Scanner
Here is the scanner, implemented in NUT. lex.txt
the Finite State Machine for this scanner is shown below:
b is a space (space, newline)
the separators are: space, (, )
start at state 1
if input is space skip them
if input is ( out (
if input is ) out )
if input is " goto state 3 (accept string)
otherwise goto state 2 (accept name)
state 2
if input is character aceept them
if input is a seperator out token and backup one input
state 3
if input is " (end of string) out string
otherwise collect all characters
Here is the source code for lex.txt
You have to use the new virtual machine to run it. (nvm34.exe in the
package nut34.zip)
last update 19 July 2010