def _NumberDFA():
dfa = DFA()
dfa.addStates(["number_0", "NUMBER"])
dfa.state = dfa.states[0]
dfa.final = dfa.states[-1]
dfa.addTransition("number_0", "NUMBER", DIGITS)
dfa.addTransition("NUMBER", "NUMBER", DIGITS)
return dfa
def _IdentifierDFA():
dfa = DFA()
dfa.addStates(["id0", "idfin"])
dfa.state = dfa.states[0]
dfa.final = dfa.states[-1]
dfa.addTransition("id0", "idfin", LETTERS + "_")
dfa.addTransition("idfin", "idfin", DIGITS + LETTERS + "_")
return dfa
def _LineCommentDFA():
dfa = DFA()
dfa.addStates(["lc0", "lc1", "lcloop", "lcfin"])
dfa.state = dfa.states[0]
dfa.setFinal("lcfin")
dfa.addTransition("lc0", "lc1", "-")
dfa.addTransition("lc1", "lcloop", "-")
dfa.addTransition("lcloop", "lcloop", LETTERS + DIGITS + OTHERS + " \t")
dfa.addTransition("lcloop", "lcfin", "\n")
return dfa
def _LiteralDFA():
dfa = DFA()
dfa.addStates(["l0", "lloop", "lescape", "lfin"])
dfa.state = dfa.states[0]
dfa.setFinal("lfin")
dfa.addTransition("l0", "lloop", "\"")
loopchars = (LETTERS + DIGITS + OTHERS + " \n\r\t").replace("\\", "").replace("\"", "")
dfa.addTransition("lloop", "lloop", loopchars)
dfa.addTransition("lloop", "lescape", "\\")
dfa.addTransition("l0", "lescape", "\\")
dfa.addTransition("lescape", "lloop", "ntr\"\'\\")
dfa.addTransition("lloop", "lfin", "\"")
return dfa
def _MultiLineCommentDFA():
dfa = DFA()
dfa.addStates(["q0", "q1", "q2", "q3", "qloop", "q4", "q5"])
dfa.state = "q0"
dfa.setFinal("q5")
dfa.addTransition("q0", "q1", "-")
dfa.addTransition("q1", "q2", "-")
dfa.addTransition("q2", "q3", "[")
dfa.addTransition("q3", "qloop", "[")
loopchars = (LETTERS + DIGITS + OTHERS + " \t\n\r").replace("]", "")
dfa.addTransition("qloop", "qloop", loopchars)
dfa.addTransition("qloop", "q4", "]")
dfa.addTransition("q4", "qloop", loopchars)
dfa.addTransition("q4", "q5", "]")
return dfa
