
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428 keys)
|
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|
429 (list 'car var)))))))
|
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|
430 (cl-push (list 'let (list (list var restarg)) check) bind-forms)))
|
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431 (while (and (eq (car args) '&aux) (cl-pop args))
|
|
|
432 (while (and args (not (memq (car args) lambda-list-keywords)))
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433 (if (consp (car args))
|
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|
434 (if (and bind-enquote (cadar args))
|
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|
435 (cl-do-arglist (caar args)
|
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|
436 (list 'quote (cadr (cl-pop args))))
|
|
|
437 (cl-do-arglist (caar args) (cadr (cl-pop args))))
|
|
|
438 (cl-do-arglist (cl-pop args) nil))))
|
|
|
439 (if args (error "Malformed argument list %s" save-args)))))
|
|
|
440
|
|
|
441 (defun cl-arglist-args (args)
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|
|
442 (if (nlistp args) (list args)
|
|
|
443 (let ((res nil) (kind nil) arg)
|
|
|
444 (while (consp args)
|
|
|
445 (setq arg (cl-pop args))
|
|
|
446 (if (memq arg lambda-list-keywords) (setq kind arg)
|
|
|
447 (if (eq arg '&cl-defs) (cl-pop args)
|
|
|
448 (and (consp arg) kind (setq arg (car arg)))
|
|
|
449 (and (consp arg) (cdr arg) (eq kind '&key) (setq arg (cadr arg)))
|
|
|
450 (setq res (nconc res (cl-arglist-args arg))))))
|
|
|
451 (nconc res (and args (list args))))))
|
|
|
452
|
|
|
453 ;;;###autoload
|
|
|
454 (defmacro destructuring-bind (args expr &rest body)
|
|
872
|
455 "Bind the arguments in ARGS to EXPR then eval BODY.
|
|
|
456 This is similar to `let' but it does \"destructuring\", in that it matches
|
|
|
457 the structure of ARGS to the structure of EXPR and binds corresponding
|
|
|
458 arguments in ARGS to their values in EXPR. The format of ARGS, and the
|
|
|
459 way the destructuring works, is exactly like the destructuring that occurs
|
|
|
460 in `defmacro*'; see that for more information.
|
|
|
461
|
|
|
462 An alternative means of destructuring is using the `loop' macro. `loop'
|
|
|
463 gives practical examples of destructuring. `defmacro*' describes the
|
|
|
464 differences between loop and macro-style destructuring.
|
|
|
465
|
|
|
466 You can rewrite a call to (destructuring-bind ARGS EXPR &rest BODY) using
|
|
|
467 `loop', approximately like this:
|
|
|
468
|
|
|
469 (loop for ARGS = EXPR
|
|
|
470 return (progn BODY))
|
|
|
471
|
|
|
472 I say \"approximately\" because the destructuring works in a somewhat
|
|
|
473 different fashion, although for most reasonably simple constructs the
|
|
|
474 results will be the same."
|
|
428
|
475 (let* ((bind-lets nil) (bind-forms nil) (bind-inits nil)
|
|
|
476 (bind-defs nil) (bind-block 'cl-none))
|
|
|
477 (cl-do-arglist (or args '(&aux)) expr)
|
|
|
478 (append '(progn) bind-inits
|
|
|
479 (list (nconc (list 'let* (nreverse bind-lets))
|
|
|
480 (nreverse bind-forms) body)))))
|
|
|
481
|
|
|
482
|
|
|
483 ;;; The `eval-when' form.
|
|
|
484
|
|
|
485 (defvar cl-not-toplevel nil)
|
|
|
486
|
|
|
487 ;;;###autoload
|
|
|
488 (defmacro eval-when (when &rest body)
|
|
|
489 "(eval-when (WHEN...) BODY...): control when BODY is evaluated.
|
|
|
490 If `compile' is in WHEN, BODY is evaluated when compiled at top-level.
|
|
|
491 If `load' is in WHEN, BODY is evaluated when loaded after top-level compile.
|
|
|
492 If `eval' is in WHEN, BODY is evaluated when interpreted or at non-top-level."
|
|
|
493 (if (and (fboundp 'cl-compiling-file) (cl-compiling-file)
|
|
|
494 (not cl-not-toplevel) (not (boundp 'for-effect))) ; horrible kludge
|
|
|
495 (let ((comp (or (memq 'compile when) (memq ':compile-toplevel when)))
|
|
|
496 (cl-not-toplevel t))
|
|
|
497 (if (or (memq 'load when) (memq ':load-toplevel when))
|
|
|
498 (if comp (cons 'progn (mapcar 'cl-compile-time-too body))
|
|
|
499 (list* 'if nil nil body))
|
|
|
500 (progn (if comp (eval (cons 'progn body))) nil)))
|
|
|
501 (and (or (memq 'eval when) (memq ':execute when))
|
|
|
502 (cons 'progn body))))
|
|
|
503
|
|
|
504 (defun cl-compile-time-too (form)
|
|
|
505 (or (and (symbolp (car-safe form)) (get (car-safe form) 'byte-hunk-handler))
|
|
|
506 (setq form (macroexpand
|
|
|
507 form (cons '(eval-when) byte-compile-macro-environment))))
|
|
|
508 (cond ((eq (car-safe form) 'progn)
|
|
|
509 (cons 'progn (mapcar 'cl-compile-time-too (cdr form))))
|
|
|
510 ((eq (car-safe form) 'eval-when)
|
|
|
511 (let ((when (nth 1 form)))
|
|
|
512 (if (or (memq 'eval when) (memq ':execute when))
|
|
|
513 (list* 'eval-when (cons 'compile when) (cddr form))
|
|
|
514 form)))
|
|
|
515 (t (eval form) form)))
|
|
|
516
|
|
|
517 (or (and (fboundp 'eval-when-compile)
|
|
|
518 (not (eq (car-safe (symbol-function 'eval-when-compile)) 'autoload)))
|
|
|
519 (eval '(defmacro eval-when-compile (&rest body)
|
|
|
520 "Like `progn', but evaluates the body at compile time.
|
|
|
521 The result of the body appears to the compiler as a quoted constant."
|
|
|
522 (list 'quote (eval (cons 'progn body))))))
|
|
|
523
|
|
|
524 ;;;###autoload
|
|
|
525 (defmacro load-time-value (form &optional read-only)
|
|
|
526 "Like `progn', but evaluates the body at load time.
|
|
|
527 The result of the body appears to the compiler as a quoted constant."
|
|
|
528 (if (cl-compiling-file)
|
|
|
529 (let* ((temp (gentemp "--cl-load-time--"))
|
|
|
530 (set (list 'set (list 'quote temp) form)))
|
|
|
531 (if (and (fboundp 'byte-compile-file-form-defmumble)
|
|
|
532 (boundp 'this-kind) (boundp 'that-one))
|
|
|
533 (fset 'byte-compile-file-form
|
|
|
534 (list 'lambda '(form)
|
|
|
535 (list 'fset '(quote byte-compile-file-form)
|
|
|
536 (list 'quote
|
|
|
537 (symbol-function 'byte-compile-file-form)))
|
|
|
538 (list 'byte-compile-file-form (list 'quote set))
|
|
|
539 '(byte-compile-file-form form)))
|
|
|
540 ;; XEmacs change
|
|
|
541 (print set (symbol-value ;;'outbuffer
|
|
|
542 'byte-compile-output-buffer
|
|
|
543 )))
|
|
|
544 (list 'symbol-value (list 'quote temp)))
|
|
|
545 (list 'quote (eval form))))
|
|
|
546
|
|
|
547
|
|
|
548 ;;; Conditional control structures.
|
|
|
549
|
|
|
550 ;;;###autoload
|
|
|
551 (defmacro case (expr &rest clauses)
|
|
|
552 "(case EXPR CLAUSES...): evals EXPR, chooses from CLAUSES on that value.
|
|
|
553 Each clause looks like (KEYLIST BODY...). EXPR is evaluated and compared
|
|
|
554 against each key in each KEYLIST; the corresponding BODY is evaluated.
|
|
|
555 If no clause succeeds, case returns nil. A single atom may be used in
|
|
|
556 place of a KEYLIST of one atom. A KEYLIST of `t' or `otherwise' is
|
|
|
557 allowed only in the final clause, and matches if no other keys match.
|
|
|
558 Key values are compared by `eql'."
|
|
|
559 (let* ((temp (if (cl-simple-expr-p expr 3) expr (gensym)))
|
|
|
560 (head-list nil)
|
|
|
561 (last-clause (car (last clauses)))
|
|
|
562 (body (cons
|
|
|
563 'cond
|
|
|
564 (mapcar
|
|
|
565 #'(lambda (c)
|
|
|
566 (cons (cond ((memq (car c) '(t otherwise))
|
|
|
567 (or (eq c last-clause)
|
|
|
568 (error
|
|
|
569 "`%s' is allowed only as the last case clause"
|
|
|
570 (car c)))
|
|
|
571 t)
|
|
|
572 ((eq (car c) 'ecase-error-flag)
|
|
|
573 (list 'error "ecase failed: %s, %s"
|
|
|
574 temp (list 'quote (reverse head-list))))
|
|
|
575 ((listp (car c))
|
|
|
576 (setq head-list (append (car c) head-list))
|
|
|
577 (list 'member* temp (list 'quote (car c))))
|
|
|
578 (t
|
|
|
579 (if (memq (car c) head-list)
|
|
|
580 (error "Duplicate key in case: %s"
|
|
|
581 (car c)))
|
|
|
582 (cl-push (car c) head-list)
|
|
|
583 (list 'eql temp (list 'quote (car c)))))
|
|
|
584 (or (cdr c) '(nil))))
|
|
|
585 clauses))))
|
|
|
586 (if (eq temp expr) body
|
|
|
587 (list 'let (list (list temp expr)) body))))
|
|
|
588
|
|
|
589 ;; #### CL standard also requires `ccase', which signals a continuable
|
|
|
590 ;; error (`cerror' in XEmacs). However, I don't think it buys us
|
|
|
591 ;; anything to introduce it, as there is probably much more CL stuff
|
|
|
592 ;; missing, and the feature is not essential. --hniksic
|
|
|
593
|
|
|
594 ;;;###autoload
|
|
|
595 (defmacro ecase (expr &rest clauses)
|
|
|
596 "(ecase EXPR CLAUSES...): like `case', but error if no case fits.
|
|
|
597 `otherwise'-clauses are not allowed."
|
|
|
598 (let ((disallowed (or (assq t clauses)
|
|
|
599 (assq 'otherwise clauses))))
|
|
|
600 (if disallowed
|
|
|
601 (error "`%s' is not allowed in ecase" (car disallowed))))
|
|
|
602 (list* 'case expr (append clauses '((ecase-error-flag)))))
|
|
|
603
|
|
|
604 ;;;###autoload
|
|
|
605 (defmacro typecase (expr &rest clauses)
|
|
|
606 "(typecase EXPR CLAUSES...): evals EXPR, chooses from CLAUSES on that value.
|
|
|
607 Each clause looks like (TYPE BODY...). EXPR is evaluated and, if it
|
|
|
608 satisfies TYPE, the corresponding BODY is evaluated. If no clause succeeds,
|
|
|
609 typecase returns nil. A TYPE of `t' or `otherwise' is allowed only in the
|
|
|
610 final clause, and matches if no other keys match."
|
|
|
611 (let* ((temp (if (cl-simple-expr-p expr 3) expr (gensym)))
|
|
|
612 (type-list nil)
|
|
|
613 (body (cons
|
|
|
614 'cond
|
|
|
615 (mapcar
|
|
|
616 #'(lambda (c)
|
|
|
617 (cons (cond ((eq (car c) 'otherwise) t)
|
|
|
618 ((eq (car c) 'ecase-error-flag)
|
|
|
619 (list 'error "etypecase failed: %s, %s"
|
|
|
620 temp (list 'quote (reverse type-list))))
|
|
|
621 (t
|
|
|
622 (cl-push (car c) type-list)
|
|
|
623 (cl-make-type-test temp (car c))))
|
|
|
624 (or (cdr c) '(nil))))
|
|
|
625 clauses))))
|
|
|
626 (if (eq temp expr) body
|
|
|
627 (list 'let (list (list temp expr)) body))))
|
|
|
628
|
|
|
629 ;;;###autoload
|
|
|
630 (defmacro etypecase (expr &rest clauses)
|
|
|
631 "(etypecase EXPR CLAUSES...): like `typecase', but error if no case fits.
|
|
|
632 `otherwise'-clauses are not allowed."
|
|
|
633 (list* 'typecase expr (append clauses '((ecase-error-flag)))))
|
|
|
634
|
|
|
635
|
|
|
636 ;;; Blocks and exits.
|
|
|
637
|
|
|
638 ;;;###autoload
|
|
|
639 (defmacro block (name &rest body)
|
|
|
640 "(block NAME BODY...): define a lexically-scoped block named NAME.
|
|
|
641 NAME may be any symbol. Code inside the BODY forms can call `return-from'
|
|
|
642 to jump prematurely out of the block. This differs from `catch' and `throw'
|
|
|
643 in two respects: First, the NAME is an unevaluated symbol rather than a
|
|
|
644 quoted symbol or other form; and second, NAME is lexically rather than
|
|
|
645 dynamically scoped: Only references to it within BODY will work. These
|
|
|
646 references may appear inside macro expansions, but not inside functions
|
|
|
647 called from BODY."
|
|
|
648 (if (cl-safe-expr-p (cons 'progn body)) (cons 'progn body)
|
|
|
649 (list 'cl-block-wrapper
|
|
|
650 (list* 'catch (list 'quote (intern (format "--cl-block-%s--" name)))
|
|
|
651 body))))
|
|
|
652
|
|
|
653 (defvar cl-active-block-names nil)
|
|
|
654
|
|
|
655 (put 'cl-block-wrapper 'byte-compile 'cl-byte-compile-block)
|
|
|
656 (defun cl-byte-compile-block (cl-form)
|
|
|
657 (if (fboundp 'byte-compile-form-do-effect) ; Check for optimizing compiler
|
|
|
658 (progn
|
|
|
659 (let* ((cl-entry (cons (nth 1 (nth 1 (nth 1 cl-form))) nil))
|
|
|
660 (cl-active-block-names (cons cl-entry cl-active-block-names))
|
|
|
661 (cl-body (byte-compile-top-level
|
|
|
662 (cons 'progn (cddr (nth 1 cl-form))))))
|
|
|
663 (if (cdr cl-entry)
|
|
|
664 (byte-compile-form (list 'catch (nth 1 (nth 1 cl-form)) cl-body))
|
|
|
665 (byte-compile-form cl-body))))
|
|
|
666 (byte-compile-form (nth 1 cl-form))))
|
|
|
667
|
|
|
668 (put 'cl-block-throw 'byte-compile 'cl-byte-compile-throw)
|
|
|
669 (defun cl-byte-compile-throw (cl-form)
|
|
|
670 (let ((cl-found (assq (nth 1 (nth 1 cl-form)) cl-active-block-names)))
|
|
|
671 (if cl-found (setcdr cl-found t)))
|
|
|
672 (byte-compile-normal-call (cons 'throw (cdr cl-form))))
|
|
|
673
|
|
|
674 ;;;###autoload
|
|
|
675 (defmacro return (&optional res)
|
|
|
676 "(return [RESULT]): return from the block named nil.
|
|
|
677 This is equivalent to `(return-from nil RESULT)'."
|
|
|
678 (list 'return-from nil res))
|
|
|
679
|
|
|
680 ;;;###autoload
|
|
|
681 (defmacro return-from (name &optional res)
|
|
|
682 "(return-from NAME [RESULT]): return from the block named NAME.
|
|
|
683 This jumps out to the innermost enclosing `(block NAME ...)' form,
|
|
|
684 returning RESULT from that form (or nil if RESULT is omitted).
|
|
|
685 This is compatible with Common Lisp, but note that `defun' and
|
|
|
686 `defmacro' do not create implicit blocks as they do in Common Lisp."
|
|
|
687 (let ((name2 (intern (format "--cl-block-%s--" name))))
|
|
|
688 (list 'cl-block-throw (list 'quote name2) res)))
|
|
|
689
|
|
|
690
|
|
|
691 ;;; The "loop" macro.
|
|
|
692
|
|
|
693 (defvar args) (defvar loop-accum-var) (defvar loop-accum-vars)
|
|
|
694 (defvar loop-bindings) (defvar loop-body) (defvar loop-destr-temps)
|
|
|
695 (defvar loop-finally) (defvar loop-finish-flag) (defvar loop-first-flag)
|
|
|
696 (defvar loop-initially) (defvar loop-map-form) (defvar loop-name)
|
|
|
697 (defvar loop-result) (defvar loop-result-explicit)
|
|
|
698 (defvar loop-result-var) (defvar loop-steps) (defvar loop-symbol-macs)
|
|
|
699
|
|
|
700 ;;;###autoload
|
|
|
701 (defmacro loop (&rest args)
|
|
|
702 "(loop CLAUSE...): The Common Lisp `loop' macro.
|
|
800
|
703
|
|
|
704 The loop macro consists of a series of clauses, which do things like
|
|
|
705 iterate variables, set conditions for exiting the loop, accumulating values
|
|
|
706 to be returned as the return value of the loop, and executing arbitrary
|
|
|
707 blocks of code. Each clause is proceed in turn, and the loop executes its
|
|
|
708 body repeatedly until an exit condition is hit.
|
|
|
709
|
|
|
710 It's important to understand that loop clauses such as `for' and `while',
|
|
|
711 which look like loop-establishing constructs, don't actually *establish* a
|
|
|
712 loop\; the looping is established by the `loop' clause itself, which will
|
|
|
713 repeatedly process its body until told to stop. `while' merely establishes
|
|
|
714 a condition which, when true, causes the loop to finish, and `for' sets a
|
|
|
715 variable to different values on each iteration (e.g. successive elements of
|
|
|
716 a list) and sets an exit condition when there are no more values. This
|
|
|
717 means, for example, that if two `for' clauses appear, you don't get two
|
|
|
718 nested loops, but instead two variables that are stepped in parallel, and
|
|
|
719 two exit conditions, either of which, if triggered, will cause the loop to
|
|
|
720 end. Similarly for a loop with a `for' and a `while' clause. For example:
|
|
|
721
|
|
|
722 \(loop
|
|
|
723 for x in list
|
|
|
724 while x
|
|
|
725 do ...)
|
|
|
726
|
|
|
727 In each successive iteration, X is set to the next element of the list. If
|
|
|
728 there are no more elements, or if any element is nil (the `while' clause),
|
|
|
729 the loop exits. Otherwise, the block of code following `do' is executed.)
|
|
|
730
|
|
|
731 This example also shows that some clauses establish variable bindings --
|
|
|
732 essentially like a `let' binding -- and that following clauses can
|
|
|
733 reference these variables. Furthermore, the entire loop is surrounded by a
|
|
|
734 block named nil (unless the `named' clause is given), so you can return
|
|
|
735 from the loop using the macro `return'. (The other way to exit the loop is
|
|
|
736 through the macro `loop-finish'. The difference is that some loop clauses
|
|
|
737 establish or accumulate a value to be returned, and `loop-finish' returns
|
|
|
738 this. `return', however, can only return an explicitly-specified value.
|
|
|
739 NOTE CAREFULLY: There is a loop clause called `return' as well as a
|
|
|
740 standard Lisp macro called `return'. Normally they work similarly\; but if
|
|
|
741 you give the loop a name with `named', you will need to use the macro
|
|
|
742 `return-from'.)
|
|
|
743
|
|
|
744 Another extremely useful feature of loops is called \"destructuring\". If,
|
|
|
745 in place of VAR, a list (possibly dotted, possibly a tree of arbitary
|
|
|
746 complexity) is given, the value to be assigned is assumed to have a similar
|
|
|
747 structure to the list given, and variables in the list will be matched up
|
|
|
748 with corresponding elements in the structure. For example:
|
|
|
749
|
|
|
750 \(loop
|
|
|
751 for (x y) in '((foo 1) (bar 2) (baz 3))
|
|
|
752 do (puthash x y some-hash-table))
|
|
|
753
|
|
|
754 will add three elements to a hash table, mapping foo -> 1, bar -> 2, and
|
|
|
755 baz -> 3. As other examples, you can conveniently process alists using
|
|
|
756
|
|
|
757 \(loop for (x . y) in alist do ...)
|
|
|
758
|
|
|
759 and plists using
|
|
|
760
|
|
|
761 \(loop for (x y) on plist by #'cddr do ...)
|
|
|
762
|
|
|
763 Destructuring is forgiving in that mismatches in the number of elements on
|
|
|
764 either size will be handled gracefully, either by ignoring or initializing
|
|
1123
|
765 to nil. Destructuring is extremely powerful, and is probably the single
|
|
|
766 most useful feature of `loop'.
|
|
|
767
|
|
|
768 Other useful features of loops are iterating over hash-tables, collecting values into lists, and being able to modify lists in-place as you iterate over them. As an example of the first two,
|
|
|
769
|
|
|
770 \(loop for x being the hash-key in table using (hash-value y)
|
|
|
771 collect (cons x y))
|
|
|
772
|
|
|
773 converts hash-table TABLE to an alist. (What `collect' actually does is
|
|
|
774 push its value onto the end of an internal list and establish this list as
|
|
|
775 the default return value of the loop. See below for more information.)
|
|
|
776
|
|
|
777 An example of in-place modification is
|
|
|
778
|
|
|
779 \(setq foo '(1 3 5))
|
|
|
780 \(loop for x in-ref foo do
|
|
|
781 (setf x (* x x)))
|
|
|
782
|
|
|
783 after which foo will contain '(1 9 25).
