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Contents
module Concurrent
module Actress
# taken from Algebrick
# supplies type-checking helpers whenever included
module TypeCheck
def Type?(value, *types)
types.any? { |t| value.is_a? t }
end
def Type!(value, *types)
Type?(value, *types) or
TypeCheck.error(value, 'is not', types)
value
end
def Match?(value, *types)
types.any? { |t| t === value }
end
def Match!(value, *types)
Match?(value, *types) or
TypeCheck.error(value, 'is not matching', types)
value
end
def Child?(value, *types)
Type?(value, Class) &&
types.any? { |t| value <= t }
end
def Child!(value, *types)
Child?(value, *types) or
TypeCheck.error(value, 'is not child', types)
value
end
private
def self.error(value, message, types)
raise TypeError,
"Value (#{value.class}) '#{value}' #{message} any of: #{types.join('; ')}."
end
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems