func init
	// adds using namespace
	sys.add_use('System')

	// initialize instance
	if(linked("Result"))
		sys.add_var(this.name, 'dynamic')
	end

	// initialize properties
	this.cult = sys.get_undef_manager("Provider")

	// initialize methods
	this.setfield('fname', fname)
	sys._do_init('GetTypeCode')
	sys._do_init('IsDBNull')
	sys._do_init('ToBoolean')
	sys._do_init('ToByte')
	sys._do_init('ToByteBase')
	sys._do_init('ToChar')
	sys._do_init('ToDateTime')
	sys._do_init('ToDecimal')
	sys._do_init('ToDouble')
	sys._do_init('ToShort')
	sys._do_init('ToShortBase')
	sys._do_init('ToInt')
	sys._do_init('ToIntBase')
	sys._do_init('ToLong')
	sys._do_init('ToLongBase')
	sys._do_init('ToSByte')
	sys._do_init('ToSByteBase')
	sys._do_init('ToSingle')
	sys._do_init('ToString')
	sys._do_init('ToStringBase')
	sys._do_init('ToUShort')
	sys._do_init('ToUShortBase')
	sys._do_init('ToUInt')
	sys._do_init('ToUIntBase')
	sys._do_init('ToULong')
	sys._do_init('ToULongBase')
end

func implement(data, f)
	dt = d("Value")
	this.typecode = this.get_typecode(f)
	if(linked("Result"))
		blk.println(this.codename, ' = ', this.make_result(dt, f), ';')
		event("onResult", sub(this.codename, this.typecode))
	else
		event("onResult", sub(this.make_result(dt, f), this.typecode))
	end
end

func make_result(dt, f)
	if(f == "doGetTypeCode")
		return('Convert.GetTypeCode(' + dt + ')')
	elseif(f == "doIsDBNull")
		return('Convert.IsDBNull(' + dt + ')')
	elseif(f == "doToBoolean")
		return('Convert.ToBoolean(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToByte")
		return('Convert.ToByte(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToByteBase")
		return('Convert.ToByte(' + dt + ', ' + this.props("Base").value + ')')
	elseif(f == "doToChar")
		return('Convert.ToChar(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToDateTime")
		return('Convert.ToDateTime(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToDecimal")
		return('Convert.ToDecimal(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToDouble")
		return('Convert.ToDouble(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToShort")
		return('Convert.ToInt16(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToShortBase")
		return('Convert.ToInt16(' + dt + ', ' + this.props("Base").value + ')')
	elseif(f == "doToInt")
		return('Convert.ToInt32(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToIntBase")
		return('Convert.ToInt32(' + dt + ', ' + this.props("Base").value + ')')
	elseif(f == "doToLong")
		return('Convert.ToInt64(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToLongBase")
		return('Convert.ToInt64(' + dt + ', ' + this.props("Base").value + ')')
	elseif(f == "doToSByte")
		return('Convert.ToSByte(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToSByteBase")
		return('Convert.ToSByte(' + dt + ', ' + this.props("Base").value + ')')
	elseif(f == "doToSingle")
		return('Convert.ToSingle(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToString")
		return('Convert.ToString(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToStringBase")
		return('Convert.ToString(' + dt + ', ' + this.props("Base").value + ')')
	elseif(f == "doToUShort")
		return('Convert.ToUInt16(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToUShortBase")
		return('Convert.ToUInt16(' + dt + ', ' + this.props("Base").value + ')')
	elseif(f == "doToUInt")
		return('Convert.ToUInt32(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToUIntBase")
		return('Convert.ToUInt32(' + dt + ', ' + this.props("Base").value + ')')
	elseif(f == "doToULong")
		return('Convert.ToUInt64(' + dt + (isdef("Provider") ? '' : (', ' + this.cult)) + ')')
	elseif(f == "doToULongBase")
		return('Convert.ToUInt64(' + dt + ', ' + this.props("Base").value + ')')
	end
end

func DBNull
	return('Convert.DBNull')
end

func Result
	return(this.codename)
end

func get_typecode(f)
	arr = regex_search(f, 'doTo(\\w+?)(Base|$)')
	if(arr.size())
		return(sys.type_code(arr.get(1)))
	end
	return(0)
end