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# frozen_string_literal: true
# Represents Dag pipeline
module Gitlab
module Ci
class YamlProcessor
class Dag
include TSort
def initialize(nodes)
@nodes = nodes
end
def self.order(jobs)
new(jobs).tsort
end
def self.check_circular_dependencies!(jobs)
new(jobs).tsort
rescue TSort::Cyclic
raise ValidationError, 'The pipeline has circular dependencies'
end
def tsort_each_child(node, &block)
return unless @nodes[node]
@nodes[node].each(&block)
end
def tsort_each_node(&block)
@nodes.each_key(&block)
end
end
end
end
end
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