1 package # hide from PAUSE
4 use DBIx::Class::StartupCheck; # load es early as we can, usually a noop
9 # For the love of everything that is crab-like: DO NOT reach into this
10 # The entire thing is really fragile and should not be screwed with
11 # unless absolutely and unavoidably necessary
12 our $__describe_class_query_cache;
15 package # hide from pause
28 BROKEN_FORK => (OS_NAME eq 'MSWin32') ? 1 : 0,
30 BROKEN_GOTO => ( PERL_VERSION < 5.008003 ) ? 1 : 0,
32 # perl -MScalar::Util=weaken -e 'weaken( $hash{key} = \"value" )'
33 BROKEN_WEAK_SCALARREF_VALUES => ( PERL_VERSION < 5.008003 ) ? 1 : 0,
35 HAS_ITHREADS => $Config{useithreads} ? 1 : 0,
37 TAINT_MODE => 0 + ${^TAINT}, # tri-state: 0, 1, -1
39 UNSTABLE_DOLLARAT => ( PERL_VERSION < 5.013002 ) ? 1 : 0,
43 # the "DBIC_" prefix below is crucial - this is what makes CI pick up
44 # all envvars without further adjusting its scripts
45 # DO NOT CHANGE to the more logical { $_ => !!( $ENV{"DBIC_$_"} ) }
47 { substr($_, 5) => !!( $ENV{$_} ) }
49 DBIC_SHUFFLE_UNORDERED_RESULTSETS
50 DBIC_ASSERT_NO_INTERNAL_WANTARRAY
51 DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS
52 DBIC_ASSERT_NO_ERRONEOUS_METAINSTANCE_USE
53 DBIC_STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE
54 DBIC_STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE
58 IV_SIZE => $Config{ivsize},
61 if ( PERL_VERSION < 5.009_005) {
63 constant->import( OLD_MRO => 1 );
66 # Yes, I know this is a rather PHP-ish name, but please first read
67 # https://metacpan.org/source/BOBTFISH/MRO-Compat-0.12/lib/MRO/Compat.pm#L363-368
69 # Even if we are using Class::C3::XS it still won't work, as doing
70 # defined( *{ "SubClass::"->{$_} }{CODE} )
71 # will set pkg_gen to the same value for SubClass and *ALL PARENTS*
73 *DBIx::Class::_Util::get_real_pkg_gen = sub ($) {
80 # the non-assign-unless-there-is-a-hash is deliberate
81 ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{gen} ||= (
82 Math::BigInt->new( '0x' . ( Digest::MD5::md5_hex( join "\0", map {
84 ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_}{methlist} ||= (
90 # RV to be hashed up and turned into a number
95 # stringification should be sufficient, ignore names/refaddr entirely
100 local $SIG{__DIE__} if $SIG{__DIE__};
101 # attributes::get may throw on blessed-false crefs :/
102 eval { @attrs = attributes::get( $_ ); 1 }
103 or warn "Unable to determine attributes of coderef $_ due to the following error: $@";
109 # skip dummy C::C3 helper crefs
110 ! ( ( $Class::C3::MRO{$cur_class} || {} )->{methods}{$_} )
113 ref(\ "${cur_class}::"->{$_} ) ne 'GLOB'
115 defined( *{ "${cur_class}::"->{$_} }{CODE} )
118 ? ( \&{"${cur_class}::$_"} )
121 keys %{ "${cur_class}::" }
127 ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{linear_isa}
129 mro::get_linear_isa($_[0])
133 ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{is_universal}
135 mro::is_universal($_[0])
137 ( $__describe_class_query_cache->{'!internal!'} || {} )->{UNIVERSAL}{linear_isa}
139 mro::get_linear_isa("UNIVERSAL")
148 constant->import( OLD_MRO => 0 );
149 *DBIx::Class::_Util::get_real_pkg_gen = \&mro::get_pkg_gen;
152 # Both of these are no longer used for anything. However bring
153 # them back after they were purged in 08a8d8f1, as there appear
154 # to be outfits with *COPY PASTED* pieces of lib/DBIx/Class/Storage/*
155 # in their production codebases. There is no point in breaking these
156 # if whatever they used actually continues to work
