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  Run on Fri Jul 31 19:05:14 2015
Reported on Fri Jul 31 19:08:10 2015

Filename/usr/share/perl5/vendor_perl/Locale/Maketext.pm
StatementsExecuted 35 statements in 8.18ms
Subroutines
Calls P F Exclusive
Time
Inclusive
Time
Subroutine
1114.43ms4.63msLocale::Maketext::::BEGIN@7Locale::Maketext::BEGIN@7
1111.99ms2.47msLocale::Maketext::::BEGIN@8Locale::Maketext::BEGIN@8
11132µs172µsLocale::Maketext::::BEGIN@4Locale::Maketext::BEGIN@4
11131µs61µsLocale::Maketext::::BEGIN@3Locale::Maketext::BEGIN@3
11129µs42µsLocale::Maketext::::BEGIN@17Locale::Maketext::BEGIN@17
11128µs33µsLocale::Maketext::::BEGIN@98Locale::Maketext::BEGIN@98
11119µs27µsLocale::Maketext::::BEGIN@106Locale::Maketext::BEGIN@106
11119µs44µsLocale::Maketext::::BEGIN@441Locale::Maketext::BEGIN@441
11119µs36µsLocale::Maketext::::BEGIN@442Locale::Maketext::BEGIN@442
11118µs50µsLocale::Maketext::::BEGIN@468Locale::Maketext::BEGIN@468
11118µs35µsLocale::Maketext::::BEGIN@469Locale::Maketext::BEGIN@469
11111µs11µsLocale::Maketext::::BEGIN@6Locale::Maketext::BEGIN@6
1116µs6µsLocale::Maketext::::BEGIN@12Locale::Maketext::BEGIN@12
0000s0sLocale::Maketext::::_add_supersLocale::Maketext::_add_supers
0000s0sLocale::Maketext::::_ambient_langprefsLocale::Maketext::_ambient_langprefs
0000s0sLocale::Maketext::::_compileLocale::Maketext::_compile
0000s0sLocale::Maketext::::_die_pointingLocale::Maketext::_die_pointing
0000s0sLocale::Maketext::::_langtag_mungingLocale::Maketext::_langtag_munging
0000s0sLocale::Maketext::::_lex_refsLocale::Maketext::_lex_refs
0000s0sLocale::Maketext::::_try_useLocale::Maketext::_try_use
0000s0sLocale::Maketext::::clear_isa_scanLocale::Maketext::clear_isa_scan
0000s0sLocale::Maketext::::encodingLocale::Maketext::encoding
0000s0sLocale::Maketext::::fail_withLocale::Maketext::fail_with
0000s0sLocale::Maketext::::failure_handler_autoLocale::Maketext::failure_handler_auto
0000s0sLocale::Maketext::::fallback_language_classesLocale::Maketext::fallback_language_classes
0000s0sLocale::Maketext::::fallback_languagesLocale::Maketext::fallback_languages
0000s0sLocale::Maketext::::get_handleLocale::Maketext::get_handle
0000s0sLocale::Maketext::::initLocale::Maketext::init
0000s0sLocale::Maketext::::language_tagLocale::Maketext::language_tag
0000s0sLocale::Maketext::::maketextLocale::Maketext::maketext
0000s0sLocale::Maketext::::newLocale::Maketext::new
0000s0sLocale::Maketext::::numerateLocale::Maketext::numerate
0000s0sLocale::Maketext::::numfLocale::Maketext::numf
0000s0sLocale::Maketext::::quantLocale::Maketext::quant
0000s0sLocale::Maketext::::sprintfLocale::Maketext::sprintf
Call graph for these subroutines as a Graphviz dot language file.
