Commit | Line | Data |
918fb36e |
1 | use MooseX::Declare; |
2 | |
3 | class CatalystX::Declarative::Keyword::Action |
4 | with MooseX::Declare::Syntax::KeywordHandling { |
5 | |
6 | |
7 | use Carp qw( croak ); |
8 | use Perl6::Junction qw( any ); |
9 | use Data::Dump qw( pp ); |
10 | |
11 | use aliased 'MooseX::Method::Signatures::Meta::Method'; |
12 | use aliased 'MooseX::MethodAttributes::Role::Meta::Method', 'AttributeRole'; |
13 | |
14 | |
15 | method parse (Object $ctx) { |
16 | |
17 | # somewhere to put the attributes |
18 | my %attributes; |
19 | my @populators; |
20 | my $skipped_declarator; |
21 | |
22 | # parse declarations |
23 | until (do { $ctx->skipspace; $ctx->peek_next_char } eq any qw( ; { } )) { |
24 | warn "LINESTR[" . pp($ctx->get_linestr) . "]\n"; |
25 | |
26 | $ctx->skipspace; |
27 | |
28 | # optional commas |
29 | if ($ctx->peek_next_char eq ',') { |
30 | |
31 | my $linestr = $ctx->get_linestr; |
32 | substr($linestr, $ctx->offset, 1) = ''; |
33 | $ctx->set_linestr($linestr); |
34 | |
35 | next; |
36 | } |
37 | |
38 | # next thing should be an option name |
39 | my $option = ( |
40 | $skipped_declarator |
41 | ? $ctx->strip_name |
42 | : do { |
43 | $ctx->skip_declarator; |
44 | $skipped_declarator++; |
45 | $ctx->declarator; |
46 | }) |
47 | or croak "Expected option token, not " . substr($ctx->get_linestr, $ctx->offset); |
48 | |
49 | # we need to be able to handle the rest |
50 | my $handler = $self->can("_handle_${option}_option") |
51 | or croak "Unknown action option: $option"; |
52 | |
53 | # call the handler |
54 | push @populators, $self->$handler($ctx, \%attributes); |
55 | } |
56 | |
57 | croak "Need an action specification" |
58 | unless exists $attributes{Signature}; |
59 | |
60 | my $name = $attributes{Subname}; |
61 | my $method = Method->wrap( |
62 | signature => qq{($attributes{Signature})}, |
63 | package_name => $ctx->get_curstash_name, |
64 | name => $name, |
65 | ); |
66 | |
67 | $_->($method) |
68 | for @populators; |
69 | |
70 | $attributes{PathPart} ||= "'$name'"; |
71 | |
72 | delete $attributes{CaptureArgs} |
73 | if exists $attributes{Args}; |
74 | |
75 | $attributes{CaptureArgs} = 0 |
76 | unless exists $attributes{Args} |
77 | or exists $attributes{CaptureArgs}; |
78 | |
79 | if ($ctx->peek_next_char eq '{') { |
80 | $ctx->inject_if_block($ctx->scope_injector_call . $method->injectable_code); |
81 | } |
82 | else { |
83 | $ctx->inject_code_parts_here( |
84 | sprintf '{ %s%s }', |
85 | $ctx->scope_injector_call, |
86 | $method->injectable_code, |
87 | ); |
88 | } |
89 | |
90 | pp \%attributes; |
91 | |
92 | AttributeRole->meta->apply($method); |
93 | |
94 | my @attributes = map { |
95 | join('', |
96 | $_, |
97 | sprintf('(%s)', $attributes{ $_ }), |
98 | ); |
99 | } keys %attributes; |
100 | |
101 | return $ctx->shadow(sub (&) { |
102 | my $class = caller; |
103 | |
104 | $method->_set_actual_body(shift); |
105 | $method->{attributes} = \@attributes; |
106 | |
107 | $class->meta->add_method($name, $method); |
108 | $class->meta->register_method_attributes($class->can($method->name), \%attributes); |
109 | }); |