158 DBIx::Class::_Util::emit_loud_diag(
160 msg => "The @{[ (caller(1))[3] ]} constant is no more - adjust your code"
165 sub DBICTEST () { &$sigh }
166 sub PEEPEENESS () { &$sigh }
169 use constant SPURIOUS_VERSION_CHECK_WARNINGS => ( DBIx::Class::_ENV_::PERL_VERSION < 5.010 ? 1 : 0);
171 # FIXME - this is not supposed to be here
172 # Carp::Skip to the rescue soon
173 use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
177 use Storable 'nfreeze';
178 use Scalar::Util qw(weaken blessed reftype refaddr);
182 # Usually versions are not specified anywhere aside the Makefile.PL
183 # (writing them out in-code is extremely obnoxious)
184 # However without a recent enough Moo the quote_sub override fails
185 # in very puzzling and hard to detect ways: so add a version check
187 use Sub::Quote qw(qsub);
188 BEGIN { Sub::Quote->VERSION('2.002002') }
190 # Already correctly prototyped: perlbrew exec perl -MStorable -e 'warn prototype \&Storable::dclone'
191 BEGIN { *deep_clone = \&Storable::dclone }
195 sigwarn_silencer modver_gt_or_eq modver_gt_or_eq_and_lt
196 fail_on_internal_wantarray fail_on_internal_call
197 refdesc refcount hrefaddr set_subname get_subname describe_class_methods
198 scope_guard detected_reinvoked_destructor emit_loud_diag
200 is_exception dbic_internal_try visit_namespaces
201 quote_sub qsub perlstring serialize deep_clone dump_value uniq
203 UNRESOLVABLE_CONDITION
206 use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
208 # Override forcing no_defer, and adding naming consistency checks
209 our %refs_closed_over_by_quote_sub_installed_crefs;
211 Carp::confess( "Anonymous quoting not supported by the DBIC quote_sub override - supply a sub name" ) if
219 Carp::confess( "The DBIC quote_sub override expects sub name '$_[0]' to be fully qualified" )
220 unless (my $stash) = $_[0] =~ /^(.+)::/;
223 "The DBIC sub_quote override does not support 'no_install'"
231 'The DBIC quote_sub override expects the namespace-part of sub name '
232 . "'$_[0]' to match the supplied package argument '$_[3]->{package}'"
236 defined $_[3]->{package}
238 $stash ne $_[3]->{package}
241 my @caller = caller(0);
243 package => $caller[0],
245 warning_bits => $caller[9],
246 hintshash => $caller[10],
249 # explicitly forced for everything
254 # just use a growing counter, no need to perform neither compaction
255 # nor any special ithread-level handling
256 $refs_closed_over_by_quote_sub_installed_crefs
257 { scalar keys %refs_closed_over_by_quote_sub_installed_crefs }
263 ! DBIx::Class::_ENV_::BROKEN_WEAK_SCALARREF_VALUES
267 } values %{ $_[2] || {} };
269 Sub::Quote::quote_sub( $_[0], $_[1], $_[2]||{}, $sq_opts );
272 sub sigwarn_silencer ($) {
275 croak "Expecting a regexp" if ref $pattern ne 'Regexp';
277 my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) };
279 return sub { &$orig_sig_warn unless $_[0] =~ $pattern };
282 sub perlstring ($) { q{"}. quotemeta( shift ). q{"} };
284 sub hrefaddr ($) { sprintf '0x%x', &refaddr||0 }
287 croak "Expecting a reference" if ! length ref $_[0];
289 # be careful not to trigger stringification,
290 # reuse @_ as a scratch-pad
291 sprintf '%s%s(0x%x)',
292 ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ),
299 croak "Expecting a reference" if ! length ref $_[0];
301 # No tempvars - must operate on $_[0], otherwise the pad
302 # will count as an extra ref
303 B::svref_2object($_[0])->REFCNT;
306 sub visit_namespaces {
