1 package # hide from PAUSE
4 use DBIx::Class::StartupCheck; # load es early as we can, usually a noop
9 use constant SPURIOUS_VERSION_CHECK_WARNINGS => ( "$]" < 5.010 ? 1 : 0);
11 my $mro_recursor_stack;
14 package # hide from pause
22 BROKEN_FORK => ($^O eq 'MSWin32') ? 1 : 0,
24 BROKEN_GOTO => ( "$]" < 5.008003 ) ? 1 : 0,
26 # perl -MScalar::Util=weaken -e 'weaken( $hash{key} = \"value" )'
27 BROKEN_WEAK_SCALARREF_VALUES => ( "$]" < 5.008003 ) ? 1 : 0,
29 HAS_ITHREADS => $Config{useithreads} ? 1 : 0,
31 UNSTABLE_DOLLARAT => ( "$]" < 5.013002 ) ? 1 : 0,
35 # the "DBIC_" prefix below is crucial - this is what makes CI pick up
36 # all envvars without further adjusting its scripts
37 # DO NOT CHANGE to the more logical { $_ => !!( $ENV{"DBIC_$_"} ) }
39 { substr($_, 5) => !!( $ENV{$_} ) }
41 DBIC_SHUFFLE_UNORDERED_RESULTSETS
42 DBIC_ASSERT_NO_INTERNAL_WANTARRAY
43 DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS
44 DBIC_STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE
45 DBIC_STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE
49 IV_SIZE => $Config{ivsize},
54 if ( "$]" < 5.009_005) {
56 constant->import( OLD_MRO => 1 );
59 # Yes, I know this is a rather PHP-ish name, but please first read
60 # https://metacpan.org/source/BOBTFISH/MRO-Compat-0.12/lib/MRO/Compat.pm#L363-368
62 # Even if we are using Class::C3::XS it still won't work, as doing
63 # defined( *{ "SubClass::"->{$_} }{CODE} )
64 # will set pkg_gen to the same value for SubClass and *ALL PARENTS*
66 *DBIx::Class::_Util::get_real_pkg_gen = sub ($) {
70 # the non-assign-unless-there-is-a-hash is deliberate
71 ( $mro_recursor_stack->{cache} || {} )->{$_[0]}{gen} ||= (
72 Math::BigInt->new( '0x' . ( Digest::MD5::md5_hex( join "\0", map {
74 ( $mro_recursor_stack->{cache} || {} )->{$_}{methlist} ||= do {
79 # RV to be hashed up and turned into a number
84 # stringification should be sufficient, ignore names/refaddr entirely
86 attributes::get( $_ ),
90 # skip dummy C::C3 helper crefs
91 ! ( ( $Class::C3::MRO{$class} || {} )->{methods}{$_} )
94 ref(\ "${class}::"->{$_} ) ne 'GLOB'
96 defined( *{ "${class}::"->{$_} }{CODE} )
99 ? ( \&{"${class}::$_"} )
102 keys %{ "${class}::" }
108 ( $mro_recursor_stack->{cache} || {} )->{$_[0]}{linear_isa}
110 mro::get_linear_isa($_[0])
114 ( $mro_recursor_stack->{cache} || {} )->{$_[0]}{is_universal}
116 mro::is_universal($_[0])
118 ( $mro_recursor_stack->{cache} || {} )->{UNIVERSAL}{linear_isa}
120 mro::get_linear_isa("UNIVERSAL")
129 constant->import( OLD_MRO => 0 );
130 *DBIx::Class::_Util::get_real_pkg_gen = \&mro::get_pkg_gen;
133 # Both of these are no longer used for anything. However bring
134 # them back after they were purged in 08a8d8f1, as there appear
135 # to be outfits with *COPY PASTED* pieces of lib/DBIx/Class/Storage/*
136 # in their production codebases. There is no point in breaking these
137 # if whatever they used actually continues to work
142 my $cluck = "The @{[ (caller(1))[3] ]} constant is no more - adjust your code" . Carp::longmess();
144 warn $cluck unless $warned->{$cluck}++;
148 sub DBICTEST () { &$sigh }
149 sub PEEPEENESS () { &$sigh }
152 # FIXME - this is not supposed to be here
153 # Carp::Skip to the rescue soon
154 use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
158 use Storable 'nfreeze';
159 use Scalar::Util qw(weaken blessed reftype refaddr);
160 use Sub::Quote qw(qsub);
164 # Already correctly prototyped: perlbrew exec perl -MStorable -e 'warn prototype \&Storable::dclone'
165 BEGIN { *deep_clone = \&Storable::dclone }
169 sigwarn_silencer modver_gt_or_eq modver_gt_or_eq_and_lt
170 fail_on_internal_wantarray fail_on_internal_call
171 refdesc refcount hrefaddr set_subname describe_class_methods
172 scope_guard detected_reinvoked_destructor
173 is_exception dbic_internal_try visit_namespaces
174 quote_sub qsub perlstring serialize deep_clone dump_value uniq
176 UNRESOLVABLE_CONDITION
179 use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
182 # add preliminary attribute support
184 # To be revisited when Moo with proper attr support ships
185 Sub::Quote->VERSION(2.002);
187 # Override forcing no_defer, and adding naming consistency checks
189 Carp::confess( "Anonymous quoting not supported by the DBIC sub_quote override - supply a sub name" ) if
197 Carp::confess( "The DBIC sub_quote override expects sub name '$_[0]' to be fully qualified" )
198 unless $_[0] =~ /::/;
200 Carp::confess( "The DBIC sub_quote override expects the sub name '$_[0]' to match the supplied 'package' argument" ) if
203 defined $_[3]->{package}
205 index( $_[0], $_[3]->{package} ) != 0
208 my @caller = caller(0);
210 package => $caller[0],
212 warning_bits => $caller[9],
213 hintshash => $caller[10],
216 # explicitly forced for everything
220 my $cref = Sub::Quote::quote_sub( $_[0], $_[1], $_[2]||{}, $sq_opts );
223 # To be revisited when Moo with proper attr support ships
225 # external application does not work on things like :prototype(...), :lvalue, etc
229 Carp::confess( "The DBIC sub_quote override does not support applying of reserved attribute '$_'" )
230 } @{ $sq_opts->{attributes} || []}
232 Carp::confess( "The DBIC sub_quote override does not allow mixing 'attributes' with 'no_install'" )
233 if $sq_opts->{no_install};
235 # might be different from $sq_opts->{package};
236 my ($install_into) = $_[0] =~ /(.+)::[^:]+$/;
238 attributes->import( $install_into, $cref, @attrs );
244 sub sigwarn_silencer ($) {
247 croak "Expecting a regexp" if ref $pattern ne 'Regexp';
249 my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) };
251 return sub { &$orig_sig_warn unless $_[0] =~ $pattern };
254 sub perlstring ($) { q{"}. quotemeta( shift ). q{"} };
256 sub hrefaddr ($) { sprintf '0x%x', &refaddr||0 }
259 croak "Expecting a reference" if ! length ref $_[0];
261 # be careful not to trigger stringification,
262 # reuse @_ as a scratch-pad
263 sprintf '%s%s(0x%x)',
264 ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ),
271 croak "Expecting a reference" if ! length ref $_[0];
273 # No tempvars - must operate on $_[0], otherwise the pad
274 # will count as an extra ref
275 B::svref_2object($_[0])->REFCNT;
278 sub visit_namespaces {
279 my $args = { (ref $_[0]) ? %{$_[0]} : @_ };
281 my $visited_count = 1;
283 # A package and a namespace are subtly different things