Line State
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Time
on line
Calls Time
in subs
Code
1
2package Locale::Maketext;
3287µs290µs
# spent 61µs (31+29) within Locale::Maketext::BEGIN@3 which was called: # once (31µs+29µs) by Foswiki::BEGIN@7 at line 3
use strict;
# spent 61µs making 1 call to Locale::Maketext::BEGIN@3 # spent 29µs making 1 call to strict::import
4123µs1139µs
# spent 172µs (32+139) within Locale::Maketext::BEGIN@4 which was called: # once (32µs+139µs) by Foswiki::BEGIN@7 at line 5
use vars qw( @ISA $VERSION $MATCH_SUPERS $USING_LANGUAGE_TAGS
# spent 139µs making 1 call to vars::import
5150µs1172µs$USE_LITERALS $MATCH_SUPERS_TIGHTLY);
# spent 172µs making 1 call to Locale::Maketext::BEGIN@4
6245µs111µs
# spent 11µs within Locale::Maketext::BEGIN@6 which was called: # once (11µs+0s) by Foswiki::BEGIN@7 at line 6
use Carp ();
# spent 11µs making 1 call to Locale::Maketext::BEGIN@6
72247µs14.63ms
# spent 4.63ms (4.43+199µs) within Locale::Maketext::BEGIN@7 which was called: # once (4.43ms+199µs) by Foswiki::BEGIN@7 at line 7
use I18N::LangTags ();
# spent 4.63ms making 1 call to Locale::Maketext::BEGIN@7
82282µs12.47ms
# spent 2.47ms (1.99+474µs) within Locale::Maketext::BEGIN@8 which was called: # once (1.99ms+474µs) by Foswiki::BEGIN@7 at line 8
use I18N::LangTags::Detect ();
# spent 2.47ms making 1 call to Locale::Maketext::BEGIN@8
9
10#--------------------------------------------------------------------------
11
121141µs16µs
# spent 6µs within Locale::Maketext::BEGIN@12 which was called: # once (6µs+0s) by Foswiki::BEGIN@7 at line 12
BEGIN { unless(defined &DEBUG) { *DEBUG = sub () {0} } }
# spent 6µs making 1 call to Locale::Maketext::BEGIN@12
13# define the constant 'DEBUG' at compile-time
14
15# turn on utf8 if we have it (this is what GutsLoader.pm used to do essentially )
16# use if (exists $INC{'utf8.pm'} || eval 'use utf8'), 'utf8';
17
# spent 42µs (29+13) within Locale::Maketext::BEGIN@17 which was called: # once (29µs+13µs) by Foswiki::BEGIN@7 at line 27
BEGIN {
18
19 # if we have it || we can load it
2018µs if ( exists $INC{'utf8.pm'} || eval { local $SIG{'__DIE__'};require utf8; } ) {
21117µs113µs utf8->import();
# spent 13µs making 1 call to utf8::import
221600ns DEBUG and warn " utf8 on for _compile()\n";
23 }
24 else {
25 DEBUG and warn " utf8 not available for _compile() ($INC{'utf8.pm'})\n$@\n";
26 }
271634µs142µs}
# spent 42µs making 1 call to Locale::Maketext::BEGIN@17
28
29
3011µs$VERSION = '1.23';
3119µs@ISA = ();
32
331500ns$MATCH_SUPERS = 1;
341300ns$MATCH_SUPERS_TIGHTLY = 1;
351200ns$USING_LANGUAGE_TAGS = 1;
36# Turning this off is somewhat of a security risk in that little or no
37# checking will be done on the legality of tokens passed to the
38# eval("use $module_name") in _try_use. If you turn this off, you have
39# to do your own taint checking.
40
411700ns$USE_LITERALS = 1 unless defined $USE_LITERALS;
42# a hint for compiling bracket-notation things.
43
4411µsmy %isa_scan = ();
45
46###########################################################################
47
48sub quant {
49 my($handle, $num, @forms) = @_;
50
51 return $num if @forms == 0; # what should this mean?
52 return $forms[2] if @forms > 2 and $num == 0; # special zeroth case
53
54 # Normal case:
55 # Note that the formatting of $num is preserved.
56 return( $handle->numf($num) . ' ' . $handle->numerate($num, @forms) );
57 # Most human languages put the number phrase before the qualified phrase.
58}
59
60
61sub numerate {
62 # return this lexical item in a form appropriate to this number
63 my($handle, $num, @forms) = @_;
64 my $s = ($num == 1);
65
66 return '' unless @forms;
67 if(@forms == 1) { # only the headword form specified
68 return $s ? $forms[0] : ($forms[0] . 's'); # very cheap hack.
69 }
70 else { # sing and plural were specified
71 return $s ? $forms[0] : $forms[1];
72 }
73}
74
75#--------------------------------------------------------------------------
76
77sub numf {
78 my($handle, $num) = @_[0,1];
79 if($num < 10_000_000_000 and $num > -10_000_000_000 and $num == int($num)) {
80 $num += 0; # Just use normal integer stringification.
81 # Specifically, don't let %G turn ten million into 1E+007
82 }
83 else {
84 $num = CORE::sprintf('%G', $num);
85 # "CORE::" is there to avoid confusion with the above sub sprintf.
86 }
87 while( $num =~ s/^([-+]?\d+)(\d{3})/$1,$2/s ) {1} # right from perlfaq5
88 # The initial \d+ gobbles as many digits as it can, and then we
89 # backtrack so it un-eats the rightmost three, and then we
90 # insert the comma there.
