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utf8_heavy.pl: White-space only
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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
aa8f6cef 23 (my $loose = $_[0]) =~ tr/-_ \t//d;
45376db6 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 $utf8::{miniperl}
174 = \! defined &DynaLoader::boot_DynaLoader;
175 }
176 if (miniperl) {
a44f4b74 177 eval "require '$unicore_dir/Heavy.pl'";
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178 if ($@) {
179 print STDERR __LINE__, ": '$@'\n" if DEBUG;
180 pop @recursed if @recursed;
181 return $type;
182 }
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183 }
184 else {
185 require "$unicore_dir/Heavy.pl";
186 }
1363cbd0 187 BEGIN { delete $utf8::{miniperl} }
99870f4d 188
4ff124d1 189 # All property names are matched caselessly
49801ec2 190 my $property_and_table = CORE::lc $type;
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191 print STDERR __LINE__, ": $property_and_table\n" if DEBUG;
192
193 # See if is of the compound form 'property=value', where the
194 # value indicates the table we should use.
195 my ($property, $table, @remainder) =
196 split /\s*[:=]\s*/, $property_and_table, -1;
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197 if (@remainder) {
198 pop @recursed if @recursed;
199 return $type;
200 }
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201
202 my $prefix;
203 if (! defined $table) {
204
205 # Here, is the single form. The property becomes empty, and
206 # the whole value is the table.
207 $table = $property;
208 $prefix = $property = "";
209 } else {
210 print STDERR __LINE__, ": $property\n" if DEBUG;
211
212 # Here it is the compound property=table form. The property
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213 # name is always loosely matched, and always can have an
214 # optional 'is' prefix (which isn't true in the single
215 # form).
c4ab2516 216 $property = _loose_name($property) =~ s/^is//r;
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217
218 # And convert to canonical form. Quit if not valid.
219 $property = $utf8::loose_property_name_of{$property};
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220 if (! defined $property) {
221 pop @recursed if @recursed;
222 return $type;
223 }
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224
225 $prefix = "$property=";
226
227 # If the rhs looks like it is a number...
228 print STDERR __LINE__, ": table=$table\n" if DEBUG;
aa8f6cef 229 if ($table =~ m{ ^ [ \s 0-9 _ + / . -]+ $ }x) {
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230 print STDERR __LINE__, ": table=$table\n" if DEBUG;
231
232 # Don't allow leading nor trailing slashes
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233 if ($table =~ / ^ \/ | \/ $ /x) {
234 pop @recursed if @recursed;
235 return $type;
236 }
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237
238 # Split on slash, in case it is a rational, like \p{1/5}
aa8f6cef 239 my @parts = split m{ \s* / \s* }x, $table, -1;
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240 print __LINE__, ": $type\n" if @parts > 2 && DEBUG;
241
242 # Can have maximum of one slash
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243 if (@parts > 2) {
244 pop @recursed if @recursed;
245 return $type;
246 }
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247
248 foreach my $part (@parts) {
249 print __LINE__, ": part=$part\n" if DEBUG;
250
251 $part =~ s/^\+\s*//; # Remove leading plus
252 $part =~ s/^-\s*/-/; # Remove blanks after unary
253 # minus
254
255 # Remove underscores between digits.
eb568297 256 $part =~ s/(?<= [0-9] ) _ (?= [0-9] ) //xg;
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257
258 # No leading zeros (but don't make a single '0'
259 # into a null string)
260 $part =~ s/ ^ ( -? ) 0+ /$1/x;
261 $part .= '0' if $part eq '-' || $part eq "";
262
263 # No trailing zeros after a decimal point
264 $part =~ s/ ( \. .*? ) 0+ $ /$1/x;
265
266 # Begin with a 0 if a leading decimal point
267 $part =~ s/ ^ ( -? ) \. /${1}0./x;
268
269 # Ensure not a trailing decimal point: turn into an
270 # integer
271 $part =~ s/ \. $ //x;
272
273 print STDERR __LINE__, ": part=$part\n" if DEBUG;
274 #return $type if $part eq "";
275
276 # Result better look like a number. (This test is
277 # needed because, for example could have a plus in
278 # the middle.)
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279 if ($part !~ / ^ -? [0-9]+ ( \. [0-9]+)? $ /x) {
280 pop @recursed if @recursed;
281 return $type;
282 }
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283 }
284
285 # If a rational...
