use constant SPURIOUS_VERSION_CHECK_WARNINGS => ( "$]" < 5.010 ? 1 : 0);
+my $mro_recursor_stack;
+
BEGIN {
package # hide from pause
DBIx::Class::_ENV_;
if ( "$]" < 5.009_005) {
require MRO::Compat;
constant->import( OLD_MRO => 1 );
+
+ #
+ # Yes, I know this is a rather PHP-ish name, but please first read
+ # https://metacpan.org/source/BOBTFISH/MRO-Compat-0.12/lib/MRO/Compat.pm#L363-368
+ #
+ # Even if we are using Class::C3::XS it still won't work, as doing
+ # defined( *{ "SubClass::"->{$_} }{CODE} )
+ # will set pkg_gen to the same value for SubClass and *ALL PARENTS*
+ #
+ *DBIx::Class::_Util::get_real_pkg_gen = sub ($) {
+ require Digest::MD5;
+ require Math::BigInt;
+
+ # the non-assign-unless-there-is-a-hash is deliberate
+ ( $mro_recursor_stack->{cache} || {} )->{$_[0]}{gen} ||= (
+ Math::BigInt->new( '0x' . ( Digest::MD5::md5_hex( join "\0", map {
+
+ ( $mro_recursor_stack->{cache} || {} )->{$_}{methlist} ||= do {
+
+ my $class = $_;
+
+ no strict 'refs';
+ my %methlist =
+ map
+ # this is essentially a uniq_by step
+ # it is crucial on OLD_MRO
+ {( Scalar::Util::refaddr($_) => $_ )}
+ map
+ {
+ (
+ ref(\ "${class}::"->{$_} ) ne 'GLOB'
+ or
+ defined( *{ "${class}::"->{$_} }{CODE} )
+ )
+ ? ( \&{"${class}::$_"} )
+ : ()
+ }
+ keys %{ "${class}::" }
+ ;
+
+ # RV to be hashed up and turned into a number
+ join "\0", (
+ $class,
+ map {(
+ $_, # refaddr is sufficient, ignore names entirely
+ @{
+ ( $mro_recursor_stack->{cache} || {} )->{attrs}{$_}
+ ||=
+ [ attributes::get( $methlist{$_} ) ]
+ },
+ )} sort keys %methlist
+ ),
+ }
+ } ( 'UNIVERSAL', @{
+ ( $mro_recursor_stack->{cache} || {} )->{$_[0]}{linear_isa}
+ ||=
+ mro::get_linear_isa($_[0])
+ } ) ) ) )
+ );
+ };
}
else {
require mro;
constant->import( OLD_MRO => 0 );
+ *DBIx::Class::_Util::get_real_pkg_gen = \&mro::get_pkg_gen;
}
# Both of these are no longer used for anything. However bring
use Scalar::Util qw(weaken blessed reftype refaddr);
use Sub::Quote qw(qsub);
use Sub::Name ();
+use attributes ();
# Already correctly prototyped: perlbrew exec perl -MStorable -e 'warn prototype \&Storable::dclone'
BEGIN { *deep_clone = \&Storable::dclone }
our @EXPORT_OK = qw(
sigwarn_silencer modver_gt_or_eq modver_gt_or_eq_and_lt
fail_on_internal_wantarray fail_on_internal_call
- refdesc refcount hrefaddr set_subname
+ refdesc refcount hrefaddr set_subname describe_class_methods
scope_guard detected_reinvoked_destructor
is_exception dbic_internal_try visit_namespaces
quote_sub qsub perlstring serialize deep_clone dump_value uniq
# FIXME FIXME FIXME
# To be revisited when Moo with proper attr support ships
Sub::Quote->VERSION(2.002);
- require attributes;
}
# Override forcing no_defer, and adding naming consistency checks
sub quote_sub {
) ? 1 : 0;
}
+{
+ # FIXME - should be a private my(), but I'm too uncertain whether
+ # all bases are covered
+ our $describe_class_query_cache;
+
+ sub describe_class_methods {
+
+ croak "Expecting a class name"
+ if not defined $_[0] or $_[0] !~ $module_name_rx;
+
+ # use a cache on old MRO, since while we are recursing in this function
+ # nothing can possibly change (the speedup is immense)
+ # (yes, people could be tie()ing the stash and adding methods on access
+ # but there is a limit to how much crazy can be supported here)
+ #
+ # we use the cache for linear_isa lookups on new MRO as well - it adds
+ # a *tiny* speedup, and simplifies the code a lot
+ #
+ local $mro_recursor_stack->{cache} = {}
+ unless $mro_recursor_stack->{cache};
+
+ my $my_gen = 0;
+
+ $my_gen += get_real_pkg_gen($_) for (
