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1 ;;; byte-run.el --- byte-compiler support for inlining
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2
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3 ;; Copyright (C) 1992 Free Software Foundation, Inc.
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4
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5 ;; Author: Jamie Zawinski <jwz@lucid.com>
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6 ;; Hallvard Furuseth <hbf@ulrik.uio.no>
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7 ;; Keywords: internal
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8
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9 ;; The code in this file should always be loaded, because it defines things
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10 ;; like "defsubst" which should work interpreted as well. The code in
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11 ;; bytecomp.el and byte-optimize.el can be loaded as needed.
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12 ;;
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13 ;; This file is part of XEmacs.
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14
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15 ;; XEmacs is free software; you can redistribute it and/or modify it
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16 ;; under the terms of the GNU General Public License as published by
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17 ;; the Free Software Foundation; either version 2, or (at your option)
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18 ;; any later version.
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19
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20 ;; XEmacs is distributed in the hope that it will be useful, but
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21 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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22 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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23 ;; General Public License for more details.
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24
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25 ;; You should have received a copy of the GNU General Public License
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16
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26 ;; along with XEmacs; see the file COPYING. If not, write to the
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27 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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28 ;; Boston, MA 02111-1307, USA.
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0
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29
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30 ;;; Synched up with: FSF 19.30.
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31
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32 ;;; Commentary:
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33
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34 ;;; interface to selectively inlining functions.
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35 ;;; This only happens when source-code optimization is turned on.
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36
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37 ;;; Code:
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38
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39 ;; Redefined in byte-optimize.el.
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40 ;; This is not documented--it's not clear that we should promote it.
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41 (fset 'inline 'progn)
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42 (put 'inline 'lisp-indent-hook 0)
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43
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44
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45 ;;; Interface to inline functions.
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46
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47 ;; FSF comments the next two out, but I see no reason to do so. --ben
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48 (defmacro proclaim-inline (&rest fns)
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49 "Cause the named functions to be open-coded when called from compiled code.
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50 They will only be compiled open-coded when byte-optimize is true."
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51 (cons 'eval-and-compile
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52 (apply
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53 'nconc
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54 (mapcar
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55 '(lambda (x)
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56 (` ((or (memq (get '(, x) 'byte-optimizer)
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57 '(nil byte-compile-inline-expand))
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58 (error
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59 "%s already has a byte-optimizer, can't make it inline"
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60 '(, x)))
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61 (put '(, x) 'byte-optimizer 'byte-compile-inline-expand))))
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62 fns))))
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63
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64
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65 (defmacro proclaim-notinline (&rest fns)
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66 "Cause the named functions to no longer be open-coded."
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67 (cons 'eval-and-compile
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68 (apply
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69 'nconc
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70 (mapcar
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71 '(lambda (x)
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72 (` ((if (eq (get '(, x) 'byte-optimizer)
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73 'byte-compile-inline-expand)
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74 (put '(, x) 'byte-optimizer nil)))))
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75 fns))))
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76
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77 ;; This has a special byte-hunk-handler in bytecomp.el.
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78 (defmacro defsubst (name arglist &rest body)
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79 "Define an inline function. The syntax is just like that of `defun'."
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80 (or (memq (get name 'byte-optimizer)
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81 '(nil byte-compile-inline-expand))
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82 (error "`%s' is a primitive" name))
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83 (list 'prog1
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84 (cons 'defun (cons name (cons arglist body)))
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85 (list 'proclaim-inline name)))
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86 ; Instead of the above line, FSF has this:
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87 ; (list 'eval-and-compile
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88 ; (list 'put (list 'quote name)
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89 ; ''byte-optimizer ''byte-compile-inline-expand))))
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90
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91 (defun make-obsolete (fn new)
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92 "Make the byte-compiler warn that FUNCTION is obsolete.
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93 The warning will say that NEW should be used instead.
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94 If NEW is a string, that is the `use instead' message."
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95 (interactive "aMake function obsolete: \nxObsoletion replacement: ")
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96 (let ((handler (get fn 'byte-compile)))
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97 (if (eq 'byte-compile-obsolete handler)
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98 (setcar (get fn 'byte-obsolete-info) new)
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99 (put fn 'byte-obsolete-info (cons new handler))
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100 (put fn 'byte-compile 'byte-compile-obsolete)))
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101 fn)
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102
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103 (defun make-obsolete-variable (var new)
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104 "Make the byte-compiler warn that VARIABLE is obsolete,
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105 and NEW should be used instead. If NEW is a string, then that is the
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106 `use instead' message."
