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utf8_heavy.pl: Fix nit in comment
[perl5.git] / lib / utf8_heavy.pl
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a0ed51b3 1package utf8;
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2use strict;
3use warnings;
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4use re "/aa"; # So we won't even try to look at above Latin1, potentially
5 # resulting in a recursive call
a0ed51b3 6
15732964 7sub DEBUG () { 0 }
4b17cb47 8$|=1 if DEBUG;
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9
10sub DESTROY {}
11
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12my %Cache;
13
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14sub croak { require Carp; Carp::croak(@_) }
15
c4ab2516 16sub _loose_name ($) {
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17 # Given a lowercase property or property-value name, return its
18 # standardized version that is expected for look-up in the 'loose' hashes
19 # in Heavy.pl (hence, this depends on what mktables does). This squeezes
20 # out blanks, underscores and dashes. The complication stems from the
21 # grandfathered-in 'L_', which retains a single trailing underscore.
22
23 my $loose = $_[0] =~ s/[-\s_]//rg;
24
cf2cd801 25 return $loose if $loose !~ / ^ (?: is | to )? l $/x;
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26 return 'l_' if $_[0] =~ / l .* _ /x; # If original had a trailing '_'
27 return $loose;
28}
29
5beb625e 30##
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31## "SWASH" == "SWATCH HASH". A "swatch" is a swatch of the Unicode landscape.
32## It's a data structure that encodes a set of Unicode characters.
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33##
34
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35{
36 # If a floating point number is within this distance from the value of a
37 # fraction, it is considered to be that fraction, even if many more digits
38 # are specified that don't exactly match.
39 my $min_floating_slop;
40
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41 # To guard against this program calling something that in turn ends up
42 # calling this program with the same inputs, and hence infinitely
43 # recursing, we keep a stack of the properties that are currently in
44 # progress, pushed upon entry, popped upon return.
45 my @recursed;
46
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47 sub SWASHNEW {
48 my ($class, $type, $list, $minbits, $none) = @_;
0fada5e1 49 my $user_defined = 0;
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50 local $^D = 0 if $^D;
51
3dd10fe8 52 $class = "" unless defined $class;
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53 print STDERR __LINE__, ": class=$class, type=$type, list=",
54 (defined $list) ? $list : ':undef:',
55 ", minbits=$minbits, none=$none\n" if DEBUG;
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56
57 ##
58 ## Get the list of codepoints for the type.
59 ## Called from swash_init (see utf8.c) or SWASHNEW itself.
60 ##
61 ## Callers of swash_init:
62 ## op.c:pmtrans -- for tr/// and y///
63 ## regexec.c:regclass_swash -- for /[]/, \p, and \P
64 ## utf8.c:is_utf8_common -- for common Unicode properties
65 ## utf8.c:to_utf8_case -- for lc, uc, ucfirst, etc. and //i
681d705c 66 ## Unicode::UCD::prop_invlist
62b3b855 67 ## Unicode::UCD::prop_invmap
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68 ##
69 ## Given a $type, our goal is to fill $list with the set of codepoint
70 ## ranges. If $type is false, $list passed is used.
71 ##
72 ## $minbits:
73 ## For binary properties, $minbits must be 1.
74 ## For character mappings (case and transliteration), $minbits must
75 ## be a number except 1.
76 ##
77 ## $list (or that filled according to $type):
78 ## Refer to perlunicode.pod, "User-Defined Character Properties."
79 ##
80 ## For binary properties, only characters with the property value
81 ## of True should be listed. The 3rd column, if any, will be ignored
82 ##
83 ## $none is undocumented, so I'm (khw) trying to do some documentation
84 ## of it now. It appears to be if there is a mapping in an input file
85 ## that maps to 'XXXX', then that is replaced by $none+1, expressed in
83fe8199 86 ## hexadecimal. It is used somehow in tr///.
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87 ##
88 ## To make the parsing of $type clear, this code takes the a rather
89 ## unorthodox approach of last'ing out of the block once we have the
90 ## info we need. Were this to be a subroutine, the 'last' would just
91 ## be a 'return'.