284 $args->{package} ||= 'main';
285 $args->{package} = 'main' if $args->{package} =~ /^ :: (?: main )? $/x;
286 $args->{package} =~ s/^:://;
288 if ( $args->{action}->($args->{package}) ) {
290 ( ($args->{package} eq 'main') ? '' : $args->{package} )
295 $visited_count += visit_namespaces( %$args, package => $_ ) for
297 # this happens sometimes on %:: traversal
300 { $_ =~ /^(.+?)::$/ ? "$ns$1" : () }
301 do { no strict 'refs'; keys %$ns }
308 # FIXME In another life switch this to a polyfill like the one in namespace::clean
309 sub set_subname ($$) {
312 splice @_, 0, 1, caller(0) . "::$_[0]"
319 local $Storable::canonical = 1;
324 my( %seen, $seen_undef, $numeric_preserving_copy );
327 ? $seen{ $numeric_preserving_copy = $_ }++
334 local $Data::Dumper::Indent = 1
335 unless defined $Data::Dumper::Indent;
341 require Data::Dumper;
342 my $d = Data::Dumper->new([])
355 $d->Sparseseen(1) if modver_gt_or_eq (
356 'Data::Dumper', '2.136'
361 )->Values([$_[0]])->Dump;
363 $dd_obj->Reset->Values([]);
368 sub scope_guard (&) {
369 croak 'Calling scope_guard() in void context makes no sense'
370 if ! defined wantarray;
372 # no direct blessing of coderefs - DESTROY is buggy on those
373 bless [ $_[0] ], 'DBIx::Class::_Util::ScopeGuard';
377 DBIx::Class::_Util::ScopeGuard;
380 &DBIx::Class::_Util::detected_reinvoked_destructor;
382 local $@ if DBIx::Class::_ENV_::UNSTABLE_DOLLARAT;
390 "Execution of scope guard $_[0] resulted in the non-trappable exception:\n\n$@"
396 sub is_exception ($) {
400 # this is not strictly correct - an eval setting $@ to undef
401 # is *not* the same as an eval setting $@ to ''
402 # but for the sake of simplicity assume the following for
404 return 0 unless defined $e;
406 my ($not_blank, $suberror);
408 local $SIG{__DIE__} if $SIG{__DIE__};
411 # The ne() here is deliberate - a plain length($e), or worse "$e" ne
412 # will entirely obviate the need for the encolsing eval{}, as the
413 # condition we guard against is a missing fallback overload
414 $not_blank = ( $e ne '' );
419 if (defined $suberror) {
420 if (length (my $class = blessed($e) )) {
421 carp_unique( sprintf(
422 'External exception class %s implements partial (broken) overloading '
423 . 'preventing its instances from being used in simple ($x eq $y) '
424 . 'comparisons. Given Perl\'s "globally cooperative" exception '
425 . 'handling this type of brokenness is extremely dangerous on '
426 . 'exception objects, as it may (and often does) result in silent '
427 . '"exception substitution". DBIx::Class tries to work around this '
428 . 'as much as possible, but other parts of your software stack may '
429 . 'not be even aware of this. Please submit a bugreport against the '
430 . 'distribution containing %s and in the meantime apply a fix similar '
431 . 'to the one shown at %s, in order to ensure your exception handling '
432 . 'is saner application-wide. What follows is the actual error text '
433 . "as generated by Perl itself:\n\n%s\n ",
436 'http://v.gd/DBIC_overload_tempfix/',
440 # workaround, keeps spice flowing
441 $not_blank = !!( length $e );
444 # not blessed yet failed the 'ne'... this makes 0 sense...
