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Class: Gem::Resolver::Molinillo::DependencyGraph::Log

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Enumerable
Inherits: Object
Defined in: lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb

Overview

A log for dependency graph actions

Class Method Summary

Instance Method Summary

Constructor Details

.new ⇒ Log

Initializes an empty log

[ GitHub ] 

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 14



def initialize
  @current_action = @first_action = nil
end


  







Instance Method Details



  

    #add_edge_no_circular(graph, origin, destination, requirement)  
  



  

    



  





  
Parameters:


    
  
  • 
    graph
    (Graph)
—    
    

    the graph to perform the action on
    

    
  
    • 





  [ GitHub ]


  

  


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



def add_edge_no_circular(graph, origin, destination, requirement)
  push_action(graph, AddEdgeNoCircular.new(origin, destination, requirement))
end


  








  

    #add_vertex(graph, name, payload, root)  
  



  

    



  





  
Parameters:


    
  
  • 
    graph
    (Graph)
—    
    

    the graph to perform the action on
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 30



def add_vertex(graph, name, payload, root)
  push_action(graph, AddVertex.new(name, payload, root))
end


  








  

    #delete_edge(graph, origin_name, destination_name, requirement)  
  



  

    



  





  
Parameters:


    
  
  • 
    graph
    (Graph)
—    
    

    the graph to perform the action on
    

    
  
    • 
  
  • 
    origin_name
    (String)
  
    • 
  
  • 
    destination_name
    (String)
  
    • 
  
  • 
    requirement
    (Object)
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 50



def delete_edge(graph, origin_name, destination_name, requirement)
  push_action(graph, DeleteEdge.new(origin_name, destination_name, requirement))
end


  








  

    #detach_vertex_named(graph, name)  
  



  

    



  





  
Parameters:


    
  
  • 
    graph
    (Graph)
—    
    

    the graph to perform the action on
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 35



def detach_vertex_named(graph, name)
  push_action(graph, DetachVertexNamed.new(name))
end


  








  

    #each {|Action| ... }  (private)
  



  

    

Enumerates each action in the log


  





  
Yields:





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 76



def each
  return enum_for unless block_given?
  action = @first_action
  loop do
    break unless action
    yield action
    action = action.next
  end
  self
end


  








  

    #pop!(graph)  ⇒ Action 
  



  

    

Pops the most recent action from the log and undoes the action


  





  
Parameters:



Returns:


    
  
  • 
    (Action)
—    
    

    the action that was popped off the log
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 62



def pop!(graph)
  return unless action = @current_action
  unless @current_action = action.previous
    @first_action = nil
  end
  action.down(graph)
  action
end


  








  

    #push_action(graph, action)  ⇒ Object  (private)
  



  

    

Adds the given action to the log, running the action


  





  
Parameters:



Returns:


    
  
  • 
    
    
    

    The value returned by action.up
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 116



def push_action(graph, action)
  action.previous = @current_action
  @current_action.next = action if @current_action
  @current_action = action
  @first_action ||= action
  action.up(graph)
end


  








  

    #reverse_each {|Action| ... }  (private)
  



  

    

Enumerates each action in the log in reverse order


  





  
Yields:





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 90



def reverse_each
  return enum_for(:reverse_each) unless block_given?
  action = @current_action
  loop do
    break unless action
    yield action
    action = action.previous
  end
  self
end


  








  

    #rewind_to(graph, tag)  
  



  

    



  





  
Parameters:


    
  
  • 
    graph
    (Graph)
—    
    

    the graph to perform the action on
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 102



def rewind_to(graph, tag)
  loop do
    action = pop!(graph)
    raise "No tag #{tag.inspect} found" unless action
    break if action.class.action_name == :tag && action.tag == tag
  end
end


  








  

    #set_payload(graph, name, payload)  
  



  

    



  





  
Parameters:


    
  
  • 
    graph
    (Graph)
—    
    

    the graph to perform the action on
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 55



def set_payload(graph, name, payload)
  push_action(graph, SetPayload.new(name, payload))
end


  








  

    #tag(graph, tag)  
  



  

    



  





  
Parameters:


    
  
  • 
    graph
    (Graph)
—    
    

    the graph to perform the action on
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb', line 25



def tag(graph, tag)
  push_action(graph, Tag.new(tag))
end