91
92 $num =~ tr<.,><,.> if ref($handle) and $handle->{'numf_comma'};
93 # This is just a lame hack instead of using Number::Format
94 return $num;
95}
96
97sub sprintf {
982114µs238µs
# spent 33µs (28+5) within Locale::Maketext::BEGIN@98 which was called: # once (28µs+5µs) by Foswiki::BEGIN@7 at line 98
no integer;
# spent 33µs making 1 call to Locale::Maketext::BEGIN@98 # spent 5µs making 1 call to integer::unimport
99 my($handle, $format, @params) = @_;
100 return CORE::sprintf($format, @params);
101 # "CORE::" is there to avoid confusion with myself!
102}
103
104#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#=#
105
10623.29ms234µs
# spent 27µs (19+8) within Locale::Maketext::BEGIN@106 which was called: # once (19µs+8µs) by Foswiki::BEGIN@7 at line 106
use integer; # vroom vroom... applies to the whole rest of the module
# spent 27µs making 1 call to Locale::Maketext::BEGIN@106 # spent 8µs making 1 call to integer::import
107
108sub language_tag {
109 my $it = ref($_[0]) || $_[0];
110 return undef unless $it =~ m/([^':]+)(?:::)?$/s;
111 $it = lc($1);
112 $it =~ tr<_><->;
113 return $it;
114}
115
116sub encoding {
117 my $it = $_[0];
118 return(
119 (ref($it) && $it->{'encoding'})
120 || 'iso-8859-1' # Latin-1
121 );
122}
123
124#--------------------------------------------------------------------------
125
126sub fallback_languages { return('i-default', 'en', 'en-US') }
127
128sub fallback_language_classes { return () }
129
130#--------------------------------------------------------------------------
131
132sub fail_with { # an actual attribute method!
133 my($handle, @params) = @_;
134 return unless ref($handle);
135 $handle->{'fail'} = $params[0] if @params;
136 return $handle->{'fail'};
137}
138
139#--------------------------------------------------------------------------
140
141sub failure_handler_auto {
142 # Meant to be used like:
143 # $handle->fail_with('failure_handler_auto')
144
145 my $handle = shift;
146 my $phrase = shift;
147
148 $handle->{'failure_lex'} ||= {};
149 my $lex = $handle->{'failure_lex'};
150
151 my $value ||= ($lex->{$phrase} ||= $handle->_compile($phrase));
152
153 # Dumbly copied from sub maketext:
154 return ${$value} if ref($value) eq 'SCALAR';
155 return $value if ref($value) ne 'CODE';
156 {
157 local $SIG{'__DIE__'};
158 eval { $value = &$value($handle, @_) };
159 }
160 # If we make it here, there was an exception thrown in the
161 # call to $value, and so scream:
162 if($@) {
163 # pretty up the error message
164 $@ =~ s{\s+at\s+\(eval\s+\d+\)\s+line\s+(\d+)\.?\n?}
165 {\n in bracket code [compiled line $1],}s;
166 #$err =~ s/\n?$/\n/s;
167 Carp::croak "Error in maketexting \"$phrase\":\n$@ as used";
168 # Rather unexpected, but suppose that the sub tried calling
169 # a method that didn't exist.
170 }
171 else {
172 return $value;
173 }
174}
175
176#==========================================================================
177
178sub new {
179 # Nothing fancy!
180 my $class = ref($_[0]) || $_[0];
181 my $handle = bless {}, $class;
182 $handle->init;
183 return $handle;
184}
185
186sub init { return } # no-op
187
188###########################################################################
189
190sub maketext {
191 # Remember, this can fail. Failure is controllable many ways.
192 Carp::croak 'maketext requires at least one parameter' unless @_ > 1;
193
194 my($handle, $phrase) = splice(@_,0,2);
195 Carp::confess('No handle/phrase') unless (defined($handle) && defined($phrase));
196
197 # backup $@ in case it it's still being used in the calling code.
198 # If no failures, we'll re-set it back to what it was later.
199 my $at = $@;
200
201 # Copy @_ case one of its elements is $@.
