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1 | package Moo::HandleMoose; |
2 | |
3 | use strictures 1; |
4 | use Moo::_Utils; |
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5 | use B qw(perlstring); |
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6 | |
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7 | our %TYPE_MAP; |
8 | |
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9 | our $SETUP_DONE; |
10 | |
11 | sub import { return if $SETUP_DONE; inject_all(); $SETUP_DONE = 1; } |
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12 | |
13 | sub inject_all { |
14 | require Class::MOP; |
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15 | inject_fake_metaclass_for($_) |
16 | for grep $_ ne 'Moo::Object', do { no warnings 'once'; keys %Moo::MAKERS }; |
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17 | inject_fake_metaclass_for($_) for keys %Moo::Role::INFO; |
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18 | require Moose::Meta::Method::Constructor; |
19 | @Moo::HandleMoose::FakeConstructor::ISA = 'Moose::Meta::Method::Constructor'; |
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20 | } |
21 | |
22 | sub inject_fake_metaclass_for { |
23 | my ($name) = @_; |
24 | require Class::MOP; |
25 | Class::MOP::store_metaclass_by_name( |
26 | $name, bless({ name => $name }, 'Moo::HandleMoose::FakeMetaClass') |
27 | ); |
28 | } |
29 | |
30 | our %DID_INJECT; |
31 | |
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32 | { |
33 | package Moo::HandleMoose::FakeConstructor; |
34 | |
35 | sub _uninlined_body { \&Moose::Object::new } |
36 | } |
37 | |
38 | |
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39 | sub inject_real_metaclass_for { |
40 | my ($name) = @_; |
41 | return Class::MOP::get_metaclass_by_name($name) if $DID_INJECT{$name}; |
42 | require Moose; require Moo; require Moo::Role; |
43 | Class::MOP::remove_metaclass_by_name($name); |
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44 | my ($am_role, $meta, $attr_specs) = do { |
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45 | if (my $info = $Moo::Role::INFO{$name}) { |
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46 | (1, Moose::Meta::Role->initialize($name), $info->{attributes}) |
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47 | } else { |
48 | my $specs = Moo->_constructor_maker_for($name)->all_attribute_specs; |
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49 | (0, Moose::Meta::Class->initialize($name), $specs); |
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50 | } |
51 | }; |
52 | my %methods = %{Role::Tiny->_concrete_methods_of($name)}; |
53 | my @attrs; |
54 | { |
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55 | # This local is completely not required for roles but harmless |
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56 | local @{_getstash($name)}{keys %methods}; |
57 | foreach my $name (keys %$attr_specs) { |
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58 | my %spec = %{$attr_specs->{$name}}; |
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59 | $spec{is} = 'ro' if $spec{is} eq 'lazy' or $spec{is} eq 'rwp'; |
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60 | delete $spec{asserter}; |
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61 | if (my $isa = $spec{isa}) { |
62 | $spec{isa} = do { |
63 | if (my $mapped = $TYPE_MAP{$isa}) { |
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64 | $mapped->(); |
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65 | } else { |
66 | Moose::Meta::TypeConstraint->new( |
67 | constraint => sub { eval { &$isa; 1 } } |
68 | ); |
69 | } |
70 | }; |
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71 | die "Aaaargh" if $spec{coerce}; |
72 | } elsif (my $coerce = $spec{coerce}) { |
73 | my $attr = perlstring($name); |
74 | my $tc = Moose::Meta::TypeConstraint->new( |
75 | constraint => sub { die "This is not going to work" }, |
76 | inlined => sub { 'my $res = $_[42]{'.$attr.'}; $_[42]{'.$attr.'} = 1; $res' }, |
77 | #coercion => Moose::Meta::TypeCoercion->new( |
78 | # type_coercion_map => [ |
79 | # 'Item', $coerce |
80 | # ] |
81 | #) |
82 | ); |
83 | $tc->coercion(Moose::Meta::TypeCoercion->new) |
84 | ->_compiled_type_coercion($coerce); |
85 | $spec{isa} = $tc; |
86 | $spec{coerce} = 1; |
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87 | } |
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88 | push @attrs, $meta->add_attribute($name => %spec); |
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89 | } |
90 | } |
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91 | if ($am_role) { |
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92 | my $info = $Moo::Role::INFO{$name}; |
93 | $meta->add_required_methods(@{$info->{requires}}); |
94 | foreach my $modifier (@{$info->{modifiers}}) { |
95 | my ($type, @args) = @$modifier; |
96 | $meta->${\"add_${type}_method_modifier"}(@args); |
97 | } |
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98 | } else { |
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99 | foreach my $attr (@attrs) { |
100 | foreach my $method (@{$attr->associated_methods}) { |
101 | $method->{body} = $name->can($method->name); |
102 | } |
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103 | } |
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104 | bless( |
105 | $meta->find_method_by_name('new'), |
106 | 'Moo::HandleMoose::FakeConstructor', |
107 | ); |
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108 | } |
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109 | $meta->add_role(Class::MOP::class_of($_)) |
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110 | for do { no warnings 'once'; keys %{$Role::Tiny::APPLIED_TO{$name}} }; |
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111 | $DID_INJECT{$name} = 1; |
112 | $meta; |
113 | } |
114 | |
115 | { |
116 | package Moo::HandleMoose::FakeMetaClass; |
117 | |
118 | sub DESTROY { } |
119 | |
120 | sub AUTOLOAD { |
121 | my ($meth) = (our $AUTOLOAD =~ /([^:]+)$/); |
122 | Moo::HandleMoose::inject_real_metaclass_for((shift)->{name})->$meth(@_) |
123 | } |
124 | sub can { |
125 | Moo::HandleMoose::inject_real_metaclass_for((shift)->{name})->can(@_) |
126 | } |
127 | sub isa { |
128 | Moo::HandleMoose::inject_real_metaclass_for((shift)->{name})->isa(@_) |
129 | } |
130 | } |
131 | |
132 | 1; |