line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
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1
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1
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1060
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use 5.008; |
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1
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3
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1
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37
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2
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1
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1
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4
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use strict; |
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1
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2
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1
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26
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3
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1
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1
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5
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use warnings; |
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1
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1
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1
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190
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4
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5
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package Scalar::Properties; |
6
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our $VERSION = '1.100860'; |
7
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# ABSTRACT: Run-time properties on scalar variables |
8
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use overload |
9
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1
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28
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q{""} => \&value, |
10
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bool => \&is_true, |
11
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'+' => \&plus, |
12
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'-' => \&minus, |
13
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'*' => \×, |
14
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'/' => \÷, |
15
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'%' => \&modulo, |
16
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'**' => \&exp, |
17
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'<=>' => \&numcmp, |
18
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'cmp' => \&cmp, |
19
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20
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# the following would be autogenerated from 'cmp', but |
21
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# we want to make the methods available explicitly, along |
22
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# with case-insensitive versions |
23
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'eq' => \&eq, |
24
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'ne' => \&ne, |
25
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'lt' => \<, |
26
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'gt' => \>, |
27
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'le' => \&le, |
28
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1
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1
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1670
|
'ge' => \≥ |
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1
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1165
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29
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30
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sub import { |
31
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1
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1
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7
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my $pkg = shift; |
32
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1
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2
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my @defs = qw/integer float binary q qr/; |
33
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1
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2
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my @req; |
34
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1
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50
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6
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@_ = ':all' unless @_; |
35
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1
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5
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for my $key (@_) { |
36
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1
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50
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5
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if ($key eq ':all') { |
37
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1
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4
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@req = @defs; |
38
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} else { |
39
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0
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0
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0
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die __PACKAGE__ . " does not export '$key'" |
40
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unless grep /^$key$/ => @defs; |
41
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0
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0
