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'; |
6f68f022 |
8 | |
96d3f07a |
9 | sub register_attribute_specs { |
10 | my ($self, %spec) = @_; |
11 | @{$self->{attribute_specs}||={}}{keys %spec} = values %spec; |
12 | $self; |
13 | } |
14 | |
15 | sub all_attribute_specs { |
16 | $_[0]->{attribute_specs} |
14f32032 |
17 | } |
18 | |
a16d301e |
19 | sub accessor_generator { |
20 | $_[0]->{accessor_generator} |
21 | } |
22 | |
de5c0e53 |
23 | sub construction_string { |
24 | my ($self) = @_; |
25 | $self->{construction_string} or 'bless({}, $class);' |
26 | } |
27 | |
14f32032 |
28 | sub install_delayed { |
29 | my ($self) = @_; |
30 | my $package = $self->{package}; |
31 | defer_sub "${package}::new" => sub { |
32 | unquote_sub $self->generate_method( |
33 | $package, 'new', $self->{attribute_specs}, { no_install => 1 } |
34 | ) |
35 | }; |
36 | $self; |
37 | } |
6f68f022 |
38 | |
39 | sub generate_method { |
40 | my ($self, $into, $name, $spec, $quote_opts) = @_; |
41 | foreach my $no_init (grep !exists($spec->{$_}{init_arg}), keys %$spec) { |
42 | $spec->{$no_init}{init_arg} = $no_init; |
43 | } |
a16d301e |
44 | local $self->{captures} = {}; |
6f68f022 |
45 | my $body = ' my $class = shift;'."\n"; |
e0e12d16 |
46 | $body .= $self->_handle_subconstructor($into, $name); |
0123201b |
47 | my $into_buildargs = $into->can('BUILDARGS'); |
48 | if ( $into_buildargs && $into_buildargs != \&Moo::Object::BUILDARGS ) { |
eae70e33 |
49 | $body .= $self->_generate_args_via_buildargs; |
50 | } else { |
51 | $body .= $self->_generate_args; |
52 | } |
6f68f022 |
53 | $body .= $self->_check_required($spec); |
de5c0e53 |
54 | $body .= ' my $new = '.$self->construction_string.";\n"; |
6f68f022 |
55 | $body .= $self->_assign_new($spec); |
077bd026 |
56 | if ($into->can('BUILD')) { |
57 | require Method::Generate::BuildAll; |
58 | $body .= Method::Generate::BuildAll->new->buildall_body_for( |
59 | $into, '$new', '$args' |
60 | ); |
61 | } |
4053679e |
62 | $body .= ' return $new;'."\n"; |
6f68f022 |
63 | quote_sub |
4053679e |
64 | "${into}::${name}" => $body, |
a16d301e |
65 | $self->{captures}, $quote_opts||{} |
6f68f022 |
66 | ; |
67 | } |
68 | |
e0e12d16 |
69 | sub _handle_subconstructor { |
70 | my ($self, $into, $name) = @_; |
71 | if (my $gen = $self->{subconstructor_generator}) { |
72 | ' if ($class ne '.perlstring($into).') {'."\n". |
73 | ' '.$gen.";\n". |
74 | ' return $class->'.$name.'(@_)'.";\n". |
75 | ' }'."\n"; |
76 | } else { |
77 | '' |
78 | } |
79 | } |
80 | |
3a9a65a4 |
81 | sub _cap_call { |
82 | my ($self, $code, $captures) = @_; |
83 | @{$self->{captures}}{keys %$captures} = values %$captures if $captures; |
84 | $code; |
85 | } |
86 | |
eae70e33 |
87 | sub _generate_args_via_buildargs { |
6f68f022 |
88 | my ($self) = @_; |
a17be455 |
89 | q{ my $args = $class->BUILDARGS(@_);}."\n"; |
6f68f022 |
90 | } |
91 | |
0123201b |
92 | # inlined from Moo::Object - update that first. |
eae70e33 |
93 | sub _generate_args { |
94 | my ($self) = @_; |
0123201b |
95 | return <<'_EOA'; |
96 | my $args; |
97 | if ( scalar @_ == 1 ) { |
98 | unless ( defined $_[0] && ref $_[0] eq 'HASH' ) { |
99 | die "Single parameters to new() must be a HASH ref" |
100 | ." data => ". $_[0] ."\n"; |
101 | } |
102 | $args = { %{ $_[0] } }; |
103 | } |
104 | elsif ( @_ % 2 ) { |
105 | die "The new() method for $class expects a hash reference or a key/value list." |
106 | . " You passed an odd number of arguments\n"; |
107 | } |
108 | else { |
109 | $args = {@_}; |
