use warnings;
use strict;
-use constant SPURIOUS_VERSION_CHECK_WARNINGS => ( "$]" < 5.010 ? 1 : 0);
-
-my $mro_recursor_stack;
+# For the love of everything that is crab-like: DO NOT reach into this
+# The entire thing is really fragile and should not be screwed with
+# unless absolutely and unavoidably necessary
+our $__describe_class_query_cache;
BEGIN {
package # hide from pause
use Config;
use constant {
+ PERL_VERSION => "$]",
+ OS_NAME => "$^O",
+ };
+
+ use constant {
# but of course
- BROKEN_FORK => ($^O eq 'MSWin32') ? 1 : 0,
+ BROKEN_FORK => (OS_NAME eq 'MSWin32') ? 1 : 0,
+
+ BROKEN_GOTO => ( PERL_VERSION < 5.008003 ) ? 1 : 0,
- BROKEN_GOTO => ( "$]" < 5.008003 ) ? 1 : 0,
+ # perl -MScalar::Util=weaken -e 'weaken( $hash{key} = \"value" )'
+ BROKEN_WEAK_SCALARREF_VALUES => ( PERL_VERSION < 5.008003 ) ? 1 : 0,
HAS_ITHREADS => $Config{useithreads} ? 1 : 0,
- UNSTABLE_DOLLARAT => ( "$]" < 5.013002 ) ? 1 : 0,
+ UNSTABLE_DOLLARAT => ( PERL_VERSION < 5.013002 ) ? 1 : 0,
( map
#
),
IV_SIZE => $Config{ivsize},
-
- OS_NAME => $^O,
};
- if ( "$]" < 5.009_005) {
+ if ( PERL_VERSION < 5.009_005) {
require MRO::Compat;
constant->import( OLD_MRO => 1 );
require Digest::MD5;
require Math::BigInt;
+ my $cur_class;
+ no strict 'refs';
+
# the non-assign-unless-there-is-a-hash is deliberate
- ( $mro_recursor_stack->{cache} || {} )->{$_[0]}{gen} ||= (
+ ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{gen} ||= (
Math::BigInt->new( '0x' . ( Digest::MD5::md5_hex( join "\0", map {
- ( $mro_recursor_stack->{cache} || {} )->{$_}{methlist} ||= do {
+ ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_}{methlist} ||= (
+
+ $cur_class = $_
- my $class = $_;
+ and
- no strict 'refs';
- my %methlist =
+ # RV to be hashed up and turned into a number
+ join "\0", (
+ $cur_class,
map
- # this is essentially a uniq_by step
- # it is crucial on OLD_MRO
- {( Scalar::Util::refaddr($_) => $_ )}
+ {(
+ # stringification should be sufficient, ignore names/refaddr entirely
+ $_,
+ do {
+ my @attrs;
+ local $@;
+ local $SIG{__DIE__} if $SIG{__DIE__};
+ # attributes::get may throw on blessed-false crefs :/
+ eval { @attrs = attributes::get( $_ ); 1 }
+ or warn "Unable to determine attributes of coderef $_ due to the following error: $@";
+ @attrs;
+ },
+ )}
map
- {
+ {(
+ # skip dummy C::C3 helper crefs
+ ! ( ( $Class::C3::MRO{$cur_class} || {} )->{methods}{$_} )
+ and
(
- ref(\ "${class}::"->{$_} ) ne 'GLOB'
+ ref(\ "${cur_class}::"->{$_} ) ne 'GLOB'
or
- defined( *{ "${class}::"->{$_} }{CODE} )
+ defined( *{ "${cur_class}::"->{$_} }{CODE} )
)
- ? ( \&{"${class}::$_"} )
+ )
+ ? ( \&{"${cur_class}::$_"} )
: ()
}
- keys %{ "${class}::" }
- ;
-
- # RV to be hashed up and turned into a number
- join "\0", (
- $class,
- map {(
- $_, # refaddr is sufficient, ignore names entirely
- attributes::get( $methlist{$_} )
- )} sort keys %methlist
- ),
- }
- } ( 'UNIVERSAL', @{
- ( $mro_recursor_stack->{cache} || {} )->{$_[0]}{linear_isa}
