private State transition(Typechar c) {
return table_f[current_state.ordinal()][c.ordinal()];
}
public Lexer(Reader in) throws IOException {
reader = new BufferedReader(in);
current_char = (char) reader.read();
// initialize the table for FSM
// TODO: refactor with static initializer
final int ROWS = State.SFINAL.ordinal();
final int COLS = Typechar.values().length;
table_f = new State[ROWS][COLS];
// initialize the FSM itself
table_f[State.S_INITIAL.ordinal()][Typechar.TC_QUOTE.ordinal()] = State.S_STRING;
table_f[State.S_INITIAL.ordinal()][Typechar.TC_LPAREN.ordinal()] = State.SFINAL_LPAREN;
table_f[State.S_INITIAL.ordinal()][Typechar.TC_RPAREN.ordinal()] = State.SFINAL_RPAREN;
table_f[State.S_INITIAL.ordinal()][Typechar.TC_DOT.ordinal()] = State.S_FLOAT;
table_f[State.S_INITIAL.ordinal()][Typechar.TC_HYPHEN.ordinal()] = State.S_HYPHEN;
table_f[State.S_INITIAL.ordinal()][Typechar.TC_DIGIT.ordinal()] = State.S_NUMERIC;
table_f[State.S_INITIAL.ordinal()][Typechar.TC_IDSTART.ordinal()] = State.S_ID;
table_f[State.S_INITIAL.ordinal()][Typechar.TC_OTHER.ordinal()] = State.SFINAL_ERROR;
table_f[State.S_STRING.ordinal()][Typechar.TC_QUOTE.ordinal()] = State.SFINAL_STRING;
table_f[State.S_STRING.ordinal()][Typechar.TC_LPAREN.ordinal()] = State.S_STRING;
table_f[State.S_STRING.ordinal()][Typechar.TC_RPAREN.ordinal()] = State.S_STRING;
table_f[State.S_STRING.ordinal()][Typechar.TC_DOT.ordinal()] = State.S_STRING;
table_f[State.S_STRING.ordinal()][Typechar.TC_HYPHEN.ordinal()] = State.S_STRING;
table_f[State.S_STRING.ordinal()][Typechar.TC_DIGIT.ordinal()] = State.S_STRING;
table_f[State.S_STRING.ordinal()][Typechar.TC_IDSTART.ordinal()] = State.S_STRING;
table_f[State.S_STRING.ordinal()][Typechar.TC_OTHER.ordinal()] = State.S_STRING;
table_f[State.S_NUMERIC.ordinal()][Typechar.TC_QUOTE.ordinal()] = State.SFINAL_INTEGER;
table_f[State.S_NUMERIC.ordinal()][Typechar.TC_LPAREN.ordinal()] = State.SFINAL_INTEGER;
table_f[State.S_NUMERIC.ordinal()][Typechar.TC_RPAREN.ordinal()] = State.SFINAL_INTEGER;
table_f[State.S_NUMERIC.ordinal()][Typechar.TC_DOT.ordinal()] = State.S_FLOAT;
table_f[State.S_NUMERIC.ordinal()][Typechar.TC_HYPHEN.ordinal()] = State.SFINAL_INTEGER;
table_f[State.S_NUMERIC.ordinal()][Typechar.TC_DIGIT.ordinal()] = State.S_NUMERIC;
table_f[State.S_NUMERIC.ordinal()][Typechar.TC_IDSTART.ordinal()] = State.SFINAL_INTEGER;
table_f[State.S_NUMERIC.ordinal()][Typechar.TC_OTHER.ordinal()] = State.SFINAL_INTEGER;
table_f[State.S_FLOAT.ordinal()][Typechar.TC_QUOTE.ordinal()] = State.SFINAL_FLOAT;
table_f[State.S_FLOAT.ordinal()][Typechar.TC_LPAREN.ordinal()] = State.SFINAL_FLOAT;
table_f[State.S_FLOAT.ordinal()][Typechar.TC_RPAREN.ordinal()] = State.SFINAL_FLOAT;
table_f[State.S_FLOAT.ordinal()][Typechar.TC_DOT.ordinal()] = State.S_FLOAT;
table_f[State.S_FLOAT.ordinal()][Typechar.TC_HYPHEN.ordinal()] = State.SFINAL_FLOAT;
table_f[State.S_FLOAT.ordinal()][Typechar.TC_DIGIT.ordinal()] = State.S_FLOAT;
table_f[State.S_FLOAT.ordinal()][Typechar.TC_IDSTART.ordinal()] = State.SFINAL_FLOAT;
table_f[State.S_FLOAT.ordinal()][Typechar.TC_OTHER.ordinal()] = State.SFINAL_FLOAT;
table_f[State.S_ID.ordinal()][Typechar.TC_QUOTE.ordinal()] = State.SFINAL_ID;
table_f[State.S_ID.ordinal()][Typechar.TC_LPAREN.ordinal()] = State.SFINAL_ID;
table_f[State.S_ID.ordinal()][Typechar.TC_RPAREN.ordinal()] = State.SFINAL_ID;
table_f[State.S_ID.ordinal()][Typechar.TC_DOT.ordinal()] = State.S_ID;
table_f[State.S_ID.ordinal()][Typechar.TC_HYPHEN.ordinal()] = State.SFINAL_ID;
table_f[State.S_ID.ordinal()][Typechar.TC_DIGIT.ordinal()] = State.S_ID;
table_f[State.S_ID.ordinal()][Typechar.TC_IDSTART.ordinal()] = State.S_ID;
table_f[State.S_ID.ordinal()][Typechar.TC_OTHER.ordinal()] = State.SFINAL_ID;
table_f[State.S_HYPHEN.ordinal()][Typechar.TC_QUOTE.ordinal()] = State.SFINAL_ID;
table_f[State.S_HYPHEN.ordinal()][Typechar.TC_LPAREN.ordinal()] = State.SFINAL_ID;
table_f[State.S_HYPHEN.ordinal()][Typechar.TC_RPAREN.ordinal()] = State.SFINAL_ID;
table_f[State.S_HYPHEN.ordinal()][Typechar.TC_DOT.ordinal()] = State.S_FLOAT;
table_f[State.S_HYPHEN.ordinal()][Typechar.TC_HYPHEN.ordinal()] = State.S_ID;
table_f[State.S_HYPHEN.ordinal()][Typechar.TC_DIGIT.ordinal()] = State.S_NUMERIC;
table_f[State.S_HYPHEN.ordinal()][Typechar.TC_IDSTART.ordinal()] = State.S_ID;
table_f[State.S_HYPHEN.ordinal()][Typechar.TC_OTHER.ordinal()] = State.SFINAL_ID;
}
