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b1dbf716 |
1 | package # hide from PAUSE |
2 | DBIx::Class::_Util; |
3 | |
4 | use warnings; |
5 | use strict; |
6 | |
7 | use constant SPURIOUS_VERSION_CHECK_WARNINGS => ($] < 5.010 ? 1 : 0); |
8 | |
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9 | BEGIN { |
10 | package # hide from pause |
11 | DBIx::Class::_ENV_; |
12 | |
13 | use Config; |
14 | |
15 | use constant { |
16 | |
17 | # but of course |
18 | BROKEN_FORK => ($^O eq 'MSWin32') ? 1 : 0, |
19 | |
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20 | BROKEN_GOTO => ($] < '5.008003') ? 1 : 0, |
21 | |
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22 | HAS_ITHREADS => $Config{useithreads} ? 1 : 0, |
23 | |
24 | # ::Runmode would only be loaded by DBICTest, which in turn implies t/ |
25 | DBICTEST => eval { DBICTest::RunMode->is_author } ? 1 : 0, |
26 | |
27 | # During 5.13 dev cycle HELEMs started to leak on copy |
6cfb1d2f |
28 | # add an escape for these perls ON SMOKERS - a user will still get death |
29 | PEEPEENESS => ( eval { DBICTest::RunMode->is_smoker } && ($] >= 5.013005 and $] <= 5.013006) ), |
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30 | |
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31 | SHUFFLE_UNORDERED_RESULTSETS => $ENV{DBIC_SHUFFLE_UNORDERED_RESULTSETS} ? 1 : 0, |
32 | |
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33 | ASSERT_NO_INTERNAL_WANTARRAY => $ENV{DBIC_ASSERT_NO_INTERNAL_WANTARRAY} ? 1 : 0, |
34 | |
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35 | ASSERT_NO_INTERNAL_INDIRECT_CALLS => $ENV{DBIC_ASSERT_NO_INTERNAL_INDIRECT_CALLS} ? 1 : 0, |
36 | |
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37 | STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE => $ENV{DBIC_STRESSTEST_UTF8_UPGRADE_GENERATED_COLLAPSER_SOURCE} ? 1 : 0, |
38 | |
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39 | STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE => $ENV{DBIC_STRESSTEST_COLUMN_INFO_UNAWARE_STORAGE} ? 1 : 0, |
40 | |
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41 | IV_SIZE => $Config{ivsize}, |
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42 | |
43 | OS_NAME => $^O, |
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44 | }; |
45 | |
46 | if ($] < 5.009_005) { |
47 | require MRO::Compat; |
48 | constant->import( OLD_MRO => 1 ); |
49 | } |
50 | else { |
51 | require mro; |
52 | constant->import( OLD_MRO => 0 ); |
53 | } |
54 | } |
55 | |
841efcb3 |
56 | # FIXME - this is not supposed to be here |
57 | # Carp::Skip to the rescue soon |
58 | use DBIx::Class::Carp '^DBIx::Class|^DBICTest'; |
59 | |
d7d45bdc |
60 | use B (); |
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61 | use Carp 'croak'; |
d7d45bdc |
62 | use Storable 'nfreeze'; |
bf302897 |
63 | use Scalar::Util qw(weaken blessed reftype); |
3705e3b2 |
64 | use List::Util qw(first); |
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65 | |
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66 | # DO NOT edit away without talking to riba first, he will just put it back |
67 | # BEGIN pre-Moo2 import block |
68 | BEGIN { |
69 | my $initial_fatal_bits = (${^WARNING_BITS}||'') & $warnings::DeadBits{all}; |
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70 | |
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71 | local $ENV{PERL_STRICTURES_EXTRA} = 0; |
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72 | # load all of these now, so that lazy-loading does not escape |
73 | # the current PERL_STRICTURES_EXTRA setting |
74 | require Sub::Quote; |
75 | require Sub::Defer; |
76 | |
77 | Sub::Quote->import('quote_sub'); |
7f9a3f70 |
78 | ${^WARNING_BITS} &= ( $initial_fatal_bits | ~ $warnings::DeadBits{all} ); |
79 | } |
80 | sub qsub ($) { goto "e_sub } # no point depping on new Moo just for this |
