Class: ImmutableSet::SetChange

Inherits:
Object
  • Object
show all
Defined in:
lib/values/immutable_set.rb

Instance Method Summary collapse

Constructor Details

#initialize(values, set, add, set_change) ⇒ SetChange

Returns a new instance of SetChange.



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# File 'lib/values/immutable_set.rb', line 126

def initialize values,set,add,set_change
  
  raise "set must be supplied" unless set
  raise "values must be supplied" unless values
  
  @values = values
  @set = set
  @add = add
  @set_change = set_change
  @depth = 0
  
  if set_change
    # We need to unrole when we have a depth of more than 500 so that we dont couse a SystemStackError
    if set_change.depth > 4000
      @set_change = nil
      @set = set_change.unrole
    else
      @depth = set_change.depth + 1
    end
  end
end

Instance Method Details

#add_change_to_set(set) ⇒ Object 



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# File 'lib/values/immutable_set.rb', line 156

def add_change_to_set set
  
  @set_change.add_change_to_set(set) if @set_change
  
  if @add
    @values.each do |value|
      if value.is_a? ImmutableSet
        set.merge(value.to_a)
      elsif value.is_a? Set
        set.merge(value)
      elsif value.is_a? Array
        set.merge(value)
      else
        set.add(value)
      end
    end
  else
    @values.each do |value|
      if value.is_a? ImmutableSet
        set.subtract(value.to_a)
      elsif value.is_a? Set
        set.subtract(value)
      elsif value.is_a? Array
        set.subtract(value)
      else
        set.delete(value)
      end
    end
  end
  
  set
end

#depth ⇒ Object 



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# File 'lib/values/immutable_set.rb', line 152

def depth
  @depth
end

#set ⇒ Object 



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# File 'lib/values/immutable_set.rb', line 148

def set
  @set
end

#unrole ⇒ Object 



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# File 'lib/values/immutable_set.rb', line 189

def unrole
  self.add_change_to_set(@set.clone)
end