307 my $args = { (ref $_[0]) ? %{$_[0]} : @_ };
309 my $visited_count = 1;
311 # A package and a namespace are subtly different things
312 $args->{package} ||= 'main';
313 $args->{package} = 'main' if $args->{package} =~ /^ :: (?: main )? $/x;
314 $args->{package} =~ s/^:://;
316 if ( $args->{action}->($args->{package}) ) {
318 ( ($args->{package} eq 'main') ? '' : $args->{package} )
323 $visited_count += visit_namespaces( %$args, package => $_ ) for
325 # this happens sometimes on %:: traversal
328 { $_ =~ /^(.+?)::$/ ? "$ns$1" : () }
329 do { no strict 'refs'; keys %$ns }
336 # FIXME In another life switch these to a polyfill like the ones in namespace::clean
337 sub get_subname ($) {
338 my $gv = B::svref_2object( $_[0] )->GV;
340 ? ( $gv->STASH->NAME, $gv->NAME )
341 : ( join '::', $gv->STASH->NAME, $gv->NAME )
344 sub set_subname ($$) {
347 splice @_, 0, 1, caller(0) . "::$_[0]"
354 local $Storable::canonical = 1;
359 my( %seen, $seen_undef, $numeric_preserving_copy );
362 ? $seen{ $numeric_preserving_copy = $_ }++
369 local $Data::Dumper::Indent = 1
370 unless defined $Data::Dumper::Indent;
376 require Data::Dumper;
377 my $d = Data::Dumper->new([])
390 $d->Sparseseen(1) if modver_gt_or_eq (
391 'Data::Dumper', '2.136'
396 )->Values([$_[0]])->Dump;
398 $dd_obj->Reset->Values([]);
403 my $seen_loud_screams;
405 my $args = { ref $_[0] eq 'HASH' ? %{$_[0]} : @_ };
407 unless ( defined $args->{msg} and length $args->{msg} ) {
409 msg => "No 'msg' value supplied to emit_loud_diag()"
414 my $msg = "\n$0: $args->{msg}";
416 # when we die - we usually want to keep doing it
417 $args->{emit_dups} = !!$args->{confess}
418 unless exists $args->{emit_dups};
420 local $Carp::CarpLevel =
421 ( $args->{skip_frames} || 0 )
429 my $longmess = Carp::longmess();
431 # different object references will thwart deduplication without this
432 ( my $key = "${msg}\n${longmess}" ) =~ s/\b0x[0-9a-f]+\b/0x.../gi;
434 return $seen_loud_screams->{$key} if
435 $seen_loud_screams->{$key}++
441 unless $msg =~ /\n\z/;
443 print STDERR "$msg\n"
445 print STDOUT "\n!!!STDERR ISN'T WRITABLE!!!:$msg\n";
447 return $seen_loud_screams->{$key}
448 unless $args->{confess};
450 # increment *again*, because... Carp.
453 # not $msg - Carp will reapply the longmess on its own
454 Carp::confess($args->{msg});
459 ### This is *NOT* boolean.pm - deliberately not using a singleton
462 package # hide from pause
463 DBIx::Class::_Util::_Bool;
465 bool => sub { ${$_[0]} },
469 sub true () { my $x = 1; bless \$x, "DBIx::Class::_Util::_Bool" }
470 sub false () { my $x = 0; bless \$x, "DBIx::Class::_Util::_Bool" }
472 sub scope_guard (&) {
473 croak 'Calling scope_guard() in void context makes no sense'
474 if ! defined wantarray;
476 # no direct blessing of coderefs - DESTROY is buggy on those
477 bless [ $_[0] ], 'DBIx::Class::_Util::ScopeGuard';
481 DBIx::Class::_Util::ScopeGuard;
484 &DBIx::Class::_Util::detected_reinvoked_destructor;
486 local $@ if DBIx::Class::_ENV_::UNSTABLE_DOLLARAT;
493 DBIx::Class::_Util::emit_loud_diag(
495 msg => "Execution of scope guard $_[0] resulted in the non-trappable exception:\n\n$@\n "
501 sub is_exception ($) {
505 # this is not strictly correct - an eval setting $@ to undef
506 # is *not* the same as an eval setting $@ to ''
507 # but for the sake of simplicity assume the following for
509 return 0 unless defined $e;
511 my ($not_blank, $suberror);
513 local $SIG{__DIE__} if $SIG{__DIE__};
