Mercurial > hg > CbC > CbC_gcc
annotate contrib/texi2pod.pl @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | 04ced10e8804 |
| children | 1830386684a0 |
| rev | line source |
|---|---|
| 0 | 1 #! /usr/bin/perl -w |
| 2 | |
| 111 | 3 # Copyright (C) 1999-2014 Free Software Foundation, Inc. |
| 0 | 4 |
| 5 # This file is part of GCC. | |
| 6 | |
| 7 # GCC is free software; you can redistribute it and/or modify | |
| 8 # it under the terms of the GNU General Public License as published by | |
| 9 # the Free Software Foundation; either version 3, or (at your option) | |
| 10 # any later version. | |
| 11 | |
| 12 # GCC is distributed in the hope that it will be useful, | |
| 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 # GNU General Public License for more details. | |
| 16 | |
| 17 # You should have received a copy of the GNU General Public License | |
| 18 # along with GCC; see the file COPYING. If not, write to | |
| 19 # the Free Software Foundation, 51 Franklin Street, Fifth Floor, | |
| 20 # Boston MA 02110-1301, USA. | |
| 21 | |
| 22 # This does trivial (and I mean _trivial_) conversion of Texinfo | |
| 23 # markup to Perl POD format. It's intended to be used to extract | |
| 24 # something suitable for a manpage from a Texinfo document. | |
| 25 | |
| 26 $output = 0; | |
| 27 $skipping = 0; | |
| 28 %sects = (); | |
| 29 $section = ""; | |
| 30 @icstack = (); | |
| 31 @endwstack = (); | |
| 32 @skstack = (); | |
| 33 @instack = (); | |
| 34 $shift = ""; | |
| 35 %defs = (); | |
| 36 $fnno = 1; | |
| 37 $inf = ""; | |
| 38 $ibase = ""; | |
| 39 @ipath = (); | |
| 40 | |
| 41 while ($_ = shift) { | |
| 42 if (/^-D(.*)$/) { | |
| 43 if ($1 ne "") { | |
| 44 $flag = $1; | |
| 45 } else { | |
| 46 $flag = shift; | |
| 47 } | |
| 48 $value = ""; | |
| 49 ($flag, $value) = ($flag =~ /^([^=]+)(?:=(.+))?/); | |
| 50 die "no flag specified for -D\n" | |
| 51 unless $flag ne ""; | |
| 52 die "flags may only contain letters, digits, hyphens, dashes and underscores\n" | |
| 53 unless $flag =~ /^[a-zA-Z0-9_-]+$/; | |
| 54 $defs{$flag} = $value; | |
| 55 } elsif (/^-I(.*)$/) { | |
| 56 if ($1 ne "") { | |
| 57 $flag = $1; | |
| 58 } else { | |
| 59 $flag = shift; | |
| 60 } | |
| 61 push (@ipath, $flag); | |
| 62 } elsif (/^-/) { | |
| 63 usage(); | |
| 64 } else { | |
| 65 $in = $_, next unless defined $in; | |
| 66 $out = $_, next unless defined $out; | |
| 67 usage(); | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 if (defined $in) { | |
| 72 $inf = gensym(); | |
| 73 open($inf, "<$in") or die "opening \"$in\": $!\n"; | |
| 74 $ibase = $1 if $in =~ m|^(.+)/[^/]+$|; | |
| 75 } else { | |
| 76 $inf = \*STDIN; | |
| 77 } | |
| 78 | |
| 79 if (defined $out) { | |
| 80 open(STDOUT, ">$out") or die "opening \"$out\": $!\n"; | |
| 81 } | |
| 82 | |
| 83 while(defined $inf) { | |