286 if (@parts == 2) {
287
288 # If denominator is negative, get rid of it, and ...
289 if ($parts[1] =~ s/^-//) {
290
291 # If numerator is also negative, convert the
292 # whole thing to positive, or move the minus to
293 # the numerator
294 if ($parts[0] !~ s/^-//) {
295 $parts[0] = '-' . $parts[0];
296 }
297 }
298 $table = join '/', @parts;
299 }
300 elsif ($property ne 'nv' || $parts[0] !~ /\./) {
301
302 # Here is not numeric value, or doesn't have a
303 # decimal point. No further manipulation is
304 # necessary. (Note the hard-coded property name.
305 # This could fail if other properties eventually
306 # had fractions as well; perhaps the cjk ones
307 # could evolve to do that. This hard-coding could
308 # be fixed by mktables generating a list of
309 # properties that could have fractions.)
310 $table = $parts[0];
311 } else {
312
313 # Here is a floating point numeric_value. Try to
314 # convert to rational. First see if is in the list
315 # of known ones.
316 if (exists $utf8::nv_floating_to_rational{$parts[0]}) {
317 $table = $utf8::nv_floating_to_rational{$parts[0]};
318 } else {
319
320 # Here not in the list. See if is close
321 # enough to something in the list. First
322 # determine what 'close enough' means. It has
323 # to be as tight as what mktables says is the
324 # maximum slop, and as tight as how many
325 # digits we were passed. That is, if the user
326 # said .667, .6667, .66667, etc. we match as
327 # many digits as they passed until get to
328 # where it doesn't matter any more due to the
329 # machine's precision. If they said .6666668,
330 # we fail.
331 (my $fraction = $parts[0]) =~ s/^.*\.//;
332 my $epsilon = 10 ** - (length($fraction));
333 if ($epsilon > $utf8::max_floating_slop) {
334 $epsilon = $utf8::max_floating_slop;
335 }
336
337 # But it can't be tighter than the minimum
338 # precision for this machine. If haven't
339 # already calculated that minimum, do so now.
340 if (! defined $min_floating_slop) {
341
342 # Keep going down an order of magnitude
343 # until find that adding this quantity to
344 # 1 remains 1; but put an upper limit on
345 # this so in case this algorithm doesn't
346 # work properly on some platform, that we
347 # won't loop forever.
348 my $count = 0;
349 $min_floating_slop = 1;
350 while (1+ $min_floating_slop != 1
351 && $count++ < 50)
352 {
353 my $next = $min_floating_slop / 10;
354 last if $next == 0; # If underflows,
355 # use previous one
356 $min_floating_slop = $next;
357 print STDERR __LINE__, ": min_float_slop=$min_floating_slop\n" if DEBUG;
358 }
359
360 # Back off a couple orders of magnitude,
361 # just to be safe.
362 $min_floating_slop *= 100;
363 }
364
365 if ($epsilon < $min_floating_slop) {
366 $epsilon = $min_floating_slop;
367 }
368 print STDERR __LINE__, ": fraction=.$fraction; epsilon=$epsilon\n" if DEBUG;
369
370 undef $table;
371
372 # And for each possible rational in the table,
373 # see if it is within epsilon of the input.
374 foreach my $official
375 (keys %utf8::nv_floating_to_rational)
376 {
377 print STDERR __LINE__, ": epsilon=$epsilon, official=$official, diff=", abs($parts[0] - $official), "\n" if DEBUG;
378 if (abs($parts[0] - $official) < $epsilon) {
379 $table =
380 $utf8::nv_floating_to_rational{$official};
381 last;
382 }
383 }
384
385 # Quit if didn't find one.
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386 if (! defined $table) {
387 pop @recursed if @recursed;
388 return $type;
389 }
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390 }
391 }
392 print STDERR __LINE__, ": $property=$table\n" if DEBUG;
393 }
394 }
395
396 # Combine lhs (if any) and rhs to get something that matches
397 # the syntax of the lookups.
398 $property_and_table = "$prefix$table";
399 print STDERR __LINE__, ": $property_and_table\n" if DEBUG;
400
401 # First try stricter matching.
