class Gem::Resolver::Molinillo::DependencyGraph::AddEdgeNoCircular

@!visibility private (see Gem::Resolver::Molinillo::DependencyGraph#add_edge_no_circular)

Attributes

destination[R]

@return [String] the name of the destination of the edge

origin[R]

@return [String] the name of the origin of the edge

requirement[R]

@return [Object] the requirement that the edge represents

Public Class Methods

action_name() click to toggle source

(see Gem::Resolver::Molinillo::DependencyGraph::Action.action_name)

# File lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/add_edge_no_circular.rb, line 10
def self.action_name
  :add_vertex
end

new(origin, destination, requirement) click to toggle source

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

# File lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/add_edge_no_circular.rb, line 50
def initialize(origin, destination, requirement)
  @origin = origin
  @destination = destination
  @requirement = requirement
end

Public Instance Methods

down(graph) click to toggle source

(see Gem::Resolver::Molinillo::DependencyGraph::Action#down)

# File lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/add_edge_no_circular.rb, line 23
def down(graph)
  edge = make_edge(graph)
  delete_first(edge.origin.outgoing_edges, edge)
  delete_first(edge.destination.incoming_edges, edge)
end

make_edge(graph) click to toggle source

@param [DependencyGraph] graph the graph to find vertices from @return [Edge] The edge this action adds

# File lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/add_edge_no_circular.rb, line 42
def make_edge(graph)
  Edge.new(graph.vertex_named(origin), graph.vertex_named(destination), requirement)
end

up(graph) click to toggle source

(see Gem::Resolver::Molinillo::DependencyGraph::Action#up)

# File lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/add_edge_no_circular.rb, line 15
def up(graph)
  edge = make_edge(graph)
  edge.origin.outgoing_edges << edge
  edge.destination.incoming_edges << edge
  edge
end

Private Instance Methods

delete_first(array, item) click to toggle source

# File lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/add_edge_no_circular.rb, line 58
def delete_first(array, item)
  return unless index = array.index(item)
  array.delete_at(index)
end