1 package Hints_pod_examples;
7 our %DOES = ( 'autodie::hints::provider' => 1 );
10 undef_scalar false_scalar zero_scalar empty_list default_list
11 empty_or_false_list undef_n_error_list foo re_fail bar
12 think_positive my_system bizarro_system
19 # Scalar failures always return undef:
20 undef_scalar => { fail => undef },
22 # Scalar failures return any false value [default behaviour]:
23 false_scalar => { fail => sub { return ! $_[0] } },
25 # Scalar failures always return zero explicitly:
26 zero_scalar => { fail => '0' },
28 # List failures always return empty list:
29 # We never want these called in a scalar context
30 empty_list => { scalar => sub { 1 }, list => [] },
32 # List failures return C<()> or C<(undef)> [default expectation]:
33 default_list => { fail => sub { ! @_ || @_ == 1 && !defined $_[0] } },
35 # List failures return C<()> or a single false value:
36 empty_or_false_list => { fail => sub { ! @_ || @_ == 1 && !$_[0] } },
38 # List failures return (undef, "some string")
39 undef_n_error_list => { fail => sub { @_ == 2 && !defined $_[0] } },
43 # Define some subs that all just return their arguments
44 sub undef_scalar { return wantarray ? @_ : $_[0] }
45 sub false_scalar { return wantarray ? @_ : $_[0] }
46 sub zero_scalar { return wantarray ? @_ : $_[0] }
47 sub empty_list { return wantarray ? @_ : $_[0] }
48 sub default_list { return wantarray ? @_ : $_[0] }
49 sub empty_or_false_list { return wantarray ? @_ : $_[0] }
50 sub undef_n_error_list { return wantarray ? @_ : $_[0] }
53 # Unsuccessful foo() returns 0 in all contexts...
54 autodie::hints->set_hints_for(
62 sub foo { return wantarray ? @_ : $_[0] }
64 # Unsuccessful re_fail() returns 'FAIL' or '_FAIL' in scalar context,
65 # returns (-1) in list context...
66 autodie::hints->set_hints_for(
69 scalar => qr/^ _? FAIL $/xms,
74 sub re_fail { return wantarray ? @_ : $_[0] }
76 # Unsuccessful bar() returns 0 in all contexts...
77 autodie::hints->set_hints_for(
85 sub bar { return wantarray ? @_ : $_[0] }
87 # Unsuccessful think_positive() returns negative number on failure...
88 autodie::hints->set_hints_for(
91 scalar => sub { $_[0] < 0 },
92 list => sub { $_[0] < 0 },
96 sub think_positive { return wantarray ? @_ : $_[0] }
98 # Unsuccessful my_system() returns non-zero on failure...
99 autodie::hints->set_hints_for(
102 scalar => sub { $_[0] != 0 },
103 list => sub { $_[0] != 0 },
106 sub my_system { return wantarray ? @_ : $_[0] };