402 $file = $utf8::stricter_to_file_of{$property_and_table};
403
404 # If didn't find it, try again with looser matching by editing
405 # out the applicable characters on the rhs and looking up
406 # again.
e1dc048d 407 my $strict_property_and_table;
99870f4d 408 if (! defined $file) {
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409
410 # This isn't used unless the name begins with 'to'
411 $strict_property_and_table = $property_and_table =~ s/^to//r;
c4ab2516 412 $table = _loose_name($table);
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413 $property_and_table = "$prefix$table";
414 print STDERR __LINE__, ": $property_and_table\n" if DEBUG;
415 $file = $utf8::loose_to_file_of{$property_and_table};
416 }
417
418 # Add the constant and go fetch it in.
419 if (defined $file) {
a6517ebf 420
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421 # If the file name contains a !, it means to invert. The
422 # 0+ makes sure result is numeric
423 $invert_it = 0 + $file =~ s/!//;
a6517ebf 424
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425 if ($utf8::why_deprecated{$file}) {
426 warnings::warnif('deprecated', "Use of '$type' in \\p{} or \\P{} is deprecated because: $utf8::why_deprecated{$file};");
427 }
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428
429 if ($caseless
430 && exists $utf8::caseless_equivalent{$property_and_table})
431 {
432 $file = $utf8::caseless_equivalent{$property_and_table};
433 }
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434
435 # The pseudo-directory '#' means that there really isn't a
436 # file to read, the data is in-line as part of the string;
437 # we extract it below.
438 $file = "$unicore_dir/lib/$file.pl" unless $file =~ m!^#/!;
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439 last GETFILE;
440 }
441 print STDERR __LINE__, ": didn't find $property_and_table\n" if DEBUG;
442
443 ##
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444 ## Last attempt -- see if it's a standard "To" name
445 ## (e.g. "ToLower") ToTitle is used by ucfirst().
446 ## The user-level way to access ToDigit() and ToFold()
447 ## is to use Unicode::UCD.
448 ##
cf2cd801 449 # Only check if caller wants non-binary
6aec79bd 450 my $retried = 0;
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451 if ($minbits != 1) {
452 if ($property_and_table =~ s/^to//) {
cf2cd801 453 # Look input up in list of properties for which we have
e1dc048d 454 # mapping files. First do it with the strict approach
5a8dc5ca
KW
455 if (defined ($file = $utf8::strict_property_to_file_of{
456 $strict_property_and_table}))
e1dc048d
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457 {
458 $type = $utf8::file_to_swash_name{$file};
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459 print STDERR __LINE__, ": type set to $type\n"
460 if DEBUG;
e1dc048d
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461 $file = "$unicore_dir/$file.pl";
462 last GETFILE;
463 }
464 elsif (defined ($file =
cf2cd801 465 $utf8::loose_property_to_file_of{$property_and_table}))
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466 {
467 $type = $utf8::file_to_swash_name{$file};
468 print STDERR __LINE__, ": type set to $type\n"
469 if DEBUG;
470 $file = "$unicore_dir/$file.pl";
471 last GETFILE;
472 } # If that fails see if there is a corresponding binary
473 # property file
474 elsif (defined ($file =
475 $utf8::loose_to_file_of{$property_and_table}))
476 {
6aec79bd 477
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478 # Here, there is no map file for the property we
479 # are trying to get the map of, but this is a
480 # binary property, and there is a file for it that
481 # can easily be translated to a mapping.
482
483 # In the case of properties that are forced to
484 # binary, they are a combination. We return the
485 # actual mapping instead of the binary. If the
486 # input is something like 'Tocjkkiicore', it will
487 # be found in %loose_property_to_file_of above as
488 # => 'To/kIICore'. But the form like ToIskiicore
489 # won't be. To fix this, it was easiest to do it
490 # here. These properties are the complements of
491 # the default property, so there is an entry in
492 # %loose_to_file_of that is 'iskiicore' =>
493 # '!kIICore/N', If we find such an entry, strip
494 # off things and try again, which should find the
495 # entry in %loose_property_to_file_of. Actual
496 # binary properties that are of this form, such as
497 # this entry: 'ishrkt' => '!Perl/Any' will also be
498 # retried, but won't be in
499 # %loose_property_to_file_of, and instead the next
500 # time through, it will find 'hrkt' => '!Perl/Any'
501 # and proceed.
502 redo if ! $retried
503 && $file =~ /^!/
504 && $property_and_table =~ s/^is//;
505
506 # This is a binary property. Setting this here
507 # causes it to be stored as such in the cache, so
508 # if someone comes along later looking for just a
509 # binary, they get it.
