func init
	if(linked("Line") and linked("doReadLine"))
		sys.add_var_extern('line_', 'string')
	end
	if(linked("CharInt") and linked("doRead"))
		sys.add_var_extern('char_', 'int')
	end
end

func doWrite(data)
	blk.println(d('Stream'), '.Write(', d("Data"), ');')
end

func doWriteLine(data)
	blk.println(d('Stream'), '.WriteLine(', d("Data"), ');')
end

func make_readline(data)
	return(d('Stream') && '.ReadLine()')
end

func doReadLine(data)
	if(linked("Line"))
		blk.println(this.line_, ' = ', make_readline(data), ';')
		event("onReadLine", this.line_)
	else
		event("onReadLine", make_readline(data))
	end
end

func Line
	if(linked("doReadLine"))
		return(this.line_)
	else
		return(make_readline())
	end
end

func make_read(data)
	return(d('Stream') + '.Read()')
end

func doRead(data)
	if(linked("CharInt"))
		blk.println(this.char_, ' = ', make_read(data), ';')
		event("onRead", this.char_)
	else
		event("onRead", make_read(data))
	end
end

func CharInt
	if(linked("doRead"))
		return(this.char_)
	else
		return(make_read())
	end
end