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class CharacterSet
module SetMethodAdapters
# Allow some methods to work with String in addition to Integer args
# (the internal representation is geared towards codepoint Integers).
%w[add add? << delete delete? include? member? ===].each do |method|
class_eval <<-RUBY, __FILE__, __LINE__ + 1
def #{method}(arg)
case arg
when String
super(arg.ord)
when Integer
if arg < 0 || arg > 0x10FFFF
raise ArgumentError, 'pass an Integer between 0 and 0x10FFFF'
end
super(arg)
else
raise ArgumentError, 'pass a String or an Integer'
end
end
RUBY
end
# Allow some methods to take an Enum just as well as another CharacterSet.
# Tested by ruby-spec.
%w[& + - ^ | <=> difference disjoint? intersect? intersection
subtract union].each do |method|
class_eval <<-RUBY, __FILE__, __LINE__ + 1
def #{method}(arg)
if arg.is_a?(CharacterSet)
super(arg)
elsif arg.respond_to?(:each)
super(self.class.new(arg.to_a))
else
raise ArgumentError, 'pass an enumerable'
end
end
RUBY
end
end
end
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