|
|
800
|
784
|
|
|
785 If you don't understand how a particular loop clause works, create an
|
|
|
786 example and use `macroexpand-sexp' to expand the macro.
|
|
|
787
|
|
428
|
788 Valid clauses are:
|
|
800
|
789
|
|
|
790 \(NOTE: Keywords in lowercase\; slashes separate different possibilities
|
|
|
791 for keywords, some of which are synonymous\; brackets indicate optional
|
|
|
792 parts of the clause. In all of the clauses with `being', the word `being',
|
|
|
793 the words `each' or `the', and the difference between singular and plural
|
|
|
794 keywords are all just syntactic sugar. Stylistically, you should write
|
|
|
795 either `being each foo' or `being the foos'.)
|
|
|
796
|
|
|
797 for VAR from/upfrom/downfrom NUM1 to/upto/downto/above/below NUM2 [by NUMSTEP]
|
|
|
798 Step VAR across numbers. `upfrom', `upto', and `below' explicitly
|
|
|
799 indicate upward stepping\; `downfrom', `downto', and `above' explicitly
|
|
|
800 indicate downward stepping. (If none of these is given, the default is
|
|
|
801 upward.) `to', `upto', and `downto' cause stepping to include NUM2 as
|
|
|
802 the last iteration, while `above' and `below' stop just before reaching
|
|
|
803 NUM2. `by' can be given to indicate a stepping increment other than 1.
|
|
|
804
|
|
|
805 for VAR in LIST [by FUNC]
|
|
|
806 Step VAR over elements of a LIST. FUNC specifies how to get successive
|
|
|
807 sublists and defaults to `cdr'.
|
|
|
808
|
|
|
809 for VAR on LIST [by FUNC]
|
|
|
810 Step VAR over tails of a LIST. FUNC specifies how to get successive
|
|
|
811 sublists and defaults to `cdr'.
|
|
|
812
|
|
|
813 for VAR in-ref LIST [by FUNC]
|
|
|
814 Step VAR over elements of a LIST, like `for ... in', except the VAR is
|
|
|
815 bound using `symbol-macrolet' instead of `let'. In essence, VAR is set
|
|
|
816 to a \"reference\" to the list element instead of the element itself\;
|
|
|
817 this us, you can destructively modify the list using `setf' on VAR, and
|
|
|
818 any changes to the list will \"magically\" reflect themselves in
|
|
|
819 subsequent uses of VAR.
|
|
|
820
|
|
|
821 for VAR = INIT [then EXPR]
|
|
|
822 Set VAR on each iteration of the loop. If only INIT is given, use it
|
|
|
823 on each iteration. Otherwise, use INIT on the first iteration and EXPR
|
|
|
824 on subsequent ones.
|
|
|
825
|
|
|
826 for VAR across/across-ref ARRAY
|
|
|
827 Step VAR across a sequence other than a list (string, vector, bit
|
|
|
828 vector). If `across-ref' is given, VAR is bound using
|
|
|
829 `symbol-macrolet' instead of `let' -- see above.
|
|
|
830
|
|
|
831 for VAR being each/the element/elements in/of/in-ref/of-ref SEQUENCE [using (index INDEX-VAR)]
|
|
|
832 Step VAR across any sequence. A variable can be specified with a
|
|
|
833 `using' phrase to receive the index, starting at 0. If `in-ref' or
|
|
|
834 `of-ref' is given, VAR is bound using `symbol-macrolet' instead of
|
|
|
835 `let' -- see above.
|
|
|
836
|
|
|
837 for VAR being each/the hash-key/hash-keys/hash-value/hash-values in/of HASH-TABLE [using (hash-value/hash-key OTHER-VAR)]
|
|
|
838
|
|
|
839 for VAR being each/the hash-key/hash-keys/hash-value/hash-values in/of HASH-TABLE [using (hash-value/hash-key OTHER-VAR)]
|
|
|
840 Map VAR over a hash table. The various keywords are synonymous except
|
|
|
841 those that distinguish between keys and values. The `using' phrase is
|
|
|
842 optional and allows both key and value to be bound.
|
|
|
843
|
|
|
844 for VAR being each/the symbol/present-symbol/external-symbol/symbols/present-symbols/external-symbols in/of OBARRAY
|
|
|
845 Map VAR over the symbols in an obarray. All symbol keywords are
|
|
|
846 currently synonymous.
|
|
|
847
|
|
|
848 for VAR being each/the extent/extents [in/of BUFFER-OR-STRING] [from POS] [to POS]
|
|
|
849 Map VAR over the extents in a buffer or string, defaulting to the
|
|
|
850 current buffer, the beginning and the end, respectively.
|
|
|
851
|
|
|
852 for VAR being each/the interval/intervals [in/of BUFFER-OR-STRING] [property PROPERTY] [from POS] [to POS]
|
|
|
853 Map VAR over the intervals without property change in a buffer or
|
|
|
854 string, defaulting to the current buffer, the beginning and the end,
|
|
|
855 respectively. If PROPERTY is given, iteration occurs using
|
|
|
856 `next-single-property-change'\; otherwise, using
|
|
|
857 `next-property-change'.
|
|
|
858
|
|
|
859 for VAR being each/the window/windows [in/of FRAME]
|
|
|
860 Step VAR over the windows in FRAME, defaulting to the selected frame.
|
|
|
861
|
|
|
862 for VAR being each/the frame/frames
|
|
|
863 Step VAR over all frames.
|
|
|
864
|
|
|
865 for VAR being each/the buffer/buffers [by FUNC]
|
|
|
866 Step VAR over all buffers. This is actually equivalent to
|
|
|
867 `for VAR in (buffer-list) [by FUNC]'.
|
|
|
868
|
|
|
869 for VAR being each/the key-code/key-codes/key-seq/key-seqs/key-binding/key-bindings in KEYMAP [using (key-code/key-codes/key-seq/key-seqs/key-binding/key-bindings OTHER-VAR)]
|
|
|
870 Map VAR over the entries in a keymap. Keyword `key-seq' causes
|
|
|
871 recursive mapping over prefix keymaps occurring in the keymap, with VAR
|
|
|
872 getting the built-up sequence (a vector). Otherwise, mapping does not
|
|
|
873 occur recursively. `key-code' and `key-seq' refer to what is bound
|
|
|
874 (second argument of `define-key'), and `key-binding' what it's bound to
|
|
|
875 (third argument of `define-key').
|
|
|
876
|
|
|
877 as VAR ...
|
|
|
878 `as' is a synonym for `for'.
|
|
|
879
|
|
|
880 and VAR ...
|
|
|
881 `and' clauses have the same syntax as `for' clauses except that the
|
|
|
882 variables in the clause are bound in parallel with a preceding
|
|
|
883 `and'/`for' clause instead of in series.
|
|
|
884
|
|
|
885 with VAR = INIT
|
|
|
886 Set VAR to INIT once, before doing any iterations.
|
|
|
887
|
|
|
888 repeat NUM
|
|
|
889 Exit the loop if more than NUM iterations have occurred.
|
|
|
890
|
|
|
891 while COND
|
|
|
892 Exit the loop if COND isn't true.
|
|
|
893
|
|
|
894 until COND
|
|
|
895 Exit the loop if COND is true.
|
|
|
896
|
|
|
897 collect EXPR [into VAR]
|
|
|
898 Push EXPR onto the end of a list of values -- stored either in VAR or a
|
|
|
899 temporary variable that will be returned as the return value of the
|
|
|
900 loop if it terminates through an exit condition or a call to
|
|
|
901 `loop-finish'.
|
|
|
902
|
|
|
903 append EXPR [into VAR]
|
|
|
904 Append EXPR (a list) onto the end of a list of values, like `collect'.
|
|
|
905
|
|
|
906 nconc EXPR [into VAR]
|
|
|
907 Nconc EXPR (a list) onto the end of a list of values, like `collect'.
|
|
|
908
|
|
|
909 concat EXPR [into VAR]
|
|
|
910 Concatenate EXPR (a string) onto the end of a string of values, like
|
|
|
911 `collect'.
|
|
|
912
|
|
|
913 vconcat EXPR [into VAR]
|
|
|
914 Concatenate EXPR (a vector) onto the end of a vector of values, like
|
|
|
915 `collect'.
|
|
|
916
|
|
|
917 bvconcat EXPR [into VAR]
|
|
|
918 Concatenate EXPR (a bit vector) onto the end of a bit vector of values,
|
|
|
919 like `collect'.
|
|
|
920
|
|
|
921 sum EXPR [into VAR]
|
|
|
922 Add EXPR to a value, like `collect'.
|
|
|
923
|
|
|
924 count EXPR [into VAR]
|
|
|
925 If EXPR is true, increment a value by 1, like `collect'.
|
|
|
926
|
|
|
927 maximize EXPR [into VAR]
|
|
|
928 IF EXPR is greater than a value, replace the value with EXPR, like
|
|
|
929 `collect'.
|
|
|
930
|
|
|
931 minimize EXPR [into VAR]
|
|
|
932 IF EXPR is less than a value, replace the value with EXPR, like
|
|
|
933 `collect'.
|
|
|
934
|
|
|
935 always COND
|
|
|
936 If COND is true, continue the loop and set the loop return value (the
|
|
|
937 same value that's manipulated by `collect' and friends and is returned
|
|
|
938 by a normal loop exit or an exit using `loop-finish') to t\; otherwise,
|
|
|
939 exit the loop and return nil. The effect is to determine and return
|
|
|
940 whether a condition is true \"always\" (all iterations of the loop).
|
|
|
941
|
|
|
942 never COND
|
|
|
943 If COND is false, continue the loop and set the loop return value (like
|
|
|
944 `always') to t\; otherwise, exit the loop and return nil. The effect
|
|
|
945 is to determine and return whether a condition is \"never\" true (all
|
|
|
946 iterations of the loop).
|
|
|
947
|
|
|
948 thereis COND
|
|
|
949 If COND is true, exit the loop and return COND.
|
|
|
950
|
|
|
951 if/when COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...]
|
|
|
952 If COND is true, execute the directly following clause(s)\; otherwise,
|
|
|
953 execute the clauses following `else'.
|
|
|
954
|
|
|
955 unless COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...]
|
|
|
956 If COND is false, execute the directly following clause(s)\; otherwise, execute the clauses following `else'.
|
|
|
957
|
|
|
958 do EXPRS...
|
|
|
959 Execute the expressions (any Lisp forms).
|
|
|
960
|
|
|
961 initially EXPRS...
|
|
|
962 Execute EXPR once, before doing any iterations, and after values have
|
|
|
963 been set using `with'.
|
|
|
964
|
|
|
965 finally EXPRS...
|
|
|
966 Execute EXPR once, directly before the loop terminates. This will not
|
|
|
967 be executed if the loop terminates prematurely as a result of `always',
|
|
|
968 `never', `thereis', or `return'.
|
|
|
969
|
|
|
970 return EXPR
|
|
|
971 Exit from the loop and return EXPR.
|
|
|
972
|
|
|
973 finally return EXPR
|
|
|
974 Specify the value to be returned when the loop exits. (Unlike `return',
|
|
|
975 this doesn't cause the loop to immediately exit\; it will exit whenever
|
|
|
976 it normally would have.) This takes precedence over a return value
|
|
|
977 specified with `collect' and friends or `always' and friends.
|
|
|
978
|
|
|
979 named NAME
|
|
|
980 Specify the name for block surrounding the loop, in place of nil.
|
|
|
981 (See `block'.)
|
|
|
982 "
|
|
428
|
983 (if (not (memq t (mapcar 'symbolp (delq nil (delq t (copy-list args))))))
|
|
|
984 (list 'block nil (list* 'while t args))
|
|
|
985 (let ((loop-name nil) (loop-bindings nil)
|
|
|
986 (loop-body nil) (loop-steps nil)
|
|
|
987 (loop-result nil) (loop-result-explicit nil)
|
|
|
988 (loop-result-var nil) (loop-finish-flag nil)
|
|
|
989 (loop-accum-var nil) (loop-accum-vars nil)
|
|
|
990 (loop-initially nil) (loop-finally nil)
|
|
|
991 (loop-map-form nil) (loop-first-flag nil)
|
|
|
992 (loop-destr-temps nil) (loop-symbol-macs nil))
|
|
|
993 (setq args (append args '(cl-end-loop)))
|
|
|
994 (while (not (eq (car args) 'cl-end-loop)) (cl-parse-loop-clause))
|
|
|
995 (if loop-finish-flag
|
|
|
996 (cl-push (list (list loop-finish-flag t)) loop-bindings))
|
|
|
997 (if loop-first-flag
|
|
|
998 (progn (cl-push (list (list loop-first-flag t)) loop-bindings)
|
|
|
999 (cl-push (list 'setq loop-first-flag nil) loop-steps)))
|
|
|
1000 (let* ((epilogue (nconc (nreverse loop-finally)
|
|
|
1001 (list (or loop-result-explicit loop-result))))
|
|
|
1002 (ands (cl-loop-build-ands (nreverse loop-body)))
|
|
|
1003 (while-body (nconc (cadr ands) (nreverse loop-steps)))
|
|
|
1004 (body (append
|
|
|
1005 (nreverse loop-initially)
|
|
|
1006 (list (if loop-map-form
|
|
|
1007 (list 'block '--cl-finish--
|
|
|
1008 (subst
|
|
|
1009 (if (eq (car ands) t) while-body
|
|
|
1010 (cons (list 'or (car ands)
|
|
|
1011 '(return-from --cl-finish--
|
|
|
1012 nil))
|
|
|
1013 while-body))
|
|
|
1014 '--cl-map loop-map-form))
|
|
|
1015 (list* 'while (car ands) while-body)))
|
|
|
1016 (if loop-finish-flag
|
|
1346
|
1017 (if (equal epilogue '(nil))
|
|
|
1018 ;; XEmacs change: When epilogue is nil and
|
|
|
1019 ;; loop-finish-flag exists, you get a byte-compiler
|
|
|
1020 ;; warning using the original (commented-out)
|
|
|
1021 ;; code below. So instead we create a form that
|
|
|
1022 ;; gives the same result but uses loop-finish-flag.
|
|
|
1023 ;; --ben
|
|
|
1024 ;(list loop-result-var)
|
|
|
1025 (list (list 'if loop-finish-flag
|
|
|
1026 loop-result-var loop-result-var))
|
|
428
|
1027 (list (list 'if loop-finish-flag
|
|
|
1028 (cons 'progn epilogue) loop-result-var)))
|
|
|
1029 epilogue))))
|
|
|
1030 (if loop-result-var (cl-push (list loop-result-var) loop-bindings))
|
|
|
1031 (while loop-bindings
|
|
|
1032 (if (cdar loop-bindings)
|
|
|
1033 (setq body (list (cl-loop-let (cl-pop loop-bindings) body t)))
|
|
|
1034 (let ((lets nil))
|
|
|
1035 (while (and loop-bindings
|
|
|
1036 (not (cdar loop-bindings)))
|
|
|
1037 (cl-push (car (cl-pop loop-bindings)) lets))
|
|
|
1038 (setq body (list (cl-loop-let lets body nil))))))
|
|
|
1039 (if loop-symbol-macs
|
|
|
1040 (setq body (list (list* 'symbol-macrolet loop-symbol-macs body))))
|
|
|
1041 (list* 'block loop-name body)))))
|
|
|
1042
|
|
|
1043 (defun cl-parse-loop-clause () ; uses args, loop-*
|
|
|
1044 (let ((word (cl-pop args))
|
|
|
1045 (hash-types '(hash-key hash-keys hash-value hash-values))
|
|
|
1046 (key-types '(key-code key-codes key-seq key-seqs
|
|
|
1047 key-binding key-bindings)))
|
|
|
1048 (cond
|
|
|
1049
|
|
|
1050 ((null args)
|
|
|
1051 (error "Malformed `loop' macro"))
|
|
|
1052
|
|
|
1053 ((eq word 'named)
|
|
|
1054 (setq loop-name (cl-pop args)))
|
|
|
1055
|
|
|
1056 ((eq word 'initially)
|
|
|
1057 (if (memq (car args) '(do doing)) (cl-pop args))
|
|
|
1058 (or (consp (car args)) (error "Syntax error on `initially' clause"))
|
|
|
1059 (while (consp (car args))
|
|
|
1060 (cl-push (cl-pop args) loop-initially)))
|
|
|
1061
|
|
|
1062 ((eq word 'finally)
|
|
|
1063 (if (eq (car args) 'return)
|
|
|
1064 (setq loop-result-explicit (or (cl-pop2 args) '(quote nil)))
|
|
|
1065 (if (memq (car args) '(do doing)) (cl-pop args))
|
|
|
1066 (or (consp (car args)) (error "Syntax error on `finally' clause"))
|
|
|
1067 (if (and (eq (caar args) 'return) (null loop-name))
|
|
|
1068 (setq loop-result-explicit (or (nth 1 (cl-pop args)) '(quote nil)))
|
|
|
1069 (while (consp (car args))
|
|
|
1070 (cl-push (cl-pop args) loop-finally)))))
|
|
|
1071
|
|
|
1072 ((memq word '(for as))
|
|
|
1073 (let ((loop-for-bindings nil) (loop-for-sets nil) (loop-for-steps nil)
|
|
|
1074 (ands nil))
|
|
|
1075 (while
|
|
|
1076 (let ((var (or (cl-pop args) (gensym))))
|
|
|
1077 (setq word (cl-pop args))
|
|
|
1078 (if (eq word 'being) (setq word (cl-pop args)))
|
|
|
1079 (if (memq word '(the each)) (setq word (cl-pop args)))
|
|
|
1080 (if (memq word '(buffer buffers))
|
|
|
1081 (setq word 'in args (cons '(buffer-list) args)))
|
|
|
1082 (cond
|
|
|
1083
|
|
|
1084 ((memq word '(from downfrom upfrom to downto upto
|
|
|
1085 above below by))
|
|
|
1086 (cl-push word args)
|
|
|
1087 (if (memq (car args) '(downto above))
|
|
|
1088 (error "Must specify `from' value for downward loop"))
|
|
|
1089 (let* ((down (or (eq (car args) 'downfrom)
|
|
|
1090 (memq (caddr args) '(downto above))))
|
|
|
1091 (excl (or (memq (car args) '(above below))
|
|
|
1092 (memq (caddr args) '(above below))))
|
|
|
1093 (start (and (memq (car args) '(from upfrom downfrom))
|
|
|
1094 (cl-pop2 args)))
|
|
|
1095 (end (and (memq (car args)
|
|
|
1096 '(to upto downto above below))
|
|
|
1097 (cl-pop2 args)))
|
|
|
1098 (step (and (eq (car args) 'by) (cl-pop2 args)))
|
|
|
1099 (end-var (and (not (cl-const-expr-p end)) (gensym)))
|
|
|
1100 (step-var (and (not (cl-const-expr-p step))
|
|
|
1101 (gensym))))
|
|
|
1102 (and step (numberp step) (<= step 0)
|
|
|
1103 (error "Loop `by' value is not positive: %s" step))
|
|
|
1104 (cl-push (list var (or start 0)) loop-for-bindings)
|
|
|
1105 (if end-var (cl-push (list end-var end) loop-for-bindings))
|
|
|
1106 (if step-var (cl-push (list step-var step)
|
|
|
1107 loop-for-bindings))
|
|
|
1108 (if end
|
|
|
1109 (cl-push (list
|
|
|
1110 (if down (if excl '> '>=) (if excl '< '<=))
|
|
|
1111 var (or end-var end)) loop-body))
|
|
|
1112 (cl-push (list var (list (if down '- '+) var
|
|
|
1113 (or step-var step 1)))
|
|
|
1114 loop-for-steps)))
|
|
|
1115
|
|
|
1116 ((memq word '(in in-ref on))
|
|
|
1117 (let* ((on (eq word 'on))
|
|
|
1118 (temp (if (and on (symbolp var)) var (gensym))))
|
|
|
1119 (cl-push (list temp (cl-pop args)) loop-for-bindings)
|
|
|
1120 (cl-push (list 'consp temp) loop-body)
|
|
|
1121 (if (eq word 'in-ref)
|
|
|
1122 (cl-push (list var (list 'car temp)) loop-symbol-macs)
|
|
|
1123 (or (eq temp var)
|
|
|
1124 (progn
|
|
|
1125 (cl-push (list var nil) loop-for-bindings)
|
|
|
1126 (cl-push (list var (if on temp (list 'car temp)))
|
|
|
1127 loop-for-sets))))
|
|
|
1128 (cl-push (list temp
|
|
|
1129 (if (eq (car args) 'by)
|
|
|
1130 (let ((step (cl-pop2 args)))
|
|
|
1131 (if (and (memq (car-safe step)
|
|
|
1132 '(quote function
|
|
|
1133 function*))
|
|
|
1134 (symbolp (nth 1 step)))
|
|
|
1135 (list (nth 1 step) temp)
|
|
|
1136 (list 'funcall step temp)))
|
|
|