202 @_ = @_;
203
204 # Look up the value:
205
206 my $value;
207 if (exists $handle->{'_external_lex_cache'}{$phrase}) {
208 DEBUG and warn "* Using external lex cache version of \"$phrase\"\n";
209 $value = $handle->{'_external_lex_cache'}{$phrase};
210 }
211 else {
212 foreach my $h_r (
213 @{ $isa_scan{ref($handle) || $handle} || $handle->_lex_refs }
214 ) {
215 DEBUG and warn "* Looking up \"$phrase\" in $h_r\n";
216 if(exists $h_r->{$phrase}) {
217 DEBUG and warn " Found \"$phrase\" in $h_r\n";
218 unless(ref($value = $h_r->{$phrase})) {
219 # Nonref means it's not yet compiled. Compile and replace.
220 if ($handle->{'use_external_lex_cache'}) {
221 $value = $handle->{'_external_lex_cache'}{$phrase} = $handle->_compile($value);
222 }
223 else {
224 $value = $h_r->{$phrase} = $handle->_compile($value);
225 }
226 }
227 last;
228 }
229 # extending packages need to be able to localize _AUTO and if readonly can't "local $h_r->{'_AUTO'} = 1;"
230 # but they can "local $handle->{'_external_lex_cache'}{'_AUTO'} = 1;"
231 elsif($phrase !~ m/^_/s and ($handle->{'use_external_lex_cache'} ? ( exists $handle->{'_external_lex_cache'}{'_AUTO'} ? $handle->{'_external_lex_cache'}{'_AUTO'} : $h_r->{'_AUTO'} ) : $h_r->{'_AUTO'})) {
232 # it's an auto lex, and this is an autoable key!
233 DEBUG and warn " Automaking \"$phrase\" into $h_r\n";
234 if ($handle->{'use_external_lex_cache'}) {
235 $value = $handle->{'_external_lex_cache'}{$phrase} = $handle->_compile($phrase);
236 }
237 else {
238 $value = $h_r->{$phrase} = $handle->_compile($phrase);
239 }
240 last;
241 }
242 DEBUG>1 and print " Not found in $h_r, nor automakable\n";
243 # else keep looking
244 }
245 }
246
247 unless(defined($value)) {
248 DEBUG and warn "! Lookup of \"$phrase\" in/under ", ref($handle) || $handle, " fails.\n";
249 if(ref($handle) and $handle->{'fail'}) {
250 DEBUG and warn "WARNING0: maketext fails looking for <$phrase>\n";
251 my $fail;
252 if(ref($fail = $handle->{'fail'}) eq 'CODE') { # it's a sub reference
253 $@ = $at; # Put $@ back in case we altered it along the way.
254 return &{$fail}($handle, $phrase, @_);
255 # If it ever returns, it should return a good value.
256 }
257 else { # It's a method name
258 $@ = $at; # Put $@ back in case we altered it along the way.
259 return $handle->$fail($phrase, @_);
260 # If it ever returns, it should return a good value.
261 }
262 }
263 else {
264 # All we know how to do is this;
265 Carp::croak("maketext doesn't know how to say:\n$phrase\nas needed");
266 }
267 }
268
269 if(ref($value) eq 'SCALAR'){
270 $@ = $at; # Put $@ back in case we altered it along the way.
271 return $$value ;
272 }
273 if(ref($value) ne 'CODE'){
274 $@ = $at; # Put $@ back in case we altered it along the way.
275 return $value ;
276 }
277
278 {
279 local $SIG{'__DIE__'};
280 eval { $value = &$value($handle, @_) };
281 }
282 # If we make it here, there was an exception thrown in the
283 # call to $value, and so scream:
284 if ($@) {
285 # pretty up the error message
286 $@ =~ s{\s+at\s+\(eval\s+\d+\)\s+line\s+(\d+)\.?\n?}
287 {\n in bracket code [compiled line $1],}s;
288 #$err =~ s/\n?$/\n/s;
289 Carp::croak "Error in maketexting \"$phrase\":\n$@ as used";
290 # Rather unexpected, but suppose that the sub tried calling
291 # a method that didn't exist.
292 }
293 else {
294 $@ = $at; # Put $@ back in case we altered it along the way.
295 return $value;
296 }
297 $@ = $at; # Put $@ back in case we altered it along the way.
298}
299
300###########################################################################
301
302sub get_handle { # This is a constructor and, yes, it CAN FAIL.
303 # Its class argument has to be the base class for the current
304 # application's l10n files.
305
306 my($base_class, @languages) = @_;
307 $base_class = ref($base_class) || $base_class;
308 # Complain if they use __PACKAGE__ as a project base class?
309
310 if( @languages ) {
311 DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
312 if($USING_LANGUAGE_TAGS) { # An explicit language-list was given!