516 # The ne() here is deliberate - a plain length($e), or worse "$e" ne
517 # will entirely obviate the need for the encolsing eval{}, as the
518 # condition we guard against is a missing fallback overload
519 $not_blank = ( $e ne '' );
524 if (defined $suberror) {
525 if (length (my $class = blessed($e) )) {
526 carp_unique( sprintf(
527 'External exception class %s implements partial (broken) overloading '
528 . 'preventing its instances from being used in simple ($x eq $y) '
529 . 'comparisons. Given Perl\'s "globally cooperative" exception '
530 . 'handling this type of brokenness is extremely dangerous on '
531 . 'exception objects, as it may (and often does) result in silent '
532 . '"exception substitution". DBIx::Class tries to work around this '
533 . 'as much as possible, but other parts of your software stack may '
534 . 'not be even aware of this. Please submit a bugreport against the '
535 . 'distribution containing %s and in the meantime apply a fix similar '
536 . 'to the one shown at %s, in order to ensure your exception handling '
537 . 'is saner application-wide. What follows is the actual error text '
538 . "as generated by Perl itself:\n\n%s\n ",
541 'http://v.gd/DBIC_overload_tempfix/',
545 # workaround, keeps spice flowing
546 $not_blank = !!( length $e );
549 # not blessed yet failed the 'ne'... this makes 0 sense...
555 # a ref evaluating to '' is definitively a "null object"
558 length( my $class = ref $e )
561 "Objects of external exception class '$class' stringify to '' (the "
562 . 'empty string), implementing the so called null-object-pattern. '
563 . 'Given Perl\'s "globally cooperative" exception handling using this '
564 . 'class of exceptions is extremely dangerous, as it may (and often '
565 . 'does) result in silent discarding of errors. DBIx::Class tries to '
566 . 'work around this as much as possible, but other parts of your '
567 . 'software stack may not be even aware of the problem. Please submit '
568 . "a bugreport against the distribution containing '$class'",
580 # Recreate the logic of try(), while reusing the catch()/finally() as-is
582 # FIXME: We need to move away from Try::Tiny entirely (way too heavy and
583 # yes, shows up ON TOP of profiles) but this is a batle for another maint
584 sub dbic_internal_try (&;@) {
586 my $try_cref = shift;
587 my $catch_cref = undef; # apparently this is a thing... https://rt.perl.org/Public/Bug/Display.html?id=119311
591 if( ref($arg) eq 'Try::Tiny::Catch' ) {
593 croak 'dbic_internal_try() may not be followed by multiple catch() blocks'
598 elsif ( ref($arg) eq 'Try::Tiny::Finally' ) {
599 croak 'dbic_internal_try() does not support finally{}';
603 'dbic_internal_try() encountered an unexpected argument '
604 . "'@{[ defined $arg ? $arg : 'UNDEF' ]}' - perhaps "
605 . 'a missing semi-colon before or ' # trailing space important
610 my $wantarray = wantarray;
611 my $preexisting_exception = $@;
614 my $all_good = eval {
615 $@ = $preexisting_exception;
617 local $callstack_state->{in_internal_try} = 1
618 unless $callstack_state->{in_internal_try};
620 # always unset - someone may have snuck it in
621 local $SIG{__DIE__} if $SIG{__DIE__};
624 @ret = $try_cref->();
626 elsif( defined $wantarray ) {
627 $ret[0] = $try_cref->();
637 $@ = $preexisting_exception;
640 return $wantarray ? @ret : $ret[0]
642 elsif ( $catch_cref ) {
644 return $catch_cref->($exception);
