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b1dbf716 |
1 | package # hide from PAUSE |
2 | DBIx::Class::_Util; |
3 | |
4 | use warnings; |
5 | use strict; |
6 | |
d0435d75 |
7 | # Temporary - tempextlib |
8 | use namespace::clean; |
9 | BEGIN { |
10 | require Module::Runtime; |
11 | require File::Spec; |
12 | |
13 | # There can be only one of these, make sure we get the bundled part and |
14 | # *not* something off the site lib |
15 | for (qw( |
16 | DBIx::Class::SQLMaker |
17 | SQL::Abstract |
18 | SQL::Abstract::Test |
19 | )) { |
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 $_\n\n" |
24 | ; |
25 | } |
26 | } |
27 | |
28 | our ($HERE) = File::Spec->rel2abs( |
29 | File::Spec->catdir( (File::Spec->splitpath(__FILE__))[1], '_TempExtlib' ) |
30 | ) =~ /^(.*)$/; # screw you, taint mode |
31 | |
32 | unshift @INC, $HERE; |
33 | } |
34 | |
b1dbf716 |
35 | use constant SPURIOUS_VERSION_CHECK_WARNINGS => ($] < 5.010 ? 1 : 0); |
36 | |
37873f78 |
37 | BEGIN { |
38 | package # hide from pause |
39 | DBIx::Class::_ENV_; |
40 | |
41 | use Config; |
42 | |
43 | use constant { |
44 | |
45 | # but of course |
46 | BROKEN_FORK => ($^O eq 'MSWin32') ? 1 : 0, |
47 | |
8d73fcd4 |
48 | BROKEN_GOTO => ($] < '5.008003') ? 1 : 0, |
49 | |
37873f78 |
50 | HAS_ITHREADS => $Config{useithreads} ? 1 : 0, |
51 | |
52 | # ::Runmode would only be loaded by DBICTest, which in turn implies t/ |
53 | DBICTEST => eval { DBICTest::RunMode->is_author } ? 1 : 0, |
54 | |
55 | # During 5.13 dev cycle HELEMs started to leak on copy |
6cfb1d2f |
56 | # add an escape for these perls ON SMOKERS - a user will still get death |
57 | PEEPEENESS => ( eval { DBICTest::RunMode->is_smoker } && ($] >= 5.013005 and $] <= 5.013006) ), |
37873f78 |
58 | |
1b658919 |
59 | SHUFFLE_UNORDERED_RESULTSETS => $ENV{DBIC_SHUFFLE_UNORDERED_RESULTSETS} ? 1 : 0, |
60 | |
37873f78 |
61 | ASSERT_NO_INTERNAL_WANTARRAY => $ENV{DBIC_ASSERT_NO_INTERNAL_WANTARRAY} ? 1 : 0, |
62 | |
77c3a5dc |
63 | ASSERT_NO_INTERNAL_INDIRECT_CALLS => $ENV{DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS} ? 1 : 0, |
64 | |
37873f78 |
65 | IV_SIZE => $Config{ivsize}, |
00882d2c |
66 | |
67 | OS_NAME => $^O, |
37873f78 |
68 | }; |
69 | |
70 | if ($] < 5.009_005) { |
71 | require MRO::Compat; |
72 | constant->import( OLD_MRO => 1 ); |
73 | } |
74 | else { |
75 | require mro; |
76 | constant->import( OLD_MRO => 0 ); |
77 | } |
78 | } |
79 | |
841efcb3 |
80 | # FIXME - this is not supposed to be here |
81 | # Carp::Skip to the rescue soon |
82 | use DBIx::Class::Carp '^DBIx::Class|^DBICTest'; |
83 | |
84 | use Carp 'croak'; |
bf302897 |
85 | use Scalar::Util qw(weaken blessed reftype); |
3705e3b2 |
86 | use List::Util qw(first); |
b1dbf716 |
87 | |
7f9a3f70 |
88 | # DO NOT edit away without talking to riba first, he will just put it back |
89 | # BEGIN pre-Moo2 import block |
90 | BEGIN { |
91 | my $initial_fatal_bits = (${^WARNING_BITS}||'') & $warnings::DeadBits{all}; |
92 | local $ENV{PERL_STRICTURES_EXTRA} = 0; |
93 | require Sub::Quote; Sub::Quote->import('quote_sub'); |
94 | ${^WARNING_BITS} &= ( $initial_fatal_bits | ~ $warnings::DeadBits{all} ); |
95 | } |
96 | sub qsub ($) { goto "e_sub } # no point depping on new Moo just for this |
97 | # END pre-Moo2 import block |
98 | |
b1dbf716 |
99 | use base 'Exporter'; |
3705e3b2 |