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push @req => $key; |
42
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} |
43
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} |
44
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1
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1
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overload::constant map { $_ => \&handle } @req; |
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5
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13
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45
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46
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# also manually export some routines |
47
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1
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61
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my $callpkg = caller(1); |
48
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1
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1
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377
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no strict 'refs'; |
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1
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2
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1
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1734
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49
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1
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3
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*{"$callpkg\::$_"} = \&{"$pkg\::$_"} for qw/pass_on passed_on get_pass_on/; |
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3
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27
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3
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8
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50
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} |
51
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52
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# object's hash keys that aren't properties (apart from those starting with |
53
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# and underscore, which are private anyway) |
54
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our %NON_PROPS = map { $_ => 1 } our @NON_PROPS = qw/true/; |
55
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56
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|
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# property propagation |
57
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|
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sub pass_on { |
58
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1
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1
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1
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12
|
our %PASS_ON = map { $_ => 1 } our @PASS_ON = @_; |
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1
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5
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59
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} |
60
|
9
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9
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1
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11
|
sub passed_on { our %PASS_ON; exists $PASS_ON{ +shift } } |
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9
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44
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61
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1
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1
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1
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28
|
sub get_pass_on { our @PASS_ON } |
62
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63
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|
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sub get_props { |
64
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65
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|
|
# get a list of the value's properties |
66
|
466
|
|
|
466
|
1
|
513
|
my $self = shift; |
67
|
466
|
|
|
|
|
443
|
our %NON_PROPS; |
68
|
466
|
|
100
|
|
|
1058
|
return grep { !(/^_/ || exists $NON_PROPS{$_}) } keys %$self; |
|
1882
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|
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|
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7124
|
|
69
|
|
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|
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} |
70
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71
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|
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sub del_prop { |
72
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73
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|
|
# delete one or more properties |
74
|
1
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1
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1
|
2
|
my $self = shift; |
75
|
1
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|
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2
|
our %NON_PROPS; |
76
|
1
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|
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|
9
|
for my $prop (@_) { |
77
|
1
|
50
|
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|
3
|
die "$prop is private, not a property" |
78
|
|
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|
|
if substr($prop, 0, 1) eq '_'; |
79
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1
|
50
|
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|
3
|
die "$prop cannot be deleted" if exists $NON_PROPS{$prop}; |
80
|
1
|
|
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|
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2
|
delete $self->{$prop}; |
81
|
