private void changeDfaState(char c) {
dfa.changeState(c);
handler.moveForward();
}
private void handleErrorState() {
dfa.reset();
handler.printLexicalException();
Compiler.errorOccured();
popToken();
}
private void prepareToFindNextToken() {
dfa.reset();
handler.moveBackward();
removeSpaces();
}
private void handleNonAcceptState() {
if (dfa.isInErrorState()) handleErrorState();
else if (dfa.isInSpaceState()) dfa.reset();
}
private void processNextChar(char c) {
changeDfaState(c);
if (dfa.isNotInAcceptState()) handleNonAcceptState();
}
private TokenTuple findToken() {
while (dfa.isNotInAcceptState()) processNextChar(handler.getCurrentChar());
return dfa.getToken();
}
private void removeSpaces() {
while (handler.hasChars() && handler.isAtSpaceChar() && dfa.isInSpaceState())
processNextChar(handler.getCurrentChar());
}
public void reset() {
dfa.reset();
}
