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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 | |
20 | HAS_ITHREADS => $Config{useithreads} ? 1 : 0, |
21 | |
22 | # ::Runmode would only be loaded by DBICTest, which in turn implies t/ |
23 | DBICTEST => eval { DBICTest::RunMode->is_author } ? 1 : 0, |
24 | |
25 | # During 5.13 dev cycle HELEMs started to leak on copy |
26 | PEEPEENESS => |
27 | # request for all tests would force "non-leaky" illusion and vice-versa |
28 | defined $ENV{DBICTEST_ALL_LEAKS} ? !$ENV{DBICTEST_ALL_LEAKS} |
29 | # otherwise confess that this perl is busted ONLY on smokers |
30 | : eval { DBICTest::RunMode->is_smoker } && ($] >= 5.013005 and $] <= 5.013006) ? 1 |
31 | # otherwise we are good |
32 | : 0 |
33 | , |
34 | |
35 | ASSERT_NO_INTERNAL_WANTARRAY => $ENV{DBIC_ASSERT_NO_INTERNAL_WANTARRAY} ? 1 : 0, |
36 | |
37 | IV_SIZE => $Config{ivsize}, |
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38 | |
39 | OS_NAME => $^O, |
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40 | }; |
41 | |
42 | if ($] < 5.009_005) { |
43 | require MRO::Compat; |
44 | constant->import( OLD_MRO => 1 ); |
45 | } |
46 | else { |
47 | require mro; |
48 | constant->import( OLD_MRO => 0 ); |
49 | } |
50 | } |
51 | |
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52 | # FIXME - this is not supposed to be here |
53 | # Carp::Skip to the rescue soon |
54 | use DBIx::Class::Carp '^DBIx::Class|^DBICTest'; |
55 | |
56 | use Carp 'croak'; |
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57 | use Scalar::Util qw(weaken blessed reftype); |
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58 | |
59 | use base 'Exporter'; |
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60 | our @EXPORT_OK = qw(sigwarn_silencer modver_gt_or_eq fail_on_internal_wantarray refcount hrefaddr is_exception); |
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61 | |
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62 | sub sigwarn_silencer ($) { |
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63 | my $pattern = shift; |
64 | |
65 | croak "Expecting a regexp" if ref $pattern ne 'Regexp'; |
66 | |
67 | my $orig_sig_warn = $SIG{__WARN__} || sub { CORE::warn(@_) }; |
68 | |
69 | return sub { &$orig_sig_warn unless $_[0] =~ $pattern }; |
70 | } |
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71 | |
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72 | sub hrefaddr ($) { sprintf '0x%x', &Scalar::Util::refaddr } |
73 | |
74 | sub refcount ($) { |
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75 | croak "Expecting a reference" if ! length ref $_[0]; |
76 | |
77 | require B; |
78 | # No tempvars - must operate on $_[0], otherwise the pad |
79 | # will count as an extra ref |
80 | B::svref_2object($_[0])->REFCNT; |
81 | } |
82 | |
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83 | sub is_exception ($) { |
84 | my $e = $_[0]; |
85 | |
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86 | # this is not strictly correct - an eval setting $@ to undef |
87 | # is *not* the same as an eval setting $@ to '' |
88 | # but for the sake of simplicity assume the following for |
89 | # the time being |
90 | return 0 unless defined $e; |
91 | |
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92 | my ($not_blank, $suberror); |
93 | { |
94 | local $@; |
95 | eval { |
96 | $not_blank = ($e ne '') ? 1 : 0; |
97 | 1; |
98 | } or $suberror = $@; |
99 | } |
100 | |
101 | if (defined $suberror) { |
102 | if (length (my $class = blessed($e) )) { |
103 | carp_unique( sprintf( |
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104 | 'External exception object %s=%s(%s) implements partial (broken) ' |
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105 | . 'overloading preventing it from being used in simple ($x eq $y) ' |
106 | . 'comparisons. Given Perl\'s "globally cooperative" exception ' |
107 | . 'handling this type of brokenness is extremely dangerous on ' |
108 | . 'exception objects, as it may (and often does) result in silent ' |
109 | . '"exception substitution". DBIx::Class tries to work around this ' |
110 | . 'as much as possible, but other parts of your software stack may ' |
111 | . 'not be even aware of this. Please submit a bugreport against the ' |
112 | . 'distribution containing %s and in the meantime apply a fix similar ' |
113 | . 'to the one shown at %s, in order to ensure your exception handling ' |
114 | . 'is saner application-wide. What follows is the actual error text ' |
115 | . "as generated by Perl itself:\n\n%s\n ", |
116 | $class, |
117 | reftype $e, |
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118 | hrefaddr $e, |
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119 | $class, |
120 | 'http://v.gd/DBIC_overload_tempfix/', |
121 | $suberror, |
122 | )); |
123 | |
124 | # workaround, keeps spice flowing |
125 | $not_blank = ("$e" ne '') ? 1 : 0; |
126 | } |
127 | else { |
128 | # not blessed yet failed the 'ne'... this makes 0 sense... |
129 | # just throw further |
130 | die $suberror |
131 | } |
132 | } |
133 | |
134 | return $not_blank; |
135 | } |
136 | |
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137 | sub modver_gt_or_eq ($$) { |
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138 | my ($mod, $ver) = @_; |
139 | |
140 | croak "Nonsensical module name supplied" |
141 | if ! defined $mod or ! length $mod; |
142 | |
143 | croak "Nonsensical minimum version supplied" |
144 | if ! defined $ver or $ver =~ /[^0-9\.\_]/; |
145 | |
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146 | local $SIG{__WARN__} = sigwarn_silencer( qr/\Qisn't numeric in subroutine entry/ ) |
147 | if SPURIOUS_VERSION_CHECK_WARNINGS; |
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148 | |
149 | local $@; |
150 | eval { $mod->VERSION($ver) } ? 1 : 0; |
151 | } |
152 | |
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153 | { |
154 | my $list_ctx_ok_stack_marker; |
155 | |
156 | sub fail_on_internal_wantarray { |
157 | return if $list_ctx_ok_stack_marker; |
158 | |
159 | if (! defined wantarray) { |
160 | croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard'); |
161 | } |
162 | |
163 | my $cf = 1; |
164 | while ( ( (caller($cf+1))[3] || '' ) =~ / :: (?: |
165 | |
166 | # these are public API parts that alter behavior on wantarray |
167 | search | search_related | slice | search_literal |
168 | |
169 | | |
170 | |
171 | # these are explicitly prefixed, since we only recognize them as valid |
172 | # escapes when they come from the guts of CDBICompat |
173 | CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all ) |
174 | |
175 | ) $/x ) { |
176 | $cf++; |
177 | } |
178 | |
179 | if ( |
180 | (caller($cf))[0] =~ /^(?:DBIx::Class|DBICx::)/ |
181 | ) { |
182 | my $obj = shift; |
183 | |
184 | DBIx::Class::Exception->throw( sprintf ( |
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185 | "Improper use of %s(%s) instance in list context at %s line %d\n\n\tStacktrace starts", |
186 | ref($obj), hrefaddr($obj), (caller($cf))[1,2] |
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187 | ), 'with_stacktrace'); |
188 | } |
189 | |
190 | my $mark = []; |
191 | weaken ( $list_ctx_ok_stack_marker = $mark ); |
192 | $mark; |
193 | } |
194 | } |
195 | |
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196 | 1; |