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

	// initialize instance
	params = this.props('Constructor').value
	if(params == 'None')
		sys.add_var(this.name, 'DeflateStream')
	else
		if(params == 'Constructor')
			params = '' + d("Stream") + ', ' + (isdef("Mode") ? d("Mode") : sys.get_undef_manager("Mode"))
		elseif(params == 'Constructor2')
			params = '' + d("Stream") + ', ' + (isdef("Mode") ? d("Mode") : sys.get_undef_manager("Mode")) + ', ' + d("LeaveOpen")
		end
		sys.add_object(this.codename, 'DeflateStream', params)
	end

	// makes implementation methods for properties
	sys._prop_init('BaseStream', 1, 0, 0)
	sys._prop_init('CanRead', 1, 0, 104)
	sys._prop_init('CanSeek', 1, 0, 104)
	sys._prop_init('CanWrite', 1, 0, 104)

	// makes implementation of methods as properties
	sys._mtd_as_prop_init('DeflateStream')

	// makes implementation of simple methods
	sys._method_init('Close')

	if(linked("onError"))
		this.setfield('ex', 'ex' + this.id)
	end
end

func doConstructor(stream, mode)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.codename, ' = new DeflateStream(', d("Stream"), ', ', isdef("Mode") ? d("Mode") : sys.get_undef_manager("Mode"), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end

func doConstructor2(stream, mode, leaveOpen)
	linked("onError") ? blk.println('try {').inc() : ''
		blk.println(this.codename, ' = new DeflateStream(', d("Stream"), ', ', isdef("Mode") ? d("Mode") : sys.get_undef_manager("Mode"), ', ', d("LeaveOpen"), ');')
	if(linked("onError"))
		blk.dec().println('} catch (Exception ', this.ex, ') {').inc()
			event("onError", this.ex + '.Message')
		blk.dec().println('}')
	end
end