450 # a ref evaluating to '' is definitively a "null object"
453 length( my $class = ref $e )
455 carp_unique( sprintf(
456 "Objects of external exception class '%s' stringify to '' (the "
457 . 'empty string), implementing the so called null-object-pattern. '
458 . 'Given Perl\'s "globally cooperative" exception handling using this '
459 . 'class of exceptions is extremely dangerous, as it may (and often '
460 . 'does) result in silent discarding of errors. DBIx::Class tries to '
461 . 'work around this as much as possible, but other parts of your '
462 . 'software stack may not be even aware of the problem. Please submit '
463 . 'a bugreport against the distribution containing %s',
477 # Recreate the logic of try(), while reusing the catch()/finally() as-is
479 # FIXME: We need to move away from Try::Tiny entirely (way too heavy and
480 # yes, shows up ON TOP of profiles) but this is a batle for another maint
481 sub dbic_internal_try (&;@) {
483 my $try_cref = shift;
484 my $catch_cref = undef; # apparently this is a thing... https://rt.perl.org/Public/Bug/Display.html?id=119311
488 if( ref($arg) eq 'Try::Tiny::Catch' ) {
490 croak 'dbic_internal_try() may not be followed by multiple catch() blocks'
495 elsif ( ref($arg) eq 'Try::Tiny::Finally' ) {
496 croak 'dbic_internal_try() does not support finally{}';
500 'dbic_internal_try() encountered an unexpected argument '
501 . "'@{[ defined $arg ? $arg : 'UNDEF' ]}' - perhaps "
502 . 'a missing semi-colon before or ' # trailing space important
507 my $wantarray = wantarray;
508 my $preexisting_exception = $@;
511 my $all_good = eval {
512 $@ = $preexisting_exception;
514 local $callstack_state->{in_internal_try} = 1
515 unless $callstack_state->{in_internal_try};
517 # always unset - someone may have snuck it in
518 local $SIG{__DIE__} if $SIG{__DIE__};
521 @ret = $try_cref->();
523 elsif( defined $wantarray ) {
524 $ret[0] = $try_cref->();
534 $@ = $preexisting_exception;
537 return $wantarray ? @ret : $ret[0]
539 elsif ( $catch_cref ) {
541 return $catch_cref->($exception);
548 sub in_internal_try { !! $callstack_state->{in_internal_try} }
552 my $destruction_registry = {};
554 sub DBIx::Class::__Util_iThreads_handler__::CLONE {
555 %$destruction_registry = map {
557 ? ( refaddr($_) => $_ )
559 } values %$destruction_registry;
561 weaken($_) for values %$destruction_registry;
563 # Dummy NEXTSTATE ensuring the all temporaries on the stack are garbage
564 # collected before leaving this scope. Depending on the code above, this
565 # may very well be just a preventive measure guarding future modifications
569 # This is almost invariably invoked from within DESTROY
570 # throwing exceptions won't work
571 sub detected_reinvoked_destructor {
573 # quick "garbage collection" pass - prevents the registry
574 # from slowly growing with a bunch of undef-valued keys
575 defined $destruction_registry->{$_} or delete $destruction_registry->{$_}
576 for keys %$destruction_registry;
578 if (! length ref $_[0]) {
579 printf STDERR '%s() expects a blessed reference %s',
583 return undef; # don't know wtf to do
585 elsif (! defined $destruction_registry->{ my $addr = refaddr($_[0]) } ) {
586 weaken( $destruction_registry->{$addr} = $_[0] );
590 carp_unique ( sprintf (
591 'Preventing *MULTIPLE* DESTROY() invocations on %s - an *EXTREMELY '
592 . 'DANGEROUS* condition which is *ALMOST CERTAINLY GLOBAL* within your '
593 . 'application, affecting *ALL* classes without active protection against '
594 . 'this. Diagnose and fix the root cause ASAP!!!%s',
596 ( ( $INC{'Devel/StackTrace.pm'} and ! do { local $@; eval { Devel::StackTrace->VERSION(2) } } )
597 ? " (likely culprit Devel::StackTrace\@@{[ Devel::StackTrace->VERSION ]} found in %INC, http://is.gd/D_ST_refcap)"
607 my $module_name_rx = qr/ \A [A-Z_a-z] [0-9A-Z_a-z]* (?: :: [0-9A-Z_a-z]+ )* \z /x;
608 my $ver_rx = qr/ \A [0-9]+ (?: \. [0-9]+ )* (?: \_ [0-9]+ )* \z /x;
610 sub modver_gt_or_eq ($$) {
611 my ($mod, $ver) = @_;
613 croak "Nonsensical module name supplied"
614 if ! defined $mod or $mod !~ $module_name_rx;