| 84 while(<$inf>) { | |
| 85 # Certain commands are discarded without further processing. | |
| 86 /^\@(?: | |
| 87 [a-z]+index # @*index: useful only in complete manual | |
| 88 |need # @need: useful only in printed manual | |
| 89 |(?:end\s+)?group # @group .. @end group: ditto | |
| 90 |page # @page: ditto | |
| 91 |node # @node: useful only in .info file | |
| 92 |(?:end\s+)?ifnottex # @ifnottex .. @end ifnottex: use contents | |
| 93 )\b/x and next; | |
| 94 | |
| 95 chomp; | |
| 96 | |
| 97 # Look for filename and title markers. | |
| 98 /^\@setfilename\s+([^.]+)/ and $fn = $1, next; | |
| 99 /^\@settitle\s+([^.]+)/ and $tl = postprocess($1), next; | |
| 100 | |
| 101 # Identify a man title but keep only the one we are interested in. | |
| 102 /^\@c\s+man\s+title\s+([A-Za-z0-9-]+)\s+(.+)/ and do { | |
| 103 if (exists $defs{$1}) { | |
| 104 $fn = $1; | |
| 105 $tl = postprocess($2); | |
| 106 } | |
| 107 next; | |
| 108 }; | |
| 109 | |
| 110 # Look for blocks surrounded by @c man begin SECTION ... @c man end. | |
| 111 # This really oughta be @ifman ... @end ifman and the like, but such | |
| 112 # would require rev'ing all other Texinfo translators. | |
| 113 /^\@c\s+man\s+begin\s+([A-Z]+)\s+([A-Za-z0-9-]+)/ and do { | |
| 114 $output = 1 if exists $defs{$2}; | |
| 115 $sect = $1; | |
| 116 next; | |
| 117 }; | |
| 118 /^\@c\s+man\s+begin\s+([A-Z]+)/ and $sect = $1, $output = 1, next; | |
| 119 /^\@c\s+man\s+end/ and do { | |
| 120 $sects{$sect} = "" unless exists $sects{$sect}; | |
| 121 $sects{$sect} .= postprocess($section); | |
| 122 $section = ""; | |
| 123 $output = 0; | |
| 124 next; | |
| 125 }; | |
| 126 | |
| 127 # handle variables | |
| 128 /^\@set\s+([a-zA-Z0-9_-]+)\s*(.*)$/ and do { | |
| 129 $defs{$1} = $2; | |
| 130 next; | |
| 131 }; | |
| 132 /^\@clear\s+([a-zA-Z0-9_-]+)/ and do { | |
| 133 delete $defs{$1}; | |
| 134 next; | |
| 135 }; | |
| 136 | |
| 137 next unless $output; | |
| 138 | |
| 139 # Discard comments. (Can't do it above, because then we'd never see | |
| 140 # @c man lines.) | |
| 141 /^\@c\b/ and next; | |
| 142 | |
| 143 # End-block handler goes up here because it needs to operate even | |
| 144 # if we are skipping. | |
| 145 /^\@end\s+([a-z]+)/ and do { | |
| 146 # Ignore @end foo, where foo is not an operation which may | |
| 147 # cause us to skip, if we are presently skipping. | |
| 148 my $ended = $1; | |
| 149 next if $skipping && $ended !~ /^(?:ifset|ifclear|ignore|menu|iftex|copying)$/; | |
| 150 | |
| 151 die "\@end $ended without \@$ended at line $.\n" unless defined $endw; | |
| 152 die "\@$endw ended by \@end $ended at line $.\n" unless $ended eq $endw; | |
| 153 | |
| 154 $endw = pop @endwstack; | |
| 155 | |
| 156 if ($ended =~ /^(?:ifset|ifclear|ignore|menu|iftex)$/) { | |
| 157 $skipping = pop @skstack; | |
| 158 next; | |