92 ##
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93 # If a problem is found $type is returned;
94 # Upon success, a new (or cached) blessed object is returned with
95 # keys TYPE, BITS, EXTRAS, LIST, and NONE with values having the
96 # same meanings as the input parameters.
a6517ebf 97 # SPECIALS contains a reference to any special-treatment hash in the
13eda826 98 # property.
a6517ebf 99 # INVERT_IT is non-zero if the result should be inverted before use
0fada5e1 100 # USER_DEFINED is non-zero if the result came from a user-defined
99870f4d 101 my $file; ## file to load data from, and also part of the %Cache key.
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102
103 # Change this to get a different set of Unicode tables
104 my $unicore_dir = 'unicore';
a6517ebf 105 my $invert_it = 0;
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106 my $list_is_from_mktables = 0; # Is $list returned from a mktables
107 # generated file? If so, we know it's
108 # well behaved.
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109
110 if ($type)
cf25bb62 111 {
3dd10fe8 112 # Verify that this isn't a recursive call for this property.
dbe7a391 113 # Can't use croak, as it may try to recurse to here itself.
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114 my $class_type = $class . "::$type";
115 if (grep { $_ eq $class_type } @recursed) {
116 CORE::die "panic: Infinite recursion in SWASHNEW for '$type'\n";
117 }
118 push @recursed, $class_type;
119
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120 $type =~ s/^\s+//;
121 $type =~ s/\s+$//;
122
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123 # regcomp.c surrounds the property name with '__" and '_i' if this
124 # is to be caseless matching.
20b1a891 125 my $caseless = $type =~ s/^(.*)__(.*)_i$/$1$2/;
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126
127 print STDERR __LINE__, ": type=$type, caseless=$caseless\n" if DEBUG;
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128
129 GETFILE:
130 {
131 ##
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132 ## It could be a user-defined property. Look in current
133 ## package if no package given
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134 ##
135
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136
137 my $caller0 = caller(0);
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138 my $caller1 = $type =~ s/(.+):://
139 ? $1
140 : $caller0 eq 'main'
141 ? 'main'
142 : caller(1);
99870f4d 143
d658a8a8 144 if (defined $caller1 && $type =~ /^I[ns]\w+$/) {
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145 my $prop = "${caller1}::$type";
146 if (exists &{$prop}) {
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147 # stolen from Scalar::Util::PP::tainted()
148 my $tainted;
149 {
150 local($@, $SIG{__DIE__}, $SIG{__WARN__});
151 local $^W = 0;
152 no warnings;
153 eval { kill 0 * $prop };
154 $tainted = 1 if $@ =~ /^Insecure/;
155 }
156 die "Insecure user-defined property \\p{$prop}\n"
157 if $tainted;
99870f4d 158 no strict 'refs';
4ff124d1 159 $list = &{$prop}($caseless);
0fada5e1 160 $user_defined = 1;
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161 last GETFILE;
162 }
163 }
164
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165 # During Perl's compilation, this routine may be called before
166 # the tables are constructed. If so, we have a chicken/egg
167 # problem. If we die, the tables never get constructed, so
168 # keep going, but return an empty table so only what the code
169 # has compiled in internally (currently ASCII/Latin1 range
170 # matching) will work.
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171 BEGIN {
172 # Poor man's constant, to avoid a run-time check.
173 $utf8::{miniperl}
174 = \! defined &DynaLoader::boot_DynaLoader;
175 }
176 if (miniperl) {
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177 eval "require '$unicore_dir/Heavy.pl'";
178 last GETFILE if $@;
179 }
180 else {
181 require "$unicore_dir/Heavy.pl";
182 }
1363cbd0 183 BEGIN { delete $utf8::{miniperl} }
99870f4d 184
4ff124d1 185 # All property names are matched caselessly
49801ec2 186 my $property_and_table = CORE::lc $type;
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187 print STDERR __LINE__, ": $property_and_table\n" if DEBUG;
188
189 # See if is of the compound form 'property=value', where the
190 # value indicates the table we should use.
