Module: Clojure::Metadata

Included in:
List, Map, Set, Vector
Defined in:
lib/clj/types.rb

Instance Method Summary collapse

Instance Method Details

#metadata ⇒ Object 



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# File 'lib/clj/types.rb', line 18

def metadata
	@metadata ||= Clojure::Map.new
end

#metadata=(value) ⇒ Object 



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# File 'lib/clj/types.rb', line 22

def metadata= (value)
	metadata.merge! case value
		when ::Hash   then value
		when ::Symbol then { value => true }
		when ::String then { :tag => value }
		else raise ArgumentError, 'the passed value is not suitable as metadata'
	end
end

#metadata_to_clj(options = {}) ⇒ Object 



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# File 'lib/clj/types.rb', line 31

def metadata_to_clj (options = {})
	return '' unless options[:metadata] != false && @metadata && !@metadata.empty?

	'^' + if @metadata.length == 1
		piece = @metadata.first

		if piece.first.is_a?(::Symbol) && piece.last == true
			piece.first.to_clj(options)
		elsif piece.first == :tag && piece.last.is_a?(::String)
			piece.last.to_clj(options)
		else
			@metadata.to_clj(options)
		end
	else
		@metadata.to_clj(options)
	end + ' '
end