| 159 } elsif ($ended =~ /^(?:example|smallexample|display)$/) { | |
| 160 $shift = ""; | |
| 161 $_ = ""; # need a paragraph break | |
| 162 } elsif ($ended =~ /^(?:itemize|enumerate|[fv]?table)$/) { | |
| 163 $_ = "\n=back\n"; | |
| 164 $ic = pop @icstack; | |
| 165 } elsif ($ended eq "multitable") { | |
| 166 $_ = "\n=back\n"; | |
| 167 } else { | |
| 168 die "unknown command \@end $ended at line $.\n"; | |
| 169 } | |
| 170 }; | |
| 171 | |
| 172 # We must handle commands which can cause skipping even while we | |
| 173 # are skipping, otherwise we will not process nested conditionals | |
| 174 # correctly. | |
| 175 /^\@ifset\s+([a-zA-Z0-9_-]+)/ and do { | |
| 176 push @endwstack, $endw; | |
| 177 push @skstack, $skipping; | |
| 178 $endw = "ifset"; | |
| 179 $skipping = 1 unless exists $defs{$1}; | |
| 180 next; | |
| 181 }; | |
| 182 | |
| 183 /^\@ifclear\s+([a-zA-Z0-9_-]+)/ and do { | |
| 184 push @endwstack, $endw; | |
| 185 push @skstack, $skipping; | |
| 186 $endw = "ifclear"; | |
| 187 $skipping = 1 if exists $defs{$1}; | |
| 188 next; | |
| 189 }; | |
| 190 | |
| 191 /^\@(ignore|menu|iftex|copying)\b/ and do { | |
| 192 push @endwstack, $endw; | |
| 193 push @skstack, $skipping; | |
| 194 $endw = $1; | |
| 195 $skipping = 1; | |
| 196 next; | |
| 197 }; | |
| 198 | |
| 199 next if $skipping; | |
| 200 | |
| 201 # Character entities. First the ones that can be replaced by raw text | |
| 202 # or discarded outright: | |
| 203 s/\@copyright\{\}/(c)/g; | |
| 204 s/\@dots\{\}/.../g; | |
| 205 s/\@enddots\{\}/..../g; | |
| 206 s/\@([.!? ])/$1/g; | |
| 207 s/\@[:-]//g; | |
| 208 s/\@bullet(?:\{\})?/*/g; | |
| 209 s/\@TeX\{\}/TeX/g; | |
| 210 s/\@pounds\{\}/\#/g; | |
| 211 s/\@minus(?:\{\})?/-/g; | |
| 212 s/\\,/,/g; | |
| 213 | |
| 214 # Now the ones that have to be replaced by special escapes | |
| 215 # (which will be turned back into text by unmunge()) | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
216 # Replace @@ before @{ and @} in order to parse @samp{@@} correctly. |
| 0 | 217 s/&/&/g; |
|
67
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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
|
218 s/\@\@/&at;/g; |
| 0 | 219 s/\@\{/{/g; |
| 220 s/\@\}/}/g; | |
|
67
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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
221 s/\@`\{(.)\}/&$1grave;/g; |
| 0 | 222 |
| 223 # Inside a verbatim block, handle @var, @samp and @url specially. | |
| 224 if ($shift ne "") { | |
| 225 s/\@var\{([^\}]*)\}/<$1>/g; | |
| 226 s/\@samp\{([^\}]*)\}/"$1"/g; | |
| 227 s/\@url\{([^\}]*)\}/<$1>/g; | |
| 228 } | |
| 229 | |
| 230 # POD doesn't interpret E<> inside a verbatim block. | |
| 231 if ($shift eq "") { | |
| 232 s/</</g; | |
| 233 s/>/>/g; | |
| 234 } else { | |
| 235 s/</</g; | |
| 236 s/>/>/g; | |
| 237 } | |
| 238 | |
