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 HAS_ITHREADS => $Config{useithreads} ? 1 : 0,
22 # ::Runmode would only be loaded by DBICTest, which in turn implies t/
23 DBICTEST => eval { DBICTest::RunMode->is_author } ? 1 : 0,
25 # During 5.13 dev cycle HELEMs started to leak on copy
26 # add an escape for these perls ON SMOKERS - a user will still get death
27 PEEPEENESS => ( eval { DBICTest::RunMode->is_smoker } && ($] >= 5.013005 and $] <= 5.013006) ),
29 SHUFFLE_UNORDERED_RESULTSETS => $ENV{DBIC_SHUFFLE_UNORDERED_RESULTSETS} ? 1 : 0,
31 ASSERT_NO_INTERNAL_WANTARRAY => $ENV{DBIC_ASSERT_NO_INTERNAL_WANTARRAY} ? 1 : 0,
33 ASSERT_NO_INTERNAL_INDIRECT_CALLS => $ENV{DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS} ? 1 : 0,
35 IV_SIZE => $Config{ivsize},
42 constant->import( OLD_MRO => 1 );
46 constant->import( OLD_MRO => 0 );
50 # FIXME - this is not supposed to be here
51 # Carp::Skip to the rescue soon
52 use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
55 use Scalar::Util qw(weaken blessed reftype);
56 use List::Util qw(first);
60 sigwarn_silencer modver_gt_or_eq
61 fail_on_internal_wantarray fail_on_internal_call
62 refdesc refcount hrefaddr is_exception
63 UNRESOLVABLE_CONDITION
66 use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
68 sub sigwarn_silencer ($) {
71 croak "Expecting a regexp" if ref $pattern ne 'Regexp';
73 my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) };
75 return sub { &$orig_sig_warn unless $_[0] =~ $pattern };
78 sub hrefaddr ($) { sprintf '0x%x', &Scalar::Util::refaddr||0 }
81 croak "Expecting a reference" if ! length ref $_[0];
83 # be careful not to trigger stringification,
84 # reuse @_ as a scratch-pad
86 ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ),
88 Scalar::Util::refaddr($_[0]),
93 croak "Expecting a reference" if ! length ref $_[0];
96 # No tempvars - must operate on $_[0], otherwise the pad
97 # will count as an extra ref
98 B::svref_2object($_[0])->REFCNT;
101 sub is_exception ($) {
104 # this is not strictly correct - an eval setting $@ to undef
105 # is *not* the same as an eval setting $@ to ''
106 # but for the sake of simplicity assume the following for
108 return 0 unless defined $e;
110 my ($not_blank, $suberror);
114 $not_blank = ($e ne '') ? 1 : 0;
119 if (defined $suberror) {
120 if (length (my $class = blessed($e) )) {
121 carp_unique( sprintf(
122 'External exception class %s implements partial (broken) overloading '
123 . 'preventing its instances from being used in simple ($x eq $y) '
124 . 'comparisons. Given Perl\'s "globally cooperative" exception '
125 . 'handling this type of brokenness is extremely dangerous on '
126 . 'exception objects, as it may (and often does) result in silent '
127 . '"exception substitution". DBIx::Class tries to work around this '
128 . 'as much as possible, but other parts of your software stack may '
129 . 'not be even aware of this. Please submit a bugreport against the '
130 . 'distribution containing %s and in the meantime apply a fix similar '
131 . 'to the one shown at %s, in order to ensure your exception handling '
132 . 'is saner application-wide. What follows is the actual error text '
133 . "as generated by Perl itself:\n\n%s\n ",
136 'http://v.gd/DBIC_overload_tempfix/',
140 # workaround, keeps spice flowing
141 $not_blank = ("$e" ne '') ? 1 : 0;
144 # not blessed yet failed the 'ne'... this makes 0 sense...
153 sub modver_gt_or_eq ($$) {
154 my ($mod, $ver) = @_;
156 croak "Nonsensical module name supplied"
157 if ! defined $mod or ! length $mod;
159 croak "Nonsensical minimum version supplied"
160 if ! defined $ver or $ver =~ /[^0-9\.\_]/;
162 local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ )
163 if SPURIOUS_VERSION_CHECK_WARNINGS;
165 croak "$mod does not seem to provide a version (perhaps it never loaded)"
166 unless $mod->VERSION;
169 eval { $mod->VERSION($ver) } ? 1 : 0;
173 my $list_ctx_ok_stack_marker;
175 sub fail_on_internal_wantarray () {
176 return if $list_ctx_ok_stack_marker;
178 if (! defined wantarray) {
179 croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard');
183 while ( ( (caller($cf+1))[3] || '' ) =~ / :: (?:
185 # these are public API parts that alter behavior on wantarray
186 search | search_related | slice | search_literal
190 # these are explicitly prefixed, since we only recognize them as valid
191 # escapes when they come from the guts of CDBICompat
192 CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all )
198 my ($fr, $want, $argdesc);
201 $fr = [ caller($cf) ];
202 $want = ( caller($cf-1) )[5];
203 $argdesc = ref $DB::args[0]
204 ? DBIx::Class::_Util::refdesc($DB::args[0])
210 $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
212 DBIx::Class::Exception->throw( sprintf (
213 "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts",
214 $argdesc, @{$fr}[1,2]
215 ), 'with_stacktrace');
219 weaken ( $list_ctx_ok_stack_marker = $mark );
224 sub fail_on_internal_call {
229 $argdesc = ref $DB::args[0]
230 ? DBIx::Class::_Util::refdesc($DB::args[0])
238 $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
240 $fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there
242 DBIx::Class::Exception->throw( sprintf (
243 "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",
244 $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do {
247 B::Deparse->new->coderef2text(\&{$fr->[3]})
249 ), 'with_stacktrace');