- ||=
- mro::get_linear_isa($_[0])
- } ) ) ) )
+ keys %{ "${cur_class}::" }
+ )
+ )
+ } (
+
+ @{
+ ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{linear_isa}
+ ||=
+ mro::get_linear_isa($_[0])
+ },
+
+ ((
+ ( $__describe_class_query_cache->{'!internal!'} || {} )->{$_[0]}{is_universal}
+ ||=
+ mro::is_universal($_[0])
+ ) ? () : @{
+ ( $__describe_class_query_cache->{'!internal!'} || {} )->{UNIVERSAL}{linear_isa}
+ ||=
+ mro::get_linear_isa("UNIVERSAL")
+ } ),
+
+ ) ) ) )
);
};
}
# to be outfits with *COPY PASTED* pieces of lib/DBIx/Class/Storage/*
# in their production codebases. There is no point in breaking these
# if whatever they used actually continues to work
- my $warned;
my $sigh = sub {
-
- require Carp;
- my $cluck = "The @{[ (caller(1))[3] ]} constant is no more - adjust your code" . Carp::longmess();
-
- warn $cluck unless $warned->{$cluck}++;
+ DBIx::Class::_Util::emit_loud_diag(
+ skip_frames => 1,
+ msg => "The @{[ (caller(1))[3] ]} constant is no more - adjust your code"
+ );
0;
};
sub PEEPEENESS () { &$sigh }
}
+use constant SPURIOUS_VERSION_CHECK_WARNINGS => ( DBIx::Class::_ENV_::PERL_VERSION < 5.010 ? 1 : 0);
+
# FIXME - this is not supposed to be here
# Carp::Skip to the rescue soon
use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
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 describe_class_methods
- scope_guard detected_reinvoked_destructor
+ refdesc refcount hrefaddr set_subname get_subname describe_class_methods
+ scope_guard detected_reinvoked_destructor emit_loud_diag
+ true false
is_exception dbic_internal_try visit_namespaces
quote_sub qsub perlstring serialize deep_clone dump_value uniq
parent_dir mkdir_p
use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
-BEGIN {
- # add preliminary attribute support
- # FIXME FIXME FIXME
- # To be revisited when Moo with proper attr support ships
- Sub::Quote->VERSION(2.002);
-}
# Override forcing no_defer, and adding naming consistency checks
+our %refs_closed_over_by_quote_sub_installed_crefs;
sub quote_sub {
- Carp::confess( "Anonymous quoting not supported by the DBIC sub_quote override - supply a sub name" ) if
+ Carp::confess( "Anonymous quoting not supported by the DBIC quote_sub override - supply a sub name" ) if
@_ < 2
or
! defined $_[1]
length ref $_[1]
;
- Carp::confess( "The DBIC sub_quote override expects sub name '$_[0]' to be fully qualified" )
- unless $_[0] =~ /::/;
+ Carp::confess( "The DBIC quote_sub override expects sub name '$_[0]' to be fully qualified" )
+ unless (my $stash) = $_[0] =~ /^(.+)::/;
+
+ Carp::confess(
+ "The DBIC sub_quote override does not support 'no_install'"
+ ) if (
+ $_[3]
+ and
+ $_[3]->{no_install}
+ );
- Carp::confess( "The DBIC sub_quote override expects the sub name '$_[0]' to match the supplied 'package' argument" ) if
+ Carp::confess(
+ 'The DBIC quote_sub override expects the namespace-part of sub name '
