1 files changed, 63 insertions, 0 deletions
diff --git a/lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/delete_edge.rb b/lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/delete_edge.rb
new file mode 100644
index 0000000000..1e62c0a0b6
--- /dev/null
+++ b/lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/delete_edge.rb
@@ -0,0 +1,63 @@
+# frozen_string_literal: true
+
+require_relative 'action'
+module Gem::Molinillo
+  class DependencyGraph
+    # @!visibility private
+    # (see DependencyGraph#delete_edge)
+    class DeleteEdge < Action
+      # @!group Action
+
+      # (see Action.action_name)
+      def self.action_name
+        :delete_edge
+      end
+
+      # (see Action#up)
+      def up(graph)
+        edge = make_edge(graph)
+        edge.origin.outgoing_edges.delete(edge)
+        edge.destination.incoming_edges.delete(edge)
+      end
+
+      # (see Action#down)
+      def down(graph)
+        edge = make_edge(graph)
+        edge.origin.outgoing_edges << edge
+        edge.destination.incoming_edges << edge
+        edge
+      end
+
+      # @!group DeleteEdge
+
+      # @return [String] the name of the origin of the edge
+      attr_reader :origin_name
+
+      # @return [String] the name of the destination of the edge
+      attr_reader :destination_name
+
+      # @return [Object] the requirement that the edge represents
+      attr_reader :requirement
+
+      # @param  [DependencyGraph] graph the graph to find vertices from
+      # @return [Edge] The edge this action adds
+      def make_edge(graph)
+        Edge.new(
+          graph.vertex_named(origin_name),
+          graph.vertex_named(destination_name),
+          requirement
+        )
+      end
+
+      # Initialize an action to add an edge to a dependency graph
+      # @param [String] origin_name the name of the origin of the edge
+      # @param [String] destination_name the name of the destination of the edge
+      # @param [Object] requirement the requirement that the edge represents
+      def initialize(origin_name, destination_name, requirement)
+        @origin_name = origin_name
+        @destination_name = destination_name
+        @requirement = requirement
+      end
+    end
+  end
+end