rj@pollux:~/_ELRIC/implementation/src/examples> perl -MO=Xref -we 1
File -e
Subroutine (definitions)
Package UNIVERSAL
&VERSION s0
&can s0
&isa s0
Package attributes
&bootstrap s0
-e syntax OK
and - btw. B::XRef works "good" for all smaller scripts
I call it on as long as they aren't complicated and ~ 50
lines of code not more. Even then:
Use of uninitialized value in string eq at /usr/lib/perl5/5.6.1/i586-l
+inux/B/Xref.pm line 117.
Use of uninitialized value in substitution (s///) at /usr/lib/perl5/5.
+6.1/i586-linux/B/Xref.pm line 124.
Use of uninitialized value in string eq at /usr/lib/perl5/5.6.1/i586-l
+inux/B/Xref.pm line 117.
Use of uninitialized value in substitution (s///) at /usr/lib/perl5/5.
+6.1/i586-linux/B/Xref.pm line 124.
Use of uninitialized value in concatenation (.) or string at /usr/lib/
+perl5/5.6.1/i586-linux/B/Xref.pm line 130.
Use of uninitialized value in string eq at /usr/lib/perl5/5.6.1/i586-l
+inux/B/Xref.pm line 117.
etc. etc. (cut for node readability)
Use of uninitialized value in substitution (s///) at /usr/lib/perl5/5.
+6.1/i586-linux/B/Xref.pm line 124.
Use of uninitialized value in concatenation (.) or string at /usr/lib/
+perl5/5.6.1/i586-linux/B/Xref.pm line 130.
Use of uninitialized value in concatenation (.) or string at /usr/lib/
+perl5/5.6.1/i586-linux/B/Xref.pm line 130.
Ugly isn't it? But after that the references spill out.
So one must say: unusable for larger projects.
Who needs cross references on small scripts???
Update:
I thought B::Xref spills out human readable output by
default (no params).. :-) Is this considered human readable?
Subroutine deflate
Package (lexical)
$$eref 51
$@$$eref 56
$@$@$$eref 60
$@$@$@$$eref 65
$@$@$@$@$$eref 70
$eref i50, 51
$i i55, 56, 59, 59, 55, 70, 71
$inner i60, 62, 63, 64, 55, 69
$j i59, 60, 65, 66, 67, 59
$key i49
$outer i56, 62, 63, 64, 55, 69
$size i51, 66, 59, 55, 71
@$$eref 51, 56
@$@$$eref 56, 60
@$@$@$$eref 60, 65
@$@$@$@$$eref 65, 70
@$@$@$@$@$$eref 70
Package main
@_ 49, 50
Bye
PetaMem
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