+ . "'$_[0]' to match the supplied package argument '$_[3]->{package}'"
+ ) if (
$_[3]
and
defined $_[3]->{package}
and
- index( $_[0], $_[3]->{package} ) != 0
- ;
+ $stash ne $_[3]->{package}
+ );
my @caller = caller(0);
my $sq_opts = {
no_defer => 1,
};
- my $cref = Sub::Quote::quote_sub( $_[0], $_[1], $_[2]||{}, $sq_opts );
-
- # FIXME FIXME FIXME
- # To be revisited when Moo with proper attr support ships
- if(
- # external application does not work on things like :prototype(...), :lvalue, etc
- my @attrs = grep {
- $_ !~ /^[a-z]/
+ weaken (
+ # just use a growing counter, no need to perform neither compaction
+ # nor any special ithread-level handling
+ $refs_closed_over_by_quote_sub_installed_crefs
+ { scalar keys %refs_closed_over_by_quote_sub_installed_crefs }
+ = $_
+ ) for grep {
+ length ref $_
+ and
+ (
+ ! DBIx::Class::_ENV_::BROKEN_WEAK_SCALARREF_VALUES
or
- Carp::confess( "The DBIC sub_quote override does not support applying of reserved attribute '$_'" )
- } @{ $sq_opts->{attributes} || []}
- ) {
- Carp::confess( "The DBIC sub_quote override does not allow mixing 'attributes' with 'no_install'" )
- if $sq_opts->{no_install};
-
- # might be different from $sq_opts->{package};
- my ($install_into) = $_[0] =~ /(.+)::[^:]+$/;
-
- attributes->import( $install_into, $cref, @attrs );
- }
+ ref $_ ne 'SCALAR'
+ )
+ } values %{ $_[2] || {} };
- $cref;
+ Sub::Quote::quote_sub( $_[0], $_[1], $_[2]||{}, $sq_opts );
}
sub sigwarn_silencer ($) {
$visited_count;
}
-# FIXME In another life switch this to a polyfill like the one in namespace::clean
+# FIXME In another life switch these to a polyfill like the ones in namespace::clean
+sub get_subname ($) {
+ my $gv = B::svref_2object( $_[0] )->GV;
+ wantarray
+ ? ( $gv->STASH->NAME, $gv->NAME )
+ : ( join '::', $gv->STASH->NAME, $gv->NAME )
+ ;
+}
sub set_subname ($$) {
# fully qualify name
$dump_str;
}
+my $seen_loud_screams;
+sub emit_loud_diag {
+ my $args = { ref $_[0] eq 'HASH' ? %{$_[0]} : @_ };
+
+ unless ( defined $args->{msg} and length $args->{msg} ) {
+ emit_loud_diag(
+ msg => "No 'msg' value supplied to emit_loud_diag()"
+ );
+ exit 70;
+ }
+
+ my $msg = "\n$0: $args->{msg}";
+
+ # when we die - we usually want to keep doing it
+ $args->{emit_dups} = !!$args->{confess}
+ unless exists $args->{emit_dups};
+
+ local $Carp::CarpLevel =
+ ( $args->{skip_frames} || 0 )
+ +
+ $Carp::CarpLevel
+ +
+ # hide our own frame
+ 1
+ ;
+
+ my $longmess = Carp::longmess();
+
+ # different object references will thwart deduplication without this
+ ( my $key = "${msg}\n${longmess}" ) =~ s/\b0x[0-9a-f]+\b/0x.../gi;
+
+ return $seen_loud_screams->{$key} if
+ $seen_loud_screams->{$key}++
+ and
+ ! $args->{emit_dups}
+ ;
+
+ $msg .= $longmess
+ unless $msg =~ /\n\z/;
+
+ print STDERR "$msg\n"
+ or
+ print STDOUT "\n!!!STDERR ISN'T WRITABLE!!!:$msg\n";
+
+ return $seen_loud_screams->{$key}
+ unless $args->{confess};
+
+ # increment *again*, because... Carp.