81 | # END pre-Moo2 import block |
82 | |
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83 | # Already correctly prototyped: perlbrew exec perl -MStorable -e 'warn prototype \&Storable::dclone' |
84 | BEGIN { *deep_clone = \&Storable::dclone } |
85 | |
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86 | use base 'Exporter'; |
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87 | our @EXPORT_OK = qw( |
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88 | sigwarn_silencer modver_gt_or_eq modver_gt_or_eq_and_lt |
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89 | fail_on_internal_wantarray fail_on_internal_call |
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90 | refdesc refcount hrefaddr is_exception |
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91 | quote_sub qsub perlstring serialize deep_clone |
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92 | UNRESOLVABLE_CONDITION |
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93 | ); |
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94 | |
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95 | use constant UNRESOLVABLE_CONDITION => \ '1 = 0'; |
96 | |
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97 | sub sigwarn_silencer ($) { |
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98 | my $pattern = shift; |
99 | |
100 | croak "Expecting a regexp" if ref $pattern ne 'Regexp'; |
101 | |
102 | my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) }; |
103 | |
104 | return sub { &$orig_sig_warn unless $_[0] =~ $pattern }; |
105 | } |
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106 | |
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107 | sub perlstring ($) { q{"}. quotemeta( shift ). q{"} }; |
108 | |
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109 | sub hrefaddr ($) { sprintf '0x%x', &Scalar::Util::refaddr||0 } |
110 | |
111 | sub refdesc ($) { |
112 | croak "Expecting a reference" if ! length ref $_[0]; |
113 | |
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]=" : '' ), |
118 | reftype $_[0], |
119 | Scalar::Util::refaddr($_[0]), |
120 | ; |
121 | } |
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122 | |
123 | sub refcount ($) { |
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124 | croak "Expecting a reference" if ! length ref $_[0]; |
125 | |
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126 | # No tempvars - must operate on $_[0], otherwise the pad |
127 | # will count as an extra ref |
128 | B::svref_2object($_[0])->REFCNT; |
129 | } |
130 | |
b34d9331 |
131 | sub serialize ($) { |
b34d9331 |
132 | local $Storable::canonical = 1; |
d7d45bdc |
133 | nfreeze($_[0]); |
b34d9331 |
134 | } |
135 | |
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136 | sub is_exception ($) { |
137 | my $e = $_[0]; |
138 | |
a0414138 |
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 |
142 | # the time being |
143 | return 0 unless defined $e; |
144 | |
841efcb3 |
145 | my ($not_blank, $suberror); |
146 | { |
147 | local $@; |
148 | eval { |
149 | $not_blank = ($e ne '') ? 1 : 0; |
150 | 1; |
151 | } or $suberror = $@; |
152 | } |
153 | |
154 | if (defined $suberror) { |
155 | if (length (my $class = blessed($e) )) { |
156 | carp_unique( sprintf( |
9bea2000 |
157 | 'External exception class %s implements partial (broken) overloading ' |
158 | . 'preventing its instances from being used in simple ($x eq $y) ' |
841efcb3 |
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 ", |
9bea2000 |
169 | $class, |
841efcb3 |
170 | $class, |
171 | 'http://v.gd/DBIC_overload_tempfix/', |
172 | $suberror, |
173 | )); |
174 | |
175 | # workaround, keeps spice flowing |
176 | $not_blank = ("$e" ne '') ? 1 : 0; |
177 | } |
178 | else { |
179 | # not blessed yet failed the 'ne'... this makes 0 sense... |
