Class: ConceptQL::Converter::Operator

Inherits:
Object
  • Object
show all
Defined in:
lib/conceptql/converter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type, *values) ⇒ Operator

Returns a new instance of Operator.



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# File 'lib/conceptql/converter.rb', line 14

def initialize(type, *values)
  @type, @values = type, values.flatten
  @options = @values.extract_options!.deep_rekey
  @values = @values
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/conceptql/converter.rb', line 13

def options
  @options
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/conceptql/converter.rb', line 13

def type
  @type
end

#values ⇒ Object (readonly)

Returns the value of attribute values.



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# File 'lib/conceptql/converter.rb', line 13

def values
  @values
end

Instance Method Details

#args ⇒ Object 



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# File 'lib/conceptql/converter.rb', line 20

def args
  values.select { |s| !s.is_a?(Operator) }
end

#converted_options ⇒ Object 



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# File 'lib/conceptql/converter.rb', line 28

def converted_options
  options.update_values do |value|
    if value.is_a?(Operator)
      value.to_list_syntax
    else
      value
    end
  end
end

#to_list_syntax ⇒ Object 



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# File 'lib/conceptql/converter.rb', line 38

def to_list_syntax
  stmt = [type]
  stmt += args unless args.empty?
  stmt += upstreams.map(&:to_list_syntax) unless upstreams.empty?
  stmt << converted_options unless options.empty?
  stmt
end

#upstreams ⇒ Object 



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# File 'lib/conceptql/converter.rb', line 24

def upstreams
  values.select { |s| s.is_a?(Operator) }
end