use warnings;
use strict;
-use constant SPURIOUS_VERSION_CHECK_WARNINGS => ($] < 5.010 ? 1 : 0);
+use constant SPURIOUS_VERSION_CHECK_WARNINGS => ( "$]" < 5.010 ? 1 : 0);
-use Carp;
+BEGIN {
+ package # hide from pause
+ DBIx::Class::_ENV_;
+
+ use Config;
+
+ use constant {
+
+ # but of course
+ BROKEN_FORK => ($^O eq 'MSWin32') ? 1 : 0,
+
+ BROKEN_GOTO => ( "$]" < 5.008003 ) ? 1 : 0,
+
+ HAS_ITHREADS => $Config{useithreads} ? 1 : 0,
+
+ DBICTEST => $INC{"DBICTest/Util.pm"} ? 1 : 0,
+
+ # During 5.13 dev cycle HELEMs started to leak on copy
+ # add an escape for these perls ON SMOKERS - a user will still get death
+ PEEPEENESS => ( eval { DBICTest::RunMode->is_smoker } && ( "$]" >= 5.013005 and "$]" <= 5.013006) ),
+
+ SHUFFLE_UNORDERED_RESULTSETS => $ENV{DBIC_SHUFFLE_UNORDERED_RESULTSETS} ? 1 : 0,
+
+ ASSERT_NO_INTERNAL_WANTARRAY => $ENV{DBIC_ASSERT_NO_INTERNAL_WANTARRAY} ? 1 : 0,
+
+ ASSERT_NO_INTERNAL_INDIRECT_CALLS => $ENV{DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS} ? 1 : 0,
+
+ STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE => $ENV{DBIC_STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE} ? 1 : 0,
+
+ STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE => $ENV{DBIC_STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE} ? 1 : 0,
+
+ IV_SIZE => $Config{ivsize},
+
+ OS_NAME => $^O,
+ };
+
+ if ( "$]" < 5.009_005) {
+ require MRO::Compat;
+ constant->import( OLD_MRO => 1 );
+ }
+ else {
+ require mro;
+ constant->import( OLD_MRO => 0 );
+ }
+}
+
+# FIXME - this is not supposed to be here
+# Carp::Skip to the rescue soon
+use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
+
+use B ();
+use Carp 'croak';
+use Storable 'nfreeze';
+use Scalar::Util qw(weaken blessed reftype refaddr);
+use List::Util qw(first);
+use Sub::Quote qw(qsub quote_sub);
+
+# Already correctly prototyped: perlbrew exec perl -MStorable -e 'warn prototype \&Storable::dclone'
+BEGIN { *deep_clone = \&Storable::dclone }
use base 'Exporter';
-our @EXPORT_OK = qw(modver_gt_or_eq);
+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 is_exception detected_reinvoked_destructor
+ quote_sub qsub perlstring serialize deep_clone
+ UNRESOLVABLE_CONDITION
+);
+
+use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
+
+sub sigwarn_silencer ($) {
+ my $pattern = shift;
+
+ croak "Expecting a regexp" if ref $pattern ne 'Regexp';
+
+ my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) };
+
+ return sub { &$orig_sig_warn unless $_[0] =~ $pattern };
+}
+
+sub perlstring ($) { q{"}. quotemeta( shift ). q{"} };
+
+sub hrefaddr ($) { sprintf '0x%x', &refaddr||0 }
+
+sub refdesc ($) {
+ croak "Expecting a reference" if ! length ref $_[0];
+
+ # be careful not to trigger stringification,
+ # reuse @_ as a scratch-pad
+ sprintf '%s%s(0x%x)',
+ ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ),
+ reftype $_[0],
+ refaddr($_[0]),
+ ;
+}
+
+sub refcount ($) {
+ croak "Expecting a reference" if ! length ref $_[0];
+
+ # No tempvars - must operate on $_[0], otherwise the pad
+ # will count as an extra ref
+ B::svref_2object($_[0])->REFCNT;
+}
+
+sub serialize ($) {
+ local $Storable::canonical = 1;
+ nfreeze($_[0]);
+}
+
+sub is_exception ($) {
