JezK
Edit File: add_vertex.rb
# frozen_string_literal: true require_relative 'action' module Gem::Resolver::Molinillo class DependencyGraph # @!visibility private # (see DependencyGraph#add_vertex) class AddVertex < Action # :nodoc: # @!group Action # (see Action.action_name) def self.action_name :add_vertex end # (see Action#up) def up(graph) if existing = graph.vertices[name] @existing_payload = existing.payload @existing_root = existing.root end vertex = existing || Vertex.new(name, payload) graph.vertices[vertex.name] = vertex vertex.payload ||= payload vertex.root ||= root vertex end # (see Action#down) def down(graph) if defined?(@existing_payload) vertex = graph.vertices[name] vertex.payload = @existing_payload vertex.root = @existing_root else graph.vertices.delete(name) end end # @!group AddVertex # @return [String] the name of the vertex attr_reader :name # @return [Object] the payload for the vertex attr_reader :payload # @return [Boolean] whether the vertex is root or not attr_reader :root # Initialize an action to add a vertex to a dependency graph # @param [String] name the name of the vertex # @param [Object] payload the payload for the vertex # @param [Boolean] root whether the vertex is root or not def initialize(name, payload, root) @name = name @payload = payload @root = root end end end end