Commit | Line | Data |
6f68f022 |
1 | package Method::Generate::Constructor; |
2 | |
3 | use strictures 1; |
4 | use Sub::Quote; |
b1eebd55 |
5 | use base qw(Moo::Object); |
14f32032 |
6 | use Sub::Defer; |
a16d301e |
7 | use B 'perlstring'; |
6b3fe092 |
8 | use Moo::_Utils qw(_getstash); |
6f68f022 |
9 | |
96d3f07a |
10 | sub register_attribute_specs { |
02e9ef74 |
11 | my ($self, @new_specs) = @_; |
12 | my $specs = $self->{attribute_specs}||={}; |
13 | while (my ($name, $new_spec) = splice @new_specs, 0, 2) { |
9f10cfe0 |
14 | if ($name =~ s/^\+//) { |
15 | die "has '+${name}' given but no ${name} attribute already exists" |
16 | unless my $old_spec = $specs->{$name}; |
17 | foreach my $key (keys %$old_spec) { |
ef4ff8da |
18 | if (!exists $new_spec->{$key}) { |
19 | $new_spec->{$key} = $old_spec->{$key} |
74e3858a |
20 | unless $key eq 'handles'; |
ef4ff8da |
21 | } |
22 | elsif ($key eq 'moosify') { |
74e3858a |
23 | $new_spec->{$key} = [ |
24 | map { ref $_ eq 'ARRAY' ? @$_ : $_ } |
25 | ($old_spec->{$key}, $new_spec->{$key}) |
26 | ]; |
ef4ff8da |
27 | } |
9f10cfe0 |
28 | } |
db725460 |
29 | } |
02e9ef74 |
30 | $new_spec->{index} = scalar keys %$specs |
57d402ef |
31 | unless defined $new_spec->{index}; |
02e9ef74 |
32 | $specs->{$name} = $new_spec; |
33 | } |
96d3f07a |
34 | $self; |
35 | } |
36 | |
37 | sub all_attribute_specs { |
38 | $_[0]->{attribute_specs} |
14f32032 |
39 | } |
40 | |
a16d301e |
41 | sub accessor_generator { |
42 | $_[0]->{accessor_generator} |
43 | } |
44 | |
de5c0e53 |
45 | sub construction_string { |
46 | my ($self) = @_; |
02e9ef74 |
47 | $self->{construction_string} |
6b3fe092 |
48 | ||= $self->_build_construction_string; |
49 | } |
50 | |
51 | sub _build_construction_string { |
52 | 'bless(' |
53 | .$_[0]->accessor_generator->default_construction_string |
54 | .', $class);' |
de5c0e53 |
55 | } |
56 | |
14f32032 |
57 | sub install_delayed { |
58 | my ($self) = @_; |
59 | my $package = $self->{package}; |
60 | defer_sub "${package}::new" => sub { |
61 | unquote_sub $self->generate_method( |
62 | $package, 'new', $self->{attribute_specs}, { no_install => 1 } |
63 | ) |
64 | }; |
65 | $self; |
66 | } |
6f68f022 |
67 | |
68 | sub generate_method { |
69 | my ($self, $into, $name, $spec, $quote_opts) = @_; |
70 | foreach my $no_init (grep !exists($spec->{$_}{init_arg}), keys %$spec) { |
71 | $spec->{$no_init}{init_arg} = $no_init; |
72 | } |
a16d301e |
73 | local $self->{captures} = {}; |
301616bb |
74 | my $body = ' my $class = shift;'."\n" |
75 | .' $class = ref($class) if ref($class);'."\n"; |
e0e12d16 |
76 | $body .= $self->_handle_subconstructor($into, $name); |
0123201b |
77 | my $into_buildargs = $into->can('BUILDARGS'); |
78 | if ( $into_buildargs && $into_buildargs != \&Moo::Object::BUILDARGS ) { |
eae70e33 |
79 | $body .= $self->_generate_args_via_buildargs; |
80 | } else { |
81 | $body .= $self->_generate_args; |
82 | } |
6f68f022 |
83 | $body .= $self->_check_required($spec); |
de5c0e53 |
84 | $body .= ' my $new = '.$self->construction_string.";\n"; |
6f68f022 |
85 | $body .= $self->_assign_new($spec); |
077bd026 |
86 | if ($into->can('BUILD')) { |
faa9ce11 |
87 | require Method::Generate::BuildAll; |
077bd026 |
88 | $body .= Method::Generate::BuildAll->new->buildall_body_for( |
89 | $into, '$new', '$args' |
90 | ); |
91 | } |
4053679e |
92 | $body .= ' return $new;'."\n"; |
31eec6e8 |
93 | if ($into->can('DEMOLISH')) { |
7568ba55 |
94 | require Method::Generate::DemolishAll; |
31eec6e8 |
95 | Method::Generate::DemolishAll->new->generate_method($into); |
96 | } |
6f68f022 |