110 | } |
111 | _EOA |
112 | |
eae70e33 |
113 | } |
114 | |
6f68f022 |
115 | sub _assign_new { |
116 | my ($self, $spec) = @_; |
46389f86 |
117 | my (@init, @slots, %test); |
3a9a65a4 |
118 | my $ag = $self->accessor_generator; |
46389f86 |
119 | NAME: foreach my $name (sort keys %$spec) { |
6f68f022 |
120 | my $attr_spec = $spec->{$name}; |
3a9a65a4 |
121 | unless ($ag->is_simple_attribute($name, $attr_spec)) { |
d02da2bc |
122 | next NAME unless defined($attr_spec->{init_arg}) |
4ced3a94 |
123 | or $ag->has_eager_default($name, $attr_spec); |
d02da2bc |
124 | $test{$name} = $attr_spec->{init_arg}; |
46389f86 |
125 | next NAME; |
126 | } |
d02da2bc |
127 | next NAME unless defined(my $i = $attr_spec->{init_arg}); |
46389f86 |
128 | push @init, $i; |
6f68f022 |
129 | push @slots, $name; |
130 | } |
649ac264 |
131 | return '' unless @init or %test; |
46389f86 |
132 | join '', ( |
133 | @init |
3a9a65a4 |
134 | ? ' '.$self->_cap_call($ag->generate_multi_set( |
5d349892 |
135 | '$new', [ @slots ], '@{$args}{qw('.join(' ',@init).')}' |
136 | )).";\n" |
46389f86 |
137 | : '' |
138 | ), map { |
139 | my $arg_key = perlstring($test{$_}); |
649ac264 |
140 | my $test = "exists \$args->{$arg_key}"; |
141 | my $source = "\$args->{$arg_key}"; |
142 | my $attr_spec = $spec->{$_}; |
3a9a65a4 |
143 | $self->_cap_call($ag->generate_populate_set( |
144 | '$new', $_, $attr_spec, $source, $test |
145 | )); |
46389f86 |
146 | } sort keys %test; |
6f68f022 |
147 | } |
148 | |
149 | sub _check_required { |
150 | my ($self, $spec) = @_; |
151 | my @required_init = |
152 | map $spec->{$_}{init_arg}, |
153 | grep $spec->{$_}{required}, |
6d377074 |
154 | sort keys %$spec; |
6f68f022 |
155 | return '' unless @required_init; |
156 | ' if (my @missing = grep !exists $args->{$_}, qw(' |
157 | .join(' ',@required_init).')) {'."\n" |
158 | .q{ die "Missing required arguments: ".join(', ', sort @missing);}."\n" |
159 | ." }\n"; |
160 | } |
161 | |
6d377074 |
162 | sub _check_isa { |
163 | my ($self, $spec) = @_; |
164 | my $acc = $self->accessor_generator; |
165 | my $captures = $self->{captures}; |
166 | my $check = ''; |
167 | foreach my $name (sort keys %$spec) { |
168 | my ($init, $isa) = @{$spec->{$name}}{qw(init_arg isa)}; |
169 | next unless $init and $isa; |
170 | my $init_str = perlstring($init); |
171 | my ($code, $add_captures) = $acc->generate_isa_check( |
172 | $name, "\$args->{${init_str}}", $isa |
173 | ); |
174 | @{$captures}{keys %$add_captures} = values %$add_captures; |
649ac264 |
175 | $check .= " ${code}".( |
176 | (not($spec->{lazy}) and ($spec->{default} or $spec->{builder}) |
177 | ? ";\n" |
178 | : "if exists \$args->{${init_str}};\n" |
179 | ) |
180 | ); |
6d377074 |
181 | } |
182 | return $check; |
183 | } |
184 | |
a16d301e |
185 | sub _fire_triggers { |
186 | my ($self, $spec) = @_; |
a16d301e |
187 | my $acc = $self->accessor_generator; |
188 | my $captures = $self->{captures}; |
189 | my $fire = ''; |
6d377074 |
190 | foreach my $name (sort keys %$spec) { |
a16d301e |
191 | my ($init, $trigger) = @{$spec->{$name}}{qw(init_arg trigger)}; |
192 | next unless $init && $trigger; |
193 | my ($code, $add_captures) = $acc->generate_trigger( |
194 | $name, '$new', $acc->generate_simple_get('$new', $name), $trigger |
195 | ); |
196 | @{$captures}{keys %$add_captures} = values %$add_captures; |
197 | $fire .= " ${code} if exists \$args->{${\perlstring $init}};\n"; |
198 | } |
199 | return $fire; |
200 | } |
201 | |
6f68f022 |
202 | 1; |