パッケージに定義されているメソッドを出力するパッケージのシンボルテーブル(%パッケージ名::)をダンプしてやればオッケーなようです。例えばClass::Accessorのシンボルテーブルをダンプするには下記のように書けばOK。
$ perl -MClass::Accessor -MData::Dumper -e 'print Dumper(\%Class::Accessor::)'
$VAR1 = {
'__ANON__' => *Class::Accessor::__ANON__,
'mk_wo_accessors' => *Class::Accessor::mk_wo_accessors,
'mk_accessors' => *Class::Accessor::mk_accessors,
'make_ro_accessor' => *Class::Accessor::make_ro_accessor,
'mk_ro_accessors' => *Class::Accessor::mk_ro_accessors,
'BEGIN' => *Class::Accessor::BEGIN,
'_mk_accessors' => *Class::Accessor::_mk_accessors,
'get' => *Class::Accessor::get,
'new' => *Class::Accessor::new,
'set' => *Class::Accessor::set,
'_carp' => *Class::Accessor::_carp,
'make_wo_accessor' => *Class::Accessor::make_wo_accessor,
'import' => *Class::Accessor::import,
'make_accessor' => *Class::Accessor::make_accessor,
'VERSION' => *Class::Accessor::VERSION,
'_croak' => *Class::Accessor::_croak
};
2008/11/3 追記: Devel::Symdumpを使うとサブルーチンだったりスカラー変数などを区別することが可能です。まじめにシンボルテーブルを参照するようなプログラムであればこれを使った方が楽かもしれません。
$ perl -MDevel::Symdump -MClass::Accessor -MData::Dumper -e 'print Dumper([ Devel::Symdump->new("Class::Accessor")->functions ])'
$VAR1 = [
'Class::Accessor::mk_accessors',
'Class::Accessor::mk_wo_accessors',
'Class::Accessor::accessor_name_for',
'Class::Accessor::make_ro_accessor',
'Class::Accessor::mk_ro_accessors',
'Class::Accessor::get',
'Class::Accessor::_mk_accessors',
'Class::Accessor::best_practice_accessor_name_for',
'Class::Accessor::new',
'Class::Accessor::set',
'Class::Accessor::best_practice_mutator_name_for',
'Class::Accessor::_carp',
'Class::Accessor::mutator_name_for',
'Class::Accessor::make_wo_accessor',
'Class::Accessor::follow_best_practice',
'Class::Accessor::make_accessor',
'Class::Accessor::_croak'
];
ツッコミを入れる
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