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1 | use strict; |
2 | use warnings; |
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3 | use Devel::Declare (); |
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4 | |
5 | { |
6 | package MethodHandlers; |
7 | |
8 | use strict; |
9 | use warnings; |
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10 | use B::Hooks::EndOfScope; |
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11 | |
12 | our ($Declarator, $Offset); |
13 | |
14 | sub skip_declarator { |
15 | $Offset += Devel::Declare::toke_move_past_token($Offset); |
16 | } |
17 | |
18 | sub skipspace { |
19 | $Offset += Devel::Declare::toke_skipspace($Offset); |
20 | } |
21 | |
22 | sub strip_name { |
23 | skipspace; |
24 | if (my $len = Devel::Declare::toke_scan_word($Offset, 1)) { |
25 | my $linestr = Devel::Declare::get_linestr(); |
26 | my $name = substr($linestr, $Offset, $len); |
27 | substr($linestr, $Offset, $len) = ''; |
28 | Devel::Declare::set_linestr($linestr); |
29 | return $name; |
30 | } |
31 | return; |
32 | } |
33 | |
34 | sub strip_proto { |
35 | skipspace; |
36 | |
37 | my $linestr = Devel::Declare::get_linestr(); |
38 | if (substr($linestr, $Offset, 1) eq '(') { |
39 | my $length = Devel::Declare::toke_scan_str($Offset); |
40 | my $proto = Devel::Declare::get_lex_stuff(); |
41 | Devel::Declare::clear_lex_stuff(); |
42 | $linestr = Devel::Declare::get_linestr(); |
43 | substr($linestr, $Offset, $length) = ''; |
44 | Devel::Declare::set_linestr($linestr); |
45 | return $proto; |
46 | } |
47 | return; |
48 | } |
49 | |
50 | sub shadow { |
51 | my $pack = Devel::Declare::get_curstash_name; |
52 | Devel::Declare::shadow_sub("${pack}::${Declarator}", $_[0]); |
53 | } |
54 | |
55 | # undef -> my ($self) = shift; |
56 | # '' -> my ($self) = @_; |
57 | # '$foo' -> my ($self, $foo) = @_; |
58 | |
59 | sub make_proto_unwrap { |
60 | my ($proto) = @_; |
61 | my $inject = 'my ($self'; |
62 | if (defined $proto) { |
63 | $inject .= ", $proto" if length($proto); |
64 | $inject .= ') = @_; '; |
65 | } else { |
66 | $inject .= ') = shift;'; |
67 | } |
68 | return $inject; |
69 | } |
70 | |
71 | sub inject_if_block { |
72 | my $inject = shift; |
73 | skipspace; |
74 | my $linestr = Devel::Declare::get_linestr; |
75 | if (substr($linestr, $Offset, 1) eq '{') { |
76 | substr($linestr, $Offset+1, 0) = $inject; |
77 | Devel::Declare::set_linestr($linestr); |
78 | } |
79 | } |
80 | |
81 | sub scope_injector_call { |
82 | return ' BEGIN { MethodHandlers::inject_scope }; '; |
83 | } |
84 | |
85 | sub parser { |
86 | local ($Declarator, $Offset) = @_; |
87 | skip_declarator; |
88 | my $name = strip_name; |
89 | my $proto = strip_proto; |
90 | my $inject = make_proto_unwrap($proto); |
91 | if (defined $name) { |
92 | $inject = scope_injector_call().$inject; |
93 | } |
94 | inject_if_block($inject); |
95 | if (defined $name) { |
96 | $name = join('::', Devel::Declare::get_curstash_name(), $name) |
97 | unless ($name =~ /::/); |
98 | shadow(sub (&) { no strict 'refs'; *{$name} = shift; }); |
99 | } else { |
100 | shadow(sub (&) { shift }); |
101 | } |
102 | } |
103 | |
104 | sub inject_scope { |
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105 | on_scope_end { |
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106 | my $linestr = Devel::Declare::get_linestr; |
107 | my $offset = Devel::Declare::get_linestr_offset; |
108 | substr($linestr, $offset, 0) = ';'; |
109 | Devel::Declare::set_linestr($linestr); |
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110 | }; |
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111 | } |
112 | } |
113 | |
114 | my ($test_method1, $test_method2, @test_list); |
115 | |
116 | { |
117 | package DeclareTest; |
118 | |
119 | sub method (&); |
120 | |
121 | BEGIN { |
122 | Devel::Declare->setup_for( |
123 | __PACKAGE__, |
124 | { method => { const => \&MethodHandlers::parser } } |
125 | ); |
126 | } |
127 | |
128 | method new { |
129 | my $class = ref $self || $self; |
130 | return bless({ @_ }, $class); |
131 | } |
132 | |
133 | method foo ($foo) { |
134 | return (ref $self).': Foo: '.$foo; |
135 | } |
136 | |
137 | method upgrade(){ # no spaces to make case pathological |
138 | bless($self, 'DeclareTest2'); |
139 | } |
140 | |
141 | method DeclareTest2::bar () { |
142 | return 'DeclareTest2: bar'; |
143 | } |
144 | |
145 | $test_method1 = method { |
146 | return join(', ', $self->{attr}, $_[1]); |
147 | }; |
148 | |
149 | $test_method2 = method ($what) { |
150 | return join(', ', ref $self, $what); |
151 | }; |
152 | |
153 | method main () { return "main"; } |
154 | |
155 | @test_list = (method { 1 }, sub { 2 }, method () { 3 }, sub { 4 }); |
156 | |
157 | } |
158 | |
faaf0544 |
159 | use Test::More 0.88; |
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160 | |
161 | my $o = DeclareTest->new(attr => "value"); |
162 | |
163 | isa_ok($o, 'DeclareTest'); |
164 | |
165 | is($o->{attr}, 'value', '@_ args ok'); |
166 | |
167 | is($o->foo('yay'), 'DeclareTest: Foo: yay', 'method with argument ok'); |
168 | |
169 | is($o->main, 'main', 'declaration of package named method ok'); |
170 | |
171 | $o->upgrade; |
172 | |
173 | isa_ok($o, 'DeclareTest2'); |
174 | |
175 | is($o->bar, 'DeclareTest2: bar', 'absolute method declaration ok'); |
176 | |
177 | is($o->$test_method1('no', 'yes'), 'value, yes', 'anon method with @_ ok'); |
178 | |
179 | is($o->$test_method2('this'), 'DeclareTest2, this', 'anon method with proto ok'); |
180 | |
181 | is_deeply([ map { $_->() } @test_list ], [ 1, 2, 3, 4], 'binding ok'); |
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182 | |
183 | done_testing; |