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Class: Gem::Molinillo::DependencyGraph::AddVertex

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Action
Instance Chain:
self, Action
Inherits: Gem::Molinillo::DependencyGraph::Action
Defined in: lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/add_vertex.rb

Overview

(see #add_vertex)

Action

AddVertex

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(name, payload, root) ⇒ AddVertex

Initialize an action to add a vertex to a dependency graph

Parameters:

  • name (String) —

    the name of the vertex

  • payload (Object) —

    the payload for the vertex

  • root (Boolean) —

    whether the vertex is root or not

[ GitHub ] 

  


# File 'lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/add_vertex.rb', line 55



def initialize(name, payload, root)
  @name = name
  @payload = payload
  @root = root
end


  







Class Method Details



  

    .action_name  ⇒ Symbol 
  



  

    
  





  
Returns:


    
  
  • 
    (Symbol)
—    
    

    The name of the action.
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/add_vertex.rb', line 12



def self.action_name
  :add_vertex
end


  







Instance Attribute Details



  

    #name  ⇒ String  (readonly)
  



  

    
  





  
Returns:


    
  
  • 
    (String)
—    
    

    the name of the vertex
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/add_vertex.rb', line 43



attr_reader :name


  








  

    #payload  ⇒ Object  (readonly)
  



  

    
  





  
Returns:


    
  
  • 
    (Object)
—    
    

    the payload for the vertex
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/add_vertex.rb', line 46



attr_reader :payload


  








  

    #root  ⇒ Boolean  (readonly)
  



  

    
  





  
Returns:


    
  
  • 
    (Boolean)
—    
    

    whether the vertex is root or not
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/add_vertex.rb', line 49



attr_reader :root


  







Instance Method Details



  

    #down(graph)  ⇒ Void 
  



  

    

Reverses the action on the given graph.


  





  
Parameters:





  [ GitHub ]


  

  


# File 'lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/add_vertex.rb', line 30



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


  








  

    #up(graph)  ⇒ Void 
  



  

    

Performs the action on the given graph.


  





  
Parameters:





  [ GitHub ]


  

  


# File 'lib/rubygems/vendor/molinillo/lib/molinillo/dependency_graph/add_vertex.rb', line 17



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