lib/AnyEvent/Strict.pm

=head1 NAME

AnyEvent::Strict - force strict mode on for the whole process

=head1 SYNOPSIS

   use AnyEvent::Strict;
   # strict mode now switched on

=head1 DESCRIPTION

This module implements AnyEvent's strict mode.

Loading it makes AnyEvent check all arguments to AnyEvent-methods, at the
expense of being slower (often the argument checking takes longer than the
actual function).

Normally, you don't load this module yourself but instead use it
indirectly via the C<PERL_ANYEVENT_STRICT> environment variable (see
L<AnyEvent>). However, this module can be loaded at any time.

=cut

package AnyEvent::Strict;

no warnings;
use strict qw(vars subs);

use Carp qw(croak);
use Fcntl ();

use AnyEvent ();
use AnyEvent::Util ();

our @ISA;

AnyEvent::post_detect {
   # assume the first ISA member is the implementation
   # # and link us in before it in the chain.
   my $MODEL = shift @AnyEvent::ISA;
   unshift @ISA, $MODEL;
   unshift @AnyEvent::ISA, AnyEvent::Strict::
};

sub io {
   my $class = shift;
   my %arg = @_;

   ref $arg{cb}
      or croak "AnyEvent->io called with illegal cb argument '$arg{cb}'";
   delete $arg{cb};
 
   $arg{poll} =~ /^[rw]$/
      or croak "AnyEvent->io called with illegal poll argument '$arg{poll}'";

   if (defined fileno $arg{fh} or ref $arg{fh} or $arg{fh} !~ /^\s*\d+\s*$/) {
      defined fileno $arg{fh}
         or croak "AnyEvent->io called with illegal fh argument '$arg{fh}'";
   } else {
      $arg{fh} = AnyEvent::_dupfh $arg{poll}, $arg{fh};
   }

   -f $arg{fh}
      and croak "AnyEvent->io called with fh argument pointing to a file";

   delete $arg{poll};
   delete $arg{fh};
 
   croak "AnyEvent->io called with unsupported parameter(s) " . join ", ", keys %arg
      if keys %arg;

   $class->SUPER::io (@_)
}

sub timer {
   my $class = shift;
   my %arg = @_;

   ref $arg{cb}
      or croak "AnyEvent->timer called with illegal cb argument '$arg{cb}'";
   delete $arg{cb};
 
   exists $arg{after}
      or croak "AnyEvent->timer called without mandatory 'after' parameter";
   delete $arg{after};
 
   !$arg{interval} or $arg{interval} > 0
      or croak "AnyEvent->timer called with illegal interval argument '$arg{interval}'";
   delete $arg{interval};
 
   croak "AnyEvent->timer called with unsupported parameter(s) " . join ", ", keys %arg
      if keys %arg;

   $class->SUPER::timer (@_)
}

sub signal {
   my $class = shift;
   my %arg = @_;

   ref $arg{cb}
      or croak "AnyEvent->signal called with illegal cb argument '$arg{cb}'";
   delete $arg{cb};
 
   defined AnyEvent::Util::sig2num $arg{signal}
      or croak "AnyEvent->signal called with illegal signal name '$arg{signal}'";
   delete $arg{signal};
 
   croak "AnyEvent->signal called with unsupported parameter(s) " . join ", ", keys %arg
      if keys %arg;

   $class->SUPER::signal (@_)
}

sub child {
   my $class = shift;
   my %arg = @_;

   ref $arg{cb}
      or croak "AnyEvent->child called with illegal cb argument '$arg{cb}'";
   delete $arg{cb};
 
   $arg{pid} =~ /^-?\d+$/
      or croak "AnyEvent->child called with malformed pid value '$arg{pid}'";
   delete $arg{pid};
 
   croak "AnyEvent->child called with unsupported parameter(s) " . join ", ", keys %arg
      if keys %arg;

   $class->SUPER::child (@_)
}

sub idle {
   my $class = shift;
   my %arg = @_;

   ref $arg{cb}
      or croak "AnyEvent->idle called with illegal cb argument '$arg{cb}'";
   delete $arg{cb};
 
   croak "AnyEvent->idle called with unsupported parameter(s) " . join ", ", keys %arg
      if keys %arg;

   $class->SUPER::idle (@_)
}

sub condvar {
   my $class = shift;
   my %arg = @_;

   !exists $arg{cb} or ref $arg{cb}
      or croak "AnyEvent->condvar called with illegal cb argument '$arg{cb}'";
   delete $arg{cb};
 
   croak "AnyEvent->condvar called with unsupported parameter(s) " . join ", ", keys %arg
      if keys %arg;

   $class->SUPER::condvar (@_)
}

sub time {
   my $class = shift;

   @_
      and croak "AnyEvent->time wrongly called with paramaters";

   $class->SUPER::time (@_)
}

sub now {
   my $class = shift;

   @_
      and croak "AnyEvent->now wrongly called with paramaters";

   $class->SUPER::now (@_)
}

1;