651 sub in_internal_try { !! $callstack_state->{in_internal_try} }
655 my $destruction_registry = {};
657 sub DBIx::Class::__Util_iThreads_handler__::CLONE {
658 %$destruction_registry = map {
660 ? ( refaddr($_) => $_ )
662 } values %$destruction_registry;
664 weaken($_) for values %$destruction_registry;
666 # Dummy NEXTSTATE ensuring the all temporaries on the stack are garbage
667 # collected before leaving this scope. Depending on the code above, this
668 # may very well be just a preventive measure guarding future modifications
672 # This is almost invariably invoked from within DESTROY
673 # throwing exceptions won't work
674 sub detected_reinvoked_destructor {
676 # quick "garbage collection" pass - prevents the registry
677 # from slowly growing with a bunch of undef-valued keys
678 defined $destruction_registry->{$_} or delete $destruction_registry->{$_}
679 for keys %$destruction_registry;
681 if (! length ref $_[0]) {
684 msg => (caller(0))[3] . '() expects a blessed reference'
686 return undef; # don't know wtf to do
688 elsif (! defined $destruction_registry->{ my $addr = refaddr($_[0]) } ) {
689 weaken( $destruction_registry->{$addr} = $_[0] );
693 emit_loud_diag( msg => sprintf (
694 'Preventing *MULTIPLE* DESTROY() invocations on %s - an *EXTREMELY '
695 . 'DANGEROUS* condition which is *ALMOST CERTAINLY GLOBAL* within your '
696 . 'application, affecting *ALL* classes without active protection against '
697 . 'this. Diagnose and fix the root cause ASAP!!!%s',
699 ( ( $INC{'Devel/StackTrace.pm'} and ! do { local $@; eval { Devel::StackTrace->VERSION(2) } } )
700 ? " (likely culprit Devel::StackTrace\@@{[ Devel::StackTrace->VERSION ]} found in %INC, http://is.gd/D_ST_refcap)"
710 my $module_name_rx = qr/ \A [A-Z_a-z] [0-9A-Z_a-z]* (?: :: [0-9A-Z_a-z]+ )* \z /x;
711 my $ver_rx = qr/ \A [0-9]+ (?: \. [0-9]+ )* (?: \_ [0-9]+ )* \z /x;
713 sub modver_gt_or_eq ($$) {
714 my ($mod, $ver) = @_;
716 croak "Nonsensical module name supplied"
717 if ! defined $mod or $mod !~ $module_name_rx;
719 croak "Nonsensical minimum version supplied"
720 if ! defined $ver or $ver !~ $ver_rx;
723 my $ver_cache = ${"${mod}::__DBIC_MODULE_VERSION_CHECKS__"} ||= ( $mod->VERSION
725 : croak "$mod does not seem to provide a version (perhaps it never loaded)"
728 ! defined $ver_cache->{$ver}
730 $ver_cache->{$ver} = do {
732 local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ )
733 if SPURIOUS_VERSION_CHECK_WARNINGS;
735 local $SIG{__DIE__} if $SIG{__DIE__};
737 eval { $mod->VERSION($ver) } ? 1 : 0;
743 sub modver_gt_or_eq_and_lt ($$$) {
744 my ($mod, $v_ge, $v_lt) = @_;
746 croak "Nonsensical maximum version supplied"
747 if ! defined $v_lt or $v_lt !~ $ver_rx;
750 modver_gt_or_eq($mod, $v_ge)
752 ! modver_gt_or_eq($mod, $v_lt)
758 sub describe_class_methods {
760 ref $_[0] eq 'HASH' ? $_[0]
761 : ( @_ == 1 and ! length ref $_[0] ) ? { class => $_[0] }
765 my ($class, $requested_mro) = @{$args}{qw( class use_mro )};
767 croak "Expecting a class name either as the sole argument or a 'class' option"
768 if not defined $class or $class !~ $module_name_rx;
771 "The supplied 'class' argument is tainted: this is *extremely* "
772 . 'dangerous, fix your code ASAP!!! ( for more details read through '
773 . 'https://is.gd/perl_mro_taint_wtf )'
775 DBIx::Class::_ENV_::TAINT_MODE
777 Scalar::Util::tainted($class)
780 $requested_mro ||= mro::get_mro($class);
782 # mro::set_mro() does not bump pkg_gen - WHAT THE FUCK?!