510 $minbits = 1;
511
512 # The 0+ makes sure is numeric
513 $invert_it = 0 + $file =~ s/!//;
514 $file = "$unicore_dir/lib/$file.pl"
515 unless $file =~ m!^#/!;
516 last GETFILE;
517 }
cf2cd801 518 }
e1dc048d 519 }
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520
521 ##
522 ## If we reach this line, it's because we couldn't figure
523 ## out what to do with $type. Ouch.
524 ##
525
3dd10fe8 526 pop @recursed if @recursed;
99870f4d 527 return $type;
c9db9632 528 } # end of GETFILE block
cf25bb62 529
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530 if (defined $file) {
531 print STDERR __LINE__, ": found it (file='$file')\n" if DEBUG;
532
533 ##
534 ## If we reach here, it was due to a 'last GETFILE' above
535 ## (exception: user-defined properties and mappings), so we
536 ## have a filename, so now we load it if we haven't already.
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537
538 # The pseudo-directory '#' means the result isn't really a
539 # file, but is in-line, with semi-colons to be turned into
540 # new-lines. Since it is in-line there is no advantage to
541 # caching the result
542 if ($file =~ s!^#/!!) {
3854b4b8 543 $list = $utf8::inline_definitions[$file];
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544 }
545 else {
546 # Here, we have an actual file to read in and load, but it
547 # may already have been read-in and cached. The cache key
548 # is the class and file to load, and whether the results
549 # need to be inverted.
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KW
550 my $found = $Cache{$class, $file, $invert_it};
551 if ($found and ref($found) eq $class) {
552 print STDERR __LINE__, ": Returning cached swash for '$class,$file,$invert_it' for \\p{$type}\n" if DEBUG;
553 pop @recursed if @recursed;
554 return $found;
555 }
99870f4d 556
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KW
557 local $@;
558 local $!;
559 $list = do $file; die $@ if $@;
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KW
560 }
561
7b953548 562 $list_is_from_mktables = 1;
0a0ffbce 563 }
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564 } # End of $type is non-null
565
566 # Here, either $type was null, or we found the requested property and
567 # read it into $list
cf25bb62 568
7b953548 569 my $extras = "";
c9db9632 570
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571 my $bits = $minbits;
572
7b953548
KW
573 # mktables lists don't have extras, like '&utf8::prop', so don't need
574 # to separate them; also lists are already sorted, so don't need to do
575 # that.
576 if ($list && ! $list_is_from_mktables) {
0e9be77f 577 my $taint = substr($list,0,0); # maintain taint
9b225781 578
cb6d3474
KW
579 # Separate the extras from the code point list, and make sure
580 # user-defined properties and tr/// are well-behaved for
581 # downstream code.
582 if ($user_defined || $none) {
9b225781
KW
583 my @tmp = split(/^/m, $list);
584 my %seen;
585 no warnings;
586
587 # The extras are anything that doesn't begin with a hex digit.
588 $extras = join '', $taint, grep /^[^0-9a-fA-F]/, @tmp;
589
590 # Remove the extras, and sort the remaining entries by the
591 # numeric value of their beginning hex digits, removing any
592 # duplicates.
593 $list = join '', $taint,
594 map { $_->[1] }
595 sort { $a->[0] <=> $b->[0] }
55e767ae
RGS
596 map { /^([0-9a-fA-F]+)/ && !$seen{$1}++ ? [ CORE::hex($1), $_ ] : () }
597 @tmp; # XXX doesn't do ranges right
4de6d205
KW
598 }
599 else {
600 # mktables has gone to some trouble to make non-user defined
601 # properties well-behaved, so we can skip the effort we do for
602 # user-defined ones. Any extras are at the very beginning of
603 # the string.
604
605 # This regex splits out the first lines of $list into $1 and
606 # strips them off from $list, until we get one that begins
607 # with a hex number, alone on the line, or followed by a tab.
608 # Either portion may be empty.