191 my ($property, $table, @remainder) =
192 split /\s*[:=]\s*/, $property_and_table, -1;
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193 if (@remainder) {
194 pop @recursed if @recursed;
195 return $type;
196 }
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197
198 my $prefix;
199 if (! defined $table) {
200
201 # Here, is the single form. The property becomes empty, and
202 # the whole value is the table.
203 $table = $property;
204 $prefix = $property = "";
205 } else {
206 print STDERR __LINE__, ": $property\n" if DEBUG;
207
208 # Here it is the compound property=table form. The property
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209 # name is always loosely matched, and always can have an
210 # optional 'is' prefix (which isn't true in the single
211 # form).
c4ab2516 212 $property = _loose_name($property) =~ s/^is//r;
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213
214 # And convert to canonical form. Quit if not valid.
215 $property = $utf8::loose_property_name_of{$property};
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216 if (! defined $property) {
217 pop @recursed if @recursed;
218 return $type;
219 }
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220
221 $prefix = "$property=";
222
223 # If the rhs looks like it is a number...
224 print STDERR __LINE__, ": table=$table\n" if DEBUG;
225 if ($table =~ qr{ ^ [ \s 0-9 _ + / . -]+ $ }x) {
226 print STDERR __LINE__, ": table=$table\n" if DEBUG;
227
228 # Don't allow leading nor trailing slashes
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229 if ($table =~ / ^ \/ | \/ $ /x) {
230 pop @recursed if @recursed;
231 return $type;
232 }
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233
234 # Split on slash, in case it is a rational, like \p{1/5}
235 my @parts = split qr{ \s* / \s* }x, $table, -1;
236 print __LINE__, ": $type\n" if @parts > 2 && DEBUG;
237
238 # Can have maximum of one slash
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239 if (@parts > 2) {
240 pop @recursed if @recursed;
241 return $type;
242 }
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243
244 foreach my $part (@parts) {
245 print __LINE__, ": part=$part\n" if DEBUG;
246
247 $part =~ s/^\+\s*//; # Remove leading plus
248 $part =~ s/^-\s*/-/; # Remove blanks after unary
249 # minus
250
251 # Remove underscores between digits.
eb568297 252 $part =~ s/(?<= [0-9] ) _ (?= [0-9] ) //xg;
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253
254 # No leading zeros (but don't make a single '0'
255 # into a null string)
256 $part =~ s/ ^ ( -? ) 0+ /$1/x;
257 $part .= '0' if $part eq '-' || $part eq "";
258
259 # No trailing zeros after a decimal point
260 $part =~ s/ ( \. .*? ) 0+ $ /$1/x;
261
262 # Begin with a 0 if a leading decimal point
263 $part =~ s/ ^ ( -? ) \. /${1}0./x;
264
265 # Ensure not a trailing decimal point: turn into an
266 # integer
267 $part =~ s/ \. $ //x;
268
269 print STDERR __LINE__, ": part=$part\n" if DEBUG;
270 #return $type if $part eq "";
271
272 # Result better look like a number. (This test is
273 # needed because, for example could have a plus in
274 # the middle.)
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275 if ($part !~ / ^ -? [0-9]+ ( \. [0-9]+)? $ /x) {
276 pop @recursed if @recursed;
277 return $type;
278 }
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279 }
280
281 # If a rational...
282 if (@parts == 2) {
283
284 # If denominator is negative, get rid of it, and ...
285 if ($parts[1] =~ s/^-//) {
286
287 # If numerator is also negative, convert the
288 # whole thing to positive, or move the minus to
289 # the numerator
290 if ($parts[0] !~ s/^-//) {
291 $parts[0] = '-' . $parts[0];
292 }
293 }
294 $table = join '/', @parts;
295 }
296 elsif ($property ne 'nv' || $parts[0] !~ /\./) {
297
298 # Here is not numeric value, or doesn't have a
299 # decimal point. No further manipulation is
300 # necessary. (Note the hard-coded property name.
