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Contents
# frozen_string_literal: true
require_relative 'action'
module Bundler::Molinillo
class DependencyGraph
# @!visibility private
# (see DependencyGraph#add_edge_no_circular)
class AddEdgeNoCircular < Action
# @!group Action
# (see Action.action_name)
def self.action_name
:add_vertex
end
# (see Action#up)
def up(graph)
edge = make_edge(graph)
edge.origin.outgoing_edges << edge
edge.destination.incoming_edges << edge
edge
end
# (see Action#down)
def down(graph)
edge = make_edge(graph)
delete_first(edge.origin.outgoing_edges, edge)
delete_first(edge.destination.incoming_edges, edge)
end
# @!group AddEdgeNoCircular
# @return [String] the name of the origin of the edge
attr_reader :origin
# @return [String] the name of the destination of the edge
attr_reader :destination
# @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), graph.vertex_named(destination), requirement)
end
# Initialize an action to add an edge to a dependency graph
# @param [String] origin the name of the origin of the edge
# @param [String] destination the name of the destination of the edge
# @param [Object] requirement the requirement that the edge represents
def initialize(origin, destination, requirement)
@origin = origin
@destination = destination
@requirement = requirement
end
private
def delete_first(array, item)
return unless index = array.index(item)
array.delete_at(index)
end
end
end
end
Version data entries
151 entries across 151 versions & 4 rubygems