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'; |
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8 | |
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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) { |
17 | $new_spec->{$key} = $old_spec->{$key} |
18 | unless exists $new_spec->{$key}; |
9f10cfe0 |
19 | } |
db725460 |
20 | } |
02e9ef74 |
21 | $new_spec->{index} = scalar keys %$specs |
57d402ef |
22 | unless defined $new_spec->{index}; |
02e9ef74 |
23 | $specs->{$name} = $new_spec; |
24 | } |
96d3f07a |
25 | $self; |
26 | } |
27 | |
28 | sub all_attribute_specs { |
29 | $_[0]->{attribute_specs} |
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30 | } |
31 | |
a16d301e |
32 | sub accessor_generator { |
33 | $_[0]->{accessor_generator} |
34 | } |
35 | |
de5c0e53 |
36 | sub construction_string { |
37 | my ($self) = @_; |
02e9ef74 |
38 | $self->{construction_string} |
39 | or 'bless(' |
40 | .$self->accessor_generator->default_construction_string |
41 | .', $class);' |
de5c0e53 |
42 | } |
43 | |
14f32032 |
44 | sub install_delayed { |
45 | my ($self) = @_; |
46 | my $package = $self->{package}; |
47 | defer_sub "${package}::new" => sub { |
48 | unquote_sub $self->generate_method( |
49 | $package, 'new', $self->{attribute_specs}, { no_install => 1 } |
50 | ) |
51 | }; |
52 | $self; |
53 | } |
6f68f022 |
54 | |
55 | sub generate_method { |
56 | my ($self, $into, $name, $spec, $quote_opts) = @_; |
57 | foreach my $no_init (grep !exists($spec->{$_}{init_arg}), keys %$spec) { |
58 | $spec->{$no_init}{init_arg} = $no_init; |
59 | } |
a16d301e |
60 | local $self->{captures} = {}; |
301616bb |
61 | my $body = ' my $class = shift;'."\n" |
62 | .' $class = ref($class) if ref($class);'."\n"; |
e0e12d16 |
63 | $body .= $self->_handle_subconstructor($into, $name); |
0123201b |
64 | my $into_buildargs = $into->can('BUILDARGS'); |
65 | if ( $into_buildargs && $into_buildargs != \&Moo::Object::BUILDARGS ) { |
eae70e33 |
66 | $body .= $self->_generate_args_via_buildargs; |
67 | } else { |
68 | $body .= $self->_generate_args; |
69 | } |
6f68f022 |
70 | $body .= $self->_check_required($spec); |
de5c0e53 |
71 | $body .= ' my $new = '.$self->construction_string.";\n"; |
6f68f022 |
72 | $body .= $self->_assign_new($spec); |
077bd026 |
73 | if ($into->can('BUILD')) { |
faa9ce11 |
74 | require Method::Generate::BuildAll; |
077bd026 |
75 | $body .= Method::Generate::BuildAll->new->buildall_body_for( |
76 | $into, '$new', '$args' |
77 | ); |
78 | } |
4053679e |
79 | $body .= ' return $new;'."\n"; |
31eec6e8 |
80 | if ($into->can('DEMOLISH')) { |
7568ba55 |
81 | require Method::Generate::DemolishAll; |
31eec6e8 |
82 | Method::Generate::DemolishAll->new->generate_method($into); |
83 | } |
6f68f022 |
84 | quote_sub |
4053679e |
85 | "${into}::${name}" => $body, |
a16d301e |
86 | $self->{captures}, $quote_opts||{} |
6f68f022 |
87 | ; |
88 | } |
89 | |
e0e12d16 |
90 | sub _handle_subconstructor { |
91 | my ($self, $into, $name) = @_; |
76ab3977 |
92 | if (my $gen = $self->{subconstructor_handler}) { |
e0e12d16 |
93 | ' if ($class ne '.perlstring($into).') {'."\n". |
76ab3977 |
94 | $gen. |
e0e12d16 |
95 | ' }'."\n"; |
96 | } else { |
97 | '' |
98 | } |
99 | } |
100 | |
3a9a65a4 |
101 | sub _cap_call { |
102 | my ($self, $code, $captures) = @_; |
103 | @{$self->{captures}}{keys %$captures} = values %$captures if $captures; |
104 | $code; |
105 | } |
106 | |
eae70e33 |
107 | sub _generate_args_via_buildargs { |
6f68f022 |
108 | my ($self) = @_; |
09233107 |
109 | q{ my $args = $class->BUILDARGS(@_);}."\n" |
110 | .q{ die "BUILDARGS did not return a hashref" unless ref($args) eq 'HASH';} |
111 | ."\n"; |
6f68f022 |
112 | } |
113 | |
0123201b |
114 | # inlined from Moo::Object - update that first. |
eae70e33 |
115 | sub _generate_args { |
116 | my ($self) = @_; |
0123201b |
117 | return <<'_EOA'; |
118 | my $args; |
119 | if ( scalar @_ == 1 ) { |
120 | unless ( defined $_[0] && ref $_[0] eq 'HASH' ) { |
121 | die "Single parameters to new() must be a HASH ref" |
122 | ." data => ". $_[0] ."\n"; |
123 | } |
124 | $args = { %{ $_[0] } }; |
125 | } |
126 | elsif ( @_ % 2 ) { |
127 | die "The new() method for $class expects a hash reference or a key/value list." |
128 | . " You passed an odd number of arguments\n"; |
129 | } |
130 | else { |
131 | $args = {@_}; |
132 | } |
133 | _EOA |
134 | |
eae70e33 |
135 | } |
136 | |
6f68f022 |
137 | sub _assign_new { |
138 | my ($self, $spec) = @_; |
3a9a65a4 |
139 | my $ag = $self->accessor_generator; |
0689a5ab |
140 | my %test; |
46389f86 |
141 | NAME: foreach my $name (sort keys %$spec) { |
6f68f022 |
142 | my $attr_spec = $spec->{$name}; |
0689a5ab |
143 | next NAME unless defined($attr_spec->{init_arg}) |
144 | or $ag->has_eager_default($name, $attr_spec); |
145 | $test{$name} = $attr_spec->{init_arg}; |
6f68f022 |
146 | } |
0689a5ab |
147 | join '', map { |
46389f86 |
148 | my $arg_key = perlstring($test{$_}); |
649ac264 |
149 | my $test = "exists \$args->{$arg_key}"; |
150 | my $source = "\$args->{$arg_key}"; |
151 | my $attr_spec = $spec->{$_}; |
3a9a65a4 |
152 | $self->_cap_call($ag->generate_populate_set( |
234f614d |
153 | '$new', $_, $attr_spec, $source, $test, $test{$_}, |
3a9a65a4 |
154 | )); |
46389f86 |
155 | } sort keys %test; |
6f68f022 |
156 | } |
157 | |
158 | sub _check_required { |
159 | my ($self, $spec) = @_; |
160 | my @required_init = |
161 | map $spec->{$_}{init_arg}, |
c9a5dcbd |
162 | grep { |
163 | my %s = %{$spec->{$_}}; # ignore required if default or builder set |
164 | $s{required} and not($s{builder} or $s{default}) |
165 | } sort keys %$spec; |
6f68f022 |
166 | return '' unless @required_init; |
167 | ' if (my @missing = grep !exists $args->{$_}, qw(' |
168 | .join(' ',@required_init).')) {'."\n" |
169 | .q{ die "Missing required arguments: ".join(', ', sort @missing);}."\n" |
170 | ." }\n"; |
171 | } |
172 | |
173 | 1; |