Commit | Line | Data |
fc1d8369 |
1 | package Mouse::Meta::Method::Constructor; |
2 | use strict; |
3 | use warnings; |
4 | |
5 | sub generate_constructor_method_inline { |
41cdacce |
6 | my ($class, $meta) = @_; |
24ad3f66 |
7 | |
a4d5249c |
8 | my @attrs = $meta->compute_all_applicable_attributes; |
fc1d8369 |
9 | my $buildall = $class->_generate_BUILDALL($meta); |
9dcd7d23 |
10 | my $buildargs = $class->_generate_BUILDARGS($meta); |
c12edd9a |
11 | my $processattrs = $class->_generate_processattrs($meta, \@attrs); |
fc1d8369 |
12 | |
24ad3f66 |
13 | my $code = <<"..."; |
fc1d8369 |
14 | sub { |
15 | my \$class = shift; |
16 | my \$args = $buildargs; |
24ad3f66 |
17 | my \$instance = bless {}, \$class; |
fc1d8369 |
18 | $processattrs; |
19 | $buildall; |
20 | return \$instance; |
21 | } |
22 | ... |
24ad3f66 |
23 | |
24ad3f66 |
24 | local $@; |
25 | my $res = eval $code; |
26 | die $@ if $@; |
27 | $res; |
fc1d8369 |
28 | } |
29 | |
30 | sub _generate_processattrs { |
c12edd9a |
31 | my ($class, $meta, $attrs) = @_; |
fc1d8369 |
32 | my @res; |
9df6f0cd |
33 | |
34 | for my $index (0 .. @$attrs - 1) { |
c12edd9a |
35 | my $attr = $attrs->[$index]; |
fc1d8369 |
36 | my $key = $attr->name; |
9df6f0cd |
37 | my $code = ''; |
38 | |
39 | if (defined $attr->init_arg) { |
40 | my $from = $attr->init_arg; |
c91862e8 |
41 | |
9df6f0cd |
42 | $code .= "if (exists \$args->{'$from'}) {\n"; |
c91862e8 |
43 | |
b3b74cc6 |
44 | if ($attr->should_coerce && $attr->type_constraint) { |
3b46bd49 |
45 | $code .= "my \$value = Mouse::Util::TypeConstraints->typecast_constraints('".$attr->associated_class->name."', \$attrs[$index]->{find_type_constraint}, \$attrs[$index]->{type_constraint}, \$args->{'$from'});\n"; |
7bf66a9b |
46 | } |
47 | else { |
7756897f |
48 | $code .= "my \$value = \$args->{'$from'};\n"; |
fc1d8369 |
49 | } |
c91862e8 |
50 | |
fc1d8369 |
51 | if ($attr->has_type_constraint) { |
7756897f |
52 | $code .= "{ |
53 | local \$_ = \$value; |
54 | unless (\$attrs[$index]->{find_type_constraint}->(\$_)) { |
55 | \$attrs[$index]->verify_type_constraint_error('$key', \$_, \$attrs[$index]->type_constraint) |
56 | } |
57 | }"; |
fc1d8369 |
58 | } |
c91862e8 |
59 | |
7756897f |
60 | $code .= "\$instance->{'$key'} = \$value;\n"; |
c91862e8 |
61 | |
41cdacce |
62 | if ($attr->is_weak_ref) { |
7756897f |
63 | $code .= "Scalar::Util::weaken( \$instance->{'$key'} ) if ref( \$value );\n"; |
41cdacce |
64 | } |
c91862e8 |
65 | |
9df6f0cd |
66 | if ($attr->has_trigger) { |
7756897f |
67 | $code .= "\$attrs[$index]->{trigger}->( \$instance, \$value, \$attrs[$index] );\n"; |
fc1d8369 |
68 | } |
c91862e8 |
69 | |
7756897f |
70 | $code .= "\n} else {\n"; |
9df6f0cd |
71 | } |
c91862e8 |
72 | |
9df6f0cd |
73 | if ($attr->has_default || $attr->has_builder) { |
74 | unless ($attr->is_lazy) { |
75 | my $default = $attr->default; |
76 | my $builder = $attr->builder; |
e8ba7b26 |
77 | |
9df6f0cd |
78 | $code .= "my \$value = "; |
e8ba7b26 |
79 | |
9df6f0cd |
80 | if ($attr->should_coerce && $attr->type_constraint) { |
3b46bd49 |
