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1 | package Moo::_Utils; |
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2 | |
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3 | sub _getglob { \*{$_[0]} } |
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4 | sub _getstash { \%{"$_[0]::"} } |
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5 | |
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6 | BEGIN { |
7 | *lt_5_8_3 = $] < 5.008003 |
8 | ? sub () { 1 } |
9 | : sub () { 0 } |
10 | ; |
11 | } |
12 | |
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13 | use strictures 1; |
14 | use base qw(Exporter); |
15 | |
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16 | our @EXPORT = qw(_getglob _install_modifier _load_module _maybe_load_module); |
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17 | |
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18 | sub _install_modifier { |
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19 | my ($into, $type, $name, $code) = @_; |
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20 | |
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21 | if (my $to_modify = $into->can($name)) { # CMM will throw for us if not |
22 | require Sub::Defer; |
23 | Sub::Defer::undefer_sub($to_modify); |
24 | } |
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25 | |
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26 | Class::Method::Modifiers::install_modifier(@_); |
27 | } |
28 | |
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29 | our %MAYBE_LOADED; |
30 | |
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31 | # _load_module is inlined in Role::Tiny - make sure to copy if you update it. |
32 | |
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33 | sub _load_module { |
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34 | (my $proto = $_[0]) =~ s/::/\//g; |
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35 | return 1 if $INC{"${proto}.pm"}; |
36 | # can't just ->can('can') because a sub-package Foo::Bar::Baz |
37 | # creates a 'Baz::' key in Foo::Bar's symbol table |
38 | return 1 if grep !/::$/, keys %{_getstash($_[0])||{}}; |
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39 | require "${proto}.pm"; |
40 | return 1; |
41 | } |
42 | |
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43 | sub _maybe_load_module { |
44 | return $MAYBE_LOADED{$_[0]} if exists $MAYBE_LOADED{$_[0]}; |
45 | (my $proto = $_[0]) =~ s/::/\//g; |
46 | if (eval { require "${proto}.pm"; 1 }) { |
47 | $MAYBE_LOADED{$_[0]} = 1; |
48 | } else { |
49 | if (exists $INC{"${proto}.pm"}) { |
50 | warn "$_[0] exists but failed to load with error: $@"; |
51 | } |
52 | $MAYBE_LOADED{$_[0]} = 0; |
53 | } |
54 | return $MAYBE_LOADED{$_[0]}; |
55 | } |
56 | |
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57 | 1; |