301 # This could fail if other properties eventually
302 # had fractions as well; perhaps the cjk ones
303 # could evolve to do that. This hard-coding could
304 # be fixed by mktables generating a list of
305 # properties that could have fractions.)
306 $table = $parts[0];
307 } else {
308
309 # Here is a floating point numeric_value. Try to
310 # convert to rational. First see if is in the list
311 # of known ones.
312 if (exists $utf8::nv_floating_to_rational{$parts[0]}) {
313 $table = $utf8::nv_floating_to_rational{$parts[0]};
314 } else {
315
316 # Here not in the list. See if is close
317 # enough to something in the list. First
318 # determine what 'close enough' means. It has
319 # to be as tight as what mktables says is the
320 # maximum slop, and as tight as how many
321 # digits we were passed. That is, if the user
322 # said .667, .6667, .66667, etc. we match as
323 # many digits as they passed until get to
324 # where it doesn't matter any more due to the
325 # machine's precision. If they said .6666668,
326 # we fail.
327 (my $fraction = $parts[0]) =~ s/^.*\.//;
328 my $epsilon = 10 ** - (length($fraction));
329 if ($epsilon > $utf8::max_floating_slop) {
330 $epsilon = $utf8::max_floating_slop;
331 }
332
333 # But it can't be tighter than the minimum
334 # precision for this machine. If haven't
335 # already calculated that minimum, do so now.
336 if (! defined $min_floating_slop) {
337
338 # Keep going down an order of magnitude
339 # until find that adding this quantity to
340 # 1 remains 1; but put an upper limit on
341 # this so in case this algorithm doesn't
342 # work properly on some platform, that we
343 # won't loop forever.
344 my $count = 0;
345 $min_floating_slop = 1;
346 while (1+ $min_floating_slop != 1
347 && $count++ < 50)
348 {
349 my $next = $min_floating_slop / 10;
350 last if $next == 0; # If underflows,
351 # use previous one
352 $min_floating_slop = $next;
353 print STDERR __LINE__, ": min_float_slop=$min_floating_slop\n" if DEBUG;
354 }
355
356 # Back off a couple orders of magnitude,
357 # just to be safe.
358 $min_floating_slop *= 100;
359 }
360
361 if ($epsilon < $min_floating_slop) {
362 $epsilon = $min_floating_slop;
363 }
364 print STDERR __LINE__, ": fraction=.$fraction; epsilon=$epsilon\n" if DEBUG;
365
366 undef $table;
367
368 # And for each possible rational in the table,
369 # see if it is within epsilon of the input.
370 foreach my $official
371 (keys %utf8::nv_floating_to_rational)
372 {
373 print STDERR __LINE__, ": epsilon=$epsilon, official=$official, diff=", abs($parts[0] - $official), "\n" if DEBUG;
374 if (abs($parts[0] - $official) < $epsilon) {
375 $table =
376 $utf8::nv_floating_to_rational{$official};
377 last;
378 }
379 }
380
381 # Quit if didn't find one.
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382 if (! defined $table) {
383 pop @recursed if @recursed;
384 return $type;
385 }
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386 }
387 }
388 print STDERR __LINE__, ": $property=$table\n" if DEBUG;
389 }
390 }
391
392 # Combine lhs (if any) and rhs to get something that matches
393 # the syntax of the lookups.
394 $property_and_table = "$prefix$table";
395 print STDERR __LINE__, ": $property_and_table\n" if DEBUG;
396
397 # First try stricter matching.
398 $file = $utf8::stricter_to_file_of{$property_and_table};
399
400 # If didn't find it, try again with looser matching by editing
401 # out the applicable characters on the rhs and looking up
402 # again.