| 239 # Single line command handlers. | |
| 240 | |
| 241 /^\@include\s+(.+)$/ and do { | |
| 242 push @instack, $inf; | |
| 243 $inf = gensym(); | |
| 244 $file = postprocess($1); | |
| 245 | |
| 246 # Try cwd and $ibase, then explicit -I paths. | |
| 247 $done = 0; | |
| 248 foreach $path ("", $ibase, @ipath) { | |
| 249 $mypath = $file; | |
| 250 $mypath = $path . "/" . $mypath if ($path ne ""); | |
| 251 open($inf, "<" . $mypath) and ($done = 1, last); | |
| 252 } | |
| 253 die "cannot find $file" if !$done; | |
| 254 next; | |
| 255 }; | |
| 256 | |
| 257 /^\@(?:section|unnumbered|unnumberedsec|center|heading)\s+(.+)$/ | |
| 258 and $_ = "\n=head2 $1\n"; | |
| 259 /^\@subsection\s+(.+)$/ | |
| 260 and $_ = "\n=head3 $1\n"; | |
| 261 /^\@subsubsection\s+(.+)$/ | |
| 262 and $_ = "\n=head4 $1\n"; | |
| 263 | |
| 264 # Block command handlers: | |
| 265 /^\@itemize(?:\s+(\@[a-z]+|\*|-))?/ and do { | |
| 266 push @endwstack, $endw; | |
| 267 push @icstack, $ic; | |
| 268 if (defined $1) { | |
| 269 $ic = $1; | |
| 270 } else { | |
| 271 $ic = '*'; | |
| 272 } | |
| 273 $_ = "\n=over 4\n"; | |
| 274 $endw = "itemize"; | |
| 275 }; | |
| 276 | |
| 277 /^\@enumerate(?:\s+([a-zA-Z0-9]+))?/ and do { | |
| 278 push @endwstack, $endw; | |
| 279 push @icstack, $ic; | |
| 280 if (defined $1) { | |
| 281 $ic = $1 . "."; | |
| 282 } else { | |
| 283 $ic = "1."; | |
| 284 } | |
| 285 $_ = "\n=over 4\n"; | |
| 286 $endw = "enumerate"; | |
| 287 }; | |
| 288 | |
| 289 /^\@multitable\s.*/ and do { | |
| 290 push @endwstack, $endw; | |
| 291 $endw = "multitable"; | |
| 292 $_ = "\n=over 4\n"; | |
| 293 }; | |
| 294 | |
| 295 /^\@([fv]?table)\s+(\@[a-z]+)/ and do { | |
| 296 push @endwstack, $endw; | |
| 297 push @icstack, $ic; | |
| 298 $endw = $1; | |
| 299 $ic = $2; | |
| 300 $ic =~ s/\@(?:samp|strong|key|gcctabopt|env)/B/; | |
| 301 $ic =~ s/\@(?:code|kbd)/C/; | |
| 302 $ic =~ s/\@(?:dfn|var|emph|cite|i)/I/; | |
| 303 $ic =~ s/\@(?:file)/F/; | |
| 304 $ic =~ s/\@(?:asis)//; | |
| 305 $_ = "\n=over 4\n"; | |
| 306 }; | |
| 307 | |
| 308 /^\@((?:small)?example|display)/ and do { | |
| 309 push @endwstack, $endw; | |
| 310 $endw = $1; | |
| 311 $shift = "\t"; | |
| 312 $_ = ""; # need a paragraph break | |
| 313 }; | |
| 314 | |
| 315 /^\@item\s+(.*\S)\s*$/ and $endw eq "multitable" and do { | |
| 316 @columns = (); | |
| 317 for $column (split (/\s*\@tab\s*/, $1)) { | |
| 318 # @strong{...} is used a @headitem work-alike | |
| 111 | 319 $column =~ s/^\@strong\{(.*)\}$/$1/; |
| 0 | 320 push @columns, $column; |
| 321 } | |
| 322 $_ = "\n=item ".join (" : ", @columns)."\n"; | |
| 323 }; | |
| 324 | |
| 325 /^\@itemx?\s*(.+)?$/ and do { | |
| 326 if (defined $1) { | |
| 327 if ($ic) { | |
| 328 if ($endw eq "enumerate") { | |
| 329 $_ = "\n=item $ic $1\n"; | |
| 330 $ic =~ s/(\d+)/$1 + 1/eg; | |
| 331 } else { | |