110 | } |
111 | |
112 | method _handle_action_option (Object $ctx, HashRef $attrs) { |
113 | |
114 | # action name |
115 | my $name = $ctx->strip_name |
116 | or croak "Anonymous actions not yet supported"; |
117 | |
118 | # signature |
119 | my $proto = $ctx->strip_proto || ''; |
120 | $proto = join(', ', 'Object $self: Object $ctx', $proto || ()); |
121 | |
122 | $attrs->{Subname} = $name; |
123 | $attrs->{Signature} = $proto; |
124 | |
125 | return; |
126 | } |
127 | |
128 | method _handle_is_option (Object $ctx, HashRef $attrs) { |
129 | |
130 | my $what = $ctx->strip_name |
131 | or croak "Expected symbol token after is symbol, not " . substr($ctx->get_linestr, $ctx->offset); |
132 | |
133 | return sub { |
134 | my $method = shift; |
135 | |
136 | if ($what eq any qw( end endpoint final )) { |
137 | my $count = $self->_count_positional_arguments($method); |
138 | $attrs->{Args} = defined($count) ? $count : ''; |
139 | } |
140 | elsif ($what eq 'private') { |
141 | $attrs->{Private} = 1; |
142 | } |
143 | }; |
144 | } |
145 | |
146 | method _handle_under_option (Object $ctx, HashRef $attrs) { |
147 | |
148 | my $target = $self->_strip_actionpath($ctx); |
149 | $attrs->{Chained} = "'$target'"; |
150 | |
151 | return sub { |
152 | my $method = shift; |
153 | |
154 | my $count = $self->_count_positional_arguments($method); |
155 | $attrs->{CaptureArgs} = $count |
156 | if defined $count; |
157 | }; |
158 | } |
159 | |
160 | method _handle_chains_option (Object $ctx, HashRef $attrs) { |
161 | |
162 | $ctx->skipspace; |
163 | $ctx->strip_name eq 'to' |
164 | or croak "Expected to token after chains symbol, not " . substr($ctx->get_linestr, $ctx->offset); |
165 | |
166 | return $self->_handle_under_option($ctx, $attrs); |
167 | } |
168 | |
169 | method _handle_as_option (Object $ctx, HashRef $attrs) { |
170 | |
171 | $ctx->skipspace; |
172 | |
173 | my $path = $self->_strip_actionpath($ctx); |
174 | $attrs->{PathPart} = "'$path'"; |
175 | |
176 | return; |
177 | } |
178 | |
179 | method _count_positional_arguments (Object $method) { |
180 | my $signature = $method->_parsed_signature; |
181 | |
182 | if ($signature->has_positional_params) { |
183 | my $count = @{ scalar($signature->positional_params) }; |
184 | |
185 | if ($count and ($signature->positional_params)[-1]->sigil eq '@') { |
186 | return undef; |
187 | } |
188 | |
189 | return $count - 1; |
190 | } |
191 | |
192 | return 0; |
193 | } |
194 | |
195 | method _strip_actionpath (Object $ctx) { |
196 | |
197 | $ctx->skipspace; |
198 | my $linestr = $ctx->get_linestr; |
199 | my $rest = substr($linestr, $ctx->offset); |
200 | |
201 | if ($rest =~ /^ ( [_a-z] [_a-z0-9]* ) \b/ix) { |
202 | substr($linestr, $ctx->offset, length($1)) = ''; |
203 | $ctx->set_linestr($linestr); |
204 | return $1; |
205 | } |
206 | elsif ($rest =~ /^ ' ( (?:[a-z0-9]|\/)* ) ' /ix) { |
207 | substr($linestr, $ctx->offset, length($1) + 2) = ''; |
208 | $ctx->set_linestr($linestr); |
209 | return $1; |
210 | } |
211 | else { |
212 | croak "Invalid syntax for action path: $rest"; |
213 | } |
214 | } |
215 | } |
216 | |
217 | |
218 | |