1 package # hide from PAUSE
7 use constant SPURIOUS_VERSION_CHECK_WARNINGS => ($] < 5.010 ? 1 : 0);
10 package # hide from pause
18 BROKEN_FORK => ($^O eq 'MSWin32') ? 1 : 0,
20 BROKEN_GOTO => ($] < '5.008003') ? 1 : 0,
22 HAS_ITHREADS => $Config{useithreads} ? 1 : 0,
24 # ::Runmode would only be loaded by DBICTest, which in turn implies t/
25 DBICTEST => eval { DBICTest::RunMode->is_author } ? 1 : 0,
27 # During 5.13 dev cycle HELEMs started to leak on copy
28 # add an escape for these perls ON SMOKERS - a user will still get death
29 PEEPEENESS => ( eval { DBICTest::RunMode->is_smoker } && ($] >= 5.013005 and $] <= 5.013006) ),
31 SHUFFLE_UNORDERED_RESULTSETS => $ENV{DBIC_SHUFFLE_UNORDERED_RESULTSETS} ? 1 : 0,
33 ASSERT_NO_INTERNAL_WANTARRAY => $ENV{DBIC_ASSERT_NO_INTERNAL_WANTARRAY} ? 1 : 0,
35 ASSERT_NO_INTERNAL_INDIRECT_CALLS => $ENV{DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS} ? 1 : 0,
37 STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE => $ENV{DBIC_STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE} ? 1 : 0,
39 STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE => $ENV{DBIC_STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE} ? 1 : 0,
41 IV_SIZE => $Config{ivsize},
48 constant->import( OLD_MRO => 1 );
52 constant->import( OLD_MRO => 0 );
56 # FIXME - this is not supposed to be here
57 # Carp::Skip to the rescue soon
58 use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
62 use Storable 'nfreeze';
63 use Scalar::Util qw(weaken blessed reftype);
64 use List::Util qw(first);
66 # DO NOT edit away without talking to riba first, he will just put it back
67 # BEGIN pre-Moo2 import block
69 my $initial_fatal_bits = (${^WARNING_BITS}||'') & $warnings::DeadBits{all};
71 local $ENV{PERL_STRICTURES_EXTRA} = 0;
72 # load all of these now, so that lazy-loading does not escape
73 # the current PERL_STRICTURES_EXTRA setting
77 Sub::Quote->import('quote_sub');
78 ${^WARNING_BITS} &= ( $initial_fatal_bits | ~ $warnings::DeadBits{all} );
80 sub qsub ($) { goto "e_sub } # no point depping on new Moo just for this
81 # END pre-Moo2 import block
83 # Already correctly prototyped: perlbrew exec perl -MStorable -e 'warn prototype \&Storable::dclone'
84 BEGIN { *deep_clone = \&Storable::dclone }
88 sigwarn_silencer modver_gt_or_eq modver_gt_or_eq_and_lt
89 fail_on_internal_wantarray fail_on_internal_call
90 refdesc refcount hrefaddr is_exception
91 quote_sub qsub perlstring serialize deep_clone
92 UNRESOLVABLE_CONDITION
95 use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
97 sub sigwarn_silencer ($) {
100 croak "Expecting a regexp" if ref $pattern ne 'Regexp';
102 my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) };
104 return sub { &$orig_sig_warn unless $_[0] =~ $pattern };
107 sub perlstring ($) { q{"}. quotemeta( shift ). q{"} };
109 sub hrefaddr ($) { sprintf '0x%x', &Scalar::Util::refaddr||0 }
112 croak "Expecting a reference" if ! length ref $_[0];
114 # be careful not to trigger stringification,
115 # reuse @_ as a scratch-pad
116 sprintf '%s%s(0x%x)',
117 ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ),
119 Scalar::Util::refaddr($_[0]),
124 croak "Expecting a reference" if ! length ref $_[0];
126 # No tempvars - must operate on $_[0], otherwise the pad
127 # will count as an extra ref
128 B::svref_2object($_[0])->REFCNT;
132 local $Storable::canonical = 1;
136 sub is_exception ($) {
139 # this is not strictly correct - an eval setting $@ to undef
140 # is *not* the same as an eval setting $@ to ''