1137 (list 'cdr temp)))
|
|
|
1138 loop-for-steps)))
|
|
|
1139
|
|
|
1140 ((eq word '=)
|
|
|
1141 (let* ((start (cl-pop args))
|
|
|
1142 (then (if (eq (car args) 'then) (cl-pop2 args) start)))
|
|
|
1143 (cl-push (list var nil) loop-for-bindings)
|
|
|
1144 (if (or ands (eq (car args) 'and))
|
|
|
1145 (progn
|
|
|
1146 (cl-push (list var
|
|
|
1147 (list 'if
|
|
|
1148 (or loop-first-flag
|
|
|
1149 (setq loop-first-flag
|
|
|
1150 (gensym)))
|
|
|
1151 start var))
|
|
|
1152 loop-for-sets)
|
|
|
1153 (cl-push (list var then) loop-for-steps))
|
|
|
1154 (cl-push (list var
|
|
|
1155 (if (eq start then) start
|
|
|
1156 (list 'if
|
|
|
1157 (or loop-first-flag
|
|
|
1158 (setq loop-first-flag (gensym)))
|
|
|
1159 start then)))
|
|
|
1160 loop-for-sets))))
|
|
|
1161
|
|
|
1162 ((memq word '(across across-ref))
|
|
|
1163 (let ((temp-vec (gensym)) (temp-idx (gensym)))
|
|
|
1164 (cl-push (list temp-vec (cl-pop args)) loop-for-bindings)
|
|
|
1165 (cl-push (list temp-idx -1) loop-for-bindings)
|
|
|
1166 (cl-push (list '< (list 'setq temp-idx (list '1+ temp-idx))
|
|
|
1167 (list 'length temp-vec)) loop-body)
|
|
|
1168 (if (eq word 'across-ref)
|
|
|
1169 (cl-push (list var (list 'aref temp-vec temp-idx))
|
|
|
1170 loop-symbol-macs)
|
|
|
1171 (cl-push (list var nil) loop-for-bindings)
|
|
|
1172 (cl-push (list var (list 'aref temp-vec temp-idx))
|
|
|
1173 loop-for-sets))))
|
|
|
1174
|
|
|
1175 ((memq word '(element elements))
|
|
|
1176 (let ((ref (or (memq (car args) '(in-ref of-ref))
|
|
|
1177 (and (not (memq (car args) '(in of)))
|
|
|
1178 (error "Expected `of'"))))
|
|
|
1179 (seq (cl-pop2 args))
|
|
|
1180 (temp-seq (gensym))
|
|
|
1181 (temp-idx (if (eq (car args) 'using)
|
|
|
1182 (if (and (= (length (cadr args)) 2)
|
|
|
1183 (eq (caadr args) 'index))
|
|
|
1184 (cadr (cl-pop2 args))
|
|
|
1185 (error "Bad `using' clause"))
|
|
|
1186 (gensym))))
|
|
|
1187 (cl-push (list temp-seq seq) loop-for-bindings)
|
|
|
1188 (cl-push (list temp-idx 0) loop-for-bindings)
|
|
|
1189 (if ref
|
|
|
1190 (let ((temp-len (gensym)))
|
|
|
1191 (cl-push (list temp-len (list 'length temp-seq))
|
|
|
1192 loop-for-bindings)
|
|
|
1193 (cl-push (list var (list 'elt temp-seq temp-idx))
|
|
|
1194 loop-symbol-macs)
|
|
|
1195 (cl-push (list '< temp-idx temp-len) loop-body))
|
|
|
1196 (cl-push (list var nil) loop-for-bindings)
|
|
|
1197 (cl-push (list 'and temp-seq
|
|
|
1198 (list 'or (list 'consp temp-seq)
|
|
|
1199 (list '< temp-idx
|
|
|
1200 (list 'length temp-seq))))
|
|
|
1201 loop-body)
|
|
|
1202 (cl-push (list var (list 'if (list 'consp temp-seq)
|
|
|
1203 (list 'pop temp-seq)
|
|
|
1204 (list 'aref temp-seq temp-idx)))
|
|
|
1205 loop-for-sets))
|
|
|
1206 (cl-push (list temp-idx (list '1+ temp-idx))
|
|
|
1207 loop-for-steps)))
|
|
|
1208
|
|
|
1209 ((memq word hash-types)
|
|
|
1210 (or (memq (car args) '(in of)) (error "Expected `of'"))
|
|
|
1211 (let* ((table (cl-pop2 args))
|
|
|
1212 (other (if (eq (car args) 'using)
|
|
|
1213 (if (and (= (length (cadr args)) 2)
|
|
|
1214 (memq (caadr args) hash-types)
|
|
|
1215 (not (eq (caadr args) word)))
|
|
|
1216 (cadr (cl-pop2 args))
|
|
|
1217 (error "Bad `using' clause"))
|
|
|
1218 (gensym))))
|
|
|
1219 (if (memq word '(hash-value hash-values))
|
|
|
1220 (setq var (prog1 other (setq other var))))
|
|
|
1221 (setq loop-map-form
|
|
|
1222 (list 'maphash (list 'function
|
|
|
1223 (list* 'lambda (list var other)
|
|
|
1224 '--cl-map)) table))))
|
|
|
1225
|
|
|
1226 ((memq word '(symbol present-symbol external-symbol
|
|
|
1227 symbols present-symbols external-symbols))
|
|
|
1228 (let ((ob (and (memq (car args) '(in of)) (cl-pop2 args))))
|
|
|
1229 (setq loop-map-form
|
|
|
1230 (list 'mapatoms (list 'function
|
|
|
1231 (list* 'lambda (list var)
|
|
|
1232 '--cl-map)) ob))))
|
|
|
1233
|
|
|
1234 ((memq word '(overlay overlays extent extents))
|
|
|
1235 (let ((buf nil) (from nil) (to nil))
|
|
|
1236 (while (memq (car args) '(in of from to))
|
|
|
1237 (cond ((eq (car args) 'from) (setq from (cl-pop2 args)))
|
|
|
1238 ((eq (car args) 'to) (setq to (cl-pop2 args)))
|
|
|
1239 (t (setq buf (cl-pop2 args)))))
|
|
|
1240 (setq loop-map-form
|
|
|
1241 (list 'cl-map-extents
|
|
|
1242 (list 'function (list 'lambda (list var (gensym))
|
|
|
1243 '(progn . --cl-map) nil))
|
|
|
1244 buf from to))))
|
|
|
1245
|
|
|
1246 ((memq word '(interval intervals))
|
|
|
1247 (let ((buf nil) (prop nil) (from nil) (to nil)
|
|
|
1248 (var1 (gensym)) (var2 (gensym)))
|
|
|
1249 (while (memq (car args) '(in of property from to))
|
|
|
1250 (cond ((eq (car args) 'from) (setq from (cl-pop2 args)))
|
|
|
1251 ((eq (car args) 'to) (setq to (cl-pop2 args)))
|
|
|
1252 ((eq (car args) 'property)
|
|
|
1253 (setq prop (cl-pop2 args)))
|
|
|
1254 (t (setq buf (cl-pop2 args)))))
|
|
|
1255 (if (and (consp var) (symbolp (car var)) (symbolp (cdr var)))
|
|
|
1256 (setq var1 (car var) var2 (cdr var))
|
|
|
1257 (cl-push (list var (list 'cons var1 var2)) loop-for-sets))
|
|
|
1258 (setq loop-map-form
|
|
|
1259 (list 'cl-map-intervals
|
|
|
1260 (list 'function (list 'lambda (list var1 var2)
|
|
|
1261 '(progn . --cl-map)))
|
|
|
1262 buf prop from to))))
|
|
|
1263
|
|
|
1264 ((memq word key-types)
|
|
|
1265 (or (memq (car args) '(in of)) (error "Expected `of'"))
|
|
800
|
1266 (let* ((map (cl-pop2 args))
|
|
|
1267 other-word
|
|
|
1268 (other (if (eq (car args) 'using)
|
|
|
1269 (if (and (= (length (cadr args)) 2)
|
|
|
1270 (memq (setq other-word (caadr args))
|
|
|
1271 key-types)
|
|
|
1272 (not (eq (caadr args) word)))
|
|
|
1273 (cadr (cl-pop2 args))
|
|
|
1274 (error "Bad `using' clause"))
|
|
428
|
1275 (gensym))))
|
|
800
|
1276 (when (memq word '(key-binding key-bindings))
|
|
|
1277 (setq var (prog1 other (setq other var)))
|
|
|
1278 (and other-word (setq word other-word)))
|
|
428
|
1279 (setq loop-map-form
|
|
|
1280 (list (if (memq word '(key-seq key-seqs))
|
|
|
1281 'cl-map-keymap-recursively 'cl-map-keymap)
|
|
|
1282 (list 'function (list* 'lambda (list var other)
|
|
|
1283 '--cl-map)) map))))
|
|
|
1284
|
|
|
1285 ((memq word '(frame frames screen screens))
|
|
|
1286 (let ((temp (gensym)))
|
|
|
1287 (cl-push (list var '(selected-frame))
|
|
|
1288 loop-for-bindings)
|
|
|
1289 (cl-push (list temp nil) loop-for-bindings)
|
|
|
1290 (cl-push (list 'prog1 (list 'not (list 'eq var temp))
|
|
|
1291 (list 'or temp (list 'setq temp var)))
|
|
|
1292 loop-body)
|
|
|
1293 (cl-push (list var (list 'next-frame var))
|
|
|
1294 loop-for-steps)))
|
|
|
1295
|
|
|
1296 ((memq word '(window windows))
|
|
|
1297 (let ((scr (and (memq (car args) '(in of)) (cl-pop2 args)))
|
|
|
1298 (temp (gensym)))
|
|
|
1299 (cl-push (list var (if scr
|
|
|
1300 (list 'frame-selected-window scr)
|
|
|
1301 '(selected-window)))
|
|
|
1302 loop-for-bindings)
|
|
|
1303 (cl-push (list temp nil) loop-for-bindings)
|
|
|
1304 (cl-push (list 'prog1 (list 'not (list 'eq var temp))
|
|
|
1305 (list 'or temp (list 'setq temp var)))
|
|
|
1306 loop-body)
|
|
|
1307 (cl-push (list var (list 'next-window var)) loop-for-steps)))
|
|
|
1308
|
|
|
1309 (t
|
|
|
1310 (let ((handler (and (symbolp word)
|
|
|
1311 (get word 'cl-loop-for-handler))))
|
|
|
1312 (if handler
|
|
|
1313 (funcall handler var)
|
|
|
1314 (error "Expected a `for' preposition, found %s" word)))))
|
|
|
1315 (eq (car args) 'and))
|
|
|
1316 (setq ands t)
|
|
|
1317 (cl-pop args))
|
|
|
1318 (if (and ands loop-for-bindings)
|
|
|
1319 (cl-push (nreverse loop-for-bindings) loop-bindings)
|
|
|
1320 (setq loop-bindings (nconc (mapcar 'list loop-for-bindings)
|
|
|
1321 loop-bindings)))
|
|
|
1322 (if loop-for-sets
|
|
|
1323 (cl-push (list 'progn
|
|
|
1324 (cl-loop-let (nreverse loop-for-sets) 'setq ands)
|
|
|
1325 t) loop-body))
|
|
|
1326 (if loop-for-steps
|
|
|
1327 (cl-push (cons (if ands 'psetq 'setq)
|
|
|
1328 (apply 'append (nreverse loop-for-steps)))
|
|
|
1329 loop-steps))))
|
|
|
1330
|
|
|
1331 ((eq word 'repeat)
|
|
|
1332 (let ((temp (gensym)))
|
|
|
1333 (cl-push (list (list temp (cl-pop args))) loop-bindings)
|
|
|
1334 (cl-push (list '>= (list 'setq temp (list '1- temp)) 0) loop-body)))
|
|
|
1335
|
|
|
1336 ((eq word 'collect)
|
|
|
1337 (let ((what (cl-pop args))
|
|
|
1338 (var (cl-loop-handle-accum nil 'nreverse)))
|
|
|
1339 (if (eq var loop-accum-var)
|
|
|
1340 (cl-push (list 'progn (list 'push what var) t) loop-body)
|
|
|
1341 (cl-push (list 'progn
|
|
|
1342 (list 'setq var (list 'nconc var (list 'list what)))
|
|
|
1343 t) loop-body))))
|
|
|
1344
|
|
|
1345 ((memq word '(nconc nconcing append appending))
|
|
|
1346 (let ((what (cl-pop args))
|
|
|
1347 (var (cl-loop-handle-accum nil 'nreverse)))
|
|
|
1348 (cl-push (list 'progn
|
|
|
1349 (list 'setq var
|
|
|
1350 (if (eq var loop-accum-var)
|
|
|
1351 (list 'nconc
|
|
|
1352 (list (if (memq word '(nconc nconcing))
|
|
|
1353 'nreverse 'reverse)
|
|
|
1354 what)
|
|
|
1355 var)
|
|
|
1356 (list (if (memq word '(nconc nconcing))
|
|
|
1357 'nconc 'append)
|
|
|
1358 var what))) t) loop-body)))
|
|
|
1359
|
|
|
1360 ((memq word '(concat concating))
|
|
|
1361 (let ((what (cl-pop args))
|
|
|
1362 (var (cl-loop-handle-accum "")))
|
|
|
1363 (cl-push (list 'progn (list 'callf 'concat var what) t) loop-body)))
|
|
|
1364
|
|
|
1365 ((memq word '(vconcat vconcating))
|
|
|
1366 (let ((what (cl-pop args))
|
|
|
1367 (var (cl-loop-handle-accum [])))
|
|
|
1368 (cl-push (list 'progn (list 'callf 'vconcat var what) t) loop-body)))
|
|
|
1369
|
|
800
|
1370 ((memq word '(bvconcat bvconcating))
|
|
|
1371 (let ((what (cl-pop args))
|
|
|
1372 (var (cl-loop-handle-accum #*)))
|
|
|
1373 (cl-push (list 'progn (list 'callf 'bvconcat var what) t) loop-body)))
|
|
|
1374
|
|
428
|
1375 ((memq word '(sum summing))
|
|
|
1376 (let ((what (cl-pop args))
|
|
|
1377 (var (cl-loop-handle-accum 0)))
|
|
|
1378 (cl-push (list 'progn (list 'incf var what) t) loop-body)))
|
|
|
1379
|
|
|
1380 ((memq word '(count counting))
|
|
|
1381 (let ((what (cl-pop args))
|
|
|
1382 (var (cl-loop-handle-accum 0)))
|
|
|
1383 (cl-push (list 'progn (list 'if what (list 'incf var)) t) loop-body)))
|
|
|
1384
|
|
|
1385 ((memq word '(minimize minimizing maximize maximizing))
|
|
|
1386 (let* ((what (cl-pop args))
|
|
|
1387 (temp (if (cl-simple-expr-p what) what (gensym)))
|
|
|
1388 (var (cl-loop-handle-accum nil))
|
|
|
1389 (func (intern (substring (symbol-name word) 0 3)))
|
|
|
1390 (set (list 'setq var (list 'if var (list func var temp) temp))))
|
|
|
1391 (cl-push (list 'progn (if (eq temp what) set
|
|
|
1392 (list 'let (list (list temp what)) set))
|
|
|
1393 t) loop-body)))
|
|
|
1394
|
|
|
1395 ((eq word 'with)
|
|
|
1396 (let ((bindings nil))
|
|
|
1397 (while (progn (cl-push (list (cl-pop args)
|
|
|
1398 (and (eq (car args) '=) (cl-pop2 args)))
|
|
|
1399 bindings)
|
|
|
1400 (eq (car args) 'and))
|
|
|
1401 (cl-pop args))
|
|
|
1402 (cl-push (nreverse bindings) loop-bindings)))
|
|
|
1403
|
|
|
1404 ((eq word 'while)
|
|
|
1405 (cl-push (cl-pop args) loop-body))
|
|
|
1406
|
|
|
1407 ((eq word 'until)
|
|
|
1408 (cl-push (list 'not (cl-pop args)) loop-body))
|
|
|
1409
|
|
|
1410 ((eq word 'always)
|
|
|
1411 (or loop-finish-flag (setq loop-finish-flag (gensym)))
|
|
|
1412 (cl-push (list 'setq loop-finish-flag (cl-pop args)) loop-body)
|
|
|
1413 (setq loop-result t))
|
|
|
1414
|
|
|
1415 ((eq word 'never)
|
|
|
1416 (or loop-finish-flag (setq loop-finish-flag (gensym)))
|
|
|
1417 (cl-push (list 'setq loop-finish-flag (list 'not (cl-pop args)))
|
|
|
1418 loop-body)
|
|
|
1419 (setq loop-result t))
|
|
|
1420
|
|
|
1421 ((eq word 'thereis)
|
|
|
1422 (or loop-finish-flag (setq loop-finish-flag (gensym)))
|
|
|
1423 (or loop-result-var (setq loop-result-var (gensym)))
|
|
|
1424 (cl-push (list 'setq loop-finish-flag
|
|
|
1425 (list 'not (list 'setq loop-result-var (cl-pop args))))
|
|
|
1426 loop-body))
|
|
|
1427
|
|
|
1428 ((memq word '(if when unless))
|
|
|
1429 (let* ((cond (cl-pop args))
|
|
|
1430 (then (let ((loop-body nil))
|
|
|
1431 (cl-parse-loop-clause)
|
|
|
1432 (cl-loop-build-ands (nreverse loop-body))))
|
|
|
1433 (else (let ((loop-body nil))
|
|
|
1434 (if (eq (car args) 'else)
|
|
|
1435 (progn (cl-pop args) (cl-parse-loop-clause)))
|
|
|
1436 (cl-loop-build-ands (nreverse loop-body))))
|
|
|
1437 (simple (and (eq (car then) t) (eq (car else) t))))
|
|
|
1438 (if (eq (car args) 'end) (cl-pop args))
|
|
|
1439 (if (eq word 'unless) (setq then (prog1 else (setq else then))))
|
|
|
1440 (let ((form (cons (if simple (cons 'progn (nth 1 then)) (nth 2 then))
|
|
|
1441 (if simple (nth 1 else) (list (nth 2 else))))))
|
|
|
1442 (if (cl-expr-contains form 'it)
|
|
|
1443 (let ((temp (gensym)))
|
|
|
1444 (cl-push (list temp) loop-bindings)
|
|
|
1445 (setq form (list* 'if (list 'setq temp cond)
|
|
|
1446 (subst temp 'it form))))
|
|
|
1447 (setq form (list* 'if cond form)))
|
|
|
1448 (cl-push (if simple (list 'progn form t) form) loop-body))))
|
|
|
1449
|
|
|
1450 ((memq word '(do doing))
|
|
|
1451 (let ((body nil))
|
|
|
1452 (or (consp (car args)) (error "Syntax error on `do' clause"))
|
|
|
1453 (while (consp (car args)) (cl-push (cl-pop args) body))
|
|
|
1454 (cl-push (cons 'progn (nreverse (cons t body))) loop-body)))
|
|
|
1455
|
|
|
1456 ((eq word 'return)
|
|
|
1457 (or loop-finish-flag (setq loop-finish-flag (gensym)))
|
|
|
1458 (or loop-result-var (setq loop-result-var (gensym)))
|
|
|
1459 (cl-push (list 'setq loop-result-var (cl-pop args)
|
|
|
1460 loop-finish-flag nil) loop-body))
|
|
|
1461
|
|
|
1462 (t
|
|
|
1463 (let ((handler (and (symbolp word) (get word 'cl-loop-handler))))
|
|
|
1464 (or handler (error "Expected a loop keyword, found %s" word))
|
|
|
1465 (funcall handler))))
|
|
|
1466 (if (eq (car args) 'and)
|
|
|
1467 (progn (cl-pop args) (cl-parse-loop-clause)))))
|
|
|
1468
|
|
|
1469 (defun cl-loop-let (specs body par) ; uses loop-*
|
|
|
1470 (let ((p specs) (temps nil) (new nil))
|
|
|
1471 (while (and p (or (symbolp (car-safe (car p))) (null (cadar p))))
|
|
|
1472 (setq p (cdr p)))
|
|
|
1473 (and par p
|
|
|
1474 (progn
|
|
|
1475 (setq par nil p specs)
|
|
|
1476 (while p
|
|
|
1477 (or (cl-const-expr-p (cadar p))
|
|
|
1478 (let ((temp (gensym)))
|
|
|
1479 (cl-push (list temp (cadar p)) temps)
|
|
|
1480 (setcar (cdar p) temp)))
|
|
|
1481 (setq p (cdr p)))))
|
|
|
1482 (while specs
|
|
|
1483 (if (and (consp (car specs)) (listp (caar specs)))
|
|
|
1484 (let* ((spec (caar specs)) (nspecs nil)
|
|
|
1485 (expr (cadr (cl-pop specs)))
|
|
|
1486 (temp (cdr (or (assq spec loop-destr-temps)
|
|
|
1487 (car (cl-push (cons spec (or (last spec 0)
|
|
|
1488 (gensym)))
|
|
|
1489 loop-destr-temps))))))
|
|
|
1490 (cl-push (list temp expr) new)
|
|
|
1491 (while (consp spec)
|
|
|
1492 (cl-push (list (cl-pop spec)
|
|
|
1493 (and expr (list (if spec 'pop 'car) temp)))
|
|
|
1494 nspecs))
|
|
|
1495 (setq specs (nconc (nreverse nspecs) specs)))
|
|
|
1496 (cl-push (cl-pop specs) new)))
|
|
|
1497 (if (eq body 'setq)
|
|
|
1498 (let ((set (cons (if par 'psetq 'setq) (apply 'nconc (nreverse new)))))
|
|
|
1499 (if temps (list 'let* (nreverse temps) set) set))
|
|
|
1500 (list* (if par 'let 'let*)
|
|
|
1501 (nconc (nreverse temps) (nreverse new)) body))))
|
|
|
1502
|
|
|
1503 (defun cl-loop-handle-accum (def &optional func) ; uses args, loop-*
|
|
|
1504 (if (eq (car args) 'into)
|
|
|
1505 (let ((var (cl-pop2 args)))
|
|
|
1506 (or (memq var loop-accum-vars)
|
|
|
1507 (progn (cl-push (list (list var def)) loop-bindings)
|
|
|
1508 (cl-push var loop-accum-vars)))
|
|
|
1509 var)
|
|
|
1510 (or loop-accum-var
|
|
|
1511 (progn
|
|
|
1512 (cl-push (list (list (setq loop-accum-var (gensym)) def))
|
|
|
1513 loop-bindings)
|
|
|
1514 (setq loop-result (if func (list func loop-accum-var)
|
|
|
1515 loop-accum-var))
|
|
|
1516 loop-accum-var))))
|
|
|
1517
|
|
|
1518 (defun cl-loop-build-ands (clauses)
|
|
|
1519 (let ((ands nil)
|
|
|
1520 (body nil))
|
|
|
1521 (while clauses
|
|
|
1522 (if (and (eq (car-safe (car clauses)) 'progn)
|
|
|
1523 (eq (car (last (car clauses))) t))
|
|
|
1524 (if (cdr clauses)
|
|
|
1525 (setq clauses (cons (nconc (butlast (car clauses))
|
|
|
1526 (if (eq (car-safe (cadr clauses))
|
|
|
1527 'progn)
|
|
|
1528 (cdadr clauses)
|
|
|
1529 (list (cadr clauses))))
|
|
|
1530 (cddr clauses)))
|
|
|
1531 (setq body (cdr (butlast (cl-pop clauses)))))
|
|
|
1532 (cl-push (cl-pop clauses) ands)))
|
|
|
1533 (setq ands (or (nreverse ands) (list t)))
|
|
|
1534 (list (if (cdr ands) (cons 'and ands) (car ands))
|
|
|
1535 body
|
|
|
1536 (let ((full (if body
|
|
|
1537 (append ands (list (cons 'progn (append body '(t)))))
|
|
|
1538 ands)))
|
|
|
1539 (if (cdr full) (cons 'and full) (car full))))))
|
|
|
1540
|
|
|
1541
|
|
|
1542 ;;; Other iteration control structures.