| 332 # Entity escapes prevent munging by the <> | |
| 333 # processing below. | |
| 334 $_ = "\n=item $ic\<$1\>\n"; | |
| 335 } | |
| 336 } else { | |
| 337 $_ = "\n=item $1\n"; | |
| 338 } | |
| 339 } else { | |
| 111 | 340 $_ = "\n=item Z\<\>$ic\n"; |
| 0 | 341 $ic =~ y/A-Ya-y/B-Zb-z/; |
| 342 $ic =~ s/(\d+)/$1 + 1/eg; | |
| 343 } | |
| 344 }; | |
| 345 | |
| 346 $section .= $shift.$_."\n"; | |
| 347 } | |
| 348 # End of current file. | |
| 349 close($inf); | |
| 350 $inf = pop @instack; | |
| 351 } | |
| 352 | |
| 353 die "No filename or title\n" unless defined $fn && defined $tl; | |
| 354 | |
| 355 $sects{NAME} = "$fn \- $tl\n"; | |
| 356 $sects{FOOTNOTES} .= "=back\n" if exists $sects{FOOTNOTES}; | |
| 357 | |
| 358 for $sect (qw(NAME SYNOPSIS DESCRIPTION OPTIONS ENVIRONMENT FILES | |
| 359 BUGS NOTES FOOTNOTES SEEALSO AUTHOR COPYRIGHT)) { | |
| 360 if(exists $sects{$sect}) { | |
| 361 $head = $sect; | |
| 362 $head =~ s/SEEALSO/SEE ALSO/; | |
| 363 print "=head1 $head\n\n"; | |
| 364 print scalar unmunge ($sects{$sect}); | |
| 365 print "\n"; | |
| 366 } | |
| 367 } | |
| 368 | |
| 369 sub usage | |
| 370 { | |
| 371 die "usage: $0 [-D toggle...] [infile [outfile]]\n"; | |
| 372 } | |
| 373 | |
| 374 sub postprocess | |
| 375 { | |
| 376 local $_ = $_[0]; | |
| 377 | |
| 378 # @value{foo} is replaced by whatever 'foo' is defined as. | |
| 379 while (m/(\@value\{([a-zA-Z0-9_-]+)\})/g) { | |
| 380 if (! exists $defs{$2}) { | |
| 381 print STDERR "Option $2 not defined\n"; | |
| 382 s/\Q$1\E//; | |
| 383 } else { | |
| 384 $value = $defs{$2}; | |
| 385 s/\Q$1\E/$value/; | |
| 386 } | |
| 387 } | |
| 388 | |
| 389 # Formatting commands. | |
| 390 # Temporary escape for @r. | |
| 391 s/\@r\{([^\}]*)\}/R<$1>/g; | |
| 111 | 392 s/\@sc\{([^\}]*)\}/\U$1/g; |
| 0 | 393 s/\@(?:dfn|var|emph|cite|i)\{([^\}]*)\}/I<$1>/g; |
| 394 s/\@(?:code|kbd)\{([^\}]*)\}/C<$1>/g; | |
| 395 s/\@(?:samp|strong|key|option|env|command|b)\{([^\}]*)\}/B<$1>/g; | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
396 s/\@acronym\{([^\}]*)\}/\U$1/g; |
| 0 | 397 s/\@file\{([^\}]*)\}/F<$1>/g; |
| 398 s/\@w\{([^\}]*)\}/S<$1>/g; | |
| 399 s/\@(?:dmn|math)\{([^\}]*)\}/$1/g; | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
400 s/\@\///g; |
| 111 | 401 s/\@t\{([^\}]*)\}/$1/g; |
| 0 | 402 |
| 403 # keep references of the form @ref{...}, print them bold | |
| 404 s/\@(?:ref)\{([^\}]*)\}/B<$1>/g; | |
| 405 | |
| 406 # Change double single quotes to double quotes. | |
| 407 s/''/"/g; | |
| 408 s/``/"/g; | |
| 409 | |
| 410 # Cross references are thrown away, as are @noindent and @refill. | |
| 411 # (@noindent is impossible in .pod, and @refill is unnecessary.) | |
| 412 # @* is also impossible in .pod; we discard it and any newline that | |
| 413 # follows it. Similarly, our macro @gol must be discarded. | |
| 414 | |
