AcceptStates.java

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * This file is part of SableCC.                             *
 * See the file "LICENSE" for copyright information and the  *
 * terms and conditions for copying, distribution and        *
 * modification of SableCC.                                  *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

package org.sablecc.sablecc;

import org.sablecc.sablecc.analysis.*;
import org.sablecc.sablecc.node.*;

public class AcceptStates extends DepthFirstAdapter {
    public DFA dfa;
    public String stateName;
    private ResolveIds ids;

    public AcceptStates(DFA dfa, ResolveIds ids, String stateName) {
        this.dfa = dfa;
        this.ids = ids;
        this.stateName = stateName;
    }

    @Override
    public void caseStart(Start node) {
        for (int i = 0; i < dfa.states.size(); i++) {
            DFA.State state = (DFA.State) dfa.states.elementAt(i);
            state.accept = -1;

            int accept = -1;

            for (int k = 0; k < state.nfaStates.size(); k++) {
                if (state.nfaStates.get(k)) {
                    if (dfa.nfa.states[k].accept != null) {
                        if (accept == -1) {
                            accept = ids.tokenList.indexOf(dfa.nfa.states[k].accept);
                        } else {
                            accept = Math.min(
                                    ids.tokenList.indexOf(dfa.nfa.states[k].accept),
                                    accept);
                        }
                    }
                }
            }

            state.accept = accept;
        }
    }
}