313 @languages =
314 map {; $_, I18N::LangTags::alternate_language_tags($_) }
315 # Catch alternation
316 map I18N::LangTags::locale2language_tag($_),
317 # If it's a lg tag, fine, pass thru (untainted)
318 # If it's a locale ID, try converting to a lg tag (untainted),
319 # otherwise nix it.
320 @languages;
321 DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
322 }
323 }
324 else {
325 @languages = $base_class->_ambient_langprefs;
326 }
327
328 @languages = $base_class->_langtag_munging(@languages);
329
330 my %seen;
331 foreach my $module_name ( map { $base_class . '::' . $_ } @languages ) {
332 next unless length $module_name; # sanity
333 next if $seen{$module_name}++ # Already been here, and it was no-go
334 || !&_try_use($module_name); # Try to use() it, but can't it.
335 return($module_name->new); # Make it!
336 }
337
338 return undef; # Fail!
339}
340
341###########################################################################
342
343sub _langtag_munging {
344 my($base_class, @languages) = @_;
345
346 # We have all these DEBUG statements because otherwise it's hard as hell
347 # to diagnose ifwhen something goes wrong.
348
349 DEBUG and warn 'Lgs1: ', map("<$_>", @languages), "\n";
350
351 if($USING_LANGUAGE_TAGS) {
352 DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
353 @languages = $base_class->_add_supers( @languages );
354
355 push @languages, I18N::LangTags::panic_languages(@languages);
356 DEBUG and warn "After adding panic languages:\n",
357 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
358
359 push @languages, $base_class->fallback_languages;
360 # You are free to override fallback_languages to return empty-list!
361 DEBUG and warn 'Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
362
363 @languages = # final bit of processing to turn them into classname things
364 map {
365 my $it = $_; # copy
366 $it =~ tr<-A-Z><_a-z>; # lc, and turn - to _
367 $it =~ tr<_a-z0-9><>cd; # remove all but a-z0-9_
368 $it;
369 } @languages
370 ;
371 DEBUG and warn "Nearing end of munging:\n",
372 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
373 }
374 else {
375 DEBUG and warn "Bypassing language-tags.\n",
376 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
377 }
378
379 DEBUG and warn "Before adding fallback classes:\n",
380 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
381
382 push @languages, $base_class->fallback_language_classes;
383 # You are free to override that to return whatever.
384
385 DEBUG and warn "Finally:\n",
386 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
387
388 return @languages;
389}
390
391###########################################################################
392
393sub _ambient_langprefs {
394 return I18N::LangTags::Detect::detect();
395}
396
397###########################################################################
398
399sub _add_supers {
400 my($base_class, @languages) = @_;
401
402 if (!$MATCH_SUPERS) {
403 # Nothing
404 DEBUG and warn "Bypassing any super-matching.\n",
405 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
406
407 }
408 elsif( $MATCH_SUPERS_TIGHTLY ) {
409 DEBUG and warn "Before adding new supers tightly:\n",
410 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
411 @languages = I18N::LangTags::implicate_supers( @languages );
412 DEBUG and warn "After adding new supers tightly:\n",
413 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
414
415 }
416 else {
417 DEBUG and warn "Before adding supers to end:\n",
418 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
419 @languages = I18N::LangTags::implicate_supers_strictly( @languages );
420 DEBUG and warn "After adding supers to end:\n",
421 ' Lgs@', __LINE__, ': ', map("<$_>", @languages), "\n";
422 }
423
424 return @languages;
425}
426
427###########################################################################
428#
429# This is where most people should stop reading.
430#
431###########################################################################
432
4331500nsmy %tried = ();
434# memoization of whether we've used this module, or found it unusable.
435
436sub _try_use { # Basically a wrapper around "require Modulename"
437 # "Many men have tried..." "They tried and failed?" "They tried and died."
438 return $tried{$_[0]} if exists $tried{$_[0]}; # memoization
439
440 my $module = $_[0]; # ASSUME sane module name!
441262µs268µs
# spent 44µs (19+25) within Locale::Maketext::BEGIN@441 which was called: # once (19µs+25µs) by Foswiki::BEGIN@7 at line 441
{ no strict 'refs';
# spent 44µs making 1 call to Locale::Maketext::BEGIN@441 # spent 25µs making 1 call to strict::unimport
4422276µs254µs
# spent 36µs (19+18) within Locale::Maketext::BEGIN@442 which was called: # once (19µs+18µs) by Foswiki::BEGIN@7 at line 442
no warnings 'once';
# spent 36µs making 1 call to Locale::Maketext::BEGIN@442 # spent 18µs making 1 call to warnings::unimport
443 return($tried{$module} = 1)
444 if %{$module . '::Lexicon'} or @{$module . '::ISA'};
445 # weird case: we never use'd it, but there it is!
