Commit | Line | Data |
022eb0cc |
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 | sub inject_str { |
54 | my $linestr = Devel::Declare::get_linestr; |
55 | substr($linestr, $Offset, 0) = $_[0]; |
56 | Devel::Declare::set_linestr($linestr); |
57 | } |
58 | |
59 | sub strip_str { |
60 | my $linestr = Devel::Declare::get_linestr; |
61 | if (substr($linestr, $Offset, length($_[0])) eq $_[0]) { |
62 | substr($linestr, $Offset, length($_[0])) = ''; |
63 | Devel::Declare::set_linestr($linestr); |
64 | return 1; |
65 | } |
66 | return 0; |
67 | } |
68 | |
69 | sub parser { |
70 | my $pack = shift; |
71 | local ($Declarator, $Offset) = @_; |
72 | skip_declarator; |
73 | skipspace; |
74 | my $name = strip_name; |
75 | skipspace if defined($name); |
76 | my $proto = strip_proto; |
77 | skipspace if defined($proto); |
78 | my $linestr = Devel::Declare::get_linestr; |
79 | if (substr($linestr, $Offset, 1) eq '{') { |
80 | my $inject = 'my ($self'; |
81 | if (defined $proto) { |
82 | $inject .= ", $proto" if length($proto); |
83 | $inject .= ') = @_; '; |
84 | } else { |
85 | $inject .= ') = shift;'; |
86 | } |
87 | if (defined $name) { |
88 | $inject = ' BEGIN { MethodHandlers::inject_scope }; '.$inject; |
89 | } |
90 | substr($linestr, $Offset+1, 0) = $inject; |
91 | Devel::Declare::set_linestr($linestr); |
92 | } |
93 | if (defined $name) { |
94 | $name = join('::', $pack, $name) unless ($name =~ /::/); |
95 | shadow(sub (&) { no strict 'refs'; *{$name} = shift; }); |
96 | } else { |
97 | shadow(sub (&) { shift }); |
98 | } |
99 | } |
100 | |
101 | sub inject_scope { |
102 | $^H |= 0x120000; |
103 | $^H{DD_METHODHANDLERS} = Scope::Guard->new(sub { |
104 | my $linestr = Devel::Declare::get_linestr; |
105 | my $offset = Devel::Declare::get_linestr_offset; |
106 | substr($linestr, $offset, 0) = ';'; |
107 | Devel::Declare::set_linestr($linestr); |
108 | }); |
109 | } |
110 | } |
111 | |
112 | my ($test_method1, $test_method2, @test_list); |
113 | |
114 | { |
115 | package DeclareTest; |
116 | |
117 | sub method (&); |
118 | |
119 | BEGIN { |
120 | Devel::Declare->setup_for( |
121 | __PACKAGE__, |
122 | { method => { const => sub { MethodHandlers::parser(__PACKAGE__, @_) } } } |
123 | ); |
124 | } |
125 | |
126 | method new { |
127 | my $class = ref $self || $self; |
128 | return bless({ @_ }, $class); |
129 | } |
130 | |
131 | method foo ($foo) { |
132 | return (ref $self).': Foo: '.$foo; |
133 | } |
134 | |
135 | method upgrade(){ # no spaces to make case pathological |
136 | bless($self, 'DeclareTest2'); |
137 | } |
138 | |
139 | method DeclareTest2::bar () { |
140 | return 'DeclareTest2: bar'; |
141 | } |
142 | |
143 | $test_method1 = method { |
144 | return join(', ', $self->{attr}, $_[1]); |
145 | }; |
146 | |
147 | $test_method2 = method ($what) { |
148 | return join(', ', ref $self, $what); |
149 | }; |
150 | |
151 | method main () { return "main"; } |
152 | |
153 | @test_list = (method { 1 }, sub { 2 }, method () { 3 }, sub { 4 }); |
154 | |
155 | } |
156 | |
157 | use Test::More 'no_plan'; |
158 | |
159 | my $o = DeclareTest->new(attr => "value"); |
160 | |
161 | isa_ok($o, 'DeclareTest'); |
162 | |
163 | is($o->{attr}, 'value', '@_ args ok'); |
164 | |
165 | is($o->foo('yay'), 'DeclareTest: Foo: yay', 'method with argument ok'); |
166 | |
167 | is($o->main, 'main', 'declaration of package named method ok'); |
168 | |
169 | $o->upgrade; |
170 | |
171 | isa_ok($o, 'DeclareTest2'); |
172 | |
173 | is($o->bar, 'DeclareTest2: bar', 'absolute method declaration ok'); |
174 | |
175 | is($o->$test_method1('no', 'yes'), 'value, yes', 'anon method with @_ ok'); |
176 | |
177 | is($o->$test_method2('this'), 'DeclareTest2, this', 'anon method with proto ok'); |
178 | |
179 | is_deeply([ map { $_->() } @test_list ], [ 1, 2, 3, 4], 'binding ok'); |