in reply to how to find the module of a specific function?
To find the package in which the method was found:
use mro qw( ); use Scalar::Util qw( blessed ); sub get_package { my ($obj, $method_name) = @_; defined( my $class = blessed($obj) ) or return undef; for my $pkg_name (@{ mro::get_linear_isa($class) }) { my $pkg = do { no strict qw( refs ); *{ $pkg_name.'::'.$method_name } }; return $pkg_name if *{$pkg}{CODE}; } return undef; }
Note: Doesn't work if the method is autoloaded.
To find the package in which the method was compiled:
use B qw( svref_2object ); sub get_package { my ($obj, $method_name) = @_; my $method_ref = $obj->can($method_name) or return undef; return svref_2object($method_ref)->GV->STASH->NAME; }
Note: Only works for autoloaded methods if can is properly overridden.
Note: Works for methods implemented in XS.
To find the file in which the method was compiled:
use B qw( svref_2object ); sub get_package { my ($obj, $method_name) = @_; my $method_ref = $obj->can($method_name) or return undef; return svref_2object($method_ref)->FILE; }
Note: Only works for autoloaded methods if can is properly overridden.
Note: Only works well for Perl methods. For methods implemented in XS, it returns the name of the .c file with no path. For example, returns XS.c for JSON::XS->encode. (This may vary by system, and by XS loader.)
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