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; # *sigh*
use strict qw(vars subs);

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

use AnyEvent ();

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};
 
   eval "require POSIX; 0 < &POSIX::SIG$arg{signal}"
      or croak "AnyEvent->signal called with illegal signal name '$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:	1.13
Committed:	Wed Jul 8 02:01:12 2009 UTC (14 years, 11 months ago) by root
Branch:	MAIN
CVS Tags:	rel-4_81
Changes since 1.12:	+16 -6 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; # sigh
27	use strict qw(vars subs);
28
29	use Carp qw(croak);
30	use Fcntl ();
31
32	use AnyEvent ();
33
34	our @ISA;
35
36	AnyEvent::post_detect {
37	# assume the first ISA member is the implementation
38	# # and link us in before it in the chain.
39	my $MODEL = shift @AnyEvent::ISA;
40	unshift @ISA, $MODEL;
41	unshift @AnyEvent::ISA, AnyEvent::Strict::
42	};
43
44	sub io {
45	my $class = shift;
46	my %arg = @_;
47
48	ref $arg{cb}
49	or croak "AnyEvent->io called with illegal cb argument '$arg{cb}'";
50	delete $arg{cb};
51
52	$arg{poll} =~ /^[rw]$/
53	or croak "AnyEvent->io called with illegal poll argument '$arg{poll}'";
54
55	if (defined fileno $arg{fh} or ref $arg{fh} or $arg{fh} !~ /^\s\d+\s$/) {
56	defined fileno $arg{fh}
57	or croak "AnyEvent->io called with illegal fh argument '$arg{fh}'";
58	} else {
59	$arg{fh} = AnyEvent::_dupfh $arg{poll}, $arg{fh};
60	}
61
62	-f $arg{fh}
63	and croak "AnyEvent->io called with fh argument pointing to a file";
64
65	delete $arg{poll};
66	delete $arg{fh};
67
68	croak "AnyEvent->io called with unsupported parameter(s) " . join ", ", keys %arg
69	if keys %arg;
70
71	$class->SUPER::io (@_)
72	}
73
74	sub timer {
75	my $class = shift;
76	my %arg = @_;
77
78	ref $arg{cb}
79	or croak "AnyEvent->timer called with illegal cb argument '$arg{cb}'";
80	delete $arg{cb};
81
82	exists $arg{after}
83	or croak "AnyEvent->timer called without mandatory 'after' parameter";
84	delete $arg{after};
85
86	!$arg{interval} or $arg{interval} > 0
87	or croak "AnyEvent->timer called with illegal interval argument '$arg{interval}'";
88	delete $arg{interval};
89
90	croak "AnyEvent->timer called with unsupported parameter(s) " . join ", ", keys %arg
91	if keys %arg;
92
93	$class->SUPER::timer (@_)
94	}
95
96	sub signal {
97	my $class = shift;
98	my %arg = @_;
99
100	ref $arg{cb}
101	or croak "AnyEvent->signal called with illegal cb argument '$arg{cb}'";
102	delete $arg{cb};
103
104	eval "require POSIX; 0 < &POSIX::SIG$arg{signal}"
105	or croak "AnyEvent->signal called with illegal signal name '$arg{signal}'";
106	delete $arg{signal};
107
108	croak "AnyEvent->signal called with unsupported parameter(s) " . join ", ", keys %arg
109	if keys %arg;
110
111	$class->SUPER::signal (@_)
112	}
113
114	sub child {
115	my $class = shift;
116	my %arg = @_;
117
118	ref $arg{cb}
119	or croak "AnyEvent->child called with illegal cb argument '$arg{cb}'";
120	delete $arg{cb};
121
122	$arg{pid} =~ /^-?\d+$/
123	or croak "AnyEvent->child called with malformed pid value '$arg{pid}'";
124	delete $arg{pid};
125
126	croak "AnyEvent->child called with unsupported parameter(s) " . join ", ", keys %arg
127	if keys %arg;
128
129	$class->SUPER::child (@_)
130	}
131
132	sub idle {
133	my $class = shift;
134	my %arg = @_;
135
136	ref $arg{cb}
137	or croak "AnyEvent->idle called with illegal cb argument '$arg{cb}'";
138	delete $arg{cb};
139
140	croak "AnyEvent->idle called with unsupported parameter(s) " . join ", ", keys %arg
141	if keys %arg;
142
143	$class->SUPER::idle (@_)
144	}
145
146	sub condvar {
147	my $class = shift;
148	my %arg = @_;
149
150	!exists $arg{cb} or ref $arg{cb}
151	or croak "AnyEvent->condvar called with illegal cb argument '$arg{cb}'";
152	delete $arg{cb};
153
154	croak "AnyEvent->condvar called with unsupported parameter(s) " . join ", ", keys %arg
155	if keys %arg;
156
157	$class->SUPER::condvar (@_)
158	}
159
160	sub time {
161	my $class = shift;
162
163	@_
164	and croak "AnyEvent->time wrongly called with paramaters";
165
166	$class->SUPER::time (@_)
167	}
168
169	sub now {
170	my $class = shift;
171
172	@_
173	and croak "AnyEvent->now wrongly called with paramaters";
174
175	$class->SUPER::now (@_)
176	}
177
178	1;
179
180	=head1 AUTHOR
181
182	Marc Lehmann <schmorp@schmorp.de>
183	http://home.schmorp.de/
184
185	=cut
186