+ my $e = $_[0];
+
+ # this is not strictly correct - an eval setting $@ to undef
+ # is *not* the same as an eval setting $@ to ''
+ # but for the sake of simplicity assume the following for
+ # the time being
+ return 0 unless defined $e;
+
+ my ($not_blank, $suberror);
+ {
+ local $@;
+ eval {
+ $not_blank = ($e ne '') ? 1 : 0;
+ 1;
+ } or $suberror = $@;
+ }
+
+ if (defined $suberror) {
+ if (length (my $class = blessed($e) )) {
+ carp_unique( sprintf(
+ 'External exception class %s implements partial (broken) overloading '
+ . 'preventing its instances from being used in simple ($x eq $y) '
+ . 'comparisons. Given Perl\'s "globally cooperative" exception '
+ . 'handling this type of brokenness is extremely dangerous on '
+ . 'exception objects, as it may (and often does) result in silent '
+ . '"exception substitution". DBIx::Class tries to work around this '
+ . 'as much as possible, but other parts of your software stack may '
+ . 'not be even aware of this. Please submit a bugreport against the '
+ . 'distribution containing %s and in the meantime apply a fix similar '
+ . 'to the one shown at %s, in order to ensure your exception handling '
+ . 'is saner application-wide. What follows is the actual error text '
+ . "as generated by Perl itself:\n\n%s\n ",
+ $class,
+ $class,
+ 'http://v.gd/DBIC_overload_tempfix/',
+ $suberror,
+ ));
+
+ # workaround, keeps spice flowing
+ $not_blank = ("$e" ne '') ? 1 : 0;
+ }
+ else {
+ # not blessed yet failed the 'ne'... this makes 0 sense...
+ # just throw further
+ die $suberror
+ }
+ }
+ elsif (
+ # a ref evaluating to '' is definitively a "null object"
+ ( not $not_blank )
+ and
+ length( my $class = ref $e )
+ ) {
+ carp_unique( sprintf(
+ "Objects of external exception class '%s' stringify to '' (the "
+ . 'empty string), implementing the so called null-object-pattern. '
+ . 'Given Perl\'s "globally cooperative" exception handling using this '
+ . 'class of exceptions is extremely dangerous, as it may (and often '
+ . 'does) result in silent discarding of errors. DBIx::Class tries to '
+ . 'work around this as much as possible, but other parts of your '
+ . 'software stack may not be even aware of the problem. Please submit '
+ . 'a bugreport against the distribution containing %s.',
+
+ ($class) x 2,
+ ));
+
+ $not_blank = 1;
+ }
+
+ return $not_blank;
+}
+
+{
+ my $destruction_registry = {};
+
+ sub CLONE {
+ $destruction_registry = { map
+ { defined $_ ? ( refaddr($_) => $_ ) : () }
+ values %$destruction_registry
+ };
+ }
+
+ # This is almost invariably invoked from within DESTROY
+ # throwing exceptions won't work
+ sub detected_reinvoked_destructor {
+
+ # quick "garbage collection" pass - prevents the registry
+ # from slowly growing with a bunch of undef-valued keys
+ defined $destruction_registry->{$_} or delete $destruction_registry->{$_}
+ for keys %$destruction_registry;
-sub modver_gt_or_eq {
+ if (! length ref $_[0]) {
+ printf STDERR '%s() expects a blessed reference %s',
+ (caller(0))[3],
+ Carp::longmess,
+ ;
+ return undef; # don't know wtf to do
+ }
+ elsif (! defined $destruction_registry->{ my $addr = refaddr($_[0]) } ) {
+ weaken( $destruction_registry->{$addr} = $_[0] );
