| … | |
… | |
| 78 | |
78 | |
| 79 | =item - in the hash element C<ukukey2>, in the hash in the my variable |
79 | =item - in the hash element C<ukukey2>, in the hash in the my variable |
| 80 | C<$local> in the sub C<Test::testsub> and also in the hash referenced by |
80 | C<$local> in the sub C<Test::testsub> and also in the hash referenced by |
| 81 | C<$Test::hash2>. |
81 | C<$Test::hash2>. |
| 82 | |
82 | |
|
|
83 | =back |
|
|
84 | |
| 83 | =head1 EXPORTS |
85 | =head1 EXPORTS |
| 84 | |
86 | |
| 85 | None. |
87 | None. |
| 86 | |
88 | |
| 87 | =head1 FUNCTIONS |
89 | =head1 FUNCTIONS |
| … | |
… | |
| 100 | |
102 | |
| 101 | sub find($); |
103 | sub find($); |
| 102 | |
104 | |
| 103 | sub track { |
105 | sub track { |
| 104 | my $buf = ""; |
106 | my $buf = ""; |
|
|
107 | my %ignore; |
| 105 | |
108 | |
| 106 | my $track; $track = sub { |
109 | my $track; $track = sub { |
| 107 | my (undef, $depth, $indent) = @_; |
110 | my ($target, $depth, $indent) = @_; |
|
|
111 | @_ = (); |
|
|
112 | local $ignore{$target+0} = undef; |
| 108 | |
113 | |
| 109 | if ($depth) { |
114 | if ($depth) { |
| 110 | my (@about) = find $_[0]; |
115 | my (@about) = grep !exists $ignore{$_->[1]}, find $target; |
| 111 | if (@about) { |
116 | if (@about) { |
|
|
117 | local @ignore{map $_->[1]+0, @about} = (); |
| 112 | for my $about (@about) { |
118 | for my $about (@about) { |
|
|
119 | local $ignore{$about+0} = undef; |
| 113 | $buf .= (" ") x $indent; |
120 | $buf .= (" ") x $indent; |
| 114 | $buf .= $about->[0]; |
121 | $buf .= $about->[0]; |
| 115 | if (@$about > 1) { |
122 | if (@$about > 1) { |
| 116 | $buf .= " $about->[1], which is\n"; |
123 | $buf .= " $about->[1], which is\n"; |
| 117 | $track->($about->[1], $depth - 1, $indent + 1); |
124 | $track->($about->[1], $depth - 1, $indent + 1); |
| … | |
… | |
| 146 | |
153 | |
| 147 | =cut |
154 | =cut |
| 148 | |
155 | |
| 149 | sub find($) { |
156 | sub find($) { |
| 150 | my ($about, $excl) = &find_; |
157 | my ($about, $excl) = &find_; |
| 151 | my %excl = map +($_ => 1), @$excl; |
158 | my %excl = map +($_ => undef), @$excl; |
| 152 | grep !$excl{$_->[1] + 0}, @$about |
159 | grep !exists $excl{$_->[1] + 0}, @$about |
| 153 | } |
160 | } |
| 154 | |
161 | |
| 155 | =item $ref = Devel::FindRef::ref2ptr $ptr |
162 | =item $ref = Devel::FindRef::ptr2ref $integer |
| 156 | |
163 | |
| 157 | Sometimes you know (from debugging output) the address of a perl scalar |
164 | Sometimes you know (from debugging output) the address of a perl scalar |
| 158 | you are interested in. This function can be used to turn the address into |
165 | you are interested in (e.g. C<HASH(0x176ff70)>). This function can be used |
| 159 | a reference to that scalar. It is quite safe to call on valid addresses, |
166 | to turn the address into a reference to that scalar. It is quite safe to |
| 160 | but extremely dangerous to call on invalid ones. |
167 | call on valid addresses, but extremely dangerous to call on invalid ones. |
|
|
168 | |
|
|
169 | # we know that HASH(0x176ff70) exists, so turn it into a hashref: |
|
|
170 | my $ref_to_hash = Devel::FindRef::ptr2ref 0x176ff70; |
| 161 | |
171 | |
| 162 | =back |
172 | =back |
| 163 | |
173 | |
| 164 | =head1 AUTHOR |
174 | =head1 AUTHOR |
| 165 | |
175 | |
