class HashStruct

# File lib/hashstruct.rb, line 6
def initialize(args={})
  super()
  args.each { |key, value| self[key] = value }
end

# File lib/hashstruct.rb, line 11
def [](key)
  key = key.to_sym
  if methods.include?(key)
    method(key).call
  elsif has_key?(key)
    fetch(key)
  else
    nil
  end
end

# File lib/hashstruct.rb, line 22
def []=(key, value)
  if methods.include?(:"#{key}=")
    method(:"#{key}=").call(convert_object(value))
  else
    store(key.to_s.to_sym, convert_object(value))
  end
end

# File lib/hashstruct.rb, line 42
def convert_object(obj)
  case obj
  when String
    case obj
    # URI
    when %r{^(ftp|http|https|mailto):}
      URI.parse(obj) rescue obj
    # integer
    when %r{^-?[1-9][\d,]*$}
      obj.gsub(/,/, '').to_i
    # hex integer
    when %r{^0x[0-9a-f]+$}i
      obj.hex
    # float
    when %r{^-?[\d,]+\.\d+$}
      obj.gsub(/,/, '').to_f
    # percent
    when %r{^-?[\d,]+(\.\d+)?%$}
      obj.to_f / 100
    # rational
    when %r{^(\d+)/(\d+)$}
      Rational($1.to_i, $2.to_i)
    # date
    when %r{^\d{4}-\d{2}-\d{2}},      # 2010-06-06
         %r{^\d{1,2}/\d{1,2}/\d{4}},  # 06/06/2010
         %r{^\d{4}/\d{1,2}/\d{1,2}},  # 2010/06/06
         %r{^(Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun),?\s*\d*\s*\b(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\b}  # Sun, 06 Jun 2010 23:02:25 GMT
      DateTime.parse(obj)
    # boolean true
    when 'true', 'yes', 'on'
      true
    # boolean false
    when 'false', 'no', 'off'
      false
    else
      obj
    end
  when Array
    obj.map { |o| convert_object(o) }
  when Hash
    HashStruct.new(obj)
  when HashStruct
    obj
  else
    obj
  end
end

# File lib/hashstruct.rb, line 30
def method_missing(method_id, *args)
  method_name = method_id.to_s
  if method_name =~ /=$/
    raise ArgumentError, "wrong number of arguments for method #{method_name.inspect} (#{args.length} for 1)", caller(1) if args.length != 1
    raise TypeError, "can't modify frozen #{self.class}", caller(1) if self.frozen?
    self[method_name.chop.to_sym] = args.first
  else
    raise ArgumentError, "wrong number of arguments (#{args.length} for 0)", caller(1) if args.length != 0
    self[method_id]
  end
end