141 # but for the sake of simplicity assume the following for
143 return 0 unless defined $e;
145 my ($not_blank, $suberror);
149 $not_blank = ($e ne '') ? 1 : 0;
154 if (defined $suberror) {
155 if (length (my $class = blessed($e) )) {
156 carp_unique( sprintf(
157 'External exception class %s implements partial (broken) overloading '
158 . 'preventing its instances from being used in simple ($x eq $y) '
159 . 'comparisons. Given Perl\'s "globally cooperative" exception '
160 . 'handling this type of brokenness is extremely dangerous on '
161 . 'exception objects, as it may (and often does) result in silent '
162 . '"exception substitution". DBIx::Class tries to work around this '
163 . 'as much as possible, but other parts of your software stack may '
164 . 'not be even aware of this. Please submit a bugreport against the '
165 . 'distribution containing %s and in the meantime apply a fix similar '
166 . 'to the one shown at %s, in order to ensure your exception handling '
167 . 'is saner application-wide. What follows is the actual error text '
168 . "as generated by Perl itself:\n\n%s\n ",
171 'http://v.gd/DBIC_overload_tempfix/',
175 # workaround, keeps spice flowing
176 $not_blank = ("$e" ne '') ? 1 : 0;
179 # not blessed yet failed the 'ne'... this makes 0 sense...
188 sub modver_gt_or_eq ($$) {
189 my ($mod, $ver) = @_;
191 croak "Nonsensical module name supplied"
192 if ! defined $mod or ! length $mod;
194 croak "Nonsensical minimum version supplied"
195 if ! defined $ver or $ver =~ /[^0-9\.\_]/;
197 local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ )
198 if SPURIOUS_VERSION_CHECK_WARNINGS;
200 croak "$mod does not seem to provide a version (perhaps it never loaded)"
201 unless $mod->VERSION;
204 eval { $mod->VERSION($ver) } ? 1 : 0;
207 sub modver_gt_or_eq_and_lt ($$$) {
208 my ($mod, $v_ge, $v_lt) = @_;
210 croak "Nonsensical maximum version supplied"
211 if ! defined $v_lt or $v_lt =~ /[^0-9\.\_]/;
214 modver_gt_or_eq($mod, $v_ge)
216 ! modver_gt_or_eq($mod, $v_lt)
221 my $list_ctx_ok_stack_marker;
223 sub fail_on_internal_wantarray () {
224 return if $list_ctx_ok_stack_marker;
226 if (! defined wantarray) {
227 croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard');
231 while ( ( (caller($cf+1))[3] || '' ) =~ / :: (?:
233 # these are public API parts that alter behavior on wantarray
234 search | search_related | slice | search_literal
238 # these are explicitly prefixed, since we only recognize them as valid
239 # escapes when they come from the guts of CDBICompat
240 CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all )
246 my ($fr, $want, $argdesc);
249 $fr = [ caller($cf) ];
250 $want = ( caller($cf-1) )[5];
251 $argdesc = ref $DB::args[0]
252 ? DBIx::Class::_Util::refdesc($DB::args[0])
258 $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
260 DBIx::Class::Exception->throw( sprintf (
261 "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts",
262 $argdesc, @{$fr}[1,2]
263 ), 'with_stacktrace');
267 weaken ( $list_ctx_ok_stack_marker = $mark );
272 sub fail_on_internal_call {
277 $argdesc = ref $DB::args[0]
278 ? DBIx::Class::_Util::refdesc($DB::args[0])
286 $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
288 $fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there
290 DBIx::Class::Exception->throw( sprintf (
291 "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",
292 $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do {
295 B::Deparse->new->coderef2text(\&{$fr->[3]})
297 ), 'with_stacktrace');