Class: Module

Inherits:
Object show all
Defined in:
lib/carrierwave/core_ext/module_setup.rb

Overview

Copyright © 2005-2009 David Heinemeier Hansson

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#_dependencies ⇒ Object

Returns the value of attribute _dependencies.



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# File 'lib/carrierwave/core_ext/module_setup.rb', line 28

def _dependencies
  @_dependencies
end

#_setup_block ⇒ Object

Returns the value of attribute _setup_block.



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# File 'lib/carrierwave/core_ext/module_setup.rb', line 27

def _setup_block
  @_setup_block
end

Instance Method Details

#depends_on(mod) ⇒ Object 



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# File 'lib/carrierwave/core_ext/module_setup.rb', line 46

def depends_on(mod)
  return if self < mod
  @_dependencies ||= []
  @_dependencies << mod
end

#setup(&blk) ⇒ Object 



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# File 'lib/carrierwave/core_ext/module_setup.rb', line 30

def setup(&blk)
  @_setup_block = blk
end

#use(mod) ⇒ Object 



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# File 'lib/carrierwave/core_ext/module_setup.rb', line 34

def use(mod)
  return if self < mod
  
  (mod._dependencies || []).each do |dep|
    use dep
  end
  # raise "Circular dependencies" if self < mod
  include mod
  extend mod.const_get("ClassMethods") if mod.const_defined?("ClassMethods")
  class_eval(&mod._setup_block) if mod._setup_block
end