81 | $code .= "Mouse::Util::TypeConstraints->typecast_constraints('".$attr->associated_class->name."', \$attrs[$index]->{find_type_constraint}, \$attrs[$index]->{type_constraint}, "; |
9df6f0cd |
82 | } |
e8ba7b26 |
83 | |
9df6f0cd |
84 | if ($attr->has_builder) { |
85 | $code .= "\$instance->$builder"; |
fc1d8369 |
86 | } |
9df6f0cd |
87 | elsif (ref($default) eq 'CODE') { |
88 | $code .= "\$attrs[$index]->{default}->(\$instance)"; |
e8ba7b26 |
89 | } |
9df6f0cd |
90 | elsif (!defined($default)) { |
91 | $code .= 'undef'; |
fc1d8369 |
92 | } |
9df6f0cd |
93 | elsif ($default =~ /^\-?[0-9]+(?:\.[0-9]+)$/) { |
94 | $code .= $default; |
95 | } |
96 | else { |
97 | $code .= "'$default'"; |
fc1d8369 |
98 | } |
e8ba7b26 |
99 | |
9df6f0cd |
100 | if ($attr->should_coerce) { |
7756897f |
101 | $code .= ");\n"; |
9df6f0cd |
102 | } |
103 | else { |
7756897f |
104 | $code .= ";\n"; |
9df6f0cd |
105 | } |
e8ba7b26 |
106 | |
9df6f0cd |
107 | if ($attr->has_type_constraint) { |
7756897f |
108 | $code .= "{ |
109 | local \$_ = \$value; |
110 | unless (\$attrs[$index]->{find_type_constraint}->(\$_)) { |
111 | \$attrs[$index]->verify_type_constraint_error('$key', \$_, \$attrs[$index]->type_constraint) |
112 | } |
113 | }"; |
fc1d8369 |
114 | } |
9df6f0cd |
115 | |
7756897f |
116 | $code .= "\$instance->{'$key'} = \$value;\n"; |
9df6f0cd |
117 | |
118 | if ($attr->is_weak_ref) { |
7756897f |
119 | $code .= "Scalar::Util::weaken( \$instance->{'$key'} ) if ref( \$value );\n"; |
fc1d8369 |
120 | } |
121 | } |
713a2a05 |
122 | } |
9df6f0cd |
123 | elsif ($attr->is_required) { |
7756897f |
124 | $code .= "Carp::confess('Attribute ($key) is required');"; |
9df6f0cd |
125 | } |
126 | |
7756897f |
127 | $code .= "}\n" if defined $attr->init_arg; |
9df6f0cd |
128 | |
fc1d8369 |
129 | push @res, $code; |
130 | } |
9df6f0cd |
131 | |
fc1d8369 |
132 | return join "\n", @res; |
133 | } |
134 | |
135 | sub _generate_BUILDARGS { |
9dcd7d23 |
136 | my $self = shift; |
137 | my $meta = shift; |
138 | |
139 | if ($meta->name->can('BUILDARGS') != Mouse::Object->can('BUILDARGS')) { |
140 | return '$class->BUILDARGS(@_)'; |
141 | } |
142 | |
143 | return <<'...'; |
fc1d8369 |
144 | do { |
145 | if ( scalar @_ == 1 ) { |
146 | if ( defined $_[0] ) { |
147 | ( ref( $_[0] ) eq 'HASH' ) |
148 | || Carp::confess "Single parameters to new() must be a HASH ref"; |
149 | +{ %{ $_[0] } }; |
150 | } |
151 | else { |
152 | +{}; |
153 | } |
154 | } |
155 | else { |
156 | +{@_}; |
157 | } |
158 | }; |
159 | ... |
160 | } |
161 | |
162 | sub _generate_BUILDALL { |
163 | my ($class, $meta) = @_; |
164 | return '' unless $meta->name->can('BUILD'); |
165 | |
166 | my @code = (); |
167 | push @code, q{no strict 'refs';}; |
168 | push @code, q{no warnings 'once';}; |
169 | no strict 'refs'; |
f2becec7 |
170 | no warnings 'once'; |
ca3bebbd |
171 | for my $klass ($meta->linearized_isa) { |
172 | if (*{ $klass . '::BUILD' }{CODE}) { |
63d74d7a |
173 | push @code, qq{${klass}::BUILD(\$instance, \$args);}; |
fc1d8369 |
174 | } |
175 | } |
176 | return join "\n", @code; |
177 | } |
178 | |
179 | 1; |