|
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|
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} |
82
|
|
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|
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} |
83
|
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|
84
|
|
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|
|
sub del_all_props { |
85
|
1
|
|
|
1
|
1
|
138
|
my $self = shift; |
86
|
1
|
|
|
|
|
4
|
my @props = $self->get_props; |
87
|
1
|
|
|
|
|
6
|
delete $self->{$_} for @props; |
88
|
|
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|
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|
|
} |
89
|
|
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|
|
90
|
|
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|
|
sub handle { |
91
|
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|
92
|
|
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|
|
# create a new overloaded object |
93
|
563
|
|
|
563
|
1
|
1096
|
my ($orig, $interp, $context, $sub, @prop) = @_; |
94
|
563
|
100
|
|
|
|
2782
|
my $self = bless { |
95
|
|
|
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|
|
|
_value => $orig, |
96
|
|
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|
|
_interp => $interp, |
97
|
|
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|
|
_context => $context, |
98
|
|
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|
|
true => ($orig) ? 1 : 0, |
99
|
|
|
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|
|
}, |
100
|
|
|
|
|
|
|
__PACKAGE__; |
101
|
|
|
|
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|
|
|
102
|
|
|
|
|
|
|
# propagate properties marked as such via pass_on from |
103
|
|
|
|
|
|
|
# participating overloaded values passed in @prop |
104
|
563
|
|
|
|
|
971
|
for my $val (grep { ref $_ eq __PACKAGE__ } @prop) { |
|
668
|
|
|
|
|
1428
|
|
105
|
461
|
|
|
|
|
810
|
for my $prop ($val->get_props) { |
106
|
8
|
100
|
|
|
|
14
|
$self->{$prop} = $val->{$prop} if passed_on($prop); |
107
|
|
|
|
|
|
|
} |
108
|
|
|
|
|
|
|
} |
109
|
563
|
|
|
|
|
6533
|
return $self; |
110
|
|
|
|
|
|
|
} |
111
|
|
|
|
|
|
|
|
112
|
|
|
|
|
|
|
sub create { |
113
|
|
|
|
|
|
|
|
114
|
|
|
|
|
|
|
# take a value and a list of participating values and create |
115
|
|
|
|
|
|
|
# a new object from them by filling in the gaps that handle() |
116
|
|
|
|
|
|
|
# expects with defaults. As seen from handle(), the participating |
117
|
|
|
|
|
|
|
# values (i.e., the values that the first arg was derived from) |
118
|
|
|
|
|
|
|
# are passed so that properties can be properly propagated |
119
|
355
|
|
|
355
|
1
|
635
|
my ($val, @props) = @_; |
120
|
355
|
|
|
0
|
|
1258
|
handle($val, $val, '', sub { }, @props); |
|
0
|
|
|
|
|
0
|
|
121
|
|
|
|
|
|
|
} |
122
|
|
|
|
|
|
|
|
123
|
|
|
|
|
|
|
# call this as a sub, not a method as it also takes unblessed scalars |
124
|
|
|
|
|
|
|
# anything not of this package is stringified to give any potential |
125
|
|
|
|
|
|
|
# other overloading a chance to get at it's actual value |
126
|
|
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|
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|
|
sub value { |
127
|
|
|
|
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|
|
|
128
|
|
|
|
|
|
|
# my $v = ref $_[0] eq __PACKAGE__ ? $_[0]->{_value} : "$_[0]"; |
129
|
|
|
|
|
|
|
# $v =~ s/\\n/\n/gs; # no idea why newlines become literal '\n' |
130
|
1415
|
100
|
|
1415
|
1
|
4726
|
my $v = ref $_[0] eq __PACKAGE__ ? $_[0]->{_interp} : "$_[0]"; |
131
|
1415
|
|
|
|
|
30334
|
return $v; |
132
|
|
|
|
|
|
|
} |
133
|
|
|
|
|
|
|
|
134
|
|
|
|
|
|
|
# ==================== Generated methods ==================== |
135
|
|
|
|
|
|
|
# Generate some string, numeric and boolean methods |
136
|
|
|
|
|
|
|
sub gen_meth { |
137
|
3
|
|
|
3
|
1
|
4
|
my $template = shift; |
138
|
3
|
|
|
|
|
11
|
while (my ($name, $op) = splice(@_, 0, 2)) { |
139
|
31
|
|
|
|
|
279
|
(my $code = $template) =~ s/NAME/$name/g; |
140
|
31
|
|
|
|
|
260
|
$code =~ s/OP/$op/g; |
141
|
31
|
50
|
|
3
|
1
|
7727
|
eval $code; |
|
3
|
0
|
|
1
|
1
|
44
|
|
|
1
|
50
|
|
0
|
1
|
4
|
|
|
1
|
0
|
|
2
|
1
|
3
|
|
|
1
|
100
|
|
0
|
1
|
4
|
|
|
0
|
0
|
|
53
|
1
|
0
|
|
|
0
|
50
|
|
2
|
1
|
0
|
|
|
0
|
50
|
|
0
|
1
|
0
|
|
|
2
|
50
|
|
5
|
1
|
98
|
|
|
2
|
50
|
|
3
|
1
|
9
|
|
|
2
|
100
|
|
3
|
1
|
5
|
|
|
0
|
0
|
|
2
|
1
|
0
|
|
|
0
|
50
|
|
4
|
1
|
0
|
|
|
0
|
100
|
|
2
|
1
|
0
|
|
|
53
|
50
|
|
2
|
1
|
308
|
|
|
53
|
50
|
|
5
|
1
|
141
|
|
|
53
|
|
|
3
|
1
|
128
|
|
|
2
|
|
|
3
|
1
|
51
|
|
|
0
|
|
|
3
|
1
|
0
|
|
|
0
|
|
|
2
|
1
|
0
|
|
|
0
|
|
|
8
|
1
|
0
|
|
|
5
|
|
|
0
|
1
|
16
|
|
|
5
|
|
|
3
|
1
|
13
|
|
|
5
|
|
|
2
|
1
|
14
|
|
|
3
|
|
|
55
|
1
|
12
|
|
|
3
|
|
|
3
|
1
|
10
|
|
|
3
|
|
|
160
|
1
|
10
|
|
|
3
|
|
|
1
|
1
|
10
|
|
|
2
|
|
|
2
|
1
|
8
|
|
|
4
|
|
|
3
|
1
|
51
|
|
|
2
|
|
|
2
|
1
|
8
|
|
|
2
|
|
|
|
|
8
|
|
|
5
|
|
|
|
|
11
|
|
|
5
|
|
|
|
|
12
|
|
|
5
|
|
|
|
|
14
|
|
|
3
|
|
|
|
|
12
|
|
|
3
|
|
|
|
|
60
|
|
|
3
|
|
|
|
|
9
|
|
|
3
|
|
|
|
|
10
|
|
|
3
|
|
|
|
|
8
|
|
|
2
|
|
|
|
|
9
|
|
|
8
|
|
|
|
|
513
|
|
|
8
|
|
|
|
|
24
|
|
|
8
|
|
|
|
|
22
|
|
|
0
|
|
|
|
|
0
|
|
|
0
|
|
|
|
|
0
|
|
|
0
|
|
|
|
|
0
|
|
|
3
|
|
|
|
|
9
|
|
|
3
|
|
|
|
|
8
|
|
|
3
|
|
|
|
|
9
|
|
|
2
|
|
|
|
|
9
|
|
|
55
|
|
|
|
|
397
|
|
|
55
|
|
|
|
|
131
|
|
|
55
|
|
|
|
|
126
|
|
|
3
|
|
|
|
|
10
|
|
|
160
|
|
|
|
|
4351
|
|
|
160
|
|
|
|
|
339
|
|
|
160
|
|
|
|
|
360
|
|
|
1
|
|
|
|
|
4
|
|
|
2
|
|
|
|
|
43
|
|
|
2
|
|
|
|
|
7
|
|
|
2
|
|
|
|
|
5
|
|
|
3
|
|
|
|
|
71
|
|
|
2
|
|
|
|
|
7
|
|
142
|
31
|
50
|
|
|
|
140
|
die "Internal error: $@" if $@; |
143
|
|
|
|
|
|
|
} |
144
|
|
|
|
|
|
|
} |
145
|
|
|
|
|
|
|
my $binop = 'sub NAME { |
146
|
|
|
|
|
|
|
my($n, $m) = @_[0,1]; |
147
|
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($m, $n) = ($n, $m) if($_[2]); |
148
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create(value($n) OP value($m), $n, $m) |
149
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}'; |
150