+ $Carp::CarpLevel++;
+
+ # not $msg - Carp will reapply the longmess on its own
+ Carp::confess($args->{msg});
+}
+
+
+###
+### This is *NOT* boolean.pm - deliberately not using a singleton
+###
+{
+ package # hide from pause
+ DBIx::Class::_Util::_Bool;
+ use overload
+ bool => sub { ${$_[0]} },
+ fallback => 1,
+ ;
+}
+sub true () { my $x = 1; bless \$x, "DBIx::Class::_Util::_Bool" }
+sub false () { my $x = 0; bless \$x, "DBIx::Class::_Util::_Bool" }
+
sub scope_guard (&) {
croak 'Calling scope_guard() in void context makes no sense'
if ! defined wantarray;
1;
}
or
- Carp::cluck(
- "Execution of scope guard $_[0] resulted in the non-trappable exception:\n\n$@"
+ DBIx::Class::_Util::emit_loud_diag(
+ emit_dups => 1,
+ msg => "Execution of scope guard $_[0] resulted in the non-trappable exception:\n\n$@\n "
);
}
}
and
length( my $class = ref $e )
) {
- carp_unique( sprintf(
- "Objects of external exception class '%s' stringify to '' (the "
+ carp_unique(
+ "Objects of external exception class '$class' stringify to '' (the "
. 'empty string), implementing the so called null-object-pattern. '
. 'Given Perl\'s "globally cooperative" exception handling using this '
. 'class of exceptions is extremely dangerous, as it may (and often '
. 'does) result in silent discarding of errors. DBIx::Class tries to '
. 'work around this as much as possible, but other parts of your '
. 'software stack may not be even aware of the problem. Please submit '
- . 'a bugreport against the distribution containing %s',
-
- ($class) x 2,
- ));
+ . "a bugreport against the distribution containing '$class'",
+ );
$not_blank = 1;
}
for keys %$destruction_registry;
if (! length ref $_[0]) {
- printf STDERR '%s() expects a blessed reference %s',
- (caller(0))[3],
- Carp::longmess,
- ;
+ emit_loud_diag(
+ emit_dups => 1,
+ msg => (caller(0))[3] . '() expects a blessed reference'
+ );
return undef; # don't know wtf to do
}
elsif (! defined $destruction_registry->{ my $addr = refaddr($_[0]) } ) {
return 0;
}
else {
- carp_unique ( sprintf (
+ emit_loud_diag( msg => sprintf (
'Preventing *MULTIPLE* DESTROY() invocations on %s - an *EXTREMELY '
. 'DANGEROUS* condition which is *ALMOST CERTAINLY GLOBAL* within your '
. 'application, affecting *ALL* classes without active protection against '
}
{
- # FIXME - should be a private my(), but I'm too uncertain whether
- # all bases are covered
- our $describe_class_query_cache;
sub describe_class_methods {
- my ($class) = @_;
+ my $args = (
+ ref $_[0] eq 'HASH' ? $_[0]
+ : ( @_ == 1 and ! length ref $_[0] ) ? { class => $_[0] }
+ : { @_ }
+ );
- croak "Expecting a class name"
+ my ($class, $requested_mro) = @{$args}{qw( class use_mro )};
+
+ croak "Expecting a class name either as the sole argument or a 'class' option"
if not defined $class or $class !~ $module_name_rx;
+ $requested_mro ||= mro::get_mro($class);
+
+ # mro::set_mro() does not bump pkg_gen - WHAT THE FUCK?!