180 | # just throw further |
181 | die $suberror |
182 | } |
183 | } |
184 | |
185 | return $not_blank; |
186 | } |
187 | |
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188 | sub modver_gt_or_eq ($$) { |
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189 | my ($mod, $ver) = @_; |
190 | |
191 | croak "Nonsensical module name supplied" |
192 | if ! defined $mod or ! length $mod; |
193 | |
194 | croak "Nonsensical minimum version supplied" |
195 | if ! defined $ver or $ver =~ /[^0-9\.\_]/; |
196 | |
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197 | local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ ) |
198 | if SPURIOUS_VERSION_CHECK_WARNINGS; |
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199 | |
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200 | croak "$mod does not seem to provide a version (perhaps it never loaded)" |
201 | unless $mod->VERSION; |
202 | |
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203 | local $@; |
204 | eval { $mod->VERSION($ver) } ? 1 : 0; |
205 | } |
206 | |
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207 | sub modver_gt_or_eq_and_lt ($$$) { |
208 | my ($mod, $v_ge, $v_lt) = @_; |
209 | |
210 | croak "Nonsensical maximum version supplied" |
211 | if ! defined $v_lt or $v_lt =~ /[^0-9\.\_]/; |
212 | |
213 | return ( |
214 | modver_gt_or_eq($mod, $v_ge) |
215 | and |
216 | ! modver_gt_or_eq($mod, $v_lt) |
217 | ) ? 1 : 0; |
218 | } |
219 | |
a9da9b6a |
220 | { |
221 | my $list_ctx_ok_stack_marker; |
222 | |
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223 | sub fail_on_internal_wantarray () { |
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224 | return if $list_ctx_ok_stack_marker; |
225 | |
226 | if (! defined wantarray) { |
227 | croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard'); |
228 | } |
229 | |
230 | my $cf = 1; |
231 | while ( ( (caller($cf+1))[3] || '' ) =~ / :: (?: |
232 | |
233 | # these are public API parts that alter behavior on wantarray |
234 | search | search_related | slice | search_literal |
235 | |
236 | | |
237 | |
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 ) |
241 | |
242 | ) $/x ) { |
243 | $cf++; |
244 | } |
245 | |
e89c7968 |
246 | my ($fr, $want, $argdesc); |
247 | { |
248 | package DB; |
249 | $fr = [ caller($cf) ]; |
250 | $want = ( caller($cf-1) )[5]; |
251 | $argdesc = ref $DB::args[0] |
252 | ? DBIx::Class::_Util::refdesc($DB::args[0]) |
253 | : 'non ' |
254 | ; |
255 | }; |
256 | |
a9da9b6a |
257 | if ( |
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258 | $want and $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/ |
a9da9b6a |
259 | ) { |
a9da9b6a |
260 | DBIx::Class::Exception->throw( sprintf ( |
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261 | "Improper use of %s instance in list context at %s line %d\n\n Stacktrace starts", |
262 | $argdesc, @{$fr}[1,2] |
a9da9b6a |
263 | ), 'with_stacktrace'); |
264 | } |
265 | |
266 | my $mark = []; |
267 | weaken ( $list_ctx_ok_stack_marker = $mark ); |
268 | $mark; |
269 | } |
270 | } |
271 | |
77c3a5dc |
272 | sub fail_on_internal_call { |
273 | my ($fr, $argdesc); |
274 | { |
275 | package DB; |
276 | $fr = [ caller(1) ]; |
277 | $argdesc = ref $DB::args[0] |
278 | ? DBIx::Class::_Util::refdesc($DB::args[0]) |
279 | : undef |
280 | ; |
281 | }; |
282 | |
283 | if ( |
284 | $argdesc |
285 | and |
286 | $fr->[0] =~ /^(?:DBIx::Class|DBICx::)/ |
287 | and |
288 | $fr->[1] !~ /\b(?:CDBICompat|ResultSetProxy)\b/ # no point touching there |
289 | ) { |
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], ( $fr->[6] || do { |
293 | require B::Deparse; |
294 | no strict 'refs'; |
295 | B::Deparse->new->coderef2text(\&{$fr->[3]}) |
296 | }), |
297 | ), 'with_stacktrace'); |
298 | } |
299 | } |
300 | |
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301 | 1; |