1 package # hide from PAUSE
7 # Temporary - tempextlib
10 require Module::Runtime;
13 # There can be only one of these, make sure we get the bundled part and
14 # *not* something off the site lib
20 if ($INC{Module::Runtime::module_notional_filename($_)}) {
21 die "\nUnable to continue - a part of the bundled templib contents "
22 . "was already loaded (likely an older version from CPAN). "
23 . "Make sure that @{[ __PACKAGE__ ]} is loaded before $_\n\n"
28 our ($HERE) = File::Spec->rel2abs(
29 File::Spec->catdir( (File::Spec->splitpath(__FILE__))[1], '_TempExtlib' )
30 ) =~ /^(.*)$/; # screw you, taint mode
32 die "TempExtlib $HERE does not seem to exist - perhaps you need to run `perl Makefile.PL` in the DBIC checkout?\n"
38 use constant SPURIOUS_VERSION_CHECK_WARNINGS => ($] < 5.010 ? 1 : 0);
41 package # hide from pause
49 BROKEN_FORK => ($^O eq 'MSWin32') ? 1 : 0,
51 BROKEN_GOTO => ($] < '5.008003') ? 1 : 0,
53 HAS_ITHREADS => $Config{useithreads} ? 1 : 0,
55 # ::Runmode would only be loaded by DBICTest, which in turn implies t/
56 DBICTEST => eval { DBICTest::RunMode->is_author } ? 1 : 0,
58 # During 5.13 dev cycle HELEMs started to leak on copy
59 # add an escape for these perls ON SMOKERS - a user will still get death
60 PEEPEENESS => ( eval { DBICTest::RunMode->is_smoker } && ($] >= 5.013005 and $] <= 5.013006) ),
62 SHUFFLE_UNORDERED_RESULTSETS => $ENV{DBIC_SHUFFLE_UNORDERED_RESULTSETS} ? 1 : 0,
64 ASSERT_NO_INTERNAL_WANTARRAY => $ENV{DBIC_ASSERT_NO_INTERNAL_WANTARRAY} ? 1 : 0,
66 ASSERT_NO_INTERNAL_INDIRECT_CALLS => $ENV{DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS} ? 1 : 0,
68 IV_SIZE => $Config{ivsize},
75 constant->import( OLD_MRO => 1 );
79 constant->import( OLD_MRO => 0 );
83 # FIXME - this is not supposed to be here
84 # Carp::Skip to the rescue soon
85 use DBIx::Class::Carp '^DBIx::Class|^DBICTest';
88 use Scalar::Util qw(weaken blessed reftype);
89 use List::Util qw(first);
91 # DO NOT edit away without talking to riba first, he will just put it back
92 # BEGIN pre-Moo2 import block
94 my $initial_fatal_bits = (${^WARNING_BITS}||'') & $warnings::DeadBits{all};
96 local $ENV{PERL_STRICTURES_EXTRA} = 0;
97 # load all of these now, so that lazy-loading does not escape
98 # the current PERL_STRICTURES_EXTRA setting
102 Sub::Quote->import('quote_sub');
103 ${^WARNING_BITS} &= ( $initial_fatal_bits | ~ $warnings::DeadBits{all} );
105 sub qsub ($) { goto "e_sub } # no point depping on new Moo just for this
106 # END pre-Moo2 import block
110 sigwarn_silencer modver_gt_or_eq
111 fail_on_internal_wantarray fail_on_internal_call
112 refdesc refcount hrefaddr is_exception
113 quote_sub qsub perlstring serialize
114 UNRESOLVABLE_CONDITION
117 use constant UNRESOLVABLE_CONDITION => \ '1 = 0';
119 sub sigwarn_silencer ($) {
122 croak "Expecting a regexp" if ref $pattern ne 'Regexp';
124 my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) };
126 return sub { &$orig_sig_warn unless $_[0] =~ $pattern };
129 sub perlstring ($) { q{"}. quotemeta( shift ). q{"} };
131 sub hrefaddr ($) { sprintf '0x%x', &Scalar::Util::refaddr||0 }
134 croak "Expecting a reference" if ! length ref $_[0];
136 # be careful not to trigger stringification,
137 # reuse @_ as a scratch-pad
138 sprintf '%s%s(0x%x)',
139 ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ),
141 Scalar::Util::refaddr($_[0]),
146 croak "Expecting a reference" if ! length ref $_[0];
149 # No tempvars - must operate on $_[0], otherwise the pad
150 # will count as an extra ref
