Example usage for org.antlr.v4.runtime.tree ParseTreeListener visitErrorNode

Introduction

In this page you can find the example usage for org.antlr.v4.runtime.tree ParseTreeListener visitErrorNode.

Prototype

void visitErrorNode(ErrorNode node);

Source Link

Usage

From source file:parser.walkers.SnapTreeWalker.java

License:Open Source License

public void walk(ParseTreeListener listener, ParseTree t) {
    if (t instanceof ErrorNode) {
        listener.visitErrorNode((ErrorNode) t);
        return;/*w  ww  . ja  va 2 s .c  o m*/
    } else if (t instanceof TerminalNode) {
        listener.visitTerminal((TerminalNode) t);
        return;
    }
    GlobalInfo info = GlobalInfo.getInstance();
    info.setNotVisitNodes(new ArrayList<Integer>());
    RuleNode r = (RuleNode) t;
    enterRule(listener, r);
    int n = r.getChildCount();
    for (int i = 0; i < n; i++) {
        Boolean found = false;
        for (int j = 0; j < info.getNotVisitNodes().size(); ++j) {
            if (info.getNotVisitNodes().get(j).equals(i)) {
                found = true;
                break;
            }
        }
        if (!found) {
            List<Integer> aux = info.getNotVisitNodes();
            info.setNotVisitNodes(new ArrayList<Integer>());
            walk(listener, r.getChild(i));
            info.setNotVisitNodes(aux);
        }
    }
    exitRule(listener, r);
    info.setNotVisitNodes(new ArrayList<Integer>());
}

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