33 lines
1.2 KiB
Ruby
33 lines
1.2 KiB
Ruby
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# typed: strict
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# frozen_string_literal: true
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module Attrable
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sig { params(attrs: Symbol).void }
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def attr_predicate(*attrs)
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attrs.each do |attr|
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define_method attr do
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instance_variable_get("@#{attr.to_s.sub(/\?$/, "")}") == true
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end
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end
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end
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sig { params(attrs: Symbol).void }
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def attr_rw(*attrs)
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attrs.each do |attr|
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module_eval <<-EOS, __FILE__, __LINE__+1
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def #{attr}(val=nil) # def prefix(val=nil)
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if val.nil? # if val.nil?
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if instance_variable_defined?(:@#{attr}) # if instance_variable_defined?(:@prefix)
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return @#{attr} # return @prefix
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else # else
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return nil # return nil
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end # end
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end # end
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#
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@#{attr} = val # @prefix = val
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end # end
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EOS
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end
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end
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end
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