|
|
|
1543
|
|
|
1544 ;;;###autoload
|
|
|
1545 (defmacro do (steps endtest &rest body)
|
|
|
1546 "The Common Lisp `do' loop.
|
|
|
1547 Format is: (do ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)"
|
|
|
1548 (cl-expand-do-loop steps endtest body nil))
|
|
|
1549
|
|
|
1550 ;;;###autoload
|
|
|
1551 (defmacro do* (steps endtest &rest body)
|
|
|
1552 "The Common Lisp `do*' loop.
|
|
|
1553 Format is: (do* ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)"
|
|
|
1554 (cl-expand-do-loop steps endtest body t))
|
|
|
1555
|
|
|
1556 (defun cl-expand-do-loop (steps endtest body star)
|
|
|
1557 (list 'block nil
|
|
|
1558 (list* (if star 'let* 'let)
|
|
|
1559 (mapcar #'(lambda (c) (if (consp c) (list (car c) (nth 1 c)) c))
|
|
|
1560 steps)
|
|
|
1561 (list* 'while (list 'not (car endtest))
|
|
|
1562 (append body
|
|
|
1563 (let ((sets (mapcar
|
|
|
1564 #'(lambda (c)
|
|
|
1565 (and (consp c) (cdr (cdr c))
|
|
|
1566 (list (car c) (nth 2 c))))
|
|
|
1567 steps)))
|
|
|
1568 (setq sets (delq nil sets))
|
|
|
1569 (and sets
|
|
|
1570 (list (cons (if (or star (not (cdr sets)))
|
|
|
1571 'setq 'psetq)
|
|
|
1572 (apply 'append sets)))))))
|
|
|
1573 (or (cdr endtest) '(nil)))))
|
|
|
1574
|
|
|
1575 ;;;###autoload
|
|
|
1576 (defmacro dolist (spec &rest body)
|
|
|
1577 "(dolist (VAR LIST [RESULT]) BODY...): loop over a list.
|
|
|
1578 Evaluate BODY with VAR bound to each `car' from LIST, in turn.
|
|
|
1579 Then evaluate RESULT to get return value, default nil."
|
|
|
1580 (let ((temp (gensym "--dolist-temp--")))
|
|
|
1581 (list 'block nil
|
|
|
1582 (list* 'let (list (list temp (nth 1 spec)) (car spec))
|
|
|
1583 (list* 'while temp (list 'setq (car spec) (list 'car temp))
|
|
|
1584 (append body (list (list 'setq temp
|
|
|
1585 (list 'cdr temp)))))
|
|
|
1586 (if (cdr (cdr spec))
|
|
|
1587 (cons (list 'setq (car spec) nil) (cdr (cdr spec)))
|
|
|
1588 '(nil))))))
|
|
|
1589
|
|
|
1590 ;;;###autoload
|
|
|
1591 (defmacro dotimes (spec &rest body)
|
|
|
1592 "(dotimes (VAR COUNT [RESULT]) BODY...): loop a certain number of times.
|
|
|
1593 Evaluate BODY with VAR bound to successive integers from 0, inclusive,
|
|
|
1594 to COUNT, exclusive. Then evaluate RESULT to get return value, default
|
|
|
1595 nil."
|
|
|
1596 (let ((temp (gensym "--dotimes-temp--")))
|
|
|
1597 (list 'block nil
|
|
|
1598 (list* 'let (list (list temp (nth 1 spec)) (list (car spec) 0))
|
|
|
1599 (list* 'while (list '< (car spec) temp)
|
|
|
1600 (append body (list (list 'incf (car spec)))))
|
|
|
1601 (or (cdr (cdr spec)) '(nil))))))
|
|
|
1602
|
|
|
1603 ;;;###autoload
|
|
|
1604 (defmacro do-symbols (spec &rest body)
|
|
|
1605 "(dosymbols (VAR [OBARRAY [RESULT]]) BODY...): loop over all symbols.
|
|
|
1606 Evaluate BODY with VAR bound to each interned symbol, or to each symbol
|
|
|
1607 from OBARRAY."
|
|
|
1608 ;; Apparently this doesn't have an implicit block.
|
|
|
1609 (list 'block nil
|
|
|
1610 (list 'let (list (car spec))
|
|
|
1611 (list* 'mapatoms
|
|
|
1612 (list 'function (list* 'lambda (list (car spec)) body))
|
|
|
1613 (and (cadr spec) (list (cadr spec))))
|
|
|
1614 (caddr spec))))
|
|
|
1615
|
|
|
1616 ;;;###autoload
|
|
|
1617 (defmacro do-all-symbols (spec &rest body)
|
|
|
1618 (list* 'do-symbols (list (car spec) nil (cadr spec)) body))
|
|
|
1619
|
|
|
1620
|
|
|
1621 ;;; Assignments.
|
|
|
1622
|
|
|
1623 ;;;###autoload
|
|
|
1624 (defmacro psetq (&rest args)
|
|
|
1625 "(psetq SYM VAL SYM VAL ...): set SYMs to the values VALs in parallel.
|
|
|
1626 This is like `setq', except that all VAL forms are evaluated (in order)
|
|
|
1627 before assigning any symbols SYM to the corresponding values."
|
|
|
1628 (cons 'psetf args))
|
|
|
1629
|
|
|
1630
|
|
|
1631 ;;; Binding control structures.
|
|
|
1632
|
|
|
1633 ;;;###autoload
|
|
|
1634 (defmacro progv (symbols values &rest body)
|
|
|
1635 "(progv SYMBOLS VALUES BODY...): bind SYMBOLS to VALUES dynamically in BODY.
|
|
|
1636 The forms SYMBOLS and VALUES are evaluated, and must evaluate to lists.
|
|
|
1637 Each SYMBOL in the first list is bound to the corresponding VALUE in the
|
|
|
1638 second list (or made unbound if VALUES is shorter than SYMBOLS); then the
|
|
|
1639 BODY forms are executed and their result is returned. This is much like
|
|
|
1640 a `let' form, except that the list of symbols can be computed at run-time."
|
|
|
1641 (list 'let '((cl-progv-save nil))
|
|
|
1642 (list 'unwind-protect
|
|
|
1643 (list* 'progn (list 'cl-progv-before symbols values) body)
|
|
|
1644 '(cl-progv-after))))
|
|
|
1645
|
|
|
1646 ;;; This should really have some way to shadow 'byte-compile properties, etc.
|
|
|
1647 ;;;###autoload
|
|
|
1648 (defmacro flet (bindings &rest body)
|
|
|
1649 "(flet ((FUNC ARGLIST BODY...) ...) FORM...): make temporary function defns.
|
|
|
1650 This is an analogue of `let' that operates on the function cell of FUNC
|
|
|
1651 rather than its value cell. The FORMs are evaluated with the specified
|
|
|
1652 function definitions in place, then the definitions are undone (the FUNCs
|
|
|
1653 go back to their previous definitions, or lack thereof)."
|
|
|
1654 (list* 'letf*
|
|
|
1655 (mapcar
|
|
|
1656 #'(lambda (x)
|
|
|
1657 (if (or (and (fboundp (car x))
|
|
|
1658 (eq (car-safe (symbol-function (car x))) 'macro))
|
|
|
1659 (cdr (assq (car x) cl-macro-environment)))
|
|
|
1660 (error "Use `labels', not `flet', to rebind macro names"))
|
|
|
1661 (let ((func (list 'function*
|
|
|
1662 (list 'lambda (cadr x)
|
|
|
1663 (list* 'block (car x) (cddr x))))))
|
|
|
1664 (if (and (cl-compiling-file)
|
|
|
1665 (boundp 'byte-compile-function-environment))
|
|
|
1666 (cl-push (cons (car x) (eval func))
|
|
|
1667 byte-compile-function-environment))
|
|
|
1668 (list (list 'symbol-function (list 'quote (car x))) func)))
|
|
|
1669 bindings)
|
|
|
1670 body))
|
|
|
1671
|
|
|
1672 ;;;###autoload
|
|
|
1673 (defmacro labels (bindings &rest body)
|
|
|
1674 "(labels ((FUNC ARGLIST BODY...) ...) FORM...): make temporary func bindings.
|
|
|
1675 This is like `flet', except the bindings are lexical instead of dynamic.
|
|
|
1676 Unlike `flet', this macro is fully compliant with the Common Lisp standard."
|
|
|
1677 (let ((vars nil) (sets nil) (cl-macro-environment cl-macro-environment))
|
|
|
1678 (while bindings
|
|
|
1679 (let ((var (gensym)))
|
|
|
1680 (cl-push var vars)
|
|
|
1681 (cl-push (list 'function* (cons 'lambda (cdar bindings))) sets)
|
|
|
1682 (cl-push var sets)
|
|
|
1683 (cl-push (list (car (cl-pop bindings)) 'lambda '(&rest cl-labels-args)
|
|
|
1684 (list 'list* '(quote funcall) (list 'quote var)
|
|
|
1685 'cl-labels-args))
|
|
|
1686 cl-macro-environment)))
|
|
|
1687 (cl-macroexpand-all (list* 'lexical-let vars (cons (cons 'setq sets) body))
|
|
|
1688 cl-macro-environment)))
|
|
|
1689
|
|
|
1690 ;; The following ought to have a better definition for use with newer
|
|
|
1691 ;; byte compilers.
|
|
|
1692 ;;;###autoload
|
|
|
1693 (defmacro macrolet (bindings &rest body)
|
|
|
1694 "(macrolet ((NAME ARGLIST BODY...) ...) FORM...): make temporary macro defns.
|
|
|
1695 This is like `flet', but for macros instead of functions."
|
|
|
1696 (if (cdr bindings)
|
|
|
1697 (list 'macrolet
|
|
|
1698 (list (car bindings)) (list* 'macrolet (cdr bindings) body))
|
|
|
1699 (if (null bindings) (cons 'progn body)
|
|
|
1700 (let* ((name (caar bindings))
|
|
|
1701 (res (cl-transform-lambda (cdar bindings) name)))
|
|
|
1702 (eval (car res))
|
|
|
1703 (cl-macroexpand-all (cons 'progn body)
|
|
|
1704 (cons (list* name 'lambda (cdr res))
|
|
|
1705 cl-macro-environment))))))
|
|
|
1706
|
|
|
1707 ;;;###autoload
|
|
|
1708 (defmacro symbol-macrolet (bindings &rest body)
|
|
|
1709 "(symbol-macrolet ((NAME EXPANSION) ...) FORM...): make symbol macro defns.
|
|
|
1710 Within the body FORMs, references to the variable NAME will be replaced
|
|
|
1711 by EXPANSION, and (setq NAME ...) will act like (setf EXPANSION ...)."
|
|
|
1712 (if (cdr bindings)
|
|
|
1713 (list 'symbol-macrolet
|
|
|
1714 (list (car bindings)) (list* 'symbol-macrolet (cdr bindings) body))
|
|
|
1715 (if (null bindings) (cons 'progn body)
|
|
|
1716 (cl-macroexpand-all (cons 'progn body)
|
|
|
1717 (cons (list (symbol-name (caar bindings))
|
|
|
1718 (cadar bindings))
|
|
|
1719 cl-macro-environment)))))
|
|
|
1720
|
|
|
1721 (defvar cl-closure-vars nil)
|
|
|
1722 ;;;###autoload
|
|
|
1723 (defmacro lexical-let (bindings &rest body)
|
|
|
1724 "(lexical-let BINDINGS BODY...): like `let', but lexically scoped.
|
|
|
1725 The main visible difference is that lambdas inside BODY will create
|
|
|
1726 lexical closures as in Common Lisp."
|
|
|
1727 (let* ((cl-closure-vars cl-closure-vars)
|
|
|
1728 (vars (mapcar #'(lambda (x)
|
|
|
1729 (or (consp x) (setq x (list x)))
|
|
|
1730 (cl-push (gensym (format "--%s--" (car x)))
|
|
|
1731 cl-closure-vars)
|
|
|
1732 (list (car x) (cadr x) (car cl-closure-vars)))
|
|
|
1733 bindings))
|
|
|
1734 (ebody
|
|
|
1735 (cl-macroexpand-all
|
|
|
1736 (cons 'progn body)
|
|
|
1737 (nconc (mapcar #'(lambda (x)
|
|
|
1738 (list (symbol-name (car x))
|
|
|
1739 (list 'symbol-value (caddr x))
|
|
|
1740 t))
|
|
|
1741 vars)
|
|
|
1742 (list '(defun . cl-defun-expander))
|
|
|
1743 cl-macro-environment))))
|
|
|
1744 (if (not (get (car (last cl-closure-vars)) 'used))
|
|
|
1745 (list 'let (mapcar #'(lambda (x) (list (caddr x) (cadr x))) vars)
|
|
|
1746 (sublis (mapcar #'(lambda (x)
|
|
|
1747 (cons (caddr x) (list 'quote (caddr x))))
|
|
|
1748 vars)
|
|
|
1749 ebody))
|
|
|
1750 (list 'let (mapcar #'(lambda (x)
|
|
|
1751 (list (caddr x)
|
|
|
1752 (list 'make-symbol
|
|
|
1753 (format "--%s--" (car x)))))
|
|
|
1754 vars)
|
|
|
1755 (apply 'append '(setf)
|
|
|
1756 (mapcar #'(lambda (x)
|
|
|
1757 (list (list 'symbol-value (caddr x)) (cadr x)))
|
|
|
1758 vars))
|
|
|
1759 ebody))))
|
|
|
1760
|
|
|
1761 ;;;###autoload
|
|
|
1762 (defmacro lexical-let* (bindings &rest body)
|
|
|
1763 "(lexical-let* BINDINGS BODY...): like `let*', but lexically scoped.
|
|
|
1764 The main visible difference is that lambdas inside BODY will create
|
|
|
1765 lexical closures as in Common Lisp."
|
|
|
1766 (if (null bindings) (cons 'progn body)
|
|
|
1767 (setq bindings (reverse bindings))
|
|
|
1768 (while bindings
|
|
|
1769 (setq body (list (list* 'lexical-let (list (cl-pop bindings)) body))))
|
|
|
1770 (car body)))
|
|
|
1771
|
|
|
1772 (defun cl-defun-expander (func &rest rest)
|
|
|
1773 (list 'progn
|
|
|
1774 (list 'defalias (list 'quote func)
|
|
|
1775 (list 'function (cons 'lambda rest)))
|
|
|
1776 (list 'quote func)))
|
|
|
1777
|
|
|
1778
|
|
|
1779 ;;; Multiple values.
|
|
|
1780
|
|
|
1781 ;;;###autoload
|
|
|
1782 (defmacro multiple-value-bind (vars form &rest body)
|
|
|
1783 "(multiple-value-bind (SYM SYM...) FORM BODY): collect multiple return values.
|
|
|
1784 FORM must return a list; the BODY is then executed with the first N elements
|
|
|
1785 of this list bound (`let'-style) to each of the symbols SYM in turn. This
|
|
|
1786 is analogous to the Common Lisp `multiple-value-bind' macro, using lists to
|
|
|
1787 simulate true multiple return values. For compatibility, (values A B C) is
|
|
|
1788 a synonym for (list A B C)."
|
|
|
1789 (let ((temp (gensym)) (n -1))
|
|
|
1790 (list* 'let* (cons (list temp form)
|
|
|
1791 (mapcar #'(lambda (v)
|
|
|
1792 (list v (list 'nth (setq n (1+ n)) temp)))
|
|
|
1793 vars))
|
|
|
1794 body)))
|
|
|
1795
|
|
|
1796 ;;;###autoload
|
|
|
1797 (defmacro multiple-value-setq (vars form)
|
|
|
1798 "(multiple-value-setq (SYM SYM...) FORM): collect multiple return values.
|
|
|
1799 FORM must return a list; the first N elements of this list are stored in
|
|
|
1800 each of the symbols SYM in turn. This is analogous to the Common Lisp
|
|
|
1801 `multiple-value-setq' macro, using lists to simulate true multiple return
|
|
|
1802 values. For compatibility, (values A B C) is a synonym for (list A B C)."
|
|
|
1803 (cond ((null vars) (list 'progn form nil))
|
|
|
1804 ((null (cdr vars)) (list 'setq (car vars) (list 'car form)))
|
|
|
1805 (t
|
|
|
1806 (let* ((temp (gensym)) (n 0))
|
|
|
1807 (list 'let (list (list temp form))
|
|
|
1808 (list 'prog1 (list 'setq (cl-pop vars) (list 'car temp))
|
|
|
1809 (cons 'setq
|
|
|
1810 (apply 'nconc
|
|
|
1811 (mapcar
|
|
|
1812 #'(lambda (v)
|
|
|
1813 (list v (list
|
|
|
1814 'nth
|
|
|
1815 (setq n (1+ n))
|
|
|
1816 temp)))
|
|
|
1817 vars)))))))))
|
|
|
1818
|
|
|
1819
|
|
|
1820 ;;; Declarations.
|
|
|
1821
|
|
|
1822 ;;;###autoload
|
|
|
1823 (defmacro locally (&rest body) (cons 'progn body))
|
|
|
1824 ;;;###autoload
|
|
|
1825 (defmacro the (type form) form)
|
|
|
1826
|
|
|
1827 (defvar cl-proclaim-history t) ; for future compilers
|
|
|
1828 (defvar cl-declare-stack t) ; for future compilers
|
|
|
1829
|
|
|
1830 (defun cl-do-proclaim (spec hist)
|
|
|
1831 (and hist (listp cl-proclaim-history) (cl-push spec cl-proclaim-history))
|
|
|
1832 (cond ((eq (car-safe spec) 'special)
|
|
|
1833 (if (boundp 'byte-compile-bound-variables)
|
|
|
1834 (setq byte-compile-bound-variables
|
|
442
|
1835 (append
|
|
|
1836 (mapcar #'(lambda (v) (cons v byte-compile-global-bit))
|
|
|
1837 (cdr spec))
|
|
|
1838 byte-compile-bound-variables))))
|
|
428
|
1839
|
|
|
1840 ((eq (car-safe spec) 'inline)
|
|
|
1841 (while (setq spec (cdr spec))
|
|
|
1842 (or (memq (get (car spec) 'byte-optimizer)
|
|
|
1843 '(nil byte-compile-inline-expand))
|
|
|
1844 (error "%s already has a byte-optimizer, can't make it inline"
|
|
|
1845 (car spec)))
|
|
|
1846 (put (car spec) 'byte-optimizer 'byte-compile-inline-expand)))
|
|
|
1847
|
|
|
1848 ((eq (car-safe spec) 'notinline)
|
|
|
1849 (while (setq spec (cdr spec))
|
|
|
1850 (if (eq (get (car spec) 'byte-optimizer)
|
|
|
1851 'byte-compile-inline-expand)
|
|
|
1852 (put (car spec) 'byte-optimizer nil))))
|
|
|
1853
|
|
|
1854 ((eq (car-safe spec) 'optimize)
|
|
|
1855 (let ((speed (assq (nth 1 (assq 'speed (cdr spec)))
|
|
446
|
1856 '((0 . nil) (1 . t) (2 . t) (3 . t))))
|
|
428
|
1857 (safety (assq (nth 1 (assq 'safety (cdr spec)))
|
|
446
|
1858 '((0 . t) (1 . t) (2 . t) (3 . nil)))))
|
|
|
1859 (when speed
|
|
|
1860 (setq cl-optimize-speed (car speed)
|
|
|
1861 byte-optimize (cdr speed)))
|
|
|
1862 (when safety
|
|
|
1863 (setq cl-optimize-safety (car safety)
|
|
|
1864 byte-compile-delete-errors (cdr safety)))))
|
|
428
|
1865
|
|
|
1866 ((and (eq (car-safe spec) 'warn) (boundp 'byte-compile-warnings))
|
|
|
1867 (if (eq byte-compile-warnings t)
|
|
|
1868 ;; XEmacs change
|
|
|
1869 (setq byte-compile-warnings byte-compile-default-warnings))
|
|
|
1870 (while (setq spec (cdr spec))
|
|
|
1871 (if (consp (car spec))
|
|
|
1872 (if (eq (cadar spec) 0)
|
|
|
1873 (setq byte-compile-warnings
|
|
|
1874 (delq (caar spec) byte-compile-warnings))
|
|
|
1875 (setq byte-compile-warnings
|
|
|
1876 (adjoin (caar spec) byte-compile-warnings)))))))
|
|
|
1877 nil)
|
|
|
1878
|
|
|
1879 ;;; Process any proclamations made before cl-macs was loaded.