403 if (! defined $file) {
c4ab2516 404 $table = _loose_name($table);
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405 $property_and_table = "$prefix$table";
406 print STDERR __LINE__, ": $property_and_table\n" if DEBUG;
407 $file = $utf8::loose_to_file_of{$property_and_table};
408 }
409
410 # Add the constant and go fetch it in.
411 if (defined $file) {
a6517ebf 412
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413 # If the file name contains a !, it means to invert. The
414 # 0+ makes sure result is numeric
415 $invert_it = 0 + $file =~ s/!//;
a6517ebf 416
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417 if ($utf8::why_deprecated{$file}) {
418 warnings::warnif('deprecated', "Use of '$type' in \\p{} or \\P{} is deprecated because: $utf8::why_deprecated{$file};");
419 }
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420
421 if ($caseless
422 && exists $utf8::caseless_equivalent{$property_and_table})
423 {
424 $file = $utf8::caseless_equivalent{$property_and_table};
425 }
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426
427 # The pseudo-directory '#' means that there really isn't a
428 # file to read, the data is in-line as part of the string;
429 # we extract it below.
430 $file = "$unicore_dir/lib/$file.pl" unless $file =~ m!^#/!;
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431 last GETFILE;
432 }
433 print STDERR __LINE__, ": didn't find $property_and_table\n" if DEBUG;
434
435 ##
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436 ## Last attempt -- see if it's a standard "To" name
437 ## (e.g. "ToLower") ToTitle is used by ucfirst().
438 ## The user-level way to access ToDigit() and ToFold()
439 ## is to use Unicode::UCD.
440 ##
cf2cd801 441 # Only check if caller wants non-binary
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KW
442 my $retried = 0;
443 if ($minbits != 1 && $property_and_table =~ s/^to//) {{
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444 # Look input up in list of properties for which we have
445 # mapping files.
446 if (defined ($file =
447 $utf8::loose_property_to_file_of{$property_and_table}))
448 {
449 $type = $utf8::file_to_swash_name{$file};
450 print STDERR __LINE__, ": type set to $type\n" if DEBUG;
451 $file = "$unicore_dir/$file.pl";
452 last GETFILE;
6aec79bd
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453 } # If that fails see if there is a corresponding binary
454 # property file
455 elsif (defined ($file =
456 $utf8::loose_to_file_of{$property_and_table}))
457 {
458
459 # Here, there is no map file for the property we are
460 # trying to get the map of, but this is a binary
461 # property, and there is a file for it that can easily
462 # be translated to a mapping.
463
464 # In the case of properties that are forced to binary,
465 # they are a combination. We return the actual
466 # mapping instead of the binary. If the input is
467 # something like 'Tocjkkiicore', it will be found in
468 # %loose_property_to_file_of above as => 'To/kIICore'.
469 # But the form like ToIskiicore won't be. To fix
470 # this, it was easiest to do it here. These
471 # properties are the complements of the default
472 # property, so there is an entry in %loose_to_file_of
473 # that is 'iskiicore' => '!kIICore/N', If we find such
474 # an entry, strip off things and try again, which
475 # should find the entry in %loose_property_to_file_of.
476 # Actual binary properties that are of this form, such
477 # as this entry: 'ishrkt' => '!Perl/Any' will also be
478 # retried, but won't be in %loose_property_to_file_of,
479 # and instead the next time through, it will find
480 # 'hrkt' => '!Perl/Any' and proceed.
481 redo if ! $retried
482 && $file =~ /^!/
483 && $property_and_table =~ s/^is//;
484
485 # This is a binary property. Setting this here causes
486 # it to be stored as such in the cache, so if someone
487 # comes along later looking for just a binary, they
488 # get it.
489 $minbits = 1;
490
4a7e937e 491 # The 0+ makes sure is numeric
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492 $invert_it = 0 + $file =~ s/!//;
493 $file = "$unicore_dir/lib/$file.pl" unless $file =~ m!^#/!;
6aec79bd 494 last GETFILE;
cf2cd801 495 }
6aec79bd 496 } }
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497
498 ##
499 ## If we reach this line, it's because we couldn't figure
500 ## out what to do with $type. Ouch.
