1 package Method::Generate::Accessor;
4 use Class::Tiny::_Utils;
5 use base qw(Class::Tiny::Object);
10 my ($self, $into, $name, $spec, $quote_opts) = @_;
11 die "Must have an is" unless my $is = $spec->{is};
12 local $self->{captures} = {};
15 $self->_generate_get($name, $spec)
16 } elsif ($is eq 'rw') {
17 $self->_generate_getset($name, $spec)
19 die "Unknown is ${is}";
23 "${into}::${name}" => ' '.$body."\n",
24 $self->{captures}, $quote_opts||{}
28 sub is_simple_attribute {
29 my ($self, $name, $spec) = @_;
30 return !grep $spec->{$_}, qw(lazy default builder isa trigger);
34 my ($self, $name, $spec) = @_;
35 my $simple = $self->_generate_simple_get('$_[0]', $name);
36 my ($lazy, $default, $builder) = @{$spec}{qw(lazy default builder)};
37 return $simple unless $lazy and ($default or $builder);
38 'do { '.$self->_generate_use_default(
39 '$_[0]', $name, $spec,
40 $self->_generate_simple_has('$_[0]', $name),
44 sub _generate_simple_has {
45 my ($self, $me, $name) = @_;
46 "exists ${me}->{${\perlstring $name}}";
49 sub generate_get_default {
51 local $self->{captures} = {};
52 my $code = $self->_generate_get_default(@_);
53 return ($code, $self->{captures});
56 sub _generate_use_default {
57 my ($self, $me, $name, $spec, $test) = @_;
58 $self->_generate_simple_set(
59 $me, $name, $self->_generate_get_default($me, $name, $spec)
63 sub _generate_get_default {
64 my ($self, $me, $name, $spec) = @_;
66 ? $self->_generate_call_code($name, 'default', $me, $spec->{default})
67 : "${me}->${\$spec->{builder}}"
70 sub generate_simple_get {
71 shift->_generate_simple_get(@_);
74 sub _generate_simple_get {
75 my ($self, $me, $name) = @_;
76 my $name_str = perlstring $name;
77 "${me}->{${name_str}}";
81 my ($self, $name, $value, $spec) = @_;
82 my $simple = $self->_generate_simple_set('$_[0]', $name, $value);
83 my ($trigger, $isa_check) = @{$spec}{qw(trigger isa)};
84 return $simple unless $trigger or $isa_check;
87 $code .= ' '.$self->_generate_isa_check($name, '$_[1]', $isa_check).';';
90 my $fire = $self->_generate_trigger($name, '$_[0]', '$value', $trigger);
92 ' my $value = '.$simple.'; '.$fire.'; '
101 sub generate_trigger {
103 local $self->{captures} = {};
104 my $code = $self->_generate_trigger(@_);
105 return ($code, $self->{captures});
108 sub _generate_trigger {
109 my ($self, $name, $obj, $value, $trigger) = @_;
110 $self->_generate_call_code($name, 'trigger', "${obj}, ${value}", $trigger);
113 sub generate_isa_check {
115 local $self->{captures} = {};
116 my $code = $self->_generate_isa_check(@_);
117 return ($code, $self->{captures});
120 sub _generate_isa_check {
121 my ($self, $name, $value, $check) = @_;
122 $self->_generate_call_code($name, 'isa_check', $value, $check);
125 sub _generate_call_code {
126 my ($self, $name, $type, $values, $sub) = @_;
127 if (my $quoted = quoted_from_sub($sub)) {
128 my $code = $quoted->[1];
129 my $at_ = 'local @_ = ('.$values.');';
130 if (my $captures = $quoted->[2]) {
131 my $cap_name = qq{\$${type}_captures_for_${name}};
132 $self->{captures}->{$cap_name} = \$captures;
133 return "do {\n".' '.$at_."\n"
134 .Sub::Quote::capture_unroll($cap_name, $captures, 6)
137 return 'do { local @_ = ('.$values.'); '.$code.' }';
139 my $cap_name = qq{\$${type}_for_${name}};
140 $self->{captures}->{$cap_name} = \$sub;
141 return "${cap_name}->(${values})";
144 sub generate_populate_set {
146 local $self->{captures} = {};
147 my $code = $self->_generate_populate_set(@_);
148 return ($code, $self->{captures});
151 sub _generate_populate_set {
152 my ($self, $me, $name, $spec, $source, $test) = @_;
153 if (!$spec->{lazy} and
154 ($spec->{default} or $spec->{builder})) {
155 my $get_indent = ' ' x ($spec->{isa} ? 6 : 4);
157 "(\n${get_indent} ${test}\n${get_indent} ? ${source}\n${get_indent} : "
158 .$self->_generate_get_default(
163 ? " {\n my \$value = ".$get_value.";\n "
164 .$self->_generate_isa_check(
165 $name, '$value', $spec->{isa}
167 .' '.$self->_generate_simple_set($me, $name, '$value').";\n"
169 : ' '.$self->_generate_simple_set($me, $name, $get_value).";\n"
173 .$self->_generate_trigger(
174 $name, $me, $self->_generate_simple_get($me, $name),
183 .$self->_generate_isa_check(
184 $name, $source, $spec->{isa}
188 ." ".$self->_generate_simple_set($me, $name, $source).";\n"
191 .$self->_generate_trigger(
192 $name, $me, $self->_generate_simple_get($me, $name),
201 sub generate_multi_set {
202 my ($self, $me, $to_set, $from) = @_;
203 "\@{${me}}{qw(${\join ' ', @$to_set})} = $from";
206 sub generate_simple_set {
208 local $self->{captures} = {};
209 my $code = $self->_generate_simple_set(@_);
210 return ($code, $self->{captures});
213 sub _generate_simple_set {
214 my ($self, $me, $name, $value) = @_;
215 my $name_str = perlstring $name;
216 "${me}->{${name_str}} = ${value}";
219 sub _generate_getset {
220 my ($self, $name, $spec) = @_;
221 q{(@_ > 1 ? }.$self->_generate_set($name, q{$_[1]}, $spec)
222 .' : '.$self->_generate_get($name).')';