line |
stmt |
bran |
cond |
sub |
pod |
time |
code |
1
|
|
|
|
|
|
|
package Sort::MergeSort::Iterator; |
2
|
|
|
|
|
|
|
|
3
|
|
|
|
|
|
|
# $Id: Iterator.pm 13859 2009-07-24 08:02:37Z david $ |
4
|
|
|
|
|
|
|
|
5
|
2
|
|
|
2
|
|
35523
|
use strict; |
|
2
|
|
|
|
|
6
|
|
|
2
|
|
|
|
|
225
|
|
6
|
2
|
|
|
2
|
|
13
|
use warnings; |
|
2
|
|
|
|
|
4
|
|
|
2
|
|
|
|
|
58
|
|
7
|
2
|
|
|
2
|
|
9
|
use Carp; |
|
2
|
|
|
|
|
9
|
|
|
2
|
|
|
|
|
181
|
|
8
|
2
|
|
|
2
|
|
11
|
use Carp qw(confess); |
|
2
|
|
|
|
|
4
|
|
|
2
|
|
|
|
|
109
|
|
9
|
|
|
|
|
|
|
our $VERSION = '0.01'; |
10
|
2
|
|
|
2
|
|
1932
|
use Symbol; |
|
2
|
|
|
|
|
8732
|
|
|
2
|
|
|
|
|
2296
|
|
11
|
|
|
|
|
|
|
|
12
|
|
|
|
|
|
|
############################################################################## |
13
|
|
|
|
|
|
|
# Constructor. |
14
|
|
|
|
|
|
|
############################################################################## |
15
|
|
|
|
|
|
|
|
16
|
|
|
|
|
|
|
sub new { |
17
|
164
|
|
|
164
|
1
|
346273
|
my ( $class, $code, $destroy ) = @_; |
18
|
164
|
100
|
|
|
|
680
|
croak qq{Argument "$code" is not a code reference} if ref $code ne 'CODE'; |
19
|
163
|
50
|
66
|
|
|
367
|
croak qq{Argument "$destroy" is not a code reference} |
20
|
|
|
|
|
|
|
if $destroy && ref $destroy ne 'CODE'; |
21
|
|
|
|
|
|
|
|
22
|
163
|
|
|
|
|
432
|
my $self = bless gensym, $class; |
23
|
163
|
|
|
|
|
1784
|
${*$self}{code} = $code; |
|
163
|
|
|
|
|
515
|
|
24
|
163
|
|
|
|
|
222
|
${*$self}{destroy} = $destroy; |
|
163
|
|
|
|
|
318
|
|
25
|
163
|
|
|
|
|
205
|
${*$self}{count} = 0; |
|
163
|
|
|
|
|
306
|
|
26
|
|
|
|
|
|
|
|
27
|
163
|
|
|
|
|
859
|
tie(*$self, $class, $self); |
28
|
|
|
|
|
|
|
|
29
|
163
|
|
|
|
|
637
|
return $self; |
30
|
|
|
|
|
|
|
} |
31
|
|
|
|
|
|
|
|
32
|
|
|
|
|
|
|
DESTROY { |
33
|
163
|
|
|
163
|
|
146779
|
my $self = shift; |
34
|
163
|
100
|
|
|
|
147
|
my $dest = ${*$self}{destroy} or return; |
|
163
|
|
|
|
|
21156
|
|
35
|
1
|
|
|
|
|
4
|
$dest->(); |
36
|
|
|
|
|
|
|
} |
37
|
|
|
|
|
|
|
|
38
|
|
|
|
|
|
|
############################################################################## |
39
|
|
|
|
|
|
|
# Instance Methods. |
40
|
|
|
|
|
|
|
############################################################################## |
41
|
|
|
|
|
|
|
|
42
|
|
|
|
|
|
|
sub next { |
43
|
89074
|
|
|
89074
|
1
|
252331
|
my $self = shift; |
44
|
89074
|
|
|
|
|
259876
|