151 B::svref_2object($_[0])->REFCNT;
156 local $Storable::canonical = 1;
157 Storable::nfreeze($_[0]);
160 sub is_exception ($) {
163 # this is not strictly correct - an eval setting $@ to undef
164 # is *not* the same as an eval setting $@ to ''
165 # but for the sake of simplicity assume the following for
167 return 0 unless defined $e;
169 my ($not_blank, $suberror);
173 $not_blank = ($e ne '') ? 1 : 0;
178 if (defined $suberror) {
179 if (length (my $class = blessed($e) )) {
180 carp_unique( sprintf(
181 'External exception class %s implements partial (broken) overloading '
182 . 'preventing its instances from being used in simple ($x eq $y) '
183 . 'comparisons. Given Perl\'s "globally cooperative" exception '
184 . 'handling this type of brokenness is extremely dangerous on '
185 . 'exception objects, as it may (and often does) result in silent '
186 . '"exception substitution". DBIx::Class tries to work around this '
187 . 'as much as possible, but other parts of your software stack may '
188 . 'not be even aware of this. Please submit a bugreport against the '
189 . 'distribution containing %s and in the meantime apply a fix similar '
190 . 'to the one shown at %s, in order to ensure your exception handling '
191 . 'is saner application-wide. What follows is the actual error text '
192 . "as generated by Perl itself:\n\n%s\n ",
195 'http://v.gd/DBIC_overload_tempfix/',
199 # workaround, keeps spice flowing
200 $not_blank = ("$e" ne '') ? 1 : 0;
203 # not blessed yet failed the 'ne'... this makes 0 sense...
212 sub modver_gt_or_eq ($$) {
213 my ($mod, $ver) = @_;
215 croak "Nonsensical module name supplied"
216 if ! defined $mod or ! length $mod;
218 croak "Nonsensical minimum version supplied"
219 if ! defined $ver or $ver =~ /[^0-9\.\_]/;
221 local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ )
222 if SPURIOUS_VERSION_CHECK_WARNINGS;
224 croak "$mod does not seem to provide a version (perhaps it never loaded)"
225 unless $mod->VERSION;
228 eval { $mod->VERSION($ver) } ? 1 : 0;
232 my $list_ctx_ok_stack_marker;
234 sub fail_on_internal_wantarray () {
235 return if $list_ctx_ok_stack_marker;
237 if (! defined wantarray) {
238 croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard');
242 while ( ( (caller($cf+1))[3] || '' ) =~ / :: (?:
244 # these are public API parts that alter behavior on wantarray
245 search | search_related | slice | search_literal
249 # these are explicitly prefixed, since we only recognize them as valid
250 # escapes when they come from the guts of CDBICompat
251 CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all )
257 my ($fr, $want, $argdesc);
260 $fr = [ caller($cf) ];
261 $want = ( caller($cf-1) )[5];
262 $argdesc = ref $DB::args[0]
263 ? DBIx::Class::_Util::refdesc($DB::args[0])
269 $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
271 DBIx::Class::Exception->throw( sprintf (
272 "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts",
273 $argdesc, @{$fr}[1,2]
274 ), 'with_stacktrace');
278 weaken ( $list_ctx_ok_stack_marker = $mark );
283 sub fail_on_internal_call {
288 $argdesc = ref $DB::args[0]
289 ? DBIx::Class::_Util::refdesc($DB::args[0])
297 $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/
299 $fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there
301 DBIx::Class::Exception->throw( sprintf (
302 "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",
303 $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do {
306 B::Deparse->new->coderef2text(\&{$fr->[3]})
308 ), 'with_stacktrace');