=head1 AUTHOR

 Marc Lehmann <schmorp@schmorp.de>
 http://home.schmorp.de/

=cut

Revision:	1.15
Committed:	Thu Jul 9 21:42:23 2009 UTC (14 years, 11 months ago) by root
Branch:	MAIN
Changes since 1.14:	+4 -2 lines
Log Message:	* empty log message *
#	Content
1	=head1 NAME
2
3	AnyEvent::Strict - force strict mode on for the whole process
4
5	=head1 SYNOPSIS
6
7	use AnyEvent::Strict;
8	# strict mode now switched on
9
10	=head1 DESCRIPTION
11
12	This module implements AnyEvent's strict mode.
13
14	Loading it makes AnyEvent check all arguments to AnyEvent-methods, at the
15	expense of being slower (often the argument checking takes longer than the
16	actual function).
17
18	Normally, you don't load this module yourself but instead use it
19	indirectly via the C<PERL_ANYEVENT_STRICT> environment variable (see
20	L<AnyEvent>). However, this module can be loaded at any time.
21
22	=cut
23
24	package AnyEvent::Strict;
25
26	no warnings;
27	use strict qw(vars subs);
28
29	use Carp qw(croak);
30	use Fcntl ();
31
32	use AnyEvent ();
33	use AnyEvent::Util ();
34
35	our @ISA;
36
37	AnyEvent::post_detect {
38	# assume the first ISA member is the implementation
39	# # and link us in before it in the chain.
40	my $MODEL = shift @AnyEvent::ISA;
41	unshift @ISA, $MODEL;
42	unshift @AnyEvent::ISA, AnyEvent::Strict::
43	};
44
45	sub io {
46	my $class = shift;
47	my %arg = @_;
48
49	ref $arg{cb}
50	or croak "AnyEvent->io called with illegal cb argument '$arg{cb}'";
51	delete $arg{cb};
52
53	$arg{poll} =~ /^[rw]$/
54	or croak "AnyEvent->io called with illegal poll argument '$arg{poll}'";
55
56	if (defined fileno $arg{fh} or ref $arg{fh} or $arg{fh} !~ /^\s\d+\s$/) {
57	defined fileno $arg{fh}
58	or croak "AnyEvent->io called with illegal fh argument '$arg{fh}'";
59	} else {
60	$arg{fh} = AnyEvent::_dupfh $arg{poll}, $arg{fh};
61	}
62
63	-f $arg{fh}
64	and croak "AnyEvent->io called with fh argument pointing to a file";
65
66	delete $arg{poll};
67	delete $arg{fh};
68
69	croak "AnyEvent->io called with unsupported parameter(s) " . join ", ", keys %arg
70	if keys %arg;
71
72	$class->SUPER::io (@_)
73	}
74
75	sub timer {
76	my $class = shift;
77	my %arg = @_;
78
79	ref $arg{cb}
80	or croak "AnyEvent->timer called with illegal cb argument '$arg{cb}'";
81	delete $arg{cb};
82
83	exists $arg{after}
84	or croak "AnyEvent->timer called without mandatory 'after' parameter";
85	delete $arg{after};
86
87	!$arg{interval} or $arg{interval} > 0
88	or croak "AnyEvent->timer called with illegal interval argument '$arg{interval}'";
89	delete $arg{interval};
90
91	croak "AnyEvent->timer called with unsupported parameter(s) " . join ", ", keys %arg
92	if keys %arg;
93
94	$class->SUPER::timer (@_)
95	}
96
97	sub signal {
98	my $class = shift;
99	my %arg = @_;
100
101	ref $arg{cb}
102	or croak "AnyEvent->signal called with illegal cb argument '$arg{cb}'";
103	delete $arg{cb};
104
105	defined AnyEvent::Util::sig2num $arg{signal}
106	or croak "AnyEvent->signal called with illegal signal name '$arg{signal}'";
107	delete $arg{signal};
108
109	croak "AnyEvent->signal called with unsupported parameter(s) " . join ", ", keys %arg
110	if keys %arg;
111
112	$class->SUPER::signal (@_)
113	}
114
115	sub child {
116	my $class = shift;
117	my %arg = @_;
118
119	ref $arg{cb}
120	or croak "AnyEvent->child called with illegal cb argument '$arg{cb}'";
121	delete $arg{cb};
122
123	$arg{pid} =~ /^-?\d+$/
124	or croak "AnyEvent->child called with malformed pid value '$arg{pid}'";
125	delete $arg{pid};
126
127	croak "AnyEvent->child called with unsupported parameter(s) " . join ", ", keys %arg
128	if keys %arg;
129
130	$class->SUPER::child (@_)
131	}
132
133	sub idle {
134	my $class = shift;
135	my %arg = @_;
136
137	ref $arg{cb}
138	or croak "AnyEvent->idle called with illegal cb argument '$arg{cb}'";
139	delete $arg{cb};
140
141	croak "AnyEvent->idle called with unsupported parameter(s) " . join ", ", keys %arg
142	if keys %arg;
143
144	$class->SUPER::idle (@_)
145	}
146
147	sub condvar {
148	my $class = shift;
149	my %arg = @_;
150
151	!exists $arg{cb} or ref $arg{cb}
152	or croak "AnyEvent->condvar called with illegal cb argument '$arg{cb}'";
153	delete $arg{cb};
154
155	croak "AnyEvent->condvar called with unsupported parameter(s) " . join ", ", keys %arg
156	if keys %arg;
157
158	$class->SUPER::condvar (@_)
159	}
160
161	sub time {
162	my $class = shift;
163
164	@_
165	and croak "AnyEvent->time wrongly called with paramaters";
166
167	$class->SUPER::time (@_)
168	}
169
170	sub now {
171	my $class = shift;
172
173	@_
174	and croak "AnyEvent->now wrongly called with paramaters";
175
176	$class->SUPER::now (@_)
177	}
178
179	1;
180
181	=head1 AUTHOR
182
183	Marc Lehmann <schmorp@schmorp.de>
184	http://home.schmorp.de/
185
186	=cut
187