616 croak "Nonsensical minimum version supplied"
617 if ! defined $ver or $ver !~ $ver_rx;
620 my $ver_cache = ${"${mod}::__DBIC_MODULE_VERSION_CHECKS__"} ||= ( $mod->VERSION
622 : croak "$mod does not seem to provide a version (perhaps it never loaded)"
625 ! defined $ver_cache->{$ver}
627 $ver_cache->{$ver} = do {
629 local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ )
630 if SPURIOUS_VERSION_CHECK_WARNINGS;
632 local $SIG{__DIE__} if $SIG{__DIE__};
634 eval { $mod->VERSION($ver) } ? 1 : 0;
640 sub modver_gt_or_eq_and_lt ($$$) {
641 my ($mod, $v_ge, $v_lt) = @_;
643 croak "Nonsensical maximum version supplied"
644 if ! defined $v_lt or $v_lt !~ $ver_rx;
647 modver_gt_or_eq($mod, $v_ge)
649 ! modver_gt_or_eq($mod, $v_lt)
654 # FIXME - should be a private my(), but I'm too uncertain whether
655 # all bases are covered
656 our $describe_class_query_cache;
658 sub describe_class_methods {
659 my ($class, $requested_mro) = @_;
661 croak "Expecting a class name"
662 if not defined $class or $class !~ $module_name_rx;
664 $requested_mro ||= mro::get_mro($class);
666 # mro::set_mro() does not bump pkg_gen - WHAT THE FUCK?!
667 my $query_cache_key = "$class|$requested_mro";
669 my $stack_cache_key =
670 ( mro::get_mro($class) eq $requested_mro )
675 # use a cache on old MRO, since while we are recursing in this function
676 # nothing can possibly change (the speedup is immense)
677 # (yes, people could be tie()ing the stash and adding methods on access
678 # but there is a limit to how much crazy can be supported here)
680 # we use the cache for linear_isa lookups on new MRO as well - it adds
681 # a *tiny* speedup, and simplifies the code a lot
683 local $mro_recursor_stack->{cache} = {}
684 unless $mro_recursor_stack->{cache};
688 $my_gen += get_real_pkg_gen($_) for ( my @full_ISA = (
691 $mro_recursor_stack->{cache}{$stack_cache_key}{linear_isa}
693 mro::get_linear_isa($class, $requested_mro)
697 $mro_recursor_stack->{cache}{$class}{is_universal}
699 mro::is_universal($class)
701 $mro_recursor_stack->{cache}{UNIVERSAL}{linear_isa}
703 mro::get_linear_isa("UNIVERSAL")
708 my $slot = $describe_class_query_cache->{$query_cache_key} ||= {};
710 unless ( ($slot->{cumulative_gen}||0) == $my_gen ) {
712 # remove ourselves from ISA
719 @{ $mro_recursor_stack->{cache}{$stack_cache_key}{linear_isa} }
720 [ 1 .. $#{$mro_recursor_stack->{cache}{$stack_cache_key}{linear_isa}} ]
723 type => $requested_mro,
724 is_c3 => ( ($requested_mro eq 'c3') ? 1 : 0 ),
726 cumulative_gen => $my_gen,
729 # ensure the cache is populated for the parents, code below can then
730 # efficiently operate over the query_cache directly
731 describe_class_methods($_) for reverse @full_ISA;
735 # combine full ISA-order inherited and local method list into a
739 unshift @{ $slot->{methods}{$_->{name}} }, $_
744 $_->{via_class} ne $class
746 $slot->{methods_defined_in_class}{$_->{name}} = $_
751 @{ $slot->{methods}{$_->{name}} } > 1
755 $slot->{methods_with_supers}{$_->{name}} = $slot->{methods}{$_->{name}}
759 # what describe_class_methods for @full_ISA produced above
761 $describe_class_query_cache->{$_}{methods_defined_in_class} || {}
762 } } map { "$_|" . mro::get_mro($_) } reverse @full_ISA ),
764 # our own non-cleaned subs + their attributes
767 # need to account for dummy helper crefs under OLD_MRO
769 ! DBIx::Class::_ENV_::OLD_MRO
771 ! ( ( $Class::C3::MRO{$class} || {} )->{methods}{$_} )
774 # these 2 OR-ed checks are sufficient for 5.10+
776 ref(\ "${class}::"->{$_} ) ne 'GLOB'
778 defined( *{ "${class}::"->{$_} }{CODE} )
784 map { $_ => 1 } attributes::get( \&{"${class}::${_}"} )
788 } keys %{"${class}::"} )
792 # recalculate the pkg_gen on newer perls under Taint mode,
793 # because of shit like:
794 # perl -T -Mmro -e 'package Foo; sub bar {}; defined( *{ "Foo::"->{bar}}{CODE} ) and warn mro::get_pkg_gen("Foo") for (1,2,3)'
797 ! DBIx::Class::_ENV_::OLD_MRO
802 $slot->{cumulative_gen} = 0;
803 $slot->{cumulative_gen} += get_real_pkg_gen($_)
804 for $class, @full_ISA;
815 # Why not just use some higher-level module or at least File::Spec here?