446 }
447
448 DEBUG and warn " About to use $module ...\n";
449
450 local $SIG{'__DIE__'};
451 local $@;
452 eval "require $module"; # used to be "use $module", but no point in that.
453
454 if($@) {
455 DEBUG and warn "Error using $module \: $@\n";
456 return $tried{$module} = 0;
457 }
458 else {
459 DEBUG and warn " OK, $module is used\n";
460 return $tried{$module} = 1;
461 }
462}
463
464#--------------------------------------------------------------------------
465
466sub _lex_refs { # report the lexicon references for this handle's class
467 # returns an arrayREF!
468259µs282µs
# spent 50µs (18+32) within Locale::Maketext::BEGIN@468 which was called: # once (18µs+32µs) by Foswiki::BEGIN@7 at line 468
no strict 'refs';
# spent 50µs making 1 call to Locale::Maketext::BEGIN@468 # spent 32µs making 1 call to strict::unimport
46922.82ms252µs
# spent 35µs (18+17) within Locale::Maketext::BEGIN@469 which was called: # once (18µs+17µs) by Foswiki::BEGIN@7 at line 469
no warnings 'once';
# spent 35µs making 1 call to Locale::Maketext::BEGIN@469 # spent 17µs making 1 call to warnings::unimport
470 my $class = ref($_[0]) || $_[0];
471 DEBUG and warn "Lex refs lookup on $class\n";
472 return $isa_scan{$class} if exists $isa_scan{$class}; # memoization!
473
474 my @lex_refs;
475 my $seen_r = ref($_[1]) ? $_[1] : {};
476
477 if( defined( *{$class . '::Lexicon'}{'HASH'} )) {
478 push @lex_refs, *{$class . '::Lexicon'}{'HASH'};
479 DEBUG and warn '%' . $class . '::Lexicon contains ',
480 scalar(keys %{$class . '::Lexicon'}), " entries\n";
481 }
482
483 # Implements depth(height?)-first recursive searching of superclasses.
484 # In hindsight, I suppose I could have just used Class::ISA!
485 foreach my $superclass (@{$class . '::ISA'}) {
486 DEBUG and warn " Super-class search into $superclass\n";
487 next if $seen_r->{$superclass}++;
488 push @lex_refs, @{&_lex_refs($superclass, $seen_r)}; # call myself
489 }
490
491 $isa_scan{$class} = \@lex_refs; # save for next time
492 return \@lex_refs;
493}
494
495sub clear_isa_scan { %isa_scan = (); return; } # end on a note of simplicity!
496
497#--------------------------------------------------------------------------
498
499sub _compile {
500 # This big scary routine compiles an entry.
501 # It returns either a coderef if there's brackety bits in this, or
502 # otherwise a ref to a scalar.
503
504 my $string_to_compile = $_[1]; # There are taint issues using regex on @_ - perlbug 60378,27344
505
506 # The while() regex is more expensive than this check on strings that don't need a compile.
507 # this op causes a ~2% speed hit for strings that need compile and a 250% speed improvement
508 # on strings that don't need compiling.
509 return \"$string_to_compile" if($string_to_compile !~ m/[\[~\]]/ms); # return a string ref if chars [~] are not in the string
510
511 my $target = ref($_[0]) || $_[0];
512
513 my(@code);
514 my(@c) = (''); # "chunks" -- scratch.
515 my $call_count = 0;
516 my $big_pile = '';
517 {
518 my $in_group = 0; # start out outside a group
519 my($m, @params); # scratch
520
521 while($string_to_compile =~ # Iterate over chunks.
522 m/(
523 [^\~\[\]]+ # non-~[] stuff (Capture everything else here)
524 |
525 ~. # ~[, ~], ~~, ~other
526 |
527 \[ # [ presumably opening a group
528 |
529 \] # ] presumably closing a group
530 |
531 ~ # terminal ~ ?
532 |
533 $
534 )/xgs
535 ) {
536 DEBUG>2 and warn qq{ "$1"\n};
537
538 if($1 eq '[' or $1 eq '') { # "[" or end
539 # Whether this is "[" or end, force processing of any
540 # preceding literal.