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107 (interactive
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108 (list
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109 (let ((str (completing-read "Make variable obsolete: " obarray 'boundp t)))
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110 (if (equal str "") (error ""))
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111 (intern str))
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112 (car (read-from-string (read-string "Obsoletion replacement: ")))))
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113 (put var 'byte-obsolete-variable new)
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114 var)
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115
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116 (put 'dont-compile 'lisp-indent-hook 0)
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117 (defmacro dont-compile (&rest body)
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118 "Like `progn', but the body always runs interpreted (not compiled).
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119 If you think you need this, you're probably making a mistake somewhere."
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120 (list 'eval (list 'quote (if (cdr body) (cons 'progn body) (car body)))))
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121
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122
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123 ;;; interface to evaluating things at compile time and/or load time
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124 ;;; these macro must come after any uses of them in this file, as their
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125 ;;; definition in the file overrides the magic definitions on the
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126 ;;; byte-compile-macro-environment.
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127
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128 (put 'eval-when-compile 'lisp-indent-hook 0)
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129 (defmacro eval-when-compile (&rest body)
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130 "Like `progn', but evaluates the body at compile time.
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131 The result of the body appears to the compiler as a quoted constant."
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132 ;; Not necessary because we have it in b-c-initial-macro-environment
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133 ;; (list 'quote (eval (cons 'progn body)))
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134 (cons 'progn body))
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135
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136 (put 'eval-and-compile 'lisp-indent-hook 0)
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137 (defmacro eval-and-compile (&rest body)
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138 "Like `progn', but evaluates the body at compile time and at load time."
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139 ;; Remember, it's magic.
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140 (cons 'progn body))
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141
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142
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143 ;;; Interface to file-local byte-compiler parameters.
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144 ;;; Redefined in bytecomp.el.
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145
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146 ;;; The great RMS speaketh:
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147 ;;;
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148 ;;; I nuked this because it's not a good idea for users to think of
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149 ;;; using it. These options are a matter of installation preference,
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150 ;;; and have nothing to do with particular source files; it's a
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151 ;;; mistake to suggest to users that they should associate these with
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152 ;;; particular source files. There is hardly any reason to change
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153 ;;; these parameters, anyway. --rms.
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154 ;;;
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155 ;;; But I'll leave this stuff alone. --ben
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156
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157 (put 'byte-compiler-options 'lisp-indent-hook 0)
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158 (defmacro byte-compiler-options (&rest args)
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159 "Set some compilation-parameters for this file.
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160 This will affect only the file in which it appears; this does nothing when
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161 evaluated, or when loaded from a .el file.
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162
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163 Each argument to this macro must be a list of a key and a value.
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164
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165 Keys: Values: Corresponding variable:
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166
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167 verbose t, nil byte-compile-verbose
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168 optimize t, nil, source, byte byte-optimize
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169 warnings list of warnings byte-compile-warnings
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170 file-format emacs19, emacs20 byte-compile-emacs19-compatibility
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171
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172 The value specificed with the `warnings' option must be a list, containing
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173 some subset of the following flags:
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174
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175 free-vars references to variables not in the current lexical scope.
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176 unused-vars references to non-global variables bound but not referenced.
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177 unresolved calls to unknown functions.
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178 callargs lambda calls with args that don't match the definition.
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179 redefine function cell redefined from a macro to a lambda or vice
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180 versa, or redefined to take a different number of arguments.
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181
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182 If the first element if the list is `+' or `-' then the specified elements
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183 are added to or removed from the current set of warnings, instead of the
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184 entire set of warnings being overwritten.
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185
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186 For example, something like this might appear at the top of a source file:
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187
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188 (byte-compiler-options
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189 (optimize t)
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190 (warnings (- callargs)) ; Don't warn about arglist mismatch
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191 (warnings (+ unused-vars)) ; Do warn about unused bindings
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192 (file-format emacs19))"
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193 nil)
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194
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195 ;;; bytecomp-runtime.el ends here
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