1 package # hide from PAUSE
4 # load es early as we can, usually a noop
5 use DBIx::Class::StartupCheck;
10 # For the love of everything that is crab-like: DO NOT reach into this
11 # The entire thing is really fragile and should not be screwed with
12 # unless absolutely and unavoidably necessary
13 our $__describe_class_query_cache;
16 package # hide from pause
29 BROKEN_FORK => (OS_NAME eq 'MSWin32') ? 1 : 0,
31 BROKEN_GOTO => ( PERL_VERSION < 5.008003 ) ? 1 : 0,
33 # perl -MScalar::Util=weaken -e 'weaken( $hash{key} = \"value" )'
34 BROKEN_WEAK_SCALARREF_VALUES => ( PERL_VERSION < 5.008003 ) ? 1 : 0,
36 HAS_ITHREADS => $Config{useithreads} ? 1 : 0,
38 TAINT_MODE => 0 + ${^TAINT}, # tri-state: 0, 1, -1
40 UNSTABLE_DOLLARAT => ( PERL_VERSION < 5.013002 ) ? 1 : 0,
44 # the "DBIC_" prefix below is crucial - this is what makes CI pick up
45 # all envvars without further adjusting its scripts
46 # DO NOT CHANGE to the more logical { $_ => !!( $ENV{"DBIC_$_"} ) }
48 { substr($_, 5) => !!( $ENV{$_} ) }
50 DBIC_SHUFFLE_UNORDERED_RESULTSETS
51 DBIC_ASSERT_NO_INTERNAL_WANTARRAY
52 DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS
53 DBIC_ASSERT_NO_ERRONEOUS_METAINSTANCE_USE
54 DBIC_ASSERT_NO_FAILING_SANITY_CHECKS
55 DBIC_STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE
56 DBIC_STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE
60 IV_SIZE => $Config{ivsize},
63 if ( PERL_VERSION < 5.009_005) {
65 constant->import( OLD_MRO => 1 );
68 # Yes, I know this is a rather PHP-ish name, but please first read
69 # https://metacpan.org/source/BOBTFISH/MRO-Compat-0.12/lib/MRO/Compat.pm#L363-368
71 # Even if we are using Class::C3::XS it still won't work, as doing
72 # defined( *{ "SubClass::"->{$_} }{CODE} )
73 # will set pkg_gen to the same value for SubClass and *ALL PARENTS*
75 *DBIx::Class::_Util::get_real_pkg_gen = sub ($) {
82 # the non-assign-unless-there-is-a-hash is deliberate
83 ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{gen} ||= (
84 Math::BigInt->new( '0x' . ( Digest::MD5::md5_hex( join "\0", map {
86 ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_}{methlist} ||= (
92 # RV to be hashed up and turned into a number
97 # stringification should be sufficient, ignore names/refaddr entirely
102 local $SIG{__DIE__} if $SIG{__DIE__};
103 # attributes::get may throw on blessed-false crefs :/
104 eval { @attrs = attributes::get( $_ ); 1 }
105 or warn "Unable to determine attributes of coderef $_ due to the following error: $@";
111 # skip dummy C::C3 helper crefs
112 ! ( ( $Class::C3::MRO{$cur_class} || {} )->{methods}{$_} )
115 ref(\ "${cur_class}::"->{$_} ) ne 'GLOB'
117 defined( *{ "${cur_class}::"->{$_} }{CODE} )
120 ? ( \&{"${cur_class}::$_"} )
123 keys %{ "${cur_class}::" }
129 ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{linear_isa}
131 mro::get_linear_isa($_[0])
135 ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{is_universal}
137 mro::is_universal($_[0])
139 ( $__describe_class_query_cache->{'!internal!'} || {} )->{UNIVERSAL}{linear_isa}
141 mro::get_linear_isa("UNIVERSAL")
150 constant->import( OLD_MRO => 0 );
151 *DBIx::Class::_Util::get_real_pkg_gen = \&mro::get_pkg_gen;
154 # Both of these are no longer used for anything. However bring
155 # them back after they were purged in 08a8d8f1, as there appear
