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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 | |
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22 | sub maybe_reinject_fake_metaclass_for { |
23 | my ($name) = @_; |
24 | our %DID_INJECT; |
25 | if (delete $DID_INJECT{$name}) { |
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26 | unless ($Moo::Role::INFO{$name}) { |
27 | Moo->_constructor_maker_for($name)->install_delayed; |
28 | } |
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29 | inject_fake_metaclass_for($name); |
30 | } |
31 | } |
32 | |
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33 | sub inject_fake_metaclass_for { |
34 | my ($name) = @_; |
35 | require Class::MOP; |
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36 | require Moo::HandleMoose::FakeMetaClass; |
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37 | Class::MOP::store_metaclass_by_name( |
38 | $name, bless({ name => $name }, 'Moo::HandleMoose::FakeMetaClass') |
39 | ); |
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40 | require Moose::Util::TypeConstraints; |
41 | if ($Moo::Role::INFO{$name}) { |
42 | Moose::Util::TypeConstraints::find_or_create_does_type_constraint($name); |
43 | } else { |
44 | Moose::Util::TypeConstraints::find_or_create_isa_type_constraint($name); |
45 | } |
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46 | } |
47 | |
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48 | { |
49 | package Moo::HandleMoose::FakeConstructor; |
50 | |
51 | sub _uninlined_body { \&Moose::Object::new } |
52 | } |
53 | |
54 | |
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55 | sub inject_real_metaclass_for { |
56 | my ($name) = @_; |
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57 | our %DID_INJECT; |
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58 | return Class::MOP::get_metaclass_by_name($name) if $DID_INJECT{$name}; |
59 | require Moose; require Moo; require Moo::Role; |
60 | Class::MOP::remove_metaclass_by_name($name); |
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61 | my ($am_role, $meta, $attr_specs, $attr_order) = do { |
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62 | if (my $info = $Moo::Role::INFO{$name}) { |
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63 | my @attr_info = @{$info->{attributes}||[]}; |
64 | (1, Moose::Meta::Role->initialize($name), |
65 | { @attr_info }, |
66 | [ @attr_info[grep !($_ % 2), 0..$#attr_info] ] |
67 | ) |
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68 | } else { |
69 | my $specs = Moo->_constructor_maker_for($name)->all_attribute_specs; |
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70 | (0, Moose::Meta::Class->initialize($name), $specs, |
71 | [ sort { $specs->{$a}{index} <=> $specs->{$b}{index} } keys %$specs ] |
72 | ); |
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73 | } |
74 | }; |
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75 | |
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76 | my %methods = %{Role::Tiny->_concrete_methods_of($name)}; |
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77 | |
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78 | while (my ($meth_name, $meth_code) = each %methods) { |
79 | $meta->add_method($meth_name, $meth_code) if $meth_code; |
80 | } |
81 | |
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82 | # if stuff gets added afterwards, _maybe_reset_handlemoose should |
83 | # trigger the recreation of the metaclass but we need to ensure the |
84 | # Role::Tiny cache is cleared so we don't confuse Moo itself. |
85 | if (my $info = $Role::Tiny::INFO{$name}) { |
86 | delete $info->{methods}; |
87 | } |
88 | |
46269e18 |
89 | # needed to ensure the method body is stable and get things named |
90 | Sub::Defer::undefer_sub($_) for grep defined, values %methods; |
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91 | my @attrs; |
92 | { |
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93 | # This local is completely not required for roles but harmless |
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94 | local @{_getstash($name)}{keys %methods}; |
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95 | my %seen_name; |
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96 | foreach my $name (@$attr_order) { |
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97 | $seen_name{$name} = 1; |
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98 | my %spec = %{$attr_specs->{$name}}; |
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99 | delete $spec{index}; |
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100 | $spec{is} = 'ro' if $spec{is} eq 'lazy' or $spec{is} eq 'rwp'; |
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101 | delete $spec{asserter}; |
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102 | my $coerce = $spec{coerce}; |
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103 | if (my $isa = $spec{isa}) { |
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104 | my $tc = $spec{isa} = do { |
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105 | if (my $mapped = $TYPE_MAP{$isa}) { |
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106 | my $type = $mapped->(); |
107 | $coerce ? $type->create_child_type(name => $type->name) : $type; |
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108 | } else { |
109 | Moose::Meta::TypeConstraint->new( |
110 | constraint => sub { eval { &$isa; 1 } } |
111 | ); |
112 | } |
113 | }; |
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114 | if ($coerce) { |
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115 | $tc->coercion(Moose::Meta::TypeCoercion->new) |
116 | ->_compiled_type_coercion($coerce); |
117 | $spec{coerce} = 1; |
118 | } |
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119 | } elsif ($coerce) { |
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120 | my $attr = perlstring($name); |
121 | my $tc = Moose::Meta::TypeConstraint->new( |
122 | constraint => sub { die "This is not going to work" }, |
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123 | inlined => sub { |
124 | 'my $r = $_[42]{'.$attr.'}; $_[42]{'.$attr.'} = 1; $r' |
125 | }, |
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126 | ); |
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127 | $tc->coercion(Moose::Meta::TypeCoercion->new) |
128 | ->_compiled_type_coercion($coerce); |
129 | $spec{isa} = $tc; |
130 | $spec{coerce} = 1; |
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131 | } |
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132 | push @attrs, $meta->add_attribute($name => %spec); |
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133 | } |
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134 | foreach my $mouse (do { our %MOUSE; @{$MOUSE{$name}||[]} }) { |
135 | foreach my $attr ($mouse->get_all_attributes) { |
136 | my %spec = %{$attr}; |
137 | delete @spec{qw( |
138 | associated_class associated_methods __METACLASS__ |
139 | provides curries |
140 | )}; |
141 | my $name = delete $spec{name}; |
142 | next if $seen_name{$name}++; |
143 | push @attrs, $meta->add_attribute($name => %spec); |
144 | } |
145 | } |
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146 | } |
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147 | if ($am_role) { |
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148 | my $info = $Moo::Role::INFO{$name}; |
149 | $meta->add_required_methods(@{$info->{requires}}); |
150 | foreach my $modifier (@{$info->{modifiers}}) { |
151 | my ($type, @args) = @$modifier; |
152 | $meta->${\"add_${type}_method_modifier"}(@args); |
153 | } |
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154 | } else { |
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155 | foreach my $attr (@attrs) { |
156 | foreach my $method (@{$attr->associated_methods}) { |
157 | $method->{body} = $name->can($method->name); |
158 | } |
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159 | } |
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160 | bless( |
161 | $meta->find_method_by_name('new'), |
162 | 'Moo::HandleMoose::FakeConstructor', |
163 | ); |
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164 | } |
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165 | $meta->add_role(Class::MOP::class_of($_)) |
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166 | for grep !/\|/ && $_ ne $name, # reject Foo|Bar and same-role-as-self |
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167 | do { no warnings 'once'; keys %{$Role::Tiny::APPLIED_TO{$name}} }; |
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168 | $DID_INJECT{$name} = 1; |
169 | $meta; |
170 | } |
171 | |
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172 | 1; |