+ 'UNIVERSAL',
+ my ($class, @my_ISA) = @{
+ $mro_recursor_stack->{cache}{$_[0]}{linear_isa}
+ ||=
+ mro::get_linear_isa($_[0])
+ }
+ );
+
+ my $slot = $describe_class_query_cache->{$class} ||= {};
+
+ unless ( ($slot->{cumulative_gen}||0) == $my_gen ) {
+
+ # reset
+ %$slot = (
+ class => $class,
+ isa => [ @my_ISA ], # copy before we shove UNIVERSAL into it
+ mro => {
+ type => mro::get_mro($class),
+ },
+ cumulative_gen => $my_gen,
+ );
+ $slot->{mro}{is_c3} = ($slot->{mro}{type} eq 'c3') ? 1 : 0;
+
+ push @my_ISA, 'UNIVERSAL';
+
+ # ensure the cache is populated for the parents, code below can then
+ # efficiently operate over the query_cache directly
+ for (reverse @my_ISA) {
+ my ($parent_gen, @parent_ISA);
+
+ # and even more skips before calling out recursively
+ describe_class_methods($_) unless (
+ $describe_class_query_cache->{$_}{cumulative_gen}
+ and
+ $parent_gen = get_real_pkg_gen($_)
+ and
+ (
+ (
+ (undef, @parent_ISA) = @{
+ $mro_recursor_stack->{cache}{$_}{linear_isa}
+ ||=
+ mro::get_linear_isa($_)
+ }
+ ) == 1
+ or
+ do {
+ $parent_gen += get_real_pkg_gen($_) for @parent_ISA;
+ 1;
+ }
+ )
+ and
+ $describe_class_query_cache->{$_}{cumulative_gen} == $parent_gen
+ );
+ }
+
+ my ($methods_seen_via_ISA_on_old_mro, $current_node_refaddr);
+ no strict 'refs';
+
+ # combine full ISA-order inherited and local method list into a
+ # "shadowing stack"
+
+ (
+ $current_node_refaddr = refaddr($_)
+
+ and
+
+ # on complex MI herarchies the method can be anywhere in the
+ # shadow stack - look through the entire slot, not just [0]
+ ( ! grep {
+ refaddr($_) == $current_node_refaddr
+ } @{ $slot->{methods}{ $_->{name} } || [] } )
+
+ and
+
+ unshift @{ $slot->{methods}{$_->{name}} }, $_
+
+ and
+
+ @{ $slot->{methods}{$_->{name}} } > 1
+
+ and
+
+ $slot->{methods_with_supers}{$_->{name}} = $slot->{methods}{$_->{name}}
+
+ ) for (
+
+ # what describe_class_methods for @my_ISA produced above
+ ( map { $_->[0] } map {
+ values %{ $describe_class_query_cache->{$_}{methods} }
+ } reverse @my_ISA ),
+
+ # our own non-cleaned subs + their attributes
+ ( map {
+ (
+ # these 2 OR-ed checks are sufficient for 5.10+
+ (
+ ref(\ "${class}::"->{$_} ) ne 'GLOB'
+ or
+ defined( *{ "${class}::"->{$_} }{CODE} )
+ )
+ and
+ # need to account for dummy helper crefs under OLD_MRO
+ (
+ ! DBIx::Class::_ENV_::OLD_MRO
+ or
+ (
+ $methods_seen_via_ISA_on_old_mro ||= do {
+ my $rv = {};
+ $rv->{$_->{name}}->{ refaddr( \&{ "$_->{via_class}::$_->{name}"} ) } = 1 for
+ map { @$_ } map
+ { values %{ $describe_class_query_cache->{$_}{methods} } }
+ @my_ISA;
+ $rv;
+ }
+ and
+ (
+ ! $methods_seen_via_ISA_on_old_mro->{$_}
+ or
+ ! $methods_seen_via_ISA_on_old_mro->{$_}{ refaddr( \&{"${class}::${_}"} ) }
+ )
+ )
+ )
+ ) ? {
+ via_class => $class,
+ name => $_,
+ attributes => { map { $_ => 1 } @{
+ $mro_recursor_stack->{cache}{attrs}{ refaddr \&{"${class}::${_}"} }
+ ||=
+ [ attributes::get( \&{"${class}::${_}"} ) ]
+ } },
+ }
+ : ()
+ } keys %{"${class}::"} )
+ );
+
+
+ # recalculate the pkg_gen on newer perls under Taint mode,
+ # because of shit like:
+ # perl -T -Mmro -e 'package Foo; sub bar {}; defined( *{ "Foo::"->{bar}}{CODE} ) and warn mro::get_pkg_gen("Foo") for (1,2,3)'
+ #
+ if (
+ ! DBIx::Class::_ENV_::OLD_MRO
+ and
+ ${^TAINT}
+ ) {
+
+ $slot->{cumulative_gen} = 0;
+ $slot->{cumulative_gen} += get_real_pkg_gen($_)
+ for $class, @my_ISA;
+ }
+ }
+
+ # RV
+ +{ %$slot };
+ }
+}
+
#
# Why not just use some higher-level module or at least File::Spec here?
projects / dbsrgits/DBIx-Class.git / blobdiff