156 # to be outfits with *COPY PASTED* pieces of lib/DBIx/Class/Storage/*
157 # in their production codebases. There is no point in breaking these
158 # if whatever they used actually continues to work
160 DBIx::Class::_Util::emit_loud_diag(
162 msg => "The @{[ (caller(1))[3] ]} constant is no more - adjust your code"
167 sub DBICTEST () { &$sigh }
168 sub PEEPEENESS () { &$sigh }
171 use constant SPURIOUS_VERSION_CHECK_WARNINGS => ( DBIx::Class::_ENV_::PERL_VERSION < 5.010 ? 1 : 0);
173 # FIXME - this is not supposed to be here
174 # Carp::Skip to the rescue soon
175 use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
177 # Ensure it is always there, in case we need to do a $schema-less throw()
178 use DBIx::Class::Exception ();
182 use Storable 'nfreeze';
183 use Scalar::Util qw(weaken blessed reftype refaddr);
187 # Usually versions are not specified anywhere aside the Makefile.PL
188 # (writing them out in-code is extremely obnoxious)
189 # However without a recent enough Moo the quote_sub override fails
190 # in very puzzling and hard to detect ways: so add a version check
192 use Sub::Quote qw(qsub);
193 BEGIN { Sub::Quote->VERSION('2.002002') }
195 # Already correctly prototyped: perlbrew exec perl -MStorable -e 'warn prototype \&Storable::dclone'
196 BEGIN { *deep_clone = \&Storable::dclone }
200 sigwarn_silencer modver_gt_or_eq modver_gt_or_eq_and_lt
201 fail_on_internal_wantarray fail_on_internal_call
202 refdesc refcount hrefaddr set_subname get_subname describe_class_methods
203 scope_guard detected_reinvoked_destructor emit_loud_diag
205 is_exception dbic_internal_try dbic_internal_catch visit_namespaces
206 quote_sub qsub perlstring serialize deep_clone dump_value uniq
208 UNRESOLVABLE_CONDITION
211 use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
213 # Override forcing no_defer, and adding naming consistency checks
214 our %refs_closed_over_by_quote_sub_installed_crefs;
216 Carp::confess( "Anonymous quoting not supported by the DBIC quote_sub override - supply a sub name" ) if
224 Carp::confess( "The DBIC quote_sub override expects sub name '$_[0]' to be fully qualified" )
225 unless (my $stash) = $_[0] =~ /^(.+)::/;
228 "The DBIC sub_quote override does not support 'no_install'"
236 'The DBIC quote_sub override expects the namespace-part of sub name '
237 . "'$_[0]' to match the supplied package argument '$_[3]->{package}'"
241 defined $_[3]->{package}
243 $stash ne $_[3]->{package}
246 my @caller = caller(0);
248 package => $caller[0],
250 warning_bits => $caller[9],
251 hintshash => $caller[10],
254 # explicitly forced for everything
259 # just use a growing counter, no need to perform neither compaction
260 # nor any special ithread-level handling
261 $refs_closed_over_by_quote_sub_installed_crefs
262 { scalar keys %refs_closed_over_by_quote_sub_installed_crefs }
268 ! DBIx::Class::_ENV_::BROKEN_WEAK_SCALARREF_VALUES
272 } values %{ $_[2] || {} };
274 Sub::Quote::quote_sub( $_[0], $_[1], $_[2]||{}, $sq_opts );
277 sub sigwarn_silencer ($) {
280 croak "Expecting a regexp" if ref $pattern ne 'Regexp';
282 my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) };
284 return sub { &$orig_sig_warn unless $_[0] =~ $pattern };
287 sub perlstring ($) { q{"}. quotemeta( shift ). q{"} };