609 $list =~ s/ \A ( .*? )
610 (?: \z | (?= ^ [0-9a-fA-F]+ (?: \t | $) ) )
611 //msx;
612
613 $extras = "$taint$1";
614 }
99870f4d 615 }
a0ed51b3 616
99870f4d
KW
617 if ($none) {
618 my $hextra = sprintf "%04x", $none + 1;
619 $list =~ s/\tXXXX$/\t$hextra/mg;
620 }
a0ed51b3 621
99870f4d
KW
622 if ($minbits != 1 && $minbits < 32) { # not binary property
623 my $top = 0;
624 while ($list =~ /^([0-9a-fA-F]+)(?:[\t]([0-9a-fA-F]+)?)(?:[ \t]([0-9a-fA-F]+))?/mg) {
625 my $min = CORE::hex $1;
626 my $max = defined $2 ? CORE::hex $2 : $min;
627 my $val = defined $3 ? CORE::hex $3 : 0;
628 $val += $max - $min if defined $3;
629 $top = $val if $val > $top;
630 }
631 my $topbits =
632 $top > 0xffff ? 32 :
633 $top > 0xff ? 16 : 8;
634 $bits = $topbits if $bits < $topbits;
635 }
a0ed51b3 636
99870f4d
KW
637 my @extras;
638 if ($extras) {
639 for my $x ($extras) {
0e9be77f 640 my $taint = substr($x,0,0); # maintain taint
99870f4d
KW
641 pos $x = 0;
642 while ($x =~ /^([^0-9a-fA-F\n])(.*)/mg) {
0e9be77f
DM
643 my $char = "$1$taint";
644 my $name = "$2$taint";
645 print STDERR __LINE__, ": char [$char] => name [$name]\n"
646 if DEBUG;
99870f4d
KW
647 if ($char =~ /[-+!&]/) {
648 my ($c,$t) = split(/::/, $name, 2); # bogus use of ::, really
649 my $subobj;
650 if ($c eq 'utf8') {
651 $subobj = utf8->SWASHNEW($t, "", $minbits, 0);
652 }
653 elsif (exists &$name) {
654 $subobj = utf8->SWASHNEW($name, "", $minbits, 0);
655 }
656 elsif ($c =~ /^([0-9a-fA-F]+)/) {
657 $subobj = utf8->SWASHNEW("", $c, $minbits, 0);
658 }
25df5e40 659 print STDERR __LINE__, ": returned from getting sub object for $name\n" if DEBUG;
3dd10fe8
KW
660 if (! ref $subobj) {
661 pop @recursed if @recursed && $type;
662 return $subobj;
663 }
99870f4d
KW
664 push @extras, $name => $subobj;
665 $bits = $subobj->{BITS} if $bits < $subobj->{BITS};
04e9cbbb
KW
666 $user_defined = $subobj->{USER_DEFINED}
667 if $subobj->{USER_DEFINED};
99870f4d
KW
668 }
669 }
670 }
671 }
a0ed51b3 672
99870f4d 673 if (DEBUG) {
0fada5e1 674 print STDERR __LINE__, ": CLASS = $class, TYPE => $type, BITS => $bits, NONE => $none, INVERT_IT => $invert_it, USER_DEFINED => $user_defined";
99870f4d
KW
675 print STDERR "\nLIST =>\n$list" if defined $list;
676 print STDERR "\nEXTRAS =>\n$extras" if defined $extras;
677 print STDERR "\n";
678 }
a0ed51b3 679
99870f4d
KW
680 my $SWASH = bless {
681 TYPE => $type,
682 BITS => $bits,
683 EXTRAS => $extras,
684 LIST => $list,
685 NONE => $none,
0fada5e1 686 USER_DEFINED => $user_defined,
99870f4d
KW
687 @extras,
688 } => $class;
689
690 if ($file) {
4a7e937e 691 $Cache{$class, $file, $invert_it} = $SWASH;
64870e05
KW
692 if ($type
693 && exists $utf8::SwashInfo{$type}
694 && exists $utf8::SwashInfo{$type}{'specials_name'})
695 {
696 my $specials_name = $utf8::SwashInfo{$type}{'specials_name'};
697 no strict "refs";
69b36ee0 698 print STDERR "\nspecials_name => $specials_name\n" if DEBUG;
64870e05
KW
699 $SWASH->{'SPECIALS'} = \%$specials_name;
700 }
a6517ebf 701 $SWASH->{'INVERT_IT'} = $invert_it;
99870f4d 702 }
5beb625e 703
3dd10fe8
KW
704 pop @recursed if @recursed && $type;
705
99870f4d 706 return $SWASH;
5beb625e 707 }
a0ed51b3
LW
708}
709
b0e3252e 710# Now SWASHGET is recasted into a C function S_swatch_get (see utf8.c).
a0ed51b3
LW
711
7121;