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