Dynamically determining a class' namespace

[Daniel Berger]

Hi all,

Ruby 1.8.x

Is there a way to determine a classes namespace from within an
instance method?

class Foo
def initialize
# print namespace
end
end

Foo.new # 'Object'? 'Kernel'? nil?

module Bar
Foo.new # 'Bar'
end

module Baz
module Bar
Foo.new # 'Baz::Bar'
end
end

If not, is it possible at the class level? I looked at Module#nesting
and Module#name, but I couldn't see how to use those to get what I
want.

Thanks,

Dan

 

[ara.t.howard]

Hi all,

Ruby 1.8.x

Is there a way to determine a classes namespace from within an
instance method?

class Foo
def initialize
# print namespace
end
end

Foo.new # 'Object'? 'Kernel'? nil?

module Bar
Foo.new # 'Bar'
end

module Baz
module Bar
Foo.new # 'Baz::Bar'
end
end

If not, is it possible at the class level? I looked at Module#nesting
and Module#name, but I couldn't see how to use those to get what I
want.

Thanks,

Dan

http://groups.google.com/group/comp...&q=a.rb+nesting&rnum=2&hl=en#c1fb423d3dcda20e

-a

 

[Tim Pease]

http://groups.google.com/group/comp...&q=a.rb+nesting&rnum=2&hl=en#c1fb423d3dcda20e

Not quite what Mr. Berger is after here.

He wants to know the nesting where the Foo object was created not the
nesting of the Foo class itself. i.e. whenever Foo.new is called,
what is the namespace where it was called.

Frankly, I'm stumped.

TwP

 

[Tim Pease]

harp:~ > cat a.rb
require 'binding_of_caller'

Okay, Ara is there any problem that you have not already solved

TwP

 

[ara.t.howard]

Okay, Ara is there any problem that you have not already solved

TwP

gotta give credit where it's due: that's florian's work.

-a

 

[Mauricio Fernandez]

harp:~ > cat a.rb
require 'binding_of_caller'

class Foo
def self.new
Binding.of_caller{|b| p eval('Module.nesting', b).shift }
end
end

Foo.new # 'Object'? 'Kernel'? nil?

module Bar
Foo.new # 'Bar'
end

module Baz
module Bar
Foo.new # 'Baz::Bar'
end
end

harp:~ > ruby a.rb
nil
Bar
Baz::Bar

$ ruby -v a.rb
ruby 1.8.5 (2006-08-25) [i686-linux]
nil
nil
nil

(Foo with 1.8.5-p12)

1.8.5 killed Binding.of_caller, take a look at ruby-debug
http://rubyforge.org/projects/ruby-debug/.

--
Mauricio Fernandez - http://eigenclass.org - singular Ruby
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