541 if($in_group) {
542 if($1 eq '') {
543 $target->_die_pointing($string_to_compile, 'Unterminated bracket group');
544 }
545 else {
546 $target->_die_pointing($string_to_compile, 'You can\'t nest bracket groups');
547 }
548 }
549 else {
550 if ($1 eq '') {
551 DEBUG>2 and warn " [end-string]\n";
552 }
553 else {
554 $in_group = 1;
555 }
556 die "How come \@c is empty?? in <$string_to_compile>" unless @c; # sanity
557 if(length $c[-1]) {
558 # Now actually processing the preceding literal
559 $big_pile .= $c[-1];
560 if($USE_LITERALS and (
561 (ord('A') == 65)
562 ? $c[-1] !~ m/[^\x20-\x7E]/s
563 # ASCII very safe chars
564 : $c[-1] !~ m/[^ !"\#\$%&'()*+,\-.\/0-9:;<=>?\@A-Z[\\\]^_`a-z{|}~\x07]/s
565 # EBCDIC very safe chars
566 )) {
567 # normal case -- all very safe chars
568 $c[-1] =~ s/'/\\'/g;
569 push @code, q{ '} . $c[-1] . "',\n";
570 $c[-1] = ''; # reuse this slot
571 }
572 else {
573 $c[-1] =~ s/\\\\/\\/g;
574 push @code, ' $c[' . $#c . "],\n";
575 push @c, ''; # new chunk
576 }
577 }
578 # else just ignore the empty string.
579 }
580
581 }
582 elsif($1 eq ']') { # "]"
583 # close group -- go back in-band
584 if($in_group) {
585 $in_group = 0;
586
587 DEBUG>2 and warn " --Closing group [$c[-1]]\n";
588
589 # And now process the group...
590
591 if(!length($c[-1]) or $c[-1] =~ m/^\s+$/s) {
592 DEBUG>2 and warn " -- (Ignoring)\n";
593 $c[-1] = ''; # reset out chink
594 next;
595 }
596
597 #$c[-1] =~ s/^\s+//s;
598 #$c[-1] =~ s/\s+$//s;
599 ($m,@params) = split(/,/, $c[-1], -1); # was /\s*,\s*/
600
601 # A bit of a hack -- we've turned "~,"'s into DELs, so turn
602 # 'em into real commas here.
603 if (ord('A') == 65) { # ASCII, etc
604 foreach($m, @params) { tr/\x7F/,/ }
605 }
606 else { # EBCDIC (1047, 0037, POSIX-BC)
607 # Thanks to Peter Prymmer for the EBCDIC handling
608 foreach($m, @params) { tr/\x07/,/ }
609 }
610
611 # Special-case handling of some method names:
612 if($m eq '_*' or $m =~ m/^_(-?\d+)$/s) {
613 # Treat [_1,...] as [,_1,...], etc.
614 unshift @params, $m;
615 $m = '';
616 }
617 elsif($m eq '*') {
618 $m = 'quant'; # "*" for "times": "4 cars" is 4 times "cars"
619 }
620 elsif($m eq '#') {
621 $m = 'numf'; # "#" for "number": [#,_1] for "the number _1"
622 }
623
624 # Most common case: a simple, legal-looking method name
625 if($m eq '') {
626 # 0-length method name means to just interpolate:
627 push @code, ' (';
628 }
629 elsif($m =~ /^\w+$/s
630 # exclude anything fancy, especially fully-qualified module names
631 ) {
632 push @code, ' $_[0]->' . $m . '(';
633 }
634 else {
635 # TODO: implement something? or just too icky to consider?
636 $target->_die_pointing(
637 $string_to_compile,
638 "Can't use \"$m\" as a method name in bracket group",
639 2 + length($c[-1])
640 );
641 }
642
643 pop @c; # we don't need that chunk anymore
644 ++$call_count;
645
646 foreach my $p (@params) {
647 if($p eq '_*') {
648 # Meaning: all parameters except $_[0]
649 $code[-1] .= ' @_[1 .. $#_], ';
650 # and yes, that does the right thing for all @_ < 3
651 }
652 elsif($p =~ m/^_(-?\d+)$/s) {
653 # _3 meaning $_[3]
654 $code[-1] .= '$_[' . (0 + $1) . '], ';
655 }
656 elsif($USE_LITERALS and (
657 (ord('A') == 65)
658 ? $p !~ m/[^\x20-\x7E]/s
659 # ASCII very safe chars
660 : $p !~ m/[^ !"\#\$%&'()*+,\-.\/0-9:;<=>?\@A-Z[\\\]^_`a-z{|}~\x07]/s
661 # EBCDIC very safe chars
662 )) {
663 # Normal case: a literal containing only safe characters
664 $p =~ s/'/\\'/g;
665 $code[-1] .= q{'} . $p . q{', };
666 }
667 else {
668 # Stow it on the chunk-stack, and just refer to that.