289 sub hrefaddr ($) { sprintf '0x%x', &refaddr||0 }
292 croak "Expecting a reference" if ! length ref $_[0];
294 # be careful not to trigger stringification,
295 # reuse @_ as a scratch-pad
296 sprintf '%s%s(0x%x)',
297 ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ),
304 croak "Expecting a reference" if ! length ref $_[0];
306 # No tempvars - must operate on $_[0], otherwise the pad
307 # will count as an extra ref
308 B::svref_2object($_[0])->REFCNT;
311 sub visit_namespaces {
312 my $args = { (ref $_[0]) ? %{$_[0]} : @_ };
314 my $visited_count = 1;
316 # A package and a namespace are subtly different things
317 $args->{package} ||= 'main';
318 $args->{package} = 'main' if $args->{package} =~ /^ :: (?: main )? $/x;
319 $args->{package} =~ s/^:://;
321 if ( $args->{action}->($args->{package}) ) {
323 ( ($args->{package} eq 'main') ? '' : $args->{package} )
328 $visited_count += visit_namespaces( %$args, package => $_ ) for
330 # this happens sometimes on %:: traversal
333 { $_ =~ /^(.+?)::$/ ? "$ns$1" : () }
334 do { no strict 'refs'; keys %$ns }
341 # FIXME In another life switch these to a polyfill like the ones in namespace::clean
342 sub get_subname ($) {
343 my $gv = B::svref_2object( $_[0] )->GV;
345 ? ( $gv->STASH->NAME, $gv->NAME )
346 : ( join '::', $gv->STASH->NAME, $gv->NAME )
349 sub set_subname ($$) {
352 splice @_, 0, 1, caller(0) . "::$_[0]"
360 local $Storable::canonical = 1;
362 # explicitly false - there is nothing sensible that can come out of
363 # an attempt at CODE serialization
364 local $Storable::Deparse;
367 local $Storable::forgive_me;
370 # A number of codepaths *expect* this to be Storable.pm-based so that
371 # the STORABLE_freeze hooks in the metadata subtree get executed properly
376 my( %seen, $seen_undef, $numeric_preserving_copy );
379 ? $seen{ $numeric_preserving_copy = $_ }++
386 local $Data::Dumper::Indent = 1
387 unless defined $Data::Dumper::Indent;
393 require Data::Dumper;
394 my $d = Data::Dumper->new([])
407 # FIXME - this is kinda ridiculous - there ought to be a
408 # Data::Dumper->new_with_defaults or somesuch...
410 if( modver_gt_or_eq ( 'Data::Dumper', '2.136' ) ) {
413 if( modver_gt_or_eq ( 'Data::Dumper', '2.153' ) ) {
414 $d->Maxrecurse(1000);
416 if( modver_gt_or_eq ( 'Data::Dumper', '2.160' ) ) {
417 $d->Trailingcomma(1);
424 )->Values([$_[0]])->Dump;
426 $dd_obj->Reset->Values([]);
431 my $seen_loud_screams;
433 my $args = { ref $_[0] eq 'HASH' ? %{$_[0]} : @_ };
435 unless ( defined $args->{msg} and length $args->{msg} ) {
437 msg => "No 'msg' value supplied to emit_loud_diag()"
442 my $msg = "\n" . join( ': ',
443 ( $0 eq '-e' ? () : $0 ),
447 # when we die - we usually want to keep doing it
448 $args->{emit_dups} = !!$args->{confess}
449 unless exists $args->{emit_dups};
451 local $Carp::CarpLevel =
452 ( $args->{skip_frames} || 0 )
460 my $longmess = Carp::longmess();
462 # different object references will thwart deduplication without this
463 ( my $key = "${msg}\n${longmess}" ) =~ s/\b0x[0-9a-f]+\b/0x.../gi;
465 return $seen_loud_screams->{$key} if
466 $seen_loud_screams->{$key}++
472 unless $msg =~ /\n\z/;
474 print STDERR "$msg\n"
476 print STDOUT "\n!!!STDERR ISN'T WRITABLE!!!:$msg\n";
478 return $seen_loud_screams->{$key}
479 unless $args->{confess};
481 # increment *again*, because... Carp.
