ProfilingATNSimulator.java 文件源码

@Override
protected DFAState getExistingTargetState(DFAState previousD, int t) {
    // this method is called after each time the input position advances
    // during SLL prediction
    _sllStopIndex = _input.index();

    DFAState existingTargetState = super.getExistingTargetState(previousD, t);
    if ( existingTargetState!=null ) {
        decisions[currentDecision].SLL_DFATransitions++; // count only if we transition over a DFA state
        if ( existingTargetState==ERROR ) {
            decisions[currentDecision].errors.add(
                    new ErrorInfo(currentDecision, previousD.configs, _input, _startIndex, _sllStopIndex, false)
            );
        }
    }

    currentState = existingTargetState;
    return existingTargetState;
}