783 my $query_cache_key = "$class|$requested_mro";
785 my $internal_cache_key =
786 ( mro::get_mro($class) eq $requested_mro )
791 # use a cache on old MRO, since while we are recursing in this function
792 # nothing can possibly change (the speedup is immense)
793 # (yes, people could be tie()ing the stash and adding methods on access
794 # but there is a limit to how much crazy can be supported here)
796 # we use the cache for linear_isa lookups on new MRO as well - it adds
797 # a *tiny* speedup, and simplifies the code a lot
799 local $__describe_class_query_cache->{'!internal!'} = {}
800 unless $__describe_class_query_cache->{'!internal!'};
804 $my_gen += get_real_pkg_gen($_) for ( my @full_ISA = (
807 $__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa}
809 mro::get_linear_isa($class, $requested_mro)
813 $__describe_class_query_cache->{'!internal!'}{$class}{is_universal}
815 mro::is_universal($class)
817 $__describe_class_query_cache->{'!internal!'}{UNIVERSAL}{linear_isa}
819 mro::get_linear_isa("UNIVERSAL")
824 my $slot = $__describe_class_query_cache->{$query_cache_key} ||= {};
826 unless ( ($slot->{cumulative_gen}||0) == $my_gen ) {
831 isa => { map { $_ => 1 } @full_ISA },
833 @{ $__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa} }
834 [ 1 .. $#{$__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa}} ]
837 type => $requested_mro,
838 is_c3 => ( ($requested_mro eq 'c3') ? 1 : 0 ),
840 cumulative_gen => $my_gen,
843 # remove ourselves from ISA
846 # ensure the cache is populated for the parents, code below can then
847 # efficiently operate over the query_cache directly
848 describe_class_methods($_) for reverse @full_ISA;
852 # combine full ISA-order inherited and local method list into a
856 unshift @{ $slot->{methods}{$_->{name}} }, $_
861 $_->{via_class} ne $class
863 $slot->{methods_defined_in_class}{$_->{name}} = $_
868 @{ $slot->{methods}{$_->{name}} } > 1
872 $slot->{methods_with_supers}{$_->{name}} = $slot->{methods}{$_->{name}}
876 # what describe_class_methods for @full_ISA produced above
878 $__describe_class_query_cache->{$_}{methods_defined_in_class} || {}
879 } } map { "$_|" . mro::get_mro($_) } reverse @full_ISA ),
881 # our own non-cleaned subs + their attributes
884 # need to account for dummy helper crefs under OLD_MRO
886 ! DBIx::Class::_ENV_::OLD_MRO
888 ! ( ( $Class::C3::MRO{$class} || {} )->{methods}{$_} )
891 # these 2 OR-ed checks are sufficient for 5.10+
893 ref(\ "${class}::"->{$_} ) ne 'GLOB'
895 defined( *{ "${class}::"->{$_} }{CODE} )
900 attributes => { map { $_ => 1 } do {
903 local $SIG{__DIE__} if $SIG{__DIE__};
904 # attributes::get may throw on blessed-false crefs :/
905 eval { @attrs = attributes::get( \&{"${class}::${_}"} ); 1 }
906 or warn "Unable to determine attributes of the \\&${class}::$_ method due to following error: $@";
911 } keys %{"${class}::"} )
915 # recalculate the pkg_gen on newer perls under Taint mode,
916 # because of shit like:
917 # perl -T -Mmro -e 'package Foo; sub bar {}; defined( *{ "Foo::"->{bar}}{CODE} ) and warn mro::get_pkg_gen("Foo") for (1,2,3)'
920 ! DBIx::Class::_ENV_::OLD_MRO
922 DBIx::Class::_ENV_::TAINT_MODE
925 $slot->{cumulative_gen} = 0;
926 $slot->{cumulative_gen} += get_real_pkg_gen($_)
927 for $class, @full_ISA;
938 # Why not just use some higher-level module or at least File::Spec here?
940 # 1) This is a *very* rarely used function, and the deptree is large
941 # enough already as it is
943 # 2) (more importantly) Our tooling is utter shit in this area. There
944 # is no comprehensive support for UNC paths in PathTools and there
945 # are also various small bugs in representation across different
946 # path-manipulation CPAN offerings.
948 # Since this routine is strictly used for logical path processing (it
949 # *must* be able to work with not-yet-existing paths), use this seemingly
950 # simple but I *think* complete implementation to feed to other consumers
952 # If bugs are ever uncovered in this routine, *YOU ARE URGED TO RESIST*
953 # the impulse to bring in an external dependency. During runtime there
954 # is exactly one spot that could potentially maybe once in a blue moon
955 # use this function. Keep it lean.
