Module: Diff

Included in:
Array, Hash
Defined in:
lib/diff.rb

Instance Method Summary collapse

Instance Method Details

#diff(other, recursive = true) ⇒ Object 



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# File 'lib/diff.rb', line 11

def diff(other, recursive=true)
  gen_diff(other, recursive) {|a, b| a == b}
end

#gen_diff(other, recursive = true, &comp) ⇒ Object 



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# File 'lib/diff.rb', line 15

def gen_diff(other, recursive=true, &comp)
  result = {
    :similar => {},
    :different => {},
    :missing => {},
    :additional => {}
  }
  if not other.is_a?(self.class)
    result[:different] = {:self => self.class, :other => other.class}
    return result
  end
  self.each_pair do |k, v|
    if other.has_key?(k)
      if comp[v, other[k]]
        result[:similar][k] = v
      else
        if recursive and v.respond_to?(:gen_diff)
          diff_result = v.gen_diff(other[k], recursive, &comp)
        else
          diff_result = {:self => v, :other => other[k]}
        end
        result[:different][k] = diff_result unless diff_result.no_diff?
      end
    else
      result[:additional][k] = v
    end
  end
  other.each_pair do |k, v|
    if not self.has_key?(k)
      result[:missing][k] = v
    end
  end
  result
end

#no_diff? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/diff.rb', line 50

def no_diff?
  self[:different] == {} and self[:missing] == {} and self[:additional] == {}
end