97 | quote_sub |
4053679e |
98 | "${into}::${name}" => $body, |
a16d301e |
99 | $self->{captures}, $quote_opts||{} |
6f68f022 |
100 | ; |
101 | } |
102 | |
e0e12d16 |
103 | sub _handle_subconstructor { |
104 | my ($self, $into, $name) = @_; |
76ab3977 |
105 | if (my $gen = $self->{subconstructor_handler}) { |
e0e12d16 |
106 | ' if ($class ne '.perlstring($into).') {'."\n". |
76ab3977 |
107 | $gen. |
e0e12d16 |
108 | ' }'."\n"; |
109 | } else { |
110 | '' |
111 | } |
112 | } |
113 | |
3a9a65a4 |
114 | sub _cap_call { |
115 | my ($self, $code, $captures) = @_; |
116 | @{$self->{captures}}{keys %$captures} = values %$captures if $captures; |
117 | $code; |
118 | } |
119 | |
eae70e33 |
120 | sub _generate_args_via_buildargs { |
6f68f022 |
121 | my ($self) = @_; |
09233107 |
122 | q{ my $args = $class->BUILDARGS(@_);}."\n" |
123 | .q{ die "BUILDARGS did not return a hashref" unless ref($args) eq 'HASH';} |
124 | ."\n"; |
6f68f022 |
125 | } |
126 | |
0123201b |
127 | # inlined from Moo::Object - update that first. |
eae70e33 |
128 | sub _generate_args { |
129 | my ($self) = @_; |
0123201b |
130 | return <<'_EOA'; |
131 | my $args; |
132 | if ( scalar @_ == 1 ) { |
133 | unless ( defined $_[0] && ref $_[0] eq 'HASH' ) { |
134 | die "Single parameters to new() must be a HASH ref" |
135 | ." data => ". $_[0] ."\n"; |
136 | } |
137 | $args = { %{ $_[0] } }; |
138 | } |
139 | elsif ( @_ % 2 ) { |
140 | die "The new() method for $class expects a hash reference or a key/value list." |
141 | . " You passed an odd number of arguments\n"; |
142 | } |
143 | else { |
144 | $args = {@_}; |
145 | } |
146 | _EOA |
147 | |
eae70e33 |
148 | } |
149 | |
6f68f022 |
150 | sub _assign_new { |
151 | my ($self, $spec) = @_; |
3a9a65a4 |
152 | my $ag = $self->accessor_generator; |
0689a5ab |
153 | my %test; |
46389f86 |
154 | NAME: foreach my $name (sort keys %$spec) { |
6f68f022 |
155 | my $attr_spec = $spec->{$name}; |
0689a5ab |
156 | next NAME unless defined($attr_spec->{init_arg}) |
157 | or $ag->has_eager_default($name, $attr_spec); |
158 | $test{$name} = $attr_spec->{init_arg}; |
6f68f022 |
159 | } |
0689a5ab |
160 | join '', map { |
46389f86 |
161 | my $arg_key = perlstring($test{$_}); |
649ac264 |
162 | my $test = "exists \$args->{$arg_key}"; |
163 | my $source = "\$args->{$arg_key}"; |
164 | my $attr_spec = $spec->{$_}; |
3a9a65a4 |
165 | $self->_cap_call($ag->generate_populate_set( |
234f614d |
166 | '$new', $_, $attr_spec, $source, $test, $test{$_}, |
3a9a65a4 |
167 | )); |
46389f86 |
168 | } sort keys %test; |
6f68f022 |
169 | } |
170 | |
171 | sub _check_required { |
172 | my ($self, $spec) = @_; |
173 | my @required_init = |
174 | map $spec->{$_}{init_arg}, |
c9a5dcbd |
175 | grep { |
176 | my %s = %{$spec->{$_}}; # ignore required if default or builder set |
177 | $s{required} and not($s{builder} or $s{default}) |
178 | } sort keys %$spec; |
6f68f022 |
179 | return '' unless @required_init; |
180 | ' if (my @missing = grep !exists $args->{$_}, qw(' |
181 | .join(' ',@required_init).')) {'."\n" |
182 | .q{ die "Missing required arguments: ".join(', ', sort @missing);}."\n" |
183 | ." }\n"; |
184 | } |
185 | |
6b3fe092 |
186 | use Moo; |
187 | Moo->_constructor_maker_for(__PACKAGE__)->register_attribute_specs( |
188 | attribute_specs => { |
189 | is => 'ro', |
190 | reader => 'all_attribute_specs', |
191 | }, |
192 | accessor_generator => { is => 'ro' }, |
193 | construction_string => { is => 'lazy' }, |
194 | subconstructor_handler => { is => 'ro' }, |
195 | package => { is => 'ro' }, |
196 | ); |
197 | |
6f68f022 |
198 | 1; |