484 # not $msg - Carp will reapply the longmess on its own
485 Carp::confess($args->{msg});
490 ### This is *NOT* boolean.pm - deliberately not using a singleton
493 package # hide from pause
494 DBIx::Class::_Util::_Bool;
496 bool => sub { ${$_[0]} },
500 sub true () { my $x = 1; bless \$x, "DBIx::Class::_Util::_Bool" }
501 sub false () { my $x = 0; bless \$x, "DBIx::Class::_Util::_Bool" }
503 sub scope_guard (&) {
504 croak 'Calling scope_guard() in void context makes no sense'
505 if ! defined wantarray;
507 # no direct blessing of coderefs - DESTROY is buggy on those
508 bless [ $_[0] ], 'DBIx::Class::_Util::ScopeGuard';
512 DBIx::Class::_Util::ScopeGuard;
515 &DBIx::Class::_Util::detected_reinvoked_destructor;
517 local $@ if DBIx::Class::_ENV_::UNSTABLE_DOLLARAT;
524 DBIx::Class::_Util::emit_loud_diag(
526 msg => "Execution of scope guard $_[0] resulted in the non-trappable exception:\n\n$@\n "
532 sub is_exception ($) {
536 # this is not strictly correct - an eval setting $@ to undef
537 # is *not* the same as an eval setting $@ to ''
538 # but for the sake of simplicity assume the following for
540 return 0 unless defined $e;
542 my ($not_blank, $suberror);
544 local $SIG{__DIE__} if $SIG{__DIE__};
547 # The ne() here is deliberate - a plain length($e), or worse "$e" ne
548 # will entirely obviate the need for the encolsing eval{}, as the
549 # condition we guard against is a missing fallback overload
550 $not_blank = ( $e ne '' );
555 if (defined $suberror) {
556 if (length (my $class = blessed($e) )) {
557 carp_unique( sprintf(
558 'External exception class %s implements partial (broken) overloading '
559 . 'preventing its instances from being used in simple ($x eq $y) '
560 . 'comparisons. Given Perl\'s "globally cooperative" exception '
561 . 'handling this type of brokenness is extremely dangerous on '
562 . 'exception objects, as it may (and often does) result in silent '
563 . '"exception substitution". DBIx::Class tries to work around this '
564 . 'as much as possible, but other parts of your software stack may '
565 . 'not be even aware of this. Please submit a bugreport against the '
566 . 'distribution containing %s and in the meantime apply a fix similar '
567 . 'to the one shown at %s, in order to ensure your exception handling '
568 . 'is saner application-wide. What follows is the actual error text '
569 . "as generated by Perl itself:\n\n%s\n ",
572 'http://v.gd/DBIC_overload_tempfix/',
576 # workaround, keeps spice flowing
577 $not_blank = !!( length $e );
580 # not blessed yet failed the 'ne'... this makes 0 sense...
586 # a ref evaluating to '' is definitively a "null object"
589 length( my $class = ref $e )
592 "Objects of external exception class '$class' stringify to '' (the "
593 . 'empty string), implementing the so called null-object-pattern. '
594 . 'Given Perl\'s "globally cooperative" exception handling using this '
595 . 'class of exceptions is extremely dangerous, as it may (and often '
596 . 'does) result in silent discarding of errors. DBIx::Class tries to '
597 . 'work around this as much as possible, but other parts of your '
598 . 'software stack may not be even aware of the problem. Please submit '
599 . "a bugreport against the distribution containing '$class'",
