Class: Module

Inherits:
Object show all
Defined in:
lib/ruby_ext/core/multiple_inheritance.rb,
lib/ruby_ext/core/multiple_inheritance.rb

Overview

Inheritance

Instance Method Summary collapse

Instance Method Details

#class_methods(&block) ⇒ Object 



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# File 'lib/ruby_ext/core/multiple_inheritance.rb', line 58

def class_methods &block
  if block      
    class_prototype.class_eval &block      
    extend class_prototype
  else
    class_prototype.instance_methods
  end
end

#class_prototype ⇒ Object 



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# File 'lib/ruby_ext/core/multiple_inheritance.rb', line 39

def class_prototype
  unless @class_prototype
    ancestor = ancestors[1]
    if(
      !const_defined?(:ClassMethods) or 
      (
        const_defined?(:ClassMethods) and ancestor and ancestor.const_defined?(:ClassMethods) and 
        const_get(:ClassMethods) == ancestor.const_get(:ClassMethods)
      )
    )
      class_eval "module ClassMethods; end", __FILE__, __LINE__        
    end      
    @class_prototype = const_get :ClassMethods
    
    (class << self; self end).include2 @class_prototype
  end
  @class_prototype
end

#directly_included_by ⇒ Object 



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# File 'lib/ruby_ext/core/multiple_inheritance.rb', line 18

def directly_included_by
  @directly_included_by ||= Set.new
end

#include2(mod) ⇒ Object 



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# File 'lib/ruby_ext/core/multiple_inheritance.rb', line 22

def include2 mod
  # unless mod.directly_included_by.include? self
  mod.directly_included_by.add self
  # end

  include mod
  directly_included_by.each do |child|
    child.include2 self
  end
end

#inherit(*modules) ⇒ Object 



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# File 'lib/ruby_ext/core/multiple_inheritance.rb', line 72

def inherit *modules
  modules.each do |mod|
    # Instance Methods
    include2 mod
    
    # Class Methods
    unless self.class_prototype == mod.class_prototype
      if self.class == Module   
# p self => self.class_prototype, mod => mod.class_prototype             
        class_prototype.include2 mod.class_prototype
      else        
        (class << self; self end).include2 mod.class_prototype
      end          
    end
    
    # callback
    # mod.inherited self if mod.respond_to? :inherited
    self.instance_eval &mod.inherited if mod.inherited
  end
end

#inherited(&b) ⇒ Object 



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# File 'lib/ruby_ext/core/multiple_inheritance.rb', line 67

def inherited &b
  @inherited = b if b
  @inherited
end