|
|
|
1880 (defvar cl-proclaims-deferred)
|
|
|
1881 (let ((p (reverse cl-proclaims-deferred)))
|
|
|
1882 (while p (cl-do-proclaim (cl-pop p) t))
|
|
|
1883 (setq cl-proclaims-deferred nil))
|
|
|
1884
|
|
|
1885 ;;;###autoload
|
|
|
1886 (defmacro declare (&rest specs)
|
|
|
1887 (if (cl-compiling-file)
|
|
|
1888 (while specs
|
|
|
1889 (if (listp cl-declare-stack) (cl-push (car specs) cl-declare-stack))
|
|
|
1890 (cl-do-proclaim (cl-pop specs) nil)))
|
|
|
1891 nil)
|
|
|
1892
|
|
|
1893
|
|
|
1894
|
|
|
1895 ;;; Generalized variables.
|
|
|
1896
|
|
|
1897 ;;;###autoload
|
|
|
1898 (defmacro define-setf-method (func args &rest body)
|
|
|
1899 "(define-setf-method NAME ARGLIST BODY...): define a `setf' method.
|
|
|
1900 This method shows how to handle `setf's to places of the form (NAME ARGS...).
|
|
|
1901 The argument forms ARGS are bound according to ARGLIST, as if NAME were
|
|
|
1902 going to be expanded as a macro, then the BODY forms are executed and must
|
|
|
1903 return a list of five elements: a temporary-variables list, a value-forms
|
|
|
1904 list, a store-variables list (of length one), a store-form, and an access-
|
|
|
1905 form. See `defsetf' for a simpler way to define most setf-methods."
|
|
|
1906 (append '(eval-when (compile load eval))
|
|
|
1907 (if (stringp (car body))
|
|
|
1908 (list (list 'put (list 'quote func) '(quote setf-documentation)
|
|
|
1909 (cl-pop body))))
|
|
|
1910 (list (cl-transform-function-property
|
|
|
1911 func 'setf-method (cons args body)))))
|
|
|
1912
|
|
|
1913 ;;;###autoload
|
|
|
1914 (defmacro defsetf (func arg1 &rest args)
|
|
|
1915 "(defsetf NAME FUNC): define a `setf' method.
|
|
|
1916 This macro is an easy-to-use substitute for `define-setf-method' that works
|
|
|
1917 well for simple place forms. In the simple `defsetf' form, `setf's of
|
|
|
1918 the form (setf (NAME ARGS...) VAL) are transformed to function or macro
|
|
|
1919 calls of the form (FUNC ARGS... VAL). Example: (defsetf aref aset).
|
|
|
1920 Alternate form: (defsetf NAME ARGLIST (STORE) BODY...).
|
|
|
1921 Here, the above `setf' call is expanded by binding the argument forms ARGS
|
|
|
1922 according to ARGLIST, binding the value form VAL to STORE, then executing
|
|
|
1923 BODY, which must return a Lisp form that does the necessary `setf' operation.
|
|
|
1924 Actually, ARGLIST and STORE may be bound to temporary variables which are
|
|
|
1925 introduced automatically to preserve proper execution order of the arguments.
|
|
|
1926 Example: (defsetf nth (n x) (v) (list 'setcar (list 'nthcdr n x) v))."
|
|
|
1927 (if (listp arg1)
|
|
|
1928 (let* ((largs nil) (largsr nil)
|
|
|
1929 (temps nil) (tempsr nil)
|
|
|
1930 (restarg nil) (rest-temps nil)
|
|
|
1931 (store-var (car (prog1 (car args) (setq args (cdr args)))))
|
|
|
1932 (store-temp (intern (format "--%s--temp--" store-var)))
|
|
|
1933 (lets1 nil) (lets2 nil)
|
|
|
1934 (docstr nil) (p arg1))
|
|
|
1935 (if (stringp (car args))
|
|
|
1936 (setq docstr (prog1 (car args) (setq args (cdr args)))))
|
|
|
1937 (while (and p (not (eq (car p) '&aux)))
|
|
|
1938 (if (eq (car p) '&rest)
|
|
|
1939 (setq p (cdr p) restarg (car p))
|
|
|
1940 (or (memq (car p) '(&optional &key &allow-other-keys))
|
|
|
1941 (setq largs (cons (if (consp (car p)) (car (car p)) (car p))
|
|
|
1942 largs)
|
|
|
1943 temps (cons (intern (format "--%s--temp--" (car largs)))
|
|
|
1944 temps))))
|
|
|
1945 (setq p (cdr p)))
|
|
|
1946 (setq largs (nreverse largs) temps (nreverse temps))
|
|
|
1947 (if restarg
|
|
|
1948 (setq largsr (append largs (list restarg))
|
|
|
1949 rest-temps (intern (format "--%s--temp--" restarg))
|
|
|
1950 tempsr (append temps (list rest-temps)))
|
|
|
1951 (setq largsr largs tempsr temps))
|
|
|
1952 (let ((p1 largs) (p2 temps))
|
|
|
1953 (while p1
|
|
|
1954 (setq lets1 (cons (list (car p2)
|
|
|
1955 (list 'gensym (format "--%s--" (car p1))))
|
|
|
1956 lets1)
|
|
|
1957 lets2 (cons (list (car p1) (car p2)) lets2)
|
|
|
1958 p1 (cdr p1) p2 (cdr p2))))
|
|
|
1959 (if restarg (setq lets2 (cons (list restarg rest-temps) lets2)))
|
|
|
1960 (append (list 'define-setf-method func arg1)
|
|
|
1961 (and docstr (list docstr))
|
|
|
1962 (list
|
|
|
1963 (list 'let*
|
|
|
1964 (nreverse
|
|
|
1965 (cons (list store-temp
|
|
|
1966 (list 'gensym (format "--%s--" store-var)))
|
|
|
1967 (if restarg
|
|
|
1968 (append
|
|
|
1969 (list
|
|
|
1970 (list rest-temps
|
|
|
1971 (list 'mapcar '(quote gensym)
|
|
|
1972 restarg)))
|
|
|
1973 lets1)
|
|
|
1974 lets1)))
|
|
|
1975 (list 'list ; 'values
|
|
|
1976 (cons (if restarg 'list* 'list) tempsr)
|
|
|
1977 (cons (if restarg 'list* 'list) largsr)
|
|
|
1978 (list 'list store-temp)
|
|
|
1979 (cons 'let*
|
|
|
1980 (cons (nreverse
|
|
|
1981 (cons (list store-var store-temp)
|
|
|
1982 lets2))
|
|
|
1983 args))
|
|
|
1984 (cons (if restarg 'list* 'list)
|
|
|
1985 (cons (list 'quote func) tempsr)))))))
|
|
|
1986 (list 'defsetf func '(&rest args) '(store)
|
|
|
1987 (let ((call (list 'cons (list 'quote arg1)
|
|
|
1988 '(append args (list store)))))
|
|
|
1989 (if (car args)
|
|
|
1990 (list 'list '(quote progn) call 'store)
|
|
|
1991 call)))))
|
|
|
1992
|
|
|
1993 ;;; Some standard place types from Common Lisp.
|
|
|
1994 (eval-when-compile (defvar ignored-arg)) ; Warning suppression
|
|
|
1995 (defsetf aref aset)
|
|
|
1996 (defsetf car setcar)
|
|
|
1997 (defsetf cdr setcdr)
|
|
|
1998 (defsetf elt (seq n) (store)
|
|
|
1999 (list 'if (list 'listp seq) (list 'setcar (list 'nthcdr n seq) store)
|
|
|
2000 (list 'aset seq n store)))
|
|
|
2001 (defsetf get (x y &optional ignored-arg) (store) (list 'put x y store))
|
|
|
2002 (defsetf get* (x y &optional ignored-arg) (store) (list 'put x y store))
|
|
|
2003 (defsetf gethash (x h &optional ignored-arg) (store) (list 'cl-puthash x store h))
|
|
|
2004 (defsetf nth (n x) (store) (list 'setcar (list 'nthcdr n x) store))
|
|
|
2005 (defsetf subseq (seq start &optional end) (new)
|
|
|
2006 (list 'progn (list 'replace seq new ':start1 start ':end1 end) new))
|
|
|
2007 (defsetf symbol-function fset)
|
|
|
2008 (defsetf symbol-plist setplist)
|
|
|
2009 (defsetf symbol-value set)
|
|
|
2010
|
|
|
2011 ;;; Various car/cdr aliases. Note that `cadr' is handled specially.
|
|
|
2012 (defsetf first setcar)
|
|
|
2013 (defsetf second (x) (store) (list 'setcar (list 'cdr x) store))
|
|
|
2014 (defsetf third (x) (store) (list 'setcar (list 'cddr x) store))
|
|
|
2015 (defsetf fourth (x) (store) (list 'setcar (list 'cdddr x) store))
|
|
|
2016 (defsetf fifth (x) (store) (list 'setcar (list 'nthcdr 4 x) store))
|
|
|
2017 (defsetf sixth (x) (store) (list 'setcar (list 'nthcdr 5 x) store))
|
|
|
2018 (defsetf seventh (x) (store) (list 'setcar (list 'nthcdr 6 x) store))
|
|
|
2019 (defsetf eighth (x) (store) (list 'setcar (list 'nthcdr 7 x) store))
|
|
|
2020 (defsetf ninth (x) (store) (list 'setcar (list 'nthcdr 8 x) store))
|
|
|
2021 (defsetf tenth (x) (store) (list 'setcar (list 'nthcdr 9 x) store))
|
|
|
2022 (defsetf rest setcdr)
|
|
|
2023
|
|
|
2024 ;;; Some more Emacs-related place types.
|
|
|
2025 (defsetf buffer-file-name set-visited-file-name t)
|
|
|
2026 (defsetf buffer-modified-p set-buffer-modified-p t)
|
|
|
2027 (defsetf buffer-name rename-buffer t)
|
|
|
2028 (defsetf buffer-string () (store)
|
|
|
2029 (list 'progn '(erase-buffer) (list 'insert store)))
|
|
|
2030 (defsetf buffer-substring cl-set-buffer-substring)
|
|
|
2031 (defsetf current-buffer set-buffer)
|
|
|
2032 (defsetf current-case-table set-case-table)
|
|
|
2033 (defsetf current-column move-to-column t)
|
|
|
2034 (defsetf current-global-map use-global-map t)
|
|
|
2035 (defsetf current-input-mode () (store)
|
|
|
2036 (list 'progn (list 'apply 'set-input-mode store) store))
|
|
|
2037 (defsetf current-local-map use-local-map t)
|
|
|
2038 (defsetf current-window-configuration set-window-configuration t)
|
|
|
2039 (defsetf default-file-modes set-default-file-modes t)
|
|
|
2040 (defsetf default-value set-default)
|
|
|
2041 (defsetf documentation-property put)
|
|
|
2042 (defsetf extent-face set-extent-face)
|
|
|
2043 (defsetf extent-priority set-extent-priority)
|
|
|
2044 (defsetf extent-property (x y &optional ignored-arg) (arg)
|
|
|
2045 (list 'set-extent-property x y arg))
|
|
|
2046 (defsetf extent-start-position (ext) (store)
|
|
|
2047 `(progn (set-extent-endpoints ,ext ,store (extent-end-position ,ext))
|
|
|
2048 ,store))
|
|
|
2049 (defsetf extent-end-position (ext) (store)
|
|
|
2050 `(progn (set-extent-endpoints ,ext (extent-start-position ,ext) ,store)
|
|
|
2051 ,store))
|
|
|
2052 (defsetf face-background (f &optional s) (x) (list 'set-face-background f x s))
|
|
|
2053 (defsetf face-background-pixmap (f &optional s) (x)
|
|
|
2054 (list 'set-face-background-pixmap f x s))
|
|
|
2055 (defsetf face-font (f &optional s) (x) (list 'set-face-font f x s))
|
|
|
2056 (defsetf face-foreground (f &optional s) (x) (list 'set-face-foreground f x s))
|
|
|
2057 (defsetf face-underline-p (f &optional s) (x)
|
|
|
2058 (list 'set-face-underline-p f x s))
|
|
|
2059 (defsetf file-modes set-file-modes t)
|
|
|
2060 (defsetf frame-parameters modify-frame-parameters t)
|
|
|
2061 (defsetf frame-visible-p cl-set-frame-visible-p)
|
|
|
2062 (defsetf frame-properties (&optional f) (p)
|
|
|
2063 `(progn (set-frame-properties ,f ,p) ,p))
|
|
|
2064 (defsetf frame-property (f p &optional ignored-arg) (v)
|
|
|
2065 `(progn (set-frame-property ,f ,v) ,p))
|
|
|
2066 (defsetf frame-width (&optional f) (v)
|
|
|
2067 `(progn (set-frame-width ,f ,v) ,v))
|
|
|
2068 (defsetf frame-height (&optional f) (v)
|
|
|
2069 `(progn (set-frame-height ,f ,v) ,v))
|
|
|
2070 (defsetf current-frame-configuration set-frame-configuration)
|
|
|
2071
|
|
|
2072 ;; XEmacs: new stuff
|
|
|
2073 ;; Consoles
|
|
|
2074 (defsetf selected-console select-console t)
|
|
|
2075 (defsetf selected-device select-device t)
|
|
|
2076 (defsetf device-baud-rate (&optional d) (v)
|
|
|
2077 `(set-device-baud-rate ,d ,v))
|
|
|
2078 ;; This setf method is a bad idea, because set-specifier *adds* a
|
|
|
2079 ;; specification, rather than just setting it. The net effect is that
|
|
|
2080 ;; it makes specifier-instance return VAL, but other things don't work
|
|
|
2081 ;; as expected -- letf, to name one.
|
|
|
2082 ;(defsetf specifier-instance (spec &optional dom def nof) (val)
|
|
|
2083 ; `(set-specifier ,spec ,val ,dom))
|
|
|
2084
|
|
|
2085 ;; Annotations
|
|
|
2086 (defsetf annotation-glyph set-annotation-glyph)
|
|
|
2087 (defsetf annotation-down-glyph set-annotation-down-glyph)
|
|
|
2088 (defsetf annotation-face set-annotation-face)
|
|
|
2089 (defsetf annotation-layout set-annotation-layout)
|
|
|
2090 (defsetf annotation-data set-annotation-data)
|
|
|
2091 (defsetf annotation-action set-annotation-action)
|
|
|
2092 (defsetf annotation-menu set-annotation-menu)
|
|
|
2093 ;; Widget
|
|
|
2094 (defsetf widget-get widget-put t)
|
|
|
2095 (defsetf widget-value widget-value-set t)
|
|
|
2096
|
|
|
2097 ;; Misc
|
|
|
2098 (defsetf recent-keys-ring-size set-recent-keys-ring-size)
|
|
|
2099 (defsetf symbol-value-in-buffer (s b &optional ignored-arg) (store)
|
|
|
2100 `(with-current-buffer ,b (set ,s ,store)))
|
|
|
2101 (defsetf symbol-value-in-console (s c &optional ignored-arg) (store)
|
|
|
2102 `(letf (((selected-console) ,c))
|
|
|
2103 (set ,s ,store)))
|
|
|
2104
|
|
|
2105 (defsetf buffer-dedicated-frame (&optional b) (v)
|
|
|
2106 `(set-buffer-dedicated-frame ,b ,v))
|
|
|
2107 (defsetf console-type-image-conversion-list
|
|
|
2108 set-console-type-image-conversion-list)
|
|
|
2109 (defsetf default-toolbar-position set-default-toolbar-position)
|
|
|
2110 (defsetf device-class (&optional d) (v)
|
|
|
2111 `(set-device-class ,d ,v))
|
|
|
2112 (defsetf extent-begin-glyph set-extent-begin-glyph)
|
|
|
2113 (defsetf extent-begin-glyph-layout set-extent-begin-glyph-layout)
|
|
|
2114 (defsetf extent-end-glyph set-extent-end-glyph)
|
|
|
2115 (defsetf extent-end-glyph-layout set-extent-end-glyph-layout)
|
|
|
2116 (defsetf extent-keymap set-extent-keymap)
|
|
|
2117 (defsetf extent-parent set-extent-parent)
|
|
|
2118 (defsetf extent-properties set-extent-properties)
|
|
|
2119 ;; Avoid adding various face and glyph functions.
|
|
|
2120 (defsetf frame-selected-window (&optional f) (v)
|
|
|
2121 `(set-frame-selected-window ,f ,v))
|
|
|
2122 (defsetf glyph-image (glyph &optional domain) (i)
|
|
|
2123 (list 'set-glyph-image glyph i domain))
|
|
|
2124 (defsetf itimer-function set-itimer-function)
|
|
|
2125 (defsetf itimer-function-arguments set-itimer-function-arguments)
|
|
|
2126 (defsetf itimer-is-idle set-itimer-is-idle)
|
|
|
2127 (defsetf itimer-recorded-run-time set-itimer-recorded-run-time)
|
|
|
2128 (defsetf itimer-restart set-itimer-restart)
|
|
|
2129 (defsetf itimer-uses-arguments set-itimer-uses-arguments)
|
|
|
2130 (defsetf itimer-value set-itimer-value)
|
|
|
2131 (defsetf keymap-parents set-keymap-parents)
|
|
|
2132 (defsetf marker-insertion-type set-marker-insertion-type)
|
|
|
2133 (defsetf mouse-pixel-position (&optional d) (v)
|
|
|
2134 `(progn
|
|
|
2135 (set-mouse-pixel-position ,d ,(car v) ,(car (cdr v)) ,(cdr (cdr v)))
|
|
|
2136 ,v))
|
|
|
2137 (defsetf trunc-stack-length set-trunc-stack-length)
|
|
|
2138 (defsetf trunc-stack-stack set-trunc-stack-stack)
|
|
|
2139 (defsetf undoable-stack-max set-undoable-stack-max)
|
|
|
2140 (defsetf weak-list-list set-weak-list-list)
|
|
|
2141
|
|
|
2142
|
|
|
2143 (defsetf getenv setenv t)
|
|
|
2144 (defsetf get-register set-register)
|
|
|
2145 (defsetf global-key-binding global-set-key)
|
|
|
2146 (defsetf keymap-parent set-keymap-parent)
|
|
|
2147 (defsetf keymap-name set-keymap-name)
|
|
|
2148 (defsetf keymap-prompt set-keymap-prompt)
|
|
|
2149 (defsetf keymap-default-binding set-keymap-default-binding)
|
|
|
2150 (defsetf local-key-binding local-set-key)
|
|
|
2151 (defsetf mark set-mark t)
|
|
|
2152 (defsetf mark-marker set-mark t)
|
|
|
2153 (defsetf marker-position set-marker t)
|
|
|
2154 (defsetf match-data store-match-data t)
|
|
|
2155 (defsetf mouse-position (scr) (store)
|
|
|
2156 (list 'set-mouse-position scr (list 'car store) (list 'cadr store)
|
|
|
2157 (list 'cddr store)))
|
|
|
2158 (defsetf overlay-get overlay-put)
|
|
|
2159 (defsetf overlay-start (ov) (store)
|
|
|
2160 (list 'progn (list 'move-overlay ov store (list 'overlay-end ov)) store))
|
|
|
2161 (defsetf overlay-end (ov) (store)
|
|
|
2162 (list 'progn (list 'move-overlay ov (list 'overlay-start ov) store) store))
|
|
|
2163 (defsetf point goto-char)
|
|
|
2164 (defsetf point-marker goto-char t)
|
|
|
2165 (defsetf point-max () (store)
|
|
|
2166 (list 'progn (list 'narrow-to-region '(point-min) store) store))
|
|
|
2167 (defsetf point-min () (store)
|
|
|
2168 (list 'progn (list 'narrow-to-region store '(point-max)) store))
|
|
|
2169 (defsetf process-buffer set-process-buffer)
|
|
|
2170 (defsetf process-filter set-process-filter)
|
|
|
2171 (defsetf process-sentinel set-process-sentinel)
|
|
|
2172 (defsetf read-mouse-position (scr) (store)
|
|
|
2173 (list 'set-mouse-position scr (list 'car store) (list 'cdr store)))
|
|
|
2174 (defsetf selected-window select-window)
|
|
|
2175 (defsetf selected-frame select-frame)
|
|
|
2176 (defsetf standard-case-table set-standard-case-table)
|
|
|
2177 (defsetf syntax-table set-syntax-table)
|
|
|
2178 (defsetf visited-file-modtime set-visited-file-modtime t)
|
|
|
2179 (defsetf window-buffer set-window-buffer t)
|
|
|
2180 (defsetf window-display-table set-window-display-table t)
|
|
|
2181 (defsetf window-dedicated-p set-window-dedicated-p t)
|
|
|
2182 (defsetf window-height (&optional window) (store)
|
|
|
2183 `(progn (enlarge-window (- ,store (window-height)) nil ,window) ,store))
|
|
|
2184 (defsetf window-hscroll set-window-hscroll)
|
|
|
2185 (defsetf window-point set-window-point)
|
|
|
2186 (defsetf window-start set-window-start)
|
|
|
2187 (defsetf window-width (&optional window) (store)
|
|
|
2188 `(progn (enlarge-window (- ,store (window-width)) t ,window) ,store))
|
|
|
2189 (defsetf x-get-cutbuffer x-store-cutbuffer t)
|
|
|
2190 (defsetf x-get-cut-buffer x-store-cut-buffer t) ; groan.