611 # Recreate the logic of Try::Tiny, but without the crazy Sub::Name
612 # invocations and without support for finally() altogether
613 # ( yes, these days Try::Tiny is so "tiny" it shows *ON TOP* of most
614 # random profiles https://youtu.be/PYCbumw0Fis?t=1919 )
615 sub dbic_internal_try (&;@) {
617 my $try_cref = shift;
618 my $catch_cref = undef; # apparently this is a thing... https://rt.perl.org/Public/Bug/Display.html?id=119311
622 croak 'dbic_internal_try() may not be followed by multiple dbic_internal_catch() blocks'
625 ($catch_cref = $$arg), next
626 if ref($arg) eq 'DBIx::Class::_Util::Catch';
628 croak( 'Mixing dbic_internal_try() with Try::Tiny::catch() is not supported' )
629 if ref($arg) eq 'Try::Tiny::Catch';
631 croak( 'dbic_internal_try() does not support finally{}' )
632 if ref($arg) eq 'Try::Tiny::Finally';
635 'dbic_internal_try() encountered an unexpected argument '
636 . "'@{[ defined $arg ? $arg : 'UNDEF' ]}' - perhaps "
637 . 'a missing semi-colon before or ' # trailing space important
641 my $wantarray = wantarray;
642 my $preexisting_exception = $@;
645 my $saul_goodman = eval {
646 $@ = $preexisting_exception;
648 local $callstack_state->{in_internal_try} = 1
649 unless $callstack_state->{in_internal_try};
651 # always unset - someone may have snuck it in
652 local $SIG{__DIE__} if $SIG{__DIE__};
655 @ret = $try_cref->();
657 elsif( defined $wantarray ) {
658 $ret[0] = $try_cref->();
668 $@ = $preexisting_exception;
670 if ( $saul_goodman ) {
671 return $wantarray ? @ret : $ret[0]
673 elsif ( $catch_cref ) {
675 return $catch_cref->($exception);
682 sub dbic_internal_catch (&;@) {
684 croak( 'Useless use of bare dbic_internal_catch()' )
687 croak( 'dbic_internal_catch() must receive exactly one argument at end of expression' )
692 'DBIx::Class::_Util::Catch'
696 sub in_internal_try () {
697 !! $callstack_state->{in_internal_try}
702 my $destruction_registry = {};
704 sub DBIx::Class::__Util_iThreads_handler__::CLONE {
705 %$destruction_registry = map {
707 ? ( refaddr($_) => $_ )
709 } values %$destruction_registry;
711 weaken($_) for values %$destruction_registry;
713 # Dummy NEXTSTATE ensuring the all temporaries on the stack are garbage
714 # collected before leaving this scope. Depending on the code above, this
715 # may very well be just a preventive measure guarding future modifications
719 # This is almost invariably invoked from within DESTROY
720 # throwing exceptions won't work
721 sub detected_reinvoked_destructor {
723 # quick "garbage collection" pass - prevents the registry
724 # from slowly growing with a bunch of undef-valued keys
725 defined $destruction_registry->{$_} or delete $destruction_registry->{$_}
726 for keys %$destruction_registry;
728 if (! length ref $_[0]) {
731 msg => (caller(0))[3] . '() expects a blessed reference'
733 return undef; # don't know wtf to do
735 elsif (! defined $destruction_registry->{ my $addr = refaddr($_[0]) } ) {
736 weaken( $destruction_registry->{$addr} = $_[0] );
740 emit_loud_diag( msg => sprintf (
741 'Preventing *MULTIPLE* DESTROY() invocations on %s - an *EXTREMELY '
742 . 'DANGEROUS* condition which is *ALMOST CERTAINLY GLOBAL* within your '
743 . 'application, affecting *ALL* classes without active protection against '