958 ( $_[0] =~ m{ [\/\\] ( \.{0,2} ) ( [\/\\]* ) \z }x )
962 ( ( length($1) and ! length($2) ) ? '/' : '' )
969 File::Spec->catpath (
970 ( File::Spec->splitpath( "$_[0]" ) )[0,1],
979 # do not ask for a recent version, use 1.x API calls
980 File::Path::mkpath([ "$_[0]" ]); # File::Path does not like objects
985 my $list_ctx_ok_stack_marker;
987 sub fail_on_internal_wantarray () {
988 return if $list_ctx_ok_stack_marker;
990 if (! defined wantarray) {
991 croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard');
995 while ( ( (CORE::caller($cf+1))[3] || '' ) =~ / :: (?:
997 # these are public API parts that alter behavior on wantarray
998 search | search_related | slice | search_literal
1002 # these are explicitly prefixed, since we only recognize them as valid
1003 # escapes when they come from the guts of CDBICompat
1004 CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all )
1010 my ($fr, $want, $argdesc);
1013 $fr = [ CORE::caller($cf) ];
1014 $want = ( CORE::caller($cf-1) )[5];
1015 $argdesc = ref $DB::args[0]
1016 ? DBIx::Class::_Util::refdesc($DB::args[0])
1022 $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
1024 DBIx::Class::Exception->throw( sprintf (
1025 "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts",
1026 $argdesc, @{$fr}[1,2]
1027 ), 'with_stacktrace');
1030 weaken( $list_ctx_ok_stack_marker = my $mark = [] );
1036 sub fail_on_internal_call {
1040 $fr = [ CORE::caller(1) ];
1041 $argdesc = ref $DB::args[0]
1042 ? DBIx::Class::_Util::refdesc($DB::args[0])
1043 : ( $DB::args[0] . '' )
1048 # need to make allowance for a proxy-yet-direct call
1050 $fr->[0] eq 'DBIx::Class::ResultSourceProxy'
1052 @fr2 = (CORE::caller(2))
1055 ( $fr->[3] =~ /([^:])+$/ )[0]
1057 ( $fr2[3] =~ /([^:])+$/ )[0]
1067 $check_fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
1069 $check_fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there
1071 DBIx::Class::Exception->throw( sprintf (
1072 "Illegal internal call of indirect proxy-method %s() with argument '%s': examine the last lines of the proxy method deparse below to determine what to call directly instead at %s on line %d\n\n%s\n\n Stacktrace starts",
1073 $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do {
1076 B::Deparse->new->coderef2text(\&{$fr->[3]})
1078 ), 'with_stacktrace');
1082 if (DBIx::Class::_ENV_::ASSERT_NO_ERRONEOUS_METAINSTANCE_USE) {
1084 no warnings 'redefine';
1086 my $next_bless = defined(&CORE::GLOBAL::bless)
1087 ? \&CORE::GLOBAL::bless
1088 : sub { CORE::bless($_[0], $_[1]) }
1091 *CORE::GLOBAL::bless = sub {
1092 my $class = (@_ > 1) ? $_[1] : CORE::caller();
1094 # allow for reblessing (role application)
1095 return $next_bless->( $_[0], $class )
1096 if defined blessed $_[0];
1098 my $obj = $next_bless->( $_[0], $class );
1100 my $calling_sub = (CORE::caller(1))[3] || '';
1103 # before 5.18 ->isa() will choke on the "0" package
1104 # which we test for in several obscure cases, sigh...
1105 !( DBIx::Class::_ENV_::PERL_VERSION < 5.018 )
1112 $calling_sub !~ /^ (?:
1113 DBIx::Class::Schema::clone
1115 DBIx::Class::DB::setup_schema_instance
1118 $class->isa("DBIx::Class::Schema")
1122 $calling_sub ne 'DBIx::Class::ResultSource::new'
1124 $class->isa("DBIx::Class::ResultSource")
1128 local $Carp::CarpLevel = $Carp::CarpLevel + 1
1130 Carp::confess("Improper instantiation of '$obj': you *MUST* call the corresponding constructor");