501 ##
502
3dd10fe8 503 pop @recursed if @recursed;
99870f4d 504 return $type;
c9db9632 505 } # end of GETFILE block
cf25bb62 506
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507 if (defined $file) {
508 print STDERR __LINE__, ": found it (file='$file')\n" if DEBUG;
509
510 ##
511 ## If we reach here, it was due to a 'last GETFILE' above
512 ## (exception: user-defined properties and mappings), so we
513 ## have a filename, so now we load it if we haven't already.
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514
515 # The pseudo-directory '#' means the result isn't really a
516 # file, but is in-line, with semi-colons to be turned into
517 # new-lines. Since it is in-line there is no advantage to
518 # caching the result
519 if ($file =~ s!^#/!!) {
3854b4b8 520 $list = $utf8::inline_definitions[$file];
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521 }
522 else {
523 # Here, we have an actual file to read in and load, but it
524 # may already have been read-in and cached. The cache key
525 # is the class and file to load, and whether the results
526 # need to be inverted.
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KW
527 my $found = $Cache{$class, $file, $invert_it};
528 if ($found and ref($found) eq $class) {
529 print STDERR __LINE__, ": Returning cached swash for '$class,$file,$invert_it' for \\p{$type}\n" if DEBUG;
530 pop @recursed if @recursed;
531 return $found;
532 }
99870f4d 533
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KW
534 local $@;
535 local $!;
536 $list = do $file; die $@ if $@;
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537 }
538
7b953548 539 $list_is_from_mktables = 1;
0a0ffbce 540 }
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541 } # End of $type is non-null
542
543 # Here, either $type was null, or we found the requested property and
544 # read it into $list
cf25bb62 545
7b953548 546 my $extras = "";
c9db9632 547
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548 my $bits = $minbits;
549
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550 # mktables lists don't have extras, like '&utf8::prop', so don't need
551 # to separate them; also lists are already sorted, so don't need to do
552 # that.
553 if ($list && ! $list_is_from_mktables) {
0e9be77f 554 my $taint = substr($list,0,0); # maintain taint
9b225781 555
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556 # Separate the extras from the code point list, and make sure
557 # user-defined properties and tr/// are well-behaved for
558 # downstream code.
559 if ($user_defined || $none) {
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KW
560 my @tmp = split(/^/m, $list);
561 my %seen;
562 no warnings;
563
564 # The extras are anything that doesn't begin with a hex digit.
565 $extras = join '', $taint, grep /^[^0-9a-fA-F]/, @tmp;
566
567 # Remove the extras, and sort the remaining entries by the
568 # numeric value of their beginning hex digits, removing any
569 # duplicates.
570 $list = join '', $taint,
571 map { $_->[1] }
572 sort { $a->[0] <=> $b->[0] }
573 map { /^([0-9a-fA-F]+)/; [ CORE::hex($1), $_ ] }
574 grep { /^([0-9a-fA-F]+)/ and not $seen{$1}++ } @tmp; # XXX doesn't do ranges right
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575 }
576 else {
577 # mktables has gone to some trouble to make non-user defined
578 # properties well-behaved, so we can skip the effort we do for
579 # user-defined ones. Any extras are at the very beginning of
580 # the string.
581
582 # This regex splits out the first lines of $list into $1 and
583 # strips them off from $list, until we get one that begins
584 # with a hex number, alone on the line, or followed by a tab.
585 # Either portion may be empty.