744 . 'this. Diagnose and fix the root cause ASAP!!!%s',
746 ( ( $INC{'Devel/StackTrace.pm'} and ! do { local $@; eval { Devel::StackTrace->VERSION(2) } } )
747 ? " (likely culprit Devel::StackTrace\@@{[ Devel::StackTrace->VERSION ]} found in %INC, http://is.gd/D_ST_refcap)"
757 my $module_name_rx = qr/ \A [A-Z_a-z] [0-9A-Z_a-z]* (?: :: [0-9A-Z_a-z]+ )* \z /x;
758 my $ver_rx = qr/ \A [0-9]+ (?: \. [0-9]+ )* (?: \_ [0-9]+ )* \z /x;
760 sub modver_gt_or_eq ($$) {
761 my ($mod, $ver) = @_;
763 croak "Nonsensical module name supplied"
764 if ! defined $mod or $mod !~ $module_name_rx;
766 croak "Nonsensical minimum version supplied"
767 if ! defined $ver or $ver !~ $ver_rx;
771 ${"${mod}::__DBIC_MODULE_VERSION_CHECKS__"} ||= {}
774 ! defined $ver_cache->{$ver}
776 $ver_cache->{$ver} = do {
778 local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ )
779 if SPURIOUS_VERSION_CHECK_WARNINGS;
781 # prevent captures by potential __WARN__ hooks or the like:
782 # there is nothing of value that can be happening here, and
783 # leaving a hook in-place can only serve to fail some test
784 local $SIG{__WARN__} if (
785 ! SPURIOUS_VERSION_CHECK_WARNINGS
790 croak "$mod does not seem to provide a version (perhaps it never loaded)"
791 unless $mod->VERSION;
793 local $SIG{__DIE__} if $SIG{__DIE__};
795 eval { $mod->VERSION($ver) } ? 1 : 0;
801 sub modver_gt_or_eq_and_lt ($$$) {
802 my ($mod, $v_ge, $v_lt) = @_;
804 croak "Nonsensical maximum version supplied"
805 if ! defined $v_lt or $v_lt !~ $ver_rx;
808 modver_gt_or_eq($mod, $v_ge)
810 ! modver_gt_or_eq($mod, $v_lt)
816 sub describe_class_methods {
818 ref $_[0] eq 'HASH' ? $_[0]
819 : ( @_ == 1 and ! length ref $_[0] ) ? { class => $_[0] }
823 my ($class, $requested_mro) = @{$args}{qw( class use_mro )};
825 croak "Expecting a class name either as the sole argument or a 'class' option"
826 if not defined $class or $class !~ $module_name_rx;
829 "The supplied 'class' argument is tainted: this is *extremely* "
830 . 'dangerous, fix your code ASAP!!! ( for more details read through '
831 . 'https://is.gd/perl_mro_taint_wtf )'
833 DBIx::Class::_ENV_::TAINT_MODE
835 Scalar::Util::tainted($class)
838 $requested_mro ||= mro::get_mro($class);
840 # mro::set_mro() does not bump pkg_gen - WHAT THE FUCK?!
841 my $query_cache_key = "$class|$requested_mro";
843 my $internal_cache_key =
844 ( mro::get_mro($class) eq $requested_mro )
849 # use a cache on old MRO, since while we are recursing in this function
850 # nothing can possibly change (the speedup is immense)
851 # (yes, people could be tie()ing the stash and adding methods on access
852 # but there is a limit to how much crazy can be supported here)
854 # we use the cache for linear_isa lookups on new MRO as well - it adds
855 # a *tiny* speedup, and simplifies the code a lot
857 local $__describe_class_query_cache->{'!internal!'} = {}
858 unless $__describe_class_query_cache->{'!internal!'};
862 $my_gen += get_real_pkg_gen($_) for ( my @full_ISA = (
865 $__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa}
867 mro::get_linear_isa($class, $requested_mro)
871 $__describe_class_query_cache->{'!internal!'}{$class}{is_universal}
873 mro::is_universal($class)