${*$self}{curr} = exists ${*$self}{peek} |
|
89074
|
|
|
|
|
221157
|
|
|
17
|
|
|
|
|
67
|
|
45
|
89057
|
|
|
|
|
217744
|
? delete ${*$self}{peek} |
46
|
89074
|
100
|
|
|
|
81960
|
: ${*$self}{code}->(); |
47
|
89074
|
100
|
|
|
|
143611
|
${*$self}{count}++ if defined ${*$self}{curr}; |
|
88909
|
|
|
|
|
154288
|
|
|
89074
|
|
|
|
|
232665
|
|
48
|
89074
|
|
|
|
|
111699
|
return ${*$self}{curr}; |
|
89074
|
|
|
|
|
267091
|
|
49
|
|
|
|
|
|
|
} |
50
|
|
|
|
|
|
|
|
51
|
|
|
|
|
|
|
############################################################################## |
52
|
|
|
|
|
|
|
|
53
|
|
|
|
|
|
|
sub current { |
54
|
2
|
|
|
2
|
1
|
5
|
my $self = shift; |
55
|
2
|
|
|
|
|
3
|
${*$self}{curr}; |
|
2
|
|
|
|
|
12
|
|
56
|
|
|
|
|
|
|
} |
57
|
|
|
|
|
|
|
|
58
|
|
|
|
|
|
|
############################################################################## |
59
|
|
|
|
|
|
|
|
60
|
|
|
|
|
|
|
sub peek { |
61
|
18
|
|
|
18
|
1
|
503
|
my $self = shift; |
62
|
18
|
|
100
|
|
|
15
|
return ${*$self}{peek} ||= ${*$self}{code}->(); |
|
18
|
|
|
|
|
70
|
|
|
17
|
|
|
|
|
49
|
|
63
|
|
|
|
|
|
|
} |
64
|
|
|
|
|
|
|
|
65
|
|
|
|
|
|
|
############################################################################## |
66
|
|
|
|
|
|
|
|
67
|
|
|
|
|
|
|
sub position { |
68
|
4
|
|
|
4
|
1
|
1141
|
my $self = shift; |
69
|
4
|
|
|
|
|
5
|
${*$self}{count}; |
|
4
|
|
|
|
|
27
|
|
70
|
|
|
|
|
|
|
} |
71
|
|
|
|
|
|
|
|
72
|
|
|
|
|
|
|
############################################################################## |
73
|
|
|
|
|
|
|
|
74
|
|
|
|
|
|
|
sub all { |
75
|
2
|
|
|
2
|
1
|
5
|
my $self = shift; |
76
|
2
|
|
|
|
|
2
|
my @items; |
77
|
2
|
|
|
|
|
6
|
push @items, $self->next while $self->peek; |
78
|
2
|
100
|
|
|
|
27
|
return wantarray ? @items : \@items; |
79
|
|
|
|
|
|
|
} |
80
|
|
|
|
|
|
|
|
81
|
|
|
|
|
|
|
############################################################################## |
82
|
|
|
|
|
|
|
|
83
|
|
|
|
|
|
|
sub do { |
84
|
3
|
|
|
3
|
1
|
7
|
my ( $self, $code ) = @_; |
85
|
3
|
|
|
|
|
6
|
while ( local $_ = $self->next ) { |
86
|
16
|
100
|
|
|
|
39
|
return unless $code->($_); |
87
|
|
|
|
|
|
|
} |
88
|
|
|
|
|
|
|
} |
89
|
|
|
|
|
|
|
|
90
|
|
|
|
|
|
|
############################################################################## |
91
|
|
|
|
|
|
|
|
92
|
|
|
|
|
|
|
sub close |
93
|
|
|
|
|
|
|
{ |
94
|
0
|
|
|
0
|
0
|
0
|
my $self = shift; |
95
|
0
|
