1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
#!/usr/bin/perl
use strict;
use lib "blib/lib", ".";
use Regexp::Common qw /pattern RE_comment_ALL/;
use t::Common qw /run_new_tests cross ww/;
use warnings;
pattern name => [qw /comment fairy-language-1/],
create =>
sub {my $re = Regexp::Common::comment::nested "-(-", "-)-";
exists $_ [1] -> {-keep} ? qr /($re)/ : qr /$re/
},
version => 5.006
;
pattern name => [qw /comment fairy-language-2/],
create =>
sub {my $re = Regexp::Common::comment::nested "(", ")";
exists $_ [1] -> {-keep} ? qr /($re)/ : qr /$re/
},
version => 5.006
;
my @data = do {
no warnings;
(
{
nested_tokens => [["(*" => "*)"]],
languages => [qw /Caml Modula-2 Modula-3/],
},
{
start_tokens => ["//"],
nested_tokens => [["/*" => "*/"]],
languages => [qw /Dylan/],
},
{
start_tokens => ["--", "---", "-----"],
nested_tokens => [["{-", "-}"]],
languages => [qw /Haskell/],
},
{
start_tokens => ["!"], # Should not be followed by \
nested_tokens => [["!\\", "\\!"]],
languages => [qw /Hugo/],
},
{
start_tokens => ["#"],
nested_tokens => [["(*" => "*)"]],
languages => [qw /SLIDE/],
},
{
nested_tokens => [["-(-" => "-)-"]],
languages => [qw /fairy-language-1/],
},
{
nested_tokens => [["(" => ")"]],
languages => [qw /fairy-language-2/],
},
);
};
$$_ {start_tokens} ||= [] for @data;
$$_ {nested_tokens} ||= [] for @data;
my @s_tokens = do {
my %h;
grep {!$h {$_} ++} map {@{$$_ {start_tokens}}} @data
};
my @pairs = do {
my %h;
grep {!$h {$$_ [0]} {$$_ [1]} ++} map {@{$$_ {nested_tokens}}} @data
};
#
# Create some comments.
#
my @comments = ("", "This is a comment", "This is a\nmultiline comment",
"\n", map {" $_ "} @s_tokens);
my @no_eol = grep {!/\n/} @comments;
my (%targets, @tests);
foreach my $s_token (@s_tokens) {
my $pass_key = "start_pass_$s_token";
my $fail_key = "start_fail_$s_token";
$targets {$pass_key} = {
list => \@no_eol,
query => sub {$s_token . $_ [0] . "\n"},
};
# Build a list of "bad" comments.
my @bad;
# No trailing newline.
push @bad => map {"$s_token$_"} @no_eol;
# Double newline.
push @bad => map {"$s_token$_\n\n"} @no_eol;
# Double comment.
push @bad => map {"$s_token$_\n" x 2} @no_eol;
# Leading garbage.
push @bad => map {ww (1, 10) . "$s_token$_\n"} @no_eol;
# Trailing garbage.
push @bad => map {"$s_token$_\n" . ww (1, 10)} @no_eol;
$targets {$fail_key} = {
list => \@bad,
};
}
my @parts = cross ["", "[]", "\n"],
["", "7^%", "\n"],
["", "comment", "\n"];
foreach my $pair (@pairs) {
my ($start, $end) = @$pair;
my $pass_key = "nested_pass_${start}_${end}";
my $fail_key = "nested_fail_${start}_${end}";
$targets {"${pass_key}_simple"} = {
list => \@comments,
query => sub {$start . $_ [0] . $end},
};
my @nested = map {$start . $$_ [0] . $start . $$_ [1] .
$end . $$_ [2] . $end} @parts;
$targets {"${pass_key}_nested"} = {
list => \@nested,
};
# Build a list of "bad" comments.
my @bad;
# No end token.
push @bad => map {"$start$_"} @comments;
# No begin token.
push @bad => map {"$_$end"} @comments;
# Double end token.
push @bad => map {"$start$_$end$end"} @comments;
# Double begin token.
push @bad => map {"$start$start$_$end"} @comments;
# Double comment.
push @bad => map {"$start$_$end" x 2} @comments;
# Leading garbage.
push @bad => map {ww (1, 10) . "$start$_$end"} @comments;
# Trailing garbage.
push @bad => map {"$start$_$end" . ww (1, 10)} @comments;
# Bad nested comments.
# Extra start token.
push @bad => map {"$start$_"} @nested;
# Extra end token.
push @bad => map {"$_$end"} @nested;
# Leading garbage.
push @bad => map {ww (1, 10) . $_} @nested;
# Trailing garbage.
push @bad => map {$_ . ww (1, 10)} @nested;
# Double comment.
push @bad => map {$_ x 2} @nested;
$targets {$fail_key} = {
list => \@bad
};
}
foreach my $data (@data) {
foreach my $language (@{$$data {languages}}) {
my (@passes, @failures);
foreach my $my_token (@{$$data {start_tokens}}) {
push @passes => "start_pass_$my_token";
push @failures => "start_fail_$my_token";
}
foreach my $s_token (@s_tokens) {
# Failure, unless there's a token that's a prefix of $s_token.
my $ok = 1;
foreach my $my_token (@{$$data {start_tokens}}) {
$ok = 0 if index ($s_token, $my_token) == 0;
}
push @failures => "start_pass_$s_token" if $ok;
}
foreach my $my_pair (@{$$data {nested_tokens}}) {
my ($my_start, $my_end) = @$my_pair;
push @passes => "nested_pass_${my_start}_${my_end}_simple",
"nested_pass_${my_start}_${my_end}_nested";
push @failures => "nested_fail_${my_start}_${my_end}";
}
foreach my $pair (@pairs) {
my ($start, $end) = @$pair;
# Failure, unless there's a pair that fits.
my $ok = 1;
foreach my $my_pair (@{$$data {nested_tokens}}) {
my ($my_start, $my_end) = @$my_pair;
$ok = 0 if index ($start, $my_start) == 0 &&
rindex ($end, $my_end) ==
length ($end) - length ($my_end);
}
push @failures => "nested_pass_${start}_${end}_simple",
"nested_pass_${start}_${end}_nested" if $ok;
}
(my $sub = "RE_comment_$language") =~ s/\W/X/g;
my $test = {
name => $language,
re => $RE {comment} {$language},
pass => \@passes,
fail => \@failures,
};
# If we call 'pattern' after the 'use Regexp::Common', we won't
# (can't) import a subroutine.
no strict 'refs';
$$test {sub} = \&{$sub} if defined &{"main::$sub"};
push @tests => $test;
}
}
run_new_tests tests => \@tests,
targets => \%targets,
version_from => 'Regexp::Common::comment',
version => 5.006,
;
__END__
|