669 push @c, $p;
670 push @code, ' $c[' . $#c . '], ';
671 }
672 }
673 $code[-1] .= "),\n";
674
675 push @c, '';
676 }
677 else {
678 $target->_die_pointing($string_to_compile, q{Unbalanced ']'});
679 }
680
681 }
682 elsif(substr($1,0,1) ne '~') {
683 # it's stuff not containing "~" or "[" or "]"
684 # i.e., a literal blob
685 my $text = $1;
686 $text =~ s/\\/\\\\/g;
687 $c[-1] .= $text;
688
689 }
690 elsif($1 eq '~~') { # "~~"
691 $c[-1] .= '~';
692
693 }
694 elsif($1 eq '~[') { # "~["
695 $c[-1] .= '[';
696
697 }
698 elsif($1 eq '~]') { # "~]"
699 $c[-1] .= ']';
700
701 }
702 elsif($1 eq '~,') { # "~,"
703 if($in_group) {
704 # This is a hack, based on the assumption that no-one will actually
705 # want a DEL inside a bracket group. Let's hope that's it's true.
706 if (ord('A') == 65) { # ASCII etc
707 $c[-1] .= "\x7F";
708 }
709 else { # EBCDIC (cp 1047, 0037, POSIX-BC)
710 $c[-1] .= "\x07";
711 }
712 }
713 else {
714 $c[-1] .= '~,';
715 }
716
717 }
718 elsif($1 eq '~') { # possible only at string-end, it seems.
719 $c[-1] .= '~';
720
721 }
722 else {
723 # It's a "~X" where X is not a special character.
724 # Consider it a literal ~ and X.
725 my $text = $1;
726 $text =~ s/\\/\\\\/g;
727 $c[-1] .= $text;
728 }
729 }
730 }
731
732 if($call_count) {
733 undef $big_pile; # Well, nevermind that.
734 }
735 else {
736 # It's all literals! Ahwell, that can happen.
737 # So don't bother with the eval. Return a SCALAR reference.
738 return \$big_pile;
739 }
740
741 die q{Last chunk isn't null??} if @c and length $c[-1]; # sanity
742 DEBUG and warn scalar(@c), " chunks under closure\n";
743 if(@code == 0) { # not possible?
744 DEBUG and warn "Empty code\n";
745 return \'';
746 }
747 elsif(@code > 1) { # most cases, presumably!
748 unshift @code, "join '',\n";
749 }
750 unshift @code, "use strict; sub {\n";
751 push @code, "}\n";
752
753 DEBUG and warn @code;
754 my $sub = eval(join '', @code);
755 die "$@ while evalling" . join('', @code) if $@; # Should be impossible.
756 return $sub;
757}
758
759#--------------------------------------------------------------------------
760
761sub _die_pointing {
762 # This is used by _compile to throw a fatal error
763 my $target = shift; # class name
764 # ...leaving $_[0] the error-causing text, and $_[1] the error message
765
766 my $i = index($_[0], "\n");
767
768 my $pointy;
769 my $pos = pos($_[0]) - (defined($_[2]) ? $_[2] : 0) - 1;
770 if($pos < 1) {
771 $pointy = "^=== near there\n";
772 }
773 else { # we need to space over
774 my $first_tab = index($_[0], "\t");
775 if($pos > 2 and ( -1 == $first_tab or $first_tab > pos($_[0]))) {
776 # No tabs, or the first tab is harmlessly after where we will point to,
777 # AND we're far enough from the margin that we can draw a proper arrow.
778 $pointy = ('=' x $pos) . "^ near there\n";
779 }
780 else {
781 # tabs screw everything up!
782 $pointy = substr($_[0],0,$pos);
783 $pointy =~ tr/\t //cd;
784 # make everything into whitespace, but preserving tabs
785 $pointy .= "^=== near there\n";
786 }
787 }
788
789 my $errmsg = "$_[1], in\:\n$_[0]";
790
791 if($i == -1) {
792 # No newline.
793 $errmsg .= "\n" . $pointy;
794 }
795 elsif($i == (length($_[0]) - 1) ) {
796 # Already has a newline at end.
797 $errmsg .= $pointy;
798 }
799 else {
800 # don't bother with the pointy bit, I guess.
801 }
802 Carp::croak( "$errmsg via $target, as used" );
803}
804
805111µs1;