|
|
|
2191 (defsetf x-get-secondary-selection x-own-secondary-selection t)
|
|
|
2192 (defsetf x-get-selection x-own-selection t)
|
|
442
|
2193 (defsetf get-selection own-selection t)
|
|
428
|
2194
|
|
|
2195 ;;; More complex setf-methods.
|
|
|
2196 ;;; These should take &environment arguments, but since full arglists aren't
|
|
|
2197 ;;; available while compiling cl-macs, we fake it by referring to the global
|
|
|
2198 ;;; variable cl-macro-environment directly.
|
|
|
2199
|
|
|
2200 (define-setf-method apply (func arg1 &rest rest)
|
|
|
2201 (or (and (memq (car-safe func) '(quote function function*))
|
|
|
2202 (symbolp (car-safe (cdr-safe func))))
|
|
|
2203 (error "First arg to apply in setf is not (function SYM): %s" func))
|
|
|
2204 (let* ((form (cons (nth 1 func) (cons arg1 rest)))
|
|
|
2205 (method (get-setf-method form cl-macro-environment)))
|
|
|
2206 (list (car method) (nth 1 method) (nth 2 method)
|
|
|
2207 (cl-setf-make-apply (nth 3 method) (cadr func) (car method))
|
|
|
2208 (cl-setf-make-apply (nth 4 method) (cadr func) (car method)))))
|
|
|
2209
|
|
|
2210 (defun cl-setf-make-apply (form func temps)
|
|
|
2211 (if (eq (car form) 'progn)
|
|
|
2212 (list* 'progn (cl-setf-make-apply (cadr form) func temps) (cddr form))
|
|
|
2213 (or (equal (last form) (last temps))
|
|
|
2214 (error "%s is not suitable for use with setf-of-apply" func))
|
|
|
2215 (list* 'apply (list 'quote (car form)) (cdr form))))
|
|
|
2216
|
|
|
2217 (define-setf-method nthcdr (n place)
|
|
|
2218 (let ((method (get-setf-method place cl-macro-environment))
|
|
|
2219 (n-temp (gensym "--nthcdr-n--"))
|
|
|
2220 (store-temp (gensym "--nthcdr-store--")))
|
|
|
2221 (list (cons n-temp (car method))
|
|
|
2222 (cons n (nth 1 method))
|
|
|
2223 (list store-temp)
|
|
|
2224 (list 'let (list (list (car (nth 2 method))
|
|
|
2225 (list 'cl-set-nthcdr n-temp (nth 4 method)
|
|
|
2226 store-temp)))
|
|
|
2227 (nth 3 method) store-temp)
|
|
|
2228 (list 'nthcdr n-temp (nth 4 method)))))
|
|
|
2229
|
|
|
2230 (define-setf-method getf (place tag &optional def)
|
|
|
2231 (let ((method (get-setf-method place cl-macro-environment))
|
|
|
2232 (tag-temp (gensym "--getf-tag--"))
|
|
|
2233 (def-temp (gensym "--getf-def--"))
|
|
|
2234 (store-temp (gensym "--getf-store--")))
|
|
|
2235 (list (append (car method) (list tag-temp def-temp))
|
|
|
2236 (append (nth 1 method) (list tag def))
|
|
|
2237 (list store-temp)
|
|
|
2238 (list 'let (list (list (car (nth 2 method))
|
|
|
2239 (list 'cl-set-getf (nth 4 method)
|
|
|
2240 tag-temp store-temp)))
|
|
|
2241 (nth 3 method) store-temp)
|
|
|
2242 (list 'getf (nth 4 method) tag-temp def-temp))))
|
|
|
2243
|
|
|
2244 (define-setf-method substring (place from &optional to)
|
|
|
2245 (let ((method (get-setf-method place cl-macro-environment))
|
|
|
2246 (from-temp (gensym "--substring-from--"))
|
|
|
2247 (to-temp (gensym "--substring-to--"))
|
|
|
2248 (store-temp (gensym "--substring-store--")))
|
|
|
2249 (list (append (car method) (list from-temp to-temp))
|
|
|
2250 (append (nth 1 method) (list from to))
|
|
|
2251 (list store-temp)
|
|
|
2252 (list 'let (list (list (car (nth 2 method))
|
|
|
2253 (list 'cl-set-substring (nth 4 method)
|
|
|
2254 from-temp to-temp store-temp)))
|
|
|
2255 (nth 3 method) store-temp)
|
|
|
2256 (list 'substring (nth 4 method) from-temp to-temp))))
|
|
|
2257
|
|
|
2258 (define-setf-method values (&rest args)
|
|
|
2259 (let ((methods (mapcar #'(lambda (x)
|
|
|
2260 (get-setf-method x cl-macro-environment))
|
|
|
2261 args))
|
|
|
2262 (store-temp (gensym "--values-store--")))
|
|
|
2263 (list (apply 'append (mapcar 'first methods))
|
|
|
2264 (apply 'append (mapcar 'second methods))
|
|
|
2265 (list store-temp)
|
|
|
2266 (cons 'list
|
|
|
2267 (mapcar #'(lambda (m)
|
|
|
2268 (cl-setf-do-store (cons (car (third m)) (fourth m))
|
|
|
2269 (list 'pop store-temp)))
|
|
|
2270 methods))
|
|
|
2271 (cons 'list (mapcar 'fifth methods)))))
|
|
|
2272
|
|
|
2273 ;;; Getting and optimizing setf-methods.
|
|
|
2274 ;;;###autoload
|
|
|
2275 (defun get-setf-method (place &optional env)
|
|
|
2276 "Return a list of five values describing the setf-method for PLACE.
|
|
|
2277 PLACE may be any Lisp form which can appear as the PLACE argument to
|
|
|
2278 a macro like `setf' or `incf'."
|
|
|
2279 (if (symbolp place)
|
|
|
2280 (let ((temp (gensym "--setf--")))
|
|
|
2281 (list nil nil (list temp) (list 'setq place temp) place))
|
|
|
2282 (or (and (symbolp (car place))
|
|
|
2283 (let* ((func (car place))
|
|
|
2284 (name (symbol-name func))
|
|
|
2285 (method (get func 'setf-method))
|
|
|
2286 (case-fold-search nil))
|
|
|
2287 (or (and method
|
|
|
2288 (let ((cl-macro-environment env))
|
|
|
2289 (setq method (apply method (cdr place))))
|
|
|
2290 (if (and (consp method) (= (length method) 5))
|
|
|
2291 method
|
|
|
2292 (error "Setf-method for %s returns malformed method"
|
|
|
2293 func)))
|
|
|
2294 (and (save-match-data
|
|
|
2295 (string-match "\\`c[ad][ad][ad]?[ad]?r\\'" name))
|
|
|
2296 (get-setf-method (compiler-macroexpand place)))
|
|
|
2297 (and (eq func 'edebug-after)
|
|
|
2298 (get-setf-method (nth (1- (length place)) place)
|
|
|
2299 env)))))
|
|
|
2300 (if (eq place (setq place (macroexpand place env)))
|
|
|
2301 (if (and (symbolp (car place)) (fboundp (car place))
|
|
|
2302 (symbolp (symbol-function (car place))))
|
|
|
2303 (get-setf-method (cons (symbol-function (car place))
|
|
|
2304 (cdr place)) env)
|
|
|
2305 (error "No setf-method known for %s" (car place)))
|
|
|
2306 (get-setf-method place env)))))
|
|
|
2307
|
|
|
2308 (defun cl-setf-do-modify (place opt-expr)
|
|
|
2309 (let* ((method (get-setf-method place cl-macro-environment))
|
|
|
2310 (temps (car method)) (values (nth 1 method))
|
|
|
2311 (lets nil) (subs nil)
|
|
|
2312 (optimize (and (not (eq opt-expr 'no-opt))
|
|
|
2313 (or (and (not (eq opt-expr 'unsafe))
|
|
|
2314 (cl-safe-expr-p opt-expr))
|
|
|
2315 (cl-setf-simple-store-p (car (nth 2 method))
|
|
|
2316 (nth 3 method)))))
|
|
|
2317 (simple (and optimize (consp place) (cl-simple-exprs-p (cdr place)))))
|
|
|
2318 (while values
|
|
|
2319 (if (or simple (cl-const-expr-p (car values)))
|
|
|
2320 (cl-push (cons (cl-pop temps) (cl-pop values)) subs)
|
|
|
2321 (cl-push (list (cl-pop temps) (cl-pop values)) lets)))
|
|
|
2322 (list (nreverse lets)
|
|
|
2323 (cons (car (nth 2 method)) (sublis subs (nth 3 method)))
|
|
|
2324 (sublis subs (nth 4 method)))))
|
|
|
2325
|
|
|
2326 (defun cl-setf-do-store (spec val)
|
|
|
2327 (let ((sym (car spec))
|
|
|
2328 (form (cdr spec)))
|
|
|
2329 (if (or (cl-const-expr-p val)
|
|
|
2330 (and (cl-simple-expr-p val) (eq (cl-expr-contains form sym) 1))
|
|
|
2331 (cl-setf-simple-store-p sym form))
|
|
|
2332 (subst val sym form)
|
|
|
2333 (list 'let (list (list sym val)) form))))
|
|
|
2334
|
|
|
2335 (defun cl-setf-simple-store-p (sym form)
|
|
|
2336 (and (consp form) (eq (cl-expr-contains form sym) 1)
|
|
|
2337 (eq (nth (1- (length form)) form) sym)
|
|
|
2338 (symbolp (car form)) (fboundp (car form))
|
|
|
2339 (not (eq (car-safe (symbol-function (car form))) 'macro))))
|
|
|
2340
|
|
|
2341 ;;; The standard modify macros.
|
|
|
2342 ;;;###autoload
|
|
|
2343 (defmacro setf (&rest args)
|
|
|
2344 "(setf PLACE VAL PLACE VAL ...): set each PLACE to the value of its VAL.
|
|
|
2345 This is a generalized version of `setq'; the PLACEs may be symbolic
|
|
|
2346 references such as (car x) or (aref x i), as well as plain symbols.
|
|
|
2347 For example, (setf (cadar x) y) is equivalent to (setcar (cdar x) y).
|
|
|
2348 The return value is the last VAL in the list."
|
|
|
2349 (if (cdr (cdr args))
|
|
|
2350 (let ((sets nil))
|
|
|
2351 (while args (cl-push (list 'setf (cl-pop args) (cl-pop args)) sets))
|
|
|
2352 (cons 'progn (nreverse sets)))
|
|
|
2353 (if (symbolp (car args))
|
|
|
2354 (and args (cons 'setq args))
|
|
|
2355 (let* ((method (cl-setf-do-modify (car args) (nth 1 args)))
|
|
|
2356 (store (cl-setf-do-store (nth 1 method) (nth 1 args))))
|
|
|
2357 (if (car method) (list 'let* (car method) store) store)))))
|
|
|
2358
|
|
|
2359 ;;;###autoload
|
|
|
2360 (defmacro psetf (&rest args)
|
|
|
2361 "(psetf PLACE VAL PLACE VAL ...): set PLACEs to the values VALs in parallel.
|
|
|
2362 This is like `setf', except that all VAL forms are evaluated (in order)
|
|
|
2363 before assigning any PLACEs to the corresponding values."
|
|
|
2364 (let ((p args) (simple t) (vars nil))
|
|
|
2365 (while p
|
|
|
2366 (if (or (not (symbolp (car p))) (cl-expr-depends-p (nth 1 p) vars))
|
|
|
2367 (setq simple nil))
|
|
|
2368 (if (memq (car p) vars)
|
|
|
2369 (error "Destination duplicated in psetf: %s" (car p)))
|
|
|
2370 (cl-push (cl-pop p) vars)
|
|
|
2371 (or p (error "Odd number of arguments to psetf"))
|
|
|
2372 (cl-pop p))
|
|
|
2373 (if simple
|
|
|
2374 (list 'progn (cons 'setf args) nil)
|
|
|
2375 (setq args (reverse args))
|
|
|
2376 (let ((expr (list 'setf (cadr args) (car args))))
|
|
|
2377 (while (setq args (cddr args))
|
|
|
2378 (setq expr (list 'setf (cadr args) (list 'prog1 (car args) expr))))
|
|
|
2379 (list 'progn expr nil)))))
|
|
|
2380
|
|
|
2381 ;;;###autoload
|
|
|
2382 (defun cl-do-pop (place)
|
|
|
2383 (if (cl-simple-expr-p place)
|
|
|
2384 (list 'prog1 (list 'car place) (list 'setf place (list 'cdr place)))
|
|
|
2385 (let* ((method (cl-setf-do-modify place t))
|
|
|
2386 (temp (gensym "--pop--")))
|
|
|
2387 (list 'let*
|
|
|
2388 (append (car method)
|
|
|
2389 (list (list temp (nth 2 method))))
|
|
|
2390 (list 'prog1
|
|
|
2391 (list 'car temp)
|
|
|
2392 (cl-setf-do-store (nth 1 method) (list 'cdr temp)))))))
|
|
|
2393
|
|
|
2394 ;;;###autoload
|
|
|
2395 (defmacro remf (place tag)
|
|
|
2396 "(remf PLACE TAG): remove TAG from property list PLACE.
|
|
|
2397 PLACE may be a symbol, or any generalized variable allowed by `setf'.
|
|
|
2398 The form returns true if TAG was found and removed, nil otherwise."
|
|
|
2399 (let* ((method (cl-setf-do-modify place t))
|
|
|
2400 (tag-temp (and (not (cl-const-expr-p tag)) (gensym "--remf-tag--")))
|
|
|
2401 (val-temp (and (not (cl-simple-expr-p place))
|
|
|
2402 (gensym "--remf-place--")))
|
|
|
2403 (ttag (or tag-temp tag))
|
|
|
2404 (tval (or val-temp (nth 2 method))))
|
|
|
2405 (list 'let*
|
|
|
2406 (append (car method)
|
|
|
2407 (and val-temp (list (list val-temp (nth 2 method))))
|
|
|
2408 (and tag-temp (list (list tag-temp tag))))
|
|
|
2409 (list 'if (list 'eq ttag (list 'car tval))
|
|
|
2410 (list 'progn
|
|
|
2411 (cl-setf-do-store (nth 1 method) (list 'cddr tval))
|
|
|
2412 t)
|
|
|
2413 (list 'cl-do-remf tval ttag)))))
|
|
|
2414
|
|
|
2415 ;;;###autoload
|
|
|
2416 (defmacro shiftf (place &rest args)
|
|
|
2417 "(shiftf PLACE PLACE... VAL): shift left among PLACEs.
|
|
|
2418 Example: (shiftf A B C) sets A to B, B to C, and returns the old A.
|
|
|
2419 Each PLACE may be a symbol, or any generalized variable allowed by `setf'."
|
|
|
2420 (if (not (memq nil (mapcar 'symbolp (butlast (cons place args)))))
|
|
|
2421 (list* 'prog1 place
|
|
|
2422 (let ((sets nil))
|
|
|
2423 (while args
|
|
|
2424 (cl-push (list 'setq place (car args)) sets)
|
|
|
2425 (setq place (cl-pop args)))
|
|
|
2426 (nreverse sets)))
|
|
|
2427 (let* ((places (reverse (cons place args)))
|
|
|
2428 (form (cl-pop places)))
|
|
|
2429 (while places
|
|
|
2430 (let ((method (cl-setf-do-modify (cl-pop places) 'unsafe)))
|
|
|
2431 (setq form (list 'let* (car method)
|
|
|
2432 (list 'prog1 (nth 2 method)
|
|
|
2433 (cl-setf-do-store (nth 1 method) form))))))
|
|
|
2434 form)))
|
|
|
2435
|
|
|
2436 ;;;###autoload
|
|
|
2437 (defmacro rotatef (&rest args)
|
|
|
2438 "(rotatef PLACE...): rotate left among PLACEs.
|
|
|
2439 Example: (rotatef A B C) sets A to B, B to C, and C to A. It returns nil.
|
|
|
2440 Each PLACE may be a symbol, or any generalized variable allowed by `setf'."
|
|
|
2441 (if (not (memq nil (mapcar 'symbolp args)))
|
|
|
2442 (and (cdr args)
|
|
|
2443 (let ((sets nil)
|
|
|
2444 (first (car args)))
|
|
|
2445 (while (cdr args)
|
|
|
2446 (setq sets (nconc sets (list (cl-pop args) (car args)))))
|
|
|
2447 (nconc (list 'psetf) sets (list (car args) first))))
|
|
|
2448 (let* ((places (reverse args))
|
|
|
2449 (temp (gensym "--rotatef--"))
|
|
|
2450 (form temp))
|
|
|
2451 (while (cdr places)
|
|
|
2452 (let ((method (cl-setf-do-modify (cl-pop places) 'unsafe)))
|
|
|
2453 (setq form (list 'let* (car method)
|
|
|
2454 (list 'prog1 (nth 2 method)
|
|
|
2455 (cl-setf-do-store (nth 1 method) form))))))
|
|
|
2456 (let ((method (cl-setf-do-modify (car places) 'unsafe)))
|
|
|
2457 (list 'let* (append (car method) (list (list temp (nth 2 method))))
|
|
|
2458 (cl-setf-do-store (nth 1 method) form) nil)))))
|
|
|
2459
|
|
|
2460 ;;;###autoload
|
|
|
2461 (defmacro letf (bindings &rest body)
|
|
|
2462 "(letf ((PLACE VALUE) ...) BODY...): temporarily bind to PLACEs.
|
|
|
2463 This is the analogue of `let', but with generalized variables (in the
|
|
|
2464 sense of `setf') for the PLACEs. Each PLACE is set to the corresponding
|
|
|
2465 VALUE, then the BODY forms are executed. On exit, either normally or
|
|
|
2466 because of a `throw' or error, the PLACEs are set back to their original
|
|
|
2467 values. Note that this macro is *not* available in Common Lisp.
|
|
|
2468 As a special case, if `(PLACE)' is used instead of `(PLACE VALUE)',
|
|
|
2469 the PLACE is not modified before executing BODY."
|
|
|
2470 (if (and (not (cdr bindings)) (cdar bindings) (symbolp (caar bindings)))
|
|
|
2471 (list* 'let bindings body)
|
|
|
2472 (let ((lets nil)
|
|
|
2473 (rev (reverse bindings)))
|
|
|
2474 (while rev
|
|
|
2475 (let* ((place (if (symbolp (caar rev))
|
|
|
2476 (list 'symbol-value (list 'quote (caar rev)))
|
|
|
2477 (caar rev)))
|
|
|
2478 (value (cadar rev))
|
|
|
2479 (method (cl-setf-do-modify place 'no-opt))
|
|
|
2480 (save (gensym "--letf-save--"))
|
|
|
2481 (bound (and (memq (car place) '(symbol-value symbol-function))
|
|
|
2482 (gensym "--letf-bound--")))
|
|
|
2483 (temp (and (not (cl-const-expr-p value)) (cdr bindings)
|
|
|
2484 (gensym "--letf-val--"))))
|
|
|
2485 (setq lets (nconc (car method)
|
|
|
2486 (if bound
|
|
|
2487 (list (list bound
|
|
|
2488 (list (if (eq (car place)
|
|
|
2489 'symbol-value)
|
|
|
2490 'boundp 'fboundp)
|
|
|
2491 (nth 1 (nth 2 method))))
|
|
|
2492 (list save (list 'and bound
|
|
|
2493 (nth 2 method))))
|
|
|
2494 (list (list save (nth 2 method))))
|
|
|
2495 (and temp (list (list temp value)))
|
|
|
2496 lets)
|
|
|
2497 body (list
|
|
|
2498 (list 'unwind-protect
|
|
|
2499 (cons 'progn
|
|
|
2500 (if (cdr (car rev))
|
|
|
2501 (cons (cl-setf-do-store (nth 1 method)
|
|
|
2502 (or temp value))
|
|
|
2503 body)
|
|
|
2504 body))
|
|
|
2505 (if bound
|
|
|
2506 (list 'if bound
|
|
|
2507 (cl-setf-do-store (nth 1 method) save)
|
|
|
2508 (list (if (eq (car place) 'symbol-value)
|
|
|
2509 'makunbound 'fmakunbound)
|
|
|
2510 (nth 1 (nth 2 method))))
|
|
|
2511 (cl-setf-do-store (nth 1 method) save))))
|
|
|
2512 rev (cdr rev))))
|
|
|
2513 (list* 'let* lets body))))
|
|
|
2514
|
|
|
2515 ;;;###autoload
|
|
|
2516 (defmacro letf* (bindings &rest body)
|
|
|
2517 "(letf* ((PLACE VALUE) ...) BODY...): temporarily bind to PLACEs.
|
|
|
2518 This is the analogue of `let*', but with generalized variables (in the
|
|
|
2519 sense of `setf') for the PLACEs. Each PLACE is set to the corresponding
|
|
|
2520 VALUE, then the BODY forms are executed. On exit, either normally or
|
|
|
2521 because of a `throw' or error, the PLACEs are set back to their original
|
|
|
2522 values. Note that this macro is *not* available in Common Lisp.
