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86 lines
2.5 KiB
86 lines
2.5 KiB
#-- copyright
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# OpenProject is an open source project management software.
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# Copyright (C) 2012-2022 the OpenProject GmbH
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2013 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# See COPYRIGHT and LICENSE files for more details.
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#++
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class Authorization::QueryTransformationsOrder
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def initialize
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self.array = []
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end
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delegate :<<, :map, to: :array
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def full_order
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partial_orders = transformation_partial_orders
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merge_transformation_partial_orders(partial_orders)
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end
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private
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attr_accessor :array
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def transformation_partial_orders
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map do |transformation|
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transformation.after + [transformation.name] + transformation.before
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end
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end
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def merge_transformation_partial_orders(partial_orders)
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desired_order = []
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until partial_orders.empty?
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order = partial_orders.shift
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shift_first_if_its_turn(order, partial_orders) do |first|
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desired_order << first
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end
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partial_orders.push(order) unless order.empty?
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end
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desired_order
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end
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def shift_first_if_its_turn(order, partial_orders)
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@rejected ||= []
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if first_not_included_or_first_everywhere(order, partial_orders)
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partial_orders.select { |o| o[0] == order[0] }.each(&:shift)
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@rejected.clear
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yield order.shift
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else
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raise "Cannot sort #{order} into the list of transformations" if @rejected.include?(order)
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@rejected << order
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end
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end
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def first_not_included_or_first_everywhere(order, partial_orders)
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partial_orders.all? { |o| !o.include?(order[0]) || o[0] == order[0] }
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end
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end
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