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gen_meth $binop, qw! |
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plus + |
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minus - |
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times * |
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divide / |
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modulo % |
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exp ** |
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numcmp <=> |
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cmp cmp |
159
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eq eq |
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ne ne |
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lt lt |
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gt gt |
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le le |
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ge ge |
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concat . |
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append . |
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!; |
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169
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# needs 'CORE::lc', otherwise 'Ambiguous call resolved as CORE::lc()' |
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my $bool_i = 'sub NAME { |
171
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create( CORE::lc(value($_[0])) OP CORE::lc(value($_[1])), @_[0,1] ) |
172
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}'; |
173
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gen_meth $bool_i, qw! |
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eqi eq |
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nei ne |
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lti lt |
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gti gt |
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lei le |
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gei ge |
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!; |
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my $func = 'sub NAME { |
182
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create(OP(value($_[0])), $_[0]) |
183
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}'; |
184
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gen_meth $func, qw! |
185
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abs abs |
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length CORE::length |
187
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size CORE::length |
188
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uc uc |
189
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ucfirst ucfirst |
190
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lc lc |
191
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lcfirst lcfirst |
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hex hex |
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oct oct |
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!; |
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196
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# ==================== Miscellaneous Numeric methods ==================== |
197
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4
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4
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1
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sub zero { create($_[0] == 0, $_[0]) } |
198
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199
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# ==================== Miscellaneous Boolean methods ==================== |
200
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126
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126
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1
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847
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sub is_true { $_[0]->{true} } |
201
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2
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2
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1
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8
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sub is_false { !$_[0]->{true} } |
202
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203
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sub true { |
204
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7
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7
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1
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17
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my $self = shift; |
205
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7
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100
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18
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$self->{true} = @_ ? shift : 1; |
206
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7
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22
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return $self; |
207
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} |
208
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3
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3
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1
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9
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sub false { $_[0]->true(0) } |
209
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210
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# ==================== Miscellaneous String methods ==================== |
211
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2
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2
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1
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5
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sub reverse { create(scalar reverse(value($_[0])), $_[0]) } |