+ return 0;
+ }
+ else {
+ carp_unique ( 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 '
+ . 'this. Diagnose and fix the root cause ASAP!!!%s',
+ refdesc $_[0],
+ ( ( $INC{'Devel/StackTrace.pm'} and ! do { local $@; eval { Devel::StackTrace->VERSION(2) } } )
+ ? " (likely culprit Devel::StackTrace\@@{[ Devel::StackTrace->VERSION ]} found in %INC, http://is.gd/D_ST_refcap)"
+ : ''
+ )
+ ));
+
+ return 1;
+ }
+ }
+}
+
+sub modver_gt_or_eq ($$) {
my ($mod, $ver) = @_;
croak "Nonsensical module name supplied"
croak "Nonsensical minimum version supplied"
if ! defined $ver or $ver =~ /[^0-9\.\_]/;
- local $SIG{__WARN__} = do {
- my $orig_sig_warn = $SIG{__WARN__} || sub { warn @_ };
- sub {
- $orig_sig_warn->(@_) unless $_[0] =~ /\Qisn't numeric in subroutine entry/
- }
- } if SPURIOUS_VERSION_CHECK_WARNINGS;
+ local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ )
+ if SPURIOUS_VERSION_CHECK_WARNINGS;
+
+ croak "$mod does not seem to provide a version (perhaps it never loaded)"
+ unless $mod->VERSION;
local $@;
eval { $mod->VERSION($ver) } ? 1 : 0;
}
+sub modver_gt_or_eq_and_lt ($$$) {
+ my ($mod, $v_ge, $v_lt) = @_;
+
+ croak "Nonsensical maximum version supplied"
+ if ! defined $v_lt or $v_lt =~ /[^0-9\.\_]/;
+
+ return (
+ modver_gt_or_eq($mod, $v_ge)
+ and
+ ! modver_gt_or_eq($mod, $v_lt)
+ ) ? 1 : 0;
+}
+
+{
+ my $list_ctx_ok_stack_marker;
+
+ sub fail_on_internal_wantarray () {
+ return if $list_ctx_ok_stack_marker;
+
+ if (! defined wantarray) {
+ croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard');
+ }
+
+ my $cf = 1;
+ while ( ( (CORE::caller($cf+1))[3] || '' ) =~ / :: (?:
+
+ # these are public API parts that alter behavior on wantarray
+ search | search_related | slice | search_literal
+
+ |
+
+ # these are explicitly prefixed, since we only recognize them as valid
+ # escapes when they come from the guts of CDBICompat
+ CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all )
+
+ ) $/x ) {
+ $cf++;
+ }
+
+ my ($fr, $want, $argdesc);
+ {
+ package DB;
+ $fr = [ CORE::caller($cf) ];
+ $want = ( CORE::caller($cf-1) )[5];
+ $argdesc = ref $DB::args[0]
+ ? DBIx::Class::_Util::refdesc($DB::args[0])
+ : 'non '
+ ;
+ };
+
+ if (
+ $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
+ ) {
+ DBIx::Class::Exception->throw( sprintf (
+ "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts",
+ $argdesc, @{$fr}[1,2]
+ ), 'with_stacktrace');
+ }
+
+ my $mark = [];
+ weaken ( $list_ctx_ok_stack_marker = $mark );
+ $mark;
+ }
+}
+
+sub fail_on_internal_call {
+ my ($fr, $argdesc);
+ {
+ package DB;
+ $fr = [ CORE::caller(1) ];
+ $argdesc = ref $DB::args[0]
+ ? DBIx::Class::_Util::refdesc($DB::args[0])
+ : undef
+ ;
+ };
+
+ if (
+ $argdesc
+ and
+ $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
+ and
+ $fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there
+ ) {
+ DBIx::Class::Exception->throw( sprintf (
+ "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",
+ $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do {
+ require B::Deparse;
+ no strict 'refs';
+ B::Deparse->new->coderef2text(\&{$fr->[3]})
+ }),
+ ), 'with_stacktrace');
+ }
+}
+
1;
projects / dbsrgits/DBIx-Class.git / blobdiff