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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 => ($] < 5.010 ? 1 : 0); |
8 | |
9 | use Carp; |
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10 | use Scalar::Util qw(refaddr weaken); |
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11 | |
12 | use base 'Exporter'; |
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13 | our @EXPORT_OK = qw(modver_gt_or_eq fail_on_internal_wantarray); |
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14 | |
15 | sub modver_gt_or_eq { |
16 | my ($mod, $ver) = @_; |
17 | |
18 | croak "Nonsensical module name supplied" |
19 | if ! defined $mod or ! length $mod; |
20 | |
21 | croak "Nonsensical minimum version supplied" |
22 | if ! defined $ver or $ver =~ /[^0-9\.\_]/; |
23 | |
24 | local $SIG{__WARN__} = do { |
25 | my $orig_sig_warn = $SIG{__WARN__} || sub { warn @_ }; |
26 | sub { |
27 | $orig_sig_warn->(@_) unless $_[0] =~ /\Qisn't numeric in subroutine entry/ |
28 | } |
29 | } if SPURIOUS_VERSION_CHECK_WARNINGS; |
30 | |
31 | local $@; |
32 | eval { $mod->VERSION($ver) } ? 1 : 0; |
33 | } |
34 | |
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35 | { |
36 | my $list_ctx_ok_stack_marker; |
37 | |
38 | sub fail_on_internal_wantarray { |
39 | return if $list_ctx_ok_stack_marker; |
40 | |
41 | if (! defined wantarray) { |
42 | croak('fail_on_internal_wantarray() needs a tempvar to save the stack marker guard'); |
43 | } |
44 | |
45 | my $cf = 1; |
46 | while ( ( (caller($cf+1))[3] || '' ) =~ / :: (?: |
47 | |
48 | # these are public API parts that alter behavior on wantarray |
49 | search | search_related | slice | search_literal |
50 | |
51 | | |
52 | |
53 | # these are explicitly prefixed, since we only recognize them as valid |
54 | # escapes when they come from the guts of CDBICompat |
55 | CDBICompat .*? :: (?: search_where | retrieve_from_sql | retrieve_all ) |
56 | |
57 | ) $/x ) { |
58 | $cf++; |
59 | } |
60 | |
61 | if ( |
62 | (caller($cf))[0] =~ /^(?:DBIx::Class|DBICx::)/ |
63 | ) { |
64 | my $obj = shift; |
65 | |
66 | DBIx::Class::Exception->throw( sprintf ( |
67 | "Improper use of %s(0x%x) instance in list context at %s line %d\n\n\tStacktrace starts", |
68 | ref($obj), refaddr($obj), (caller($cf))[1,2] |
69 | ), 'with_stacktrace'); |
70 | } |
71 | |
72 | my $mark = []; |
73 | weaken ( $list_ctx_ok_stack_marker = $mark ); |
74 | $mark; |
75 | } |
76 | } |
77 | |
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78 | 1; |