public TrialUndoParser(TokenStream tokStream, ParseTable prs, ITrialUndoActionProvider ra)
throws BadParseSymFileException, NotBacktrackParseTableException {
this.tokStream = tokStream;
this.prs = prs;
this.actionProvider = ra;
START_STATE = prs.getStartState();
NUM_RULES = prs.getNumRules();
LA_STATE_OFFSET = prs.getLaStateOffset();
EOFT_SYMBOL = prs.getEoftSymbol();
ERROR_SYMBOL = prs.getErrorSymbol();
ACCEPT_ACTION = prs.getAcceptAction();
ERROR_ACTION = prs.getErrorAction();
if (!prs.isValidForParser()) throw new BadParseSymFileException();
if (!prs.getBacktrack()) throw new NotBacktrackParseTableException();
}