586 $list =~ s/ \A ( .*? )
587 (?: \z | (?= ^ [0-9a-fA-F]+ (?: \t | $) ) )
588 //msx;
589
590 $extras = "$taint$1";
591 }
99870f4d 592 }
a0ed51b3 593
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594 if ($none) {
595 my $hextra = sprintf "%04x", $none + 1;
596 $list =~ s/\tXXXX$/\t$hextra/mg;
597 }
a0ed51b3 598
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599 if ($minbits != 1 && $minbits < 32) { # not binary property
600 my $top = 0;
601 while ($list =~ /^([0-9a-fA-F]+)(?:[\t]([0-9a-fA-F]+)?)(?:[ \t]([0-9a-fA-F]+))?/mg) {
602 my $min = CORE::hex $1;
603 my $max = defined $2 ? CORE::hex $2 : $min;
604 my $val = defined $3 ? CORE::hex $3 : 0;
605 $val += $max - $min if defined $3;
606 $top = $val if $val > $top;
607 }
608 my $topbits =
609 $top > 0xffff ? 32 :
610 $top > 0xff ? 16 : 8;
611 $bits = $topbits if $bits < $topbits;
612 }
a0ed51b3 613
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614 my @extras;
615 if ($extras) {
616 for my $x ($extras) {
0e9be77f 617 my $taint = substr($x,0,0); # maintain taint
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618 pos $x = 0;
619 while ($x =~ /^([^0-9a-fA-F\n])(.*)/mg) {
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620 my $char = "$1$taint";
621 my $name = "$2$taint";
622 print STDERR __LINE__, ": char [$char] => name [$name]\n"
623 if DEBUG;
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624 if ($char =~ /[-+!&]/) {
625 my ($c,$t) = split(/::/, $name, 2); # bogus use of ::, really
626 my $subobj;
627 if ($c eq 'utf8') {
628 $subobj = utf8->SWASHNEW($t, "", $minbits, 0);
629 }
630 elsif (exists &$name) {
631 $subobj = utf8->SWASHNEW($name, "", $minbits, 0);
632 }
633 elsif ($c =~ /^([0-9a-fA-F]+)/) {
634 $subobj = utf8->SWASHNEW("", $c, $minbits, 0);
635 }
25df5e40 636 print STDERR __LINE__, ": returned from getting sub object for $name\n" if DEBUG;
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637 if (! ref $subobj) {
638 pop @recursed if @recursed && $type;
639 return $subobj;
640 }
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641 push @extras, $name => $subobj;
642 $bits = $subobj->{BITS} if $bits < $subobj->{BITS};
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643 $user_defined = $subobj->{USER_DEFINED}
644 if $subobj->{USER_DEFINED};
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645 }
646 }
647 }
648 }
a0ed51b3 649
99870f4d 650 if (DEBUG) {
0fada5e1 651 print STDERR __LINE__, ": CLASS = $class, TYPE => $type, BITS => $bits, NONE => $none, INVERT_IT => $invert_it, USER_DEFINED => $user_defined";
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652 print STDERR "\nLIST =>\n$list" if defined $list;
653 print STDERR "\nEXTRAS =>\n$extras" if defined $extras;
654 print STDERR "\n";
655 }
a0ed51b3 656
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657 my $SWASH = bless {
658 TYPE => $type,
659 BITS => $bits,
660 EXTRAS => $extras,
661 LIST => $list,
662 NONE => $none,
0fada5e1 663 USER_DEFINED => $user_defined,
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664 @extras,
665 } => $class;
666
667 if ($file) {
4a7e937e 668 $Cache{$class, $file, $invert_it} = $SWASH;
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669 if ($type
670 && exists $utf8::SwashInfo{$type}
671 && exists $utf8::SwashInfo{$type}{'specials_name'})
672 {
673 my $specials_name = $utf8::SwashInfo{$type}{'specials_name'};
674 no strict "refs";
69b36ee0 675 print STDERR "\nspecials_name => $specials_name\n" if DEBUG;
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676 $SWASH->{'SPECIALS'} = \%$specials_name;
677 }
a6517ebf 678 $SWASH->{'INVERT_IT'} = $invert_it;
99870f4d 679 }
5beb625e 680
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681 pop @recursed if @recursed && $type;
682
99870f4d 683 return $SWASH;
5beb625e 684 }
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685}
686
b0e3252e 687# Now SWASHGET is recasted into a C function S_swatch_get (see utf8.c).
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688
6891;