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class DoubleException < RuntimeError
end
class GraphViz
class Types
class GvDouble < Common
FLOAT_MASK = /[-+]?(?:[0-9]*\.[0-9]+|[0-9]+)/
def check(data)
if data.kind_of?(Numeric) or (data.is_a?(String) and FLOAT_MASK.match(data))
return data
end
return nil if data.is_a?(String) and data.empty?
raise DoubleException, "Invalid double value for `#{data}`"
end
def output
return @data.to_s.inspect.gsub( "\\\\", "\\" )
end
def to_f
@data.to_f
end
alias :to_gv :output
alias :to_s :output
alias :to_ruby :to_f
end
end
end
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