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Class: Gem::Resolver::RequirementList

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

Overview

The RequirementList is used to hold the requirements being considered while resolving a set of gems.

The RequirementList acts like a queue where the oldest items are removed first.

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new ⇒ RequirementList

Creates a new RequirementList.

[ GitHub ] 

  


# File 'lib/rubygems/resolver/requirement_list.rb', line 16



def initialize
  @exact = []
  @list = []
end


  







Instance Attribute Details



  

    #empty?  ⇒ Boolean  (readonly)
  



  

    

Is the list empty?


  





  


  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/requirement_list.rb', line 63



def empty?
  @exact.empty? && @list.empty?
end


  







Instance Method Details



  

    #add(req)  
  



  

    

Adds DependencyRequest req to this requirements list.


  



  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/requirement_list.rb', line 29



def add(req)
  if req.requirement.exact?
    @exact.push req
  else
    @list.push req
  end
  req
end


  








  

    #each  
  

  

    This method is for internal use only.
  



  

    

Enumerates requirements in the list


  



  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/requirement_list.rb', line 41



def each # :nodoc:
  return enum_for __method__ unless block_given?

  @exact.each do |requirement|
    yield requirement
  end

  @list.each do |requirement|
    yield requirement
  end
end


  








  

    #initialize_copy(other)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/requirement_list.rb', line 21



def initialize_copy other # :nodoc:
  @exact = @exact.dup
  @list = @list.dup
end


  








  

    #next5  
  



  

    

Returns the oldest five entries from the list.


  



  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/requirement_list.rb', line 78



def next5
  x = @exact[0,5]
  x + @list[0,5 - x.size]
end


  








  

    #remove  
  



  

    

Remove the oldest DependencyRequest from the list.


  



  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/requirement_list.rb', line 70



def remove
  return @exact.shift unless @exact.empty?
  @list.shift
end


  








  

    #size  
  



  

    

How many elements are in the list


  



  [ GitHub ]


  

  


# File 'lib/rubygems/resolver/requirement_list.rb', line 56



def size
  @exact.size + @list.size
end