|
|
|
2523 As a special case, if `(PLACE)' is used instead of `(PLACE VALUE)',
|
|
|
2524 the PLACE is not modified before executing BODY."
|
|
|
2525 (if (null bindings)
|
|
|
2526 (cons 'progn body)
|
|
|
2527 (setq bindings (reverse bindings))
|
|
|
2528 (while bindings
|
|
|
2529 (setq body (list (list* 'letf (list (cl-pop bindings)) body))))
|
|
|
2530 (car body)))
|
|
|
2531
|
|
|
2532 ;;;###autoload
|
|
|
2533 (defmacro callf (func place &rest args)
|
|
|
2534 "(callf FUNC PLACE ARGS...): set PLACE to (FUNC PLACE ARGS...).
|
|
|
2535 FUNC should be an unquoted function name. PLACE may be a symbol,
|
|
|
2536 or any generalized variable allowed by `setf'."
|
|
|
2537 (let* ((method (cl-setf-do-modify place (cons 'list args)))
|
|
|
2538 (rargs (cons (nth 2 method) args)))
|
|
|
2539 (list 'let* (car method)
|
|
|
2540 (cl-setf-do-store (nth 1 method)
|
|
|
2541 (if (symbolp func) (cons func rargs)
|
|
|
2542 (list* 'funcall (list 'function func)
|
|
|
2543 rargs))))))
|
|
|
2544
|
|
|
2545 ;;;###autoload
|
|
|
2546 (defmacro callf2 (func arg1 place &rest args)
|
|
|
2547 "(callf2 FUNC ARG1 PLACE ARGS...): set PLACE to (FUNC ARG1 PLACE ARGS...).
|
|
|
2548 Like `callf', but PLACE is the second argument of FUNC, not the first."
|
|
|
2549 (if (and (cl-safe-expr-p arg1) (cl-simple-expr-p place) (symbolp func))
|
|
|
2550 (list 'setf place (list* func arg1 place args))
|
|
|
2551 (let* ((method (cl-setf-do-modify place (cons 'list args)))
|
|
|
2552 (temp (and (not (cl-const-expr-p arg1)) (gensym "--arg1--")))
|
|
|
2553 (rargs (list* (or temp arg1) (nth 2 method) args)))
|
|
|
2554 (list 'let* (append (and temp (list (list temp arg1))) (car method))
|
|
|
2555 (cl-setf-do-store (nth 1 method)
|
|
|
2556 (if (symbolp func) (cons func rargs)
|
|
|
2557 (list* 'funcall (list 'function func)
|
|
|
2558 rargs)))))))
|
|
|
2559
|
|
|
2560 ;;;###autoload
|
|
|
2561 (defmacro define-modify-macro (name arglist func &optional doc)
|
|
|
2562 "(define-modify-macro NAME ARGLIST FUNC): define a `setf'-like modify macro.
|
|
|
2563 If NAME is called, it combines its PLACE argument with the other arguments
|
|
|
2564 from ARGLIST using FUNC: (define-modify-macro incf (&optional (n 1)) +)"
|
|
|
2565 (if (memq '&key arglist) (error "&key not allowed in define-modify-macro"))
|
|
|
2566 (let ((place (gensym "--place--")))
|
|
|
2567 (list 'defmacro* name (cons place arglist) doc
|
|
|
2568 (list* (if (memq '&rest arglist) 'list* 'list)
|
|
|
2569 '(quote callf) (list 'quote func) place
|
|
|
2570 (cl-arglist-args arglist)))))
|
|
|
2571
|
|
|
2572
|
|
|
2573 ;;; Structures.
|
|
|
2574
|
|
|
2575 ;;;###autoload
|
|
|
2576 (defmacro defstruct (struct &rest descs)
|
|
|
2577 "(defstruct (NAME OPTIONS...) (SLOT SLOT-OPTS...)...): define a struct type.
|
|
|
2578 This macro defines a new Lisp data type called NAME, which contains data
|
|
|
2579 stored in SLOTs. This defines a `make-NAME' constructor, a `copy-NAME'
|
|
|
2580 copier, a `NAME-p' predicate, and setf-able `NAME-SLOT' accessors."
|
|
|
2581 (let* ((name (if (consp struct) (car struct) struct))
|
|
|
2582 (opts (cdr-safe struct))
|
|
|
2583 (slots nil)
|
|
|
2584 (defaults nil)
|
|
|
2585 (conc-name (concat (symbol-name name) "-"))
|
|
|
2586 (constructor (intern (format "make-%s" name)))
|
|
|
2587 (constrs nil)
|
|
|
2588 (copier (intern (format "copy-%s" name)))
|
|
|
2589 (predicate (intern (format "%s-p" name)))
|
|
|
2590 (print-func nil) (print-auto nil)
|
|
|
2591 (safety (if (cl-compiling-file) cl-optimize-safety 3))
|
|
|
2592 (include nil)
|
|
|
2593 (tag (intern (format "cl-struct-%s" name)))
|
|
|
2594 (tag-symbol (intern (format "cl-struct-%s-tags" name)))
|
|
|
2595 (include-descs nil)
|
|
|
2596 (side-eff nil)
|
|
|
2597 (type nil)
|
|
|
2598 (named nil)
|
|
|
2599 (forms nil)
|
|
|
2600 pred-form pred-check)
|
|
|
2601 (if (stringp (car descs))
|
|
|
2602 (cl-push (list 'put (list 'quote name) '(quote structure-documentation)
|
|
|
2603 (cl-pop descs)) forms))
|
|
|
2604 (setq descs (cons '(cl-tag-slot)
|
|
|
2605 (mapcar #'(lambda (x) (if (consp x) x (list x)))
|
|
|
2606 descs)))
|
|
|
2607 (while opts
|
|
|
2608 (let ((opt (if (consp (car opts)) (caar opts) (car opts)))
|
|
|
2609 (args (cdr-safe (cl-pop opts))))
|
|
|
2610 (cond ((eq opt ':conc-name)
|
|
|
2611 (if args
|
|
|
2612 (setq conc-name (if (car args)
|
|
|
2613 (symbol-name (car args)) ""))))
|
|
|
2614 ((eq opt ':constructor)
|
|
|
2615 (if (cdr args)
|
|
|
2616 (cl-push args constrs)
|
|
|
2617 (if args (setq constructor (car args)))))
|
|
|
2618 ((eq opt ':copier)
|
|
|
2619 (if args (setq copier (car args))))
|
|
|
2620 ((eq opt ':predicate)
|
|
|
2621 (if args (setq predicate (car args))))
|
|
|
2622 ((eq opt ':include)
|
|
|
2623 (setq include (car args)
|
|
|
2624 include-descs (mapcar #'(lambda (x)
|
|
|
2625 (if (consp x) x (list x)))
|
|
|
2626 (cdr args))))
|
|
|
2627 ((eq opt ':print-function)
|
|
|
2628 (setq print-func (car args)))
|
|
|
2629 ((eq opt ':type)
|
|
|
2630 (setq type (car args)))
|
|
|
2631 ((eq opt ':named)
|
|
|
2632 (setq named t))
|
|
|
2633 ((eq opt ':initial-offset)
|
|
|
2634 (setq descs (nconc (make-list (car args) '(cl-skip-slot))
|
|
|
2635 descs)))
|
|
|
2636 (t
|
|
|
2637 (error "Slot option %s unrecognized" opt)))))
|
|
|
2638 (if print-func
|
|
|
2639 (setq print-func (list 'progn
|
|
|
2640 (list 'funcall (list 'function print-func)
|
|
|
2641 'cl-x 'cl-s 'cl-n) t))
|
|
|
2642 (or type (and include (not (get include 'cl-struct-print)))
|
|
|
2643 (setq print-auto t
|
|
|
2644 print-func (and (or (not (or include type)) (null print-func))
|
|
|
2645 (list 'progn
|
|
|
2646 (list 'princ (format "#S(%s" name)
|
|
|
2647 'cl-s))))))
|
|
|
2648 (if include
|
|
|
2649 (let ((inc-type (get include 'cl-struct-type))
|
|
|
2650 (old-descs (get include 'cl-struct-slots)))
|
|
|
2651 (or inc-type (error "%s is not a struct name" include))
|
|
|
2652 (and type (not (eq (car inc-type) type))
|
|
|
2653 (error ":type disagrees with :include for %s" name))
|
|
|
2654 (while include-descs
|
|
|
2655 (setcar (memq (or (assq (caar include-descs) old-descs)
|
|
|
2656 (error "No slot %s in included struct %s"
|
|
|
2657 (caar include-descs) include))
|
|
|
2658 old-descs)
|
|
|
2659 (cl-pop include-descs)))
|
|
|
2660 (setq descs (append old-descs (delq (assq 'cl-tag-slot descs) descs))
|
|
|
2661 type (car inc-type)
|
|
|
2662 named (assq 'cl-tag-slot descs))
|
|
|
2663 (if (cadr inc-type) (setq tag name named t))
|
|
|
2664 (let ((incl include))
|
|
|
2665 (while incl
|
|
|
2666 (cl-push (list 'pushnew (list 'quote tag)
|
|
|
2667 (intern (format "cl-struct-%s-tags" incl)))
|
|
|
2668 forms)
|
|
|
2669 (setq incl (get incl 'cl-struct-include)))))
|
|
|
2670 (if type
|
|
|
2671 (progn
|
|
|
2672 (or (memq type '(vector list))
|
|
|
2673 (error "Illegal :type specifier: %s" type))
|
|
|
2674 (if named (setq tag name)))
|
|
|
2675 (setq type 'vector named 'true)))
|
|
|
2676 (or named (setq descs (delq (assq 'cl-tag-slot descs) descs)))
|
|
|
2677 (cl-push (list 'defvar tag-symbol) forms)
|
|
|
2678 (setq pred-form (and named
|
|
|
2679 (let ((pos (- (length descs)
|
|
|
2680 (length (memq (assq 'cl-tag-slot descs)
|
|
|
2681 descs)))))
|
|
|
2682 (if (eq type 'vector)
|
|
|
2683 (list 'and '(vectorp cl-x)
|
|
|
2684 (list '>= '(length cl-x) (length descs))
|
|
|
2685 (list 'memq (list 'aref 'cl-x pos)
|
|
|
2686 tag-symbol))
|
|
|
2687 (if (= pos 0)
|
|
|
2688 (list 'memq '(car-safe cl-x) tag-symbol)
|
|
|
2689 (list 'and '(consp cl-x)
|
|
|
2690 (list 'memq (list 'nth pos 'cl-x)
|
|
|
2691 tag-symbol))))))
|
|
|
2692 pred-check (and pred-form (> safety 0)
|
|
|
2693 (if (and (eq (caadr pred-form) 'vectorp)
|
|
|
2694 (= safety 1))
|
|
|
2695 (cons 'and (cdddr pred-form)) pred-form)))
|
|
|
2696 (let ((pos 0) (descp descs))
|
|
|
2697 (while descp
|
|
|
2698 (let* ((desc (cl-pop descp))
|
|
|
2699 (slot (car desc)))
|
|
|
2700 (if (memq slot '(cl-tag-slot cl-skip-slot))
|
|
|
2701 (progn
|
|
|
2702 (cl-push nil slots)
|
|
|
2703 (cl-push (and (eq slot 'cl-tag-slot) (list 'quote tag))
|
|
|
2704 defaults))
|
|
|
2705 (if (assq slot descp)
|
|
|
2706 (error "Duplicate slots named %s in %s" slot name))
|
|
|
2707 (let ((accessor (intern (format "%s%s" conc-name slot))))
|
|
|
2708 (cl-push slot slots)
|
|
|
2709 (cl-push (nth 1 desc) defaults)
|
|
|
2710 (cl-push (list*
|
|
|
2711 'defsubst* accessor '(cl-x)
|
|
|
2712 (append
|
|
|
2713 (and pred-check
|
|
|
2714 (list (list 'or pred-check
|
|
|
2715 (list 'error
|
|
|
2716 (format "%s accessing a non-%s"
|
|
|
2717 accessor name)
|
|
|
2718 'cl-x))))
|
|
|
2719 (list (if (eq type 'vector) (list 'aref 'cl-x pos)
|
|
|
2720 (if (= pos 0) '(car cl-x)
|
|
|
2721 (list 'nth pos 'cl-x)))))) forms)
|
|
|
2722 (cl-push (cons accessor t) side-eff)
|
|
|
2723 (cl-push (list 'define-setf-method accessor '(cl-x)
|
|
|
2724 (if (cadr (memq ':read-only (cddr desc)))
|
|
|
2725 (list 'error (format "%s is a read-only slot"
|
|
|
2726 accessor))
|
|
|
2727 (list 'cl-struct-setf-expander 'cl-x
|
|
|
2728 (list 'quote name) (list 'quote accessor)
|
|
|
2729 (and pred-check (list 'quote pred-check))
|
|
|
2730 pos)))
|
|
|
2731 forms)
|
|
|
2732 (if print-auto
|
|
|
2733 (nconc print-func
|
|
|
2734 (list (list 'princ (format " %s" slot) 'cl-s)
|
|
|
2735 (list 'prin1 (list accessor 'cl-x) 'cl-s)))))))
|
|
|
2736 (setq pos (1+ pos))))
|
|
|
2737 (setq slots (nreverse slots)
|
|
|
2738 defaults (nreverse defaults))
|
|
|
2739 (and predicate pred-form
|
|
|
2740 (progn (cl-push (list 'defsubst* predicate '(cl-x)
|
|
|
2741 (if (eq (car pred-form) 'and)
|
|
|
2742 (append pred-form '(t))
|
|
|
2743 (list 'and pred-form t))) forms)
|
|
|
2744 (cl-push (cons predicate 'error-free) side-eff)))
|
|
|
2745 (and copier
|
|
|
2746 (progn (cl-push (list 'defun copier '(x) '(copy-sequence x)) forms)
|
|
|
2747 (cl-push (cons copier t) side-eff)))
|
|
|
2748 (if constructor
|
|
|
2749 (cl-push (list constructor
|
|
|
2750 (cons '&key (delq nil (copy-sequence slots))))
|
|
|
2751 constrs))
|
|
|
2752 (while constrs
|
|
|
2753 (let* ((name (caar constrs))
|
|
|
2754 (args (cadr (cl-pop constrs)))
|
|
|
2755 (anames (cl-arglist-args args))
|
|
|
2756 (make (mapcar* #'(lambda (s d) (if (memq s anames) s d))
|
|
|
2757 slots defaults)))
|
|
|
2758 (cl-push (list 'defsubst* name
|
|
|
2759 (list* '&cl-defs (list 'quote (cons nil descs)) args)
|
|
|
2760 (cons type make)) forms)
|
|
|
2761 (if (cl-safe-expr-p (cons 'progn (mapcar 'second descs)))
|
|
|
2762 (cl-push (cons name t) side-eff))))
|
|
|
2763 (if print-auto (nconc print-func (list '(princ ")" cl-s) t)))
|
|
|
2764 (if print-func
|
|
|
2765 (cl-push (list 'push
|
|
|
2766 (list 'function
|
|
|
2767 (list 'lambda '(cl-x cl-s cl-n)
|
|
|
2768 (list 'and pred-form print-func)))
|
|
|
2769 'custom-print-functions) forms))
|
|
|
2770 (cl-push (list 'setq tag-symbol (list 'list (list 'quote tag))) forms)
|
|
|
2771 (cl-push (list* 'eval-when '(compile load eval)
|
|
|
2772 (list 'put (list 'quote name) '(quote cl-struct-slots)
|
|
|
2773 (list 'quote descs))
|
|
|
2774 (list 'put (list 'quote name) '(quote cl-struct-type)
|
|
|
2775 (list 'quote (list type (eq named t))))
|
|
|
2776 (list 'put (list 'quote name) '(quote cl-struct-include)
|
|
|
2777 (list 'quote include))
|
|
|
2778 (list 'put (list 'quote name) '(quote cl-struct-print)
|
|
|
2779 print-auto)
|
|
|
2780 (mapcar #'(lambda (x)
|
|
|
2781 (list 'put (list 'quote (car x))
|
|
|
2782 '(quote side-effect-free)
|
|
|
2783 (list 'quote (cdr x))))
|
|
|
2784 side-eff))
|
|
|
2785 forms)
|
|
|
2786 (cons 'progn (nreverse (cons (list 'quote name) forms)))))
|
|
|
2787
|
|
|
2788 ;;;###autoload
|
|
|
2789 (defun cl-struct-setf-expander (x name accessor pred-form pos)
|
|
|
2790 (let* ((temp (gensym "--x--")) (store (gensym "--store--")))
|
|
|
2791 (list (list temp) (list x) (list store)
|
|
|
2792 (append '(progn)
|
|
|
2793 (and pred-form
|
|
|
2794 (list (list 'or (subst temp 'cl-x pred-form)
|
|
|
2795 (list 'error
|
|
|
2796 (format
|
|
|
2797 "%s storing a non-%s" accessor name)
|
|
|
2798 temp))))
|
|
|
2799 (list (if (eq (car (get name 'cl-struct-type)) 'vector)
|
|
|
2800 (list 'aset temp pos store)
|
|
|
2801 (list 'setcar
|
|
|
2802 (if (<= pos 5)
|
|
|
2803 (let ((xx temp))
|
|
|
2804 (while (>= (setq pos (1- pos)) 0)
|
|
|
2805 (setq xx (list 'cdr xx)))
|
|
|
2806 xx)
|
|
|
2807 (list 'nthcdr pos temp))
|
|
|
2808 store))))
|
|
|
2809 (list accessor temp))))
|
|
|
2810
|
|
|
2811
|
|
|
2812 ;;; Types and assertions.
|
|
|
2813
|
|
|
2814 ;;;###autoload
|
|
|
2815 (defmacro deftype (name args &rest body)
|
|
|
2816 "(deftype NAME ARGLIST BODY...): define NAME as a new data type.
|
|
|
2817 The type name can then be used in `typecase', `check-type', etc."
|
|
|
2818 (list 'eval-when '(compile load eval)
|
|
|
2819 (cl-transform-function-property
|
|
|
2820 name 'cl-deftype-handler (cons (list* '&cl-defs ''('*) args) body))))
|
|
|
2821
|
|
|
2822 (defun cl-make-type-test (val type)
|
|
|
2823 (if (symbolp type)
|
|
|
2824 (cond ((get type 'cl-deftype-handler)
|
|
|
2825 (cl-make-type-test val (funcall (get type 'cl-deftype-handler))))
|
|
|
2826 ((memq type '(nil t)) type)
|
|
|
2827 ((eq type 'string-char) (list 'characterp val))
|
|
|
2828 ((eq type 'null) (list 'null val))
|
|
|
2829 ((eq type 'float) (list 'floatp-safe val))
|
|
|
2830 ((eq type 'real) (list 'numberp val))
|
|
|
2831 ((eq type 'fixnum) (list 'integerp val))
|
|
|
2832 (t
|
|
|
2833 (let* ((name (symbol-name type))
|
|
|
2834 (namep (intern (concat name "p"))))
|
|
|
2835 (if (fboundp namep) (list namep val)
|
|
|
2836 (list (intern (concat name "-p")) val)))))
|
|
|
2837 (cond ((get (car type) 'cl-deftype-handler)
|
|
|
2838 (cl-make-type-test val (apply (get (car type) 'cl-deftype-handler)
|
|
|
2839 (cdr type))))
|
|
|
2840 ((memq (car-safe type) '(integer float real number))
|
|
|
2841 (delq t (list 'and (cl-make-type-test val (car type))
|
|
|
2842 (if (memq (cadr type) '(* nil)) t
|
|
|
2843 (if (consp (cadr type)) (list '> val (caadr type))
|
|
|
2844 (list '>= val (cadr type))))
|
|
|
2845 (if (memq (caddr type) '(* nil)) t
|
|
|
2846 (if (consp (caddr type)) (list '< val (caaddr type))
|
|
|
2847 (list '<= val (caddr type)))))))
|
|
|
2848 ((memq (car-safe type) '(and or not))
|
|
|
2849 (cons (car type)
|
|
|
2850 (mapcar #'(lambda (x) (cl-make-type-test val x))
|
|
|
2851 (cdr type))))
|
|
|
2852 ((memq (car-safe type) '(member member*))
|
|
|
2853 (list 'and (list 'member* val (list 'quote (cdr type))) t))
|
|
|
2854 ((eq (car-safe type) 'satisfies) (list (cadr type) val))
|
|
|
2855 (t (error "Bad type spec: %s" type)))))
|
|
|
2856
|
|
|
2857 ;;;###autoload
|
|
444
|
2858 (defun typep (object type) ; See compiler macro below.
|
|
428
|
2859 "Check that OBJECT is of type TYPE.
|
|
|
2860 TYPE is a Common Lisp-style type specifier."
|
|
444
|
2861 (eval (cl-make-type-test 'object type)))
|
|
428
|
2862
|
|
|
2863 ;;;###autoload
|
|
446
|
2864 (defmacro check-type (place type &optional string)
|
|
|
2865 "Verify that PLACE is of type TYPE; signal a continuable error if not.