817 # 1) This is a *very* rarely used function, and the deptree is large
818 # enough already as it is
820 # 2) (more importantly) Our tooling is utter shit in this area. There
821 # is no comprehensive support for UNC paths in PathTools and there
822 # are also various small bugs in representation across different
823 # path-manipulation CPAN offerings.
825 # Since this routine is strictly used for logical path processing (it
826 # *must* be able to work with not-yet-existing paths), use this seemingly
827 # simple but I *think* complete implementation to feed to other consumers
829 # If bugs are ever uncovered in this routine, *YOU ARE URGED TO RESIST*
830 # the impulse to bring in an external dependency. During runtime there
831 # is exactly one spot that could potentially maybe once in a blue moon
832 # use this function. Keep it lean.
835 ( $_[0] =~ m{ [\/\\] ( \.{0,2} ) ( [\/\\]* ) \z }x )
839 ( ( length($1) and ! length($2) ) ? '/' : '' )
846 File::Spec->catpath (
847 ( File::Spec->splitpath( "$_[0]" ) )[0,1],
856 # do not ask for a recent version, use 1.x API calls
857 File::Path::mkpath([ "$_[0]" ]); # File::Path does not like objects
862 my $list_ctx_ok_stack_marker;
864 sub fail_on_internal_wantarray () {
865 return if $list_ctx_ok_stack_marker;
867 if (! defined wantarray) {
868 croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard');
872 while ( ( (CORE::caller($cf+1))[3] || '' ) =~ / :: (?:
874 # these are public API parts that alter behavior on wantarray
875 search | search_related | slice | search_literal
879 # these are explicitly prefixed, since we only recognize them as valid
880 # escapes when they come from the guts of CDBICompat
881 CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all )
887 my ($fr, $want, $argdesc);
890 $fr = [ CORE::caller($cf) ];
891 $want = ( CORE::caller($cf-1) )[5];
892 $argdesc = ref $DB::args[0]
893 ? DBIx::Class::_Util::refdesc($DB::args[0])
899 $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
901 DBIx::Class::Exception->throw( sprintf (
902 "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts",
903 $argdesc, @{$fr}[1,2]
904 ), 'with_stacktrace');
907 weaken( $list_ctx_ok_stack_marker = my $mark = [] );
913 sub fail_on_internal_call {
917 $fr = [ CORE::caller(1) ];
918 $argdesc = ref $DB::args[0]
919 ? DBIx::Class::_Util::refdesc($DB::args[0])
920 : ( $DB::args[0] . '' )
925 # need to make allowance for a proxy-yet-direct call
927 $fr->[0] eq 'DBIx::Class::ResultSourceProxy'
929 @fr2 = (CORE::caller(2))
932 ( $fr->[3] =~ /([^:])+$/ )[0]
934 ( $fr2[3] =~ /([^:])+$/ )[0]
944 $check_fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
946 $check_fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there
948 DBIx::Class::Exception->throw( sprintf (
949 "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",
950 $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do {
953 B::Deparse->new->coderef2text(\&{$fr->[3]})
955 ), 'with_stacktrace');