100 | our @EXPORT_OK = qw( |
77c3a5dc |
101 | sigwarn_silencer modver_gt_or_eq |
102 | fail_on_internal_wantarray fail_on_internal_call |
8433421f |
103 | refdesc refcount hrefaddr is_exception |
7f9a3f70 |
104 | quote_sub qsub perlstring |
facd0e8e |
105 | UNRESOLVABLE_CONDITION |
3705e3b2 |
106 | ); |
052a832c |
107 | |
facd0e8e |
108 | use constant UNRESOLVABLE_CONDITION => \ '1 = 0'; |
109 | |
bf302897 |
110 | sub sigwarn_silencer ($) { |
052a832c |
111 | my $pattern = shift; |
112 | |
113 | croak "Expecting a regexp" if ref $pattern ne 'Regexp'; |
114 | |
115 | my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) }; |
116 | |
117 | return sub { &$orig_sig_warn unless $_[0] =~ $pattern }; |
118 | } |
b1dbf716 |
119 | |
01b25f12 |
120 | sub perlstring ($) { q{"}. quotemeta( shift ). q{"} }; |
121 | |
8433421f |
122 | sub hrefaddr ($) { sprintf '0x%x', &Scalar::Util::refaddr||0 } |
123 | |
124 | sub refdesc ($) { |
125 | croak "Expecting a reference" if ! length ref $_[0]; |
126 | |
127 | # be careful not to trigger stringification, |
128 | # reuse @_ as a scratch-pad |
129 | sprintf '%s%s(0x%x)', |
130 | ( defined( $_[1] = blessed $_[0]) ? "$_[1]=" : '' ), |
131 | reftype $_[0], |
132 | Scalar::Util::refaddr($_[0]), |
133 | ; |
134 | } |
bf302897 |
135 | |
136 | sub refcount ($) { |
dac7972a |
137 | croak "Expecting a reference" if ! length ref $_[0]; |
138 | |
139 | require B; |
140 | # No tempvars - must operate on $_[0], otherwise the pad |
141 | # will count as an extra ref |
142 | B::svref_2object($_[0])->REFCNT; |
143 | } |
144 | |
841efcb3 |
145 | sub is_exception ($) { |
146 | my $e = $_[0]; |
147 | |
a0414138 |
148 | # this is not strictly correct - an eval setting $@ to undef |
149 | # is *not* the same as an eval setting $@ to '' |
150 | # but for the sake of simplicity assume the following for |
151 | # the time being |
152 | return 0 unless defined $e; |
153 | |
841efcb3 |
154 | my ($not_blank, $suberror); |
155 | { |
156 | local $@; |
157 | eval { |
158 | $not_blank = ($e ne '') ? 1 : 0; |
159 | 1; |
160 | } or $suberror = $@; |
161 | } |
162 | |
163 | if (defined $suberror) { |
164 | if (length (my $class = blessed($e) )) { |
165 | carp_unique( sprintf( |
9bea2000 |
166 | 'External exception class %s implements partial (broken) overloading ' |
167 | . 'preventing its instances from being used in simple ($x eq $y) ' |
841efcb3 |
168 | . 'comparisons. Given Perl\'s "globally cooperative" exception ' |
169 | . 'handling this type of brokenness is extremely dangerous on ' |
170 | . 'exception objects, as it may (and often does) result in silent ' |
171 | . '"exception substitution". DBIx::Class tries to work around this ' |
172 | . 'as much as possible, but other parts of your software stack may ' |
173 | . 'not be even aware of this. Please submit a bugreport against the ' |
174 | . 'distribution containing %s and in the meantime apply a fix similar ' |
175 | . 'to the one shown at %s, in order to ensure your exception handling ' |
176 | . 'is saner application-wide. What follows is the actual error text ' |
177 | . "as generated by Perl itself:\n\n%s\n ", |
9bea2000 |
178 | $class, |
841efcb3 |
179 | $class, |
180 | 'http://v.gd/DBIC_overload_tempfix/', |
181 | $suberror, |
182 | )); |
183 | |
184 | # workaround, keeps spice flowing |