875 $__describe_class_query_cache->{'!internal!'}{UNIVERSAL}{linear_isa}
877 mro::get_linear_isa("UNIVERSAL")
882 my $slot = $__describe_class_query_cache->{$query_cache_key} ||= {};
884 unless ( ($slot->{cumulative_gen}||0) == $my_gen ) {
889 isa => { map { $_ => 1 } @full_ISA },
891 @{ $__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa} }
892 [ 1 .. $#{$__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa}} ]
895 type => $requested_mro,
896 is_c3 => ( ($requested_mro eq 'c3') ? 1 : 0 ),
898 cumulative_gen => $my_gen,
901 # remove ourselves from ISA
904 # ensure the cache is populated for the parents, code below can then
905 # efficiently operate over the query_cache directly
906 describe_class_methods($_) for reverse @full_ISA;
910 # combine full ISA-order inherited and local method list into a
914 unshift @{ $slot->{methods}{$_->{name}} }, $_
919 $_->{via_class} ne $class
921 $slot->{methods_defined_in_class}{$_->{name}} = $_
926 @{ $slot->{methods}{$_->{name}} } > 1
930 $slot->{methods_with_supers}{$_->{name}} = $slot->{methods}{$_->{name}}
934 # what describe_class_methods for @full_ISA produced above
936 $__describe_class_query_cache->{$_}{methods_defined_in_class} || {}
937 } } map { "$_|" . mro::get_mro($_) } reverse @full_ISA ),
939 # our own non-cleaned subs + their attributes
942 # need to account for dummy helper crefs under OLD_MRO
944 ! DBIx::Class::_ENV_::OLD_MRO
946 ! ( ( $Class::C3::MRO{$class} || {} )->{methods}{$_} )
949 # these 2 OR-ed checks are sufficient for 5.10+
951 ref(\ "${class}::"->{$_} ) ne 'GLOB'
953 defined( *{ "${class}::"->{$_} }{CODE} )
958 attributes => { map { $_ => 1 } do {
961 local $SIG{__DIE__} if $SIG{__DIE__};
962 # attributes::get may throw on blessed-false crefs :/
963 eval { @attrs = attributes::get( \&{"${class}::${_}"} ); 1 }
964 or warn "Unable to determine attributes of the \\&${class}::$_ method due to following error: $@";
969 } keys %{"${class}::"} )
973 # recalculate the pkg_gen on newer perls under Taint mode,
974 # because of shit like:
975 # perl -T -Mmro -e 'package Foo; sub bar {}; defined( *{ "Foo::"->{bar}}{CODE} ) and warn mro::get_pkg_gen("Foo") for (1,2,3)'
978 ! DBIx::Class::_ENV_::OLD_MRO
980 DBIx::Class::_ENV_::TAINT_MODE
983 $slot->{cumulative_gen} = 0;
984 $slot->{cumulative_gen} += get_real_pkg_gen($_)
985 for $class, @full_ISA;
996 # Why not just use some higher-level module or at least File::Spec here?
998 # 1) This is a *very* rarely used function, and the deptree is large
999 # enough already as it is
1001 # 2) (more importantly) Our tooling is utter shit in this area. There
1002 # is no comprehensive support for UNC paths in PathTools and there
1003 # are also various small bugs in representation across different
1004 # path-manipulation CPAN offerings.
1006 # Since this routine is strictly used for logical path processing (it
1007 # *must* be able to work with not-yet-existing paths), use this seemingly
1008 # simple but I *think* complete implementation to feed to other consumers
1010 # If bugs are ever uncovered in this routine, *YOU ARE URGED TO RESIST*
1011 # the impulse to bring in an external dependency. During runtime there
1012 # is exactly one spot that could potentially maybe once in a blue moon
1013 # use this function. Keep it lean.