| 415 s/\(?\@xref\{(?:[^\}]*)\}(?:[^.<]|(?:<[^<>]*>))*\.\)?//g; | |
| 416 s/\s+\(\@pxref\{(?:[^\}]*)\}\)//g; | |
| 417 s/;\s+\@pxref\{(?:[^\}]*)\}//g; | |
| 418 s/\@noindent\s*//g; | |
| 419 s/\@refill//g; | |
| 420 s/\@gol//g; | |
| 421 s/\@\*\s*\n?//g; | |
| 422 | |
| 423 # Anchors are thrown away | |
| 424 s/\@anchor\{(?:[^\}]*)\}//g; | |
| 425 | |
| 426 # @uref can take one, two, or three arguments, with different | |
| 427 # semantics each time. @url and @email are just like @uref with | |
| 428 # one argument, for our purposes. | |
| 429 s/\@(?:uref|url|email)\{([^\},]*)\}/<B<$1>>/g; | |
| 430 s/\@uref\{([^\},]*),([^\},]*)\}/$2 (C<$1>)/g; | |
| 431 s/\@uref\{([^\},]*),([^\},]*),([^\},]*)\}/$3/g; | |
| 432 | |
| 433 # Handle gccoptlist here, so it can contain the above formatting | |
| 434 # commands. | |
| 435 s/\@gccoptlist\{([^\}]*)\}/B<$1>/g; | |
| 436 | |
| 437 # Un-escape <> at this point. | |
| 438 s/</</g; | |
| 439 s/>/>/g; | |
| 440 | |
| 441 # Now un-nest all B<>, I<>, R<>. Theoretically we could have | |
| 442 # indefinitely deep nesting; in practice, one level suffices. | |
| 443 1 while s/([BIR])<([^<>]*)([BIR])<([^<>]*)>/$1<$2>$3<$4>$1</g; | |
| 444 | |
| 445 # Replace R<...> with bare ...; eliminate empty markup, B<>; | |
| 446 # shift white space at the ends of [BI]<...> expressions outside | |
| 447 # the expression. | |
| 448 s/R<([^<>]*)>/$1/g; | |
| 449 s/[BI]<>//g; | |
| 450 s/([BI])<(\s+)([^>]+)>/$2$1<$3>/g; | |
| 451 s/([BI])<([^>]+?)(\s+)>/$1<$2>$3/g; | |
| 452 | |
| 453 # Extract footnotes. This has to be done after all other | |
| 454 # processing because otherwise the regexp will choke on formatting | |
| 455 # inside @footnote. | |
| 456 while (/\@footnote/g) { | |
| 457 s/\@footnote\{([^\}]+)\}/[$fnno]/; | |
| 458 add_footnote($1, $fnno); | |
| 459 $fnno++; | |
| 460 } | |
| 461 | |
| 462 return $_; | |
| 463 } | |
| 464 | |
| 465 sub unmunge | |
| 466 { | |
| 467 # Replace escaped symbols with their equivalents. | |
| 468 local $_ = $_[0]; | |
| 469 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
470 s/&(.)grave;/E<$1grave>/g; |
| 0 | 471 s/</E<lt>/g; |
| 472 s/>/E<gt>/g; | |
| 473 s/{/\{/g; | |
| 474 s/}/\}/g; | |
| 475 s/&at;/\@/g; | |
| 476 s/&/&/g; | |
| 477 return $_; | |
| 478 } | |
| 479 | |
| 480 sub add_footnote | |
| 481 { | |
| 482 unless (exists $sects{FOOTNOTES}) { | |
| 483 $sects{FOOTNOTES} = "\n=over 4\n\n"; | |
| 484 } | |
| 485 | |
| 486 $sects{FOOTNOTES} .= "=item $fnno.\n\n"; $fnno++; | |
| 487 $sects{FOOTNOTES} .= $_[0]; | |
| 488 $sects{FOOTNOTES} .= "\n\n"; | |
| 489 } | |
| 490 | |
| 491 # stolen from Symbol.pm | |
| 492 { | |
| 493 my $genseq = 0; | |
| 494 sub gensym | |
| 495 { | |
| 496 my $name = "GEN" . $genseq++; | |
| 497 my $ref = \*{$name}; | |
| 498 delete $::{$name}; | |
| 499 return $ref; | |
| 500 } | |
| 501 } |