185 | $not_blank = ("$e" ne '') ? 1 : 0; |
186 | } |
187 | else { |
188 | # not blessed yet failed the 'ne'... this makes 0 sense... |
189 | # just throw further |
190 | die $suberror |
191 | } |
192 | } |
193 | |
194 | return $not_blank; |
195 | } |
196 | |
bf302897 |
197 | sub modver_gt_or_eq ($$) { |
b1dbf716 |
198 | my ($mod, $ver) = @_; |
199 | |
200 | croak "Nonsensical module name supplied" |
201 | if ! defined $mod or ! length $mod; |
202 | |
203 | croak "Nonsensical minimum version supplied" |
204 | if ! defined $ver or $ver =~ /[^0-9\.\_]/; |
205 | |
052a832c |
206 | local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ ) |
207 | if SPURIOUS_VERSION_CHECK_WARNINGS; |
b1dbf716 |
208 | |
56270bba |
209 | croak "$mod does not seem to provide a version (perhaps it never loaded)" |
210 | unless $mod->VERSION; |
211 | |
b1dbf716 |
212 | local $@; |
213 | eval { $mod->VERSION($ver) } ? 1 : 0; |
214 | } |
215 | |
a9da9b6a |
216 | { |
217 | my $list_ctx_ok_stack_marker; |
218 | |
e89c7968 |
219 | sub fail_on_internal_wantarray () { |
a9da9b6a |
220 | return if $list_ctx_ok_stack_marker; |
221 | |
222 | if (! defined wantarray) { |
223 | croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard'); |
224 | } |
225 | |
226 | my $cf = 1; |
227 | while ( ( (caller($cf+1))[3] || '' ) =~ / :: (?: |
228 | |
229 | # these are public API parts that alter behavior on wantarray |
230 | search | search_related | slice | search_literal |
231 | |
232 | | |
233 | |
234 | # these are explicitly prefixed, since we only recognize them as valid |
235 | # escapes when they come from the guts of CDBICompat |
236 | CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all ) |
237 | |
238 | ) $/x ) { |
239 | $cf++; |
240 | } |
241 | |
e89c7968 |
242 | my ($fr, $want, $argdesc); |
243 | { |
244 | package DB; |
245 | $fr = [ caller($cf) ]; |
246 | $want = ( caller($cf-1) )[5]; |
247 | $argdesc = ref $DB::args[0] |
248 | ? DBIx::Class::_Util::refdesc($DB::args[0]) |
249 | : 'non ' |
250 | ; |
251 | }; |
252 | |
a9da9b6a |
253 | if ( |
e89c7968 |
254 | $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/ |
a9da9b6a |
255 | ) { |
a9da9b6a |
256 | DBIx::Class::Exception->throw( sprintf ( |
e89c7968 |
257 | "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts", |
258 | $argdesc, @{$fr}[1,2] |
a9da9b6a |
259 | ), 'with_stacktrace'); |
260 | } |
261 | |
262 | my $mark = []; |
263 | weaken ( $list_ctx_ok_stack_marker = $mark ); |
264 | $mark; |
265 | } |
266 | } |
267 | |
77c3a5dc |
268 | sub fail_on_internal_call { |
269 | my ($fr, $argdesc); |
270 | { |
271 | package DB; |
272 | $fr = [ caller(1) ]; |
273 | $argdesc = ref $DB::args[0] |
274 | ? DBIx::Class::_Util::refdesc($DB::args[0]) |
275 | : undef |
276 | ; |
277 | }; |
278 | |
279 | if ( |
280 | $argdesc |
281 | and |
282 | $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/ |
283 | and |
284 | $fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there |
285 | ) { |
286 | DBIx::Class::Exception->throw( sprintf ( |
287 | "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", |
288 | $fr->[3], $argdesc, @{$fr}[1,2], ( $fr->[6] || do { |
289 | require B::Deparse; |
290 | no strict 'refs'; |
291 | B::Deparse->new->coderef2text(\&{$fr->[3]}) |
292 | }), |
293 | ), 'with_stacktrace'); |
294 | } |
295 | } |
296 | |
b1dbf716 |
297 | 1; |