1015 sub parent_dir ($) {
1016 ( $_[0] =~ m{ [\/\\] ( \.{0,2} ) ( [\/\\]* ) \z }x )
1020 ( ( length($1) and ! length($2) ) ? '/' : '' )
1027 File::Spec->catpath (
1028 ( File::Spec->splitpath( "$_[0]" ) )[0,1],
1037 # do not ask for a recent version, use 1.x API calls
1038 File::Path::mkpath([ "$_[0]" ]); # File::Path does not like objects
1043 my $list_ctx_ok_stack_marker;
1045 sub fail_on_internal_wantarray () {
1046 return if $list_ctx_ok_stack_marker;
1048 if (! defined wantarray) {
1049 croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard');
1053 while ( ( (CORE::caller($cf+1))[3] || '' ) =~ / :: (?:
1055 # these are public API parts that alter behavior on wantarray
1056 search | search_related | slice | search_literal
1060 # these are explicitly prefixed, since we only recognize them as valid
1061 # escapes when they come from the guts of CDBICompat
1062 CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all )
1068 my ($fr, $want, $argdesc);
1071 $fr = [ CORE::caller($cf) ];
1072 $want = ( CORE::caller($cf-1) )[5];
1073 $argdesc = ref $DB::args[0]
1074 ? DBIx::Class::_Util::refdesc($DB::args[0])
1080 $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
1082 DBIx::Class::Exception->throw( sprintf (
1083 "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts",
1084 $argdesc, @{$fr}[1,2]
1085 ), 'with_stacktrace');
1088 weaken( $list_ctx_ok_stack_marker = my $mark = [] );
1094 sub fail_on_internal_call {
1098 $fr = [ CORE::caller(1) ];
1100 ( not defined $DB::args[0] ) ? 'UNAVAILABLE'
1101 : ( length ref $DB::args[0] ) ? DBIx::Class::_Util::refdesc($DB::args[0])
1107 # need to make allowance for a proxy-yet-direct call
1109 $fr->[0] eq 'DBIx::Class::ResultSourceProxy'
1111 @fr2 = (CORE::caller(2))
1114 ( $fr->[3] =~ /([^:])+$/ )[0]
1116 ( $fr2[3] =~ /([^:])+$/ )[0]
1124 die "\nMethod $fr->[3] is not marked with the 'DBIC_method_is_indirect_sugar' attribute\n\n" unless (
1126 # unlikely but who knows...
1131 # This is a weird-ass double-purpose method, only one branch of which is marked
1132 # as an illegal indirect call
1133 # Hence the 'indirect' attribute makes no sense
1134 # FIXME - likely need to mark this in some other manner
1135 $fr->[3] eq 'DBIx::Class::ResultSet::new'
1139 # RsrcProxy stuff is special and not attr-annotated on purpose
1140 # Yet it is marked (correctly) as fail_on_internal_call(), as DBIC
1141 # itself should not call these methods as first-entry
1142 $fr->[3] =~ /^DBIx::Class::ResultSourceProxy::[^:]+$/
1146 # FIXME - there is likely a more fine-graned way to escape "foreign"
1147 # callers, based on annotations... (albeit a slower one)
1148 # For the time being just skip in a dumb way
1149 $fr->[3] !~ /^DBIx::Class|^DBICx::|^DBICTest::/
1154 { $_ eq 'DBIC_method_is_indirect_sugar' }
1155 do { no strict 'refs'; attributes::get( \&{ $fr->[3] }) }
1162 $check_fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
1164 $check_fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there
1166 DBIx::Class::Exception->throw( sprintf (
1167 "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",
1168 $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do {
1171 B::Deparse->new->coderef2text(\&{$fr->[3]})
1173 ), 'with_stacktrace');
1177 if (DBIx::Class::_ENV_::ASSERT_NO_ERRONEOUS_METAINSTANCE_USE) {
1179 no warnings 'redefine';
1181 my $next_bless = defined(&CORE::GLOBAL::bless)
1182 ? \&CORE::GLOBAL::bless
1183 : sub { CORE::bless($_[0], $_[1]) }
1186 *CORE::GLOBAL::bless = sub {
1187 my $class = (@_ > 1) ? $_[1] : CORE::caller();
1189 # allow for reblessing (role application)
1190 return $next_bless->( $_[0], $class )
1191 if defined blessed $_[0];
1193 my $obj = $next_bless->( $_[0], $class );
1195 my $calling_sub = (CORE::caller(1))[3] || '';
1198 # before 5.18 ->isa() will choke on the "0" package
1199 # which we test for in several obscure cases, sigh...
1200 !( DBIx::Class::_ENV_::PERL_VERSION < 5.018 )
1207 $calling_sub !~ /^ (?:
1208 DBIx::Class::Schema::clone
1210 DBIx::Class::DB::setup_schema_instance
1213 $class->isa("DBIx::Class::Schema")
1217 $calling_sub ne 'DBIx::Class::ResultSource::new'
1219 $class->isa("DBIx::Class::ResultSource")
1223 local $Carp::CarpLevel = $Carp::CarpLevel + 1
1225 Carp::confess("Improper instantiation of '$obj': you *MUST* call the corresponding constructor");