|
|
428
|
2866 STRING is an optional description of the desired type."
|
|
446
|
2867 (when (or (not (cl-compiling-file))
|
|
|
2868 (< cl-optimize-speed 3)
|
|
|
2869 (= cl-optimize-safety 3))
|
|
|
2870 (let* ((temp (if (cl-simple-expr-p place 3) place (gensym)))
|
|
|
2871 (test (cl-make-type-test temp type))
|
|
|
2872 (signal-error `(signal 'wrong-type-argument
|
|
|
2873 ,(list 'list (or string (list 'quote type))
|
|
|
2874 temp (list 'quote place))))
|
|
|
2875 (body
|
|
|
2876 (condition-case nil
|
|
|
2877 `(while (not ,test)
|
|
|
2878 ,(macroexpand `(setf ,place ,signal-error)))
|
|
|
2879 (error
|
|
|
2880 `(if ,test (progn ,signal-error nil))))))
|
|
|
2881 (if (eq temp place)
|
|
|
2882 body
|
|
|
2883 `(let ((,temp ,place)) ,body)))))
|
|
428
|
2884
|
|
|
2885 ;;;###autoload
|
|
|
2886 (defmacro assert (form &optional show-args string &rest args)
|
|
|
2887 "Verify that FORM returns non-nil; signal an error if not.
|
|
|
2888 Second arg SHOW-ARGS means to include arguments of FORM in message.
|
|
|
2889 Other args STRING and ARGS... are arguments to be passed to `error'.
|
|
|
2890 They are not evaluated unless the assertion fails. If STRING is
|
|
|
2891 omitted, a default message listing FORM itself is used."
|
|
|
2892 (and (or (not (cl-compiling-file))
|
|
|
2893 (< cl-optimize-speed 3) (= cl-optimize-safety 3))
|
|
|
2894 (let ((sargs (and show-args (delq nil (mapcar
|
|
|
2895 #'(lambda (x)
|
|
|
2896 (and (not (cl-const-expr-p x))
|
|
|
2897 x))
|
|
|
2898 (cdr form))))))
|
|
|
2899 (list 'progn
|
|
|
2900 (list 'or form
|
|
|
2901 (if string
|
|
|
2902 (list* 'error string (append sargs args))
|
|
|
2903 (list 'signal '(quote cl-assertion-failed)
|
|
|
2904 (list* 'list (list 'quote form) sargs))))
|
|
|
2905 nil))))
|
|
|
2906
|
|
|
2907 ;;;###autoload
|
|
|
2908 (defmacro ignore-errors (&rest body)
|
|
|
2909 "Execute FORMS; if an error occurs, return nil.
|
|
|
2910 Otherwise, return result of last FORM."
|
|
|
2911 `(condition-case nil (progn ,@body) (error nil)))
|
|
|
2912
|
|
|
2913 ;;;###autoload
|
|
|
2914 (defmacro ignore-file-errors (&rest body)
|
|
|
2915 "Execute FORMS; if an error of type `file-error' occurs, return nil.
|
|
|
2916 Otherwise, return result of last FORM."
|
|
|
2917 `(condition-case nil (progn ,@body) (file-error nil)))
|
|
|
2918
|
|
|
2919 ;;; Some predicates for analyzing Lisp forms. These are used by various
|
|
|
2920 ;;; macro expanders to optimize the results in certain common cases.
|
|
|
2921
|
|
|
2922 (defconst cl-simple-funcs '(car cdr nth aref elt if and or + - 1+ 1- min max
|
|
|
2923 car-safe cdr-safe progn prog1 prog2))
|
|
|
2924 (defconst cl-safe-funcs '(* / % length memq list vector vectorp
|
|
|
2925 < > <= >= = error))
|
|
|
2926
|
|
|
2927 ;;; Check if no side effects, and executes quickly.
|
|
|
2928 (defun cl-simple-expr-p (x &optional size)
|
|
|
2929 (or size (setq size 10))
|
|
|
2930 (if (and (consp x) (not (memq (car x) '(quote function function*))))
|
|
|
2931 (and (symbolp (car x))
|
|
|
2932 (or (memq (car x) cl-simple-funcs)
|
|
|
2933 (get (car x) 'side-effect-free))
|
|
|
2934 (progn
|
|
|
2935 (setq size (1- size))
|
|
|
2936 (while (and (setq x (cdr x))
|
|
|
2937 (setq size (cl-simple-expr-p (car x) size))))
|
|
|
2938 (and (null x) (>= size 0) size)))
|
|
|
2939 (and (> size 0) (1- size))))
|
|
|
2940
|
|
|
2941 (defun cl-simple-exprs-p (xs)
|
|
|
2942 (while (and xs (cl-simple-expr-p (car xs)))
|
|
|
2943 (setq xs (cdr xs)))
|
|
|
2944 (not xs))
|
|
|
2945
|
|
|
2946 ;;; Check if no side effects.
|
|
|
2947 (defun cl-safe-expr-p (x)
|
|
|
2948 (or (not (and (consp x) (not (memq (car x) '(quote function function*)))))
|
|
|
2949 (and (symbolp (car x))
|
|
|
2950 (or (memq (car x) cl-simple-funcs)
|
|
|
2951 (memq (car x) cl-safe-funcs)
|
|
|
2952 (get (car x) 'side-effect-free))
|
|
|
2953 (progn
|
|
|
2954 (while (and (setq x (cdr x)) (cl-safe-expr-p (car x))))
|
|
|
2955 (null x)))))
|
|
|
2956
|
|
|
2957 ;;; Check if constant (i.e., no side effects or dependencies).
|
|
|
2958 (defun cl-const-expr-p (x)
|
|
|
2959 (cond ((consp x)
|
|
|
2960 (or (eq (car x) 'quote)
|
|
|
2961 (and (memq (car x) '(function function*))
|
|
|
2962 (or (symbolp (nth 1 x))
|
|
|
2963 (and (eq (car-safe (nth 1 x)) 'lambda) 'func)))))
|
|
|
2964 ((symbolp x) (and (memq x '(nil t)) t))
|
|
|
2965 (t t)))
|
|
|
2966
|
|
|
2967 (defun cl-const-exprs-p (xs)
|
|
|
2968 (while (and xs (cl-const-expr-p (car xs)))
|
|
|
2969 (setq xs (cdr xs)))
|
|
|
2970 (not xs))
|
|
|
2971
|
|
|
2972 (defun cl-const-expr-val (x)
|
|
|
2973 (and (eq (cl-const-expr-p x) t) (if (consp x) (nth 1 x) x)))
|
|
|
2974
|
|
|
2975 (defun cl-expr-access-order (x v)
|
|
|
2976 (if (cl-const-expr-p x) v
|
|
|
2977 (if (consp x)
|
|
|
2978 (progn
|
|
|
2979 (while (setq x (cdr x)) (setq v (cl-expr-access-order (car x) v)))
|
|
|
2980 v)
|
|
|
2981 (if (eq x (car v)) (cdr v) '(t)))))
|
|
|
2982
|
|
|
2983 ;;; Count number of times X refers to Y. Return NIL for 0 times.
|
|
|
2984 (defun cl-expr-contains (x y)
|
|
|
2985 (cond ((equal y x) 1)
|
|
|
2986 ((and (consp x) (not (memq (car-safe x) '(quote function function*))))
|
|
|
2987 (let ((sum 0))
|
|
|
2988 (while x
|
|
|
2989 (setq sum (+ sum (or (cl-expr-contains (cl-pop x) y) 0))))
|
|
|
2990 (and (> sum 0) sum)))
|
|
|
2991 (t nil)))
|
|
|
2992
|
|
|
2993 (defun cl-expr-contains-any (x y)
|
|
|
2994 (while (and y (not (cl-expr-contains x (car y)))) (cl-pop y))
|
|
|
2995 y)
|
|
|
2996
|
|
|
2997 ;;; Check whether X may depend on any of the symbols in Y.
|
|
|
2998 (defun cl-expr-depends-p (x y)
|
|
|
2999 (and (not (cl-const-expr-p x))
|
|
|
3000 (or (not (cl-safe-expr-p x)) (cl-expr-contains-any x y))))
|
|
|
3001
|
|
|
3002
|
|
|
3003 ;;; Compiler macros.
|
|
|
3004
|
|
|
3005 ;;;###autoload
|
|
|
3006 (defmacro define-compiler-macro (func args &rest body)
|
|
|
3007 "(define-compiler-macro FUNC ARGLIST BODY...): Define a compiler-only macro.
|
|
|
3008 This is like `defmacro', but macro expansion occurs only if the call to
|
|
|
3009 FUNC is compiled (i.e., not interpreted). Compiler macros should be used
|
|
|
3010 for optimizing the way calls to FUNC are compiled; the form returned by
|
|
|
3011 BODY should do the same thing as a call to the normal function called
|
|
|
3012 FUNC, though possibly more efficiently. Note that, like regular macros,
|
|
|
3013 compiler macros are expanded repeatedly until no further expansions are
|
|
|
3014 possible. Unlike regular macros, BODY can decide to \"punt\" and leave the
|
|
|
3015 original function call alone by declaring an initial `&whole foo' parameter
|
|
|
3016 and then returning foo."
|
|
|
3017 (let ((p (if (listp args) args (list '&rest args))) (res nil))
|
|
|
3018 (while (consp p) (cl-push (cl-pop p) res))
|
|
|
3019 (setq args (nreverse res)) (setcdr res (and p (list '&rest p))))
|
|
|
3020 (list 'eval-when '(compile load eval)
|
|
|
3021 (cl-transform-function-property
|
|
|
3022 func 'cl-compiler-macro
|
|
|
3023 (cons (if (memq '&whole args) (delq '&whole args)
|
|
|
3024 (cons '--cl-whole-arg-- args)) body))
|
|
|
3025 (list 'or (list 'get (list 'quote func) '(quote byte-compile))
|
|
|
3026 (list 'put (list 'quote func) '(quote byte-compile)
|
|
|
3027 '(quote cl-byte-compile-compiler-macro)))))
|
|
|
3028
|
|
|
3029 ;;;###autoload
|
|
|
3030 (defun compiler-macroexpand (form)
|
|
|
3031 (while
|
|
|
3032 (let ((func (car-safe form)) (handler nil))
|
|
|
3033 (while (and (symbolp func)
|
|
|
3034 (not (setq handler (get func 'cl-compiler-macro)))
|
|
|
3035 (fboundp func)
|
|
|
3036 (or (not (eq (car-safe (symbol-function func)) 'autoload))
|
|
|
3037 (load (nth 1 (symbol-function func)))))
|
|
|
3038 (setq func (symbol-function func)))
|
|
|
3039 (and handler
|
|
|
3040 (not (eq form (setq form (apply handler form (cdr form))))))))
|
|
|
3041 form)
|
|
|
3042
|
|
|
3043 (defun cl-byte-compile-compiler-macro (form)
|
|
|
3044 (if (eq form (setq form (compiler-macroexpand form)))
|
|
|
3045 (byte-compile-normal-call form)
|
|
|
3046 (byte-compile-form form)))
|
|
|
3047
|
|
|
3048 (defmacro defsubst* (name args &rest body)
|
|
|
3049 "(defsubst* NAME ARGLIST [DOCSTRING] BODY...): define NAME as a function.
|
|
|
3050 Like `defun', except the function is automatically declared `inline',
|
|
|
3051 ARGLIST allows full Common Lisp conventions, and BODY is implicitly
|
|
|
3052 surrounded by (block NAME ...)."
|
|
|
3053 (let* ((argns (cl-arglist-args args)) (p argns)
|
|
|
3054 (pbody (cons 'progn body))
|
|
|
3055 (unsafe (not (cl-safe-expr-p pbody))))
|
|
|
3056 (while (and p (eq (cl-expr-contains args (car p)) 1)) (cl-pop p))
|
|
|
3057 (list 'progn
|
|
|
3058 (if p nil ; give up if defaults refer to earlier args
|
|
|
3059 (list 'define-compiler-macro name
|
|
|
3060 (list* '&whole 'cl-whole '&cl-quote args)
|
|
|
3061 (list* 'cl-defsubst-expand (list 'quote argns)
|
|
|
3062 (list 'quote (list* 'block name body))
|
|
|
3063 (not (or unsafe (cl-expr-access-order pbody argns)))
|
|
|
3064 (and (memq '&key args) 'cl-whole) unsafe argns)))
|
|
|
3065 (list* 'defun* name args body))))
|
|
|
3066
|
|
|
3067 (defun cl-defsubst-expand (argns body simple whole unsafe &rest argvs)
|
|
|
3068 (if (and whole (not (cl-safe-expr-p (cons 'progn argvs)))) whole
|
|
|
3069 (if (cl-simple-exprs-p argvs) (setq simple t))
|
|
|
3070 (let ((lets (delq nil
|
|
|
3071 (mapcar* #'(lambda (argn argv)
|
|
|
3072 (if (or simple (cl-const-expr-p argv))
|
|
|
3073 (progn (setq body (subst argv argn body))
|
|
|
3074 (and unsafe (list argn argv)))
|
|
|
3075 (list argn argv)))
|
|
|
3076 argns argvs))))
|
|
|
3077 (if lets (list 'let lets body) body))))
|
|
|
3078
|
|
|
3079
|
|
|
3080 ;;; Compile-time optimizations for some functions defined in this package.
|
|
|
3081 ;;; Note that cl.el arranges to force cl-macs to be loaded at compile-time,
|
|
|
3082 ;;; mainly to make sure these macros will be present.
|
|
|
3083
|
|
|
3084 (put 'eql 'byte-compile nil)
|
|
|
3085 (define-compiler-macro eql (&whole form a b)
|
|
|
3086 (cond ((eq (cl-const-expr-p a) t)
|
|
|
3087 (let ((val (cl-const-expr-val a)))
|
|
|
3088 (if (and (numberp val) (not (integerp val)))
|
|
|
3089 (list 'equal a b)
|
|
|
3090 (list 'eq a b))))
|
|
|
3091 ((eq (cl-const-expr-p b) t)
|
|
|
3092 (let ((val (cl-const-expr-val b)))
|
|
|
3093 (if (and (numberp val) (not (integerp val)))
|
|
|
3094 (list 'equal a b)
|
|
|
3095 (list 'eq a b))))
|
|
|
3096 ((cl-simple-expr-p a 5)
|
|
|
3097 (list 'if (list 'numberp a)
|
|
|
3098 (list 'equal a b)
|
|
|
3099 (list 'eq a b)))
|
|
|
3100 ((and (cl-safe-expr-p a)
|
|
|
3101 (cl-simple-expr-p b 5))
|
|
|
3102 (list 'if (list 'numberp b)
|
|
|
3103 (list 'equal a b)
|
|
|
3104 (list 'eq a b)))
|
|
|
3105 (t form)))
|
|
|
3106
|
|
|
3107 (define-compiler-macro member* (&whole form a list &rest keys)
|
|
|
3108 (let ((test (and (= (length keys) 2) (eq (car keys) ':test)
|
|
|
3109 (cl-const-expr-val (nth 1 keys)))))
|
|
|
3110 (cond ((eq test 'eq) (list 'memq a list))
|
|
|
3111 ((eq test 'equal) (list 'member a list))
|
|
|
3112 ((or (null keys) (eq test 'eql))
|
|
|
3113 (if (eq (cl-const-expr-p a) t)
|
|
|
3114 (list (if (floatp-safe (cl-const-expr-val a)) 'member 'memq)
|
|
|
3115 a list)
|
|
|
3116 (if (eq (cl-const-expr-p list) t)
|
|
|
3117 (let ((p (cl-const-expr-val list)) (mb nil) (mq nil))
|
|
|
3118 (if (not (cdr p))
|
|
|
3119 (and p (list 'eql a (list 'quote (car p))))
|
|
|
3120 (while p
|
|
|
3121 (if (floatp-safe (car p)) (setq mb t)
|
|
|
3122 (or (integerp (car p)) (symbolp (car p)) (setq mq t)))
|
|
|
3123 (setq p (cdr p)))
|
|
|
3124 (if (not mb) (list 'memq a list)
|
|
|
3125 (if (not mq) (list 'member a list) form))))
|
|
|
3126 form)))
|
|
|
3127 (t form))))
|
|
|
3128
|
|
|
3129 (define-compiler-macro assoc* (&whole form a list &rest keys)
|
|
|
3130 (let ((test (and (= (length keys) 2) (eq (car keys) ':test)
|
|
|
3131 (cl-const-expr-val (nth 1 keys)))))
|
|
|
3132 (cond ((eq test 'eq) (list 'assq a list))
|
|
|
3133 ((eq test 'equal) (list 'assoc a list))
|
|
|
3134 ((and (eq (cl-const-expr-p a) t) (or (null keys) (eq test 'eql)))
|
|
|
3135 (if (floatp-safe (cl-const-expr-val a))
|
|
|
3136 (list 'assoc a list) (list 'assq a list)))
|
|
|
3137 (t form))))
|
|
|
3138
|
|
|
3139 (define-compiler-macro adjoin (&whole form a list &rest keys)
|
|
|
3140 (if (and (cl-simple-expr-p a) (cl-simple-expr-p list)
|
|
|
3141 (not (memq ':key keys)))
|
|
|
3142 (list 'if (list* 'member* a list keys) list (list 'cons a list))
|
|
|
3143 form))
|
|
|
3144
|
|
|
3145 (define-compiler-macro list* (arg &rest others)
|
|
|
3146 (let* ((args (reverse (cons arg others)))
|
|
|
3147 (form (car args)))
|
|
|
3148 (while (setq args (cdr args))
|
|
|
3149 (setq form (list 'cons (car args) form)))
|
|
|
3150 form))
|
|
|
3151
|
|
440
|
3152 (define-compiler-macro get* (sym prop &optional default)
|
|
|
3153 (list 'get sym prop default))
|
|
428
|
3154
|
|
442
|
3155 (define-compiler-macro getf (sym prop &optional default)
|
|
|
3156 (list 'plist-get sym prop default))
|
|
|
3157
|
|
428
|
3158 (define-compiler-macro typep (&whole form val type)
|
|
|
3159 (if (cl-const-expr-p type)
|
|
|
3160 (let ((res (cl-make-type-test val (cl-const-expr-val type))))
|
|
|
3161 (if (or (memq (cl-expr-contains res val) '(nil 1))
|
|
|
3162 (cl-simple-expr-p val)) res
|
|
|
3163 (let ((temp (gensym)))
|
|
|
3164 (list 'let (list (list temp val)) (subst temp val res)))))
|
|
|
3165 form))
|
|
|
3166
|
|
|
3167
|
|
|
3168 (mapc
|
|
|
3169 #'(lambda (y)
|
|
|
3170 (put (car y) 'side-effect-free t)
|
|
|
3171 (put (car y) 'byte-compile 'cl-byte-compile-compiler-macro)
|
|
|
3172 (put (car y) 'cl-compiler-macro
|
|
|
3173 (list 'lambda '(w x)
|
|
|
3174 (if (symbolp (cadr y))
|
|
|
3175 (list 'list (list 'quote (cadr y))
|
|
|
3176 (list 'list (list 'quote (caddr y)) 'x))
|
|
|
3177 (cons 'list (cdr y))))))
|
|
|
3178 '((first 'car x) (second 'cadr x) (third 'caddr x) (fourth 'cadddr x)
|
|
|
3179 (fifth 'nth 4 x) (sixth 'nth 5 x) (seventh 'nth 6 x)
|
|
|
3180 (eighth 'nth 7 x) (ninth 'nth 8 x) (tenth 'nth 9 x)
|
|
|
3181 (rest 'cdr x) (endp 'null x) (plusp '> x 0) (minusp '< x 0)
|
|
446
|
3182 (oddp 'eq (list 'logand x 1) 1)
|
|
|
3183 (evenp 'eq (list 'logand x 1) 0)
|
|
428
|
3184 (caar car car) (cadr car cdr) (cdar cdr car) (cddr cdr cdr)
|
|
|
3185 (caaar car caar) (caadr car cadr) (cadar car cdar)
|
|
|
3186 (caddr car cddr) (cdaar cdr caar) (cdadr cdr cadr)
|
|
|
3187 (cddar cdr cdar) (cdddr cdr cddr) (caaaar car caaar)
|
|
|
3188 (caaadr car caadr) (caadar car cadar) (caaddr car caddr)
|
|
|
3189 (cadaar car cdaar) (cadadr car cdadr) (caddar car cddar)
|
|
|
3190 (cadddr car cdddr) (cdaaar cdr caaar) (cdaadr cdr caadr)
|
|
|
3191 (cdadar cdr cadar) (cdaddr cdr caddr) (cddaar cdr cdaar)
|
|
|
3192 (cddadr cdr cdadr) (cdddar cdr cddar) (cddddr cdr cdddr)))
|
|
|
3193
|
|
|
3194 ;;; Things that are inline.
|
|
|
3195 (proclaim '(inline floatp-safe acons map concatenate notany notevery
|
|
|
3196 ;; XEmacs change
|
|
|
3197 cl-set-elt revappend nreconc
|
|
|
3198 ))
|
|
|
3199
|
|
|
3200 ;;; Things that are side-effect-free. Moved to byte-optimize.el
|
|
|
3201 ;(dolist (fun '(oddp evenp plusp minusp
|
|
|
3202 ; abs expt signum last butlast ldiff
|
|
|
3203 ; pairlis gcd lcm
|
|
|
3204 ; isqrt floor* ceiling* truncate* round* mod* rem* subseq
|
|
440
|
3205 ; list-length getf))
|
|
428
|
3206 ; (put fun 'side-effect-free t))
|
|
|
3207
|
|
|
3208 ;;; Things that are side-effect-and-error-free. Moved to byte-optimize.el
|
|
|
3209 ;(dolist (fun '(eql floatp-safe list* subst acons equalp random-state-p
|
|
|
3210 ; copy-tree sublis))
|
|
|
3211 ; (put fun 'side-effect-free 'error-free))
|
|
|
3212
|
|
|
3213
|
|
|
3214 (run-hooks 'cl-macs-load-hook)
|
|
|
3215
|
|
|
3216 ;;; cl-macs.el ends here
|
