Commit | Line | Data |
ce7f7bf0 |
1 | use Devel::Declare (); |
2 | use Scope::Guard; |
3 | |
4 | { |
5 | package MethodHandlers; |
6 | |
7 | use strict; |
8 | use warnings; |
9 | |
10 | our ($Declarator, $Offset); |
11 | |
12 | sub skip_declarator { |
13 | $Offset += Devel::Declare::toke_move_past_token($Offset); |
14 | } |
15 | |
16 | sub skipspace { |
17 | $Offset += Devel::Declare::toke_skipspace($Offset); |
18 | } |
19 | |
20 | sub strip_name { |
21 | skipspace; |
22 | if (my $len = Devel::Declare::toke_scan_word($Offset, 1)) { |
23 | my $linestr = Devel::Declare::get_linestr(); |
24 | my $name = substr($linestr, $Offset, $len); |
25 | substr($linestr, $Offset, $len) = ''; |
26 | Devel::Declare::set_linestr($linestr); |
27 | return $name; |
28 | } |
29 | return; |
30 | } |
31 | |
32 | sub strip_proto { |
33 | skipspace; |
34 | |
35 | my $linestr = Devel::Declare::get_linestr(); |
36 | if (substr($linestr, $Offset, 1) eq '(') { |
37 | my $length = Devel::Declare::toke_scan_str($Offset); |
38 | my $proto = Devel::Declare::get_lex_stuff(); |
39 | Devel::Declare::clear_lex_stuff(); |
40 | $linestr = Devel::Declare::get_linestr(); |
41 | substr($linestr, $Offset, $length) = ''; |
42 | Devel::Declare::set_linestr($linestr); |
43 | return $proto; |
44 | } |
45 | return; |
46 | } |
47 | |
48 | sub shadow { |
49 | my $pack = Devel::Declare::get_curstash_name; |
50 | Devel::Declare::shadow_sub("${pack}::${Declarator}", $_[0]); |
51 | } |
52 | |
53 | # undef -> my ($self) = shift; |
54 | # '' -> my ($self) = @_; |
55 | # '$foo' -> my ($self, $foo) = @_; |
56 | |
57 | sub make_proto_unwrap { |
58 | my ($proto) = @_; |
59 | my $inject = 'my ($self'; |
60 | if (defined $proto) { |
61 | $inject .= ", $proto" if length($proto); |
62 | $inject .= ') = @_; '; |
63 | } else { |
64 | $inject .= ') = shift;'; |
65 | } |
66 | return $inject; |
67 | } |
68 | |
69 | sub inject_if_block { |
70 | my $inject = shift; |
71 | skipspace; |
72 | my $linestr = Devel::Declare::get_linestr; |
73 | if (substr($linestr, $Offset, 1) eq '{') { |
74 | substr($linestr, $Offset+1, 0) = $inject; |
75 | Devel::Declare::set_linestr($linestr); |
76 | } |
77 | } |
78 | |
79 | sub scope_injector_call { |
80 | return ' BEGIN { MethodHandlers::inject_scope }; '; |
81 | } |
82 | |
83 | sub parser { |
84 | local ($Declarator, $Offset) = @_; |
85 | skip_declarator; |
86 | my $name = strip_name; |
87 | my $proto = strip_proto; |
88 | my $inject = make_proto_unwrap($proto); |
89 | if (defined $name) { |
90 | $inject = scope_injector_call().$inject; |
91 | } |
92 | inject_if_block($inject); |
93 | if (defined $name) { |
94 | $name = join('::', Devel::Declare::get_curstash_name(), $name) |
95 | unless ($name =~ /::/); |
96 | shadow(sub (&) { no strict 'refs'; *{$name} = shift; }); |
97 | } else { |
98 | shadow(sub (&) { shift }); |
99 | } |
100 | } |
101 | |
102 | sub inject_scope { |
103 | $^H |= 0x120000; |
104 | $^H{DD_METHODHANDLERS} = Scope::Guard->new(sub { |
105 | my $linestr = Devel::Declare::get_linestr; |
106 | my $offset = Devel::Declare::get_linestr_offset; |
107 | substr($linestr, $offset, 0) = ';'; |
108 | Devel::Declare::set_linestr($linestr); |
109 | }); |
110 | } |
111 | } |
112 | |
113 | my ($test_method1, $test_method2, @test_list); |
114 | |
115 | { |
116 | package DeclareTest; |
117 | |
118 | sub method (&); |
119 | |
120 | BEGIN { |
121 | Devel::Declare->setup_for( |
122 | __PACKAGE__, |
123 | { method => { const => \&MethodHandlers::parser } } |
124 | ); |
125 | } |
126 | |
127 | method new { |
128 | my $class = ref $self || $self; |
129 | return bless({ @_ }, $class); |
130 | } |
131 | |
132 | method foo ($foo) { |
133 | return (ref $self).': Foo: '.$foo; |
134 | } |
135 | |
136 | method upgrade(){ # no spaces to make case pathological |
137 | bless($self, 'DeclareTest2'); |
138 | } |
139 | |
140 | method DeclareTest2::bar () { |
141 | return 'DeclareTest2: bar'; |
142 | } |
143 | |
144 | $test_method1 = method { |
145 | return join(', ', $self->{attr}, $_[1]); |
146 | }; |
147 | |
148 | $test_method2 = method ($what) { |
149 | return join(', ', ref $self, $what); |
150 | }; |
151 | |
152 | method main () { return "main"; } |
153 | |
154 | @test_list = (method { 1 }, sub { 2 }, method () { 3 }, sub { 4 }); |
155 | |
156 | } |
157 | |
158 | use Test::More 'no_plan'; |
159 | |
160 | my $o = DeclareTest->new(attr => "value"); |
161 | |
162 | isa_ok($o, 'DeclareTest'); |
163 | |
164 | is($o->{attr}, 'value', '@_ args ok'); |
165 | |
166 | is($o->foo('yay'), 'DeclareTest: Foo: yay', 'method with argument ok'); |
167 | |
168 | is($o->main, 'main', 'declaration of package named method ok'); |
169 | |
170 | $o->upgrade; |
171 | |
172 | isa_ok($o, 'DeclareTest2'); |
173 | |
174 | is($o->bar, 'DeclareTest2: bar', 'absolute method declaration ok'); |
175 | |
176 | is($o->$test_method1('no', 'yes'), 'value, yes', 'anon method with @_ ok'); |
177 | |
178 | is($o->$test_method2('this'), 'DeclareTest2, this', 'anon method with proto ok'); |
179 | |
180 | is_deeply([ map { $_->() } @test_list ], [ 1, 2, 3, 4], 'binding ok'); |