0
|
|
|
|
0
|
my $dest = ${*$self}{destroy} or return; |
|
0
|
|
|
|
|
0
|
|
96
|
0
|
|
|
|
|
0
|
$dest->(); |
97
|
0
|
|
|
|
|
0
|
delete ${*$self}{destroy}; |
|
0
|
|
|
|
|
0
|
|
98
|
0
|
|
|
0
|
|
0
|
${*self}{code} = sub { die "attempt to read a closed iterator" }; |
|
0
|
|
|
|
|
0
|
|
|
0
|
|
|
|
|
0
|
|
99
|
|
|
|
|
|
|
} |
100
|
|
|
|
|
|
|
|
101
|
|
|
|
|
|
|
*CLOSE = \&close; |
102
|
|
|
|
|
|
|
|
103
|
0
|
|
|
0
|
0
|
0
|
sub sysread { die "not implemented" } |
104
|
0
|
|
|
0
|
0
|
0
|
sub open { die "not implemented" } |
105
|
0
|
|
|
0
|
0
|
0
|
sub syswrite { die "not implemented" } |
106
|
0
|
|
|
0
|
0
|
0
|
sub ungetc { die "not implemented" } |
107
|
0
|
|
|
0
|
0
|
0
|
sub getc { die "not implemented" } |
108
|
0
|
|
|
0
|
0
|
0
|
sub ungetline { die "not implemented" } |
109
|
0
|
|
|
0
|
0
|
0
|
sub xungetc { die "not implemented" } |
110
|
0
|
|
|
0
|
0
|
0
|
sub print { die "not implemented" } |
111
|
0
|
|
|
0
|
0
|
0
|
sub fileno { die "not implemented" } |
112
|
0
|
|
|
0
|
|
0
|
sub PRINTF { die "not implemented" } |
113
|
0
|
|
|
0
|
|
0
|
sub PRINT { die "not implemented" } |
114
|
0
|
|
|
0
|
|
0
|
sub READ { confess "not implemented" } |
115
|
0
|
|
|
0
|
0
|
0
|
sub read { die "not implemented" } |
116
|
0
|
|
|
0
|
|
0
|
sub WRITE { die "not implemented" } |
117
|
0
|
|
|
0
|
|
0
|
sub TELL { die "not implemented" } |
118
|
0
|
|
|
0
|
|
0
|
sub SEEK { die "not implemented" } |
119
|
0
|
|
|
0
|
|
0
|
sub OPEN { die "not implemented" } |
120
|
0
|
|
|
0
|
|
0
|
sub GETC { die "not implemented" } |
121
|
0
|
|
|
0
|
|
0
|
sub BINMODE { } |
122
|
|
|
|
|
|
|
|
123
|
|
|
|
|
|
|
sub eof |
124
|
|
|
|
|
|
|
{ |
125
|
0
|
|
|
0
|
0
|
0
|
my $self = shift; |
126
|
0
|
|
|
|
|
0
|
return ! defined $self->peek; |
127
|
|
|
|
|
|
|
} |
128
|
|
|
|
|
|
|
|
129
|
|
|
|
|
|
|
*EOF = \&eof; |
130
|
|
|
|
|
|
|
|
131
|
|
|
|
|
|
|
sub getlines |
132
|
|
|
|
|
|
|
{ |
133
|
0
|
|
|
0
|
0
|
0
|
my $self = shift; |
134
|
0
|
0
|
|
|
|
0
|
die unless wantarray; |
135
|
0
|
|
|
|
|
0
|
return ($self->all()); |
136
|
|
|
|
|
|
|
} |
137
|
|
|
|
|
|
|
|
138
|
|
|
|
|
|
|
sub TIEHANDLE |
139
|
|
|
|
|
|
|
{ |
140
|
163
|
|
|
163
|
|
251
|
my ($class, $self) = @_; |
141
|
163
|
|
|
|
|
379
|
return $self; |
142
|
|
|
|
|
|
|
} |
143
|
|
|
|
|
|
|
|
144
|
|
|
|
|
|
|
*READLINE = \&next; |
145
|
|
|
|
|
|
|
|
146
|
|
|
|
|
|
|
1; |
147
|
|
|
|
|
|
|
__END__ |