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Class: Gem::Resolver::Molinillo::DependencyGraph::DeleteEdge

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Action
Instance Chain:
self, Action
Inherits: Gem::Resolver::Molinillo::DependencyGraph::Action
Defined in: lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb

Overview

(see #delete_edge)

Action

DeleteEdge

Class Method Summary

Action - Inherited

.action_name

Instance Attribute Summary

Action - Inherited

#next, #previous

Instance Method Summary

Action - Inherited

#down

Reverses the action on the given graph.
#up

Performs the action on the given graph.

Constructor Details

.new(origin_name, destination_name, requirement) ⇒ DeleteEdge

Initialize an action to add an edge to a dependency graph

Parameters:

  • origin_name (String) —

    the name of the origin of the edge

  • destination_name (String) —

    the name of the destination of the edge

  • requirement (Object) —

    the requirement that the edge represents

[ GitHub ] 

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb', line 56



def initialize(origin_name, destination_name, requirement)
  @origin_name = origin_name
  @destination_name = destination_name
  @requirement = requirement
end


  







Class Method Details



  

    .action_name  ⇒ Symbol 
  



  

    
  





  
Returns:


    
  
  • 
    (Symbol)
—    
    

    The name of the action.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb', line 12



def self.action_name
  :delete_edge
end


  







Instance Attribute Details



  

    #destination_name  ⇒ String  (readonly)
  



  

    
  





  
Returns:


    
  
  • 
    (String)
—    
    

    the name of the destination of the edge
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb', line 37



attr_reader :destination_name


  








  

    #origin_name  ⇒ String  (readonly)
  



  

    
  





  
Returns:


    
  
  • 
    (String)
—    
    

    the name of the origin of the edge
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb', line 34



attr_reader :origin_name


  








  

    #requirement  ⇒ Object  (readonly)
  



  

    
  





  
Returns:


    
  
  • 
    (Object)
—    
    

    the requirement that the edge represents
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb', line 40



attr_reader :requirement


  







Instance Method Details



  

    #down(graph)  ⇒ Void 
  



  

    

Reverses the action on the given graph.


  





  
Parameters:





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb', line 24



def down(graph)
  edge = make_edge(graph)
  edge.origin.outgoing_edges << edge
  edge.destination.incoming_edges << edge
  edge
end


  








  

    #make_edge(graph)  ⇒ Edge 
  



  

    
  





  
Parameters:



Returns:


    
  
  • 
    (Edge)
—    
    

    The edge this action adds
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb', line 44



def make_edge(graph)
  Edge.new(
    graph.vertex_named(origin_name),
    graph.vertex_named(destination_name),
    requirement
  )
end


  








  

    #up(graph)  ⇒ Void 
  



  

    

Performs the action on the given graph.


  





  
Parameters:





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb', line 17



def up(graph)
  edge = make_edge(graph)
  edge.origin.outgoing_edges.delete(edge)
  edge.destination.incoming_edges.delete(edge)
end