+ my $query_cache_key = "$class|$requested_mro";
+
+ my $internal_cache_key =
+ ( mro::get_mro($class) eq $requested_mro )
+ ? $class
+ : $query_cache_key
+ ;
+
# 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
# 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};
+ local $__describe_class_query_cache->{'!internal!'} = {}
+ unless $__describe_class_query_cache->{'!internal!'};
my $my_gen = 0;
- $my_gen += get_real_pkg_gen($_) for (
- 'UNIVERSAL',
- ( $class, my @my_ISA ) = @{
- $mro_recursor_stack->{cache}{$class}{linear_isa}
+ $my_gen += get_real_pkg_gen($_) for ( my @full_ISA = (
+
+ @{
+ $__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa}
||=
- mro::get_linear_isa($class)
- }
- );
+ mro::get_linear_isa($class, $requested_mro)
+ },
+
+ ((
+ $__describe_class_query_cache->{'!internal!'}{$class}{is_universal}
+ ||=
+ mro::is_universal($class)
+ ) ? () : @{
+ $__describe_class_query_cache->{'!internal!'}{UNIVERSAL}{linear_isa}
+ ||=
+ mro::get_linear_isa("UNIVERSAL")
+ }),
- my $slot = $describe_class_query_cache->{$class} ||= {};
+ ));
+
+ my $slot = $__describe_class_query_cache->{$query_cache_key} ||= {};
unless ( ($slot->{cumulative_gen}||0) == $my_gen ) {
# reset
%$slot = (
class => $class,
- isa => [ @my_ISA ], # copy before we shove UNIVERSAL into it
+ isa => { map { $_ => 1 } @full_ISA },
+ linear_isa => [
+ @{ $__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa} }
+ [ 1 .. $#{$__describe_class_query_cache->{'!internal!'}{$internal_cache_key}{linear_isa}} ]
+ ],
mro => {
- type => mro::get_mro($class),
+ type => $requested_mro,
+ is_c3 => ( ($requested_mro eq 'c3') ? 1 : 0 ),
},
cumulative_gen => $my_gen,
);
- $slot->{mro}{is_c3} = ($slot->{mro}{type} eq 'c3') ? 1 : 0;
- push @my_ISA, 'UNIVERSAL';
+ # remove ourselves from ISA
+ shift @full_ISA;
# ensure the cache is populated for the parents, code below can then
# efficiently operate over the query_cache directly
- describe_class_methods($_) for reverse @my_ISA;
+ describe_class_methods($_) for reverse @full_ISA;
- 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
-
unshift @{ $slot->{methods}{$_->{name}} }, $_
and
) for (
- # what describe_class_methods for @my_ISA produced above
+ # what describe_class_methods for @full_ISA produced above
( map { values %{
- $describe_class_query_cache->{$_}{methods_defined_in_class} || {}
- } } reverse @my_ISA ),
+ $__describe_class_query_cache->{$_}{methods_defined_in_class} || {}
+ } } map { "$_|" . mro::get_mro($_) } reverse @full_ISA ),
# our own non-cleaned subs + their attributes
( map {
(
- # these 2 OR-ed checks are sufficient for 5.10+
+ # need to account for dummy helper crefs under OLD_MRO
(
- ref(\ "${class}::"->{$_} ) ne 'GLOB'
+ ! DBIx::Class::_ENV_::OLD_MRO
or
- defined( *{ "${class}::"->{$_} }{CODE} )
+ ! ( ( $Class::C3::MRO{$class} || {} )->{methods}{$_} )
)
and
- # need to account for dummy helper crefs under OLD_MRO
+ # these 2 OR-ed checks are sufficient for 5.10+
(
- ! DBIx::Class::_ENV_::OLD_MRO
+ ref(\ "${class}::"->{$_} ) ne 'GLOB'
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( \&{"${class}::${_}"} ) }
- )
- )
+ defined( *{ "${class}::"->{$_} }{CODE} )
)
) ? {
via_class => $class,
name => $_,
- attributes => {
- map { $_ => 1 } attributes::get( \&{"${class}::${_}"} )
- },
+ attributes => { map { $_ => 1 } do {
+ my @attrs;
+ local $@;
+ local $SIG{__DIE__} if $SIG{__DIE__};
+ # attributes::get may throw on blessed-false crefs :/
+ eval { @attrs = attributes::get( \&{"${class}::${_}"} ); 1 }
+ or warn "Unable to determine attributes of the \\&${class}::$_ method due to following error: $@";
+ @attrs;
+ } },
}
: ()
} keys %{"${class}::"} )
$slot->{cumulative_gen} = 0;
$slot->{cumulative_gen} += get_real_pkg_gen($_)
- for $class, @my_ISA;
+ for $class, @full_ISA;
}
}