212
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1
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1
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1
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12
|
sub swapcase { my $s = shift; $s =~ y/A-Za-z/a-zA-Z/; return create($s) } |
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1
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3
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1
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3
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213
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214
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# $foo->split(/PATTERN/, LIMIT) |
215
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|
sub split { |
216
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5
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5
|
1
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24
|
my ($orig, $pat, $limit) = @_; |
217
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5
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100
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19
|
$limit ||= 0; |
218
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5
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100
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30
|
$pat = qr/\s+/ unless ref($pat) eq 'Regexp'; |
219
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220
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# The following should work: |
221
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|
# map { create($_, $orig) } split $pat => value($orig), $limit; |
222
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|
|
# But there seems to be a bug in split |
223
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|
|
# (cf. p5p: 'Bug report: split splits on wrong pattern') |
224
|
5
|
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8
|
my @el; |
225
|
5
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|
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|
|
420
|
eval '@el = split $pat => value($orig), $limit;'; |
226
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5
|
50
|
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|
22
|
die $@ if $@; |
227
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5
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8
|
return map { create($_, $orig) } @el; |
|
11
|
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22
|
|
228
|
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|
|
} |
229
|
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230
|
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|
|
|
# ==================== Code-execution methods ==================== |
231
|
|
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|
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|
|
sub times_do { |
232
|
2
|
|
|
2
|
1
|
20
|
my ($self, $sub) = @_; |
233
|
2
|
50
|
|
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|
7
|
die 'times_do() method expected a coderef' unless ref $sub eq 'CODE'; |
234
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2
|
|
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|
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6
|
for my $i (1 .. $self) { |
235
|
8
|
|
|
|
|
24
|
$sub->($i); |
236
|
|
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|
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|
|
} |
237
|
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|
|
} |
238
|
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239
|
|
|
|
|
|
|
sub do_upto_step { |
240
|
3
|
|
|
3
|
1
|
6
|
my ($self, $limit, $step, $sub) = @_; |
241
|
3
|
50
|
|
|
|
10
|
die 'expected last arg to be a coderef' |
242
|
|
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|
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|
|
unless ref $sub eq 'CODE'; |
243
|
|
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244
|
|
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|
|
|
|
# for my $i ($self..$limit) { $sub->($i); } |
245
|
3
|
|
|
|
|
5
|
my $i = $self; |
246
|
3
|
|
|
|
|
111
|
while ($i <= $limit) { |
247
|
8
|
|
|
|
|
36
|
$sub->($i); |
248
|
8
|
|
|
|
|
245
|
$i += $step; |
249
|
|
|
|
|
|
|
} |
250
|
|
|
|
|
|
|
} |
251
|
|
|
|
|
|
|
|
252
|
|
|
|
|
|
|
sub do_downto_step { |
253
|
3
|
|
|
3
|
1
|
6
|
my ($self, $limit, $step, $sub) = @_; |
254
|
3
|
50
|
|
|
|
10
|
die 'expected last arg to be a coderef' |
255
|
|
|
|
|
|
|
unless ref $sub eq 'CODE'; |
256
|
3
|
|
|
|
|
6
|
my $i = $self; |
257
|
3
|
|
|
|
|
96
|
while ($i >= $limit) { |
258
|
5
|
|
|
|
|
22
|
$sub->($i); |
259
|
5
|
|
|
|
|
135
|
$i -= $step; |
260
|
|
|
|
|
|
|
} |
261
|
|
|
|
|
|
|
} |
262
|
2
|
|
|
2
|
1
|
8
|
sub do_upto { do_upto_step($_[0], $_[1], 1, $_[2]) } |
263
|
2
|
|
|
2
|
1
|
5
|
sub do_downto { do_downto_step($_[0], $_[1], 1, $_[2]) } |
264
|
|
|
|
|
|
|
|
265
|
|
|
|
|
|
|
sub AUTOLOAD { |
266
|
29
|
|
|
29
|
|
296
|
my $self = shift; |
267
|
29
|
|
|
|
|
161
|
(my $prop = our $AUTOLOAD) =~ s/.*:://; |
268
|
29
|
50
|
33
|
|
|
156
|
return if $prop eq 'DESTROY' || substr($prop, 0, 1) eq '_'; |
269
|
|
|
|
|
|
|
|
270
|
|
|
|
|
|
|
# $x->is_foo or $x->has_foo will return true if 'foo' is |
271
|
|
|
|
|
|
|
# a hash key with a true value |
272
|
29
|
100
|
100
|
|
|
74
|
return defined $self->{ substr($prop, 4) } |
273
|
|
|
|
|
|
|
&& $self->{ substr($prop, 4) } |
274
|
|
|
|
|
|
|
if substr($prop, 0, 4) eq 'has_'; |
275
|
26
|
100
|
100
|
|
|
86
|
return defined $self->{ substr($prop, 3) } |
276
|
|
|
|
|
|
|
&& $self->{ substr($prop, 3) } |
277
|
|
|
|
|
|
|
if substr($prop, 0, 3) eq 'is_'; |
278
|
18
|
100
|
|
|
|
39
|
if (@_) { |
279
|
12
|
|
|
|
|
21
|
$self->{$prop} = shift; |
280
|
12
|
|
|
|
|
30
|
return $self; |
281
|
|
|
|
|
|
|
} |
282
|
6
|
|
|
|
|
24
|
return $self->{$prop}; |
283
|
|
|
|
|
|
|
} |
284
|
|
|
|
|
|
|
1; |
285
|
|
|
|
|
|
|
|
286
|
|
|
|
|
|
|
|
287
|
|
|
|
|
|
|
__END__ |