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 IV_SIZE => $Config{ivsize},
44 constant->import( OLD_MRO => 1 );
48 constant->import( OLD_MRO => 0 );
52 # FIXME - this is not supposed to be here
53 # Carp::Skip to the rescue soon
54 use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
57 use Scalar::Util qw(weaken blessed reftype);
58 use List::Util qw(first);
60 # DO NOT edit away without talking to riba first, he will just put it back
61 # BEGIN pre-Moo2 import block
63 my $initial_fatal_bits = (${^WARNING_BITS}||'') & $warnings::DeadBits{all};
65 local $ENV{PERL_STRICTURES_EXTRA} = 0;
66 # load all of these now, so that lazy-loading does not escape
67 # the current PERL_STRICTURES_EXTRA setting
71 Sub::Quote->import('quote_sub');
72 ${^WARNING_BITS} &= ( $initial_fatal_bits | ~ $warnings::DeadBits{all} );
74 sub qsub ($) { goto "e_sub } # no point depping on new Moo just for this
75 # END pre-Moo2 import block
79 sigwarn_silencer modver_gt_or_eq
80 fail_on_internal_wantarray fail_on_internal_call
81 refdesc refcount hrefaddr is_exception
82 quote_sub qsub perlstring serialize
83 UNRESOLVABLE_CONDITION
86 use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
88 sub sigwarn_silencer ($) {
91 croak "Expecting a regexp" if ref $pattern ne 'Regexp';
93 my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) };
95 return sub { &$orig_sig_warn unless $_[0] =~ $pattern };
98 sub perlstring ($) { q{"}. quotemeta( shift ). q{"} };
100 sub hrefaddr ($) { sprintf '0x%x', &Scalar::Util::refaddr||0 }
103 croak "Expecting a reference" if ! length ref $_[0];
105 # be careful not to trigger stringification,
106 # reuse @_ as a scratch-pad
107 sprintf '%s%s(0x%x)',
108 ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ),
110 Scalar::Util::refaddr($_[0]),
115 croak "Expecting a reference" if ! length ref $_[0];
118 # No tempvars - must operate on $_[0], otherwise the pad
119 # will count as an extra ref
120 B::svref_2object($_[0])->REFCNT;
125 local $Storable::canonical = 1;
126 Storable::nfreeze($_[0]);
129 sub is_exception ($) {
132 # this is not strictly correct - an eval setting $@ to undef
133 # is *not* the same as an eval setting $@ to ''
134 # but for the sake of simplicity assume the following for
136 return 0 unless defined $e;
138 my ($not_blank, $suberror);
142 $not_blank = ($e ne '') ? 1 : 0;
147 if (defined $suberror) {
148 if (length (my $class = blessed($e) )) {
149 carp_unique( sprintf(
150 'External exception class %s implements partial (broken) overloading '
151 . 'preventing its instances from being used in simple ($x eq $y) '
152 . 'comparisons. Given Perl\'s "globally cooperative" exception '
153 . 'handling this type of brokenness is extremely dangerous on '
154 . 'exception objects, as it may (and often does) result in silent '
155 . '"exception substitution". DBIx::Class tries to work around this '
156 . 'as much as possible, but other parts of your software stack may '
157 . 'not be even aware of this. Please submit a bugreport against the '
158 . 'distribution containing %s and in the meantime apply a fix similar '
159 . 'to the one shown at %s, in order to ensure your exception handling '
160 . 'is saner application-wide. What follows is the actual error text '
161 . "as generated by Perl itself:\n\n%s\n ",
164 'http://v.gd/DBIC_overload_tempfix/',
168 # workaround, keeps spice flowing
169 $not_blank = ("$e" ne '') ? 1 : 0;
172 # not blessed yet failed the 'ne'... this makes 0 sense...
181 sub modver_gt_or_eq ($$) {
182 my ($mod, $ver) = @_;
184 croak "Nonsensical module name supplied"
185 if ! defined $mod or ! length $mod;
187 croak "Nonsensical minimum version supplied"
188 if ! defined $ver or $ver =~ /[^0-9\.\_]/;
190 local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ )
191 if SPURIOUS_VERSION_CHECK_WARNINGS;
193 croak "$mod does not seem to provide a version (perhaps it never loaded)"
194 unless $mod->VERSION;
197 eval { $mod->VERSION($ver) } ? 1 : 0;
201 my $list_ctx_ok_stack_marker;
203 sub fail_on_internal_wantarray () {
204 return if $list_ctx_ok_stack_marker;
206 if (! defined wantarray) {
207 croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard');
211 while ( ( (caller($cf+1))[3] || '' ) =~ / :: (?:
213 # these are public API parts that alter behavior on wantarray
214 search | search_related | slice | search_literal
218 # these are explicitly prefixed, since we only recognize them as valid
219 # escapes when they come from the guts of CDBICompat
220 CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all )
226 my ($fr, $want, $argdesc);
229 $fr = [ caller($cf) ];
230 $want = ( caller($cf-1) )[5];
231 $argdesc = ref $DB::args[0]
232 ? DBIx::Class::_Util::refdesc($DB::args[0])
238 $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
240 DBIx::Class::Exception->throw( sprintf (
241 "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts",
242 $argdesc, @{$fr}[1,2]
243 ), 'with_stacktrace');
247 weaken ( $list_ctx_ok_stack_marker = $mark );
252 sub fail_on_internal_call {
257 $argdesc = ref $DB::args[0]
258 ? DBIx::Class::_Util::refdesc($DB::args[0])
266 $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
268 $fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there
270 DBIx::Class::Exception->throw( sprintf (
271 "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",
272 $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do {
275 B::Deparse->new->coderef2text(\&{$fr->[3]})
277 ), 'with_stacktrace');